人民黄河2025，Vol.47Issue(4)：127-132,6.DOI:10.3969/j.issn.1000-1379.2025.04.020
湿陷性黄土区渠道防渗体不均匀沉陷破坏治理技术研究
Research on the Treatment of Collapse and Destruction of Wetted Loess Channels in Guhai Uplift
摘要
Abstract
In order to solve the issue of uneven subsidence of the channel,serious subsidence and slide of the concrete lining plate in the col-lapsible loess area,the reasons for subsidence of the No.10 main canal in Guhai extention irrigation in Ningxia were analyzed,and the foun-dation soil of the channel was ramped,and the bearing capacity of the foundation soil was increased.The channel subsidence is treated by arc bottom trapezoidal concrete section,composite geomembrae and benzene plate.The results show that the density of the channel reaches more than 1.78 g/cm3,the pore ratio of the base soil is greatly reduced,and the density is increased.The cast-in place arc bottom trapezoid sec-tion has good structural loading condition and uniform adjustment of frost heave force and uneven subsidence.The analysis of the effect after the reconstruction and treatment of the channel shows that the water content of the foundation soil,the frost heaving amount and the settlement amount of the concrete slab has been effectively controlled.Through the comprehensive treatment of collapsible channels,the theoretical de-sign and methods for the treatment of collapsible channels and the collapse of concrete slabs are improved.关键词
湿陷性黄土/渠道/沉陷破坏/混凝土板滑塌/预防措施Key words
collapsible loess/channels/subsidence failure/the concrete slab collapsed/preventive measure分类
建筑与水利引用本文复制引用
王绪存,张海军,李建国,许军,高阳,党泽川..湿陷性黄土区渠道防渗体不均匀沉陷破坏治理技术研究[J].人民黄河,2025,47(4):127-132,6.基金项目
宁夏水利科技项目(宁水科信发[2019]5号) （宁水科信发[2019]5号）
