摘要
为了解决深部矿井巷道支护的难题,建立了弹塑性变形软岩巷道力学模型,理论分析了支护机理和巷道表面位移、速率随时间变化曲线,研究了支护结构极限承载能力,然后对巷道支护进行了参数设计。研究得出:巷道围岩的表面位移和时间呈正比关系;选择一定的时间节点,对巷道进行再次支护,可以实现对巷道蠕变的有效控制;全断面注浆+锚索梁支护可以有效增加巷道支护阻力和巷道围岩松动圈的自身承载能力,保证了巷道的稳定性。
In order to solve the problem of deep mine roadway support,this paper established a mechanical model of elastoplastic deformation soft rock roadway,theoretically analyzed the support mechanism and road surface displacement,velocity versus time curve,studied the ultimate bearing capacity of the supporting structure,and then the roadway support was designed with parameters.The study shows that the surface displacement and time of the surrounding rock are positively proportional,selecting a certain time node and re-supporting the roadway can effectively control the creep of the roadway;full-section grouting+anchor beam support,it can effectively increase the roadway support resistance and the self-bearing capacity of the surrounding rock loose ring of the roadway to ensure the stability of the roadway.
作者
胡雅哲
刘艳明
Hu Yazhe;Liu Yanming(Songshan Coal Mine,Henan Yonghua Energy Co.,Ltd.,Yanshi471900,China)
出处
《能源与环保》
2019年第7期317-320,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
巷道支护
控制蠕变机理
支护结构极限承载能力
参数设计
弹塑性变形
表面位移
全断面注浆+锚索梁支护
roadway supporting
control creep mechanism
ultimate bearing capacity of supporting structure
parameter design
elastoplastic deformation
surface displacement
full-section grouting+anchor beam support
