Study on the optimum position of gas extraction in goaf of high position borehole based on CFD

	Study on the optimum position of gas extraction in goaf of high position borehole based on CFD
	Yan, Baoyong 2; Zhang, Xiaoze 3; Li, Yibin 1
	2019
会议日期	July 6, 2019
会议地点	Chongqing, China
关键词	Boreholes Computer simulation Extraction Hole concentration Project management Best position Gas concentration Gas extractions Gas migration Optimum position Target location The Goaf Upper corner
页码	786-793
英文摘要	In order to study the effect of gas extraction by high position borehole in goaf, and determine the best position of the borehole, it provides a reference for the selection of gas extraction target location by high position borehole in the future. Based on the goaf of 40113 working face of a mine in Fenxi Group of Shanxi Province, the gas migration model is established. and the gas extraction effect of high position borehole under different target strata is simulated by FLUENT. The results show that the gas concentration in the upper corner of the working face is reduced from 2.3% to 0.7% after using high position borehole to extract gas by compared with the non-extraction situation, which solves the problem of gas concentration exceeding the limit in the upper corner of the working face. When high position borehole of the distance from the floor of goaf is 26m,and the distance from the level of return air roadway is 25m, the gas concentration in the upper corner of the working face is 0.58%, and the gas concentration in the hole is the highest and the purity is the largest. © 2019 by Aussino Academic Publishing House.
会议录	Conference Proceedings of the 7th International Symposium on Project Management, ISPM 2019
会议录出版者	Aussino Academic Publishing House
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118126]
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.Chongqing Research Institute of China Coal Technology and Engineering Group, Chongqing; 400039, China; 3.State Key Lab. of Gas Disaster Monitoring and Control as well as Emergency Technology, Chongqing; 400039, China;
推荐引用方式 GB/T 7714	Yan, Baoyong,Zhang, Xiaoze,Li, Yibin. Study on the optimum position of gas extraction in goaf of high position borehole based on CFD[C]. 见:. Chongqing, China. July 6, 2019.