基于熵权-理想点法的煤层冲击倾向性分类

Classification of rock burst tendency of coal seam based on entropy and ideal point method

针对目前采用的煤层冲击倾向性判别方法存在的不足,基于理想点法的基本原理,选取动态破坏时间、弹性能量指数、冲击能量指数和单轴抗压强度作为评判指标,通过信息熵理论确定各指标的权重系数,建立基于熵权-理想点法的煤层冲击倾向性判别分类模型,并将该模型应用在实验室实测煤样的冲击倾向性分类中.研究结果表明:熵权-理想点法的判别结果与综合判定方法结果相同,且符合实际情况,从而验证了该方法用于煤层冲击倾向性分类的合理性和有效性.

Based on the ideal point method and entropy weight method,a model for classifying rock burst tendency of coal seam was developed in this study.Four indexes were selected as evaluation indexes including the dynamic failure time,elastic energy index,impact energy index and uniaxial compressive strength.The weight coefficients of above four evaluation indexes were calculated using the information entropy theory.In the case studies,the burst tendency classification model based on the ideal point method was applied to the classification of ten coal samples from different coalmines.The study shows that comparing with the results from comprehensive evaluation method,the discriminant results from this model are in good agreement with practical situation.It proves that the ideal point method used to classify the rock burst tendency of coal seam is reasonable and effective.