深部矿井锚教材拉支架设计理论及应用.pdf

第24 卷 第16 期 岩石力学与工程学报 Vol.24 No.16 2005 年8 月 Chinese Journal of Rock Mechanics and Engineering Aug .，2005 深部矿井锚拉支架设计理论及应用 1 1 1 2 1 刘 波 ，杨仁树 ，何满潮 ，岳中琦 ，张定春 (1. 中国矿业大学(北京校区) 力学与建筑工程学院，北京 100083 ；2. 香港大学 土木工程系，香港) 摘要：论述基于锚拉支架综合抗力的理论设计方法，研究锚杆轴向拉伸与横向阻抗的非线性综合抗力，得出拉杆 预紧力的下限和上限值、锚杆锚固力下限值的计算方法及设计理论公式。编制了煤矿锚拉支架的优化设计程序， 且在我国最大深井之一的孙村煤矿－1 100 m 水平(埋深1 310 m)巷道支护工程进行了应用，实测结果表明：设计安 全经济、理论有效可靠。 关键词：岩石力学；锚拉支架系统；理论设计方法；锚杆综合抗力；深部煤矿；应用 中图分类号：TD 353+ .6 文献标识码：A 文章编号：1000 –6915(2005)16 –2875 –07 DESIGN PRINCIPLE FOR TRUSS-BOLT SYSTEM AND ITS APPLICATION TO DEEP COAL MINE ROOF REINFORCEMENT 1 1 1 2 1 LIU Bo ，YANG Ren-shu ，HE Man-chao ，YUE Zhong-qi ，ZHANG Ding-chun (1. School of Mechanics and Civil Engineering ，China University of Mining and Technology，Beijing 100083，China； 2. Department of Civil Engineering ，University of Hong Kong，Hong Kong ，China) Abstract ：From the view of the safety and economical problems ，the controlling of stability for fractured surrounding rock roof is one of the principal problems for deep underground coal mining engineering. A theoretical design method of the truss-bolt system for reinforcing underground fractured rock roof in coalmines is presented. The mechanical analysis of the system is considered in the models for the tie-rods and inclined roof bolts as well as three upper and lower bounds. The arching actions exerted by lateral behavior of the inclined bolts in reinforcing cracked roof are a