Research On Automatic Monitoring And Safety Early Warning Technology Of Bedding High Rock Slope

Due to the special structure of bedding rocky high slopes,slope instability is more likely to occur,and its safety and stability issues deserve more attention than ordinary slopes.Monitoring of the slope excavation construction process and after completion is particularly important.Stable monitoring transmission methods and accurate and timely early warning judgments are important guarantees to avoid disasters.These two points have also been automated slope monitoring in recent years.Direction of development.The slope at the Jishou East Station of Zhangjihuai High Speed Rail Station under construction is a typical situation of bedding rock high slope.Based on this monitoring project,its automatic monitoring methods and safety early warning technology are studied.The main research contents and main conclusions are as follows:Firstly,the influencing factors and safety stability analysis methods of bedding rock slopes are listed and summarized,and the mechanism of different failure modes of bedding rock slopes is elaborated,which serves as the basis for the subsequent research.Based on the engineering geological data and design and construction procedures of the high slope at Jishou East Station,the finite difference software FLAC3 D is used to establish a three-dimensional numerical calculation model for the slope before and during the excavation process,and the slope stability,stress field,and displacement field are analyzed.Numerical simulations were performed,and the changes in the displacement field,stress field,and plastic area of the slope during different excavation processes were analyzed.Based on the comprehensive analysis,the potential danger areas and key monitoring indicators of the bedding slope of Jishou Station were determined.Based on the physical and geographic characteristics of Jishou Station and the long-term monitoring requirements of the project,the main monitoring content of highslope slopes has been formulated,and a combination of slope automatic monitoring technology and Internet of Things technology has been used to implement sensor placement for key monitoring indicators in potentially dangerous areas.The use of the emerging technology of the Internet of Things NB-Io T as the basis for the establishment of an automatic slope monitoring system.This technology has the advantages of stable transmission,low power consumption and low cost,which will improve the effectiveness of automatic slope monitoring.Considering the influence factors of slope stability,a multi-index evaluation system of bedding rock slopes was established.The improved fuzzy analytic hierarchy process is used to comprehensively evaluate the entire slope,and its evaluation steps and methods are introduced in detail.The slope safety early warning level is divided into four levels,and the data collected by the slope automatic monitoring technology is used to judge by multiple indicators,and the corresponding early warning instructions are made based on the results of comprehensive assessment.Taking this as the reference plan for the Jishou East Station automated monitoring system,it will also make corresponding suggestions for similar projects.