Comprehensive gas control in upper corner of ' U ' type ventilation in No.8103 Face of Shenzhou Coal Industry Company
Ning Min 1, 2, Wang Qiang 1, He Lei 1, Hu Pengjun 1
1. Jinneng Holding Coal Group Taiyuan Coal Gasification Shenzhou Coal Company, Lvliang 033000, China;
2. Safety Science and Engineering College, Xi 'an University of Science and Technology, Xi 'an 710054, China
Abstract：Aiming at the problems of gas accumulation and over-limit in the upper corner of ' U ' type ventilation in 8103 fully mechanized mining face of Shenzhou Coal Industry Co., Ltd., by analyzing the causes of gas over-limit in the upper corner, comprehensive control measures such as low negative pressure and large flow buried pipe drainage in goaf, kilometer directional high-level borehole drainage in goaf roof, upper corner intubation, air guide tube drainage and installation of windshield are adopted. Through practice, the gas concentration ( T0 ) in the upper corner of No.8103 Face is reduced from about 1.5 % at the initial mining to about 0.3 %, and the gas concentration ( T2 ) in the return air flow is reduced from about 0.8 % to about 0.2 %. The results show that the above measures have a good effect on the gas control in the upper corner, which ensures the safe production of the ' U ' type ventilation fully mechanized working face.
宁 敏1,2，王 强1，何 磊1，胡彭俊1. 神州煤业公司8103工作面“U”型通风上隅角瓦斯综合治理[J]. 煤炭与化工, 2023, 46(2): 95-97.
Ning Min 1, 2, Wang Qiang 1, He Lei 1, Hu Pengjun 1. Comprehensive gas control in upper corner of ' U ' type ventilation in No.8103 Face of Shenzhou Coal Industry Company. CCI, 2023, 46(2): 95-97.
