Study on movement law of overlying strata during shallow thinner seam mining

摘要：

Given the first time for shallow thinner seam mining, this paper resorted to methods of field measurement and numerical simulation to research overlying strata movement law during shallow thinner seam mining. Through research, it was obtained that 20m in front of coal wall was the region influenced by mining. In this region, advanced abutment pressure demonstrated law of single elastic. The pressure reached its peak value at coal wall and the fracture of rock beam occurred only in coal wall. When rock beam ruptured, there was no obviously deformation and other pressure behavior in roadway. As distance to coal wall increasing, pressure value was decreasing in rule of negative exponential.

关键词： shallow thinner seam field measurement numerical simulation single elastic

作者: Li Qinghai

作者单位: Faculty of Resources & Safety Engineering, China University of Mining & Technology(Beijing), Beijing 100083, China

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 255-259

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）