摘要
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 value which the pillar could carry has much effect on protecting the under reservoir from breaking. Taking the Lijiahao mine as the example, using the numerical simulation and the theoretical analysis had a research on the relationship between the stability of the reservoir and the critical hydraulic pressure of the coal pillar. The influence of the two factors on the stability of coal pillar is contradictory. Finally, the limit value of the bearing capacity of the safety coal pillar of the underground reservoir is deduced by using the function between the limit head the safety pillar can carry and the plastic zone width.
出处
《煤炭技术》
北大核心
2017年第8期184-186,共3页
Coal Technology
基金
国家重点研发计划资助项目(2016YFC0501100)
关键词
安全煤柱坝体
极限水头值
低速非线性
coal pillar dam
maximum head value
low velocity and nonlinear
