CAJ | 학술논문

为提高松软突出煤层瓦斯抽采效果 ,通过分析水力压裂煤体致裂增透消突机理 ,在逢春煤矿石门揭煤工作面 ,采用高压水力压裂增透技术 ,进行水力压裂增透 ,并预抽煤层瓦斯 ,然后揭煤.水力压裂增透后,瓦斯抽采效果得到大幅提高,预抽达标时间缩短了220 d.揭煤过程中,突出预测指标明显降低 ,未出现预测超标现象;并且揭煤工期缩短了40% ,提高了石门揭煤施工效率.
위제고송연돌출매층와사추채효과 ,통과분석수력압렬매체치렬증투소돌궤리 ,재봉춘매광석문게매공작면 ,채용고압수력압렬증투기술 ,진행수력압렬증투 ,병예추매층와사 ,연후게매.수력압렬증투후,와사추채효과득도대폭제고,예추체표시간축단료220 d.게매과정중,돌출예측지표명현강저 ,미출현예측초표현상;병차게매공기축단료40% ,제고료석문게매시공효솔.
In order to improve the gas drainage effect of the soft and outburst seam ,with the analysis on the outburst elimination mechanism with the seam fracturing and permeability improving by the hy-draulic pressure fracturing ,in the seam opening working face in the crosscut of Fengchun Mine ,the high pressure hydraulic fracturing and permeability improving technology was applied to the hydraulic fracturing and permeability improvement .After the gas pre-drainage of the seam conducted ,the seam opening was made .After the hydraulic pressure fracturing and permeability improving ,the gas drai-nage effect was highly improved and the pre-drainage target time was reduced by 220 days .During the seam opening process ,the outburst predicted index was obviously reduced and there was no overlimit phenomenon of the prediction occurred .The seam opening period was reduced by 40% and the seam opening construction efficiency in the mine crosscut w as improved .