| 宁夏南部黄土的特殊工程性质及防治综述 |
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| 引用本文： | 袁丽侠.宁夏南部黄土的特殊工程性质及防治综述[J].工程地质学报(英文版),2003,11(1):58-63. |
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| 作者姓名： | 袁丽侠 |
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| 作者单位： | 西北大学地质系,西安710069;宁夏大学,银川750021 |
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| 摘 要： | 黄土高原北部的宁南黄土以其强的Ⅱ-Ⅲ级自重湿陷性在我国黄土中占独特地位。究其原因:黄土内部的孔隙结构,粒度组成和胶结类型间的紧密联系,是引起黄土湿陷性强弱或湿陷敏感性高低的内因。影响场地土湿陷敏感性的外因如土层厚度、埋藏深度、水平垂直向渗透系数等又与土的孔隙度和结构类型有关,结构差异将导制湿陷敏感性的差异。黄土湿陷性及湿陷敏感性随深度的增加而递减,通过对该区黄土产生湿陷性机理进行的分析,提出相应的工程防治措施。
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| 关 键 词： | 宁夏 黄土 工程性质 湿陷性 机理 |
| 文章编号： | 1004-9665/2003/11(01)-0058-06 |
| 收稿时间： | 2002-08-31 |
| 修稿时间： | 2002年8月31日 |
SPECIFIC ENGINEERING PROPERTIES OF LOESS AND IT′S PREVENTION AND CONTROL IN SOURTH PART OF NINGXIA |
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| Institution: | Department of Geology, Northwest University, Xi′an 710069|Ningxia University, Yinchuan 750021 |
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| Abstract: | High collapsibility of loess appears in sorth part of Ningxia. The research result show that the loess collapsibility is causted by pore microstructre, and close relation between granula metrical composition and cement types. Other factors affecting loess collapsibility are soil thickness permeability coefficient, and occurence depth. Other properties of loess are also explained herein. We obtain the detail information of the soil formed in different processes and environments. From these result we suggest a collapsibility mechnism of loess. Finaly some Measures to prevent and control loess deformation are discussed . |
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| Keywords: | Ningxia Loess Engineering property Collapsibility Mechnism |
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