文献类型：期刊文献

英文题名：Evolution Characteristics of Overburden Strata Structure for Ultra-Thick Coal Seam Multi-Layer Mining in Xinjiang East Junggar Basin

作者：Wang, Xufeng Qin, Dongdong Zhang, Dongsheng Guan, Weiming Xu, Mengtang Wang, Xuanlin Zhang, Chengguo

第一作者：Wang, Xufeng

通信作者：Wang, XF[1];Wang, XF[2];Wang, XF[3]

机构：[1]China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China;[2]China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China;[3]China Univ Min & Technol, Jiangsu Lab Mining Induced Seism Monitoring, Xuzhou 221116, Jiangsu, Peoples R China;[4]Xinjiang Univ, Coll Geol & Min Engn, Urumqi 830046, Peoples R China;[5]Guizhou Inst Technol, Sch Mines, Guiyang 550003, Guizhou, Peoples R China;[6]Univ New South Wales, Sch Min Engn, Sydney, NSW 2052, Australia

第一机构：China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China

通信机构：corresponding author), China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China;corresponding author), China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China;corresponding author), China Univ Min & Technol, Jiangsu Lab Mining Induced Seism Monitoring, Xuzhou 221116, Jiangsu, Peoples R China.

年份：2019

卷号：12

期号：2

外文期刊名：ENERGIES

收录：;EI(收录号：20190506440554);Scopus(收录号：2-s2.0-85060551856);WOS:【SCI-EXPANDED(收录号:WOS:000459743700133)】；

基金：This research was supported by the National Natural Science Foundation of China (Grant No.51474206, No.51404254), National Key Basic Research Program of China (973 Program-No.2015CB251600), the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

语种：英文

外文关键词：ultra-thick coal seam; multi-layer mining; overlying strata structure; shield and surrounding rock interaction

摘要：The efficient and safe extraction of ultra-thick coal seam in the Xinjiang East Junggar Basin has been a major focus in the future of mining in China. This paper systematically studied the overburden strata fracturing process and the structure evolution characteristics based on a typical ultra-thick coal seam condition in Xinjiang, using both physical and numerical modeling studies. The interactions between shields and the roof strata were also examined, from the perspective of ground support. The results indicated that roof structure was mainly in the form of voussoir beam at the early mining stage, where overburden stability was affected by the rock mass properties and mining parameters. The support load mainly included top coal and immediate roof gravity load and the load caused by main roof rotary consolidation. As a result of mining disturbance and strata movement, the overlying strata re-fractured in the later mining stage. The roof structure changed from beam to arch gradually and propagates upwards with the increase of multi-layer mining times. The support load was mainly the gravity load of the friable rock mass within compression arch. The results will provide a guideline for the improvement of roof stability under similar mining conditions in Xinjiang.