山东煤炭科技2025，Vol.43Issue(2)：22-26,37,6.DOI:10.3969/j.issn.1005-2801.2025.02.005
煤矿井下"V"形采煤工作面开采研究
Research on Mining of"V"-shaped Coal Mining Working Face in Coal Mine Downhole
廖永游1
作者信息
- 1. 国网能源哈密煤电有限公司大南湖一矿,新疆 哈密 839000
- 折叠
摘要
Abstract
In order to solve the problems of reduced working face coal resource recovery rate,production efficiency and so on caused by the influence of two synclinal axes on the 1309 working face of Dananhu No.1 Mine,a new type of mining method for working faces under special geological conditions,the"V"-shaped coal mining working face mining method,is proposed.Through similar material simulation experiments and carrying out on-site industrial tests,in-depth research is conducted on aspects such as characteristics,coal mining technology,key technologies,mining precautions and others of the"V"-shaped coal mining working face.The results show that the height of the roof overburden rock caving zone is 20 m and the height of the fault zone is 118 m;Determine the coal discharge height for two zones higher than the surface,two zones overlapping the surface,and two zones lower than the surface;Adopting the method of setting up single body hydraulic support and removing and reducing bracket to ensure effective support at both ends of the working face during the stoping period;The way of continuous nitrogen injection and spraying of flame retardants are adopted for fire prevention and extinguishing in the goaf of the working face,with a nitrogen injection flow rate of not less than 225 m3/h.关键词
回收率/"V"形工作面/开采工艺/不等长分析/两带/上窜下滑Key words
recovery rate/"V"-shaped working face/mining technology/unequal length analysis/two zones/up and down分类
矿业与冶金引用本文复制引用
廖永游..煤矿井下"V"形采煤工作面开采研究[J].山东煤炭科技,2025,43(2):22-26,37,6.
