Study On Ecological Restoration Of High Steep Rock Slope In Wind Farm

In recent years,with the rapid development of economy,the environmental problems begin to intensify,and the resources are increasingly scarce.As a kind of clean energy,wind energy is widely valued and developed in China.However,due to the lack of understanding of the impact of wind power projects on the ecological environment,a large number of exposed rock slopes are produced in the process of wind farm construction,resulting in soil erosion,air pollution and landscape A series of negative effects such as sabotage.Therefore,the slope ecological protection in the wind farm area has become a hot research and concern.On the basis of previous research results,through field research,model test and practical engineering application,this paper mainly does the following work for the ecological restoration of mountain wind farm slope:(1)Selection of ecological slope protection technology.Based on the understanding of five kinds of ecological slope protection technologies commonly used in the current project and the evaluation of their advantages and disadvantages,the best scheme for the ecological restoration of high and steep rock slope in the wind farm area is selected,which is the combination of the vegetation concrete green slope protection technology and the Liana plant three-dimensional green slope protection technology.(2)Selection of high quality slope protection plants.Based on the plant investigation and the principle of slope protection plant selection,22 kinds of native slope protection plants were preliminarily selected,and then 9 kinds of high-quality slope protection plants were finally selected by AHP:Cynodon dactylon,festuca arundinacea and Oxalis which belong to herbaceous plants;Lespedeza bicolor,Rhus chinensis and Magnolia multiflora which belong to shrub;Broussonetia papyrifera,platycladus orientalis and pines which belong to tree.(3)Study on the arrangement of slopeprotection plants.Based on the observation of the plant ecological index and the measurement of the physical and chemical properties of the base material,the effects of spray sowing method(single layer spray,layer spray),grass irrigation ratio(1:1,1:3,1:5)and seed dosage(30g,45 g,60g)on the plant growth state were studied.The results showed that the spray sowing method of layer spray,grass irrigation ratio of 1:5 and seed dosage of 30 g were the best configuration for plant growth.(4)Practical engineering application of wind farm demonstration slope ecological restoration.After the selection of some high-quality slope protection plants for plant configuration,combined with the technology of vegetation concrete green slope protection,the practical engineering application of slope ecological restoration was studied,and then the effect of ecological restoration was evaluated by stages.The results show that: six months later,the demonstration slope is covered with dense plants,the vegetation coverage reaches 95%,the plant community combined with grass and irrigation has formed,the soil layer of spray seeding has no falling off,the slope has no erosion trace,and the practical application is successful,which providesa reference for the future ecological restoration of the wind farm slope.