| 1. | One - dimensional constitutive model of unsaturated soil considering change of matric suction
考虑基质吸力变化时非饱和土的一维本构模型 |
| 2. | All tests are done in gds triaxial testing system . in triaxial shear tests , pore air pressure and pore water pressure are measured separately and matric suction is calculated
在三轴剪切试验中利用轴平移技术分别量测土样孔隙气压力和孔隙水压力，得到土样基质吸力。 |
| 3. | In the south : , the rainfall is one of the main influence factors of the stability of slope by the highway . the stability checking computations in slight saturate slope does n ' t consider the influence of the
在非饱和土坡稳定性验算中，由一于非饱和土体中基质吸力对边坡稳定性有利，故不考虑孔隙水压力的影响。 |
| 4. | Due to the contribution of matrix suction to the shear strength of rock mass and the harmful function of temporary additional water load are considered , the checking computation result of the above mentioned method conforms to reality better than those of the previous methods
该程序考虑了非饱和带基质吸力对岩体抗剪强度的贡献以及暂态附加水荷载的不利作用（若具备含水量与岩体强度指标之间的关系，还能考虑水对岩体的软化作用） ，使计算结果更贴近实际。 |
| 5. | Numerical models were used to study how the infiltration into a slope varies with the rainfall intensity , rain fall duration , soil properties and how the infiltration influences the stability of a slope . a numerical program is coded to solve the transient seepage field by using the finite element and finite difference methods based on the saturated - unsatured soil seepage theory . a model for considering the variations of soil weight and shear strength is created / constructed and the corresponding program is coded
本文针对受降雨影响显著的非饱和残积土土坡，运用饱和?非饱和土壤水分运动的理论和二维非稳态渗流有限元模型，模拟雨水入渗引起的暂态渗流场，将计算所得到的暂态孔隙水压力分布用于考虑了基质吸力影响的土坡稳定安全系数的计算当中，建立了考虑非饱和土土坡从雨水入渗到出现滑坡危险全过程的计算模型。 |
| 6. | Based on the knowledge of characteristic of unsaturated soils . the law of suction change with moisture content and density is got from suction experiment , which revealed that the matrix suction changes obviously with density especially in low moisture content , and with the same moisture content , if the density is gradually added , the value of matrix suction first is lowed , then added and finally lowed , this phenomenon is probed into in this paper
基于对非饱和土特性的认识，进行了基质吸力的试验研究，得到了基质吸力随含水量和密度的变化规律，试验揭示出：基质吸力随密度的变化是明显的，含水量越低，这一趋势越明显，在含水量相同的情况下，当砂土从疏松状态逐级变密时，吸力值经历变小、变大、又变小的过程，文中对造成这一现象的原因作了初步分析。 |
| 7. | The field of water distribution is obtained by finite difference method , then it is transformed into weight field and strength field or the field of suction distribution . the safety factor of slope during the infiltration time is calculated by slice method according to the actual weigh field and strength field
在有限差分法求得土坡水分分布的基础上，提出了用条分法计算土坡在降雨入渗各个时刻安全系数的思路：把水分分布场转化为边坡的基质吸力分布场(强度场)和重量场，用边坡的实际重量场和强度场来进行安全系数的计算。 |
| 8. | Firstly , the author has researches on basic engineering properties of soil layers in tunneling construction , especially in the relationship between the changes of matric suction ( negative pore water pressure ) and soil strength data . the results have obviously shown on the control of soil strength to matric suction in the different suction
首先对地铁隧道施工中环境土层基本工程性质进行了研究，着重研究了基质吸力(负孔隙水压力)的变化和土的强度参数的关系，研究结果表明：在不同的吸力状态下，土的强度都不同，土的强度明显地受吸力控制。 |
| 9. | According to unsaturated soil strength theory presented by fredlund , we have taken lead in establishing a formula of soil strength in beijing area ' s layers taking into consideration matric suction and the relationship between water content and matric suction . the change of water content is also a kind of disturbance from board angles
在国内，针对北京地区粉质砂土，根据fredlund提出的非饱和土强度理论，率先建立了考虑基质吸力影响的土的强度公式；吸力与含水量密切相关，从广义扰动角度来说，含水量的变化也是对土的扰动。 |
