破碎带工程围岩超前锚杆加固外插角研究  

Study on setting angle of bolt forepoling in surrounding fractured rock

作　　者：周桥[1] 高谦[1] 许海涛[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]华北科技学院安全工程学院,北京101601

出　　处：《煤炭学报》2009年第12期1594-1598,共5页Journal of China Coal Society

基　　金：国家安全生产科技发展计划项目(05-376);国家科技支撑计划基金资助项目(2008BAB32B01);国家高技术研究发展计划(863)基金资助项目(2008AA062101)

摘　　要：为了研究超前锚杆加固与破碎带工程围岩的相互作用机理及其参数选择,以福建武平紫金矿业有限公司230斜坡道在破碎带中超前锚杆加固为工程背景,在考虑隧洞工程的不可预见性和围岩压力模糊性的基础上,建立了相应的破碎带斜坡道(隧洞)大比例相似材料模型.通过对隧洞超前锚杆不同加固方式的开挖模拟试验研究和对超前锚杆加固各参数之间关系的理论推导,分析得出了超前锚杆加固外插角参数的选择原则与范围.In order to study its mechanism and bolts parameters in fractured surrounding rock,the ramp 230 of Wupin Zijin Mining Company was taken as example and four similar material models,which were large scale for considering the tunnel or ramp＇s unpredictability and the surrounding rock pressure＇s ambiguity,were built. Based on different bolt forepoling of tunnel excavation analogy by similar material,as well as bolt forepoling param-eters theory analytic derivation,the selection principle and range of setting angle was researched.

关 键 词：破碎带 超前锚杆 外插角 相似材料模型 

分 类 号：TD353.6[矿业工程—矿井建设]