北京六环路内城市地质调查研究构想

北京市六环路内的地质工作，以服务于城市建设和环境保护为中心。工作区分为京西隆起，马池口凹陷、小汤山凸起，顺义凹陷．来广营凸起、丰台凹陷和大兴隆起等7个地质单元，分为第四系、新近系，古近系，沉积岩盖层．片麻岩基底、C面和M面等7大层序。按地质单元设计标准钻孔，利用3S技术处理地质资料，用三维可视化展示地质调查成果，开创了地质调查为城市建设服务的新局面。

Research on Urban Geological Survey Inside the 6th Ring Road of Beijing

To carry out urban geological survey inside the 6th ring road is a creation in the 21st century. The work should be focused on urban construction and the study of the relation between human engineering activity and natural soils and rocks. On the plane, it is divided into 7 geologic units： the Jingxi uplift, the Machikou depression, the Xiaotangshan rise, the Shunyi depression, the Laiguangying rise, the Fengtai depression and the Daxing uplift. Vertically, it is divided from the surface to the center into 7 sequences： Quaternary System, Paleogene System, Neogene System, the sedimentary cover, the gneiss basement, the Conrad and the Moho. By setting up standard holes on the basis of geological units and making full use of the 3-S technology to process geological data, the results of geological survey are displayed with three-dimensional visualization. With the vertical sequences as the main line, and the planar geological units as the accessory lines, a work flow is established, forming a professional network, thereby creating a new situation of urban geological work.