煤矿深部Y型大断面交岔点双控锚杆支护技术及工程应用  

APPLICATION AND DOUBLE-DIRECTION CONTROL BOLT SUPPORT TECHNOLOGY OF LARGE SPAN Y-TYPE INTERSECTION IN DEEP COAL MINE

作　　者：郭志飚[1,2] 王炯[1,2] 蔡峰[1,2] 王福强[1,2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京100083 [2]中国矿业大学力学与建筑工程学院,北京100083

出　　处：《岩石力学与工程学报》2010年第A01期2792-2798,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重大项目(50490270);国家重点基础研究发展规划(973)项目(2006CB202200);教育部创新团队项目(IRT0656)

摘　　要：在复杂工程地质条件下,煤矿深部Y型大断面交岔点严重变形,牛鼻子部位破坏尤为严重。通过现场调查及理论研究,总结深部Y型大断面交岔点的典型破坏形式。研究表明深部高应力、牛鼻子部位两侧无约束分别支护是其破坏的主要原因,提出深部Y型大断面交岔点双控锚杆支护技术。将研究成果应用于夹河矿深部交岔点工程中,应用效果良好。Under geological conditions at deep coal mine, the crossing roadway especially Y-type experienced large deformation. The junction pillar cguld be the weakest link. Based on in-situ investigation and theoretical study, typical forms of the destruction were summarized. High stress and unrestrained deformation at two sides of junction pillar were two main factors affecting the stability of the cross-section. Deep Y-type large cross-section junction double-control anchor support technology was proposed. The technology has been used in deep intersection engineering in Jiahe coal mine.

关 键 词：采矿工程 深部 交岔点 双控锚杆 支护技术 

分 类 号：TD353[矿业工程—矿井建设]