土流

The rule about water flow in unsaturated soil and the soil-water characteristic curve are described in this papsr, and it respectively regards moisture content and capillarity head as basic variable to deduce unsaturated seepage control equation.

本文阐述了非饱和土中的流动规律和土—水特征曲线的特征及其应用，分别以含水量和毛细水头为未知量推导了非饱和渗流的控制方程。

In this work,the processes for purifying the bentonite suspension with high concentrate by hydraulic cyclone and dewater ing,the obtained product by pressure filtration were investigated.

研究了膨润土采用水力旋流器在较高矿浆浓度下进行分级提纯和压滤脱水的工艺、获得的提纯膨润土产品蒙脱石含量高(达95%以上)。

Therefore it is necessary to research the mechanism of greensand used for high compacted molding methods thoroughly.This subject is one section of the National Natural Science Foundation subject ""Ivestigation on Predicting Method and Mechanism of Springback for High Compacted Sand Molds"", followed of the other completed one named ""Research on Microdeformation of Molding Sand"". A serious of experiments has been done on the reequipped three axial machine under certain technological conditions, and the mechanics, material science, rheologic science. It is systematically studied that the influences on the springback of sand mold were caused by the main influence factors: pressure, compacted rate and the content of soil. Through the analyzed experiments' data, the experienced stress-strain relationship concerning the main influence factors were obtained;under different technical parameter, the springback and spingback's potential energy are compared, the differences and indifferences between them are found out, and the springback's mechanism is discussed;according to the tests' data of YangGuoping coming from Tinghua University, experienced formula of molding sand's springback displacement is induced, the displacement and springback are compared, the margin of error's reasons are analyzed, and they are tested and verified mutually.

本课题为国家自然科学基金项目"高紧实度砂型预测方法及回弹机理的探讨"的一部分，是已结题的国家自然科学基金项目"铸造型砂微变形的研究"的后继，运用力学、材料学及流变学理论，利用改装的三轴仪，在一定的工艺条件下，作了大量系列实验，系统的研究了压实比压、紧实率和膨润土含量对砂型回弹的影响；对实验数据进行了分析和处理，得出了型砂关于压实比压、紧实率和膨润土含量的本构关系的经验公式；把各工艺参数下的型砂产生的回弹量与回弹势能进行比较，找出两者存在的异同点，并对回弹机理进行了探讨；通过清华大学杨国平的实验数据，推导出型砂回弹位移场的经验公式，并与实验测出的回弹量进行比较，分析误差造成的原因，并互相进行了验证。

The eluvial soils on slopes where surface flow occurs are mainly clayey soils with some blocks or debris. They have good grading distribution and a thin soil horizon.

发生坡面流的斜坡残坡积土主要为粘性土，含少量块石或碎石，级配较好，且土层厚度小。

RESULTS:Isoalantolactone exhibited excellent anti-proliferative activities on HeLa, SHIN3 and HOC-21 and HAC-2 cell lines, while 1-O-acetylbritannilactone and britannilactone demonstrated weak anti-proliferative activities on HeLa, SHIN3, HOAC-21 and HAC-2 cell lines even at the concentration of 100 μmol/L. The apoptotic rate in isoalantolactone group with the concentration of 12.5 μmol/L was higher than that in PBS group.

结果： 异土木香内酯对上述5种肿瘤细胞的增殖均有明显的抑制作用，1-氧-乙酰大花旋覆花内酯和大花旋覆花内酯即使在100 μmol/L的高浓度下，对5种妇科肿瘤细胞的增殖不显示抑制活性；流式细胞学检查发现异土木香内脂处理后的HeLa细胞出现凋亡现象。

Besides, the paper reveals the difference of mineral component between the fissured clay and the ambient soil by X-ray Diffraction test and discusses its effect to seepage in expansive soil.

此外，对合肥膨胀土中裂隙粘土的矿物进行X衍射分析，揭示了其与围土的区别并初步探讨了其存在对渗流的影响。

Based on the theory of two-phase fluids dynamics, the general governing equation is established, which is applied to the fields of seepage, consolidation and deposit. For the first time, the mechanics properties of the soil affected by seepage are studied by the means of experiment. The problems of the modified indexes of mechanics and constitutive relation are solved due to the formulations obtained of mechanics parameter under seepage condition. Applied fuzzy theory and modern project design method, the fuzzy probability model for stability analysis is stetted up; Considered variation of mechanics parameter and curtain effect, the deformation patterns of deep execution are systematically analyzed.

基于两相流理论，推导了适用于渗流、固结和沉积的统一形式的控制方程；试验研究了渗流作用下土的力学性质的变化规律，经综合分析得到力学指标的定量表达式，为工程设计和数值计算中力学参数的确定提供了参考；基于模糊理论和现代工程设计方法，建立了基坑失稳的模糊概率模型，为基坑稳定性预测提供了新的方法；对基坑变形规律作了系统分析，考虑了土性变化和帷幕防渗效果对支护结构变形的影响，得到了较满意的结果。

Considering the soil self-weight action,this paper analyzed the developing regularity of plastic zone of soft soil dam foundation by means of non-linear finite element method .

本文在考虑坝基土自重作用下，用非线性有限元法分析了堤坝软土地基的塑流区开展规律。

The procedure is not only used in the stable seepage field of earth rock-fill dam but also used in the stable seepage field of other dams such as concrete dam in order to provide the reference for solveing the seepage problem.

本文的研究成果不仅可以应用于计算土石坝的稳定渗流场，也可以应用到其它坝比如混凝土坝的稳定渗流场的分析，为解决渗流问题提供参考。

Is within the flow region, rivers rare, soil essential for the desert soil, and thick bone soil and saline soil; vegetation is extremely sparse shrubs, semi-shrubs, mainly, there are large tracts of land barren; land type is mainly mountainous and desert, erosion stone Gobi, alluvial gravel Gobi and mobile sand.

属内流区，河流稀少，土壤基本为荒漠土、粗骨土和盐土；植被以极其稀疏的灌木、半灌木为主，还有大片土地寸草不生；土地类型则主要为山地荒漠、剥蚀石质戈壁、洪积砾石戈壁以及流动沙地。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。