水资源与水工程学报2023，Vol.34Issue(6)：139-146,8.DOI:10.11705/j.issn.1672-643X.2023.06.17
新疆伊犁湿陷性黄土输水渠道湿陷变形特性及影响因素分析
Collapse deformation characteristics and influencing factors of water conveyance channel in Yili collapsible loess,Xinjiang
摘要
Abstract
To solve the collapsibility problem of water conveyance channel construction in the loess area of Xinjiang,the loess area in Yili,Xinjiang where a water conveyance project is located was taken as the research object for the indoor physical property test.The transverse and longitudinal soil samples along the channel were collected for the analysis of the collapsibility characteristics,variation rules and collaps-ibility influencing factors of loess.The research results show that the collapsibility of the left embankment along the transverse section of the water conveyance channel is stronger than that of the right embank-ment,and the left embankment still has a slight collapsibility up to 13 m below the surface.Moreover,the loess collapsibility along the longitudinal section is mainly manifested as a gradual weakening of the collapsibility from east to west,with the pile No.75 +000 as the boundary.Among the influencing fac-tors,pore ratio is positively correlated with the collapsibility,whereas water content,liquid index and plastic index are negatively correlated with it.So the physical properties such as water content,pore ratio liquid index and plastic index can have a certain impact on the collapsibility of loess.The research results can provide some reference for the construction of water conveyance projects such as channels in collapsi-ble loess areas.关键词
湿陷性黄土/湿陷变形特性/湿陷系数/输水渠道/新疆伊犁地区Key words
collapsible loess/collapse deformation characteristics/collapse coefficient/water convey-ance channel/Yili prefecture of Xinjiang分类
建筑与水利引用本文复制引用
邓洪力,姜海波,侍克斌,赵海姣..新疆伊犁湿陷性黄土输水渠道湿陷变形特性及影响因素分析[J].水资源与水工程学报,2023,34(6):139-146,8.基金项目
国家自然科学基金项目(51769031) （51769031）
兵团区域创新引导计划项目(青年科技骨干人才培养计划)(2021BB004) （青年科技骨干人才培养计划）
