探矿工程-岩土钻掘工程2016，Vol.43Issue(2)：70-72,3.
软土地层地下连续墙成槽护壁泥浆研究
Application Research on Properties of Protection Slurry for Diaphragm Retaining Wall Trenching in Soft Soil
摘要
Abstract
For the construction of diaphragm retaining wall trenching in sand-bearing soft soil layer, the construction quality will be affected by the collapse of side wall of trench.Water loss reducing, appropriate slurry viscosity increasing and col-lapse prevention are the key for wall protection in trenching.According to the geological conditions of a diaphragm retaining wall trenching engineering in Ningbo, partially hydrolyzed polyacrylamide (PHP), calcium polyacrylonitrile (CPAN) and potassium nitryl humate ( NKHm) were taken as additives;the optional ratio of slurry performance was ascertained by the orthogonal test.The test results show that when using PHP, the amount of water loss is small with thin mud cake; CPAN and NKHm have evident effects on fluid loss control with moderate viscosity.The test result is applied in the engineering practice and the good effect of wall protection is received.关键词
地下连续墙/泥浆护壁/正交试验/软土地层Key words
diaphragm retaining wall/wall protection by slurry/orthogonal test/soft soil layer分类
交通工程引用本文复制引用
董宏波,王子阳,钱宏春..软土地层地下连续墙成槽护壁泥浆研究[J].探矿工程-岩土钻掘工程,2016,43(2):70-72,3.基金项目
宁波市自然科学基金(编号:2013A610199) （编号:2013A610199）
