CN108303732A - A kind of Artificial Seismic Wave automatic monitoring system - Google Patents
A kind of Artificial Seismic Wave automatic monitoring system Download PDFInfo
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- CN108303732A CN108303732A CN201810339458.8A CN201810339458A CN108303732A CN 108303732 A CN108303732 A CN 108303732A CN 201810339458 A CN201810339458 A CN 201810339458A CN 108303732 A CN108303732 A CN 108303732A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
- G01V1/184—Multi-component geophones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/223—Radioseismic systems
Abstract
The present invention provides a kind of Artificial Seismic Wave automatic monitoring systems, including three-component geophone, synchronous communication device, signal wire and host.The operating process of system includes opening the to be collected, faces such as host, setting acquisition parameter, activation system to blow out driving, triggering collection, data acquisition storage, data transmission sum number it is investigated that eight steps are seen, to realize advance geologic prediction.The advantage of the invention is that：It realizes that collection site is unmanned, avoids the risk of operation under collector's adverse circumstances；Data acquisition is automatic trigger, and wave detector need not be connected by copper conductor with explosive cartridge, and each face explosion can be with automatic collection；Sampling operation is easy to operate, easy for construction, is not necessarily to special geologic prediction worker, can skillfully grasp.The composite can be widely applied to traffic, water conservancy, mine industry underground cavern excavation unfavorable geologic body advance geologic prediction.
Description
Technical field
The present invention relates to a kind of automatic monitoring system of Artificial Seismic Wave, further relate to a kind of in tunnel when drill bursting construction
Face blows out the automatic monitoring system of the Artificial Seismic Wave of generation.
Background technology
21st century is the epoch in tunnel and underground space great development, with the expansion of Tunnel Engineering length and scale,
Its complex geologic conditions encountered and variability are also aggravating.Early period, detection means dynamics deficiency can give safety for tunnel engineering band
Carry out larger threat, often will appear unexpected water burst, landslide, prominent mud, gushes the accidents such as sand.Therefore, advanced in the construction time
Geologic prediction technology, found the abnormal situation in time, forecast occurrence, position and its surrounding rock structure of front of tunnel heading unfavorable geologic body
Integrality and aqueous prominent mud possibility, apply for reasonable comparison and choice, correct construction method, support parameters and optimization
Work scheme provides foundation.At present both at home and abroad have artificial earthquake method geologic prediction compared with systematic research, but in following several respects
There is also deficiencies：
(1) sensor arrangement
Sensor in advance geologic prediction is used to receive the Artificial Seismic Wave and its back wave of excitation.Currently, both at home and abroad
Most common method is TSP (the Tunnel Seismic Prediction) series that Switzerland Amberg Technologies are proposed
With TGP (Tunnel Geological Prediction) serial equipment of domestic Beijing's water power physical prospecting Research Institute, this
The sensor of two kinds of equipment is usually two, is arranged in the left and right sides drilling of tunnel wall.Two sensors are individually remembered
Seismic wave is recorded, forecast result is provided and is mutually authenticated.But opposite conclusion is often provided in two sensors of actual application, it is right
User causes larger interference.
(2) synchronizing signal triggering mode
The pickup of TGP equipment excitation synchronizing signal is the method blown up using the loop line that clocks, i.e., by emulsion loop line
Winding blows up electric wire excitation acquisition using explosive, and TSP equipment is started by the way of the acquisition of exploder pulse-triggered instrument
Quick-fried device is that system starts timing acquisition.However the time that 1~2ms is often had when exciting detonator and explosive to blow up conducting wire prolongs
Late, it cannot accomplish accurately to trigger, cause the distance of forecast that can have large error.
There is a kind of blown out with face to be disclosed for the geological extra-forecast method and device of focus through retrieval, patent
Application No. is：CN201310124601.9, technical solution are during sensor arrangement drills in the both sides of tunnel wall, to trigger back
Road copper conductor, which is wrapped on explosive cartridge, to be put into face blasthole, and face blows out that blow up copper conductor trigger signal acquisition and recording quick-fried
Fried time point.
Invention content
The technical problem to be solved in the present invention is, for above-mentioned current artificial earthquake method geologic prediction accuracy not
Good technological deficiency provides a kind of Artificial Seismic Wave automatic monitoring system to solve the above problems.
The present invention is to solve its technical problem, provides a kind of Artificial Seismic Wave automatic monitoring system, which is characterized in that packet
Three-component geophone 3, synchronous communication device 10, signal wire 9 and host 11 is included to form；
The three-component geophone 3 is embedded in the drilling 2 opened up on same side wall 4 in cavern 1, drilling 2 and cavern 1
Bottom plate is parallel and vertical with the trend of cavern 1；
The three-component geophone 3 is set to cavern in the drilling of side wall, the x, y, z component direction of three-component geophone
Position relation with tunnel is：X-component direction is consistent with tunnel axis direction and is directed toward face direction, and the direction of y-component exists
Vertical with tunnel axis on horizontal plane, the direction of z-component is vertical with tunnel axis on vertical guide；Pass through butter couplant and brill
Hole is close to connect, good coupling；It is connected by signal wire 9 between three-component geophone；Synchronous communication device 10 by signal wire 9 with
Three-component geophone is connected, and host 11 is connect with synchronous communication device 10 by wired or wireless mode.
Further, the three-component geophone 3 is a kind of intelligent three-component geophone of Highgrade integration, therein
Automatic collection, digital-to-analogue conversion, data storage, data transmission, independently-powered function may be implemented in three component sensor in sampling.
Further, three-component geophone 3 is buried into drilling 2, first inside drilling 2 filling butter as three-component inspection
The couplant of wave device 3 and drilling 2 adjusts the position of three-component geophone 3, makes the x-component direction and tunnel of three-component geophone 3
Axis direction is consistent and is directed toward face direction, and the direction of y-component is vertical with tunnel axis in the horizontal plane, the direction of z-component
Vertical with tunnel axis on vertical guide, firmly pressing makes three-component geophone 3 be close to be connected with drilling 2, butter loading
To ensure that three-component geophone 3 is close to tight with drilling 2, full of drilling 2.
Further, by data transmission system each component parameters and publication instruction is arranged, and show, record in host 11
Data are arranged proprietary data processor and carry out analyzing processing to the data of acquisition.
A kind of application method of Artificial Seismic Wave automatic monitoring system, for monitoring dress automatically to the Artificial Seismic Wave
It sets and is used, which is characterized in that include：
S1, host 11 carry out Initialize installation to each serial ports；
S2, data acquisition parameters are set by host 11, operator is soft with the system operatio of data analysis system in control
Acquisition parameter is set in part, including sampling length, sample rate, sampling trigger condition, software will automatically save set parameter simultaneously
As default parameter, control sends acquisition parameter to data collecting system, number with data analysis system by mobile communications network
It is configured acquisition parameter according to the processor in acquisition system；
S3, activation system wait for triggering collection, control to be sent to data by mobile communications network with data analysis system
Acquisition system, processor opens trigger port in data collecting system, is ready to be adopted according to the parameter pre-set
Collection, and provisioning information is returned to system operating software, prompt operator to be ready for finishing；
S4, tunnel tunnel face 5 tunnel the first gun excitation of big gun, generate Artificial Seismic Wave 6, and the Artificial Seismic Wave 6 of generation is being slapped
Side propagates in face of son, and lithology changes, and Artificial Seismic Wave generates reflection in geological interface 8, forms reflection seismic waves 7, three-component inspection
Wave device 3 receives reflection seismic waves signal 7；
S5, triggering collection, when the signal strength that three-component geophone 3 receives reaches setting value, three-component geophone 3
Start to be acquired according to the sample rate and sampling length that are set in advance；
Data are saved as local file by S6, three-component geophone 3 according to preset format；
After S7, acquisition and preservation finish current data, three-component geophone 3 is passed data to by signal wire is placed in hole
Data are transmitted to the terminals such as computer or the mobile phone of distal end by mobile communications network by the synchronous communication device 10 of mouth, synchronous communication device 10
Equipment, and shown on computer or mobile phone terminal in graph form；
S8,11 monitoring data data of host, by preset data processor, the recorded data of analysis also may be used
With the historical data of comparison software downloading data acquisition system, final result data are exported, operator is made to analyze the data of data,
Acquisition next time is judged, predicts 5 front geological condition of face.
Further, it when face 5 blows out driving each time, is all once acquired and is received, realized and earthquake is remembered
The uninterrupted automatic collection of record.
Further, the data collecting system triggering collection operating mode described in step S5 is when sensor signal input reaches
When to setting value, data acquisition channel starts to start to acquire according to sample rate is set in advance, and acquisition length is according to actual test need
It asks and is set, the data of acquisition are stored in certain format in the memory module of three-component geophone.
The advantage of the invention is that：Correlation acquisition parameter and acquisition side can be arranged by external unit in wave detector before acquisition
Formula, smart detectors device off-line working realize that collection site is unmanned, avoid the wind of operation under collector's adverse circumstances
Danger.Data acquisition is automatic trigger, and wave detector need not be connected by copper conductor with explosive cartridge, and each face explosion can be with
Automatic collection.Parameter setting, data acquisition transmission wirelessly carry out, and keep sampling operation easy to operate, easy for construction, nothing
Special geologic prediction worker is needed, can skillfully be grasped.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is a kind of Artificial Seismic Wave automatic monitoring system schematic diagram of the present invention；
Fig. 2 is a kind of Artificial Seismic Wave automatic monitoring system schematic cross-section of the present invention；
Fig. 3 is a kind of data acquisition flow figure of Artificial Seismic Wave automatic monitoring method of the present invention.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
The specific implementation mode of the present invention.
As shown in Figure 1 and Figure 2, a kind of geological extra-forecast method, step are：
(1) with a drilling 2 is played on side wall 4 in tunnel 1, drilling 2 is parallel with cavern's bottom plate vertical with cavern's trend, bores
5~10m of pitch of holes is 1.5m, aperture 6cm, deep 2m away from cavern's floor level；
(2) appropriate butter is placed as couplant, by a kind of intelligent three component geophone of Highgrade integration in 2 bottoms that drill
Device 3 is embedded in the bottom of drilling 2, adjusts the position of three-component geophone 3, makes the component water in the direction x, y of three-component geophone 3
Placing flat, x-component direction is consistent with tunnel axis direction and is directed toward face direction, the direction of y-component in the horizontal plane with tunnel
Road axis is vertical, and the direction of z-component is vertical with tunnel axis on vertical guide.
(3) three-component geophone 3 is firmly pressed, the butter in drilling 2 is expressed to three-component geophone 3 and drilling 2
In gap, couplant can increase and decrease according to actual conditions, it is ensured that three-component geophone 3 with drilling 2 is close, firm is fitted in one
It rises.
(4) artificial earthquake method geologic prediction device is switched on, and what data acquisition flow figure according to Fig.3, was acquired sets
Work is set, specifically：Corresponding acquisition parameter is set after booting, activation system etc. is to be triggered, preparation for acquiring signal；
(5) tunnel tunnel face 5 tunnels the first gun excitation of big gun, generates Artificial Seismic Wave 6, and the Artificial Seismic Wave 6 of generation is being slapped
Side propagates in face of son, and lithology changes, and Artificial Seismic Wave generates reflection in geological interface 8, forms reflection seismic waves 7；
(6) three-component geophone 3 receives reflection seismic waves signal 7；
(7) when the signal strength that three-component geophone receives reaches setting value, three-component geophone starts according to carrying
The sample rate and sampling length of preceding setting are acquired, and data are saved as local file according to the format of regulation；
(8) after acquiring and preserving and finish current data, wave detector is passed data to by signal wire 9 and is placed in the same of hole
Communicator 10 is walked, data are transmitted to the terminal devices such as computer or the mobile phone of distal end by mobile communications network by synchronous communication device 10,
And it is shown in the terminals such as computer in graph form；
(9) when face 5 blows out driving next time, acquire and receive next time, realize to earthquake record not
It is interrupted automatic collection；
(10) by installed data processor in host 11, recorded data are analyzed, are predicted
5 front geological condition of face realizes artificial earthquake method geologic prediction.
A kind of Artificial Seismic Wave automatic monitoring system is designed, it includes three parts：Three-component geophone 3, synchronous communication
Device 10, signal wire 9 (having shielding character) and host 11 form.
The three-component geophone 3 is embedded in cavern 1 in the drilling 2 of side wall 4, and drilling 2 and the bottom plate of cavern 1 are flat
Row and, drilling depth 2m vertical with the trend of cavern 1, away from cavern floor level 1.5m, a diameter of 6cm.
Burying for three-component geophone 3 be into 2 method of drilling：Butter is first filled inside drilling 2 as three component geophone
The couplant of device 3 and drilling 2 adjusts the position of three-component geophone 3, makes the x, y, z component direction and tunnel of three-component geophone 3
The position relation in road is：X-component direction is consistent with tunnel axis direction and is directed toward face direction, and the direction of y-component is in level
Vertical with tunnel axis on face, the direction of z-component is vertical with tunnel axis on vertical guide, and firmly pressing is so that three component geophone
Device 3 is connected (being close to) with drilling 2, and butter loading is to ensure that three-component geophone 3 is close to tight with drilling 2, full of drilling 2
It is advisable.
The three-component geophone 3 is set to cavern 1 in the drilling of side wall, is connected with drilling by butter couplant
(being close to), good coupling.The three-component geophone 3 is connected by signal wire 9；Synchronous communication device 10 passes through interface and three points
Wave detector 3 is measured to be connected.
The three-component geophone 3 is connected by signal wire 9, and synchronous communication device 10 is examined by signal wire 10 and three-component
Wave device 3 is connected.
The three-component geophone 3 is a kind of intelligent three-component geophone of Highgrade integration, the three component sensor
The functions such as automatic collection, digital-to-analogue conversion, data storage, data transmission, independently-powered may be implemented in sampling.
In conjunction with the data acquisition flow of Fig. 3, to a kind of operating method of Artificial Seismic Wave automatic monitoring system of the present invention
It is described further：
S1, host 11 is opened, Initialize installation is carried out to each serial ports；
S2, data acquisition parameters are set by host 11, operator is soft with the system operatio of data analysis system in control
Acquisition parameter is set in part, including sampling length, sample rate, sampling trigger condition, software will automatically save set parameter simultaneously
As default parameter, control sends acquisition parameter to data collecting system, number with data analysis system by mobile communications network
It is configured acquisition parameter according to the processor in acquisition system；
S3, activation system wait for triggering collection, operator to be opened in controlling the system operating software with data analysis system
Dynamic triggering waits for, then is sent to data collecting system, data acquisition by mobile communications network with data analysis system by control
Processor opens trigger port in system, is ready to be acquired according to the parameter pre-set, and return provisioning information
To system operating software, operator is prompted to be ready for finishing；
S4, tunnel tunnel face 5 tunnel the first gun excitation of big gun, generate Artificial Seismic Wave 6, and the Artificial Seismic Wave 6 of generation is being slapped
Son is square in front to be propagated, and lithology changes, and Artificial Seismic Wave is generated in geological interface 8 to be reflected, formation reflection seismic waves 7, three three points
Amount wave detector 3 is respectively received reflection seismic waves signal 7；
S5, triggering collection, when the signal strength that three-component geophone 3 receives reaches setting value, three-component geophone 3
Start to be acquired according to the sample rate and sampling length that are set in advance；
Data are saved as local file by S6, three-component geophone 3 according to preset format；
After S7, acquisition and preservation finish current data, three-component geophone 3 is passed data to by signal wire 9 and is placed in
Data are transmitted to computer or the mobile phone etc. of distal end by mobile communications network by the synchronous communication device 10 at hole 1, synchronous communication device 10
Terminal device, and shown in the terminals such as computer in graph form；
S8, monitoring data data analyze recorded data by preset data processor in host 11,
Operator can be made to analyze the data of data by the historical data of comparison software downloading data acquisition system, next time is acquired
It judges, predicts 5 front geological condition of face.
The three-component geophone triggering collection operating mode is threshold triggers pattern, i.e., when three-component geophone is any
The signal input of component acquisition is when reaching setting value, and data acquisition channel starts to start to acquire according to sample rate is set in advance, and adopts
Collection length is set according to actual test demand, and the data of acquisition are stored in the storage of three-component geophone with certain format
In module.It is 0.1V that activation threshold value, which is such as arranged, then when the signal input of any component acquisition of three-component geophone reaches 0.1V,
Triggering system will preserve data according to setting.
Data acquisition module in the three-component geophone begins to acquire after system initialization startup, at this time
In the data deposit caching of acquisition, when signal strength reaches setting value, the data of acquisition are stored in three with certain format
In the memory module of component wave detector.
The sample rate setting is generally 20KHz (i.e. sampling interval 0.05ms), samples duration 200ms, i.e., counts together
It is to have three track datas, 12000 data points according to having 4000 data points, three-component geophone.So often acquiring primary storage
Contain trace header data, one of gain data and three channel amplitude data in file.
The data acquisition is negative delayed mode, you can stores the data before trigger point.Sampling length is such as set
For 4000 data points, it is 2000 to bear delay point, then the data before preceding 2000 points of a partial data are trigger point,
2000 points are the data after triggering moment afterwards.
The mode that the data acquisition control and data transmission is all made of " wireless outside wired in hole+hole " carries out, host
11, by data transmission system, are arranged each component parameters and publication instruction, and show, record data.Proprietary data processing journey
The data of ordered pair acquisition carry out analyzing processing.Specific implementation is as follows：Data acquisition control is led on the background computer of distal end
Control software progress is crossed, various acquisition parameter information commands are sent to the synchronous communication device at hole, synchronous communication by internet
Device is sent to wave detector by the signal wire in hole again.Data transmission is sent to hole using the exchange illuminating line (380V) in hole
The synchronous communication device of mouth, gathered data is uploaded to particular server by mobile communications network for synchronous communication device or high in the clouds takes
Business device.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (7)
1. a kind of Artificial Seismic Wave automatic monitoring system, which is characterized in that including：Three-component geophone (3), synchronous communication device
(10), signal wire (9) and host (11) composition；
The three-component geophone (3) is embedded in the drilling (2) opened up on same side wall (4) in cavern (1), drilling (2) with
The bottom plate of cavern (1) is parallel and vertical with the trend of cavern (1)；
The three-component geophone (3) is set to cavern in the drilling of side wall, the x, y, z component direction of three-component geophone with
The position relation in tunnel is：X-component direction is consistent with tunnel axis direction and is directed toward face direction, and the direction of y-component is in water
Vertical with tunnel axis in plane, the direction of z-component is vertical with tunnel axis on vertical guide；Pass through butter couplant and drilling
It is close to connect, good coupling；It is connected by signal wire (9) between three-component geophone；Synchronous communication device (10) passes through signal wire
(9) it is connected with three-component geophone, host (11) is connect with synchronous communication device (10) by wired or wireless mode.
2. a kind of Artificial Seismic Wave automatic monitoring system according to claim 1, which is characterized in that the three-component inspection
Wave device (3) is a kind of intelligent three-component geophone of Highgrade integration, and three component sensor therein may be implemented in sampling
Automatic collection, digital-to-analogue conversion, data storage, data transmission, independently-powered function.
3. a kind of Artificial Seismic Wave automatic monitoring system according to claim 1, which is characterized in that three-component geophone
(3) bury into drilling (2), first fills coupling of the butter as three-component geophone (3) and drilling (2) inside drilling (2)
Agent, the position of adjustment three-component geophone (3), keeps the x-component direction of three-component geophone (3) consistent with tunnel axis direction simultaneously
Be directed toward face direction, the direction of y-component is vertical with tunnel axis in the horizontal plane, the direction of z-component on vertical guide with tunnel
Road axis is vertical, and firmly pressing is so that three-component geophone (3) is close to be connected with drilling (2), and butter loading is to ensure three points
Amount wave detector (3) is close to tight with drilling (2), full of drilling (2).
4. a kind of Artificial Seismic Wave automatic monitoring system according to claim 1, which is characterized in that host (11) passes through number
According to Transmission system, each component parameters and publication instruction are set, and show, record data, proprietary data processor pair is set
The data of acquisition carry out analyzing processing.
5. a kind of application method of Artificial Seismic Wave automatic monitoring system is used for Artificial Seismic Wave described in claim 1 certainly
Dynamic monitoring device is used, which is characterized in that includes：
S1, host (11) carry out Initialize installation to each serial ports；
S2, data acquisition parameters, system operating software of the operator in control and data analysis system are set by host (11)
Middle setting acquisition parameter, including sampling length, sample rate, sampling trigger condition, software will automatically save set parameter and make
For default parameter, control sends acquisition parameter to data collecting system, data with data analysis system by mobile communications network
Processor in acquisition system is configured acquisition parameter；
S3, activation system wait for triggering collection, control to be sent to data acquisition by mobile communications network with data analysis system
System, processor opens trigger port in data collecting system, is ready to be acquired according to the parameter pre-set, and
Provisioning information is returned to system operating software, operator is prompted to be ready for finishing；
S4, tunnel tunnel face (5) tunnel the first gun excitation of big gun, generate Artificial Seismic Wave (6), and the Artificial Seismic Wave (6) of generation exists
Front of tunnel heading is propagated, and lithology changes, and Artificial Seismic Wave is generated in geological interface (8) to be reflected, formation reflection seismic waves (7), and three
Component wave detector (3) receives reflection seismic waves signal (7)；
S5, triggering collection, when the signal strength that three-component geophone (3) receives reaches setting value, three-component geophone (3)
Start to be acquired according to the sample rate and sampling length that are set in advance；
Data are saved as local file by S6, three-component geophone (3) according to preset format；
After S7, acquisition and preservation finish current data, three-component geophone (3) is passed data to by signal wire is placed in hole
Synchronous communication device (10), synchronous communication device (10) data are transmitted to by mobile communications network computer or mobile phone of distal end etc. eventually
End equipment, and shown on computer or mobile phone terminal in graph form；
S8, host (11) monitoring data data, by preset data processor, the recorded data of analysis can also
The historical data of comparison software downloading data acquisition system exports final result data, and operator is made to analyze the data of data, right
Next time, acquisition judged, and predicted face (5) front geological condition.
6. a kind of Artificial Seismic Wave automatic monitoring system according to claim 5, which is characterized in that when face (5) is every
It when once blowing out driving, is all once acquired and is received, realize the uninterrupted automatic collection to earthquake record.
7. a kind of Artificial Seismic Wave automatic monitoring system according to claim 5, which is characterized in that the number described in step S5
According to acquisition system triggering collection operating mode be when sensor signal input reach setting value when, data acquisition channel start according to
Sample rate is set in advance to start to acquire, acquisition length is set according to actual test demand, and the data of acquisition are with certain lattice
Formula is stored in the memory module of three-component geophone.
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| CN110703314A (en) * | 2019-10-18 | 2020-01-17 | 中国地质大学（北京） | Seismic source excitation device, seismic data acquisition system and method |
| CN112083475A (en) * | 2019-10-18 | 2020-12-15 | 中国地质大学（北京） | Seismic data acquisition method of seismic data acquisition system |
| CN112083475B (en) * | 2019-10-18 | 2021-06-04 | 北方卓越(北京)勘测技术有限公司 | Seismic data acquisition method of seismic data acquisition system |
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