基于层次分析法的沙漠公路边坡生态防护方法评价

Evaluation of Ecological Protection Method of Desert Highway Slope Based on Analytic Hierarchy Process

以营双高速公路沙漠边坡为依托,对沙漠公路防沙体系的建设及生态防护、经济效益进行了研究,提出了生态防护设计方案。基于层次分析法中的多级模糊评价方法对沙漠路段的两个设计方案进行优选,根据沙漠公路边坡防护设计原则及适生植物选取原则对边坡防护中应用的各种措施进行防风固沙效益、经济效益比较分析,从中筛选出防治效果好,设置成本低,设计合理的边坡生态防护设计方案。结果表明:方案一略优于方案二,即路堑边坡采用柴草沙障护坡,在沙障内栽植花棒,播撒草籽,积沙平台采用红柳+撒播草籽。

This paper, based on the desert slope ecological protection and economic benefit of the of Yingshuang Highway, has studied the construction, sand control system for desert highway and provided an ecological protection design scheme. The optimized one of design schemes for desert highway is selected in the multi-level fuzzy comprehensive evaluation method of AHP, for the comparative analysis of economic benefits of windbreak and sand-fixation after various measures for slope protection taken according to the slope protection design principle of the desert highway and optimum plant selection principle and the ecological slop protection design scheme with good control effect, low cost and design reasonability has been choiced. The resuhs show Scheme 1 is superior to Scheme 2, i. e. use slope protection and planting of hedysarum scoparium and of firewood sand-protecting barrier for cut slope as seeding of grass seed in the sand-protecting barrier.