The characteristic of in-situ stress in outburst area of China
In order to obtain the characteristics of in-situ stress field in outburst mining area, using the hollow inclusion (HI) technique to measure the insitu stress of coal and gas outburst mining area. The measurement sites located in northeast, middle and east of china, which include 8 mining areas such as Fuxin, Pingdingshan, Hebi and Huainan, etc. Base on the analysis of measurement data from outburst mining area, conclusions could be obtained as follow: (a) major principal stress and minor principal stress is horizontal stress and interim principal stress is vertical stress, and the type of outburst areas stress field is dynamic stress field; (b) the major principal stress and minor principal stress are higher than other regions and the tectonic stress is outstanding; (c) the ratio of major principal and vertical stress is decrease with the increase of depth and the type of stress field is likely transfer dynamic to static. Thus, in-situ stress plays a key role during the occurring and development of coal and gas outburst, which is an important reason of severe outburst in China.
coal and gas outburst in-situ stress measurement stress field type
J. Han H. W. Zhang S. Li W. H. Song
College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, China College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
963-974
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）