Research Relating To Law Of Surface Movement And Overlying Strata

With officially-approved production of 28.5 billion tonnes of coal, Huainan Coal Mine has significant abundance of coal resource reserves. Taken her particular complexity on coal seams, high gas and ground stress into consideration, she is a typical coal mining example in China. Guqiao Mine, the main branch of Huainan Coal Mining group, has been invested as much as 2.9 billion RMB and planned to supply 5 million tones of products annually (major production system reach annual capacity of 10 million).In the process of exploiting coal underground,when the gob area reaches or exceeds a certain size,it would cause the deformation and destruction of overlying rock or even the surface. With the tireless efforts of scientists,though the strata movement law in condition of general mining is grasped basically,the research for condition of thick loose bed is still not enough.According to the geography condition of 1117(1) working face of GUQIAO coal mining and multi-stage surface movement observation data,the paper discusses the law of surface movement, analyzes the relationship between surface movement and the the overlaying strata movement, and even the relationship between mine pressure and the mine pressure with the measured data.In the process of underground mining,mine pressure, overburden rock movement, until the distortion caused by surface subsidence, they exist necessary link between them,which are a common process of changing and movement.This article analyse and process lots of datas which come from 1117 movement observation station, and basecally controlled surface movemental characters in this work face. By RFPA2D software simulate the process of the rock movement and damaging in the 1117 (1) work face, and combined with ground movement analyze and study the relevant links between the overburden rock and the surface subsidence.The result of this paper aimed at the mining thick watered idiosyncratic will have certain practical guidance values and some reference function in similar to the conditions coal production.Figure [38] Table [13] Reference [65]...