Jin Duicheng South Open PhaseⅡ Project Of Soil And Water Loss Disaster Situation And Countermeasures Research

With the further development of our country’s economy, a lot of mining development, mining area of surrounding soil and water loss disaster problem increasingly prominent, jinduicheng open-pit south low phase ii project in mining area is located in the qinling mountains The rainfall is abundant, the high risk areas of soil and water loss disaster zone. The soil and water loss disaster prevention research is still not enough comprehensive, combined with local conditions, targeted prevention and control of soil and water loss disaster mechanism and countermeasures research becomes more important and urgent.In south open pit of jinduicheng phase ii project as the research object, according to field survey data, analysis of the study area of soil and water loss disaster factors; Through the analysis of the runoff plot test, the change law of soil erosion under different combinations and characteristics; And control countermeasure is put forward, and the countermeasures taken by the monitoring and analysis.According to the field survey data of study area, analysis the influence of soil and water loss disaster in the study area of natural factors are: climate, topography, surface drainage, regional geological, hydrogeological characteristics, etc; Through the field runoff plot experiment it is concluded that the larger the runoff of slope erosion and sediment yield of rate is larger also, also the most serious soil and water loss disaster degree; The same slope and the period, the larger the flushing flow, the sediment yield rate is, the greater the degree of soil and water loss disaster becomes more serious; And different slope surface covering, soil and water loss disaster degree is not the same; Through experimental analysis, the paper puts forward countermeasures and engineering measures for disaster prevention and control of soil erosion, plant, temporary measures, prevention and management measures; To monitor the quality of regional soil and water conservation measures and, draw a disturbance land reclamation rate is 96%, water loss and soil erosion control, slag, block rate is 98%, 97% than 1.03, the vegetation restoration of soil and water loss control coefficient of 99%, 6% coverage of trees;Thus conclude that because of the influence of the engineering activities, the original landscape is destroyed, a large number of excavation face exposed, and the area as part of the qinling mountains, calendar year rainfall is larger, causing serious surface water flushing; It is concluded that under natural conditions, slope erosion has three processes: surface erosion, rill erosion, shallow gully erosion; And analyze the factors influencing the mining area of soil and water loss disaster three: runoff, erosion, slope. And water and soil conservation measures are put forward; Through the survey research area of soil and water conservation measures the overall effect is good; From investment estimation, ecology, conservation benefits and social benefits after the four perspective of soil and water conservation measures, achieve the organic unity of economic and ecological protection.