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为保证公路安全畅通,治理国道215线沙山沟路段流沙侵占公路的现象,入冬以来,甘肃省敦煌公路管理段采用在沙丘上栽埋麦草方格、路肩外干砌卵石平台、设置挡沙墙三种治沙方式,对该段公路沙害进行集中整治。国道215线沙山沟公路位于敦煌、阿克塞境内,地处河床,公路两侧沙山连绵,干旱少雨,寸草不生,加之戈壁沙漠多风,该段公路经常出现流沙淤塞边沟、淹没公路现象,特别是189K+900——190K+200间300米长的风口路段,更是遇风即阻。为了便于行车安全与养护,敦煌段坚持因地制宜,因害设防、疏导结合,标本兼治的治沙原则,从农民手中收购麦草,在路外沙丘上栽埋草方格,将沙丘牢牢地固定在地上,削弱了风沙流的活动能力。针对风沙流遇路堤出现沙粒因风速降低而出现的积沉现象,易在公路上形成舌状或片状积沙,该段采用“疏导”结合的治沙方式,在路基外侧用石头干砌成卵石平台,增加风沙流的输沙能力,使积沙被
In order to ensure the safe and smooth highway, governs the phenomenon of quicksand occupying the highway in the section of Shanshangagou of National Highway 215. Since the beginning of winter, the management section of Dunhuang Highway in Gansu Province has planted the gravel, Three kinds of sand control methods, the section of highway sand damage regulation. State Road 215 Shashagou Road is located in Dunhuang, Akersa territory, is located in the river bed, sand dunes on both sides of the road, dry, rainy, combined with windy Gobi Desert, the section of the highway often appear silting sand ditches, flooding roads, In particular, 189K + 900--190K + 200 300 meters long section of the road, it is the wind that resistance. In order to facilitate traffic safety and maintenance, Dunhuang adhere to local conditions, because of the harm fortification, counseling, tackling the principle of sand control, the acquisition of wheat from the hands of farmers, planting grass in the roadside sand dunes, the dune firmly fixed On the ground, weakened the activity of wind and sand flow. In view of the phenomenon of sediment due to the decrease of wind speed due to the decrease of wind speed in sandstorms, it is easy to form tongue-like or sheet-shaped sediments on the road. This section adopts the sand control method combining Dry pebble platform to increase the sand drift sand transport capacity, so that the sand is