分布式光纤振动监测数据

合肥轨道1、2、3、4、5、6、7、8号线及S1机场线，共计333公里，全线网安装了15台分布式光纤地震仪（DAS）,将隧道内通信光纤和数据采集子系统进行单端连接，通过将激光发射模块向光纤中发射脉冲激光。然后，微弱光捕获模块针对光纤中的后向散射光进行捕获。再然后，瑞利散射光解调模块对后向散射光中的瑞利散射进行解调以获取振动数据。最后，数据存储控制软件将振动数据存储在数据存储子系统中。 可提供2026年~2030年期间24小时实时监测数据，数据保留90天，采用H5二维数组结构形式保存。收集了轨道沿线振动信号，包括地面车辆、机械、施工振动信息，隧道内列车、轮轨、风压、结构振动信息，隧道周边地下水、地层、市政管道等振动信息。Hefei Rail Transit Lines 1, 2, 3, 4, 5, 6, 7, 8 and the S1 Airport Line, with a combined length of 333 km, have a total of 15 distributed fiber-optic seismometers (DAS) deployed across the entire rail network. The communication optical fibers within the tunnels are connected to the data acquisition subsystem via a single-ended configuration. The operational workflow is as follows: first, the laser emission module emits pulsed laser light into the optical fibers; next, the weak light capture module captures the backscattered light from the fibers; then, the Rayleigh scattering demodulation module demodulates the Rayleigh scattering component in the backscattered light to obtain vibration data; finally, the data storage and control software stores the acquired vibration data in the data storage subsystem. Real-time 24-hour monitoring data covering the period from 2026 to 2030 is available, with all data retained for 90 days and stored in the format of H5 two-dimensional arrays. The dataset collects vibration signals along the rail transit network, including vibration information from ground vehicles, machinery and construction activities; vibration information related to trains, wheel-rail interactions, wind pressure and structural vibrations inside tunnels; as well as vibration information of groundwater, strata and municipal pipelines surrounding the tunnels.