Earthquake early warning method and system for high-speed railway
A high-speed railway and earthquake early warning technology, applied in seismology, seismic measurement, seismic signal recording, etc., can solve the problems of high safety hazards of railway traffic
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[0033] A high-speed railway earthquake early warning system, taking the 2011 Great East Japan Earthquake as an example, includes steps such as figure 2 :
[0034] Step S01: JR EAST, the operator of East Railway in Japan, has deployed many seismic monitoring stations along the Shinkansen.
[0035] Step S02: When the earthquake occurred, the monitoring station located in Shinmachi, Wakudani Town, Miyagi Prefecture measured the acceleration, velocity and displacement time history map when the earthquake wave arrived.
[0036] Step S03: 100 sets of velocity data in the UD direction obtained at a frequency of 100 Hz within one second of receiving the P wave, such as image 3 , record a speed data every 0.01s, and the time corresponding to each data is the sum of the horizontal and vertical time scales. Calculated τ c ≈1.9s, greater than the set threshold of 0.6s, it can be judged that the earthquake is harmful.
[0037] Step S04: Start the early warning, and judge the area aff...
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