摘要
为了确保小煤柱留巷技术在王台铺煤矿的安全应用,研究了煤柱应力分布,计算了复用巷道小煤柱的合理宽度。结果表明,当宽度为8 m时,煤柱能够有效支撑顶板。利用数值模拟研究复用巷道围岩应力分布,分析煤柱破坏情况,判断煤柱宽度的合理性。根据现场监测数据研究煤柱应力与时间的关系。
In order to ensure the safety application of small coal pillar entry retaining technology in Wangtaipu coal mine, the coal pillar stress distribution is studied,and the reasonable width of small coal pillar of reused roadway is calculated. The results show that when the width is 8 m, the coal pillar can effectively support the roof. The numerical simulation is used to study the stress distribution of the surrounding rock of reused roadway, and the rationality of the coal pillar width is judged. According to the monitoring data, the relationship between stress of coal pillar and time is studied.
出处
《煤炭技术》
北大核心
2017年第10期61-63,共3页
Coal Technology
基金
高等学校博士学科点专项科研基金项目(20120023110023)
中央高校基本科研业务费专项资金资助项目(2014QZ03)
关键词
小煤柱留巷
煤柱宽度
围岩应力
small coal pillar entry retaining
coal pillar width
surrounding rock stress
