论盘区矿柱对顶板导水裂缝带发育的影响

INFLUENCE OF ARRANGED PANEL BARRIER ON THE DEVELOPMENT OF WATER-CONDUCTING FISSURE ZONE IN OVERLYING STRATA

数值模拟结果表明，用充填法开采水平、缓倾斜中厚矿体时，当采空区规模超过了一定范围后，留设盘区矿柱明显地减小了顶板围岩中导水裂缝带的最大发育高度，并且使得最大潜在导水裂缝的发育形态也发生了变化，这些结论对矿山的安全生产，具有重要的指导作用．

In this paper, a numerical simulation method is used to investigate the development of water-con-ducting fissure zone in overlying strata resulting from the extraction of horizontal or gently dippingmedium thickness orebody under water with back-filling. The results show that the maximum devel-oping height of actual presented zone decreases, and the developing shape of latent zone varies bymeans of being arranged panel barrier when the extracting 8cale develops to a certain extent. The con-clusions will play important role in guiding the mine safe production.