期刊
SHOCK AND VIBRATION
卷 2016, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2016/6195482
关键词
-
资金
- Chinese National Key Basic Research Development Plan (973) [2014CB047100]
- Science Fund for Creative Research Groups of the National Natural Science Foundation of China [51421064]
- Chinese National Natural Science Foundation [41572249]
Severe damage occurs frequently in mine pillars subjected to shear stresses. The empirical design charts or formulas for mine pillars are not applicable to orebodies under shear. In this paper, the failure process of pillars under shear stresses was investigated by numerical simulations using the rock failure process analysis (RFPA) 2D software. The numerical simulation results indicate that the strength of mine pillars and the corresponding failure mode vary with different width-to-height ratios and dip angles. With increasing dip angle, stress concentration first occurs at the intersection between the pillar and the roof, leading to formation of microcracks. Damage gradually develops from the surface to the core of the pillar. The damage process is tracked with acoustic emission monitoring. The study in this paper can provide an effective means for understanding the failure mechanism, planning, and design of mine pillars.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据