Experimental Analyses of Strata Movement Deformation Catastrophe Caused by Deep Coal Mining
详细信息
- 责任者：Liu Shuxian (College of Civil and Transportation Engineering ; Liaoning Technical University ; Fuxin 123000 ; China) ; Wei Xiaogang
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(4)
- 页码：p.88-92,105
- 图表：illus., 1 table, 7 refs.
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Aiming at the safety problems of strata movement deformation caused by deep coal mining,the methods of theoretical analysis and similar material simulation experiment are used to monitor the displacement and stress conditions of overburden rock in the process of mining deep coal,to observe the fracture failure,bending and move deformation of stope overlayered strata in the process of deep mining coal in simulated mining,and to make a comparison and analysis of rock mass deformation,evolution of stress field and influence of mining stress area.The experimental results show that the area of stress increases,the area of stress reduces and the area of original rock stress is formed along the coal face in the process of deep mining coal.When making the exploitation of coal island face,the old and new mined-out areas become a whole one caused by strata movement and fall collapse,leading to mine power disasters caused easily by the fall collapse of mining strata.When decorating the position of roadway of the island,layout in the reducing stress area of the mined-out area should be considered first,and the width of coal pillar is not more than 10 m to 12 m,and the best choice is form 6 to 8 m.