三门峡地区湿陷性黄土结构体特性分析  

Characteristics Analysis of Collapsible Loess Structure in Sanmenxia Area

作　　者：李佳 曹芬[1,2] LI Jia;CAO Fen(School of Application engineering,Henan University of Science and Technology.,Sanmenxia 472000,China;Sanmenxia Polytechnic,Sanmenxia 472000,China)

机构地区：[1]河南科技大学应用工程学院,河南三门峡472000 [2]三门峡职业技术学院,河南三门峡472000

出　　处：《河南科技》2022年第15期107-110,共4页Henan Science and Technology

基　　金：河南省科技攻关计划项目(212102310276);三门峡市科技发展计划项目(2021003001)。

摘　　要：湿陷破坏是湿陷性黄土基本结构特性,为研究三门峡地区黄土的湿陷破坏特性,针对三门峡地区湿陷性黄土开展了相关增湿试验。研究选用双线法实施,试验荷载等级依次为25.0 kPa、50.0 kPa、100.0 kPa、200.0 kPa、300.0 kPa、400.0 kPa、800.0 kPa和1600.0 kPa,逐级加载,研究发现该地区的黄土土体结构强度与含水率的大小呈反向变化趋势,且其增湿变形与自身结构强度Pc以及外界压力P密切相关。Fagsible destruction is the basic structural characteristic of collapsible loess.In order to study the collapsible failure characteristics of loess in Sanmenxia,the humidification test is carried out for col⁃lapsible loess in Sanmenxia.The double-line method was adopted,and the test load grade was 25.0 kPa,50.0 kPa,100.0 kPa,200.0 kPa,300.0 kPa,400.0 kPa,800.0 kPa and 1600.0 kPa,loaded step by step.It is found that the strength of the loess structure in this area decreases with the increase of moisture con⁃tent,and its humidifying deformation is closely related to its own structural strength Pc and external pres⁃sure P.

关 键 词：湿陷破坏 湿陷性黄土 双线法 增湿变形 

分 类 号：P642.131[天文地球—工程地质学]