水道港口2024，Vol.45Issue(1)：123-130,8.
秸秆排水体联合间歇抽真空处理疏浚泥试验研究
Experimental study on the dredged slurry treated by intermittent vacuum preloading combined with straw drainage body
摘要
Abstract
In order to clarify the reinforcement effectof dredged slurry treated by intermittent vacuum preloading combined with straw drainage body,indoor model tests were carried out on dredging slurry with different intermittent vacuum.The treatment effect of dredged slurry under different intermittent vacuum was studied.The results show that compared with the constant vacuum loading,the intermittent vacuum preloading can reduce the silting of the filter cloth of the drainage body,improve the vacuum transfer efficiency in the soil,and thus improve the reinforcement effect of dredged slurry after vacuum preloading treatment.Through comprehensive comparative analysis,for the straw drainage boday and dredged slurry used in this paper,the mode of vacuum load with intervals of 12 hours is more effective.Compared with the traditional constant vacuum loading,the accumulated water yield of dredged slurry is increased by 15%,the shear strength of cross plate is increased by 32.7%,and the water content of soil is decreased by 19.3%.In addition,the degradation of straw affects the vacuum transfer effect of the drainage body.With the continuous degradation of straw,the vacuum inside the straw drainage body starts to show an obvious decreasing trend after about 10 d.关键词
秸秆排水体/间歇式真空预压/疏浚淤泥/模型试验/真空度Key words
straw drainage body/intermittent vacuum preloading/dredged slurry/model test/vacuum degree分类
交通工程引用本文复制引用
姚达,周志彦,徐桂中,张丹,郭植恒..秸秆排水体联合间歇抽真空处理疏浚泥试验研究[J].水道港口,2024,45(1):123-130,8.基金项目
国家自然科学基金项目(52078449) （52078449）
江苏南水北调科技项目(JSNSBD201910) （JSNSBD201910）
