摘要
以俄霍布拉克煤矿18m残留煤柱内巷道布置为研究背景,综合运用现场实测、理论分析和数值模拟等方法,研究了采空区残留煤柱的应力环境和变形状态,分析了不同宽度窄煤柱条件下煤柱垂直应力分布、变形机理及塑性分布状态,综合确定了采空区残留煤柱内巷道布置的窄煤柱宽度为4. 0m。在此基础上,提出了残留煤柱内巷道围岩控制原则和技术,并进行了工业性试验,试验巷道实际维护效果良好。
Taking roadway layout in 18 m residual coal pillar of Ohoblak coal mine as background,the methods of field measurement,theoretical analysis and numerical simulation are carried out,to study the stress environment and deformation state of the residual coal pillar in the goaf a.The vertical stress distribution,deformation mechanism and plastic distribution state of the coal pillar under the condition of narrow coal pillar with different width are analyzed,and the narrow pillar width in the roadway in the residual coal pillar in the goaf is determined as 4.0 m.On this basis,the control principle and technology of roadway surrounding rock in residual coal pillar are put forward,and industrial tests are carried out.The actual maintenance effect of the test roadway is favorable.
作者
于洋
陈勇
赵祥岍
YU Yang;CHEN Yong;ZHAO Xiang-qian(School of Civil Engineering,Xuzhou Institute of Technology,Xuzhou 221018,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭工程》
北大核心
2019年第9期66-69,共4页
Coal Engineering
基金
国家自然科学基金资助项目(51904269)
全国建筑材料行业科技创新计划项目(2016-Z-9,M2018J02)
徐州工程学院校级科研项目(XKY2018132)
关键词
残留煤柱
巷道布置
围岩控制
锚杆支护
residual coal pillar
roadway layout
surrounding rock control
bolt support
