Height and detection of water flowing fractured zone in fully mechanized mining area
Coal mining like mining underneath buildings, roads, or waters changes the distribution of stress in rock mass, resulting in deformations between the roof and the surface, as well as crisscrossing fractures in the mining rock mass. These fractures and deformations affect the mechanic behaviors of the rock mass, and to some extent control its stability. As mining continues, stress balance will be lost, which may lead to collapsing of the rock mass around stope. Therefore, the monitoring of water flowing fracture zone of overlying strata is a vital problem. This paper studies the relationship between the water flowing fracture zone and mining by taking the fully mechanized mining underneath waters as an example. It concludes that the variations and distribution of fractures in the mining rock mass can be revealed by P- and S-wave seismic survey, which ensures miming of coal seam safely. S-wave reflection survey can be used to detect the formations with water flowing fractures and characterize the development degree of the fractures. The validity of the proposed method was verified by drilling. The proposed method provides support for mining of coal seam of over 10m at onetime under water reservoir.
SV wave Exploration mined-out areas coal seam water flowing fracture zone geophysical methods
Baishan Xu Qi Li Zhihong Li Zhijian Hao Guojun Gao
School of Resource and Civil Engineering, Northeastern University, Shenyang, Liaoning 110004, China School of Resource and Civil Engineering, Northeastern University,Shenyang,Liaoning 110004, China Institute of Geophysical Prospecting, Nanjing 130026, China School of Resource and Civil Engineering, Northeastern University,Shenyang, Liaoning 110004, China Tiefa Coal Industry(Group)Limited Liability Company Shenyang 110500, Chin Abstract
国际会议
成都
英文
141-145
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）