Digital geotechnical maps of Brussels (vector, raster)
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Brussels-Capital Region: The geotechnical maps of Brussels were elaborated by J.P. Dam, under the direction of prof. J. Nuyens, V. Roisin and R. Thonnard of the Université Libre de Bruxelles (ULB) and of the Vrije Universiteit Brussel (VUB), members of the Centre Interuniversitaire pour la Cartographie Géotechnique directed by J. Nuyens (ULB). They were then published at a scale of 1/5000 between 1976 and 1990 by the ‘Institut Géotechnique de l’Etat’ (State Geotechnical Institute). The constituent documents (maps and associated reports) provide an overview of the following points: - tests carried out in the region ; - depth of the water table ; - nature and position of the tertiary substratum ; - nature and strength of the various surface layers; - units with a specific overlay of the formations encountered. Their initial objective was to respond to the needs of the builders for synthetic and easily accessible documentation relating to the subsoil of the Brussels region. The plates and documents provided did not claim absolute precision because of the interpolations and extrapolations necessary for their establishment. The present archive is presented in three forms: - Digitized maps and associated FR/NL explanatory notes .pdf ; - Georeferenced 'raster' maps (lambert 72); - Vector' maps (lambert 72). List of available maps: 31.2.4; 31.2.6; 31.2.8; 31.3.1; 31.3.2; 31.3.3; 31.3.4; 31.3.5; 31.3.6; 31.3.7; 31.3.8; 31.4.7; 31.7.1; 31.7.2; 31.7.3.
布鲁塞尔首都大区：布鲁塞尔土工地图由J.P. Dam编制，在布鲁塞尔自由大学（Université Libre de Bruxelles, ULB）与荷语布鲁塞尔自由大学（Vrije Universiteit Brussel, VUB）的J. Nuyens、V. Roisin及R. Thonnard教授的指导下完成，上述人员均为J. Nuyens（ULB）领导的大学间土工制图中心（Centre Interuniversitaire pour la Cartographie Géotechnique）成员。该地图随后于1976年至1990年间由"国家土工研究所（Institut Géotechnique de l’Etat）"以1:5000的比例尺发布。 其组成文件（含地图及配套报告）涵盖以下内容： - 该区域内开展的土工试验 - 地下水位埋深 - 第三纪基底的性质与赋存位置 - 各类表层土层的性质与强度 - 所遇地层的特定覆盖单元 该数据集的初始目标是满足建筑从业者对布鲁塞尔地区地下土层综合且易于获取的参考资料的需求。由于编制过程中需进行插值与外推运算，所提供的图件与文档不保证绝对精度。 本数据集存档包含三种形式： - 数字化地图及配套法语/荷兰语说明文档（.pdf格式） - 地理参考栅格地图（兰伯特72坐标系） - 矢量地图（兰伯特72坐标系） 可用地图编号列表： 31.2.4; 31.2.6; 31.2.8; 31.3.1; 31.3.2; 31.3.3; 31.3.4; 31.3.5; 31.3.6; 31.3.7; 31.3.8; 31.4.7; 31.7.1; 31.7.2; 31.7.3.
