老采空区上建设项目地质灾害危险性评估

Risk evaluation of geological disaster of construction projects based on old mining areas

老采空区地下采煤活动强烈,地质环境条件相对复杂,在附加荷载作用下存在“活化”的可能性。针对这些地质情况,以峰峰集团有限公司煤化工项目35kV变电站工程地质灾害危险性评估为实例,介绍了该类建设项目的地质灾害危险性预测评估的基本思路和分析方法,并以建筑物荷载影响深度、采空区导水裂缝带发育高度是否相互重叠,作为评价老采空区的活化、地基稳定性及其对建筑物影响的主要依据,对项目用地的适宜性作出了定量评价。

Old mining areas have some characteristics as follows： intensive exploitation of mine; relative complexity of geological enviroment; the possibility of activation based on load. Taking the risk evaluation of geological disaster of 35kV transformer substation of chemical industry based on coal of Fengfeng Group as an example, this paper introduces basic consideration evaluation ways of thinking and analysis methods, and the influence depth of load and the height of fractured zone are taken to evaluate the possibility of activation and the stability of groundsill and their＇ s influence on buildings. This paper has evaluated the benefit of land to project by figure.