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

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

CN111796321AInactive Publication Date: 2020-10-20NANJING UNIV OF SCI & TECH
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  • Earthquake early warning method and system for high-speed railway
  • Earthquake early warning method and system for high-speed railway
  • Earthquake early warning method and system for high-speed railway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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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Abstract

The invention discloses an earthquake early warning system and method for a high-speed railway. The earthquake early warning system comprises an earthquake detection table along a high-speed railway for collecting earthquake information, a traction power supply system for controlling train operation, a storage device and a control device. The control device is used for controlling the operation ofall the parts and is connected with external equipment such as an external computer device to realize communication and control. The technical key points of the system comprise the following steps: 1, an earthquake monitoring station along a high-speed railway monitors earthquake waves and judges that the earthquake waves are destructive; 2, the control device sends a power-off instruction to a traction substation in the section; 3, when a train-mounted ATP finds that a pantograph catenary is powered off, a braking instruction is automatically sent out, and the train is stopped emergently; and 4, the earthquake intensity information of the early warning is stored into a historical database. According to the earthquake early warning method, the earthquake early warning time is greatly advanced, and a train can respond to the emergency situation of an earthquake earlier and faster.

Description

technical field [0001] The invention relates to the technical field of high-speed railway environmental disaster early warning, in particular to a high-speed railway earthquake early warning system. Background technique [0002] The probability of an earthquake is very small, but it is very harmful to the safety of railway traffic. The unpredictability and huge destructiveness of its occurrence have greatly tested the stability of infrastructure and the ability of automatic emergency disposal of earthquakes. [0003] High-speed railway earthquake early warning means that after an earthquake occurs, before the seismic wave spreads along the high-speed railway, an early warning message is sent out a few seconds to tens of seconds in advance, the power supply of the train is cut off, and the train is stopped in an emergency to reduce losses. After the earthquake, the P wave travels faster than the S wave, and reaches the fortified area faster than the S wave. [0004] In the ...

Claims

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Application Information

Patent Timeline
20 Oct 2020
Publication
CN111796321A
IPC
G01V1/00; G01V1/24
CPC
G01V1/24; G01V1/01
Inventors
胡启洲; 吴翊恺