S2106回风顺槽掘进和回采期间矿压监测

The Mine Pressure Monitoring of S2106 Air-return Roadway in Tunneling and Stopping Period

在为S2106回风顺槽提供支护设计与现场应用的基础上,对该顺槽的矿压进行了监测,检测结果显示:锚杆安装后,顶、帮锚杆载荷在前15天呈对数形式分别增长到110 k N和90 k N左右后趋于稳定;受本工作面采动影响,瓦排巷两帮最大移近量约为1.2 m,最大收敛速度约为190 mm/d,顶底板最大移近量约为1.5 m,最大收敛速度约为350 mm/d;由于超前支承压力的作用,巷道变形速度在10 m^15 m范围内达到最大,两帮和顶底板最大变形速度为91 mm/d和80 mm/d。

Based on providing the support design and field application for S2106 air-return roadway, this paper carries out the mine pressure monitoring of this roadway, and results of which show that after the anchor bolt was installed, in previous 15 days the top and side anchor bolt loads increased up to about 110 kN and 90 kN respectively in logarithmic form and then became stable;and affected by the mining of this working face, the biggest displacement between the two sides of gas drainage roadway was about 1.2 m with the convergence rate of about 190 mm/d, and the biggest displacement between the roof and floor was about 1.5 m with the convergence rate of about 350 mm/d;and as a result of the action of advanced abutment pressure, the deformation velocity of roadway reached the maximum in the range of 10 m to 15 m, while the maximum deformation velocity of the two sides and the roof/floor was 91 mm/d and 80 mm/d respectively.