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| The study on stability of bottom structure during natural caving mining |
| Received:June 02, 2018 Revised:January 31, 2019 |
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| DOI： |
| KeyWord:microseismic monitoring;stress;displacement;bottom structure |
| Author | Institution |
| Peng Zhang |
Yunnan Diqing Nonferrous Metal Co,LTD,Shangri-La Yunnan |
| Wang Ping |
BGRIMM Technology Group |
| Feng Xinglong |
Yunnan Diqing Nonferrous Metal Co,LTD,Shangri-La Yunnan |
| Cai Yongshun |
BGRIMM Technology Group |
| Liu Huawu |
Yunnan Diqing Nonferrous Metal Co,LTD,Shangri-La Yunnan |
| Yuan Bensheng |
BGRIMM Technology Group |
| Zhao Bingfeng |
Yunnan Diqing Nonferrous Metal Co,LTD,Shangri-La Yunnan |
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| Abstract: |
| Based on the statistics of stress, displacement means and the macroscopic phenomena of rock fracture fracture in the bottom of the mining process, the stability of the bottom structure in the mining process of prong copper mine is studied comprehensively.Under this geological condition, the influence of the propulsion process on the bottom structure stress is about 20m around the propulsion line. At the same time, based on the stress and microseismic monitoring data, it is concluded that the stability of the bottom structure is greatly affected by the fault, and the large stress concentration is easily induced near the 30m near the fault line of the bottom structure, and the rock mass in this range needs two reinforcement support. |
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