摘要
针对霍尔辛赫3103工作面回采期间各钻场钻孔抽采的参数数据,进行对比分析,表明高层位抽采钻孔以抽采裂隙带瓦斯为主,低层位抽采钻孔以截抽上隅角瓦斯为主;终孔间距低于15 m的钻孔,抽采效果不理想,浓度及纯流量均较低,钻孔终孔位置距离顶板大于15m的区域抽采效果较好;钻场压茬影响距离在16~20 m,在钻场压茬接替周期内瓦斯抽采量均有不同程度的降低。同时指出该工作面回采期间瓦斯抽采中显现的问题,对后期回采工作面瓦斯治理和抽采提出建议。
The contrast analysis of parameter data of hole drainage form various drilling fields during mining of 3103 Huoerxinhe working face showed that high level pumping boreholes were dominated by gas in fractured zone,and low level pumping boreholes were dominated by gas on the corner; the extraction effect was poor with final hole spacing which was below 15 m,as well as its concentration and pure volume,but the effect was better whose distance between final hole drilling location and roof was more than 15 m; influence distance of drill field stubble was 16 ~ 20 m,and in period of drill yard stubble replacement,the gas extraction rate was reduced in different degrees.At the same time,emerging problems in gas drainage were pointed,which provided advice to gas control and extraction in late mining face.
出处
《煤炭与化工》
CAS
2017年第10期130-134,共5页
Coal and Chemical Industry
关键词
瓦斯
钻孔
抽采
浓度
效果
gas
drilling
drainage
concentration
effec
作者简介
许广（1981-），男，山西长治人，工程师。E-mail：1075348477@qq．com
