露井联采下岩体变形规律

Rock deformation under combined action of open pit and underground minings

在研究露天开采浅部煤层时,为了研究深部煤层进行井工开采情况下岩体的变形规律,建立了露天与井工开采岩体移动模型,对露井联合开采条件下岩层变形、破坏过程进行理论描述并求解;应用数值模拟的方法研究露井联采条件下露天矿与井工矿相互影响时的岩层活动规律,同时考虑露天矿排土场大面积、高载荷、高强度排弃等特点,研究在井工开采影响下的变形特点等;并选取典型矿区,对露井联采条件下的岩层、矿坑边坡或排土场演化过程和变形发展趋势进行评价并对灾害进行预报;为排土场边坡、矿坑边坡稳定性分析与评价及露井联采条件下的开采寻找合理的方案,为预测和防治灾害发生提供理论依据。

In the course of ore mining,open-pit is used in shallow coal,and at the same time deep coal is mined underground.The damage model is built basing on rock rheology,and describing the process of deformation and damage under situation of combined underground and open-pit mining;the rule of rock is discussed in the influence of combined underground and open-pit mining,and the character of rock deformation in underground mining thinking of large Waste-dump,high force and strength etc.;and choosing a representative mine,the process of rock slope and Waste-dump are evaluated,disaster is forecast;and disadvantage mining project was simulated in physical model,the result is analyzed among of numerical simulation and locate data;It provides scientific basis for finding reasonable mining scheme to slope of Waste-dump and open-pit,and for forecast and prevention of mining disaster.