CN108121011B - The induced polarization separate type detection cable system and its distribution method of two side-wall pilot tunnel tunneling - Google Patents
The induced polarization separate type detection cable system and its distribution method of two side-wall pilot tunnel tunneling Download PDFInfo
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- CN108121011B CN108121011B CN201711349254.4A CN201711349254A CN108121011B CN 108121011 B CN108121011 B CN 108121011B CN 201711349254 A CN201711349254 A CN 201711349254A CN 108121011 B CN108121011 B CN 108121011B
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
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Abstract
The invention discloses a kind of induced polarization separate types of two side-wall pilot tunnel tunneling to detect cable system, and method, system includes measurement cable system, power cable system and ground cable, measuring cable system includes measurement cable, electrode access unit, spring measuring electrode and measurement cable hub, the spring measuring electrode includes multiple, it is successively set in the drilling of face different location, measurement cable is connected by electrode access unit, the measurement cable of different location converges into one total cable of measurement by measurement cable hub and is connected on induced polarization instrument；Service cable system includes power total cable and spring current electrode, the spring current electrode include it is multiple, be successively set in the drilling of face, spring current electrode is connected on the current electrode access unit for being located at and powering on total cable by point hole conducting wire.
Description
Technical field
The invention belongs to the technical fields of the induced polarization method of applied geophysics electrical survey (-ing), more particularly to bilateral
The electrical method forward probe of wall pilot tunnel method tunneling front of tunnel heading and periphery water content or other unfavorable geologic bodies and forecast skill
Art, and in particular to a kind of the induced polarization separate type detection cable system and its distribution method of two side-wall pilot tunnel tunneling.
Background technique
It is different from traditional tunnel full-section excavation method, two side-wall pilot tunnel is primarily adapted for use in that section is very big, stratum is poor
IV, V grade of country rock stratum, unstable rock mass and Shallow Section, biased segment, Portal Section.During constructing tunnel, can usually it meet
To adverse geological conditions such as tomography, solution cavity, crushed zone, water-bearing structures, implementing effective advance geologic prediction is to avoid development machine
The effective means that disaster of constructing and accident occur.Induced polarization method is to find gold according to the effect of induced polarization of rock, ore
The one group of electrical prospecting method for the problems such as belonging to and solving hydrogeology, engineering geology.It is (economical, lossless, fast with the advantage that it is unique
Speed and abundant information etc.) it is widely used in resource exploration and engineering exploration.Induced polarization can be realized in front of tunnel heading 30m not
The accurate description of good geologic body three-dimensional position and spatial shape, the especially quantitative problem of water, therefore induced polarization method is answered
In the construction of tunnel and Double side heading method, by power supply/Automatic survey, front of tunnel heading in tunnel excavating process is verified
Various unfavorable geologic bodies can reduce the generation of accident in work progress, improve construction efficiency, shorten the construction period.
Conventional induced polarization method is mainly used in the tunnel or tunnel of full face tunneling, for using partial excavation method
Tunnel, since its face each section drilling depth is different, there has been no a kind of detection cable that can be applied to such situation and phases at present
Distribution method to be answered, can not only be detected in face each section, finally integrate data, whole process takes time and effort,
It exerts a certain influence to the normal excavation in tunnel.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of induced polarization separate type of two side-wall pilot tunnel tunneling
Cable system and its distribution method are detected, it is convenient that the present invention can be achieved, quickly, efficient two side-wall pilot tunnel construction induced polarization
Advanced prediction.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling, including measurement cable system,
Power cable system and ground cable, in which:
Measuring cable system includes measurement cable, electrode access unit, spring measuring electrode and measurement cable hub, institute
State spring measuring electrode include it is multiple, be successively set in the drilling of face different location, connected by electrode access unit
Measurement cable is connect, the measurement cable of different location converges into one total cable of measurement by measurement cable hub and is connected to induced polarization
On instrument；
Service cable system includes power total cable and spring current electrode, the spring current electrode include it is multiple, according to
Secondary to be arranged in the drilling of face, spring current electrode is connected to the power supply electricity for being located at and powering on total cable by point hole conducting wire
On the access unit of pole.
Further, the measurement cable is Aviation cable, which is provided with measuring electrode access unit.
Further, the spring measuring electrode is connected by way of winding with electrode access unit.
Further, the measurement cable is respectively arranged at face two sides and middle part by independent three Duan Zucheng.
Further, there are M electrode access unit, electrode access unit tool on the measurement cable of face two sides
There are certain intervals, between thering is N number of electrode access unit, electrode access unit to have centainly on the measurement cable in the middle part of face
Every, and M is more than or equal to N.
The measurement cable of face different location converges into one total cable of measurement by measuring cable hub, measures total cable end
End is connected by aviation plug with induced polarization instrument.
Further, the spring measuring electrode includes measuring electrode, spring, ring spring and clamp button of the spring, measurement electricity
Pole end is provided with clamp button of the spring, passes through spring connecting spring ring.
The laying of above-mentioned detection cable system comprises the steps of:
(1) two rows of M measuring electrode drillings are laid on tunnel tunnel face, and spring measuring electrode is sequentially inserted into drilling
In；
(2) the spring measuring electrode for being located at face left part is connected by measuring electrode access unit with measurement cable
It connects, in the middle part of face and right part is also same；
(3) the measurement cable for being located at left, center, right portion is connected on the total cable of measurement by measuring cable hub, finally
Total cable will be measured to be connected on induced polarization instrument 25 by the aviation plug of end.So far the laying of measurement cable finishes；
(4) current electrode drilling is divided into N ring, every trepan hole count Q, amounts to M drilling, distance of every ring away from face is not
Unanimously, there is interval；
(5) current electrode is inserted into the first trephine opening, electrode is connected to the confession for being located at total cable of powering by point hole conducting wire
On electrode access unit, the current electrode at remaining Fourth Ring is successively laid, and it is connected to by current electrode access unit
It powers on total cable, total cable that will finally power is connected to induced polarization instrument by the aviation plug of end；
(6) 2 drillings are laid on the tunnel floor away from tunnel tunnel face distant place, and the end of ground cable is respectively connected to
In drilling, ground cable is connected on induced polarization instrument so far induced polarization separate type spy by being located at the aviation plug of end
Cable system laying is surveyed to finish.
Further, the distant place refers to greater than 100m.
Compared with prior art, the invention has the benefit that
(1) separate type detection cable is suitable for the in-situ measurement using two side-wall pilot tunnel tunneling, overcomes biography
The induced polarization exploration cable of system is only applicable to the limitation using full face tunneling method tunnel in-situ measurement；
It (2), can be to full tunnel without removing gib when separate type detection cable is connect through electrode with tunnel surrounding
Road face is detected, can only be in the situation of face progress branch's detection, significantly compared to the detection of traditional induced polarization method
Increase the flexibility and detection efficient of detection；
(3) separate type detection cable joint connection in site is convenient, assists without other instruments equipment.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 tunnel tunnel face measuring electrode layout diagram；
Fig. 2 spring measuring electrode schematic diagram；
Fig. 3 face left part, right part measure cable schematic diagram；
Cable schematic diagram is measured in the middle part of Fig. 4 face；
Fig. 5 measures total cable schematic diagram；
Fig. 6 tunnel side wall current electrode layout diagram；
Fig. 7 current electrode schematic diagram；
The total cable schematic diagram of Fig. 8 power supply；
Fig. 9 ground cable schematic diagram；
Figure 10 induced polarization separate type detects cable system and lays top view；
In figure: 1. measuring electrodes lay drilling, 2. tunnel gibs, 3. spring measuring electrodes, 4. springs, 5. springs
Ring, 6. clamp button of the spring, 7. measuring electrode access units, 8. face left/right portions measure cable, measure line in the middle part of 9. faces
Cable, 10. measurement cable hubs, the 11. total cables of measurement, 12. aviation plugs, 13. measurement cable access aperture, 14. current electrode cloth
If drilling, 15. tunnel tunnel faces, 16. tunnel vaults, 17. tunnel floors, 18. current electrodes, 19. points of hole conducting wires, 20. power supplies
Electrode access unit, the 21. total cables of power supply, the 22. total cables of ground connection, 23. grounding point cables+, 24. earth cables-, 25. induced polarization instrument,
26. tunnel leftwall, 27. tunnel RightWalls.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this hair
Bright each component or component structure relationship and the relative of determination, not refer in particular to either component or element in the present invention, cannot understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection,
It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be,
It is not considered as limiting the invention.
As background technique is introduced, the tunnel that induced polarization method is mainly used in full face tunneling exists in the prior art
In road or tunnel, for the tunnel using partial excavation method, since its face each section drilling depth is different, there has been no one kind at present
The detection cable and corresponding distribution method that can be applied to such situation, can not only be detected in face each section, finally will
Data are integrated, and whole process takes time and effort, and the deficiency to exert a certain influence are normally excavated to tunnel, in order to solve
Technical problem as above, present applicant proposes a kind of induced polarization separate type detections suitable for two side-wall pilot tunnel tunneling
Cable system and its distribution method are, it can be achieved that convenient, and quickly, efficient two side-wall pilot tunnel is constructed induced polarization advanced prediction.
Detection cable is made of measurement cable system, service cable system, earth cable, and measurement cable owner will be by measurement line
Cable, electrode access unit, spring measuring electrode, measurement cable hub composition.Service cable owner will be powered electric by main body
Cable divides hole conducting wire, spring current electrode composition.
Cable is measured by spring measuring electrode, independent three sections of measurement cables and the total cable composition of measurement, is used for area
The measurement cable of face left part and right part is Aviation cable, 15 meters long, there is eight electrode access units thereon, is divided into 1m.For
Measurement cable in the middle part of face is Aviation cable, 10 meters long, thereon there are four electrode access unit, is divided into 1m.Three sections solely
Vertical measurement cable converges into one total cable of measurement by measuring cable hub, measures the long 15m of total cable, end passes through aviation plug
It is connected with induced polarization instrument.
Service cable is made of the total cable of power supply and current electrode.Total cable of powering be Aviation cable, set altogether thereon there are five
Current electrode access unit, unit interval are respectively 4m, 6m, 10m, 10m.Current electrode long 20cm, diameter 2cm can pass through
Point hole conducting wire is connected with current electrode access unit, 30 meters of total cable overall length of powering, and passes through aviation plug and the excitation pole of tail portion
Change instrument to be connected.
Ground cable is Aviation cable, separates the +/- cable of power supply thereon, and length is respectively 100 meters and 200 meters, ground line
Cable is connected by the aviation plug of end with induced polarization instrument 25.
As shown in Figure 1, two side-wall pilot tunnel construction in, face laterally usually by temporary support 2 be divided into left part,
Middle part, right part three parts.Drilling 1 is laid with impact drill first on tunnel tunnel face, drill two rows altogether, every row 10,
Lower row hole drilling is away from bottom plate 1m in the middle part of face, and upper row hole drilling is away from bottom plate 2m in the middle part of face.The spacing of wells is 1m.
As shown in Fig. 2, 20 spring measuring electrodes 3 are sequentially inserted into drilling, measuring electrode after the completion of drilling applies
3 are fastened on the measuring electrode access unit 7 shown in Fig. 3, Fig. 4 by spring 4, ring spring 5, clamp button of the spring 6.It is described
The long 20cm of spring measuring electrode, diameter 2cm, material is corrosion resistant Hastelloy.
It is located on measurement cable hub 10 as shown in figure 5, face left, center, right portion measurement cable ends are connected to
3 measurement cable access aperture 13 on, thus three sections of face independent measurement cables are converged by measurement cable hub 10
Total cable 11 is measured at one.Total cable 11 is measured to be connected on induced polarization instrument 25 by the aviation plug 12 of end.
As shown in fig. 6, tunnel tunnel face 15 is being longitudinally divided into three different drilling depths in two side-wall pilot tunnel construction
Step.Current electrode drilling 14 is laid on the corresponding left tunnel RightWall of middle step, current electrode drilling 14 is divided into five rings, often
Trepan hole count is two rows, and 4, total 20 of five rings drills.Distance of every ring away from face is respectively 0m, 4m, 10m, 20m,
30m；Lower row hole drilling is away from bottom plate 1m in the middle part of face, and upper row hole drilling is away from bottom plate 2m in the middle part of face.
As shown in fig. 7, by the first ring, totally 4 current electrodes 18 are sequentially inserted into brill after current electrode drilling 14 applies
Kong Zhong, current electrode are connected on the current electrode access unit 20 for being located at and powering on total cable 21 by point hole conducting wire.Other four
Ring successively applies.The long 20cm of current electrode, diameter 2cm, material are corrosion resistant Hastelloy.Total cable 21 of powering passes through
The aviation plug 12 of end is connected on induced polarization instrument 25.
As shown in figure 9, laying 2 drillings away from tunnel tunnel face 130m, on the tunnel floor at 230m, drilling is deep
20cm, diameter 2cm, direction Vertical tunnel bottom plate 17 are downward.The end 23,24 of ground cable 22 is respectively connected in drilling.
Ground cable 22 is connected on induced polarization instrument 25 by being located at the aviation plug 12 of end.
Figure 10 is to lay the induced polarization separate type detection cable system finished.
The invention and its lay mode the utility model has the advantages that (1) separate type detection cable be suitable for use double -side approach
The in-situ measurement of method tunneling overcomes traditional induced polarization exploration cable and is only applicable to using full face tunneling method tunnel
The limitation of in-situ measurement；(2) when separate type detection cable is connect through electrode with tunnel surrounding, without removing gib i.e.
Full tunnel tunnel face can be detected, it can only be in the shape of face progress branch's detection compared to the detection of traditional induced polarization method
Condition considerably increases the flexibility and detection efficient of detection；(3) separate type detection cable joint connection in site is convenient, is not necessarily to other
Instrument and equipment auxiliary.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of distribution method of the induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling, including measurement
Cable system, power cable system and ground cable, in which: measurement cable system includes measurement cable, electrode access unit, spring survey
Measure electrode and measurement cable hub, the spring measuring electrode include it is multiple, be successively set on face different location
In drilling, measurement cable is connected by electrode access unit, the measurement cable of different location is converged by measuring cable hub
One measures total cable and is connected on induced polarization instrument；Service cable system includes power total cable and spring current electrode, the bullet
Spring formula current electrode include it is multiple, be successively set in the drilling of face, spring current electrode by divide hole conducting wire connect
Onto the current electrode access unit being located on the total cable of power supply, it is characterized in that:
It comprises the steps of:
(1) two rows of M measuring electrode drillings are laid on tunnel tunnel face, and spring measuring electrode is sequentially inserted into drilling；
(2) the spring measuring electrode for being located at face left part is connected by measuring electrode access unit with measurement cable,
In the middle part of face and right part is also same；
(3) the measurement cable for being located at left, center, right portion is connected on the total cable of measurement by measuring cable hub, will be finally surveyed
It measures total cable to be connected on induced polarization instrument by the aviation plug of end, so far measures cable laying and finish；
(4) current electrode drilling is divided into N ring, every trepan hole count Q, amounts to M drilling, distance of every ring away from face is different
It causes, there is interval；
(5) current electrode is inserted into the first trephine opening, electrode is connected to the power supply electricity for being located at total cable of powering by point hole conducting wire
On the access unit of pole, the current electrode of remaining each ring is successively laid, and it is connected to power supply by current electrode access unit
On total cable, total cable that will finally power is connected to induced polarization instrument by the aviation plug of end；
(6) 2 drillings are laid on the tunnel floor away from tunnel tunnel face distant place, and the end of ground cable is respectively connected to drill
In, ground cable is connected on induced polarization instrument so far induced polarization separate type detection electricity by being located at the aviation plug of end
The laying of cable system finishes.
2. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as described in claim 1
Distribution method which is provided with measuring electrode access unit it is characterized in that: the measurement cable is Aviation cable.
3. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as described in claim 1
Distribution method, it is characterized in that: the spring measuring electrode is connected by way of winding with electrode access unit.
4. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as described in claim 1
Distribution method, it is characterized in that: the measurement cable is respectively arranged at face two sides and middle part by independent three Duan Zucheng.
5. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as claimed in claim 4
Distribution method, it is characterized in that: being located on the measurement cable of face two sides has M electrode access unit, electrode access unit tool
There are certain intervals, between thering is N number of electrode access unit, electrode access unit to have centainly on the measurement cable in the middle part of face
Every, and M is more than or equal to N.
6. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as described in claim 1
Distribution method, it is characterized in that: the measurement cable of face different location converges into one total cable of measurement by measuring cable hub,
It measures total cable end and is connected by aviation plug with induced polarization instrument.
7. a kind of induced polarization separate type detection cable system of two side-wall pilot tunnel tunneling as described in claim 1
Distribution method, it is characterized in that: the spring measuring electrode includes measuring electrode, spring, ring spring and clamp button of the spring, measurement electricity
Pole end is provided with clamp button of the spring, passes through spring connecting spring ring.
8. a kind of induced polarization separate type of two side-wall pilot tunnel tunneling detects cable system as described in claim 1
Distribution method, it is characterized in that: the distant place refers to greater than 100m.
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| CN201711349254.4A CN108121011B (en) | 2017-12-15 | 2017-12-15 | The induced polarization separate type detection cable system and its distribution method of two side-wall pilot tunnel tunneling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711349254.4A CN108121011B (en) | 2017-12-15 | 2017-12-15 | The induced polarization separate type detection cable system and its distribution method of two side-wall pilot tunnel tunneling |
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| CN108121011B true CN108121011B (en) | 2019-11-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194758A (en) * | 2001-12-28 | 2003-07-09 | Ohbayashi Corp | Method of evaluating bedrock of tunnel |
| JP4332643B2 (en) * | 2005-04-05 | 2009-09-16 | 独立行政法人産業技術総合研究所 | Installation method of non-polarizable electrode on rock or ground, and electric exploration method or electromagnetic exploration method using the same |
| CN103487836A (en) * | 2013-10-11 | 2014-01-01 | 钟世航 | Electrical prospecting multi-electrode multi-power supply unit system and prospecting method thereof |
| CN103645495A (en) * | 2013-12-24 | 2014-03-19 | 山东大学 | Multi-core distributed cable system for induced polarization method geological advanced prediction |
-
2017
- 2017-12-15 CN CN201711349254.4A patent/CN108121011B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194758A (en) * | 2001-12-28 | 2003-07-09 | Ohbayashi Corp | Method of evaluating bedrock of tunnel |
| JP4332643B2 (en) * | 2005-04-05 | 2009-09-16 | 独立行政法人産業技術総合研究所 | Installation method of non-polarizable electrode on rock or ground, and electric exploration method or electromagnetic exploration method using the same |
| CN103487836A (en) * | 2013-10-11 | 2014-01-01 | 钟世航 | Electrical prospecting multi-electrode multi-power supply unit system and prospecting method thereof |
| CN103645495A (en) * | 2013-12-24 | 2014-03-19 | 山东大学 | Multi-core distributed cable system for induced polarization method geological advanced prediction |
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