敖汉,地处内蒙古赤峰市东部,是季节性风沙地区。每年春季,大陆季风夹带着漫天飞舞的细砂,袭击着这里的村庄、丘陵和田地。公路也逃脱不了风沙的冲击。风沙不仅给公路养护工作带来极大困难,还严重地影响公路运输和行车安全。由于风沙的阻碍甚至导致中断交通,给人民生活和生产造成更多的不便和损失。 Aohan, located in the eastern part of Inner Mongolia Chifeng City, is a seasonal sand area. Every spring, the mainland monsoon carries sand and sand flying around, hitting the villages, hills and fields here. Highway can not escape the impact of wind and sand. Wind and sand not only bring great difficulties to the road maintenance work, but also seriously affect the road transport and traffic safety. Obstacles to the wind and sand have even led to the suspension of traffic, causing more inconvenience and loss to people’s lives and production.