CN206594308U - Three-dimensional tunnel earthquake forward probe system - Google Patents
Three-dimensional tunnel earthquake forward probe system Download PDFInfo
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- CN206594308U CN206594308U CN201621014091.5U CN201621014091U CN206594308U CN 206594308 U CN206594308 U CN 206594308U CN 201621014091 U CN201621014091 U CN 201621014091U CN 206594308 U CN206594308 U CN 206594308U
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Abstract
The utility model provides a kind of three-dimensional tunnel earthquake forward probe system, it is characterised in that：It includes：It is arranged in tunnel tunnel face edge and is evenly arranged multiple shot points；It is arranged in 1 shot point at face center；It is evenly arranged in multiple receiving points in the midpoint trajectory of tunnel tunnel face margin and center position；Each shot point is electrically connected with receiving point with digital seismograph；Digital seismograph is electrically connected with seismic data analysis processor.The purpose of this utility model aiming at prior art defect there is provided a kind of three-dimensional tunnel earthquake forward probe system, effectively obtain the 3-D seismics reflected waveform data of front of tunnel heading, and reach by data processing the purpose of analysis front of tunnel heading geologic anomaly.
Description
Technical field
The advance geologic prediction that the utility model belongs in geophysical exploration, and in particular to a kind of three-dimensional tunnel earthquake surpasses
Preceding detection system.
Background technology
The Geological Prediction Technology of existing tunnel (tunnel) mainly includes face vegetarian noodles method, probing method and geophysics
The class of prospecting three, wherein geophysical exploration method are because its cost is low, efficiency high the features such as be widely used and write tunnel and apply
In work related specifications.In geophysical exploration technology, seismic reflectuon seismic noise due to its place adaptability, detection range and effectively
Property can preferably meet engineering actual demand, as an essential job in conventional advance geologic prediction, seismic reflection
There is the difference of two and three dimensions exploration engineering again in the subdivision of ripple method Geological Prediction Technology.
In two-dimension earthquake reflective wave method Geological Prediction Technology, the most common are developed with Amberg company of Switzerland
TSP200 and TSP300 serial equipments are the line style observation procedure of representative, and it is pre- that such method is widely used in tunnel geological
Report in work, its physical points is all arranged in the left and right abutment wall at face rear.Another kind of method is by Shandong University and clock
The tunnel minimum offset distance earthquake advanced detection technology of generation boat professor's R ＆ D Cooperation, this method also has in the constructing tunnel of part should
With its physical points is arranged on face according to linear rule, realizes the Single-receiver seismics reflection wave exploration of small offset distance, and data are adopted
Collection and processing are relatively simple.
In 3-D seismics reflective wave method Geological Prediction Technology, there was only U.S. NSA (national at present
Security agency) research and development TRT technologies use three-dimensional observation and treatment technology；In addition, water power physical prospecting research institute of Beijing
TST (tunnel seismic tomography) technical data collection of development is similar to TSP200 serial equipment technologies, but adopts
Identification separation and the filtering problem of three-dimensional wave field are solved with two-dimensional filtering technique, three-dimensional exploration effects are partly realized.At present
3-D seismics reflective wave method Geological Prediction Technology be to carry out physical points in the tunnel trunk space at face rear
Arrangement, be not covered with face region.
Utility model content
There is provided a kind of three-dimensional tunnel earthquake forward probe system aiming at the defect of prior art for the purpose of this utility model
System, effectively obtains the 3-D seismics reflected waveform data of front of tunnel heading, and by data processing with reaching analysis front of tunnel heading
The abnormal purpose of matter.
The utility model provides a kind of three-dimensional tunnel earthquake forward probe system, it is characterised in that：It includes：It is arranged in
Tunnel tunnel face edge is evenly arranged multiple shot points；It is arranged in 1 shot point at face center；It is evenly arranged in the tunnel palm
Multiple receiving points in the midpoint trajectory of sub- face margin and center position；Each shot point is electrically connected with receiving point with digital seismograph
Connect；Digital seismograph is electrically connected with seismic data analysis processor.
The receiving point and shot point number consecutively in the direction of the clock, digital seismograph swash by exciting dot sequency successively
Signal.
The seismic data analysis processor includes pretreatment module, velocity analysis module and depth data acquisition module.
The utility model discloses a kind of highdensity three-dimensional tunnel earthquake advanced detection technology.Seismological observation device, bag
Receiving point, shot point and digital seismograph are included, directly in tunnel tunnel face total space three dimensional arrangement, is disturbed by tunnel lateral
(earth's surface echo etc.) influence is small so that the signal to noise ratio of observation data is relative to be improved；On the other hand, face is distance
Front nearest tunnel space extremely, carries out point layout and data acquisition in face completely, same avoiding that barrel disturbs
When enhance the abnormal signal to noise ratio of front geological again.Observed result forms several common shot point trace gathers in face, comprehensively anti-
Reflect the three-dimensional configuration of the unfavorable geologic body of front of tunnel heading.Advance geologic in railway or vcehicular tunnel, coalfield mineral products tunnel
In forecast, compared to the conventional linear observation device of earthquake, the utility model seismological observation device is directly entirely empty in tunnel tunnel face
Between three dimensional arrangement, observed result forms multiple shot point trace gathers altogether in face, comprehensively the unfavorable geology of reflection front of tunnel heading
The three-dimensional configuration of body.The utility model is simple to operate, visual results, has filled up the 3-D seismics of operation in the range of tunnel tunnel face
Ripple law technology blank.
Brief description of the drawings
Fig. 1 is the utility model structural representation；
Fig. 2 is face point layout schematic diagram
Fig. 3 is common shot point trace gather locus figure；
Fig. 4 is that the utility model uses flow chart；
Wherein, 1- faces edge, 2- faces center, S1-S7 is shot point, and R1-R12 is receiving point.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to be well understood
The utility model, but they do not constitute restriction to the utility model.
As shown in figure 1, the utility model provides a kind of three-dimensional tunnel earthquake forward probe system, it is characterised in that：It
Including：It is arranged in tunnel tunnel face edge and is evenly arranged multiple shot points；It is arranged in 1 shot point at face center；Uniformly
It is arranged in multiple receiving points in the midpoint trajectory of tunnel tunnel face margin and center position；Each shot point and receiving point and number
Word seismic detector is electrically connected；Digital seismograph is electrically connected with seismic data analysis processor.
The receiving point and shot point number consecutively in the direction of the clock, digital seismograph swash by exciting dot sequency successively
Signal.
The seismic data analysis processor includes pretreatment module, velocity analysis module and depth data acquisition module.
As shown in figure 4, use flow of the present utility model comprises the following steps：
Step 1：3-D seismics observation device is arranged；6 shot points are evenly arranged at tunnel tunnel face edge 1 first
(hole), 1 shot point (hole) is arranged at face center 2.Then in the middle locus of points of tunnel tunnel face margin and center position
12 receiving points (geophone station) are evenly arranged on line, 7 shot point S1-S7 and 12 receptions are arranged on tunnel tunnel face altogether
Point R1-R12, receiving point and shot point number consecutively in the direction of the clock, are sat using total station survey shot point, receiving point
Mark.Shot point, receiving point particular number and position can excavate situation according to tunnel tunnel face and adjust.Above-mentioned shot point is with receiving
Point electrically connects with digital seismograph and carries out data transfer.
Step 2：Data acquisition is carried out using digital seismograph, by exciting dot sequency excitation signal successively, all geophone stations
Seismic signal is received simultaneously, forms 84 groups of seismic reflection records.
Step 3：The data of common shot point (common-source point) trace gather, different in seismic data analysis software decimation digital seismograph
Trace gather spatially reflects the geological information of tunnel tunnel face different zones.
Step 4：Seismic data analysis software is pre-processed to the data of extraction, includes noise compacting, bad track processing, filter
Ripple, gain compensation etc.；
Step 5：Seismic data analysis software carries out velocity analysis to the data of extraction, is remembered according to 84 groups of earthquake reflected waves
The direct wave time of record and the through wave velocity of geophone offset value the Fitting Calculation, the speed is face rock stratum approximate velocity；
Step 6：Seismic data analysis software carries out time and depth transfer pattern and depth migration mode computation to the data of extraction,
Obtain depth data；
Wherein, time and depth transfer pattern：Time and depth transfer is carried out to the data volume of step 5 with the velocity of longitudinal wave obtained in step 5
Depth numeric field data is obtained, the data distribution is in the three dimensions before face；
Depth migration pattern：The velocity of longitudinal wave obtained using in step 5 carries out three-dimensional prestack depth inclined as image taking speed
Move, obtain three dimensional depth numeric field data.
Step 7：Abnormal explanation foundation can be provided from different aspect by the achievement of step 6 both of which, in conjunction with brill
Hole and geological radar data carry out integrated interpretation.
The utility model discloses a kind of density three-dimensional tunnel earthquake advanced detection technology.Seismological observation device directly exists
Tunnel tunnel face total space three dimensional arrangement, is disturbed (earth's surface echo etc.) influence small by tunnel lateral so that the letter of observation data
Making an uproar can be improved than relative；On the other hand, face is apart from front nearest tunnel space extremely, completely in face
Point layout and data acquisition are carried out, the abnormal signal to noise ratio of front geological is enhanced again while avoiding barrel from disturbing.Observation
As a result several common shot point trace gathers are formed in face, comprehensively the three-dimensional configuration of the unfavorable geologic body of reflection front of tunnel heading.
Main explained by tunnel tunnel face 3-D seismics observation device and data processing of the utility model constitutes, and can finally obtain
To the depth data of tunnel tunnel face front three dimensions, the effect of tunnel geological forecast, principle and implementation process are reached
Simply.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (3)
1. a kind of three-dimensional tunnel earthquake forward probe system, it is characterised in that：It includes：It is arranged in tunnel tunnel face edge uniform
Arrange multiple shot points；It is arranged in 1 shot point at face center；It is evenly arranged in tunnel tunnel face margin and center position
Midpoint trajectory on multiple receiving points；Each shot point is electrically connected with receiving point with digital seismograph；Digital seismograph and ground
Shake data analysis processor electrical connection.
2. three-dimensional tunnel earthquake forward probe system according to claim 1, it is characterised in that receiving point and shot point are equal
Number consecutively in the direction of the clock, digital seismograph is by exciting dot sequency excitation signal successively.
3. three-dimensional tunnel earthquake forward probe system according to claim 1, it is characterised in that seismic data analysis processing
Device includes pretreatment module, velocity analysis module and depth data acquisition module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621014091.5U CN206594308U (en) | 2016-08-31 | 2016-08-31 | Three-dimensional tunnel earthquake forward probe system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014091.5U CN206594308U (en) | 2016-08-31 | 2016-08-31 | Three-dimensional tunnel earthquake forward probe system |
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| Publication Number | Publication Date |
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| CN206594308U true CN206594308U (en) | 2017-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144892A (en) * | 2022-06-30 | 2022-10-04 | 重庆中环建设有限公司 | Three-dimensional advanced geological prediction method |
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2016
- 2016-08-31 CN CN201621014091.5U patent/CN206594308U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144892A (en) * | 2022-06-30 | 2022-10-04 | 重庆中环建设有限公司 | Three-dimensional advanced geological prediction method |
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