灌溉条件下未饱和黄土浸水湿陷性试验研究  

Test and Study on Wet Sinking of Unsaturated Loess under Irrigation Condition

作　　者：卢玉东[1] 张骏[2] 孙建中[2] 尹光志[1] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400044 [2]长安大学环境科学与工程学院,陕西西安710054

出　　处：《人民黄河》2007年第1期69-70,共2页Yellow River

基　　金：重庆大学骨干教师资助计划及博士后基金资助项目(2003-11)

摘　　要：针对输水管道工程通过黄土高原可能遇到的黄土湿陷性问题，在以往研究较少的已灌溉厚层黄土区进行黄土湿陷性试验，研究范围由以往的黄土厚度不大于20m的一、二级阶地扩展到黄土厚度更大的（50-60m）三级阶地。通过野外大型原位试验，对黄土的湿陷深度、剩余湿陷最进行分析研究，结果表明，黄土湿陷性的下界远不止10m，在厚层黄士分布区黄土具有多级湿陷性。It conducts wet sinking tests of loess in the loess region where had little study before in the light of wet loess sinking issue which might be met by a delivery pipeline project crossing through the Loess Plateau.The study scope of thickness of loess starts from terraces stage 1 and 2 that usually is less than 20 m to terrace 3 where the thickness is greater(50~60 m).It analyzes and studies the wet sinking depth and surplus volume of wet sinking of loess through large-scale in situ tests.The outcomes show that the lower bound of wet sinking loess is deeper than 10 m and has multi-level wet sinking in the thick loess region.

关 键 词：湿陷性黄土 浸水湿陷试验 湿陷深度 灌溉 陇西黄土高原 

分 类 号：S152[农业科学—土壤学]