Stability evaluation study of underground mine goaf based on efficacy coefficient method and improved AHP
Received:March 02, 2018  Revised:March 19, 2018
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KeyWord:underground mine safety; goaf stability; efficacy coefficient method; improved AHP; safety evaluation model
  
AuthorInstitution
董宪久 广西中金岭南矿业有限责任公司
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Abstract:
      It is of great significance to develop a new model of goaf stability evaluation for improving the reliability of goaf stability evaluation and ensuring the safety of underground mine. The evaluation indices for goaf stability was built through selecting four factors as the main influencing factor which includes engineering geological environment, rock mass quality, geometric parameters and surrounding rock stress of goaf. Based on the principle efficacy coefficient method, using the three-scale improved analytic hierarchy process (AHP)to calculate the weight coefficient of evaluation indices, a new model of goaf stability evaluation was established. Then the model was employed to evaluate the goaf stability in Panlong lead-zinc underground mine. The evaluation results were in good agreement with the actual situation, which verified the feasibility and reliability of the newly established evaluating model based on efficacy coefficient method. Thus the study provides a new approach for goaf stability evaluation.
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