山东农业大学学报（自然科学版）2024，Vol.55Issue(5)：702-710,9.DOI:10.3969/j.issn.1000-2324.2024.05.008
排水泄压逆止阀性能测试及其对衬砌渠道抗浮稳定性影响研究
Study on Performance Test of Drainage Pressure Relief Check Valve and Its Influence on Anti-Floating Stability of Lining Channel
摘要
Abstract
As important water transmission and distribution buildings,channels play an important role in irrigation,navigation,power generation and water supply.Channel design based on the hydraulics of the reasonable slope requirements and by the selection of the conditions of the constraints,part of the channel needs to go through the higher terrain,the elevation of the channel floor is lower than the natural ground,due to atmospheric rainfall and other reasons the groundwater level is often higher than the channel floor,groundwater pressure will be lined channel floor caused by the top of the support damage,this causes leakage in the channel.channel leakage is a common disease,there are a number of measures to address the disease,but the measures used by the equipment generally have a short life,operation and maintenance inconvenience and other problems.To address this problem,the team developed A,B two types of new drainage relief check valve,and its drainage and anti-silt blocking performance test,and at the same time on the installation and non-installation of check valve lined channel anti-floating stability numerical simulation,the results show that:A,B two kinds of valves can be applied to the actual project,but for anti-silt blocking requirements of high channels,should choose a larger overwater area of the B-type valves;under the head difference of 0.5 m,1.0 m,1.5 m and 2.0 m,the pore water pressure of the channel equipped with the check valve decreased by 92.2%,32.1%,27.7%and 23.7%,respectively,compared with that of the channel without check valve,which indicates that the new type of check valve has obvious effect on the drainage of lined channel to drain off the pressure,and it can play an effective role in the protection of the lined channel.关键词
输水渠道/逆止阀/浮托破坏/渗漏/排水泄压Key words
Aqueduct/check valve/damaged by flotation/water seepage/drain分类
建筑与水利引用本文复制引用
高天阳,李俊志,刘仲秋,杨金格,刘经强..排水泄压逆止阀性能测试及其对衬砌渠道抗浮稳定性影响研究[J].山东农业大学学报（自然科学版）,2024,55(5):702-710,9.基金项目
山东省重点研发计划(2023CXGC010703) （2023CXGC010703）
