四方金矿深埋软岩巷道支护研究
发布时间：2018-09-14 11:06
【摘要】：矿山在进入深部开采后,由于地压问题引起巷道破坏,支护必不可少,但选择何种支护方式是困扰矿山企业的一个技术难题,亟待研究解决。以陕西四方金矿为例,通过对以往各种理论的总结分析,选取组合拱理论进行计算,应用有限元软件分析支护效果,探讨了不同支护方式下洞周应力、变形和塑性区的分布情况,并应用应力强度系数进行量化分析,研究了不支护、锚杆支护、锚杆与喷混凝土联合支护的效果。结果表明:采用有效的锚喷联合支护,可以改善围岩的应力状态,有效控制巷道的变形,不仅增加工人的安全感,而且提高工作效率,为矿山的安全生产、资源开采回收利用提供有力的保证。
[Abstract]:After the mine enters deep mining, the roadway is destroyed because of the ground pressure problem, so it is necessary to support the mine. However, the choice of the supporting method is a technical problem puzzling the mine enterprises, which needs to be studied and solved urgently. Taking Sifang Gold Mine in Shaanxi Province as an example, through summing up and analyzing all kinds of previous theories, the combined arch theory is selected to calculate, and the support effect is analyzed by using finite element software, and the stress around the hole under different supporting modes is discussed. The distribution of deformation and plastic zone and the quantitative analysis of stress intensity coefficient are used to study the effect of unsupported bolting and shotcrete combined support. The results show that the stress state of surrounding rock can be improved and the deformation of roadway can be effectively controlled by using effective bolting and shotcreting combined support, which not only increases the sense of security of workers, but also improves the working efficiency, which is beneficial to the safe production of mines. Resources recovery and utilization to provide a strong guarantee.
【作者单位】： 西安建筑科技大学材料与矿资学院;西安建筑科技大学土木工程学院;陕西凤县四方金矿有限公司;
【分类号】：TD353
本文编号：2242527
[Abstract]:After the mine enters deep mining, the roadway is destroyed because of the ground pressure problem, so it is necessary to support the mine. However, the choice of the supporting method is a technical problem puzzling the mine enterprises, which needs to be studied and solved urgently. Taking Sifang Gold Mine in Shaanxi Province as an example, through summing up and analyzing all kinds of previous theories, the combined arch theory is selected to calculate, and the support effect is analyzed by using finite element software, and the stress around the hole under different supporting modes is discussed. The distribution of deformation and plastic zone and the quantitative analysis of stress intensity coefficient are used to study the effect of unsupported bolting and shotcrete combined support. The results show that the stress state of surrounding rock can be improved and the deformation of roadway can be effectively controlled by using effective bolting and shotcreting combined support, which not only increases the sense of security of workers, but also improves the working efficiency, which is beneficial to the safe production of mines. Resources recovery and utilization to provide a strong guarantee.
【作者单位】： 西安建筑科技大学材料与矿资学院;西安建筑科技大学土木工程学院;陕西凤县四方金矿有限公司;
【分类号】：TD353
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