北京城市地质条件适宜性评价体系研究

Study on suitability evaluation system of urban geological conditions in Beijing

城市地质条件适宜性评价是支撑城市规划建设区控制性详细规划编制和工程建设前期开展的专项地质调查工作。北京地区调查评价内容包括地形地貌、水文地质、工程地质等3项基础地质条件,活动断裂、地面沉降、地裂缝、崩塌、滑坡、泥石流、采空塌陷、岩溶塌陷、砂土液化、地下水污染、土壤污染等11项地质环境要素,地下水资源、深层地热资源、浅层地热能等3项地质资源要素。在现有标准基础上,结合北京地区城市地质工作实践,新建了1∶10 000和1∶2000精度城市地质条件调查方法体系,并设定了工作布置参数;构建了城市地质条件评价指标体系,包括61项评价指标,其中新增指标20项、修订指标31项、引用现有标准指标10项。

Suitability evaluation of urban geological conditions shall be carried out in the early stage of regulatory planning preparation and key project construction.The survey and evaluation of geological conditions in Beijing includes 3 basic geological elements such as topography, hydrogeology, engineering geology, 11 geological environment elements such as active fault,land subsidence, ground fissure, rock fall, landslide, debris flow, mining collapse, karst collapse, sand liquefaction, groundwater pollution, soil pollution. It also includes 3 geological resources elements such as groundwater resources, deep geothermal resources, shallow geothermal energy. On the basis of the standards issued and combined with the urban geological practices in Beijing, the suitability evaluation system of urban geological conditions in Beijing has been established.The urban geological survey method system with the accuracy of 1:10 000 and 1:2000 is constructed, and work plan parameters are set up. The evaluation index system of urban geology is constructed including 61 indexes with 20 newly-added indexes, 31 modified indexes and10 original indexes.