充填土袋排水特性试验研究  

Laboratory study on drainage behavior of soil-filled geotextile bag

作　　者：王年香[1] 顾行文[1] 朱群峰[1] 章为民[1] 任国峰[1] 

机构地区：[1]南京水利科学研究院,江苏南京210024

出　　处：《水运工程》2014年第10期156-160,共5页Port & Waterway Engineering

基　　金：国家自然科学基金项目(51179106);国家高技术研究发展计划863项目(2012AA112509);江苏省交通科学支撑计划项目(BE2011718)

摘　　要：针对连云港疏浚土,通过充填土袋排水试验,研究充填土黏粒含量和充填袋等效孔径对充填土袋排水特性的影响。试验结果表明,充填土袋的排水率和含水率随时间呈非线性变化:在初始阶段,最大排水速率高达数千%d的量级,且黏粒含量越小,最大排水速率越大;而后排水速率迅速减小,只有数十%d的量级,1 d后小于10%d。充填土的黏粒含量和布袋的等效孔径显著影响其排水特性,充填土袋筑堤,充填土的黏粒含量应小于20%为宜,充填袋的等效孔径0.15 mm左右为宜。Laboratory tests are carried out to study the influences of clay content and equivalent the drainage behavior of soil-filled geotextile bag in Lianyungang harbor. Results show that the drainag water content of soil-filled bag change nonlinearly with time. The drainage pore size on e effect and rate is up to thousands %/d at initial phase, and then decreases rapidly to dozens %/d, and becomes less than 10%/d after 1 day. The maximum drainage rate is greater with less clay content. The drainage behavior is greatly influenced by the clay content of filled soil and equivalent pore size of geotextile bag. For the construction of embankment with soil-filled geotextile bags in Lianyungang harbor, the clay content of filled soil shall be controlled under 20% and the equivalent pore size of geotextile bag shall be about 0. 15 mm.

关 键 词：充填土袋 黏粒含量 等效孔径 排水特性 试验研究 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程]