Application Of Buried Double-row Piles In Soil Landslide Treatment Engineering

Buried double-row piles are widely used in deep foundation pit support and large-scale landslide control projects because of their advantages of large overall stiffness,large lateral stiffness resistance,strong anti-sliding ability and reasonable force.This paper takes the landslide control project of a Hope School in Hunan as the research object,and comprehensively analyzes the stability of the slope according to the topography,stratum lithology,geological structure and hydrogeological conditions of the landslide area,and then uses the finite element software.Numerical simulation analysis was performed.The main findings and conclusions of this paper are:(1)Using a combination of on-site investigation,drilling and indoor tests,the landslide is determined to be a soil-type landslide through comprehensive research and analysis.The main reasons for the formation of the landslide are analyzed.The stability of the three sections of the landslide is calculated.The most dangerous section of the landslide is the II-II section,and the section is under steady state under natural conditions.In an unstable state under heavy rain conditions.(2)Using the finite element software Midas/GTS to carry out numerical simulation analysis of the slope of II-II section before and after the embedded double-row pile support,from the aspects of stability safety factor,displacement deformation and shear strain of the slope body.A comprehensive analysis.The slope is in an unstable state under natural conditions.After the embedded double-row pile is supported,the slope body can be effectively stabilized,and the stability safety factor of the slope body is increased from 1.0875 to 1.4875,which is higher than the requirements of the specification and the safety factor.Increased by 36.8%.Moreover,the maximum displacement and shear strain in the X and Y directions of the slope are greatly reduced,and the slope is in a stable state.(3)The results of monitoring data show that the position of the maximum displacement of the slope is consistent with the results of this paper.The accuracy of the study is verified,which indicates that the buried double-row pile has better control effect on the landslide treatment.