极近距离煤层工作面同采合理错距研究

摘要

通过分析灵石煤矿极近距离9#煤层和10#煤层的090105工作面与100105工作面围岩特性，建立工作面同采数值模拟模型，模拟工作面错距为10 m、15 m、25 m、30 m 及40 m 时冒落带、裂隙带高度以及超前支承压力的影响。结果表明，工作面同采错距为25～30 m 时采场扰动影响最小。%By analyzing the characteristics of the 090105 and 100105 working face's wall rock in the very contiguous seams 9# and 10# of Lingshi colliery,the essay builds the numerical simulation model of working face-synchronous acquisition to simulate the effect of the height of caving zone and fractured zone,and advanced abutment pressure when the stepped spinning of working face is 10 m,15 m,25 m,30 m and 40 m.The results show that the mining exploitation has the minimum value when the stepped spinning of the working face-synchronous acquisition is between 25 m to 30 m.