大风环境下沙漠腹地公路综合防护设施防沙性能研究

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (6): 133-138.

大风环境下沙漠腹地公路综合防护设施防沙性能研究

郑中元¹, 杜牧青^*2

1.连云港职业技术学院建筑工程学院, 江苏连云港 222000;
2.河海大学土木与交通学院, 江苏南京 210098

收稿日期:2022-08-24 发布日期:2025-12-31
通讯作者: 杜牧青(1986-),男,江苏连云港人,博士,副教授.Email:dumqhhu@hhu.edu.cn
基金资助:
国家自然科学基金(52078186),江苏高校“青蓝工程”资助(2025),2024年连云港市科技计划重点研发(社会发展)项目(SF2431)

Research on sand resistance performance of comprehensive protection facilitiesfor desert hinterland highways under strong wind environment

ZHENG Zhong-yuan¹, DU Mu-qing²

1. School of Architecture and Engineering, Lianyungang Technical College, Lianyungang 222000, China;
2. College of Civil Engineering and Transportation, Hohai University, Nanjing 210098, China

Received:2022-08-24 Published:2025-12-31

摘要/Abstract

摘要： 基于沙漠腹地现场测试,结合Fluent风沙两相流数值模拟针对大风环境下沙漠腹地综合防护的防沙性能开展研究.在沙漠腹地公路通过两台三维超声风速仪测量得到综合防护设施周围瞬时风速和风向,并为数值模拟边界提供风沙流初始风速.采用Fluent建立高立式沙障、草方格沙障和路基数值模型,基于欧拉双流体模型和多介质理论对综合防护设施以及路基周围风沙流的运动进行数值模拟.结果表明:在高立式沙障背风侧,风速快速降低至0~3 m/s,大颗粒沙粒主要沉积在高立式沙障迎风侧;草方格沙障对近地面风速进一步降低;草方格形成稳定的凹曲面产生回流,能保证大风环境下沙面自身不起沙,又能使气流中携带的沙粒在草方格凹槽周围堆积.

关键词: 风沙流, 沙漠腹地公路, 大风环境, 综合防护, 防风阻沙性能

Abstract: Based on field testing in the desert hinterland, combined with the numerical simulation of Fluent wind-sand two-phase flow, the sand resistance performances of comprehensive protection in the desert hinterland under strong wind environment are investigated. The transient wind speed and wind direction around the comprehensive protection facility are measured by two 3D ultrasonic anemometers on the highway in the desert hinterland, and the initial wind speed of the sand flow is provided for the numerical simulation boundary. Numerical models of a high vertical sand barrier, a grass grid sand barrier, and a roadbed are established by Fluent. Based on Euler two-fluid model and porous media theory, the sand movement around comprehensive protective facilities and subgrade is numerically simulated. The study found that on the leeward side of the high vertical sand barrier, the wind speed quickly decreases to the range of 0~3 m/s, and the large sand particles are mainly deposited on the windward side of the high vertical sand barrier. The wind speed near the ground by the grass-checkered sand barrier is further decreased. The grass square forms a stable concave surface to generate backflow, which can ensure that the sand surface does not sand itself in a strong wind environment, and can also make sand carried in the airflow accumulate around the groove of the grass square.

Key words: wind and sand flow, desert hinterland highway, strong wind environment, comprehensive protection, wind and sand resistance performance

中图分类号:

U419.91

郑中元, 杜牧青. 大风环境下沙漠腹地公路综合防护设施防沙性能研究[J]. 兰州理工大学学报, 2025, 51(6): 133-138.

ZHENG Zhong-yuan, DU Mu-qing. Research on sand resistance performance of comprehensive protection facilitiesfor desert hinterland highways under strong wind environment[J]. Journal of Lanzhou University of Technology, 2025, 51(6): 133-138.

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