南沱河堤下采煤地表沉陷预测的数值模拟研究

Numerical Simulation Prediction Study of Surface Subsidence Caused by Coal Mining Under the Bank of Nantuo River

运用FLAC3D软件,对百善煤矿6123首采工作面开采所引起的南沱河河堤的移动与变形(以南堤为例)进行了模拟,与实测对比分析,得出了地表移动的基本规律和特征。模拟结果对堤下采煤具有一定的指导意义,为开采沉陷的堤坝治理提供了科学依据。

Movement and deformation of Nantuo River bank （taking the south bank as example） caused by the first mining longwall 6123 in Baishan Mine was simulated by FLAC^3D. Comparing the simulation results with in-situ survey, the basic characteristics and behavior of the earth＇s surface movement were educed. The results have some guidance in mining under the river bank and provide scientific basis for the river bank subsidence treatment.