大变形巷道锚杆的力学特性  

Mechanical Characteristics of Rock Bolts in Roadways with Large Deformation

作　　者：漆泰岳[1] 陆士良[2] 高波[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]中国矿业大学能源科学与工程学院,江苏徐州221008

出　　处：《中国矿业大学学报》2002年第5期354-357,共4页Journal of China University of Mining & Technology

基　　金：高等学校博士学科点专项基金资助项目 (970 2 90 0 6)

摘　　要：通过现场和实验室试验对大变形巷道锚杆的力学特性进行了测试 ,揭示了锚杆与围岩相互作用全过程 :初撑→增阻→恒阻→降阻直至失效 ,论述了锚杆阻力下降和失效是大变形巷道锚杆支护所具有的基本规律 .为此 ,对 FLAC3.3中锚杆单元模型进行了修正 ,使其具备模拟锚杆损伤软化的功能 。The mechanical characteristics of rock bolts in roadways with large deformation were obtained from in-situ measurements and laboratory experiments. The result shows that a rock bolt goes through a process of the pretension, the load rising, stabilizing and declining and the function-losing. The declining and the function-losing, damage and softening, are the mechanical characteristics of rock bolts in roadways with large deformation. Furthermore, the model of bolt elements in FLAC3.3, a software, was amended. As a result, the function of damage and softening of rock bolts may be simulated in this software. The research result has been successfully applied in practical works.

关 键 词：巷道 锚杆 力学特性 围岩控制 支护效果 变形 

分 类 号：TD353.6[矿业工程—矿井建设]