中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2015年
9期
1084-1087
,共4页
徐文全%邓增社%侯恩科%张连君%赵泓超
徐文全%鄧增社%侯恩科%張連君%趙泓超
서문전%산증사%후은과%장련군%조홍초
瓦斯抽采%钻孔%动态密封%浓度
瓦斯抽採%鑽孔%動態密封%濃度
와사추채%찬공%동태밀봉%농도
gas drainage%borehole%dynamic sealing technology%concentration
为了增强瓦斯抽采钻孔密封效果,提高瓦斯抽采效率,提出了瓦斯抽采钻孔动态密封技术。通过“两堵”主动支撑密闭和注入不凝固黏稠膏体材料进行密封,可有效封堵钻孔及周围煤体裂隙,并在钻孔受扰动影响而密封失效后,采取二次或多次注浆以提高钻孔瓦斯抽采浓度,延长瓦斯抽采钻孔使用期限,提高瓦斯抽采效率。经现场验证,动态密封技术密封效果优于常规水泥注浆封孔,且在二次注浆后抽采浓度明显上升,有效解决了传统瓦斯抽采钻孔密封效果差、固态封孔易漏气、密封失效难以补救等技术难题。该技术具有一定的推广意义。
為瞭增彊瓦斯抽採鑽孔密封效果,提高瓦斯抽採效率,提齣瞭瓦斯抽採鑽孔動態密封技術。通過“兩堵”主動支撐密閉和註入不凝固黏稠膏體材料進行密封,可有效封堵鑽孔及週圍煤體裂隙,併在鑽孔受擾動影響而密封失效後,採取二次或多次註漿以提高鑽孔瓦斯抽採濃度,延長瓦斯抽採鑽孔使用期限,提高瓦斯抽採效率。經現場驗證,動態密封技術密封效果優于常規水泥註漿封孔,且在二次註漿後抽採濃度明顯上升,有效解決瞭傳統瓦斯抽採鑽孔密封效果差、固態封孔易漏氣、密封失效難以補救等技術難題。該技術具有一定的推廣意義。
위료증강와사추채찬공밀봉효과,제고와사추채효솔,제출료와사추채찬공동태밀봉기술。통과“량도”주동지탱밀폐화주입불응고점주고체재료진행밀봉,가유효봉도찬공급주위매체렬극,병재찬공수우동영향이밀봉실효후,채취이차혹다차주장이제고찬공와사추채농도,연장와사추채찬공사용기한,제고와사추채효솔。경현장험증,동태밀봉기술밀봉효과우우상규수니주장봉공,차재이차주장후추채농도명현상승,유효해결료전통와사추채찬공밀봉효과차、고태봉공역루기、밀봉실효난이보구등기술난제。해기술구유일정적추엄의의。
To improve the sealing effect and efficiency of borehole gas drainage,a dynamic sealing technology was proposed. Using ‘two-site blockage’as sealing support and injecting non-condensable,pasty material can effectively seal the fracture around the borehole in the coal seam.And even there exists the sealing failure of the borehole due to the disturbance,adopting the second or multiple grouting technology can improve the borehole gas concentration and drainage efficiency and extend the service life of the borehole.The experiments show that the sealing effect of dynamic sealing technology for borehole gas drainage is much better than traditional sealing cement grouting technology,and the gas drainage concentration is significantly increased after the second grouting.The technical problems such as poor sealing effects,easy leakage of solid sealing,and irreparable after sealing failure appeared in traditional borehole gas drainage can be effectively solved with this technology,which makes it meaningful for future generalization.