Study And Application Of Ecological Slope Protection In River Regulation

With the rapid development of society and excessive exploitation of natural resources,the ecological environment is deteriorating and the river ecology is damaged.The behavior of river sand overmining,river garbage and sewage discharge all damage the river ecology,affect the river course to play its own role,and the river course itself also exists scour and siltation phenomenon,This will not only cause water damage,hinder the development of water conservancy,but also affect our own safety and health.As a water and land hub,slope protection plays the role of flood control and drainage,and is also the foundation of carrying river ecosystem.Therefore,it is necessary to take appropriate measures to restore and control the ecology of river slope protection.In this thesis,Jiahe River course in Changli County,Hebei Province is selected as the research object.Through the analysis and evaluation of traditional slope protection and ecological slope protection,the evaluation model is constructed,and the optimal slope protection form sui Table.for this project is selected.The main research results are as follows:(1)Based on the existing traditional slope protection and ecological slope protection,from its structural form,function,advantages and disadvantages,applicability and other aspects of analysis and comparison: Ecological slope protection not only has good performance in structural stability,but also can enhance the species diversity of slope protection,construct a benign ecological cycle system,and combine with the present situation of Jiahe River,select ecological slope protection as the construction form of Jiahe River slope protection.(2)Based on the structural form,economic characteristics,construction characteristics and environmental impact of slope protection,19 evaluation indexes were selected to construct the comprehensive evaluation index system of ecological slope protection system;Analytic hierarchy process(AHP)is used to determine the index weight,and the comprehensive evaluation model of ecological slope protection system is established by comprehensive evaluation index method and grey correlation degree method respectively.This evaluation model is used to evaluate the selection of slope protection form of Jiahe comprehensive treatment project.(3)This thesis analyzes the reasons for the difference between the two evaluation methods,the comprehensive evaluation index method is greatly influenced by subjective factors,and the grey correlation degree method is biased towards objective evaluation,Although there are some differences between the two methods,the results are that the slope protection in the form of ecological concrete is the best choice for the slope protection construction of the project,and both methods can be applied to the comprehensive evaluation and analysis of the river ecosystem in this project.(4)The criteria used in the comprehensive evaluation index system of ecological slope protection system constructed in this thesis are more comprehensive than other evaluation studies.The quantitative index is considered in the evaluation index,and the accuracy and reliability of the evaluation results are enhanced.It can also provide reference for other similar projects.