煤矿现代化
煤礦現代化
매광현대화
Coal Mine Modernization
2015年
6期
95-97
,共3页
采空区%瓦斯治理%低位巷%穿层钻孔
採空區%瓦斯治理%低位巷%穿層鑽孔
채공구%와사치리%저위항%천층찬공
goaf%gas control%low position roadway%borehole
基于平宝煤业公司己15-17-12041回采工作面采空区瓦斯涌出量大，引发工作面上隅角及回风流中瓦斯浓度过大的问题。采用了低位巷大孔径穿层钻孔治理采空区瓦斯的措施，并在回风平巷钻孔末端安装一个朝向采空区方向的90°弯头，利用抽放负压的作用将工作面采空区瓦斯由上隅角向采空区深部运移。将过去以“封堵”治理上隅角瓦斯的指导思想转变为“疏导”。使得工作面上隅角及回风流中瓦斯浓度由原来的0.56%～0.86%、0.4%～0.75%转变为0.18%～0.34%、0.05%～0.17%。效果非常显著，通过对采空区瓦斯的治理消除了工作面上隅角及回风流中瓦斯浓度超限的威胁。
基于平寶煤業公司己15-17-12041迴採工作麵採空區瓦斯湧齣量大，引髮工作麵上隅角及迴風流中瓦斯濃度過大的問題。採用瞭低位巷大孔徑穿層鑽孔治理採空區瓦斯的措施，併在迴風平巷鑽孔末耑安裝一箇朝嚮採空區方嚮的90°彎頭，利用抽放負壓的作用將工作麵採空區瓦斯由上隅角嚮採空區深部運移。將過去以“封堵”治理上隅角瓦斯的指導思想轉變為“疏導”。使得工作麵上隅角及迴風流中瓦斯濃度由原來的0.56%～0.86%、0.4%～0.75%轉變為0.18%～0.34%、0.05%～0.17%。效果非常顯著，通過對採空區瓦斯的治理消除瞭工作麵上隅角及迴風流中瓦斯濃度超限的威脅。
기우평보매업공사기15-17-12041회채공작면채공구와사용출량대，인발공작면상우각급회풍류중와사농도과대적문제。채용료저위항대공경천층찬공치리채공구와사적조시，병재회풍평항찬공말단안장일개조향채공구방향적90°만두，이용추방부압적작용장공작면채공구와사유상우각향채공구심부운이。장과거이“봉도”치리상우각와사적지도사상전변위“소도”。사득공작면상우각급회풍류중와사농도유원래적0.56%～0.86%、0.4%～0.75%전변위0.18%～0.34%、0.05%～0.17%。효과비상현저，통과대채공구와사적치리소제료공작면상우각급회풍류중와사농도초한적위협。
Due to the gas a large quantity of emission in Ping Bao coal company 12041 mining working area goaf,this problem caused gas concentration becoming very high in the mining working area upper corner and at air return drift tunnel. So we took a measure of low position roadway large aperture borehole to reduce the gas in goaf,moreover installing a 90°elbow faced with goaf at air return drift tunnel drill end. It could make use of the negative pressure to make gas flow to the deep goaf. The result was that the gas concentration in upper corner and at air return drift tunnel was becoming from 0.56% ~ 0.86%,0.4% ~ 0.75% into 0.18% ~ 0.34%,0.05% ~ 0.17%. The effect was very signifi-cant,and it eliminated the threat of gas concentration overrun.
