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THE APPLICATIONS AND ANALYSIS OF THE ACOUSTIC EMISSION MONITORINGFOR THE STOPING PROCESS OF THE 92# PILLAR GROUP IN THE TONGKENG MINE |
Received:August 15, 2011 |
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DOI:10.3969/j.issn.1005-7854.2011.04.005 |
KeyWord:AE; stoping; microseisms; pillar group |
Author | Institution |
YUAN Ben-sheng |
Beijing General Research Institute of Mining & Metallurgy, Beijing ,China |
ZHANG Yin-ping |
Beijing General Research Institute of Mining & Metallurgy, Beijing ,China |
HUANG Dao-qin |
Tongkeng Mine of Guangxi Huaxi Group Co., Ltd. Liuzhou Guangxi ,China |
LAN Hu |
Tongkeng Mine of Guangxi Huaxi Group Co., Ltd. Liuzhou Guangxi ,China |
SI Xiao-peng |
Beijing General Research Institute of Mining & Metallurgy, Beijing ,China |
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Abstract: |
The direct roof of the 92# orebody in Tongkeng mine is the consolidated or non-consolidated goaf filling when mining the 91# orebody. Furthermore, over 450,000 m3 goaf are still unfilled forming a vast risk zone over the slowly inclined large and thick orebody, which leads to complex mining conditions and frequent geostatic activity. According to the actual situation of Tongken mine, a multi-channel AE monitoring system is established (this article only covers eight channels) in order to monitor the ground pressure in the 92# orebody mining. Based on the monitoring data, this paper analyzes parameters such as the number of AE events and wave, and strikes statistically the correlation between the stress field of mining the 92# orebody in Tongkeng mine and the acoustic emission activity frequency. |
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