植物护坡工程质量的等级评价研究

在国内外边坡生态恢复工程及评价理论研究的基础上,以结构稳定和功能持续为导向,结合系统工程理论与植物护坡工程质量特征,建立了以力学、植被及基质3大类评价指标为主体的植物护坡工程质量评价指标体系.通过层次分析法确定各指标权重及排序,并以灰色系统理论为依据,构建递阶多层次灰色综合评价模型,用于四川省彭州市升平镇人工边坡3类不同工程措施植物护坡工程(种子格栅、植物网、喷播植草)的实例评价.评价结果显示,3类植物护坡工程措施质量等级均为良以上,且喷播植草植物护坡工程措施优于种子格栅、植生网,符合实际情况,说明构建的评价体系及质量等级划分方法科学可行,能比较客观准确地反映植物护坡工程系统的质量状况与等级,具有较强的实用价值.

Grade Evalution on Quality of Slope Protection Engineeing by Vegetation

On a basis of understanding the domestic and foreign theoretical researches on ecological restoration engineering and related evaluations,the quality characteristics of slope protection engineering by vegetation were summarized and an evaluation index system was established in combination with the systematic engineering theory by threading structure stability &functional continuity as a guidance.This system contained three main evaluation indexes:mechanical protection quality,slope plant community quality and base material quality.Analytic hierarchy process(AHP)was conducted to determine the weight and order of each index.Meanwhile,according to the grey system theory,a low-cost hierarchy grey comprehensive evaluation model was constructed to evaluate the slope vegetation protection engineering handled with three different engineering measures in Pengzhou City,Sichuan Province,China.Results showed that the grades for all the slopes were ranked as good and the grades that slopes with the injection technoogy of thick layer base material mixture were better than those disposed with seed grilles or vegetation nets,which coincided with the factual account.All these outcomes indicated that the evaluation index system and its grades could objectively and accurately reflect the quality and grade of the slope vegetation protection system,which means that it has good practical values.