Risk evaluation of mine-water inrush based on principal component logistic regression analysis and an improved analytic hierarchy process | Évaluation des risques de venue d’eau minière basée sur une analyse de régression logistique en composantes principales et un processus de hiérarchie analytique amélioré Evaluación del riesgo de la afluencia de agua en una mina basada en el análisis de regresión logística de los componentes principales y en un proceso jerárquico analítico mejorado 基于主成分逻辑回归分析和改进层次分析法的矿井突水风险评估 Avaliação de risco de irrupção de água de mina com base na análise de regressão logística de componente principal e um processo de hierarquia analítica aprimorado
2021
Li, Qiang | Sui, Wanghua
A method of evaluating the risk of floor water inrush using principal component logistic regression analysis (PCLRA) and an improved analytic hierarchy process (IAHP) is presented. The approach was validated by a case study at the Yangcheng coal mine in Shandong Province, China. First, the risk assessment index of floor water inrush was determined based on geological and hydrogeological conditions of the study area. Then, a comprehensive evaluation model (CEM), combining PCLRA with IAHP, was constructed to determine the comprehensive weight of each water-inrush evaluation index. Finally, water-inrush risk zoning was determined with GIS. The results show that the CEM, compared with the water-inrush coefficient method (WICM) traditionally and commonly used in China, has higher fitting accuracy and more detailed division of water-inrush risk areas. This method not only follows the observations in reality, but also fully considers the relative importance of water-inrush evaluation indices. The results can provide a theoretical basis for the safe mining of coal seams above confined groundwater.
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