高速公路沙害防治技术研究-以丹东-拉萨高速公路新地-麻黄沟段为例

Sand Control Techniques and Benefit Analysis on Sand-prevention Engineering System for Highway in Desert Region

本文以新地—麻黄沟高速公路防沙体系效益为依据,探讨分析了高速公路沙害的特点以及防沙体系建设的基本要求。研究表明,高速公路沙害防治需要采取适当抬高路基,建立稳固的防沙体系并要适当加大防护带宽度的综合措施。该地区公路防沙体系的结构配置对干旱、半干旱沙漠地区高速公路沙害防治具有一定的借鉴作用。

Strategic position and important function of highway development in desert region at the western region development decided that the sanay-prevention of highway has became the main contents in the transportation circuit. This text take Xindi-Mahuanggou highway as an example to researching defending benefit of the sandy prevention system. The highway which situated in the southeastern edge of Ulanbuh Desert, effects by the desert imperilment badly, because the wind and sand moved forward and back at there, and impact the highway whole year. Based on the analysis of terrain, physiognomy, causes and characters of the sand damage, the study brings forward that the synthetically measures should be used. The engineering measure is radical, while the vegetable measure is ultimate. And think that this sandy-prevention system of Xindi-Mahuanggou highway having a reasonable design, matching the native natural environment; The sand-prevention belt and the sand-fixed belt have changed the sandstorm flows the construction, lowered the sandy-transportation rate. At the same time, it increased the roughness and take an important role in weakening wind velocity, preventing sand, controlling dune appearance variety and keeping surface stability; The sand system installs of this region＇s highway did a reference function to the sandy-prevention of highway in arid sandy land and semi-arid sandy land.