路基工程Issue(4)：95-101,7.DOI:10.13379/j.issn.1003-8825.202307007
粉细砂地层水平定向钻最佳泥浆配比试验研究
Experimental Study on the Optimum Slurry Ratio of Horizontal Directional Drilling in Silt-Sandy Strata
张鼎 1杨乃全 1彭捷 1宋福原1
作者信息
- 1. 中交天航南方交通建设有限公司,广东深圳 518000
- 折叠
摘要
Abstract
Based on the pipe network expansion and reconstruction project in Gaoyao District of Zhaoqing City,aiming at the problem that horizontal directional drilling construction is prone to hole collapse under the geological condition of fine sand layer,the optimal ratio of suitable slurry is determined by laboratory test,and verified by soil sample immersion test.The results show that the content of bentonite and sodium carboxymethyl cellulose have the greatest influence on the performance of slurry.Due to the serious soil and water separation after standing,the rheology,viscosity and pulping properties of pure calcium bentonite slurry are poor,which cannot be directly applied to practical projects.The best slurry ratio suitable for the silt-sandy strata in Zhaoqing area is water∶calcium bentonite∶sodium carboxymethyl cellulose∶polyacrylamide∶sodium carbonate=1000.00∶70.00∶2.00∶0.01∶2.00;Indoor immersion test and field application verify that the slurry with this ratio has the best performance and good economy,which can solve the problem of hole collapse during construction.关键词
水平定向钻/膨润土/泥浆配比/粉细砂/塌孔/护壁Key words
horizontal directional drilling/bentonite/slurry ratio/silty-sand/hole collapse/wall protection分类
建筑与水利引用本文复制引用
张鼎,杨乃全,彭捷,宋福原..粉细砂地层水平定向钻最佳泥浆配比试验研究[J].路基工程,2024,(4):95-101,7.
