CN107703538A - Underground unfavorable geology survey data acquisition analysis system and method - Google Patents
Underground unfavorable geology survey data acquisition analysis system and method Download PDFInfo
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- CN107703538A CN107703538A CN201710828337.5A CN201710828337A CN107703538A CN 107703538 A CN107703538 A CN 107703538A CN 201710828337 A CN201710828337 A CN 201710828337A CN 107703538 A CN107703538 A CN 107703538A
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/003—Seismic data acquisition in general, e.g. survey design
Abstract
The invention discloses a kind of underground unfavorable geology survey data acquisition analysis system and method, the system includes elastic wave data collecting system, it is used to carry out elastic wave testing in hole in engineering site, so have and actively excite elastic wave field, more more stratum elastic wave signals of depth receive, the function of digital-to-analogue conversion and data record；Waveform processing module, its elastic wave data to different depth measuring point carries out bandpass filtering, effective waveform selects processing, according to stratum borehole data, calculates each depth waveform Mintrop wave take-off time delay, is converted to each take-off delay waveform of depth zero etc..The present invention, by carrying out waveform image conversion and image recognition to the elastic wave that collects, can find out the spatial distribution of unfavorable geologic body according to elastic wave in the difference of complicated Geotechnical Engineering Propagation characteristic, precisely reliable.
Description
Technical field
The present invention relates to a kind of acquisition analysis system and method, is adopted more particularly to a kind of underground unfavorable geology survey data
Set analysis system and method.
Background technology
The unfavorable geologic bodies such as solution cavity, fissure zone and fault belt are frequently encountered in engineering construction, if not
Underground can be verified in advance and whether there is unfavorable geologic body and its aqueous situation, it will bury serious potential safety hazard, it is most likely that
Cause casualties, construction delay and heavy economic losses.Based on the theoretical exploitation method of elastic wave image in underground poorly
Had a wide range of applications in matter exploration, but usually because investigation depth is excessive, duration, place limitation, effective essence can not be carried out
Accurate detection.Therefore, based on data collecting system and data analysis in the theoretical underground unfavorable geology exploration hole of elastic wave image
Method is significant in underground karst cavity surveying engineering.
Data acquisition and analytical technology integrate current ground work in underground unfavorable geology exploration hole based on elastic wave theory
On the basis of journey structure detection method quality, the data rapid analysis method based on image recognition technology is studied, emphasis solves
Conversion method and unfavorable geologic body identification technology between Wave data and subsurface structure image, establish a kind of based on elastic wave reason
The underground karst cavity survey data collection of opinion and analysis system.GIS (Geographic Information are used on this basis
System or Geo-Information system, GIS-Geographic Information System) spatial information analysis platform and Geo-Database
(data model that geography information is showed using standard relationship database technology) spatial database technology, explore a kind of based on sky
Between analytical technology synthesis Fast Evaluation method.Make China's geotechnical engineering structure exploration more science, quick, economy, specification,
It is horizontal to improve the exploration of China's geotechnical engineering structure；Formed a set of high accuracy, it is effective, highway subgrade, railroad track can be radiated
The large-scale geotechnical engineering structure investigation method such as structure, tunnel, reservoir dam, large-scale bank protection, atomic energy facility.This technology is to establishing
Geotechnical engineering structure surveys standard, it is ensured that safely, effectively reduces risk, improves the ability of solution of emergent event, promotes China's rock
Geotechnological journey safety management level is respectively provided with highly important meaning.
The content of the invention
The technical problems to be solved by the invention be to provide a kind of underground unfavorable geology survey data acquisition analysis system and
Method, it is used to survey the unfavorable geologic bodies such as underground karst cavity, fissure zone and fault belt, can be according to elastic wave in complicated rock
The difference of geotechnological journey Propagation characteristic, by carrying out waveform image conversion and image recognition to the elastic wave collected, look into
The spatial distribution (underground karst cavity, fissure zone, fault belt) of bright unfavorable geologic body, it is precisely reliable.
The present invention is that solve above-mentioned technical problem by following technical proposals：A kind of underground unfavorable geology survey data
Acquisition analysis system, it includes：
Elastic wave data collecting system, it is used to carry out elastic wave testing in hole in engineering site, so has and actively swashs
Elastic wave field is sent out, more more stratum elastic wave signals of depth receive, the function of digital-to-analogue conversion and data record；
Waveform processing module, its elastic wave data to different depth measuring point carries out bandpass filtering, effective waveform selects place
Reason, according to stratum borehole data, calculates each depth waveform Mintrop wave take-off time delay, is converted to each take-off of depth zero delay ripple
Shape；
Waveform image modular converter, it is used to handling obtained elastic wave waveform and is converted to image, bad under reservation
The wave character of geologic body, identify underground unfavorable geologic body locus；With fuzzy mathematics theory, computer is greatly reduced
Calculation resources consume, and the file type of output is available for a variety of post processors to use；
Wherein：
Elastic wave data collecting system includes elastic wave transmitter module, elastic wave data reception module, elastic wave data note
Module is recorded, wherein：
Elastic wave transmitter module is connected with elastic wave data recordin module, and it is used to excite elastic wave ripple in drilling orifice
, energy intensity can be changed as needed；
Elastic wave data reception module is connected with elastic wave data recordin module, and it is used to receiving more depth in drilling more
The elastic wave signal on stratum, and the elastic wave data that each sensor of real-time Transmission receives；
Elastic wave data recordin module is used to carry out the elastic wave data that receive digital-to-analogue conversion, and according to presetting
Parameter record data in a hard disk；
The waveform processing module includes waveform noise filtering module, take-off delay correction module, wherein：
Waveform noise filtering module, its waveform for recording to obtain to elastic wave data collecting system pre-process, filtering
Common noise in the unfavorable geology exploration engineering of underground, ensure the quality of data, improve the bad construction surveying accuracy in underground；
Take-off delay correction module, it is used to calculate each depth waveform Mintrop wave take-off time delay, is converted to each depth
Zero take-off delay waveform, elastic wave wavy profile data are obtained after arrangement, after waveform noise filtering module receives pre-treatment
Waveform, and input formation condition and calculated and rectified a deviation.
Preferably, a high-precision acceleration transducer is provided with the elastic wave transmitter module, it is used to receive elasticity
The vibration signal of ripple shot point, signal is transmitted to data recordin module upwards, for speculating take-off time, shorten data record
Time, reduce data file and taken up space.
Preferably, the elastic wave data reception module uses a kind of quality test of pile.
Preferably, the elastic wave data recordin module includes seismic detector, computer, and seismic detector is by each type sensor
The analog signal of transmission carries out digital-to-analogue conversion, and transmits to computer for further handling record；Computer receives number
Word signal, the data record time is adjusted with reference to the excitation signal that elastic wave transmitter module uploads, form data file, and preserve
To corresponding document position.
Preferably, the waveform noise filtering module includes：
Bandpass filtering modules block, it is used to weakening influence of all kinds of regular noises of engineering site to the quality of data, during use
Higher cutoff frequency, low cut-off frequency, window fringing length can be configured, design parameter should be according to field condition and engineering
Experience adjustments, such as low-frequency noise caused by large-scale construction equipment operating, low-frequency noise caused by vehicle travels, ground are excavated
Or high-frequency noise caused by structural demolition, and other common noises；
Waveform correction module, it is used to remove the Height Anomalies model that bandpass filtering modules block can not be corrected；For sensor
Height Anomalies waveform caused by irregular working, stratigraphic anormaly etc., can not be abated the noise by way of bandpass filtering, can be made
Handled one by one with waveform correction module；The elastic wave data of time domain where suppressing exception waveform first, then using the side of interpolation
Method supplements the elastic wave data of the time domain, and for permutation Wave anomaly, the waveform corrected can be generated according to adjacent measuring point data
Data.
The present invention also provides a kind of underground unfavorable geology survey data capturing analysis method, and it comprises the following steps：
Step 1, on-site data gathering and record, Wave data are preserved in plain text with ASCII character
Step 2, the arrangement and transmission of data, data format is checked to ensure data processor energy trouble-free operation；
Step 3, bandpass filter parameter, including higher cutoff frequency, low cut-off frequency, window fringing length, parameter are set
It should be determined according to field condition and engineering experience；
Step 4, bandpass filter is run, preserve Wave data file again, Wave data is preserved in plain text with ASCII character；
Step 5, check Wave data validity, include whether to retain effective information and waveform whether distortion, data have
Effect then goes to step six, and the universal distortion of data then goes to step three；
Step 6, Height Anomalies waveform is checked for, read the sensor Taoist monastic name of unusual waveforms, initial time and end
The only time；
Step 7, delete Height Anomalies waveform；
Step 8, waveform modification template is selected, run waveform modification module；
Whether step 9, decision height unusual waveforms are all corrected, and are to go to step ten, are not to go to step six；
Step 10, read borehole formation information, including each depth of stratum in drilling location, thickness, the direct wave velocity of wave；
Step 11, calculate the theoretical value of drilling depth measuring point Mintrop wave take-off delay；
Step 12, according to hydrophones coordinate, the elastic wave waveform collected is deducted this time delay, formed
Zero take-off delay waveform；
Step 13, zero take-off delay waveform after processing is arranged according to depth, form waveform arrangement, preserve number again
According to file, preserved in plain text with ASCII character；
Step 14, reads each road amplitude of wave form maximum, and the Wave data that processing is obtained respectively is converted to peak value as 1
Waveform, according to residing for measuring point depth formed waveform arrangement；
Step 15, the waveform is arranged to the bitmap images that is converted to computer and can identify；
Step 10 six, identify underground unfavorable geologic body locus.
Preferably, the step 10 six comprises the following steps：
Step 2 ten, survey condition is set, exploration boring aperture should not be too small, and water is full of in hole, and drill peripheral ground
It is smooth closely knit；
Step 2 11, wave detector is set, and using velocity profile hydrophones, intrinsic frequency 100Hz, needs to protect during detection
Hold wave detector and drilling reclaimed water fully couples；
Step 2 12, measuring instrument is set, measuring instrument can be any digital seismograph, 24 moulds or several turns
The digital recorder of parallel operation and the high cut-off frequency of more than 5kHz, various universal seismographs；
Step 2 13, excitation device is set, combined by weight and acceleration type exciter；
Step 2 14, waveform processing, according to stratum borehole data, obtain the borehole formation depth, thickness, direct wave ripple
The information such as speed are right so as to which the theoretical value of different depth measuring point Mintrop wave take-off delay be calculated, and according to hydrophones coordinate
The elastic wave waveform collected deducts this time delay, forms zero take-off delay waveform.
The positive effect of the present invention is：The present invention can be according to field test achievement, and considers to implement difficulty or ease journey
Degree and engineering cost, develop data acquisition and analysis method pair in the underground unfavorable geology exploratory hole based on elastic wave theory
The spatial distribution of underground unfavorable geologic body is surveyed, and achievement in research provides a kind of cost for underground unfavorable geology surveying engineering
Low, quick and easy, accurately survey system and method, solve the deficiencies in the prior art.
Brief description of the drawings
Fig. 1 is that the underground unfavorable geology exploration data acquisition system theoretical based on elastic wave image provided by the present invention shows
It is intended to；
Fig. 2 is the design sketch of the present invention.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
Unfavorable geology survey data acquisition analysis system in underground of the present invention includes：
Elastic wave data collecting system, it is used to carry out elastic wave testing in hole in engineering site, so has and actively swashs
Elastic wave field is sent out, more more stratum elastic wave signals of depth receive, the function of digital-to-analogue conversion and data record；
Waveform processing module, its elastic wave data to different depth measuring point carries out bandpass filtering, effective waveform selects place
Reason, according to stratum borehole data, calculates each depth waveform Mintrop wave take-off time delay, is converted to each take-off of depth zero delay ripple
Shape；
Waveform image modular converter, it is used to handling obtained elastic wave waveform and is converted to image, bad under reservation
The wave character of geologic body, identify underground unfavorable geologic body locus；With fuzzy mathematics theory, computer is greatly reduced
Calculation resources consume, and the file type of output is available for a variety of post processors to use；
Wherein：
Elastic wave data collecting system includes elastic wave transmitter module, elastic wave data reception module, elastic wave data note
Module is recorded, wherein：
Elastic wave transmitter module is connected with elastic wave data recordin module, and it is used to excite elastic wave ripple in drilling orifice
, energy intensity can be changed as needed；
Elastic wave data reception module is connected with elastic wave data recordin module, and it is used to receiving more depth in drilling more
The elastic wave signal on stratum, and the elastic wave data that each sensor of real-time Transmission receives；
Elastic wave data recordin module is used to carry out the elastic wave data that receive digital-to-analogue conversion, and according to presetting
Parameter record data in a hard disk；
The waveform processing module includes waveform noise filtering module, take-off delay correction module, wherein：
Waveform noise filtering module, its waveform for recording to obtain to elastic wave data collecting system pre-process, filtering
Common noise in the unfavorable geology exploration engineering of underground, ensure the quality of data, improve the bad construction surveying accuracy in underground；
Take-off delay correction module, it is used to calculate each depth waveform Mintrop wave take-off time delay, is converted to each depth
Zero take-off delay waveform, elastic wave wavy profile data are obtained after arrangement, after waveform noise filtering module receives pre-treatment
Waveform, and input formation condition and calculated and rectified a deviation.
A high-precision acceleration transducer is provided with the elastic wave transmitter module, it is used to receive elastic wave shot point
Vibration signal, signal is transmitted to data recordin module upwards, for speculate take-off time, shorten the data record time, subtract
Small data file is taken up space.
The elastic wave data reception module uses a kind of quality test of pile, and the excellent frequency of quality test of pile is
100Hz, full water-proofing treatment, and can continuously be worked more than 4 hours in 100 meters of deep water pressure environment, 12 velocity profile sensings
Device is one group, is distributed at a distance of 0.5 linear meter, is connected using 24 core shielding lines, and data wire has pull rope effect concurrently, can be as needed
Sunk in data reception module lower end carry weight with facilitating in different component muddy water.
The elastic wave data recordin module includes seismic detector, computer, seismic detector each type sensor is transmitted and
The analog signal come carries out digital-to-analogue conversion, and transmits to computer for further handling record；Computer receives data signal,
The data record time is adjusted with reference to the excitation signal that elastic wave transmitter module uploads, forms data file, and preserve to corresponding
Document location.
The waveform noise filtering module includes：
Bandpass filtering modules block, it is used to weakening influence of all kinds of regular noises of engineering site to the quality of data, during use
Higher cutoff frequency, low cut-off frequency, window fringing length can be configured, design parameter should be according to field condition and engineering
Experience adjustments, such as low-frequency noise caused by large-scale construction equipment operating, low-frequency noise caused by vehicle travels, ground are excavated
Or high-frequency noise caused by structural demolition, and other common noises；
Waveform correction module, it is used to remove the Height Anomalies model that bandpass filtering modules block can not be corrected；For sensor
Height Anomalies waveform caused by irregular working, stratigraphic anormaly etc., can not be abated the noise by way of bandpass filtering, can be made
Handled one by one with waveform correction module；The elastic wave data of time domain where suppressing exception waveform first, then using the side of interpolation
Method supplements the elastic wave data of the time domain, and for permutation Wave anomaly, the waveform corrected can be generated according to adjacent measuring point data
Data.
Unfavorable geology survey data capturing analysis method in underground of the present invention comprises the following steps：
Step 1, on-site data gathering and record, Wave data are preserved in plain text with ASCII character
Step 2, the arrangement and transmission of data, data format is checked to ensure data processor energy trouble-free operation；
Step 3, bandpass filter parameter, including higher cutoff frequency, low cut-off frequency, window fringing length, parameter are set
It should be determined according to field condition and engineering experience；
Step 4, bandpass filter is run, preserve Wave data file again, Wave data is preserved in plain text with ASCII character；
Step 5, check Wave data validity, include whether to retain effective information and waveform whether distortion, data have
Effect then goes to step six, and the universal distortion of data then goes to step three；
Step 6, Height Anomalies waveform is checked for, read the sensor Taoist monastic name of unusual waveforms, initial time and end
The only time；
Step 7, delete Height Anomalies waveform；
Step 8, waveform modification template is selected, run waveform modification module；
Whether step 9, decision height unusual waveforms are all corrected, and are to go to step ten, are not to go to step six；
Step 10, read borehole formation information, including each depth of stratum in drilling location, thickness, the direct wave velocity of wave；
Step 11, calculate the theoretical value of drilling depth measuring point Mintrop wave take-off delay；
Step 12, according to hydrophones coordinate, the elastic wave waveform collected is deducted this time delay, formed
Zero take-off delay waveform；
Step 13, zero take-off delay waveform after processing is arranged according to depth, form waveform arrangement, preserve number again
According to file, with ASCII, (American Standard Code for Information Interchange, U.S. information are handed over
Change standard code) code preservation in plain text；
Step 14, reads each road amplitude of wave form maximum, and the Wave data that processing is obtained respectively is converted to peak value as 1
Waveform, according to residing for measuring point depth formed waveform arrangement；
Step 15, the waveform is arranged to the bitmap images that is converted to computer and can identify；
Step 10 six, identify underground unfavorable geologic body locus.
The step 10 six comprises the following steps：
Step 2 ten, survey condition is set, exploration boring aperture should not be too small, and water is full of in hole, and drill peripheral ground
It is smooth closely knit；
Step 2 11, wave detector are set, and using velocity profile hydrophones 1 (as shown in Figure 1), intrinsic frequency is
100Hz (hertz), wave detector and drilling reclaimed water need to be kept fully to couple during detection；
Step 2 12, measuring instrument is set, and measuring instrument can be any digital seismograph 2,24 moulds or numbers
The digital recorder of converter and the high cut-off frequency of more than 5kHz (KHz), various universal seismographs；
Step 2 13, excitation device is set, combined by weight and acceleration type exciter；
Step 2 14, waveform processing, according to stratum borehole data, obtain the borehole formation depth, thickness, direct wave ripple
The information such as speed are right so as to which the theoretical value of different depth measuring point Mintrop wave take-off delay be calculated, and according to hydrophones coordinate
The elastic wave waveform collected deducts this time delay, forms zero take-off delay waveform.The effect of the present invention is as shown in Figure 2.
Particular embodiments described above, technical problem, technical scheme and the beneficial effect of the solution to the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., it should be included in this
Within the protection domain of invention.
Claims (7)
1. a kind of underground unfavorable geology survey data acquisition analysis system, it is characterised in that it includes：
Elastic wave data collecting system, it is used to carry out elastic wave testing in hole in engineering site, so has and actively excites bullet
Property wave field, the more stratum elastic wave signals of more depth receive, the function of digital-to-analogue conversion and data record；
Waveform processing module, its elastic wave data to different depth measuring point carries out bandpass filtering, effective waveform selects processing, root
According to earth-boring data, each depth waveform Mintrop wave take-off time delay is calculated, is converted to each take-off delay waveform of depth zero；
Waveform image modular converter, it is used to handling obtained elastic wave waveform and is converted to image, unfavorable geology under reservation
The wave character of body, identify underground unfavorable geologic body locus；With fuzzy mathematics theory, Computing is greatly reduced
Resource consumption, the file type of output use for a variety of post processors；
Wherein：
Elastic wave data collecting system includes elastic wave transmitter module, elastic wave data reception module, elastic wave data record mould
Block, wherein：
Elastic wave transmitter module is connected with elastic wave data recordin module, and it is used to excite elastic wave field, root in drilling orifice
According to need change energy intensity；
Elastic wave data reception module is connected with elastic wave data recordin module, and it is used to receive the more stratum of more depth in drilling
Elastic wave signal, and elastic wave data that each sensor of real-time Transmission receives；
Elastic wave data recordin module is used to carry out digital-to-analogue conversion to the elastic wave data received, and according to ginseng set in advance
Number is recorded data in a hard disk；
The waveform processing module includes waveform noise filtering module, take-off delay correction module, wherein：
Waveform noise filtering module, its waveform for recording to obtain to elastic wave data collecting system pre-process, and filter underground
Common noise in unfavorable geology exploration engineering, ensure the quality of data, improve the bad construction surveying accuracy in underground；
Take-off delay correction module, it is used to calculate each depth waveform Mintrop wave take-off time delay, is converted to each depth zero and rises
Delay waveform is jumped, elastic wave wavy profile data are obtained after arrangement, the waveform after pre-treatment is received from waveform noise filtering module,
And input formation condition and calculated and rectified a deviation.
2. unfavorable geology survey data acquisition analysis system in underground as claimed in claim 1, it is characterised in that the elastic wave
A high-precision acceleration transducer is provided with transmitter module, it is used for the vibration signal for receiving elastic wave shot point, by signal
Transmit upwards to data recordin module, for speculating take-off time, shorten the data record time, reduce data file institute duty
Between.
3. unfavorable geology survey data acquisition analysis system in underground as claimed in claim 1, it is characterised in that the elastic wave
Data reception module uses a kind of quality test of pile.
4. unfavorable geology survey data acquisition analysis system in underground as claimed in claim 1, it is characterised in that the elastic wave
Data recordin module includes seismic detector, computer, and the analog signal that each type sensor transmits is entered line number by seismic detector
Mould is changed, and is transmitted to computer for further handling record；Computer receives data signal, with reference to elastic wave transmitter module
The excitation signal of upload adjusts the data record time, forms data file, and preserve to corresponding document position.
5. unfavorable geology survey data acquisition analysis system in underground as claimed in claim 1, it is characterised in that the waveform is made an uproar
Sound filtering module includes：
Bandpass filtering modules block, it is used to weakening influence of all kinds of regular noises of engineering site to the quality of data, to height during use
Cut-off frequency, low cut-off frequency, window fringing length are configured, and design parameter should be adjusted according to field condition and engineering experience
It is whole；
Waveform correction module, it is used to remove the Height Anomalies model that bandpass filtering modules block can not be corrected；For sensor not just
Often Height Anomalies waveform caused by work, stratigraphic anormaly, can not be abated the noise by way of bandpass filtering, be rectified a deviation using waveform
Module is handled one by one；The elastic wave data of time domain where suppressing exception waveform first, when then supplementing this using the method for interpolation
The elastic wave data in domain, for permutation Wave anomaly, the Wave data corrected is generated according to adjacent measuring point data.
6. a kind of underground unfavorable geology survey data capturing analysis method, it is characterised in that it comprises the following steps：
Step 1, on-site data gathering and record, Wave data are preserved in plain text with ASCII character
Step 2, the arrangement and transmission of data, data format is checked to ensure data processor energy trouble-free operation；
Step 3, bandpass filter parameter, including higher cutoff frequency, low cut-off frequency, window fringing length, parameter is set to answer root
Determined according to field condition and engineering experience；
Step 4, bandpass filter is run, preserve Wave data file again, Wave data is preserved in plain text with ASCII character；
Step 5, check Wave data validity, include whether to retain effective information and waveform whether distortion, data are effectively then
Six are gone to step, the universal distortion of data then goes to step three；
Step 6, Height Anomalies waveform is checked for, when reading the sensor Taoist monastic name of unusual waveforms, initial time and termination
Between；
Step 7, delete Height Anomalies waveform；
Step 8, waveform modification template is selected, run waveform modification module；
Whether step 9, decision height unusual waveforms are all corrected, and are to go to step ten, are not to go to step six；
Step 10, read borehole formation information, including each depth of stratum in drilling location, thickness, the direct wave velocity of wave；
Step 11, calculate the theoretical value of drilling depth measuring point Mintrop wave take-off delay；
Step 12, according to hydrophones coordinate, the elastic wave waveform collected is deducted this time delay, form zero
Jump delay waveform；
Step 13, zero take-off delay waveform after processing is arranged according to depth, form waveform arrangement, preserve data text again
Part, preserved in plain text with ASCII character；
Step 14, reads each road amplitude of wave form maximum, and the Wave data that processing is obtained respectively is converted to the ripple that peak value is 1
Shape, the depth according to residing for measuring point form waveform arrangement；
Step 15, the waveform is arranged to the bitmap images that is converted to computer and can identify；
Step 10 six, identify underground unfavorable geologic body locus.
7. unfavorable geology survey data capturing analysis method in underground as claimed in claim 6, it is characterised in that the step 10
Six comprise the following steps：
Step 2 ten, survey condition is set, and exploration boring aperture should not be too small, and water is full of in hole, and drilling peripheral ground is smooth
It is closely knit；
Step 2 11, wave detector is set, and using velocity profile hydrophones, intrinsic frequency 100Hz, need to keep examining during detection
Ripple device and drilling reclaimed water fully couple；
Step 2 12, measuring instrument is set, measuring instrument is any digital seismograph, 24 moulds or number converter and
The digital recorder of the high cut-off frequency of more than 5kHz, various universal seismographs；
Step 2 13, excitation device is set, combined by weight and acceleration type exciter；
Step 2 14, waveform processing, according to stratum borehole data, obtain the borehole formation depth, thickness, direct wave velocity of wave letter
Breath, so as to which the theoretical value of different depth measuring point Mintrop wave take-off delay be calculated, and according to hydrophones coordinate, to collecting
Elastic wave waveform deduct this time delay, formed zero take-off delay waveform.
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| CN111610094A (en) * | 2020-05-29 | 2020-09-01 | 西南交通大学 | Model test device and test method for high-speed railway roadbed passing karez |
| CN112130207A (en) * | 2020-09-25 | 2020-12-25 | 中国科学院武汉岩土力学研究所 | Method for calculating underground vibration from ground vibration based on spherical charging condition |
| CN112711861A (en) * | 2021-01-15 | 2021-04-27 | 青岛海洋地质研究所 | Method for determining high-resolution dragging type shallow-profile multiple takeoff time |
| CN113356837A (en) * | 2021-05-31 | 2021-09-07 | 中铁第四勘察设计院集团有限公司 | Acquisition method, device, equipment and storage medium |
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| CN111610094A (en) * | 2020-05-29 | 2020-09-01 | 西南交通大学 | Model test device and test method for high-speed railway roadbed passing karez |
| CN112130207A (en) * | 2020-09-25 | 2020-12-25 | 中国科学院武汉岩土力学研究所 | Method for calculating underground vibration from ground vibration based on spherical charging condition |
| CN112130207B (en) * | 2020-09-25 | 2021-07-20 | 中国科学院武汉岩土力学研究所 | Method for calculating underground vibration from ground vibration based on spherical charging condition |
| CN112711861A (en) * | 2021-01-15 | 2021-04-27 | 青岛海洋地质研究所 | Method for determining high-resolution dragging type shallow-profile multiple takeoff time |
| CN112711861B (en) * | 2021-01-15 | 2022-05-17 | 青岛海洋地质研究所 | Method for determining high-resolution dragging type shallow-profile multiple takeoff time |
| CN113356837A (en) * | 2021-05-31 | 2021-09-07 | 中铁第四勘察设计院集团有限公司 | Acquisition method, device, equipment and storage medium |
| CN113356837B (en) * | 2021-05-31 | 2023-10-03 | 中铁第四勘察设计院集团有限公司 | Acquisition method, device, equipment and storage medium |
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