Studies On The Technology Of Ecological Slope Protection Based On The Material-vegetation System

A lot of slopes are excavated owing to infrasture consturctions,e.g.highway,railway, the excavation slope destroyed the original vegetation cover, leading to a large number of secondary bare area as well as severe soil erosion, causing serious damage to the ecological environment. The use of eco-protection technology on the slope ecological governance can effectively achieve the ecological restoration of the slope to prevent soil erosion, as a basis for the theoretical and technological research is necessary.Due to the characteristics of rock slope, rock slope on ecological governance has always been a problem. In recent years, scholars have developed for high steep rock slope protection of the ecological technology which has broad application prospects. The technology is the core of the preparation of the material and the choice of green vegetation, based on current solid waste pollution in serious pollution, especially agricultural wastes for pollution of the rural ecological environment, the need of these resources to deal with solid waste use, drawing on previous research in this article results, through field investigation, laboratory testing and simulation testing on the green material selection and preparation of materials and their properties have been studied for optimization of native vegetation, is proposed for engineering practice, as well as the provision of technical methods of the theoretical basis. The results of the main work and research done are as follows:(1) The analysis of rock slope protection of the ecological principles of plants from the material and the hydrological effect of the material and the physical and chemical effects of plants, plant root analysis of the mechanical reinforcement effect of the protection function of the material to the soil (material) - the vegetation as a whole eco-protection system, a comprehensive summary of its ecological characteristics.(2) According to the nature of the characteristics of solid waste, solid waste options straw and mushrooms residue, manure, sludge and other materials obtained as a green material, combined with previous functional analysis of the material, the paper identified the components of the preparation of the material Green , including the soil, green material, water, adhesives, conditioner, water retaining agent, slow-release fertilizer, plant seeds, pH-regulator nine kinds of components, and the nature of the material of each component testing and analysis. the physical and chemical properties of the material for testing and analysis, results showed that the selected straw and mushroom residue, manure, sludge and so on organic matter content more than 29% , N, P and K nutrient content rich vegetation to meet the long-term needs.(3) From the material potted plant experiment using the green material samples and the comparison samples,and take the test of the plant germination rate, plant growth conditions, the contractility and the anti-evaporation of the material etg, receive the expriment result.use the basis data which test from the expriment and to take the analysis of variance,the result indicated,germination rates of each processing are quite high,the highest germination rate of 20% composite matrix +soil up to 79.8% ,followed by the processing of 20% peat+soil up to 78.2%. It receive the markedness difference between 20% composite material +soil and soil comparison. The processing of sludge and cow dung all higher than soil comparison, it indicated that peat,sludge,and cow dung has certainly accelerate effect. Biomass from the final look, the difference between the processings, 20% sludge + soil, 20%cow dung + soil, 20% composite material + soil and 20% peat + soil, the difference between the processings were significantly, the use of sludge as raw material for the growth of the highest 424.76 g/m2, followed by 20% cow dung + soil to 371.16 g/m2, 20% composite material + soil 337.08 g/m2, 20% mushroom residue + soil 239.97 g/m2, identified suitable solid waste for green material.(4) Through the simulated rainfall experiments, discussed soil erosion, nutrient loss and anti-erosion properties in different materials - vegetation systems,got the erosion modulus of different stages. With the growth of vegetation ,its erosion modulus gradually decreased, and the anti-erosion of the agricultural solid wastes is better than CK.(5) Combinated the vegetation distribution and growth of a variety of differences of Anhui region , through field investigation and testing, screening out of seven kinds of bermudagrass and other perennial herbaceous plants as the slopes protection of the main species, the nest grass seven kinds of dishes as a one-year-old herb slope use of the auxiliary seeds, such as east china locust tree,six kinds of shrubs use for slope protection.(6) Examples of projects, as well as an analysis of previous results, summed up the construction of slope protection of ecological processes, the main elements of the material ecological slope protection technology.