将淖铁路路堤风沙特征和高立式沙障防护效果研究  

Study on the Wind-Sand Characteristics of Embankment and the Protective Effect of High Vertical Sand Barrier in Jiangjunmiao-Naomaohu Railway

作　　者：周志广 张磊 李子政 刘世东 钟顺元 沈宇鹏[2] 张雪东 ZHOU Zhiguang;ZHANG Lei;LI Zizheng;LIU Shidong;ZHONG Shunyuan;SHEN Yupeng;ZHANG Xuedong(Rail Transit Branch of China Communications Construction Corporation Co.,Ltd.,Beijing 100088,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Railway Design and Research Institute of China Communications Construction Corporation Co.,Ltd.,Beijing 100088,China)

机构地区：[1]中国交通建设股份有限公司轨道交通分公司,北京100088 [2]北京交通大学土木建筑工程学院,北京100044 [3]中交铁道设计研究总院有限公司,北京100088

出　　处：《路基工程》2024年第6期1-8,共8页Subgrade Engineering

基　　金：甘肃省科技计划项目(22YF11GA302);中交集团2021年重点研发项目(2021-ZJKJ-18);中央高校基本科研业务费专项资金(2023-JBZY-026)。

摘　　要：基于Fluent欧拉双流体模型,结合沿线风沙特征,对将淖铁路单排高立式沙障和双排高立式沙障的防护效果进行模拟,分析不同工况下流场和积沙分布特征。结果表明:气流会在沙障周围出现分区,沙障迎风侧形成减速区,上方形成紊流区,背风侧形成涡旋低速区;单排沙障防护下,风速较低时随水平位置的变化呈“W”形分布,风速增大后呈“V”形分布,沙障的风速削减范围、影响高度随着入口风速的增大而增加;双排高立式沙障有更好的阻沙效果。Based on the Fluent Euler two-fluid model and in accordance with the characteristics of wind and sand along the line,the protective effects of single-row high vertical sand barriers and double-row high vertical sand barriers on Jiangjunmiao—Naomaohu Railway were simulated,and the distribution characteristics of flow field and sand accumu-lation under different working conditions were analyzed.The result shows that,the airflow will be divided around the sand barrier.The deceleration zone is formed at the windward side of the sand barrier,the turbulence zone is formed above the sand barrier,and the vortex low-speed zone is formed on the leeward side.Under the protection of single-row sand barrier,when the wind speed is low,it presents a'W'shape distribution with the change of horizontal position,and after the wind speed increases,it delivers a'V'shape distribution.The wind speed reduction range and influence height of sand barrier increase with the magnification of inlet wind speed.The double-row high vertical sand barrier has better sand blocking effect.

关 键 词：风沙区 铁路路堤 风沙特征 Fluent双流体模型 阻沙效果 积沙 

分 类 号：U418.56[交通运输工程—道路与铁道工程]