Laboratory model test on water and heat variation process of unsaturated loess slope

LIU De-ren; ZHANG Wen-qing; HUANG Xin-zhi; LI Cheng-cheng

doi:10.16285/j.rsm.2017.S2.033

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Laboratory model test on water and heat variation process of unsaturated loess slope

更新时间：2026-06-25

- Laboratory model test on water and heat variation process of unsaturated loess slope
- Vol. 38, Issue S2, Pages: 236-240(2017)
- 作者机构：
  
  1. 兰州交通大学土木工程学院,甘肃,兰州,730070
  2. 中铁第一勘察设计院集团有限公司,陕西,西安,710000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.S2.033
  CLC： TU444
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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LIU De-ren, ZHANG Wen-qing, HUANG Xin-zhi, et al. Laboratory model test on water and heat variation process of unsaturated loess slope[J]. 2017, 38(S2): 236-240.
DOI：

LIU De-ren, ZHANG Wen-qing, HUANG Xin-zhi, et al. Laboratory model test on water and heat variation process of unsaturated loess slope[J]. 2017, 38(S2): 236-240. DOI： 10.16285/j.rsm.2017.S2.033.

摘要

针对黄土边坡在降雨条件下易发生浅层滑塌失稳破坏问题，探讨降雨入渗及日照蒸发条件下非饱和黄土边坡内水热变化过程。利用填筑室内黄土边坡模型，通过控制降雨–日照循环条件，对黄土边坡模型中温度、水分及坡面位移进行监测，结果表明，非饱和黄土边坡模型在外界降雨–日照条件下其内部温度及含水率的影响范围在30～40 cm之间，其影响深度是有限的，说明通常在降雨入渗作用下黄土边坡失稳破坏的深度有限，多为浅层滑塌破坏；边坡模型的表面位移随着降雨日照条件变化而发生轻微膨胀或收缩。

Abstract

In light of the issues on frequent destruction derived from slump and shallow landslide of loess slope after rainfall

the study mainly focuses on revealing internal moisture-heat change process of unsaturated loess slope under rainfall infiltration and sunshine evaporation. This research employed a laboratory loess slope model

regulated the rainfall-insolation cycle

and monitored the temperature

moisture and surface displacement. The results show that the depth affected by internal temperature and water infiltration of unsaturated loess slope is limited; in the range of 30~40 cm

under conditions of rainfall and sunshine. These show that

generally

the destruction depth of loess slope with slump and instability is limited

which mostly is a shallow slump. With the change of rainfall and sunlight

the slope surface displacement in the model occur a slight deformation on expansion or contraction.

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