地下水位变化对岩溶区建筑地基的稳定性分析

Stability Analysis of Building Foundation in Karst Area by Variations Groundwater Level

基于岩溶区实际地质情况,并结合现场监测,以地下水位的变化为主要影响因素,运用有限元软件对岩溶塌陷区附近的建筑物地基进行稳定性分析.通过对监测和有限元模拟数据的分析可得,地下水位的变化会引起岩溶区土洞的变化,从而影响着岩溶区建筑的稳定性,因与塌陷区距离的差异性,建筑地基将出现明显的不均匀沉降,严重威胁着岩溶区的生命财产安全;数值计算和监测结果的变化趋势相近,数值计算对岩溶区地下水位变化时建筑地基的稳定性分析有着一定的参考性.

Based on the essential geology condition in karst region area, combined with field monitoring, regarding the change of groundwater level variation as main influential factor, analyzed the stability of the building foundation near the karst collapse area by using the finite element software. The results show that： the changed of groundwater level can result in the change of karst soil cave,affected the stability of building. Because of difference of distance from subsidence area, the foundation of building will appear asymmetrical sedimentation, which menaces life, fortune and safety. The numerical calculation simulation results are close to actual monitoring data,it is definite for theoretical calculation to provide reference value when karst groundwater level change,analyzed building foundation stably.