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《Beijing Surveying and Mapping》 2018-10
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Study on Numerical Simulation of Predicting Ground Surface Displacements Due to Coal Extraction by FLAC~(3D)

LI Yifan;LIU Chengzhou;CUI Tengfei;XIANG Tao;College of Geomatics,Shandong University of Science and Technology;  
In view of the engineering example of 16105 working face in spring coal mine,the numerical simulation software FLAC~(3D) is used to predict and simulate the deformation of coal mining subsidence,and the failure process of mining subsidence and horizontal movement under the influence of adjacent goaf is accurately reproduced,and the surface subsidence between the old goaf and the new excavation face is found.The influence is superimposed on each other.Through comparison and analysis with the results obtained from the probability integral method,it is found that FLAC~(3D) can truly simulate the mutual influence of the surface subsidence between the goaf and the 16105 working surface of the adjacent 16103 working faces,and make up for the shortcomings of the probability integral method which can not fully consider the geological influence.It is a simple and easy method of mining subsidence prediction.
【CateGory Index】: TD327
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