Map Viewing Service (WMS) of the dataset: Map of the haea removal swelling of clays on the commune of Juilles (Gers)

The mapping of the hay removal of clays in the commune of Juilles in the Gers department is extracted from the departmental mapping from the BRGM. This mapping is a zoning of the probability of occurrence of the phenomenon of shrink-inflating of clay soils. A susceptibility map was first drawn up on the basis of purely physical criteria by the BRGM from the geological maps of the department, which were interpreted taking into account the following factors for each geological formation: — the proportion of clay material within the formation (lithic analysis); — the proportion of blowing minerals in the clay phase (mineralogical composition); — the geotechnical behavior of the material. For each of the clay formations identified, the hazard level is ultimately the result of the level of susceptibility thus obtained with the density of sinister swelling, reported to 100 km² of actual urbanised outcropping surface.热尔省瑞伊市镇内黏土胀缩灾害分布图源自法国地质矿业研究局（BRGM）的省级测绘成果。该分布图为胀缩性黏土（shrink-inflating clay soils）现象发生概率的分区图。法国地质矿业研究局（BRGM）最初依据纯物理准则，基于该省地质图编制了敏感性分布图（susceptibility map），编制过程中针对各地质单元综合考量了以下因素： — 地层内黏土物质占比（岩相分析）； — 黏土相内风成矿物占比（矿物组成）； — 材料的岩土工程特性。 针对已识别的各黏土地层，最终的灾害等级由前述敏感性等级结合灾害性胀缩密度（以每100 km²实际出露城市化地表为基准）综合确定。