长沙市地下空间工程地质影响评价

摘要

根据长沙市城市总体规划和地下空间开发现状, 结合一系列工程地质调查成果, 评价分析了地下空间开发过程中工程地质条件的影响.选取长沙市中心城区地下浅层空间为研究对象, 从岩土体性质、地形地貌、地质构造、水文地质和不良地质作用等五个方面进行分析, 先运用AHP层次分析方法, 建立递阶层次结构, 确定各指标权重并判断一致性.再运用模糊综合评价, 对主城区块地下空间综合适应性进行评价, 划分影响评价区块.%The article writes according to the overall plan and present situation of underground space development of Changsha.It combines with a series of investigation results of engineering geology and analyzes the influence of the engineering geological conditions in the process of the underground space development. Selecting the shallow underground space in the central urban area as the research object and analyzing from several aspects, such as geotechnical property, topography, geological structure, hydrogeology, harmful geological action and so on, it uses AHP hierarchy method to establish the hierarchy structure and ensure the weights and the consistency of all the indicators. Then it uses the fuzzy comprehensive evaluation to evaluate the comprehensive adaptability of underground space in downtown area and divide the impact assessment blocks.