Research On Application Technology Of Micro-pile Retaining Wall Combined Structure In Slope Regulation

With the rapid development of China’s economic construction,a variety of engineering areas will encounter a lot of slope problems and how to effectively manage the slope is an urgent problem to be solved.As a new type of slope treatment method,micro-pile retaining wall has a wide application base and prospect in slope engineering.This paper summarized the theoretical design method of micro-pile and analyzed the theoretical basis of different design theory and its corresponding advantages and disadvantages.Through the summary of the existing micro-pile composite structure design system,the engineering applicability and advantages of each system have been analyzed.The micro-pile retaining wall composite structure has advantages of retaining wall and the traditional anti-slide pile and can effectively avoid their shortcomings.In this paper,the numerical simulation of FLAC3D software has been used to analyze the horizontal displacement,vertical displacement,pile displacement of micro piles,and the sensitivity of pile spacing and pile row spacing.These analyses provide the theoretical basis for the setting of the specific parameters of the composite structure in the slope engineering.According to the design parameters of micro-pile reinforcement,the safety of micro-piles and upper retaining wall design was checked.At the meantime,the overall stability,anti-overturning and foundation bearing capacity checking were carried out.Simultaneously,according to years of rainfall situation in the FuXi area,designing the slope of the drainage system.The combination of micro-pile retaining wall structure is novel,and the experience of research and engineering application is not rich enough.The paper summarizes the relevant theories and analyzes the effect of practical engineering application,which has certain innovation significance and also promotes the application and development of this combination form in engineering.