煤
煤
매
COAL
2014年
9期
23-25
,共3页
瓦斯赋存%煤与瓦斯突出%瓦斯抽采%区域防突措施%效果检验
瓦斯賦存%煤與瓦斯突齣%瓦斯抽採%區域防突措施%效果檢驗
와사부존%매여와사돌출%와사추채%구역방돌조시%효과검험
gas occurrence%coal and gas outburst%the gas extraction%regional outburst prevention measures%effect of inspection
祁南煤矿地质条件复杂，为煤与瓦斯突出矿井，72煤层为突出煤层。716工作面位于72煤层突出危险区，煤层原始瓦斯含量为9.4~11.7 m3/t，采取顺层钻孔预抽为主、底板穿层钻孔预抽为辅的区域防突措施后；采用直接测定最大残余瓦斯含量、用抽采量反算残余瓦斯含量、钻屑瓦斯解吸指标△h2检验消突效果，各项指标均小于临界值，综合分析认为716工作面抽采后已消除突出危险。
祁南煤礦地質條件複雜，為煤與瓦斯突齣礦井，72煤層為突齣煤層。716工作麵位于72煤層突齣危險區，煤層原始瓦斯含量為9.4~11.7 m3/t，採取順層鑽孔預抽為主、底闆穿層鑽孔預抽為輔的區域防突措施後；採用直接測定最大殘餘瓦斯含量、用抽採量反算殘餘瓦斯含量、鑽屑瓦斯解吸指標△h2檢驗消突效果，各項指標均小于臨界值，綜閤分析認為716工作麵抽採後已消除突齣危險。
기남매광지질조건복잡，위매여와사돌출광정，72매층위돌출매층。716공작면위우72매층돌출위험구，매층원시와사함량위9.4~11.7 m3/t，채취순층찬공예추위주、저판천층찬공예추위보적구역방돌조시후；채용직접측정최대잔여와사함량、용추채량반산잔여와사함량、찬설와사해흡지표△h2검험소돌효과，각항지표균소우림계치，종합분석인위716공작면추채후이소제돌출위험。
Qinan coal Mine is gas outburst mine under complex geological conditions,72 coal seam is outburst coal seam. Highlight the danger zone and 716 working face in 72 coal seam primitive gas content of 9. 4~11. 7 m3/t,take bedding drilling drainage supplemen-ted,bottom wear later drilling drainage area after the outburst prevention measures;the maximum residual gas content determination of directlt using the the drainage Quantitt inverse residual gas content,the gas desorption index of drill cuttings test h2 eliminating outburst effect,the indicators are less than the critical value,the comprehensive analtsis shows that 716 face danger elimination after extraction has been outstanding.
