摘要
以某矿回采巷道为例,测试了断层附近地应力大小和方向,与不受断层影响处测试结果进行比较,得出断层对地应力大小和方向影响显著,分析了平行大断层时深部巷道顶板下沉量小、两帮移近量大进而引起严重底鼓的变形特征,得出巷道围岩应力值相对围岩强度大且初期支护强度较低的变形机理,提出"强帮快支"的巷道支护技术,把该技术成功应用于井下,取得显著支护效果,成功解决了该矿深部平行大断层巷道支护难题。
This paper takes a mine roadway as an example,tested crustal stress magnitude and direction near fault,compared test results with not affected by faults,faults significant effect on the situ stress magnitude and direction. Deformation characteristics of deep roadway is small roof subsidence and large deformation in roadway sides,causing severe roadway floor heave when parallel to the major faults. Deep roadway deformation mechanism is rock stress values relatively large compared with rock strength and early support with low intensity. This paper puts forward ＂strong and fast roadway＇s sides＂ support technology and the technology successfully applied to underground,achieved significant supporting effect,successful solved the mine deep roadway which parallel to the major faults supporting problem.
出处
《煤矿开采》
北大核心
2015年第6期56-59,共4页
Coal Mining Technology
基金
北京市科委重大科技成果转化落地培育项目(Z141100003514011)
天地科股份有限公司开采设计事业部技创新基金项目(KJ-2014-TDKC-06)
天地科技股份有限公司创新基金项目(KJ-2014-TDKC-01)
关键词
深部巷道
平行大断层
变形特征
变形机理
支护技术
Deep roadway
Parallel to the major faults
Deformation characteristics
Deformation mechanism
Supporting Technology
