Dynamic monitoring research on displacement of rock mass in coal seam floor on the 1604 workface in NanTun coalmine, Shandong Province, China
In order to understand the displacement regular of rock mass in coal seam floor, displacement monitoring sensors were arranged in underground boreholes and realized the dynamic monitoring displacement of rock mass. First, the geological and the hydrogeological condition of the 1604 workface and NanTun coalmine were analyzed. Second, boreholes was constructed in roadway on the 1604 workface, displacement monitoring sensors were arranged in boreholes in different depth, when the distance of mining position and borehole was 110 m, the displacement monitoring sensor started monitoring, which the different depth displacement data were collected. Last, through comparing displacement data in different depth, the paper point out as the development of mining the influence degree of the displacement of rock mass in coal seam floor can be divided into initial influence stage, obvious influence stage and significant influence stage. Workface mining caused the depth of the rock mass displacement variation from 11.95 to 13.94 m below coal seam. The result will guide the coalmine prevention and control of water inrush from coal seam floor.
Rock mass in coal seam floor Displacement Dynamic monitoring NanTun coalmine
H.Y. Yin J.C. Wei J.B. Guo Z.J. Li Z.W. Zhu Y.Z. Guan R.X. Liu D.X.Hu
Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Qingdao an Yanzhou Coal Mine Co.Ltd, Zoucheng and 273500, 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
924-930
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）