摘要
为了解决急倾斜特厚煤层水平分段浅部开采工作面存在漏风严重、隅角气体积聚、受自然风压影响较大、工作面氧气浓度过低等问题,以乌东煤矿+600水平45#煤层东翼综采工作面为工程背景,根据现场实测数据,提出了均压通风方案及监测方法,确保了工作面与采空区风压平衡。通过对采取均压通风前后回风隅角CH_(4)、CO、O_(2)浓度以及工作面漏风量进行现场实测,结果表明:均压通风系统在防止隅角气体积聚、工作面低氧、减少采空区漏风方面起到了较好作用;通过对均压区进行连续观测,均压系统的稳定性较好,对于矿井的安全生产具有重要意义。
In order to solve the problems of severe air leakage, corner gas accumulation, influence of natural wind pressure, and low oxygen concentration in the shallow mining face of the horizontally sectioned mining face of steeply inclined and extra-thick coal seams, the fully mechanized coal mining face in the 45# coal seam east wing of Wudong Coal Mine +600 level is taken as the research background. Based on the measured data on site, a pressure equalization ventilation scheme and monitoring method are proposed to balance the wind pressure between the working face and goaf. Through the on-site measurement of the CH_(4), CO, O_(2) concentration of the return air corner and the air leakage of the working face before and after implementation of pressure equalization ventilation, the results show that, the pressure equalization ventilation system can prevent gas accumulating in corner, keep the low oxygen state in the working face, and reduce air leakage in the goaf. According to the continuous observation in the pressure equalization zone, the system stability is favorable, which is of great significance to the mine safe production.
作者
孙秉成
杜昌昂
丁文龙
王刚
SUN Bing-cheng;DU Chang-ang;DIN G Wen-long;WANG Gang(Wudong Coal Mine,Shenhua Xinjiang Energy Co.,Ltd.,Urumchi 830002,China;School of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《煤炭工程》
北大核心
2021年第6期77-81,共5页
Coal Engineering
基金
2018年新疆维吾尔自治区引进高层次人才天池百人计划(新人社函[2019]39号)。
关键词
急倾斜特厚煤层
综采工作面
均压通风
气体积聚
防漏风
steeply inclined and extremely thick coal seam
fully mechanized working face
pressure equalization ventilation
gas accumulation
air leakage prevention
