营双高速公路沙漠段路基生态防护技术研究
发布时间：2019-01-06 06:00
【摘要】：本文以“营双高速公路”为依托,开展了沙漠高速公路生态防护技术应用研究,主要研究工作如下:(1)对甘肃省境内典型沙漠公路进行调研,调研内容主要包括固沙措施(机械固沙措施、植物固沙措施)、防风阻沙措施、公路防护效果等,总结出依托工程适生植物种类。(2)通过安置集沙仪、风速廓线仪、风沙检测仪、小型梯度气象站等设备,测试了依托工程附近不同类型地面风力指标、风沙流结构特征及机械组成。(3)采用投影照相法测定植被的覆盖度和生物量,根据立地质量的分类原则和指标,将营双高速公路沙漠路段立地质量分为四类,分别为Ⅰ类立地(基本没有风沙危害性)、Ⅱ类立地(风沙危害性较弱)、Ⅲ类立地(风沙危害性较强)、Ⅳ类立地(风沙危害性强)。(4)根据沙漠工程固沙理论和植物固沙原理,选择花棒、柽柳等适宜防风固沙植物,并设计了营双高速公路沙漠段边坡防护典型模式。考虑施工条件、经济效益、植物的成活率、景观美观程度及协调性等因素,提出了基于模糊数学的沙漠公路边坡防护优选方法。
[Abstract]:Based on "Yingshuang Expressway", this paper has carried out a study on the application of ecological protection technology for desert expressway. The main research work is as follows: (1) A survey of typical desert highways in Gansu Province is carried out. The main contents of investigation include sand fixation measures (mechanical sand fixation measures, plant sand fixation measures), wind sand prevention measures, highway protection effects, and so on. (2) through the installation of sand collector, wind speed profiler, etc. The wind sand detector, small gradient weather station and other equipment have been used to measure the different types of surface wind force indexes, the structure characteristics of wind-sand flow and the mechanical composition in the vicinity of the supporting project. (3) the coverage and biomass of vegetation were measured by projection photography. According to the classification principle and index of site quality, the site quality of desert section of Yingshuang Expressway is divided into four categories, namely, type I site (basically no wind and sand hazard), and type 鈪，
本文编号：2402433
[Abstract]:Based on "Yingshuang Expressway", this paper has carried out a study on the application of ecological protection technology for desert expressway. The main research work is as follows: (1) A survey of typical desert highways in Gansu Province is carried out. The main contents of investigation include sand fixation measures (mechanical sand fixation measures, plant sand fixation measures), wind sand prevention measures, highway protection effects, and so on. (2) through the installation of sand collector, wind speed profiler, etc. The wind sand detector, small gradient weather station and other equipment have been used to measure the different types of surface wind force indexes, the structure characteristics of wind-sand flow and the mechanical composition in the vicinity of the supporting project. (3) the coverage and biomass of vegetation were measured by projection photography. According to the classification principle and index of site quality, the site quality of desert section of Yingshuang Expressway is divided into four categories, namely, type I site (basically no wind and sand hazard), and type 鈪，
本文编号：2402433
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