软岩隧道开挖不良部位支护实用技术  

Supporting and Protecting Technologies in Bad Location of Soft Crag Tunnel Excavation

作　　者：高向阳[1] 程翔[2] 

机构地区：[1]徐州工程学院,江苏徐州221008 [2]国网北京经济技术研究院徐州勘测设计中心,江苏徐州221000

出　　处：《徐州工程学院学报（自然科学版）》2009年第2期29-34,共6页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：徐州工程学院科研资助项目(XKY200604)

摘　　要：针对软岩和极软岩的开挖支护难题,根据软岩工程特征、变形机理和工程实测的正反监控,分析了软岩开挖不良部位特征,提出了不良部位耦合支护控制技术.实践中采用非等强度耦合控制技术对不良部位实施二次支护,成功控制了围岩的变形,保证了工程开挖的稳定.该技术具有控制简单、安全可靠、速度快、支护费用低等优点.同时,还指出该研究主要对象为一般软岩,对多层、断裂破碎等复杂岩体情况的适用性尚待探讨.On the basis of the analyses of the characteristics of soft rock project, deformation mechanism, and positive and negative monitoring in practical engineering, this paper analyzed the characteristics of bad locations in soft crag excavation and put forward coupling support control technologies in bad locations. In practical project, unequal intensity of coupling control technology is applied to the second supporting of bad locations, with the result of a successful control of the deformation of surrounding rock and the stability in excavation. This technology is characterized by its simplicity, reliability, high--speed and low cost. As pointed out in the paper, this technology is mainly applied to soft rock, and its feasibility in multilayer and broken rock mass is still to be ascertained.

关 键 词：软岩 不良部位 耦合控制 非等强度支护 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]