Application Of Numerical Method To Analyze Mechanical Properties Of Permeable Concrete In Slope Protection Engineering Stability

With the rapid development of China's economy and the improvement of urbanization,people are more and more aware of the importance of environmental protection..It is required to consider not only the stability but also the dual function of greening and environmental protection in the application of slope protection engineering.As a kind of environment-friendly concrete,permeable concrete has been widely used in developed countries such as Europe,America,Japan and so on.Pervious concrete is a kind of porous structure concrete,which has a certain void,which provides a higher possibility for vegetation survival.On this basis,ecological pervious concrete has been developed.By reducing the alkalinity of permeable concrete,adding substrates,sowing plants,and then doing the However,when the concrete can meet the environment of vegetation growth,its strength is difficult to meet the standard of engineering application.In this paper,the combination of permeable concrete and anchor and shotcrete technology,to explore a new ecological slope protection technology,which can protect the rock slope as a whole and can also have the function of greening.In the design of mix ratio of permeable concrete,the main problem is porosity and strength.The strength requirement of Anchorage shotcrete is at least 20 MPa.At the same time,in order to meet the space and nutrient environment of vegetation growth,the porosity of permeable concrete is generally required to be more than 20%,due to the limitations of jet pipe.The maximum aggregate size of shotcrete should not exceed15 mm.The content is to find out the mixture ratio of permeable concrete whichmeets the conditions,and then apply it to slope protection project.This paper focuses on engineering examples,drawing on the similar engineering or field of ecological protection and Anchorage shotcrete protection engineering characteristics,to the Anchorage Eco-permeable concrete in rock slope protection engineering application is understood and explored.The following elements were completed:1.According to the technical requirements of the project,the volume method is introduced in detail,and the mixture ratio of permeable concrete is designed with the substitution ratio of fly ash and aggregate particle size.That is to say,with the replacement rate of fly ash,the diameter of the aggregate is 2.5-5mm / 5mm and the diameter of the aggregate is 2.5-5mm / 10 mm.10-15 mm)to design and determine the amount of materials needed.2.The parameters of the raw materials used are listed,and the test contents include: porosity,water permeability test,compressive strength test and flexural strength test.3.The data obtained from the test of all the specimens are sorted out,and the compaction ratio of the designed compressive strength more than 20 MPa and porosity greater than 20% meets the technical requirements of Anchorage and shotcrete permeable concrete.4.Combined with engineering examples,the protection design of rock slope with green water permeable concrete technology of Anchorage and shotcrete is carried out,and the construction technology is optimized.5.The stability of slope protection is obtained by numerical simulation,and the feasibility of Anchorage and shotcrete ecological permeable concrete technology is verified.