Dynamic disaster control of backfill mining under thick magmatic rock in one side goaf:A case study

作     者：XUE Yan-chao XU Tao WASANTHA P L P YANG Tian-hong FU Teng-fei 薛彦超;徐涛;WASANTHA P L P;杨天鸿;付腾飞

作者机构：Center for Rock Instability and Seismicity ResearchNortheastern UniversityShenyang 110819China Key Laboratory of Ministry of Education on Safe Mining of Deep Metal MinesNortheastern UniversityShenyang 110819China College of Engineering and ScienceVictoria UniversityMelbourneAustralia 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第10期

页      面：3103-3117页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Project(2017YFC1503100)supported by the National Key Research and Development Program of China Projects(51974062,41672301,51811530312)supported by the National Natural Science Foundation of China Project(N180101028)supported by the Fundamental Research Funds for the Central Universities,China 

主　　题：backfill mining thick magmatic rock one side goaf dynamic disaster numerical simulation 

摘      要：In order to explore the control effect of backfill mining on dynamic disasters under special geological mining conditions of overlying thick magmatic rock(TMR),a three-dimensional numerical model of a panel of one side goaf in Yangliu coal mine with double-yield backfill material constitutive model was *** simulation results were then compared with field monitoring *** dynamic disaster control effect of both caving and backfill mining was analyzed in three different aspects,i.e.,displacement field,stress field and energy *** results show that in comparison to the full caving mining method,the bearing capacity of the goaf after backfilling was enhanced,the backfill mining can effectively reduce the stress and energy accumulated in the coal/rock body,and the backfill mining eliminates the further moving space of TMR and prevents its sudden *** TMR fracture,the subsidence displacement of TMR was reduced by 65.3%,the front abutment stress of panel decreased by 9.4%on average and the high energy concentration zone around panel was also significantly ***,the results of this study provide deeper insights into the control of dynamic disasters by backfill mining in mines.