The analyses on numerical simulation results reveal the characteristics of water - air - transmission and deformation in the unsaturated expansive soils slope during infiltration . according to numerical simulations , some suggestions are proposed for design and construction of expansive soils slope 通过对现场情况数值模拟结果的分析，揭示了非饱和裂隙膨胀土边坡降雨入渗的特点，并据此，对膨胀土边坡工程的设计和施工提出了建议。
By the test of anchor cable pull - out intensity , research is carried on anchor capability , stiffness coefficient and prestress losses of anchor cable in reinforcing similar soil slopes . the mechanisms of reinforcing similar soil slopes by prestressed anchor cable sash ( beam ) are studied by the method of combination of field test , theory analysis and numerical simulation , as a result , the calculational pattern of internal force of anchor cable sash ( beam ) is put forward 本文通过大量野外调查，提出类土质边坡的概念，并分析了它不同于一般粘性土边坡的特性；通过锚索抗拔试验研究了类土质边坡的锚固力大小、锚索刚度系数和锚索预应力损失情况；通过现场试验、理论分析和数值计算相结合的方法，研究预应力锚索框架(地梁)加固类土质边坡的机理，提出预应力锚索框架(地梁)的内力计算模式。
In this paper , research is emphasized on the situation of slope protection in shaanxi areas , analyses the engineering and economic effect of all kinds of slope protection , compare the traditional protection with the new , puts forward the protection principle that should be followed in shaanxi areas , study the destruction mechanism and stability analysis of high slope in ocher area , and puts forward effected and economic new protection methods 本文对陕西地区的边坡防护状况进行了研究，分析各种防护型式的防护效果及其经济效益，并结合国内外的防护新技术，对传统防护型式和新型防护型式进行了对比分析，提出陕西地区在以后的防护工程中应该遵循的原则，并研究了黄土高边坡的破坏机理和稳定性判断的方法，提出岩土边坡有效、经济的新型防护措施及其施工工艺。
" two chain " model for deformation and stability prediction of expansive soil slope is the framework for this research , in which it is considered that the reduction of strength of expansive soils during infiltration is mainly resulted on two aspects : 1 ) soils characteristics variation and 2 ) suction reduction while water content increasing 本文所进行的研究架构在膨胀土边坡变形与稳定预报的“双链”思想的基础上，认为降雨入渗过程中膨胀土边坡土体的强度折减主要来源于两个方面：一是降雨入渗时边坡土体中土的性状的变化；二是降雨入渗过程中由于土体含水量的增加变化导致边坡吸力降低。
Focused on the former in this paper , the fissures of expansive soils regarded as most important characteristics are analyzed through laboratory test , field observation and numerical simulation . scheduled experimental researches are carried out on quantificational description of fissures , healing of fissures during infiltration , seepage characteristics of fissures network and strength characteristics of fissured soil . based on tests results , numerical models for fissures network seepage and unsaturated fissured expansive soil consolidation are developed and applied to a finite element method analysis of an expansive soil slope during infiltration under different fissures states 本文着重研究前者，将膨胀土的裂隙性作为反映土体性状的主要方面，通过室内试验、现场观测以及数值模拟分析方法，对裂隙的观测手段与定量化描述、浸水愈合特征、裂隙网络渗流特性、裂隙土体强度特性等方面进行了全面系统的试验研究，在此基础上建立膨胀土边坡裂隙网络入渗的数学模型和非饱和裂隙膨胀土固结的数学模型，并应用数学模型对降雨入渗条件下不同裂隙发育状态时膨胀土边坡中水气运移、强度与变形特征进行了有限元数值分析。
The slope project is one of the three big problems of geotechnical engineering ; cut soil slope is one of the important types of slope projects ; engineering construction of the traffic , such as highway , railway in the mountain area and hills area etc . is developing rapidly , which will inevitably encounter the deformation and stability of cutting cliff debris and residual soil slopes 边坡工程是岩土工程三大问题之一；路堑式土边坡是边坡工程中的重要类型之一；迅速发展的山区和丘陵地区的公路、铁路等交通工程建设，必然会遭遇路堑式坡残积土边坡的变形与稳定性问题。
The unsaturated soil water movement formula is adopted for calculated the transient water content within the slope . with equilibrium method the stability of soil - nail bracing structure of unsaturated soil slope is analyzed considering the connection between the shear strength of unsaturated soil and water content . genetic algorithm is introduced for searching the minimum factor of safety of natural slope and soil - nail bracing in unsaturated soil 运用非饱和土水分子运动方程，求解降雨入渗条件下边坡土体的瞬态体积含水量，又考虑到其与非饱和土抗剪强度的关系，利用极限平衡理论推导了非饱和土边坡土钉支护整体稳定性最小安全系数f _ ( s , min )公式。
The related problems design of pile foundation of construction , in the filling soil field with slope on natural slope , were been analyzed . the theory formula were been put and successfully applied to the pile foundation conputation and design of the bank house in the new town . it may be used to design for pile foundation in similar field and foundation of construction 根据填土场地的实际情况，首先对山区斜坡上的镇土边坡边缘附近，建筑物桩基础设计计算的有关问题进行了分析，建立了相关的计算式，然后以某水电站库区移民新集镇信用社综合楼桩基础设计计算为例，阐述了其应用效果。
The landslide feature of the expansive soil is analyzed . the stability of the expansive soil slope is largely dependent on the weal link . the slope stability analysis of the expansive soil should consider the weathering , so all the analysis should be classified to two different types : weathered layer and non - weathered layer 对膨胀土路堑边坡滑坡特点进行了分析，指出膨胀土边坡主要受软弱结构面控制，提出了膨胀土边坡稳定分析应分为风化层和深层未风化层的方法，并建议了不同部位土的抗剪强度指标取值方法。
Bearing capacity and displacement are two main problems in the application of geotechnical engineering . based on a series of pull - out tests using three kinds of paper and a sort of window screening as geogrid , twenty - seven in limit and several in working - stress geogrid - reinforced slope model tests designed through orthogonal principle have been conducted to have obtained the relationship between the bearing capacity and four factors ( i . e . reinforcement , angle of reinforced slope , the designed - length of reinforcement and the distance between layers of reinforcement ) . the law of slope lateral ( horizontal ) displacement versus to the height of slope vary with external - load was derived from the model test data , and the main factor affecting the lateral and vertical displacement of geogrid - reinforced slope was obtained through analysis 承载力(强度)和变形是岩土工程应用领域的两大主要问题，本文以纸和窗纱布模拟加筋土边坡的土工格栅，在一系列拉拔试验的基础上，以正交设计理论分别安排27个极限应力状态和若干个工作应力状态加筋土边坡模型试验，并以模型试验获得的数据为依据，采用误差、极差及回归分析方法，探讨了加筋土边坡承载力与筋类、筋长、层间距、坡角4因素的相关关系，获得了在外荷载作用下加筋土边坡的侧向位移随坡高的变化规律(并进行了定性解释)和坡顶的竖向位移特性，并分析其主要控制因素。
