Simple download service (Atom) of the dataset: Mapping of the alump removal of clays on the commune of Beaupuy (Gers)

The mapping of the hay removal of clays in the commune of Beaupuy 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（Gers）博皮伊公社（Beaupuy）内黏土胀缩危害整治相关图件，提取自法国地质与矿业研究局（BRGM）编制的省域地质图件。该图件为黏土收缩-膨胀现象发生概率的分区图。法国地质与矿业研究局（BRGM）最初以该省地质图为基础，依托纯物理准则编制了易发性图件，编制过程中针对每个地质地层，综合考量了以下因素：
— 地层内黏土组分占比（岩相分析）；
— 黏土相中膨胀性矿物占比（矿物组成分析）；
— 岩土体的工程地质特性。
针对已识别的各黏土地层，最终的危害等级由前述得到的易发性等级结合归一化至每100平方千米实际出露城市化地表的灾害性胀缩密度共同确定。