Risk assessment of floor water inrush in coal mines based on secondary fuzzy comprehensive evaluation
- 作者：Yi Wang ; yicumt@hotmail.com ; Weifeng Yang ; Ming Li ; Xi Liu
- 关键词：Floor water inrush ; Secondary fuzzy comprehensive evaluation ; Analytic hierarchy process (AHP) ; Membership degree ; Weight
- 刊名：International Journal of Rock Mechanics and Mining Sciences
- 出版年：2012
- 期刊代码：33_13651609
- 类别：civ
- 出版时间：June, 2012
- 卷：52
- 期：Complete
- 页码：50-55
- 文件大小：508 K
摘要
A secondary fuzzy comprehensive evaluation system is constructed to evaluate the risk of floor water invasion in coal mines. Four first-grade indices and 13 second-grade indices are determined based on the principles of scientificity, rationality, operability and representative by using fuzzy mathematics theory. Each index is quantitatively graded according to five risk grades using fuzzy statistical method and expert evaluation method, and the membership degree of every index is constructed. The weight of every index is rationally distributed by analytic hierarchy process (AHP). Evaluations of engineering practice are carried through with hydrogeological data of six mining faces in China. The satisfying evaluation results are consistent with engineering practice.