反吹钻具在破碎地层中的应用  

The Application of Reverse-Blowing Drilling Tools in Cracked Stratum

作　　者：罗永葵[1] 程超元 吴立华[3] 

机构地区：[1]四川准达岩土工程有限公司,四川成都610072 [2]四川省威成工程技术开发有限公司,四川成都610036 [3]吉林省梅河口市职教中心,吉林梅河口135000

出　　处：《地质装备》2009年第1期24-24,17,共2页Equipment for Geotechnical Engineering

摘　　要：锦屏一级水电站左岸导流洞出口边坡非开挖原始坡面,岩石非常破碎,造孔过程中冲洗液漏失严重,孔口不出岩渣,钻进过程中常出现卡钻、孔壁掉块等事故现场采用自己设计加工的反吹钻具,岩渣大多可以随风吹出孔外,效果良好。In serious cracked rock condition at the natural slope of a dam, drill rod sticking trouble is often happen during drilling. This problem is well settled with a reverse-blowing drilling tool designed by the authors.

关 键 词：反吹钻具 破碎地层 应用 

分 类 号：P634.4[天文地球—地质矿产勘探] TU475.9[天文地球—地质学]