巨厚岩浆岩下开采覆岩移动规律及采场压力变异性分析

Variability Analysis of Overlying Strata Movement rule and Mining Field Pressure Under Super-thick Magmatic Rock

应用UDEC2D计算软件,对济宁二号煤矿巨厚岩浆岩下煤层开采的覆岩移动规律及采场压力变异性进行了数值模拟,揭示了在开采过程中采场覆岩移动规律、工作面支承压力和支架阻力的变异性,系统分析了岩浆岩层作为关键控制层对覆岩移动和采场压力的影响。

The variability of the overlying strata movement rule and mining field pressure which is under the super - thick magmatic rock in 2nd pit of Jining, are simulated with the numerical programme UDEC2D. The resuits show the variability of the overlying strata movement rule and the supporting pressure and resistance on the working face during mining, which can be used to analyze the influence of the magmatic rock as the control stratum when the overlying strata layer is moving and mining field pressure is changing.