Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions

HU Zhong-you; LUO Ya-sheng; LU Lu

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Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions

- Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions
- Bulletin of Soiland Water Conservation Vol. 27, Issue 2, Pages: 63-66(2008)
- 作者机构：
  
  西北农林科技大学水利与建筑工程学院, 陕西杨凌,712100
- 作者简介：
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- Published：2008
- 稿件说明：
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HU Zhong-you, LUO Ya-sheng, LU Lu. Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions[J]. Bulletin of Soiland Water Conservation, 2008, 27(2): 63-66.
DOI：

HU Zhong-you, LUO Ya-sheng, LU Lu. Loess Collapsibility and Structliral ClaaracteristiCS in Different Regions[J]. Bulletin of Soiland Water Conservation, 2008, 27(2): 63-66. DOI：

摘要

对甘肃省兰州市、陕西省杨凌区及河南省巩义市3个采样地黄土进行侧限压缩试验

分别求取了它们在不同含水率下的湿陷系数和结构性参数

较好地揭示了黄土湿陷和结构的变化特性。结果表明

从重塑黄土、原状饱和黄土压缩曲线的相对分布位置可以直观看出黄土的联结和排列特性对黄土结构性的贡献作用和影响;黄土结构参数在前期随含水率变化较大且无统一变化规律

但超过一定压力值之后

结构性参数与湿陷系数随含水率变化分布规律一致

即随含水率增大而减少;各个地方黄土分界点压力值随地域变化呈现出规律性变化;结构性参数在表示试验前期黄土结构变化方面要比湿陷系数灵敏有效。

Abstract

The coefficients of collapsibility and the structural parameters at different water contents are obtained to show the variation characteristics of collapsibility and loess structure through confined compression tests in 3 different loess areas of Lanzhou City of Gansu Province

Yangling District of Shaanxi Province

and Gongyi City of He'nan Province.The results illustrate that the contributions of coupling and arrangement characteristics to and their effects on structural characteristics of loess can be seen directly through the distribution of the confined compression curves.Loess structural parameters change greatly with water content at the early time of test

but loess structural parameters and the coefficients of collapsibility decrease with increased water content beyond a certain compressive stress.The value at the critical point change regularly with location.The structural parameter is much more sensitive and efficient than the collapsibility coefficient to show the early structural variation of loess.

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Related Institution

西北农林科技大学水利与建筑工程学院, 陕西杨凌

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