文献类型：期刊文献

英文题名：Occurrence Characteristic and Mining Technology of Ultra-thick Coal Seam in Xinjiang, China

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

第一作者：Qin, Dongdong

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, Jiangsu Engn Lab Mine Earthquake Monitoring & Pre, Xuzhou 221116, Jiangsu, Peoples R China;[3]China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, 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, Peoples R China

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, Jiangsu Engn Lab Mine Earthquake Monitoring & Pre, 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.

年份：2019

卷号：11

期号：22

外文期刊名：SUSTAINABILITY

收录：;Scopus(收录号：2-s2.0-85075860560);WOS:【SSCI(收录号:WOS:000503277900283)，SCI-EXPANDED(收录号:WOS:000503277900283)】；

基金：This research was funded by the National Natural Science Foundation of China, grant number 51474206 and 51404254; National Key Basic Research Program of China, grant number 973 Program- No.2015CB251600 and 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; shield and surrounding rock interaction; roof bearing structure; mining technology; multi-layer mining

摘要：The scientific and efficient mining of ultra-thick coal seam in Xinjiang, China is faced with the problems of low exploration level and lack of theoretical research on underground mining. This paper studied occurrence characteristic of ultra-thick coal seams in Xinjiang, using field investigation and drilling exploration. Based on the variation law of support load under different roof bearing structure form and development height in multi-layer mining, classification method and mining technology selection of ultra-thick coal seam were put forward. The results indicate that: (1) The ultra-thick coal seams in Xinjiang have a distribution characteristic of more north and less south, more east and less west, mainly concentrate in East Junggar and Turpan-Harmi coalfields. The form of the ultra-thick coal seam has the remarkable characteristic of coal seams merging and bifurcating. (2) The mechanical model of the relationship between the support and surrounding rock under different roof bearing structures is established. At the early stage of multi-layer mining, the support load includes the load caused by rotary subsidence of the blocks that formed the near-stope roof bearing structure and the gravity load of rock blocks under roof bearing structure. At the later stage, the support load is mainly gravity load of loose blocks below the far-stope roof bearing structure. (3) According the roof bearing structure form, ultra-thick coal seam can be divided into three types: no stable bearing structure, (higher) beam bearing structure and arch bearing structure. In order to ensure the stability of near-stope roof bearing structure, backfill mining, longwall mining, and longwall mining early and backfill mining later should be adopted in three types ultra-thick coal seams mining respectively.