河道疏浚淤泥资源化制备工程土技术研究:襄阳市护城河清淤工程典型实例  

The Resource Reutilization of River Dredging Sludge for Preparing Engineering Soil Technology:The Typical Example of Dredging Project of Moat from Xiangyang City

作　　者：黄文海 闵红平 李岚峰 江东 陈安明 彭冠平 何媛 张文 刘智 Huang Wenhai;Min Hongping;Li Lanfeng;Jiang Dong;Chen Anming;Peng Guanping;He Yuan;Zhang Wen;Liu Zhi(China Construction Third Bureau Green Industry Investment Co.,Ltd.,Wuhan 430056;China Construction Third Bureau Water Environmental Design Institute,Wuhan 430014;Foshan Shuimu Jingu Environmental Technology Co.,Ltd.,Foshan 528200,China)

机构地区：[1]中建三局绿色产业投资有限公司,湖北武汉430056 [2]中建三局水务环保设计院,湖北武汉430014 [3]佛山水木金谷环境科技有限公司,广东佛山528200

出　　处：《广东化工》2021年第4期100-104,共5页Guangdong Chemical Industry

基　　金：中建三局重点研发计划(CSCEC-LT2019-16)。

摘　　要：以襄阳市护城河清淤工程为例,开展疏浚淤泥资源化处置制工程土方材料技术研究。淤泥破碎分散后掺入不同掺量固废掺料和水泥固化材料制成不同配方工程土,通过颗粒级配和稠度界限分析可将工程土划分为低液限黏土类。工程土14天养护龄期的无侧限抗压强度可达到528.2~642.5 Kpa,加州承载比(CBR)可达到高速公路或一级公路填土要求,固废掺料的加入不会破坏工程土的土力学性能,但会增加工程土颗粒粒径。现场规模碾压试验表明资源化工程土可达到填方材料压实度不小于93.0%的标准,并保持稳定。本研究具备优良的技术经济可行性,可为疏浚淤泥资源化处置制填方材料的大规模工程应用提供科学依据。Taking the comprehensive improvement project of Xiangyang moat as an example,the research on the technology of making earthwork materials by recycling disposal of dredged silt was carried out.The river dredging sludge was mixed with different amounts of stone powder and curing materials after broken and dispersed to make different formulations of engineering soil.The engineering soil was divided into low-liquid-limit clays through particle gradation and consistency boundary analysis.The unconfined compressive strength of engineering soil during the 14-days maintenance period could up to 528.2~642.5 Kpa,and the California load bearing ratio(CBR)could meet the filling requirements of highways and first-class highways.The field scale rolling test showed that the resource engineering soil could reach the standard of over 93.0%of the filling material compaction and remain stable.This research aims to provide a scientific basis for the engineering application of large-scale dredging sludge resource utilization to prepare fill materials.

关 键 词：疏浚淤泥 资源化利用 工程土 土力学性质 现场试验 

分 类 号：X705[环境科学与工程—环境工程]