煤巷合理锚杆锚索布置方式的分析及应用  

Analysis of Rational Anchored Bolt and Cable Layout Manner and Application

作　　者：程蓬[1] 杨刚 王俊虎 白杰 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]内蒙古鲁新能源有限责任公司,内蒙古锡林浩特026321 [3]西山煤电集团公司杜儿坪矿,山西太原030022

出　　处：《煤矿开采》2013年第6期49-52,36,共5页Coal Mining Technology

基　　金：国家国际科技合作项目(2010DFB73070);国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261211);天地科技开采事业部科技创新基金项目(KCSJ-QNCX-2012-06)

摘　　要：基于目前煤矿巷道支护中锚杆-锚索布置方式存在的误区,分析了锚杆、锚索各自的力学特征和作用机理,采用数值模拟手段对比分析不同锚杆-锚索布置方式下预应力分布特征,并进行了现场实测。研究结果表明:将锚杆锚索分开布置在不同断面上,锚杆和锚索受力稳定均衡,相互协调,此时巷道浅部和深部围岩预应力分布状态更加合理,可发挥锚杆锚索协同作用,形成最佳预应力承载结构,有利于巷道保持稳定性。There is misunderstanding of anchored bolt and cable layout manner in roadway supporting. Mechanical characteristic and action mechanism of anchored bolt-cable was analyzed. Applying numerical simulation to analyzing pre-stress distribution characteristic of different anchored bolt-cable layout manners and on-the-spot observation was made. Results showed that stress of anchored bolt and anchored cable installed at different sections was stable and even,pre-stress distribution state of shallow and deep surrounding rock was more rational. This could exert cooperation action of anchored bolt and anchored cable,form best pre-stress bearing structure,which was favorable for keeping roadway stability.

关 键 词：煤巷 布置方式 联合支护 预应力场 承载结构 

分 类 号：TD353[矿业工程—矿井建设]