底板岩层冲击倾向性判定方法  

Discriminating Method of Impact Tendency of Floor Strata

作　　者：李宏艳 崔聪[1,2] 齐庆新 李凤明 邓志刚[1,2,3] 赵善坤 孙中学 LI Hongyan;CUI Cong;QI Qingxin;LI Fengming;DENG Zhigang;ZHAO Shankun;SUN Zhongxue(China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization,China Coal Research Institute,Beijing 100013,China;Coal Mine Safety Engineering Technology Research Center,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [3]北京市煤矿安全技术研究中心,北京100013

出　　处：《煤矿安全》2019年第12期184-188,共5页Safety in Coal Mines

基　　金：国家自然科学基金面上资助项目（51174112）;国家自然科学基金青年科学基金资助项目（51304117）

摘　　要：煤与顶板的冲击倾向性鉴定形成了国家标准,而底板冲击倾向性的判定指标与方法仍然是一个亟待解决的问题。分析底板岩层结构、载荷传递路径以及破坏机理后,提出了基于梁结构的弯曲应变能公式的底板冲击倾向性计算方法,并结合底板岩层的常规力学性质参数,探讨了冲击倾向性与其相关性,给出了判定指标。通过大佛寺煤矿、白龙山煤矿、华丰煤矿比较与分析,表明本底板冲击倾向性判定方法可行,判别依据可靠。建议建立底板岩层冲击倾向性鉴定方法与标准。The identification of impact tendency of coal and roof has become a national standard.However,it is still an urgent problem to determine the criterion and method of floor impact tendency.After analyzing the structure of floor rock,load transfer path and failure mechanism,a method for calculating the impact tendency of the bottom plate based on the bending strain energy formula was proposed.Based on the conventional mechanical properties of the floor rock,the impact tendency and its correlation were discussed,and the decision index was given.Through the comparison and statistical analysis of Dafosi Coal Mine,Bailongshan Coal Mine and Huafeng Coal Mine,it showed that the method was feasible and reliable.The method and standard of the evaluation of impact tendency of floor rock strata was proposed.

关 键 词：底板岩层 力学模型 冲击倾向性 弯曲能量指数 判定方法 

分 类 号：TD324[矿业工程—矿井建设]