摘要
该文通过研究软岩巷道底鼓的力学机理并对底鼓机理进行了分类,获取了软岩巷道底鼓的主要影响因素;提出了控制底鼓的支护措施;在此基础上通过数值模拟优化了支护参数,提出了一种新型控制底鼓的支护技术—锚网喷+锚索+底角锚杆支护技术。工程实践表明:在复杂的软岩支护中,该技术取得了令人满意的效果,能有效控制巷道底鼓。
Floor heave has become one of the central characters and forms of the deformation and failure of surrounding rock of soft rock roadway.After researching on and classifying the mechanics mechanism of floor heave of soft rock roadway,the chief influence factors of floor heave of soft rock roadway are obtained.Thus support measures are put forward,based on which support parameters are optimized by numerical simulation.So,a new kind of controlling floor heave support technique,that is bolt,mesh and spurt ＋ anchor ＋ bottom corner bolt,is adopted.Engineering practice showed that this technology can effectively control floor heave and gain famous effect.
出处
《山东煤炭科技》
2011年第1期117-117,119,共2页
Shandong Coal Science and Technology
关键词
软岩巷道
底鼓
数值模拟
支护对策
soft rock roadway floor heave numerical simulation support countermeasure
