大气作用下非饱和黄土边坡坡内温度变化规律的模型试验研究  

Experimental Study of Unsaturated Loess Slope Temperature Change under Atmospheric Influence

作　　者：尹荣玲 刘德仁[1] 魏娟[1] 张延杰[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《洛阳理工学院学报（自然科学版）》2016年第1期1-4,16,共5页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金项目(41402252)

摘　　要：通过室内模型试验,用农用式手动喷雾器喷水来模拟降雨,同时用保暖灯来模拟日照。在模型箱内不同位置布置温度和水分传感器,以寻求降雨和日照对不同位置黄土温度的影响,进而找到气候变化对黄土边坡的影响范围及影响规律。试验结果表明,边坡内部土体各点的温度对外界条件变化的响应表现为滞后性。In interior modeling tests, the agricultural manual sprayers and 275W heating lights are used to simulate rain fall and sunshine. Temperature and water sensors are installed in different positions of the model box to find out the influence of rainfall and sun- shine on loess temperature in different locations and furthermore the influence range and rules of climate changes on loess slope, which plays a significant role theoretically and practically in design and construction of unsaturated loess slope projects. Experiment results show that there is a lag response of the internal slope soil temperature at various points to external condition changes, which is getting hard to come up when reaching a certain range.

关 键 词：黄土边坡 温度 气候条件影响 模型试验 

分 类 号：TU473[建筑科学—结构工程]