岩土力学2011，Vol.32Issue(9)：2785-2790,6.
覆盖型岩溶塌陷的空间预测与评价
Spatial prediction and evaluation of collapse of covered karst
摘要
Abstract
A typical geological model considering soil cover thickness, geological material types for the most harmful covered karst is established. The karst collapse mechanism is analyzed under groundwater fluctuating and rainfall infiltration based on this model. Furthermore, a comprehensive method for karst collapse spatial prediction that involves physical detection, engineering investigation, geological material physical mechanics experiment, numerical simulation and monitor evaluation is proposed and applied to evaluating a karst disaster area in Huangshi, Hubei province. The numerical simulation, which is based on physical detection, engineering investigation and laboratory test of rock and soil, shows that the ground settlement due to softened clay cover caused by rain permeation is larger than that induced by groundwater fluctuating. With reference to the developing tendency of building fissures and ground cracks, the spatial extent of the karst collapse area is distinguished. It is shown that this karst collapse spatial forecast method is feasible; and the prediction results are in good agreement with observations. Therefore, this method can be popularized as a general method for karst collapse prediction in similar engineering.关键词
覆盖型岩溶/塌陷机制/塌陷预测/综合方法Key words
covered karst/ collapse mechanism/ prediction of collapse/ comprehensive method分类
建筑与水利引用本文复制引用
刘秀敏,陈从新,沈强,陈建胜..覆盖型岩溶塌陷的空间预测与评价[J].岩土力学,2011,32(9):2785-2790,6.基金项目
国家自然科学基金项目 (No.10872207,No.50809069) （No.10872207,No.50809069）
中国科学院知识创新工程重要方向项目(No.KJCX2-YW-L01). （No.KJCX2-YW-L01）
