渠道排水管的位置对减小渠道扬压力的影响  

The Influence of the Position of the Channel Drain Pipe on Reducing the Uplift Pressure of the Channel

作　　者：方攀博 王兵 陈思涵 韩延成[1] FANG Pan-bo;WANG Bing;CHEN Si-han;HAN Yan-cheng(Jinan University,Jinan 250022,Shandong Province,China;Laizhou Management Station,Shandong Provincial Water Transfer Project Operation and Maintenance Center,Laizhou 261400,Shandong Province,China)

机构地区：[1]济南大学,济南250022 [2]山东省调水工程运行维护中心山东莱州管理站,山东莱州261400

出　　处：《中国农村水利水电》2022年第2期199-205,共7页China Rural Water and Hydropower

基　　金：国家“十二五”科技支撑计划(2015BAB07B02-6);山东省自然科学基金(ZR2017LEE028);山东省重点研发计划(2016GSF117038)。

摘　　要：降低渠底和两侧地下水位对保证大型明渠边坡稳定和渠道安全具有重要意义。以山东省胶东引黄调水工程莱州段为研究对象,建立了二维水文地质模型及渠道边坡渗流模型,定量分析渠道两侧不同高度和不同水平距离的排水管降压效果;根据不同排水管位置下总水头和孔隙水压的变化规律,确定渠道排水降压的最佳位置。研究表明:渠底排水降压效果最佳位置是到渠道两侧水平距离0.1~0.125 m;排水管到渠道两侧边坡和渠底的距离越小,渠道两侧排水降压效果越好。另外对不同水流挟沙能力渠段的排水管位置进行研究,为不同渠段合理布置排水管,保证渠道排水降压效果最大化和渠道防扬压破坏提供依据。It is of great significance to reduce the underground water level at the bottom and both sides of the channel to ensure the stability of the slope and the safety of the large open channel. Taking the Laizhou section of the Yellow River Water Diversion Project in Jiaodong,Shandong Province as the research object,a two-dimensional hydro-geological model and a seepage model of the channel slope are established to quantitatively analyze the pressure relief effect of drainage pipes with different heights and horizontal distances on both sides of the channel.According to the variation law of total water head and pore water pressure at different drainage pipe positions,the optimal drainage and pressure reduction position is determined. The results show that the best location for the effect of drainage is 0.1~0.125 m from the side of the canal. In addition,the drainage pipe positions of different sedimentation carrying capacity channels are studied,which serves as a basis for the reasonable drainage pipe arrangement in different channels,maximizing drainage and depressurization effect and preventing uplift pressure damage of channels.

关 键 词：渗流模拟 排水管位置 排水降压 

分 类 号：TV67[水利工程—水利水电工程]