Study On Slope Deformation Monitoring And Parameter Optimization Of Xiwan Open Pit Coal Mine

Through the deformation monitoring and stability analysis of the slope,the unstable section of the suspicious slope is delineated and the type of landslide on the unstable slope is determined,so as to provide practical basic data for the study of the deformation and failure process of the slope and the medium and long term forecast of the landslide.Then use the data from the slope deformation monitoring,feedback to further optimize the design,determine a safe and reasonable slope angle,eliminate safety hazards in the slope engineering,and ensure the safe production of surface coal mines.Based on the geological data and the status of surface coal mining,the paper analyzes the main factors affecting the stability of the open pit slope.Based on geotechnical and mechanical test results,the geotechnical mechanical calculation parameters that are in line with the actual project are determined.Using the limit equilibrium method,I select the typical slope geological profile,and conduct a stability analysis of working slope,end slope,non-working slope and waste-dump,divide the safety level of the open pit slope.This paper analyzes the main monitoring technology of surface deformation of mine slope at present,through the analysis and comparison of satellite navigation technology(GNSS),imaging radar technology and measuring robot technology scheme,recommend GNSS slope monitoring scheme suitable for Xiwan open pit mine,design Xiwan open pit mine slope monitoring system.According to the analysis and research on the monitoring data of the slope monitoring system of Xiwan open pit mine,the existing slope of Xiwan open pit mine is optimized,the slope angle of the north side is increased to 33,and the slope angle of the south side is increased to 32.Under the premise of ensuring the safety,the optimized two sides can increase the raw coal output,increase the sales income,increase the profit and obtain great economic benefits.