输电线路戈壁碎石土地基现场直剪试验  

Field Direct Shearing Tests of Gobi Gavel Soil in Northwest for 750 kV Transmission Line Engineering

作　　者：安维忠 李永祥 刘生奎 

机构地区：[1]甘肃省电力设计院,兰州市730050

出　　处：《电力建设》2010年第5期66-69,共4页Electric Power Construction

基　　金：国家电网公司科技项目(SGKJ[2008]1360)

摘　　要：针对西北750kV输电线路建设的甘肃河西走廊地区戈壁滩碎石土地基的特点,选择3个具有代表性试验场地进行了现场直剪试验。结果表明:戈壁滩碎石土具有粘聚力,3个试验场地碎石土的粘聚力分别为10.2kPa、23.0kPa和15.3kPa,内摩擦角分别为39.6°、43.4°与47.0°。试验结果可作为该地区输电线路掏挖原状土铁塔基础设计的依据。According to the geotechnical characteristics of Gobi gavel soils along the northwest 750 kV transmission lines,field direct shearing tests were carried out at three representative sites.The test results indicated that the cohesion values of Gobi gavel soil in three sites are 10.2 kPa,23.0 kPa and 15.3 kPa,respectively,while the angles of internal friction are 39.6°,43.4° and 47.0°.The testing results can be used in designing of the excavated foundations for the 750 kV transmission line project.

关 键 词：输电线路 掏挖基础 戈壁滩 碎石土 现场直剪试验 铁塔基础 

分 类 号：TM75[电气工程—电力系统及自动化]