Overburden fracture evolution laws and water-controlling technologies in mining very thick coal seam under water-rich roof

作     者：Zhang Youxi Tu Shihao Bai Qingsheng Li Jianjun 

作者机构：School of MinesKey Laboratory of Deep Coal ResourceMinistry of Education of ChinaChina University of Mining & Technology Datong Coal Mine Group Co.Ltd. 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2013年第23卷第5期

页      面：693-700页

核心收录：

学科分类：081901[工学-采矿工程] 0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：provided by the Priority Academic Program Development of Jiangsu Higher Education Institutions of China(No.SZBF2011-6-B35) the Fundamental Research Funds for the Central Universities of China(No.2012LWB42) 

主　　题：Water-rich roof Very thick coal seam Mining induced fracture Evolution law Water-controlling technology 

摘      要：Considering the danger of water inrush in mining very thick coal seam under water-rich roof in Majialiang Coal Mine,the universal discrete element(UDEC)software was used to simulate the overburden fracture evolution laws when mining 4#coal ***,this study researched on the influence of face advancing length,speed and mining height on the height of the water flowing fractured zones(HWFFZ),and analyzed the correlation of face advancing length and change rules of aquifer water levels and goaf water *** on those mentioned above,this research proposed the following water-controlling technologies:draining the roof water before mining,draining goaf water,reasonable advancing speed and mining *** water-controlling technologies were successfully used in the feld,thus ensured safely mining the very thick coal seam under water-rich roof.