青菜冲矿白云岩巷道断面位移收敛观测与分析

Displacement observation and convergence analysis of dolostone section in Qincaichong Mine

开磷集团青菜冲矿多年来采用分段空场法开采,进入深部开采后地压越来越大,为此对青菜冲深部矿体采用充填法开采,同时对巷道两帮位移量和巷道顶板位移进行的监测,发现位移量均小于5mm,随着时间的推移,位移增长速率随时间的增加而逐渐降低,说明青菜冲矿深部采用充填法开采能有效控制岩层变形和采区地压,确保矿床的安全高效开采。

Qincaichong Mine of KaiLin Group has used sublevel open stope method in the mining operation for years.With increasing ground pressure in the deep mining,filling method in introduced in the operation instead.Observation being made of the final amount of side wall convergence and tunnel roof displacement showed that both displacements were less than 5 mm.Over the time,the growth rate would increase gradually.Therefore,the filling method introduced in Qincaichong Mine is able to effectively control rock stratum deformation and ground pressure in the mining area,ensuring safe and efficient mining operation of the deposits.