Arsenic Sandstone Areas In The Middle Reaches Of The Yellow River Erosion Resistance To Promote Technology Integration And Demonstration Implementation Plan And Construction Of The Key Technology Research

Soil erosion is serious in our country,the ecological fragile district ecosystem function attaches great importance to the restoration and reconstruction,The research of soil and water loss,the effective governance measures is imminent.The Yellow River water conservancy science research institute led application "twelfth five-year" science and technology support project "Arsenic sandstone areas in the middle reaches of the Yellow River erosion resistance grows technology integration and demonstration",The project for arsenic sandstone in loess plateau area of governance requirements,of science and technology class multiple task planning, inter-ministerial cooperation and related key tasks in the construction of national major project specific implementation.Arsenic sandstone areas sparse vegetation, precipitation mainly take the form of rain, more coarse grain content in the soil over the lack of clay particles, degree of consolidation differential between structural strength low characteristic.Meet Shui Ni Hua arsenic sandstone under the effect of rain water scour easily cause serious soil and water loss in the region has become the main source of sediment deposition in the lower Yellow River, and fragile ecological environment in the region, dry climate, frequently and strong wind in the spring and winter, annual average wind speed is larger wind one of the origins of sandstorm in our country.Arsenic sandstone without water as hard as stone, the water is soft like mud, when the wind is weathering erosion, due to freeze-thaw action is strong, and make the ditch slope gully thick loose strata. How to apply new technology to improve arsenic sandstone features and regional ecological environment, prevent water loss and soil erosion, is still the current key technology need to be solved.This topic is the Yellow River water conservancy science research institute of the arsenic sandstone areas in the middle reaches of the Yellow River erosion resistance and technology integration and demonstration project of one of the project,based on the established consolidation grows on three-dimensional configuration mode of integrated demonstration area of jungar banner area two tigers in arsenic sandstone governance implementation plan and the construction key technology study, system arsenic sandstone areas of soil erosion is studied in a series of problems,preliminarily established a relatively complete arsenic sandstone slope treatment project, to effectively reduce arsenic sandstone soil and water loss and improve the ecological environment to provide the theory basis for the region, to overcome the similar region implementing scheme of technical problems, make the technology management the effective measures of the arsenic sandstone areas in the future.Through a large number of indoor and outdoor experiment research and achieved good effect, the large-scale implementation can be realized effectively reduce arsenic sandstone areas and the improvement of ecological environment, soil and water loss for arsenic sandstone areas provide important technical support and scientific basis for comprehensive control.Both the experiments and theoretical research has established the three-dimensional configuration mode of biology-material measures, the growth and design based on the natural slope revetment wohc arsenic sandstone areas.Natural ecological slope protection method of slope design: according to the degree of steep slope to the slow, the functional need of geological and ecological restoration, the slope protection structure design, from top to bottom is divided into four areas, namely the top area, steep slope area, moderate slope area, gentle slope zone and the bottom slope foot area, different measures for each partition with management;for the implementation of the method made the corresponding construction organization design, the quality control in the process of implementation method, safety measures and environmental measures made clear requirements, through the demonstration experiment, to record the test results and data analysis to log out the design scheme of governance arsenic sandstone areas of soil and water loss has a significant effect.