Sand deposition threatens the safe operation of railways. Experimental and numerical analysis of sand deposition on the track structure is conducted. A preventive method by removing part of ballast is proposed and studied. The result shows that as wind speed grows, the sand deposition on the track structure increases at the beginning and decreases later. When the wind speed is between 9 m/s and 20 m/s, the amount of sand deposition is largest. Thus, wind speed can be used as a reference for scheduling maintenance activities of track structure, e.g., sand cleaning. When the volume fraction of sand phase increases from 0.5% to 4%, the sand deposition increases initially and later decreases. By removing the ballast and allowing the wind-sand flow passing through the track structure, the sand deposition on the top of the track structure is reduced. When the ballast between sleepers was completely removed, the largest reduction in the sand deposition was achieved.

沙粒沉积会威胁铁路的安全运营。对轨道结构上的沙粒沉积进行了实验和数值分析。提出并研究了一种通过去除部分镇流器的预防方法。结果表明，随着风速的增加，轨道结构上的沙粒沉积开始时增加，而后逐渐减少。当风速在9 m / s和20 m / s之间时，沙的沉积量最大。因此，风速可用作调度轨道结构的维护活动（例如，清理沙尘）的参考。当砂相的体积分数从0.5％增加到4％时，砂沉积开始时增加，随后减少。通过移除压载物并允许风沙流通过履带结构，减少了沉积在履带结构顶部的沙子。