The Analysis Of Identification And Stability And Comprehensive Treatment Of Ancient Slope In Yunshan Meilu

Ancient landslides' appearance is often obscured due to their age and long-term denudation and flattening,but a little carelessness can easily induce their rejuvenation.Therefore,the identification and prevention of ancient landslides are particularly important.Yunshan Meilu Landslide is located on the east side of the Yunshan Meilu real estate project in the north section of Qishan Avenue,Duyun Economic Development Zone,Guizhou City.The slope's toe will be excavated in the second phrase of the construction.The complexity and uncertainty of the slope pose a serious threat to the safety of the community under construction at the foot of the slope.This article identified the ancient landslide after detailed field survey and geological survey of the slope.Focus on the study of the morphological characteristics,material composition,deformation and failure of the ancient landslide,and poor geological characteristics.Using geological survey data and geotechnical test results,combined with Midas GTS numerical simulation analysis and Soilworks limit equilibrium analysis,the slope is under normal working conditions.And analyze the stability of rainstorm conditions.Secondly,the author develops and implemenst monitoring and measurement program,provide technical support and safety warnings for community construction and final operation,and compare theoretical analysis with phased on-site monitoring and measurement results.At the same time,the stability of the excavation of the slope toe in the second phase of Yunshan Meilu Project will be evaluated,the remaining sliding force will be calculated,and practical and feasible stability analysis and evaluation will be given.Finally,the slope is prevented and controlled.Based on the universal design support,the single-row pile position and the double-row pile combination are optimized separately,and a reasonable supporting row of piles is selected from the two,and the foundation further optimize the pile spacing,pile section size,pile length,etc.,and obtain an economical and reasonable treatment program.The specific research results are as follows:1.I will obtain survey data and diagnose ancient landslides.Analyze and describe the characteristics of this ancient landslide.At the same time,I will combine the existing research results on the ancient landslide to better diagnose it.2.Through investigation to obtain meteorological and hydrogeological data,surrounding environment,special rock and soil and bad geology,stratum lithology,and seismic effects of the landslide;3.According to the landslide survey rock and soil samples,analyze the characteristics and possible hazards of the slope.Do experiments to obtain relevant indicators of rock and soil samples and fix it.Then combine the survey data to analyze the characteristics of the sliding zone.4.Analyze the stability of the slope in both sunny and heavy rain conditions and do this before and after excavation.Analysis method adopts limit equilibrium and strength reduction method.Obtain slope stability data under various conditions and give guidance.5.Develop a monitoring plan,monitor the slope surface displacement and the internal displacement of the slope.Analyze the results through monitoring and evaluation theory.Provide further advice for follow-up governance6.First adopt general support for the slope.and then focus on optimizing the pile.Including: combination method and arrangement method,length and area.Obtain the best support plan through comparison optimization and progressive optimization.