CN107780400A - A kind of heavy caliber water-conveyance tunnel foundation detection system and method - Google Patents
A kind of heavy caliber water-conveyance tunnel foundation detection system and method Download PDFInfo
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- CN107780400A CN107780400A CN201610720559.0A CN201610720559A CN107780400A CN 107780400 A CN107780400 A CN 107780400A CN 201610720559 A CN201610720559 A CN 201610720559A CN 107780400 A CN107780400 A CN 107780400A
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- 238000001514 detection method Methods 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 41
- 238000005070 sampling Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
Abstract
The present invention relates to tunnel detection technique field, discloses a kind of heavy caliber water-conveyance tunnel foundation detection system and method, solves in the prior art on the premise of tunnel structure is not destroyed, it is difficult to the problem of being detected to tunnel foundation quality.The system includes hammering focus (1), wave detector (2) and detector (3), wherein, hammering focus is connected by signal wire with detector, wave detector is connected by connecting line with detector, when hammering focus in tunnel ground earthquake-wave-exciting, excitation signal is transferred to detector by signal wire, detector records excitation signal, the seismic wave for hammering focus and being inspired in tunnel ground is received by wave detector, detector receives the oscillogram of the seismic wave for the tunnel ground that wave detector obtains by connecting line, by display screen (4) display waveform figure of detector.The embodiment of the present invention is applied to during heavy caliber water-conveyance tunnel foundation detection.
Description
Technical field
The present invention relates to tunnel detection technique field, more particularly to a kind of heavy caliber water-conveyance tunnel foundation detection system and side
Method.
Background technology
With the south water to north, Yin Luanru Tang, draw it is yellow enter the large-scale water delivery engineering such as Shanxi start successively, heavy caliber water-conveyance tunnel
More and more it is applied among each large-scale water delivery engineering.Heavy caliber water-conveyance tunnel not only ensures larger carrying capacity, and can bear
Certain pressure, there is the water delivery advantage of its own.But because of its pressure-bearing and the particularity such as buried, once built up or run, it is impossible to
To its ground damage the detection of tunnel structure, common detection methods are unable to reach the purpose of detection tunnel ground, especially existed
After the natural calamity such as flood or earthquake, it is difficult to make science judgment to water-conveyance tunnel foundation quality.
The content of the invention
Embodiments of the invention provide a kind of heavy caliber water-conveyance tunnel foundation detection system and method, realize and are ensureing not
, being capable of quick detection tunnel ground on the premise of destroying tunnel structure.
To reach above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that：
A kind of heavy caliber water-conveyance tunnel foundation detection system, the system include hammering focus, wave detector and detector, its
In, the hammering focus is connected by signal wire with the detector, and the wave detector is connected by connecting line and the detector
Connect, when the hammering focus is in tunnel ground earthquake-wave-exciting, excitation signal is transferred to the detector by the signal wire,
The detector records the excitation signal, receives what the hammering focus inspired in the tunnel ground by the wave detector
Seismic wave, the detector receive the oscillogram of the seismic wave for the tunnel ground that the wave detector obtains by connecting line,
The oscillogram of the seismic wave of the tunnel ground is shown by the display screen of the detector, the trigger energy shakes for the hammering
The energy of source output.
Optionally, the trigger energy scope of the hammering focus is 18-24 pounds.
Optionally, the wave detector is receives the wave detector of a certain specific frequency seismic wave, and the specific frequency is in 4-
In the range of 100Hz.
A kind of detection method of heavy caliber water-conveyance tunnel foundation detection system, methods described include：
Set the detection range of tunnel ground；
In the detection range, the wave detector and different tests parameter of different specific frequencies is respectively adopted, by described
Detector collects the test waveform figure of multiple seismic waves of the tunnel ground, and the test parameters includes offset distance, moved
Dynamic track pitch, sampling time and trigger energy, the offset distance are the wave detector and the distance for hammering focus, the mobile track pitch
For the wave detector and the simultaneously mobile distance of hammering focus, the sampling time be the detector gather seismic wave when
Between；
The test waveform figure of more the multiple seismic wave, determine that lineups reflect obvious experiment to the tunnel ground
Oscillogram corresponds to the wave detector and detection parameters of wave detector and the setup parameter of specific frequency needed for Site Detection；
In the detection range, wave detector and detection parameters according to needed for the Site Detection, pass through the detection
Instrument collects the detection waveform figure of multiple seismic waves of the tunnel ground.
Optionally, the detection range includes doubtful problem section and normal reach.
Optionally, the span of the offset distance is 2-10m.
Optionally, the span of the mobile track pitch is 0.5-2m.
Optionally, the span in the sampling time is 0.1-1ms.
Optionally, it is described in the detection range, the wave detector and different tests ginseng of different specific frequencies is respectively adopted
Number, include the step of the test waveform figure for multiple seismic waves that the tunnel ground is collected by the detector：
A) one section of test distance is chosen in the detection range, and survey line is set along canal axes direction；
B) wave detector of a certain specific frequency is chosen, sets offset distance, trigger energy, sampling time and mobile road respectively
Away from；
C) wave detector is fixed on the tunnel ground along the survey line in the test distance；
D) according to the offset distance, earthquake is excited on the survey line with the trigger energy using the hammering focus
Ripple；
E) geological data is received within the sampling time by the detector；
F) in the test distance, by the hammering focus and the wave detector according to the mobile same time shift of track pitch
It is dynamic, and repeat step c)-e), test waveform figure is obtained by the detector；
G) wave detector, offset distance, trigger energy, sampling time and the mobile track pitch in being different from b) are chosen respectively, are repeated
Step c)-f).
Optionally, it is described in the detection range, wave detector and detection parameters according to needed for the Site Detection, lead to
The step of detection waveform figure for crossing multiple seismic waves that the detector collects the tunnel ground, includes：
H) in the detection range, the wave detector needed for the Site Detection is fixed on the tunnel along the survey line
On ground；
I) offset distance in the detection parameters, using the hammering focus with the triggering energy in the detection parameters
Amount earthquake-wave-exciting on the survey line；
J) geological data is received in sampling time in the detection parameters by the detector；
K) in the detection range, by the hammering focus and the wave detector according to the movement in the detection parameters
Track pitch is simultaneously mobile；
L) repeat step h)-k), detection waveform figure is collected by the detector.
Optionally, in the detection waveform of multiple seismic waves that the tunnel ground is collected by the detector
Include after figure：
When the lineups of the detection waveform figure occur lacking or during wrong section, judge the region of the missing or wrong section occur
Problem be present in the corresponding tunnel ground.
By a kind of heavy caliber water-conveyance tunnel foundation detection system and method provided in an embodiment of the present invention, tunnel is first set
The detection range of ground, and in the detection range, the wave detector and different tests parameter of different specific frequencies is respectively adopted,
The test waveform figure of multiple seismic waves of the tunnel ground, more the multiple seismic wave are collected by the detector
Test waveform figure, determine that lineups reflect that obvious test waveform figure corresponds to the wave detector of specific frequency to the tunnel ground
It is wave detector and detection parameters needed for Site Detection with setup parameter, and then in the detection range, according to the scene
Wave detector and detection parameters needed for detection, the inspection of multiple seismic waves of the tunnel ground is collected by the detector
Survey oscillogram.The embodiment of the present invention is solved in the prior art on the premise of tunnel structure is not destroyed, it is difficult to tunnel ground
The problem of quality is detected, quick detection tunnel ground can be realized.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of structural representation of heavy caliber water-conveyance tunnel foundation detection system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow of the detection method of heavy caliber water-conveyance tunnel foundation detection system provided in an embodiment of the present invention
Figure；
Fig. 3 is detection waveform figure provided in an embodiment of the present invention.
Description of reference numerals
The 1 hammering wave detector of focus 2
The display screen of 3 detector 4
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The embodiments of the invention provide a kind of heavy caliber water-conveyance tunnel foundation detection system, as shown in figure 1, the system bag
Hammering focus 1, wave detector 2 and detector 3 are included, wherein, the hammering focus is connected by signal wire with the detector, described
Wave detector is connected by connecting line with the detector, when the hammering focus is in tunnel ground earthquake-wave-exciting, the letter
Excitation signal is transferred to the detector by number line, and the detector records the excitation signal, and institute is received by the wave detector
The seismic wave that hammering focus inspires in the tunnel ground is stated, the detector receives the wave detector by connecting line and obtained
The tunnel ground seismic wave oscillogram, the seismic wave of the tunnel ground is shown by the display screen 4 of the detector
Oscillogram, the trigger energy for it is described hammering focus output energy.
Wherein, the scope of the trigger energy of the hammering focus is 18-24 pounds.It can include in the detecting system multiple
Wave detector, each wave detector can receive the seismic wave of specific frequency, and the particular frequency range of these wave detectors is 4-100Hz.
The detector can be SWS types engineering exploration and engineering detector.
The present invention utilizes above-mentioned heavy caliber water-conveyance tunnel foundation detection system, and tunnel ground is detected, finds out tunnel
Ground whether there is the problems such as seepage deformation and differential settlement, and foundation is provided for ground subsequent treatment.As shown in Fig. 2 this hair
Bright embodiment also provides a kind of detection method of heavy caliber water-conveyance tunnel foundation detection system, comprises the following steps：
201st, the detection range of tunnel ground is set.
Detection range is determined according to engineering operation situation and testing requirements, typically by collecting tunnel construction when geology money
Material and the observational data of tunnel runtime, comprehensive descision is carried out in conjunction with field condition.For example, found in conventional walkaround inspection
There is deformation a part or suspects that the section is problematic, can be detected for these positions, or tunnel passes through river course section
After flood occurs, it is sometimes desirable to assess influence of the flood to tunnel, at this moment need to carry out the tunnel ground for passing through river course section
Detection, such as after the flood of Beijing 7.21 in 2012, to assess influence of the flood to south water to north Beijing Section Juma River tunnel, specially
Door is detected for the ground of tunnel.
Wherein, in order to include doubtful problem in the oscillogram of the comparison seismic wave subsequently become apparent from, the detection range
Section and normal reach.
202nd, in the detection range, the wave detector and different tests parameter of different specific frequencies is respectively adopted, passes through
The detector collects the test waveform figure of multiple seismic waves of the tunnel ground, and the test parameters includes skew
Away from, mobile track pitch, sampling time and trigger energy, the offset distance is the wave detector and the distance for hammering focus, the shifting
Dynamic track pitch is the wave detector and hammers the simultaneously mobile distance of focus, and the sampling time is that the detector gathers seismic wave
Time.
Wherein, the span of the offset distance is 2-10m, and the span of the mobile track pitch is 0.5-2m, described
The span in sampling time is 0.1-1ms.
Because the soil property or structure of each tunnel ground can be different, therefore before tunnel foundation detection is carried out, point
Not Cai Yong different specific frequencies wave detector and different tests parameter carry out field test, suitable inspection is determined according to result of the test
Ripple device, offset distance, mobile track pitch, sampling time and trigger energy.Specifically comprise the following steps：
A) one section of test distance is chosen in the detection range, and survey line is set along canal axes direction.
The section of the test distance covering is also required to include doubtful problem section and normal reach, in order to be obtained final
To test waveform figure in can clearly tell the oscillogram of the normal reach with continuity lineups, and lack
The oscillogram of the doubtful problem section of mistake or wrong section.
Set survey line parallel with the canal axes direction, to ensure that wave detector and hammering focus are along the tunnel
Axis direction moves.
B) wave detector of a certain specific frequency is chosen, sets offset distance, trigger energy, sampling time and mobile road respectively
Away from；
C) wave detector is fixed on the tunnel ground along the survey line in the test distance；
D) according to the offset distance, earthquake is excited on the survey line with the trigger energy using the hammering focus
Ripple；
E) geological data is received within the sampling time by the detector；
F) in the test distance, by the hammering focus and the wave detector according to the mobile same time shift of track pitch
It is dynamic, and repeat step c)-e), test waveform figure is obtained by the detector.
G) wave detector, offset distance, trigger energy, sampling time and the mobile track pitch in being different from b) are chosen respectively, are repeated
Step c)-f).
The wave detector of a certain specific frequency is chosen, and sets offset distance, trigger energy, sampling time and mobile road respectively
Away from then the wave detector is fixed on the tunnel ground along the survey line, is spaced the setting offset distance, using described
Hammering focus, the earthquake-wave-exciting on the survey line, the detector are adopted by the wave detector described with the trigger energy
Geological data is received in the sample time.Then in the test distance, by the hammering focus and the wave detector according to described
The mobile track pitch of setting moves simultaneously along the survey line, and repeats the above steps and continue to detect.By choosing different specific frequencies
Wave detector, offset distance, trigger energy, sampling time and the mobile track pitch of rate, obtain different test waveform figures, wherein, it is described
Oscillogram is also referred to as Seismic Imaging sequential section.In addition, the selection in the sampling time will ensure in earthquake-wave-exciting each time
When, the oscillogram of the seismic wave collected is the oscillogram of first crest.
203rd, the test waveform figure of more the multiple seismic wave, determine that lineups reflect obvious experiment to the tunnel
Oscillogram corresponds to the wave detector and detection parameters of wave detector and the setup parameter of specific frequency needed for Site Detection.
204th, in the detection range, wave detector and detection parameters according to needed for the Site Detection, by described
Detector collects the detection waveform figure of multiple seismic waves of the tunnel ground.
Specifically comprise the following steps：
H) in the detection range, the wave detector needed for the Site Detection is fixed on the tunnel along the survey line
On ground；
I) offset distance in the detection parameters, using the hammering focus with the triggering energy in the detection parameters
Amount earthquake-wave-exciting on the survey line；
J) geological data is received in sampling time in the detection parameters by the detector；
K) in the detection range, by the hammering focus and the wave detector according to the movement in the detection parameters
Track pitch is simultaneously mobile；
L) repeat step h)-k), detection waveform figure is collected by the detector.
After the detection waveform figure is obtained, check that the lineups of the detection waveform figure whether there is missing or wrong section,
If in the presence of the tunnel ground corresponding to the region for judging the missing or wrong section to be present is present, the tunnel ground
The defects of there may be seepage deformation or differential settlement, selection for follow-up Ground Treatment Schemes and construction provide science according to
According to.
As shown in figure 3, being the detection waveform figure of tunnel ground at one, as we can see from the figure there is missing in left part,
Right part lineups are relatively continuous, then tunnel ground there may be problem corresponding to the left part of the oscillogram.
By the embodiment of the present invention, it can quickly realize that tunnel foundation quality detects, and do not destroy tunnel structure.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (11)
- A kind of 1. heavy caliber water-conveyance tunnel foundation detection system, it is characterised in that the system include hammering focus, wave detector and Detector, wherein, it is described hammering focus be connected by signal wire with the detector, the wave detector by connecting line with it is described Detector is connected, and when the hammering focus is in tunnel ground earthquake-wave-exciting, excitation signal is transferred to institute by the signal wire Detector is stated, the detector records the excitation signal, and the hammering focus is received by the wave detector in the tunnel The seismic wave that base inspires, the detector receive the seismic wave for the tunnel ground that the wave detector obtains by connecting line Oscillogram, the oscillogram of the seismic wave of the tunnel ground is shown by the display screen of the detector, the trigger energy is The energy of the hammering focus output.
- 2. heavy caliber water-conveyance tunnel foundation detection system according to claim 1, it is characterised in that the hammering focus Trigger energy scope is 18-24 pounds.
- 3. heavy caliber water-conveyance tunnel foundation detection system according to claim 1, it is characterised in that the wave detector is to connect The wave detector of a certain specific frequency seismic wave is received, the specific frequency is in the range of 4-100Hz.
- 4. the detection method of the heavy caliber water-conveyance tunnel foundation detection system according to claim any one of 1-3, its feature It is, methods described includes：Set the detection range of tunnel ground；In the detection range, the wave detector and different tests parameter of different specific frequencies is respectively adopted, passes through the detection Instrument collects the test waveform figure of multiple seismic waves of the tunnel ground, and the test parameters includes offset distance, mobile road Away from, sampling time and trigger energy, the offset distance is the wave detector and the distance for hammering focus, and the mobile track pitch is institute State wave detector and hammer focus while mobile distance, the sampling time is the time that the detector gathers seismic wave；The test waveform figure of more the multiple seismic wave, determine that lineups reflect obvious test waveform to the tunnel ground The wave detector and setup parameter of the corresponding specific frequency of figure are wave detector and detection parameters needed for Site Detection；In the detection range, wave detector and detection parameters according to needed for the Site Detection, adopted by the detector Collection obtains the detection waveform figure of multiple seismic waves of the tunnel ground.
- 5. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that described Detection range includes doubtful problem section and normal reach.
- 6. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that described The span of offset distance is 2-10m.
- 7. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that described The span of mobile track pitch is 0.5-2m.
- 8. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that described The span in sampling time is 0.1-1ms.
- 9. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that described In the detection range, the wave detector and different tests parameter of different specific frequencies is respectively adopted, is adopted by the detector The step of test waveform figure for collecting the multiple seismic waves for obtaining the tunnel ground, includes：A) one section of test distance is chosen in the detection range, and survey line is set along canal axes direction；B) wave detector of a certain specific frequency is chosen, sets offset distance, trigger energy, sampling time and mobile track pitch respectively；C) wave detector is fixed on the tunnel ground along the survey line in the test distance；D) according to the offset distance, using the hammering focus with the trigger energy earthquake-wave-exciting on the survey line；E) geological data is received within the sampling time by the detector；F) it is in the test distance, the hammering focus and the wave detector is simultaneously mobile according to the mobile track pitch, and Repeat step c)-e), test waveform figure is obtained by the detector；G) wave detector, offset distance, trigger energy, sampling time and the mobile track pitch in being different from b), repeat step are chosen respectively c)-f)。
- 10. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 9, it is characterised in that institute State in the detection range, wave detector and detection parameters according to needed for the Site Detection, gathered by the detector The step of obtaining the detection waveform figure of multiple seismic waves of the tunnel ground includes：H) in the detection range, the wave detector needed for the Site Detection is fixed on the tunnel ground along the survey line On；I) offset distance in the detection parameters, existed using the hammering focus with the trigger energy in the detection parameters Earthquake-wave-exciting on the survey line；J) geological data is received in sampling time in the detection parameters by the detector；K) in the detection range, by the hammering focus and the wave detector according to the mobile track pitch in the detection parameters It is simultaneously mobile；L) repeat step h)-k), detection waveform figure is collected by the detector.
- 11. the detection method of heavy caliber water-conveyance tunnel foundation detection system according to claim 4, it is characterised in that Include after the detection waveform figure of multiple seismic waves that the tunnel ground is collected by the detector：When the lineups of the detection waveform figure occur lacking or during wrong section, judge the missing occur or the region of wrong section is corresponding The tunnel ground problem be present.
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Application publication date: 20180309 |
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