季节冻土区防水卷材防渗渠道的特种衬砌方案研究  

Researches on the Special Scheme for Canal Liners with Rolled Waterproof Pad in Seasonal Frozen Regions

作　　者：宋玲[1] 余书超[1] 

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003

出　　处：《冰川冻土》2009年第1期124-129,共6页Journal of Glaciology and Geocryology

基　　金：石河子大学青年骨干教师项目(SJ01005);石河子大学工科振兴项目(GKZX2004-01)资助

摘　　要：季节冻土区的气候条件要求防渗渠道不仅具有良好的抗冲刷、防渗漏性能,而且还要求渠道能够不受渠基土的冻结膨胀影响以免发生渠道稳定破坏.文中提出一种新的既能很好地防渗又能防冻胀破坏的渠道衬砌方案,即在分析现行的防渗渠道存在的功能缺陷的基础上,以实现高防渗性能和输水安全为目标,以设置高性能柔性防水卷材整体防水层防渗漏为手段,再为防水层设置可靠的基层和保护层,来保证防水层的稳固、安全和耐久的设计理念.同时阐述了该方案的设计要点和施工要点,进行了经济评价,得出造价虽比现行防渗渠或双防渠略高,但全寿命期内的费用比其它的要低.Under the weather condition in arid-cold regions,canal with lining for protect seepage should have good properties able to defend from erosion,seepage and,especially,keep itself from damages coursed by frost heaving.In this paper,the defect of seepage protection layer of canal at present is analyzed,and a new structure scheme for canal liner,which could protect canal from not only seepage but also frost heaving,is put forward.In order to reach the aim of safe water delivery,the new structure scheme must hav...

关 键 词：防渗渠道 防渗漏 防冻胀 卷材防水层 基层 保护层 

分 类 号：P642.14[天文地球—工程地质学]