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| OVERALL AHP-Fuzzy EVALUATION OF SURROUNDING ROCK FOR UNDERGROUND GROUP CAVITIES UNDER OPENCAST-UNDERGROUND COMBINED MINING |
| Received:April 19, 2010 |
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| DOI：10.3969/j.issn.1005-7854.2011.03.001 |
| KeyWord:opencast-underground combined mining; underground group cavities; AHP-Fuzzy method; overall evaluation |
| Author | Institution |
| REN Hong-gang |
Engineering Company，Beijing General Research Institute of Mining & Metallurgy ，Beijing，China |
| TAN Zhuo-ying |
School of Civil and Environmental Engineering, University of Science and Technology Beijing，Beijing ，China |
| CHEN Shou-xue |
School of Civil and Environmental Engineering, University of Science and Technology Beijing，Beijing ，China |
| HUANG Zhen-jin |
Yongping Copper Mine of Jiangxi Copper Company Limited, Shangrao ，China |
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| Abstract: |
| The paper mainly studies the surrounding rock condition of underground group cavities under the influence of many factors such as excavation, underground mining, open blasting, ground stress, engineering geology and etc, during opencast-undergound combined mining at Yongping Copper Mine. Since there are much fuzzy and uncertain information in practical engineering, the synthetic evaluation system is established by analytic hierarchy process and the fuzzy mathematics method is used to assess the weight of quantitative and qualitative indexes. At last, the major influencing factors to the stability of underground group cavities and the rock grade under the influence of various factors are obtained by fuzzy matrices. |
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