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为解决规划拟建的乌鲁木齐至尉犁高速公路建设对冰川环境的影响,文章采用风洞实验和数值模拟相结合的方法模拟了施工扬尘的影响范围,结果表明:粉尘的扩散范围与粉尘的粒径成反比,并且沉降速度随着粒径的增大而增大;粉尘浓度较大(>4mg/m~3)的区域一般分布在施工位置周围1000m的范围内,具体延伸方向与当地的地形和风向有直接关系,并且高度方向一般不超过300m。根据上述模拟结果,从预防和降低公路建设对冰川环境的影响角度,提出了乌鲁木齐至尉犁高速公路的选线要求及施工扬尘防治措施建议。
In order to solve the impact of planned construction of Urumqi-Wei-li highway on the glacier environment, the paper uses wind tunnel experiment and numerical simulation to simulate the influence range of construction dust. The results show that the range of dust diffusion and the particle size of dust And the sedimentation velocity increases with the increase of particle size. The area with larger dust concentration (> 4mg / m ~ 3) is generally distributed within 1000m around the construction site. The specific extension direction is in accordance with the local topography and Wind direction has a direct relationship, and the height of the general does not exceed 300m. Based on the above simulation results, from the perspective of preventing and reducing the impact of highway construction on the glacier environment, the line selection requirements and the prevention and control measures for construction dust in Urumqi-Weili highway are proposed.