无底柱分段崩落法回采巷道收敛的影响因素分析

Analysis of Influence Factors on the Convergence of Stoping Drift in Sublevel Caving Method without Bottom Structure

利用KM 1型收敛计对程潮铁矿的采准巷道进行了收敛监测。通过对监测结果的分析 ,确定了影响巷道收敛的因素 。

Model KM 1 convergence meter was used to measure convergence of development drifts in Chengchao Iron Mine.On the basis of these measurements,the authors identified some factors affecting the convergence of drift.Some special situations occured in the measurements were also discussed in the paper.