The Research Of Stability Of 3D-geomat Slope Protection System Under The Condition Of Earthquake And Rainfall

Since the reform and open policy, our country economy had developped rapidly, increasing infrastructure construction lead to a large number of bare artificial slope inevitably.The traditional engineering protection slope treatment can prevent water loss and soil erosion, but it also has disadvantages of poor durability and poor ecological benefits.Three-dimensional geomat vegetation slope protection technology,combined with 3D-geomat and vegetation, can effectively improve the stability of the slope and scouring resistance.However,the most of current research of 3D-geomat focused on soil fixation,scour prevention and reinforced slope protection.The research of the stability of 3D geomat slope protection system before the plants grow up is not common,especially for the rivet spacing,which can provide system to protective sliding resistance.So,in order to define the stability of 3D geomat slope protection system in the primary stage and determine the safety values of rivet spacing on the basis of the safety factor.it is necessary to research the stability of 3D geomat slope protection system deeply.1.The analysis of mechanism of 3D geomat slope protection system.Introduce systematically the research background and the present situation of 3D geomat slope protection system,analyze intensively the mechanism of 3D geomat slope protection system,and summarize the related research data.2.Mechanical stability analysis.Based on the analysis of slope and failure mode of 3D geomat slope protection system,determine calculation model for 3D geomat slope protection system under the condition of the earthquake and rainfall,deduce the computation formula of safety factor under the condition of the earthquake and rainfall.Comprehensive analysis of the influence of slope angle,friction angle.rainfall intensity,earthquake intensity and rivet spacing to Safety factor.3.Stability design charts for rivet spacing.In the limit equilibrium state.deduce the computation formula of rivet spacing.,give the Stability design charts for rivet spacing in four different cases.4.Simulation test.Design test to simulate 3D geomat slope protection system on rock slope under the condition of rainfall,contrast The test results with the theoretical calculation results to verify the effectiveness of design chart of safety values.5.Analysis of engineering example.introduce the application of calculation and analysis of 3D geomat slope protection system and design chart ofrivet spacing safety values.With examples,using ofsafety coefficient calculation to evaluate the stability of 3D geomat slope protection system In different situations,and using the design chart to determine the safety values of rivet spacing according to the preset safety coefficient.