土体

Anisotropism of the penetrability of dam and foundation material arouses that the density of the equipotential line of water head at entrance enlarges, residual water head are higher than the height of the soakage-line in large seepage field, and the exit points of seepage flow rises.

本文在总结前人研究成果的基础上，主要研究和探讨了以下四个方面的内容：饱和非—饱和、稳定—非稳定渗流计算的有限元分析；堤防渗控措施的比较和优化；土体湿化以及湿化变形的计算；土体渗流场和应力场的耦合计算问题。

On the basis of cavity expansion theory, the formulae of excess pore water pressure has been proposed, and the stress and strain of soil had been analyzed.

根据半无限土体中小孔扩张问题的解，分析了在超孔隙水压作用的瞬时，土体中的应力、变形等，并提出了经验公式。

All the work done is as follows:Firstly, given the impact of the soil gravidity stress on the scale of the vertical drain disturbance, Vesic's column cavity expansion theorem is mended. Then the radius of the plastic zone, the ultimate crowding stress and the soil displacement in the intersection of plastic and elastic areas are deduced when Mohr-Coulomb surrender criterion is adopted. The result of which caters better to the real situation.

本文针对竖井地基的施工扰动效应及固结可靠性做了如下一些工作：首先，考虑土体自重应力对竖井扰动范围的影响，对Vesic圆柱形孔扩张弹塑性理论解进行了修正，采用Mohr-Coulomb屈服准则，得到了弹塑性交界处土体位移、塑性区半径以及最终挤土应力等理论计算公式，修正以后的结果能更好地符合竖井施工的实际情况。

With the reference of characteristic and requirements of soil static pre-loading,the groundsill was statically preloaded after- raft foundation work.

通过借鉴土体预压法的特点和要求对筏板基础施工后的地基进行静载荷预压，在确保筏板基础安全稳定的同时，固化了土体，有效地消除了地基基础在上部荷载作用下的过大变形，其工程经验具有一定的参考价值。

Using laboratory experiment to adjust discharge runoff upstream, water content in earth, the slope and the grain size composition, to simulate havior of debris flow from landslide, in order to realize initial process of debris flow along gravel slope.

利用室内试验，调整后方迳流量、土体含水量、坡度与粒径组成等条件，模拟边坡土体崩塌产生坡面流动的过程，以期对砾石坡面引发土石流有更深一层的暸解。

K. H. Roscoe and his fellows of Cambridge University established the first elastoplastic model of soils which is based on classical plastic theory in 1963. However, due to the complexity of soils, the models that based on the classical metal constitutive theory or its modification accounting on the nature of soils have still much limitation when used to express the soil mechanical behavior. For example, the Duncan-Chang's model based on the generalized Hooke's law can not express the dilatancy of the soils. The uniqueness assumption of the direction of the incremental plastic strain in the classical plastic constitutive theory is not in agreement with some soil experiments.

但由于土的复杂性，目前以传统的本构理论为基础考虑土的一些特性而建立的模型在反映土体的力学特性上还存在很大的局限性，如建立于广义虎克定律基础上的Duncan—Chang模型不能反映土的剪胀性，传统的塑性本构理论中认为塑性应变增量方向具有唯一性的假设与一些土体的试验结果不符合。

Considering the input and output data in practical engineering is very large, one graphical user interface program for complicated soil limit analysis using KEM is developed for the first time.

考虑到实际工程中KEM复杂土体分析计算程序要求的输入输出数据量很大，本文首次编制了基于图形用户界面的复杂土体极限分析KEM人机交互处理程序。

Orienting directed from the theory of "interbed" put forward by Leake, based on the Terzaghi\'s effective stress principle, the principle of coupling groundwater flow equation and soil deformation equation is analyzed in this paper. And the land subsidence model coupled by three dimensional groundwater flow model and one dimensional soil deformation model was built.

本文从Leake提出的含水层内的"夹层"理论出发，在Terzaghi有效应力原理的基础上，分析了地下水流方程和土体变形方程耦合的机理，建立了由三维地下水流模型和垂向一维土体变形模型耦合得到的地面沉降模型。

Part I is soil dynamics including dynamic strength, deformation and pore pressure of soil, liquation of saturate sand, dynamic constitutive model of soil, dynamic response analysis of soil and dynamic stability analysis of soil.

包括土的动强度、动变形与动孔隙水压力，饱和砂土的振动液化，土的动力本构模型，土体的动力反应分析和土体动力稳定性的分析。

It is assumed that potential sliding surface of the soil in the back of the retaining wall is composed of logarithmic spiral arc and line.

假定挡土墙后土体潜在滑裂面由对数螺线滑动面和平面组合而成，根据挡土墙后土体薄层单元的平衡条件推导出粘性土层主动土压力的计算公式。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失