煤矿采空区上部引水隧洞沉降观测与分析

Observation and Analysis of Subsidence of Diversion Tunnel on Upper Mine Goaf

某黄河引水隧洞位于煤矿采空区上部,煤矿开采造成地表沉陷以及引水隧洞下沉坍塌,不能正常供水。为了确保隧洞正常引水,在隧洞修复后建立了移动观测站,观测隧洞移动变形情况,根据实测数据进行计算分析,结果表明,采矿引起的地表移动和残余变形已经结束,隧洞已经进入稳定状态。

The diversion tunnel of the Yellow River is on the upper part of the mine goaf, which causes the subsidence of the surface and the collapse of the diversion tunnel which can not be supplied to normal water supply. In order to ensure the normal water diversion of the tunnel, a mobile observatory was set up after the tunnel was repaired. Based on the measured data and caculation, the results show that the surface movement and residual deformation caused by mining were over, and the tunnel will be stable.