高含黏(粉)粒土料充填管袋高效脱水技术  

Efficient dewatering technology of geotextile tubes filled with high clay(silt) particle-content soil

作　　者：吴海民[1] 束一鸣[1] 常广品[1] 刘云锋[1] 刘欣欣[1] 顾克[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水利水电科技进展》2018年第1期19-27,35,共10页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51179065);国家"十二五"科技支撑计划(2012BAB03B02);江苏省高校优势学科建设工程项目(PAPD)

摘　　要：针对我国河口海岸地区大量管袋坝工程因充填高含黏(粉)粒土料导致脱水固结速度慢而无法进行赶潮施工的问题,通过吊袋排水效率试验和充填泥浆沉淀规律试验研究初步提出了放水排泥的加速脱水方法;通过室内单元管袋脱水模型试验和现场大尺度充填试验对所提出加速脱水方法的可行性和实际工程效果进行了验证。在归纳系列室内试验结果和现场施工经验基础上总结出一种充排结合、边充边排的管袋充填高含黏(粉)粒土料高效脱水技术,并给出了具体施工工艺。The slow dewatering speed of geotextile tubes filled with high clay （ silt） particle-content soil generally cannot meet the requirement of the limited construction period in the coastal and estuarine areas of China. A preliminary method of actively discharging the surface muddy water in geotubes to improve the dewatering speed was proposed based on the hanging bag tests and settlement tests of filling slurry. The feasibility and actual results of the new dewatering method has been verified by both laboratory model tests and large-scale field model tests. Based on the test results and the field engineering experience, an efficient construction technology that can actively discharge muddy water with alternately filling and discharging techniques to accelerate dewatering speed of geotextile tubes filled with high clay （ silt） particle-content soil was generalized. The specific procedure and construction steps were also provided.

关 键 词：土工管袋 高含黏(粉)粒土料 脱水速度 模型试验 施工工艺 

分 类 号：TV641.2[水利工程—水利水电工程]