毛细透排水带排水性能试验研究  

Experimental study on drainage characteristic of capillary drainage belt

作　　者：董城[1,2] 崔玉桥 郭一鹏[1,3] 赵春彦 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]湖南省交通科学研究院,湖南长沙410075 [3]高速铁路建造技术国家工程实验室,湖南长沙410075

出　　处：《铁道科学与工程学报》2017年第10期2096-2103,共8页Journal of Railway Science and Engineering

基　　金：湖南省科技人才专项-湖湘青年英才计划项目(2016RS3037);中国铁路总公司重点项目(2015G006-F);中南大学研究生自主探索创新项目(2017zzts529;2016zzts080);国家自然科学基金资助项目(51678572;51408613)

摘　　要：探讨毛细透排水带的毛细力,开展室内砂土排水试验,分析砂土中设置毛细透排水带下的流速、含水量以及其防淤堵性能。研究结果表明,路基、边坡等构筑物上毛细透排水带铺设的角度取值范围建议为10°~15°,毛细透排水带加强了砂土的排水能力,在变水头非饱和阶段埋深对排水效果影响微弱,毛细透排水带能够促使其周边土体形成反滤层。该研究成果为毛细透排水带的实际工程应用提供了参考。In this paper, the capillary force of the drainage belt was discussed, and the laboratory experiment ofsand drainage was carried out. The flow velocity, soil moisture and the anti-clogging performance in thecondition of setting capillary drainage belt in sand were than analyzed. The results show that the range ofsuggested angle for capillary drainage belt is from 10° to 15° for slopes and other structures, and the beltstrengthens the drainage capacity of the sand. What’s more, buried depth only has a little influence on drainageeffect in unsaturated period under variable water head, and the inverted filter could be formed under the influenceof capillary drain belt. The research results provide practical value for the engineering application of capillarydrainage belt.

关 键 词：毛细透排水带 排水试验 倾角 埋深 防淤堵 

分 类 号：TU441.4[建筑科学—岩土工程]