新疆伊犁南岸干渠黄土渠段湿陷性分析

汪海涛; 刘晓丽; 王思敬

新疆伊犁南岸干渠黄土渠段湿陷性分析

1.
新疆水利水电勘测设计研究院乌鲁木齐 830000;
2.
清华大学水利水电工程系北京 100084;
3.
中国科学院地质与地球物理研究所北京 100029

详细信息

作者简介:
汪海涛,现从事水利水电工程地质勘察研究工作.

中图分类号: P642.13
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出版历程
- 收稿日期: 2007-09-11
- 修回日期: 2007-12-09
- 刊出日期: 2008-04-29

COLLAPSIBILITY OF LOESS AT SOUTH BANK OF THE YILI TRUNK DITCH IN XINJIANG

1.
The Institute of Water Conservancy and Hydroelectricity of Xinjiang Province, Urumqi 830000;
2.
Hydraulics and Engineering Department, Tsinghua University, Beijing 100084;
3.
Institute of Geology and Geophysics| Chinese Academy of Science, Beijing 100029

摘要

摘要: 新疆伊犁南岸干渠工程明渠段沿线风积黄土广布,黄土的湿陷性对工程具重要影响。本文依据规范并考虑工程实际,对区内黄土的湿陷性等级、起始湿陷压力、湿陷性黄土厚度进行了综合分析,分析了挖方渠道黄土的湿陷性程度;并在考虑降雨土体非饱和过程的条件下,对填方渠道土地基的湿陷变形量进行了详细深入的研究。通过分析认为,工程区黄土渠段为非自重湿陷性场地,湿陷等级为Ⅰ～Ⅱ级;压实后的黄土不具湿陷性;无论是挖方渠道还是填方渠道,经过换填处理和设置排水措施后,即可消除湿陷性,无需要再做专门处理措施。
- 渠道 /
- 黄土 /
- 湿陷性 /
- 降雨入渗 /
- 非饱和 /
- 新疆
Abstract: There is a great area of loses along the Yili trunk ditch in Xinjiang province. The collapsibility of the losses with water has a great impact to construction in the region. On the basis of many tests, a detailed analysis about the grade, the initial pressure and the depth of loess collapaibilty, and the degree of loess collapaibilty along the ditch built by excavating is given in this paper. A deep analysis is also made to the collapaibilty along the ditch built by piling considering the unsaturation of loess. It reveals the grade of collapssility is Ⅰ～Ⅱ and belongs to the non-self-weight collapse loess in the field along the ditch and the loess would lose collapssility after being compacted. It is also found that the loess would lose its collapssility only by permutation and drainage. Other measures are not needed to remove the loess collapssility.
- Ditch /
- Loess /
- Collapsibility /
- Infiltration /
- Unsaturation /
- Xinjiang

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