{"id":3294,"date":"2026-01-15T08:20:50","date_gmt":"2026-01-15T08:20:50","guid":{"rendered":"https:\/\/vizl.eu\/?page_id=3294"},"modified":"2026-02-03T21:49:41","modified_gmt":"2026-02-03T21:49:41","slug":"697-algemene-ledenvergadering-rijckholt","status":"publish","type":"page","link":"https:\/\/vizl.eu\/index.php\/697-algemene-ledenvergadering-rijckholt\/","title":{"rendered":"697 Lezing &#8216;De ondergrondse erfenis van de mijnen&#8217; en ALV Rijckholt"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"3294\" class=\"elementor elementor-3294\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b371e5d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b371e5d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e8ef01b\" data-id=\"e8ef01b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9ce953b elementor-widget elementor-widget-text-editor\" data-id=\"9ce953b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"color: #800000;\">Datum: Vrijdag 30 januari 2026<\/span><\/strong><br \/><strong><span style=\"color: #800000;\">Locatie: Eetcaf\u00e9 Riekelt, <\/span><\/strong><strong><span style=\"color: #800000;\">Rijksweg 184, 6247AN Rijckholt<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-882f3f3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"882f3f3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-45bbb45\" data-id=\"45bbb45\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b83980a elementor-widget elementor-widget-text-editor\" data-id=\"b83980a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">Ook dit jaar werd de jaarlijkse Algemene Ledenvergadering (ALV) weer met een <\/span><span style=\"color: #000000;\">activiteit gecombineerd. Deze keer betrof het een zeer interessante lezing door drs. ing. Joep Orbons, Senior Archeoloog \/ Senior Specialist <\/span><span style=\"color: #000000;\">Geofysica van ArcheoPro uit Eijsden. Joep Orbons heeft oorspronkelijk een studie technische natuurkunde gedaan aan de Hogeschool Heerlen waar hij voor zijn afstudeerwerk als ingenieur de destijds in de archeologie toegepaste weerstandsmeter verbeterde zodat hiermee archeologische structuren in de ondergrond beter kunnen worden opgespoord.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-fcbbf39\" data-id=\"fcbbf39\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d9aa31b elementor-widget elementor-widget-image\" data-id=\"d9aa31b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"570\" height=\"573\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Joep-Orbons.jpg\" class=\"attachment-large size-large wp-image-3331\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Joep-Orbons.jpg 570w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Joep-Orbons-298x300.jpg 298w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Joep-Orbons-150x150.jpg 150w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c30dd86 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c30dd86\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-baefa6d\" data-id=\"baefa6d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fae7416 elementor-widget elementor-widget-image\" data-id=\"fae7416\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"735\" height=\"346\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-1024x482.jpg\" class=\"attachment-large size-large wp-image-3372\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-1024x482.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-300x141.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-768x362.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-1536x724.jpg 1536w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/IMG_20260130_190326a-2048x965.jpg 2048w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1de508c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1de508c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-071f11b\" data-id=\"071f11b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-28c832a elementor-widget elementor-widget-image\" data-id=\"28c832a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"735\" height=\"489\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-01.jpg\" class=\"attachment-large size-large wp-image-3329\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-01.jpg 1004w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-01-300x200.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-01-768x511.jpg 768w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e4f6df elementor-widget elementor-widget-image\" data-id=\"7e4f6df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"411\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-06-1024x573.jpg\" class=\"attachment-large size-large wp-image-3335\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-06-1024x573.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-06-300x168.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-06-768x429.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-06.jpg 1193w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-b7ac38b\" data-id=\"b7ac38b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a96abf8 elementor-widget elementor-widget-text-editor\" data-id=\"a96abf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"randje\"><span style=\"color: #000000;\">Daarna heeft hij aan de Universiteit van Amsterdam middeleeuwse archeologie gestudeerd en is daar afgestudeerd op de archeologische aspecten van de Zuid Limburgse kalksteengroeves.\u00a0<\/span><span style=\"color: #000000;\">Binnen\u00a0<b>ArcheoPro<\/b> is Joep senior archeoloog en senior specialist geofysisch onderzoek en GIS dataverwerking. Hij is projectleider archeologische vooronderzoeken, proefsleuven en geofysische onderzoeken. Verder levert hij samen met Leon GIS-ondersteuning aan de andere projectleiders.\u00a0<\/span><span style=\"color: #000000;\">Naast zijn archeologische werkzaamheden is Joep bezig met onderzoeken in en bij de onderaardse ontginningen in de mergel van Zuid Limburg zoals de mergelgrotten, de vuursteenmijn en andere ondergrondse tunnels. Hij doet daar cultuurhistorisch onderzoek, metingen en klimaatonderzoek.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-82f9db6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"82f9db6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-0f22e75\" data-id=\"0f22e75\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b7a1c2d elementor-widget elementor-widget-image\" data-id=\"b7a1c2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"408\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-02-1024x569.jpg\" class=\"attachment-large size-large wp-image-3332\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-02-1024x569.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-02-300x167.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-02-768x427.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-02.jpg 1169w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1bef08 elementor-widget elementor-widget-image\" data-id=\"e1bef08\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"392\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-04-1024x546.jpg\" class=\"attachment-large size-large wp-image-3337\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-04-1024x546.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-04-300x160.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-04-768x409.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-04.jpg 1145w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-946d0af\" data-id=\"946d0af\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f7c673f elementor-widget elementor-widget-image\" data-id=\"f7c673f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"376\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-03-1024x524.jpg\" class=\"attachment-large size-large wp-image-3333\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-03-1024x524.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-03-300x153.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-03-768x393.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-03.jpg 1185w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b2dc8d elementor-widget elementor-widget-image\" data-id=\"4b2dc8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"406\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-05-1024x566.jpg\" class=\"attachment-large size-large wp-image-3336\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-05-1024x566.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-05-300x166.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-05-768x424.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Lezing-Joep-Orbons-05.jpg 1155w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9b7539e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9b7539e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e853f8d\" data-id=\"e853f8d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-43c2aec elementor-widget elementor-widget-text-editor\" data-id=\"43c2aec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">In de lezing werd er uitgebreid stilgestaan bij de verschillende soorten kaarten van de ondergrond van Zuid-Limburg en de directe omgeving. Reeds 6000 jaar is deze regio een mijnbouwgebied. Rond 1100 vond de kolenafbouw systematisch plaats in dagbouw. Omstreeks 1400 werden kolen voor het eerst ondergronds gedolven. De ondergrondse gangen en de plaatsen waar kolen gedolven werden zijn in de loop van de tijd vastgelegd in meer dan 8000 kaarten. Hierbij moet opgemerkt worden dat er uiteenlopende systemen gehanteerd werden door de verschillende mijnbedrijven.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-767dd46 elementor-widget elementor-widget-image\" data-id=\"767dd46\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"414\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Soorten-kaarten-1024x577.jpg\" class=\"attachment-large size-large wp-image-3353\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Soorten-kaarten-1024x577.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Soorten-kaarten-300x169.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Soorten-kaarten-768x432.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Soorten-kaarten.jpg 1151w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-990ac17 elementor-widget elementor-widget-text-editor\" data-id=\"990ac17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">Er heeft data-analyse plaatsgevonden van verschillende soorten kaarten:<\/span><\/p><ul><li><span style=\"color: #000000;\">131 drempelkaarten:\u00a0 oppervlaktekaarten waar onder andere schade aan bebouwing weergegeven wordt<\/span><\/li><li><span style=\"color: #000000;\">kaarten betreffende de bodemdaling- resp. de bodemstijging<\/span><\/li><li><span style=\"color: #000000;\">top Carboonkaarten waar de bovenkant van kolenlagen aangegeven zijn<\/span><\/li><li><span style=\"color: #000000;\">kaarten van de opwaartse boringen<\/span><\/li><li><span style=\"color: #000000;\">600 zogenaamde hoofdgrondplannen, waarin de infrastructuur van de mijnen aangegeven zijn, de transportgangen<\/span><\/li><li><span style=\"color: #000000;\">1450 laagplannen; zeer gedetailleerde kaarten waar je kunt zien waar de kolen ontgonnen zijn<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bde54cc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bde54cc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7eba569\" data-id=\"7eba569\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5223b52 elementor-widget elementor-widget-image\" data-id=\"5223b52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"431\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Hoofdgrondplannen-1024x600.jpg\" class=\"attachment-large size-large wp-image-3354\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Hoofdgrondplannen-1024x600.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Hoofdgrondplannen-300x176.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Hoofdgrondplannen-768x450.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Hoofdgrondplannen.jpg 1118w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-36e0576 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"36e0576\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-07c9191\" data-id=\"07c9191\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-db78491 elementor-widget elementor-widget-text-editor\" data-id=\"db78491\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">Problemen bij de analyse van de kaarten:<\/span><\/p><ul><li><span style=\"color: #000000;\">verschillende kaartcodes: iedere mijn gebruikte zijn eigen laagcodes voor de kolenlagen<\/span><\/li><li><span style=\"color: #000000;\">verschillen in de ori\u00ebntatie en qua co\u00f6rdinatenstelsels<\/span><\/li><li><span style=\"color: #000000;\">kaarten overlappen deels andere kaarten<\/span><\/li><li><span style=\"color: #000000;\">verschillende schaalgroottes<\/span><\/li><li><span style=\"color: #000000;\">chaotische detailkaarten<\/span><\/li><li><span style=\"color: #000000;\">fouten in kaarten uit verschillende periodes<\/span><\/li><li><span style=\"color: #000000;\">ontginningen over de concessiegrens<\/span><\/li><li><span style=\"color: #000000;\">de rand van de kaart valt buiten het papier<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48c4e77 elementor-widget elementor-widget-image\" data-id=\"48c4e77\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"439\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/18000-km-1024x611.jpg\" class=\"attachment-large size-large wp-image-3362\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/18000-km-1024x611.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/18000-km-300x179.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/18000-km-768x458.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/18000-km.jpg 1111w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-073e6eb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"073e6eb\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2573585\" data-id=\"2573585\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-25820f5 elementor-widget elementor-widget-text-editor\" data-id=\"25820f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">Het kaartmateriaal vormt een schat aan informatie. In geschiedkundig opzicht zie je bijvoorbeeld hoe de kolenafbouw zich in de tijd ontwikkeld heeft. Ook kun je op bepaalde kaarten in detail zien wanneer kolenlagen afgebouwd zijn en of ontgonnen gebied opgevuld is. Daarnaast kan er onderzocht worden of er een mogelijk verband is tussen de ondergrond en bepaalde plaatsen waar zich verzakkingen en\/of sinkholes voordoen.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f662b57 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f662b57\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2b3f6f7\" data-id=\"2b3f6f7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0fa27c3 elementor-widget elementor-widget-text-editor\" data-id=\"0fa27c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6><span style=\"color: #000000;\"><strong>Zeer indrukwekkend waren de 3D-animaties die dankzij de digitalisering van de verschillende kaarten mogelijk zijn. Het moge duidelijk zijn dat hier bergen werk door Joep is verzet. Middels deze animaties krijg je als het ware een inkijk hoe de verschillende lagen zich ten opzichte van elkaar in de ondergrond bevinden.<\/strong><\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-60bceee elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"60bceee\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-08beef1\" data-id=\"08beef1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b7854e6 elementor-widget elementor-widget-video\" data-id=\"b7854e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/Domaniale-Mijn-Kerkrade.mp4\" controls=\"\" preload=\"metadata\" controlsList=\"nodownload\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-477a9e1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"477a9e1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d803406\" data-id=\"d803406\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-71ce04f elementor-widget elementor-widget-text-editor\" data-id=\"71ce04f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000;\">In de mijnstreek is (bijna) alles dat met steenkoolmijnbouw te maken heeft verdwenen. In de Kempen (Vlaanderen) en Duitsland worden de oude koolmijnen gebruikt als incubators voor bedrijven, voor toerisme, voor educatie.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b4b3fd2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b4b3fd2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28755e1\" data-id=\"28755e1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e6441bb elementor-widget elementor-widget-image\" data-id=\"e6441bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"413\" src=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/mijnbouwkaarten-1024x576.jpg\" class=\"attachment-large size-large wp-image-3371\" alt=\"\" srcset=\"https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/mijnbouwkaarten-1024x576.jpg 1024w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/mijnbouwkaarten-300x169.jpg 300w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/mijnbouwkaarten-768x432.jpg 768w, https:\/\/vizl.eu\/wp-content\/uploads\/2026\/02\/mijnbouwkaarten.jpg 1190w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a6e1993 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a6e1993\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4aa440e\" data-id=\"4aa440e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c570935 elementor-widget elementor-widget-text-editor\" data-id=\"c570935\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6><span style=\"color: #000000;\">Gesteld kan worden dat de data-analyse van de kaarten zeker zal bijdragen tot een beter begrip van en inzicht in de enorme omvang en complexiteit van de ondergrondse mijnbouwindustrie in deze regio. <\/span><\/h6><h6><span style=\"color: #000000;\">Jongere generaties zullen in de toekomst op basis van dit werk een virtuele, ondergrondse wandeling kunnen maken door de kilometerslange gangenstelsels waar hun voorouders eertijds het zwarte goud dolven.<\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Datum: Vrijdag 30 januari 2026Locatie: Eetcaf\u00e9 Riekelt, Rijksweg 184, 6247AN Rijckholt Ook dit jaar werd de jaarlijkse Algemene Ledenvergadering (ALV) weer met een activiteit gecombineerd. Deze keer betrof het een &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3294","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/pages\/3294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/comments?post=3294"}],"version-history":[{"count":57,"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/pages\/3294\/revisions"}],"predecessor-version":[{"id":3408,"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/pages\/3294\/revisions\/3408"}],"wp:attachment":[{"href":"https:\/\/vizl.eu\/index.php\/wp-json\/wp\/v2\/media?parent=3294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}