發(fā)布時間：2019-01-06 06:00

【摘要】：本文以“營雙高速公路”為依托,開展了沙漠高速公路生態(tài)防護(hù)技術(shù)應(yīng)用研究,主要研究工作如下:(1)對甘肅省境內(nèi)典型沙漠公路進(jìn)行調(diào)研,調(diào)研內(nèi)容主要包括固沙措施(機(jī)械固沙措施、植物固沙措施)、防風(fēng)阻沙措施、公路防護(hù)效果等,總結(jié)出依托工程適生植物種類。(2)通過安置集沙儀、風(fēng)速廓線儀、風(fēng)沙檢測儀、小型梯度氣象站等設(shè)備,測試了依托工程附近不同類型地面風(fēng)力指標(biāo)、風(fēng)沙流結(jié)構(gòu)特征及機(jī)械組成。(3)采用投影照相法測定植被的覆蓋度和生物量,根據(jù)立地質(zhì)量的分類原則和指標(biāo),將營雙高速公路沙漠路段立地質(zhì)量分為四類,分別為Ⅰ類立地(基本沒有風(fēng)沙危害性)、Ⅱ類立地(風(fēng)沙危害性較弱)、Ⅲ類立地(風(fēng)沙危害性較強(qiáng))、Ⅳ類立地(風(fēng)沙危害性強(qiáng))。(4)根據(jù)沙漠工程固沙理論和植物固沙原理,選擇花棒、檉柳等適宜防風(fēng)固沙植物,并設(shè)計(jì)了營雙高速公路沙漠段邊坡防護(hù)典型模式。考慮施工條件、經(jīng)濟(jì)效益、植物的成活率、景觀美觀程度及協(xié)調(diào)性等因素,提出了基于模糊數(shù)學(xué)的沙漠公路邊坡防護(hù)優(yōu)選方法。
[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，

本文編號：2402433