The cause of loess collapse is attributed to stress and water.
黄土湿陷的诱因是力和水。
Therefore, this article analyzes the reasons that generating loess collapse in tunnel excavation and how to prevent collapse in the construction is briefly discussed.
为此，本文分析了在黄土隧道开挖中产生坍塌的原因，对如何在施工中预防坍塌进行了简要的探讨。
If the tunnel in the loess gully towards or parallels to side with the loess Plateau, while cover is thin or bias, it easily occurs collapse or landslides.
假如隧道在较长范围内沿着黄土冲沟走向或者与黄土塬边平行走向，而覆盖层又较薄或偏压很大，就会轻易发生较大的坍塌或滑坡现象。
The harmful geology structure under the freeway is a ground problem existing in the freeway construction in the loess region, and it mainly results in the collapse of the roadbeds and the slopes.
黄土地区高速公路下伏不良地质体是高等级公路建设中经常遇到的地基问题，其病害类型主要是路基塌陷形成陷坑和路基边坡坍塌。
Common used measures in design of buildings in collapse loess area are mainly focused in three aspects: foundation treatment, waterproofing, and structure.
对湿陷性黄土区的建筑物，其设计措施通常可采取：地基处理措施、防水措施和结构措施三种。
Measures to overcome negative friction caused by the collapse of loess in pile foundation are recommended.
为了防止桩基因黄土地基湿陷而产生负摩擦力，介绍了克服桩基负摩擦力的措施。
Foundation treatment method, treatment thickness and residual collapse settlement of collapse loess with large thickness are hot issues in engineering design in loess areas.
大厚度自重湿陷性黄土的地基处理方法、处理深度以及合理控制剩余湿陷量等是黄土地区工程设计中的难点、热点问题。
The ground subsidence was due to collapse of loess soil caused by applying irrigation water.
地表沉陷是由灌溉水的充填引起黄土结构崩塌造成的。
Then the loess' collapse in the collapsed loess region in Gansu is evaluated by regions according to the coefficient measured actually of Loess' collapse in main region and its law of distribution.
根据甘肃省主要地区的实测黄土湿陷系数及其分布规律，进行了甘肃省湿陷性黄土的分类和区域评价；
Hence, as for as the result of its deformation is concerned, collapse loess upon wetting at a state of certain stress is equivalent to that with applied extra load.
因此，单就其变形的后果而言，湿陷性黄土在一定应力状态下的浸水增湿与对黄土施加附加力荷载有等效作用。
The influence of cement on strength and collapse of loss was simply studied in this paper, Loess-cement is endowed with theory of "water-harden" physical -chemical reaction.
本文简略地分析了水泥对黄土强度及湿陷灾害的影响，提出水泥黄土具有“水硬性”物理化学反应的理论。
This paper discusses the following essential problems on collapse of loess: (1) The main characteristics of collapsible deformation and test method of coltapse;
本文论述了有关黄土湿陷的几个重要问题：（1）湿陷变形的主要特点及其研究方法；
The bearing capacity and settlement of the foundation are tested and computed in a specific project. Those results showed feasibility of RCS pile for treatment of wet collapse loess foundation.
表明夯实水泥土桩处理湿陷性黄土地基的可行性，为类似工程提供了可借鉴的经验。
The test results might be useful to similar projects in the area of dead-weight collapse loess with heavy section and to revise "Code for building construction in collapsible loess regions".
试验成果可作为今后大厚度自重湿陷性黄土地区工程建设以及黄土规范进一步修订的参考。
It is found that some physical and chemical changes occur in the collapse process and the big pores in loess do not always contribute to collapsibility.
由试验可知，原状黄土在湿陷过程中发生了某些物理化学变化，大孔隙对黄土的湿陷没有必然的贡献。
The deformation modes of high slope in loess highway are mainly slope-surface-erosion and area feature peeling; collapse, slumping and slide could only be seen in some parts of the road section.
公路黄土高边坡的变形破坏形式主要为坡面冲蚀、面状剥落，仅在局部路段见有小型崩塌、滑塌和滑坡。
The treatment effects of collapse loess using heavy hamper and low fall and light hamper and high fall dynamic consolidation construction methods are made a comparison.
比较了重锤低落与轻锤高落强夯法处理湿陷性黄土地基的效果 ，从地质概况、设置要求、加固效果几方面进行了论述 ，指出强夯法具有一定的推广价值。
The treatment effects of collapse loess using heavy hamper and low fall and light hamper and high fall dynamic consolidation construction methods are made a comparison.
比较了重锤低落与轻锤高落强夯法处理湿陷性黄土地基的效果 ，从地质概况、设置要求、加固效果几方面进行了论述 ，指出强夯法具有一定的推广价值。
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