750kV输电线路工程沿线宁夏黄土的特性分析  

Loess Property Along the Line of 750 kV Power Transmission Project in Ningxia Region

作　　者：李学丰[1] 马良荣 孔亮[3] 沈琚 

机构地区：[1]同济大学地下建筑与工程系,上海市200092 [2]宁夏电力设计院,银川市750001 [3]青岛理工大学理学院,山东省青岛市266000 [4]西南电力设计院,成都市610017

出　　处：《电力建设》2010年第5期7-12,共6页Electric Power Construction

基　　金：国家自然科学基金项目(50979037);教育部新世纪优秀人才计划支持计划项目(NCET-05-0895)

摘　　要：基于750kV兰州东—银川东输电线路工程的工程勘察,考虑宁夏地区湿陷性黄土的区域分布特点,分段对输电线路沿线宁夏境内90km湿陷性黄土的主要物理特性与湿陷性进行对比分析和总结,评价了沿线黄土的湿陷等级及界限,同时对沿线地下水及黄土的化学矿物进行分析。分析结果表明:该地区黄土的湿陷性与分布区域、埋深、颗粒组成、天然孔隙比、干容重等物理性质和黄土的化学矿物组成存在必然的联系。试验结果可以为该工程的设计施工提供依据,也为今后该地区施工建设提供参考数据。Based on the geological investigation, a comparison analysis is made of the loess along the 90 km-long 750 kV Transmission lines from eastern Lanzhou in Gansu Province to eastern Yinchuan in Ningxia Province, in terms of physical properties, collapsibility, the chemical and mineralogical compositions. The collapsible class and limit of the loess and the ground water along the line were also determined. The analytical results indicate that the collapsibility of loess is closely related to its location, depth, grain composition, natural void ratio, dry unit weight, and chemical and mineralogical compositions. The test results can be used not only as a basis for design and construction of this project, but also as a reference for other project in this area.

关 键 词：750 KV输电线路 黄土 物理性质 化学性质:黄土的 湿陷性 工程勘察 

分 类 号：TU921[建筑科学—建筑设计及理论]