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根据青海湖克土沙地6种不同规格麦草方格沙障的全年插钎蚀积监测和风季后凹曲面形态测量,各规格凹曲面的形成主要受控于冬春季节西风和西北风的控制。东西向1 m间距的小规格堆积沙埋严重,蚀积强度大于15 g/cm2,且全年处于不断堆积状态;2 m间距的大规格中心偏南部位侵蚀严重,蚀积强度小于10 g/cm2;1.5 m间距的规格蚀积强度适中,容易形成稳定凹曲面,且蚀积年变化较小。综合分析,1.5 m×1.5 m规格的综合防护指数最大为0.64,为高寒沙区最为适宜的规格,其余规格可视地形和风况环境适当采用。
According to the annual plunge erosion monitoring and the concave curved surface morphology measurement of six types of wheat straw grid barriers on the sandy land of Qinghai Lake, the formation of concave curved surface of each specification is mainly controlled by the westerly and northwest winds in winter and spring control. Small scale sediment sand with a distance of 1 m from east to west was seriously buried and the erosion strength was more than 15 g / cm 2, and was continuously accumulated throughout the year. The large scale center at 2 m spacing was seriously eroded southward with an erosion strength of less than 10 g / cm2; 1.5 m spacing specifications Etched intensity is moderate, easy to form a stable concave surface, and the erosion of small changes in the year. According to the comprehensive analysis, the comprehensive protection index of 1.5 m × 1.5 m is 0.64, which is the most suitable size for the high cold sands. The other specifications are suitable for the topography and wind environment.