青藏铁路察尔汗盐湖盐岩和盐溶工程地质特性及路基修筑技术  

CHARACTERISTICS OF SALT ROCK AND SALT-DISSOLUTION ENGINEERING GEOLOGY AND SUBGRADE CONSTRUCTION IN CHAERHAN SALT LAKE ALONG QINGHAI-TIBET RAILWAY

作　　者：杨海容 蒋富强 王翔 张俊德 

机构地区：[1]中铁西北科学研究院,甘肃兰州730000

出　　处：《铁道工程学报》2005年第z1期373-378,共6页Journal of Railway Engineering Society

摘　　要：为解决铁路通过青藏铁路察尔汉盐湖段的盐溶技术难题,铁道部组织了专门的科研队伍进行大量的试验研究,本文根据研究成果,系统地介绍了察尔汉盐湖的自然和地质条件、盐岩的物理及化学性质、盐溶类别及铁路沿线的分布特征、盐溶发生发展的规律等。根据上述研究成果,成功地采用盐岩作非盐溶路段的路基填料,以及基底换填、路基自流排水处理盐溶发育地段的路基,并通过声波检测、水位观测和沉降观测资料分析,表明所采取的工程措是有效的。In order to solve the problem of salt—dissolution in the section of Chaerhan salt lake along Qinghai —Tibet railway,a number of studies are carried out by the special research team organized by the Ministry of Railways.This paper introduces systematically the natural and geological conditions,physical and chemical properties of salt rock,salt—dissolution type and its distribution characteristics along railways,and princi- ples of salt—dissolution developing.It is successfully to adopts the salt—rock as the subgrade fills for non— salt—dissolution section and adopts the base replace—filling and subgrade free—drainage for treating salt— dissolution rich section on the bases of the above research achievements.The result shows that the adopted engineering measures are effective by the sonic testing and analysis of the observation data of water level and settlement.

关 键 词：青藏铁路 察尔汉盐湖 晶间卤水 低矿度承压水 盐岩 盐溶 路基自流排水 

分 类 号：P642[天文地球—工程地质学]