摘要
将巷道侧向支承压力曲线简化为直线,根据两巷道间距不同,将巷道煤柱区域应力分布分为:"马鞍形"分布、"单峰"分布。根据巷道围岩结构确定巷道围岩强度,并依据巷道周围煤岩体上方所受应力及煤岩体整体强度比值关系确定巷道群冲击危险程度。采用文章提出的评估方法对煤柱冲击危险性进行判定,为矿山设计巷道群间距安全合理性提供了理论依据,具有较好的应用价值。
The lateral abutment pressure curve is simplified to a straight line. According to the difference of the distance between the two tunnels, the distribution of the stress distribution in the coal pillar is divided into： ＂saddle shape＂ and ＂single peak＂. According to the surrounding rock structure to determine the strength of surrounding rock, and based on the surrounding coal rock mass above the stress and the overall strength of the coal rock mass ratio to determine the extent of the impact of the roadway group. The proposed evaluation method were used to estimate the rockburst hazard of coal pillar, which provides a theoretical basis for the safety rationality of the roadway group spacing in mine design. The evaluation method has good application value.
出处
《广东化工》
CAS
2016年第19期31-34,共4页
Guangdong Chemical Industry
基金
广东省科技计划项目(编号):2014B070705008
