黄土的风成过程目前仍在进行。
同样各类黄土的化学成分亦相应稳定。
Chemical composition of each loess is also correspondingly steady.
分析和探讨了非饱和原状黄土的强度特性。
Strength characters of unsaturated and undisturbed loess were analysed and inquired.
被称为黄土的风成沉积物，在许多地区均有。
Wind - deposited sediment called loess occurs in many places.
采用压力板法测定了非饱和黄土的基质吸力。
The matrix suction of unsaturated loess was measured with the method of pressure board.
灰土垫层是处理湿陷性黄土的一种常用方法。
Lime-soil cushion is a common method to deal with collapsible loess.
通过单轴拉伸试验，研究原状黄土的拉伸特性。
The tensile character of undisturbed loess is analysed by monaxial tension tests.
根据黄土的湿陷机理，建立了湿陷性分析模型及数学模型。
The collapsibility analysis and mathematical models were established on the basis of the collapsibility mechanism of loess.
提出了非饱和黄土和饱和黄土的有效应力计算的简化公式。
Simplified formulas for the effective stress calculation of unsaturated loess unsaturated loess are proposed.
在大量动三轴试验的基础上，对压实黄土的动力特性进行研究。
Based on a lot of dynamic triaxial tests, some dynamic characteristics on roadbed compaction loess are studies.
并且，黄土的平均化学成分十分接近现在使用的地壳克拉克值。
Moreover, the average chemical compositions of las were very close to Clark values of crust, which are used at Present.
通过常规三轴试验研究了压实黄土的强度指标和应力—应变关系。
With the aid of triaxial compression test, the shearing strength and strain-stress relationship characters of compacted loess is discussed.
本论文以东斋堂砖厂剖面为主剖面，研究建立马兰黄土的年龄序列。
This paper aims to establish the age sequence of Malan Loess in the eastern Zhaitang brickyard section.
黄土的风化主要为植物群落根系的物理作用及其所引起的生物化学作用。
Weathering of loess soil is physical and biochemical processes mainly controlled by the root systems of plant community.
本文介绍了兰州大学最新研制的LD系列岩土胶结剂固化黄土的加固机理。
In this paper, the consolidation mechanism of LD serial rock-soil cemedin developed by Lanzhou University is introduced.
沙尘气溶胶相对地壳和黄土的富集因子，以亲硫元素和亲沉积层元素为最高。
The enrichment factor of sand aerosol which relate to crust and loess is the highest for absorbent sulphate and sedimental elements.
指出黄土的粒度成分、显微结构、含水率、击实功率是影响黄土压实的主要因素。
It is concluded that granulometric composition, microstructure, specific moisture content, compacting power efficiency are the main factors influencing loess compacting.
生活将一如既然的继续，如果有一个好天气的话，背靠黄土的农民将会有一个好收成。
Life will go on and, for farmers and those dependent on the land, the next crop should be a good one, if the weather holds.
得到了原状黄土的抗剪强度曲线、土-水特征曲线、压缩曲线及三轴应力应变曲线。
The shear strength curve and compressed curve and soil-water characteristic curve as well as triaxial stress-strain curve of intact loess were obtained.
因此，笔者认为，可以用黄土的平均化学成分来代表大陆上部地壳的平均化学组成。
Therefore, the average chemical compositions of loess may be used to represent average chemical constituents of continental upper crust.
由于湿陷性黄土的特性，湿陷性黄土地区给水排水管道设计越来越引起人们的关注。
Foundation treatment, water proof measures, design principle and characteristic of feed water and drainage pipeline in collapsible loess area were introduced.
结果表明黄土的显微结构对震陷系数有较大影响，并与震陷的临界动应力关系密切。
It indicate that the microstructure of loess has great influence not only to the seismic subsidence coefficient, but also to the critical dynamic stress.
由于黄土的特殊工程性质，黄土地区公路防排水与水毁防治的重要性显得尤为突出。
Because of the special engineering quality of loess, it is particularly outstanding that the prevention and drainage technology of highway in loess area.
因此，在已有基础上进一步深入探讨湿陷性黄土的强度软化特性具有特殊的重要意义。
Therefore, more concretely discussing the strength softening characteristic of collapsible loess on primary basis has specially important significance.
本文在模拟地震荷载作用条件下，对西安地区原状黄土的动力特性进行了较广泛的循环三轴试验。
On condition of simulated earthquake loading, a series of cyclic triaxial compression tests with undisturbed samples of loess from Xian for investigating the dynamic properties was carried out.
本文在模拟地震荷载作用条件下，对西安地区原状黄土的动力特性进行了较广泛的循环三轴试验。
On condition of simulated earthquake loading, a series of cyclic triaxial compression tests with undisturbed samples of loess from Xian for investigating the dynamic properties was carried out.
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