中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2013年
10期
59-62
,共4页
永久冻土%钻孔设计%钻具%冲洗液%钻效%木里煤田
永久凍土%鑽孔設計%鑽具%遲洗液%鑽效%木裏煤田
영구동토%찬공설계%찬구%충세액%찬효%목리매전
permafrost%borehole design%drilling tools%flush fluid%drilling efficiency%Muri coalfield
木里煤田属高寒缺氧地区，冻土（岩）层在钻进中遇热融解、融化，从而使孔内出现大范围的坍塌，造成卡钻、埋钻事故频发，给钻探施工及岩煤心采取带来很大的困难。从钻孔结构设计、钻具选择、低温冲洗液配置等方面进行深入研究，总结出来了一套适用于木里煤田永久冻土地层的钻探技术。应用表明，该项技术将钻月效率从2004年的224m，提高到2006年的424.5m，效果显著。
木裏煤田屬高寒缺氧地區，凍土（巖）層在鑽進中遇熱融解、融化，從而使孔內齣現大範圍的坍塌，造成卡鑽、埋鑽事故頻髮，給鑽探施工及巖煤心採取帶來很大的睏難。從鑽孔結構設計、鑽具選擇、低溫遲洗液配置等方麵進行深入研究，總結齣來瞭一套適用于木裏煤田永久凍土地層的鑽探技術。應用錶明，該項技術將鑽月效率從2004年的224m，提高到2006年的424.5m，效果顯著。
목리매전속고한결양지구，동토（암）층재찬진중우열융해、융화，종이사공내출현대범위적담탑，조성잡찬、매찬사고빈발，급찬탐시공급암매심채취대래흔대적곤난。종찬공결구설계、찬구선택、저온충세액배치등방면진행심입연구，총결출래료일투괄용우목리매전영구동토지층적찬탐기술。응용표명，해항기술장찬월효솔종2004년적224m，제고도2006년적424.5m，효과현저。
The Muri coalfield is situated in an Alpine hypoxia area, the frozen soil (rock) will be heat melted and thawed during drilling. Accordingly, wide range collapses happened in boreholes, frequent accidents of drill pipe sticking and covered tools caused great diffi-culties to operation and coal coring. Intensive study from aspects of borehole configuration, drilling tool selection, cryogenic flush fluid disposition etc., summed up a whole set of drilling technology adequate for permafrost strata in Muri coalfield. Practices have demon-strated that the technology has upgraded monthly drilling efficiency from 224m in 2004 to 424.5m in 2006, thus significant effect.
