Concrete-plate fences have been widely adopted for windblown sand control and mitigation along railways. However, the inclination angles of inserting the concrete plate with respect to the vertical direction, i.e., straight or obliquely inserted concrete plates (SIP or OIP), significantly influence the efficiency of sand-control. This study performs a comparative evaluation of the SIP and OIP sand-control fences using wind tunnel testing and field monitoring data collected from the Lanzhou–Wulumuqi High-Speed Railway Project. The results show that the fence’s ability to reduce the wind speed and the sand-retaining efficiency gradually weakens with the increasing wind speed. Compared with the SIP fence, the OIP fence has a better wind speed reduction capability, stronger ability to capture fine particles below the top of the fence; it is more efficient for sand-retaining and induces stronger eddy intensity. Generally, the wind tunnel test and field monitoring results are consistent, whereas wind tunnel tests incline to overestimate wind speed reduction and sand-control efficiency. The study also finds that the aeolian sand accumulated around the fence can weaken the protection efficiency, and hence cleaning the aeolian sand accumulated around the fence should be done periodically to ensure the designed functions.

混凝土板栅栏已被广泛用于防风沙和铁路沿线的缓解。但是，插入混凝土板相对于垂直方向的倾斜角度（即直的或倾斜的混凝土板（SIP或OIP））会显着影响防砂效率。本研究使用从兰州至乌鲁木齐高速铁路项目收集的风洞测试和现场监测数据对SIP和OIP防沙围墙进行了比较评估。结果表明，随着风速的增加，围栏降低风速的能力和挡沙效率逐渐减弱。与SIP围栏相比，OIP围栏具有更好的风速降低能力，更强的能力来捕获围栏顶部以下的细小颗粒；它对于挡沙更有效，并产生更强的涡流强度。通常，风洞测试和现场监测结果是一致的，而风洞测试则倾向于高估风速降低和防砂效率。研究还发现，围栏周围积聚的风沙会削弱防护效果，因此应定期清理围栏周围积聚的风沙，以确保设计功能。