摘要
长距离顶管施工中除了克服迎面阻力外,尚需克服巨大的侧面摩擦阻力,故直接顶进非常困难。探讨了利用膨润土泥浆注浆以减小顶进阻力的技术。对注浆材料的结构、注浆工艺和减摩机理进行了较为系统的阐述,并结合工程实例对长距离顶管中顶进力的理论值与实际值做了比较。结果表明,注浆减摩效果十分明显。该技术值得在实际工程中推广应用。
Long distance pipe jacking is very difficult,as both the soil or rocks in the front of the cutting head and the great side frictional resistance need to be overcome.The article discussed the technique of using bentonite slurry to reduce the jacking resistance;systematically described grouting material structure,grouting technology and the mechanism of friction reduction and make the comparison between theoretical and actual values of jacking force in long distance pipe jacking based on the engineering case.The results showed that the effect of friction reduction by slurry injection was very noticeable,which is worth being applied in the similar projects.
出处
《探矿工程（岩土钻掘工程）》
2010年第12期65-67,73,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
长距离顶管
阻力
膨润土泥浆
注浆减摩
非开挖
long distance pipe jacking
resistance
bentonite slurry
reducing friction through injecting slurry
trenchless technology
作者简介
简崇林（1985-），男（汉族），湖北成宁人，中国地质大学（北京）硕士研究生，地质工程专业，从事地质工程数值模拟与信息系统以及非开挖技术研究工作，北京市海淀区学院路29号中国地质大学（北京）S09工程，465895151@qq．com。
