Design And Realization Of On-line Monitoring System For Subway Blasting Vibration

Nowadays,metro has became the most popular transportation for citizens in big cities.With the rapid growth of city scale,the demand of metro becomes eagerly.Although the metro has brought convenience to travelling,but there are some other impacts.Just like every coin has two side,during the construction of metro,the biggest influence is that it may cause changes to current structures,like building viaduct,railway etc.The safety of metro construction is still the focus of the academic and engineering circles.According to incomplete statistics,by the end of 2015,a total of twenty-six cities in China opened urban metro,about one hundred and sixteen lines.Total length of the operating line of three thousand six hundred and eighteen km,and from 2015 to 2020 the total railway mileage will be increased by one thousand km per year.With the increasing scale of subway,safety accidents caused by metro construction in various regions are also increasing.This paper mainly aims at the foundation of the rock-based city in the metro construction process.The influence of blasting vibration on the surrounding structures as the research.From the point of structure safety monitoring,puts forward an automatic monitoring system instead of traditional manual inspection.So as to evaluate the influence of the structure on the surrounding structure in the process of metro blasting.The automatic on-line monitoring system mainly consists of three parts: the vibration sensor the vibration acquisition instrument and cloud service platform.The paper describes the vibration acquisition instrument,and introduces of the implementation scheme of on-line monitoring system.Finally,this monitoring system has been applied in the construction of the R3 line of Qingdao metro,and achieved the desired objectives and results.