Numerical Simulation of Karst Collapse in Limestone Mining Areas Based on FLAC3D
The mining area is a limestone building materials mine with open-pit depression mining.With the mining and groundwater pumping,a large number of karst collapses are generated around the mine,seri-ously affecting the safety production of the mine and the production and life of the surrounding residents.Using FLAC3D technology,natural electric field frequency selection method exploration,and geological com-prehensive analysis to grasp the mechanism and distribution law of karst collapse,the research results show that fault structures are developed on the east,north,and south sides of the mine pit;Mining production drainage of groundwater and mining blasting causing vacuum suction and water seepage leading to karst col-lapse around the mine pit;Based on FLAC3D technology,numerical simulation analysis of karst collapse in mining areas is conducted,and the numerical simulation results are basically consistent with geological analy-sis,geophysical exploration conclusions,and the current situation of collapse.The research results provide scientific basis for the prevention and control of karst collapse in the later stage.
FLAC3D technologykarst collapsenatural electric field frequency selection explorationlimestone building materials mine
万方数据
维普
