近距离薄煤层开采断层防水煤柱留设分析

Analysis on Retaining of the Fault Waterproof Coal Pillar of Thin Coal Seam at Short Range

煤矿生产实践中断层防水煤柱的留设往往根据经验确定,由于矿井地质条件及岩石力学条件的差异性,防水煤柱设计不够科学,增加了采场突水的可能性,而数值模拟计算则可以弥补传统方法的不足。在理论分析地质构造、断层特征及充水因素的基础上,采用理论计算及数值模拟相结合的方法,合理留设断层防水煤柱,对类似情况下断层防水煤柱的留设具有一定的参考意义。

The Retaining of the fault waterproof pillar in coal mine production practice is usually determined according to experience. Due to the differences of mine geological condition and rock me- chanics, design of waterproof coal pillar is not enough scientific, the possibility of mine water inrush is increased, while the numeri- cal simulation can make up for the shortcomings of traditional methods. On the basis of theoretical analysis of characteristics of geological structure, fault features and water filling factors, com- bining with theoretical calculation and numerical simulation meth- od, we design the fault waterproof pillar, which has certain refer- ence significance for designing fault waterproof pillar in similar cases.