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Fuzzy Comprehensive Evaluation JINDUICHENG pit slope safety evaluation

Author: WuKai
Tutor: YeHaiWang
School: Wuhan University of Technology
Course: Safety Technology and Engineering
Keywords: Slope Stability Fuzzy Comprehensive Evaluation Membership function AHP
CLC: X936
Type: Master's thesis
Year: 2011
Downloads: 172
Quote: 1
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Abstract


Open pit mine slope is stable, not only to the success of production, personnel, and equipment and would have a profound impact on the security situation. Once the slope instability, ranging from the impact of mining carried out smoothly, and the weight is causing substantial damage to property, or even in the long term impact on the local ecological environment. The traditional method such as slope stability analysis and numerical limit equilibrium analysis, value analysis is often used, ignoring the widespread problem of slope fuzzy uncertainty factor, can not overcome impossible to describe the process of slope stability analysis ambiguity of this malaise. In the study discusses the existing open pit slope fuzzy randomness after JINDUICHENG open pit slope for the actual situation, the establishment of a dedicated fuzzy comprehensive evaluation model, which introduces the membership functions and multi-level weighting allocation method. Evaluation results show that the mine slope is currently in stable condition generally, need to take measures to maintain and manage, verify this conclusion fuzzy comprehensive evaluation model is reasonable. On this basis, the preparation of the slope of the fuzzy comprehensive safety evaluation procedures, so that the whole evaluation process becomes easier and faster. The main contents and conclusions are the following: (a) for open pit slope fuzzy uncertainty analysis, including the slope fuzzy uncertainty internal factors and external factors fuzzy uncertainty. Defined the fuzzy comprehensive evaluation theory in solving problems among these uncertain advantage. (2) established for open pit slope JINDUICHENG fuzzy comprehensive evaluation model, and detailed analysis of the current situation of the slope and the comprehensive evaluation results present the open pit slope stability in normal condition. Evaluation results basically consistent with the mine slope situation indicates that this evaluation model for mine slope for the safety assessment. (3) the introduction of factors in the evaluation process as well as two indicators of the membership function weight determination methods. 14 evaluation indicators selected and divided into four subsets were analyzed and calculated the level of the final fuzzy membership matrix and weight of total order. The results are consistent with the slope situation, verify the factor index membership function and the weight distribution is reasonable. (4) In the open pit slope JINDUICHENG fuzzy comprehensive evaluation model based on the preparation of a highly-targeted fuzzy comprehensive evaluation procedures. With the program, engineers can quickly and easily at any time on the open pit slope stability evaluation. In addition, the evaluation procedure makes it on the slope maintenance and management measures as well as the effect of pre-preliminary forecast ex-post evaluation becomes more intuitive and efficient.

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CLC: > Environmental science, safety science > Safety Science > Safety Engineering > Mine Safety
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