Side slope lonestone stability monitoring and early warning method based on Doppler long-range laser vibration measurement technology
A laser vibration measurement, monitoring and early warning technology, which is applied to measurement devices, ultrasonic/sonic/infrasonic waves, instruments, etc. The effect of remote and portable equipment
Active Publication Date: 2019-12-20
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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[0002] At present, there are many monitoring and early warning methods for the stability of slope boulders at home and abroad, but there is no report on the monitoring and early warning methods of slope boulder stability based on Doppler remote laser vibration measurement technology.
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[0051] as attached Figure 1-6 As shown, a method for monitoring and early warning of slope rock stability based on Doppler remote laser vibration measurement technology includes the following steps:
[0052]①Configure the Doppler remote laser vibration measurement system for slope rocks; the Doppler remote laser vibration measurement system includes a laser speed sensor 1, a vibration speed signal demodulator 2, a filter 3 and a data analysis processor 4, and a laser speed sensor Connect to the vibration velocity signal demodulator by data line 5, the vibration velocity signal demodulator is connected to filter by data line 5, and filter is connected to data analysis processor by data line 5;
[0053] ②Laser velocity sensor emits laser light to irradiate the flat part of the slope boulder 6 surface, and the reflected laser collected by the laser velocity sensor performs Doppler frequency shift analysis to obtain the x, y, z three-dimensional vibration velocity signal of the s...
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A side slope lonestone stability monitoring and early warning method based on a Doppler long-range laser vibration measurement technology is characterized in comprising the following steps: configuring a side slope lonestone Doppler long-range laser vibration measurement system, wherein the Doppler long-range laser vibration measurement system comprises a laser velocity measurement sensor, a vibration velocity signal demodulator, a filter and a data analysis processor, the laser velocity measurement sensor is connected to the vibration velocity signal demodulator by using a data cable, the vibration velocity signal demodulator is connected to the filter by using a data cable, and the filter is connected to the data analysis processor by using a data cable; obtaining three indexes of a sideslope lonestone vertical direction inherent vibration frequency, a particle trajectory and an amplitude by using the Doppler long-range laser vibration measurement system; setting three index early warning values of the side slope lonestone vertical direction inherent vibration frequency, the particle trajectory and the amplitude; comparing three parameters of the side slope lonestone vertical direction inherent vibration frequency, the particle trajectory and the amplitude with the set early warning values, and performing system early warning when the parameters exceed the early warning values. According to the monitoring method, monitoring and early warning are performed on the side slope lonestone according to dynamic characteristic parameters of the side slope lonestone.
Description
technical field [0001] The invention belongs to the technical field of highway, railway and hydropower engineering, and specifically relates to a stability monitoring and early warning method applied to slope boulders, specifically a method for judging edge A monitoring and early warning method for the stable state of slope boulders. Background technique [0002] At present, there are many monitoring and early warning methods for the stability of slope boulders at home and abroad, but there is no report on the monitoring and early warning methods of slope boulder stability based on Doppler remote laser vibration measurement technology. [0003] With the development of highways, railways and hydropower projects, there are more and more high and steep slopes. It is often reported at home and abroad that the instability of high and steep slopes and boulders has caused loss of life and property, which seriously threatens the safety of project operation and maintenance. [0004]...
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IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 贾艳昌姜彤谢谟文方东敏
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER