船闸闸室透水孔与减压管的排水效果分析  

Analysis on drainage effect of permeable hole and pressure relief pipe in lock chamber

作　　者：朱新望 何思远 许瑞东 杨尊伟 ZHU Xin-wang;HE Si-yuan;XU Rui-dong;YANG Zun-wei(College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;Faculty of Engineering,Western University, London ,Canada;Shanghai water conservancy engineering design and research institute co., Ltd., Shanghai 200061, China;Shandong Provincial Communications Planning and Design Institute CO., LTD., Jinan 250031, China)

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098 [2]西安大略大学工程学院,加拿大伦敦N6A3K7 [3]上海市水利工程设计研究院有限公司,上海200061 [4]山东省交通规划设计院有限公司,济南250031

出　　处：《水道港口》2020年第1期78-85,共8页Journal of Waterway and Harbor

基　　金：国家重点研发计划项目(2016YFC0402007);山东省交通运输科技项目(2017B79);通航建筑物建设技术交通行业重点实验室开放基金项目(YT918001)。

摘　　要：应用三维有限元建立了直接模拟闸室透水孔并带有减压管的分析模型,基于流量、水头差等效原则,根据等效渗透系数和阻力系数的概念,研究了透水孔直径、间距以及减压管深度对排水效果的影响规律。依托新夏港船闸分析结果表明,孔距越小、孔径越大,出口段、减压段的等效渗透系数越大、阻力系数越小。出口段等效渗透系数与出水孔面积率成正比,孔距、孔径对出口段排水效果影响等效,面积率不宜小于0.1%。减压管宜贯穿弱透水薄承压土层,其等效渗透系数与侧出水面积率成正比,孔距对减压管排水效果的影响大于孔径的影响。Three-dimensional finite element method was used to establish an analytical model for directly simulating the permeable hole of sluice chamber with decompression tube,based on the principle of equivalent flow and head difference,according to the concept of equivalent permeability coefficient and resistance coefficient,the influence of the diameter,spacing of permeable holes and the depth of pressure reducing pipe on the drainage effect was studied.According to the analysis results of Xinxia Port lock,the smaller the hole distance,the larger the hole diameter,the larger the equivalent permeability coefficient and the smaller the resistance coefficient of the outlet section and the decompression section.The effective permeability coefficient of outlet section is proportional to the area ratio of outlet hole,and the influence of hole distance and diameter on drainage effect of outlet section is equivalent.The area ratio should not be less than 0.1%.The weak permeable thin bearing soil layer should be penetrated by decompression tube,the equivalent permeability coefficient is directly proportional to the lateral outlet water area ratio,the effect of hole distance on drainage effect is greater than that of hole diameter.

关 键 词：船闸 透水闸室 排水减压 等效渗透系数 阻力系数 

分 类 号：U611[交通运输工程—船舶及航道工程]