西北工程技术学报2024，Vol.23Issue(3)：235-242,8.
考虑外包滤料影响的暗管排水工程设计与计算
Design and Calculation of Subsurface Drainage Engineering Considering the Impact of Filter Materials
摘要
Abstract
This study addresses the actual situation where the impact of filter materials is often ignored in the Yinbei irrigation district of Ningxia as a background,the hydraulic parameters of the subsurface drain considering the filter materials were calculated based on the concept of"effective radius"proposed by Widmoser.The results of the drainage pipe spacing calculations were compared and analyzed between those considering filter materials and those not considering them.Physical model tests of seepage and numerical simulations were used for validation and analysis.On this basis,a grey relational analysis method was employed to establish the grey relational coefficients between the design parameters of the subsurface drainage engineering and the drainage flow rate.The results indicate that in the transient seepage calculations for the engineering case,the spacing of subsurface drains considering the filter materials differs from that not considering them by 27.239%.The grey correlation degrees between filter material thickness,drain spacing,and drainage flow rate are 0.741 and 0.739,respectively,with a more significant correlation between filter material thickness and drainage flow rate.In the context of reclaimed water reuse,it is recommended that the influence of filter materials be included in the hydraulic calculations for subsurface drainage projects using composite filter materials.关键词
暗管工程设计/外包滤料/有效半径/HYDRUS-2D/灰色关联度Key words
subsurface drainage engineering design/filter materials/effective radius/HYDRUS-2D/grey correlation degree分类
农业工程引用本文复制引用
金铭锐,王红雨,唐少容,郭丽平..考虑外包滤料影响的暗管排水工程设计与计算[J].西北工程技术学报,2024,23(3):235-242,8.基金项目
宁夏自然科学基金重点项目(2021A0609) （2021A0609）
国家自然科学基金项目(41462010) （41462010）
宁夏自然科学基金项目(2021AACO3021) （2021AACO3021）
