摘要
在煤矿开采中,工作面推进引起的围岩应力场变化是导致巷道破坏、围岩变形的重要因素之一,分析动压巷道应力场演化对安全生产有着重要意义。根据工程实例,对受采动影响的巷道使用FLAC3D软件进行了数值模拟,并从应力场、位移场演化以及塑性区分布特征进行了分析,通过实地监测的数据对数值模拟分析进行了验证,由此针对安全生产给出了上山保护煤柱尺寸应在100 m的建议。
In coal mining, the change of surrounding rock stress field caused by working face advance is one of the important factors leading to roadway failure and surrounding rock deformation, and making an analysis on dynamic pressure roadway stress field evolution is of great significance for safe production. According to the engineering example, the numerical simulation of a roadway affected by mining is carried out by FLAC 3D software, and the characteristics of stress field, displacement field evolution and distribution of plastic zone are analyzed. The numerical simulation analysis is verified by the on-site monitoring data. Therefore, it is suggested that the size of the uphill protective coal pillar should be 100 m for safe production.
作者
李业旭
LI Yexu(School of Mining Engineering,Anhui University of Science&Technology,Huainan 232001,China)
出处
《现代信息科技》
2023年第4期157-162,共6页
Modern Information Technology
关键词
工作面
围岩变形
应力场
数值模拟
working face
surrounding rock deformation
stress field
numerical simulation
