Research on Characteristics of Mining Effect in Coal Seam Floor above Confined Water

摘要：

The hazard of confined water is one of the biggest threats when mining the lower coal seam on the deep level, and the premise to judge and to solve the threat of water inrush is to find out the potential impact on the floor by mining. On the practical basis of mining 7＃ coal seam in 7600 district of Feicheng Coal Mine Group, the abutment pressure distribution law in the working face floor and the damage depth impacted by mining are theoretically analyzed. The stress and strain and damage state of floor rock impacted by mining are comprehensively researched using finite difference FLAC3D simulation software, and combined with the field measurement results, the mining effect in floor is further comparatively studied; therefore, important reference to accomplish safely mining of the lower coal seam above confined water is provided.

关键词： confined water coal seam floor mining effect numerical simulation

作者: REN Yanghui ZHANG Wenquan ZHANG Hongri HU Yanhui SUN Ming

作者单位: College of Resources and Environment Engneering,Shandong University of Science and Technology,Qingda College of Resources and Environment Engneering,Shandong University of Science and Technology,Qingda College of Geoinformation and Science Engneering,Shandong University of Science and Technology,Qingd

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1665-1669

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）