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安全煤柱坝体所能承载的极限水头值大小对煤矿地下水库系统安全运行有很大影响。以李家壕煤矿为例,综合运用数值模拟,理论分析研究了水库稳定性与煤柱坝体所能承载的临界水压的关系。二者对于煤柱稳定性的影响相反,最后利用煤柱所能承载的极限水头值与塑性区宽度之间的函数关系对安全煤柱的极限水头值进行了预测。
The limit head size that safety bollards can bear has great influence on the safe operation of coal mine underground reservoir system. Taking Lijiagou coal mine as an example, the relationship between reservoir stability and the critical hydraulic pressure that a coal pillar can carry is studied synthetically by using numerical simulation and theoretical analysis. The effect of the two on the stability of coal pillars is opposite. Finally, the ultimate head value of safety pillars is predicted by the function relationship between the ultimate head and the width of plastic zone.