川九公路震损边坡生态防护方案优选  

Research on Optimal Selection of Ecological Protection Schemes for Post-earthqucke Slopes along Chuanzhusi-Jiuzhaigou Highway

作　　者：王晓文 谭昌明 孙大远 李俊卓 WANG Xiao-wen;TAN Chang-ming;SUN Da-yuan;LI Jun-zhuo(Sichuan Highway Planning,Survey,Design and Research Institute Ltd.,Chengdu 610000,China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,成都市610000

出　　处：《公路》2022年第8期394-398,共5页Highway

基　　金：四川省重大科技专项课题,项目编号2018SZDZX0032;四川省交通运输科技项目,项目编号2021-WX-07。

摘　　要：川九公路是串联九寨沟、黄龙风景区的重要旅游线路,九寨沟地震造成公路沿线边坡产生大量不良地质,产生水土流失、生态失调等一系列问题,如何科学地对生态护坡方案进行优选,对川九公路生态护坡工程实施具有重要的意义。针对川九公路震损边坡生态防护需求,以结构特性、生态特性和施工特性为评价指标准则,构建了基于层次分析法的边坡生态防护方案优选模型,并结合原位试验对5种边坡生态防护方案进行了综合评价。结果表明:在评价指标中,稳定性、植被覆盖度和建造费用的权重值高于其他指标,分别为0.248、0.186、0.158;植物纤维毯防护表现为优,植生袋植草防护和客土喷播植物防护表现均为良,液压喷播植物防护表现为一般,覆土撒播种子防护表现为差。The Chuanzhusi-Jiuzhaigou Highway is an important tourist route that connect with Jiuzhaigou and Huanglong scenic spot.The Jiuzhaigou earthquake has caused a lot of unfavorable geology on the slopes along the highway, resulting in a series of problems such as soil erosion and ecological imbalance.How to scientifically optimize the ecological slope protection scheme is of great significance to the implementation of the ecological slope protection project of the Chuanzhusi-Jiuzhaigou Highway.In view of the ecological protection requirements of the earthquake-damaged slopes on the Chuanzhusi-Jiuzhaigou Highway, taking the structural characteristics, ecological characteristics and construction characteristics as the evaluation index criteria, an optimal model of the slope ecological protection scheme based on the AHP is constructed, and five ecological protection schemes of the slopes are comprehensively evaluated by in-situ tests.The results show that the weight values of the evaluation indicators stability, vegetation coverage and construction cost are higher than other indicators, which are 0.248,0.186,and 0.158 respectively;the protection of plant fiber blankets and the protection of soil sprayed plants are excellent, and the protection of planting bag grass is excellent.The performance is good, the performance of hydraulic spraying plant protection is average, and the performance of covering soil seeding protection performance is bad.

关 键 词：震损边坡 生态防护 层次分析法 指标体系 

分 类 号：U416.1[交通运输工程—道路与铁道工程] U417.1