CN108776354A - A kind of focusing depth measurement type three-dimensional induced polarization forward probe system and method that TBM is carried - Google Patents
A kind of focusing depth measurement type three-dimensional induced polarization forward probe system and method that TBM is carried Download PDFInfo
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- CN108776354A CN108776354A CN201810806310.0A CN201810806310A CN108776354A CN 108776354 A CN108776354 A CN 108776354A CN 201810806310 A CN201810806310 A CN 201810806310A CN 108776354 A CN108776354 A CN 108776354A
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Abstract
The invention discloses a kind of focusing depth measurement type three-dimensional induced polarization method detection systems and method being equipped in TBM systems, including electrode system, electrode telescopic device, multichannel slewing equipment, cable system and induced polarization exploration instrument；Electrode system is installed on TBM cutterheads, shield, trolley and tunnel side wall, and wherein cutterhead, shield and trolley top electrode are equipped on by electrode telescopic device on TBM.Induced polarization exploration instrument controlling electrode telescopic device realizes that the automatic telescopic control of electrode, retracted position detection are detected with contact condition, the uninterrupted revolution of measuring signal, hydraulic circuit, cutterhead water route is realized using multichannel slewing equipment, realizes that the carrying of induced polarization exploration system and TBM are integrated.The present invention solves the prominent mud disaster source induced polarization forward probe problem of TBM construction tunnel gushing waters,, safely and fast reliable advantage high with automatic measurement degree, 3-d inversion imaging can be carried out to the water content of front of tunnel heading, meet the safe and efficient construction demand of TBM construction tunnels.
Description
Technical field
The present invention relates to TBM construction tunnels to focus depth measurement type three-dimensional induced polarization advanced prediction field, more particularly to a kind of
The focusing depth measurement type three-dimensional induced polarization method detection system and method that TBM is carried.
Background technology
During constructing tunnel, TBM construction methods have driving speed fast, security civilization, overall economic efficiency height etc.
Advantage, by more and more selections；However TBM is poor to the adaptability on stratum, once meet with fault belt, crack dense band,
The unfavorable geological conditions such as karst water content, soft stratum, underground river often induce the major disasters such as landslide, gushing water prominent mud, large deformation
Accident, cause the inordinate wear of TBM cutters, cutterhead damage, influence drivage efficiency and construction speed, in addition will appear fatal crass,
Engineering such as scraps at the disastrous consequence.In order to avoid above-mentioned disaster and accident generation and ensure safety for tunnel engineering, there is an urgent need to
The geological structure situation of tunnel tunnel face front is verified in advance, and rational treatment measures are formulated according to the geological condition in front,
Adjustment arrangement and method for construction in time.Therefore, the prominent mud disaster source of the gushing water in front of TBM is verified in the work of development advance geologic prediction in advance, right
Ensure that TBM safe constructions play an important roll.
TBM construction environments are complicated more compared with drill+blast tunnel and ground.First, TBM occupies most tunnels
Space, the available observation space of forward probe are extremely limited；Secondly, TBM possesses complicated electrical system and metal structure, electromagnetism
Interference is extremely serious.The common geophysical prospecting method of drilling and blasting method and ground can not directly be moved in the tunnels TBM.In addition, TBM
There are this qualitative differences, TBM to be suitable for the engineering of hard rock driving, be commonly used in the mountain ridge in structure and construction environment with shield machine
Tunnel or large-scale delivery water project, and shield machine be suitable for soft rock, soil layer tunnel excavation, be commonly used in city underground and small-sized
In pipeline work environment.There are larger differences in digging mode, structural shape, construction method with shield machine by TBM, are used for shield
The detection system of machine can not simply be transplanted to TBM construction environments.Therefore, for TBM construction complex environments, there is an urgent need for propose simultaneously
Design a kind of novel forward probe system suitable for TBM environment.
Induced polarization method is a kind of effective geophysical prospecting method for detecting the prominent mud disaster source of the gushing waters such as water content, a kind of
For the portable electrical method forward probe system in the tunnels TBM, by TBM hob tool bore by detection electrode by the way of artificial
It is arranged in face, since TBM construction environments are complicated, narrow space in cutterhead, face Electrode Operation is installed not in cutterhead
Just, it can not even be detected when hobboing cutter tool bore is blocked by disintegrating slag.BEAM (the Bore-Tunneling Electical of Germany's research and development
Ahead Monitoring) technology is a kind of focusing induced polarization exploration, this method is used as bucking electrode using shield etc., relies on
Measurement result and the curve of tunnel mileage infer aqueous situation, and detection range is small, and cannot achieve depth measurement, can not obtain the TBM palms
The three-dimensional imaging of sub- face front geological condition.Therefore, be equipped on high degree of automation on TBM there is an urgent need for developing one kind, can be to aqueous
The focusing depth measurement type induced polarization exploration system of body three-dimensional imaging, it is a kind of due to the complexity of TBM construction environments and mechanical equipment
The focusing depth measurement type three-dimensional induced polarization method forward probe system and method that TBM is carried mainly faces following problem：
(1) TBM construction environments are complicated, electromagnetic interference is serious, and a kind of observation mode focusing depth measurement type of design is primarily to ask
Topic, can suppress the interference of TBM machineries and improve detection range.
(2) TBM cutterheads occupy area space of planes, and rock slag, water etc. easily damage electrode, face top electrode in front of cutterhead
Arrangement and protection be a crucial problem, there is an urgent need for research and develop it is a kind of detect automatically with electrode condition, electrode protecting device oneself
Dynamic telescopic electrode system.
(3) TBM speed of applications are fast, less efficient by drilling laying current electrode on abutment wall, seriously affect TBM construction works
Sequence, there is an urgent need for develop a kind of current electrode Quick installation fixing device of non-drilled.
(4) TBM constructions cutterhead is rotation, and electrode, telescopic oil cylinder etc. are mounted on cutterhead, cutterhead top electrode measuring signal
It is the another problem of the invention faced to be transmitted to cutterhead rear with hydraulic circuit, needs to develop one kind while changing to turn multichannel measurement letter
Number, the multifunctional turning device of hydraulic circuit and cutterhead water route.
(5) since TBM construction environments temperature is high, air humidity is big etc., focus depth measurement induced polarization equipment need to have from
The instrument of dynamic temperature control, automatic humidity control meets the needs of TBM construction complex environment high-acruracy surveys.
Invention content
In order to overcome the deficiencies of the prior art, the present invention proposes a kind of focusing depth measurement type induced polarization method detection that TBM is carried
System and method is interfered based on depth measurement type observation mode compacting face rear TBM is focused, while improving detection range, is realized
Automatic telescopic control, the retracted position detection of electrode are detected with contact condition, and measuring signal, liquid are realized using multichannel slewing equipment
The uninterrupted revolution on pressure oil road, cutterhead water route has certainly to which the carrying for realizing induced polarization exploration system and TBM is integrated
Dynamicization measurement degree is high, safely and fast reliable advantage, can be carried out to unfavorable geologies such as the water contents of front of tunnel heading three-dimensional
Inversion imaging ensures the highly effective and safe construction of TBM.
To achieve the above object, concrete scheme of the invention is as follows：
A kind of focusing depth measurement type three-dimensional induced polarization method detection that TBM is carried disclosed in one or more embodiments
System, including：Electrode system, electrode telescopic device and induced polarization exploration instrument；
The electrode system includes measuring electrode M, electrodes of A, the poles infinite electrode B and the poles infinite electrode N, the nothing
Poor remote electrode B pole and the poles infinite electrode N are mounted on tunnel side wall, and the measuring electrode M and electrodes of A pass through electricity respectively
Pole telescopic device is equipped on TBM；The induced polarization exploration instrument controlling electrode telescopic device driving measuring electrode M and power supply
Electrode A is stretched.
Further, the electrodes of A includes：Electrodes of A 1 and electrodes of A 0, the electrodes of A 0 are installed
On cutterhead, the electrodes of A 1 is mounted on TBM shields and/or trolley.
Further, when the electrodes of A 1 is mounted on trolley, the flexible dress of the flexible electrode of driving electrodes of A 1
It sets and is connect with the column being fixed on trolley by flexural pivot.
Further, the electrode system further includes：N1 electrodes, the N1 electrodes are mounted on TBM cutterheads；By detecting N1
Resistance between electrode and electrodes of A 0 realizes the detection of 0 retracted position of electrodes of A on TBM cutterheads.
Further, the measuring electrode M is mounted on TBM cutterheads, and the electrode system further includes：N1 electrodes, the N1
Electrode is mounted on TBM cutterheads；Measuring electrode M on TBM cutterheads is realized by the resistance detected between N1 electrodes and measuring electrode M
The detection of retracted position.
Further,
By resistance value between the measuring electrode M and infinite electrode N of measurement contact country rock, determines measuring electrode M and enclose
Whether the contact condition of rock is good；
By resistance value between the electrodes of A and infinite electrode B of measurement contact country rock, determines electrodes of A and enclose
Whether the contact condition of rock is good.
Measuring electrode and electrodes of A 0 on cutterhead are all made of flexible contact electrode, including：Metal shell, absolutely
Edge pedestal, binding post and flexible contact end, the insulator foot is located in the groove of electrode rear end bottom, by gold outside groove
Belong to shell package, insulator foot is connect with electrode telescopic device, and is reserved among insulator foot for installing binding post
Connecting hole, binding post can be connect by the connecting hole with cable system.
Electrodes of A 1 on shield and/or trolley uses flexible contact electrode, including：Insulating electrode housing,
Metal shell, insulator foot, binding post and flexible contact end；The insulator foot is located in the groove of electrode rear end bottom,
It being wrapped up by metal shell outside groove, insulating electrode housing is cased with outside metal shell, insulator foot is connect with electrode telescopic device,
And the connecting hole for installing binding post is reserved among insulator foot, binding post can pass through the connecting hole and cable system
System connection.
Further, the electrode telescopic device realizes electrode automatic telescopic using hydraulic-driven；Hydraulic oil cylinder control valve
The instruction of induced polarization exploration instrument is received, control hydraulic cylinder drive cylinder bar is flexible, is connect with cylinder rod to drive
Electrode stretches.
Further, the electrode telescopic device further includes：Electrode seals, the electrode seals include：If
The block set the sealing device on cylinder rod and be arranged at electrode opening, the sealing device is when electrode is stretched out with oil
Cylinder rod moves together, is stopped by block when sealing device moves to the stop location, the sealing device and the block
The sealing in gap between electrode and hydraulic cylinder is realized in cooperation.
Further, in the external bulge-structure being arranged for protecting cutterhead or shield of electrode opening.
Further, further include：Multichannel slewing equipment；The multichannel slewing equipment includes：It multichannel swivel joint and sets
Set the quick connector and/or multi-pin connector in the multichannel swivel joint；
The multichannel swivel joint includes：At least two layers concentric return bend and it is arranged in the concentric revolution outer tube layer
Several electric slip rings.
A kind of focusing depth measurement type three-dimensional induced polarization method detection that TBM is carried disclosed in one or more embodiments
Method, including：
The measuring electrode M and electrodes of A that control is mounted on TBM respectively stretch out, and are contacted with country rock；
By measuring resistance value between the measuring electrode M and the infinite electrode N being arranged on tunnel side wall that contact country rock,
Determine whether measuring electrode M contact conditions are good；
By measuring resistance value between the electrodes of A and the infinite electrode B being arranged on tunnel side wall that contact country rock,
Determine whether electrodes of A contact condition is good；
After measuring electrode M and electrodes of A are contacted with country rock well respectively, induced polarization supplemental characteristic is acquired；
Further,
Resistance realization pair between the measuring electrode M being mounted on cutterhead by detection and the N1 electrodes on cutterhead
The detection of measuring electrode M retracted positions on cutterhead；
Further,
The electrodes of A include be mounted on TBM cutterheads on electrodes of A 0 and on shield and/or trolley
Electrodes of A 1；
During electrode stretches out, by detecting the measuring electrode M being mounted on cutterhead or electrodes of A 0 and being mounted on
Resistance between N1 electrodes on cutterhead realizes the detection to 0 retracted position of measuring electrode M on cutterhead or electrodes of A.
Beneficial effects of the present invention：
1, a kind of focusing depth measurement type three-dimensional induced polarization method detection system that TBM is carried is proposed, TBM and excitation are realized
The carrying for the forward probe system that polarizes is integrated, does not interfere TBM to construct, high degree of automation, meets TBM and constructs rapid want
It asks.
2, a kind of focusing depth measurement induced polarization observation mode suitable for TBM construction environments is devised, electrode system is mounted on
On TBM cutterheads, shield, trolley and tunnel side wall, the TBM metals interference of face rear can be preferably suppressed, while there is depth measurement
Function realizes the 3-d inversion imaging of the water content of front of tunnel heading different distance.
3, a kind of hydraulic cylinder driving electrodes automatic telescopic and electrode telescopic state detecting device are devised, electrode is realized
Automation is flexible and remote control, devise a kind of electrode seals system, can be during electrode stretches out and withdraws
It prevents rock slag from entering and causes electrode damage, ensured that the safety of induced polarization exploration electrode system swashs to realize TBM constructions
Hair polarization automation detection, improves detection efficient.
4, a kind of multichannel being connect with master control room host detection signal, hydraulic circuit suitable for TBM cutterheads electrode is proposed
Slewing equipment solves cutterhead rotation and connect problem with master control room host, while being reserved with quick connector on slewing equipment, can people
Connecting cable and hydraulic circuit are inserted in work switching soon, ensure that equipped system can be with safe and stable operation under TBM complex working conditions.
5, a kind of induced polarization Multifunctional cabinet of automatic adjustment humidity and temperature is devised, and is designed with electrical isolation system
System ensures the safe and stable operation of detection instrument under TBM complex environments, is provided for the prominent mud disaster source forward probe of gushing water high high-quality
The detection data of amount.
Description of the drawings
Fig. 1 is the forward probe device integral installation structural schematic diagram of the present invention；
Fig. 2 is mounted in the hydraulic-driven electrode telescopic system schematic diagram on TBM trolleys；
Fig. 3 is the electrode oil cylinder schematic diagram of the present invention；
Fig. 4 is the electrode sealing construction schematic diagram of the present invention；
Fig. 5 is the swivel joint schematic diagram of the present invention；
Fig. 6 is that the electrode of the present invention automatically controls schematic diagram；
Fig. 7 is the detection flow diagram of the present invention.
Wherein, 1, face；2, country rock；3, front of tunnel heading unfavorable geologic body；4, TBM trolleys；5, cutterhead；6, infinity
Electrode B pole；7, the poles infinite electrode N；8, electrodes of A 1；9, N1 electrodes；10, induced polarization exploration instrument；11, TBM master controls
Room；12, measuring electrode M；13, electrodes of A 0；14, hydraulic cylinder；15, cutterhead postnotum；16, hydraulic oil pipeline；17, electrode
Cable；18, oil cylinder protective shell；19, cutterhead front panel；20, U-shaped rubber seal ring set；21, shelves ring is sealed；22, wear ring；23,
Cylinder rod；24, multichannel swivel joint；25, oil circuit quick connector；26, signal wire multi-pin connector；27, water route quick connector；28,
Oil circuit flow monitoring system, 29, cable system.
Specific implementation mode：
The present invention is described in detail below in conjunction with the accompanying drawings：
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.Additionally, it should be understood that when in the present specification use term "comprising" and/
Or when " comprising ", existing characteristics, step, operation, device, component and/or combination thereof are indicated.
In order to solve the problems, such as that background technology proposes, this programme discloses a kind of focusing depth measurement being equipped in TBM systems
Type three-dimensional induced polarization method detection system, as shown in Figure 1, mainly include electrode system, electrode telescopic device, multichannel slewing equipment,
Cable system and induced polarization exploration instrument (10).
In one or more embodiments, electrode system includes：Measuring electrode M (12), electrodes of A, N1 electrodes (9), nothing
Poor remote electrode B pole (6) and the poles infinite electrode N (7), measuring electrode M (12) is according to cutter head structure and hobboing cutter deployment scenarios trepanning
It is installed on cutterhead (5), electrodes of A includes electrodes of A 0 (13) and electrodes of A 1 (8)；Wherein, electrodes of A 0
(13) trepanning is installed on central area position on cutterhead, and electrodes of A 1 (8) is installed on shield and trolley；It is laid in shield
Current electrode on shield and trolley forms shielding electric field, and the current electrode for being laid in cutter head center region generates electric current, passes through screen
The static focusing bunching action for covering effect and the generation of face center electric current of electric field, forms focusing effect.Meanwhile by
In the electrodes of A 1 (8) for the multigroup power supply number of rings laid on shield and trolley, supplying measure electrode spacing can be made continuous
Increase, to realize that system has the function of depth measurement.
N1 electrodes (9) are installed on after TBM cutterheads in shield body, in order to electrode telescopic device be coordinated to realize that electrode stretches out
The detection of state；The poles infinite electrode B and the poles infinite electrode N are installed on the abutment wall of tunnel rear, wherein the poles infinite electrode B
(6) spacing between the poles infinite electrode N (7) should be not less than 200m.
Electrode uses flexible contact electrode.Wherein, the flexible contact electrode on cutterhead by metal shell, insulator foot, connect
Terminal is formed with flexible contact end；Insulator foot is located in the groove of electrode rear end bottom, by metal shell packet outside groove
It wraps up in, is connected with the cylinder rod in electrode telescopic device using the form of screw thread on the inside of insulator foot, and company is reserved in centre
Connect hole, electrode cable is connect by oil cylinder connecting hole with electrode terminal, to ensure electrode connect with instrument and with TBM metals
Cutterhead insulate；Binding post connect with cable system by connecting hole in addition, the induced-polarization measurement electrode on cutterhead be all made of it is soft
Property contact unpolarizable electrode.
Flexible contact electrode on shield and trolley is by insulating electrode housing, metal-back, insulator foot, binding post and flexibility
Contact tip forms；From the flexible contact electrode in structure, shield than on the outside of the flexible contact electrode on cutterhead more one
Layer insulating electrode housing, the purpose for applying insulating electrode housing are in order to ensure the insulation of shield and electrode, to realize power supply
Electrode current normally feeds country rock.
Flexible contact end on cutter head center, shield and trolley passes through the copper conductor and binding post in electrode metal shell
It is connected, insulation inner ring is designed in the unpolarizable electrode metal shell in cutterhead, flexible contact end is mounted on insulated liner
On, it is connected with metal shell and binding post by the copper-bath for the inner ring that insulate；The insulating electrode housing is using annular
Rubber is wrapped in the outside of electrode, realizes the insulation of electrode metal shell and shield or other good conductors.
Wherein, the measuring electrode M (12) on cutterhead and electrodes of A 0 (13) be by cable connection multichannel slewing equipment, and
It is connect with induced polarization exploration instrument (10)；Electrode on cutterhead, shield and trolley is equipped on TBM by electrode telescopic device
On.
Measuring electrode M (12) is unpolarizable electrode, includes mainly stainless steel metal shell, insulator foot, back panel wiring
Column and flexible contact end, insulator foot are located in the groove of electrode rear end bottom, are wrapped up by metal shell outside groove, insulate
It is connected with the cylinder rod in electrode telescopic device using the form of screw thread on the inside of pedestal, and connecting hole is reserved in centre, electricity
Pole cable is connect by oil cylinder preformed hole with electrode terminal, to ensure electrode connect with instrument and with TBM metal cutterheads it is exhausted
Edge；Purpose using stainless steel metal shell is the retracted position for detecting electrode.
Shell is also stainless steel metal in the electrodes of A 0 (13) of cutter head center position, structure in electrodes of A
Shell is the current electrode of flexible contact.Current electrode on shield and trolley includes insulating electrode housing from structure, stainless
Steel metal shell, insulator foot, back panel wiring column and flexible contact end, stainless steel metal shell are cased with outside one layer of insulating electrode outside
Set realizes that current electrode electric current normally feeds country rock to ensure the insulation of shield or other metallic objects and current electrode.
In one or more embodiments, electrode telescopic device is all made of hydraulic-driven and realizes the flexible of electrode, device master
To include the telescopic device of driving cutterhead top electrode, drive the telescopic device of shield top electrode and stretching for driving trolley top electrode
Device；Wherein, the telescopic device of driving cutterhead top electrode includes hydraulic cylinder (14), cylinder rod (23), electrode ram control valve
Block and electrode seals, cutterhead electrode are installed on electrode telescopic device in cutterhead preformed hole；Electrode ram control valve is excited
The control that hair polarization detection instrument (10) instructs, control hydraulic cylinder (14) are drivingly connected the electrode on cylinder rod, realize electricity
The stretching and the withdrawal at the end of detection of pole detection process；It is provided with hand-operated valve simultaneously, to unexpected in electrode ram control valve
In the case of damage can use manually control, ensure electrode hydraulic cylinder (14) normal work；Electrode contact condition detects
Function can realize that electrode is detected with the contact situation of face or tunnel side wall, and sealing device is arranged between cylinder rod and hole wall
Gap in, to play the role of sealing isolation.
Induced polarization exploration instrument (10) coordination electrode telescopic device drives the flexible of cutterhead top electrode, and realizes that electrode is stretched
Contracting state-detection and the detection of electrode contact condition；Electrode retracted position detection refer to, due on cutterhead measuring electrode and power supply
Electrode design metallic conduction shell, when electrode is recovered in impeller eye, electrode metal shell is contacted with cutterhead metallic object, and electrode is stretched
When going out, electrode metal shell is not contacted with cutterhead, and the resistance for the N1 electrodes (9) being connected with cutterhead by detecting electrode realizes cutterhead
The retracted position of top electrode detects.
The detection of electrode contact condition refers to sending measurement of Grounding Resistance instruction by induced polarization exploration instrument (10), surveying
Resistance value between the electrode of amount contact country rock and the infinite electrode on the abutment wall of tunnel rear, if resistance value is in set threshold
It is worth except range, then shows electrode loose contact, needs to readjust electrode contact situation.
The telescopic device of driving shield top electrode includes hydraulic cylinder (14), cylinder rod and electrode ram control valve block, is connected
It is similar with cutterhead electrode telescopic device to connect mode, can equally realize that electrode contact condition detects.
Driving trolley top electrode telescopic device further include other than structure is similar with shield electrode telescopic device
Column, flexural pivot.Column is mounted on TBM trolleys (4), and hydraulic telescopic device is connect by flexural pivot with trolley upper pillar stand, when detection
The angle of electrode can be adjusted, ensures that electrode contacts well with country rock.
In one or more embodiments, electrode seals include that the sealing block being arranged on cylinder rod and setting exist
The seal stopper ring (21) of cutterhead front panel (19) or shield top electrode opening, the sealing block are mainly empty in oil cylinder and electrode
Increase U-shaped rubber seal ring set between gap to realize, moved with cylinder rod when electrode is stretched out, when sealing block moves to institute
Stopped by block when stating seal stopper ring (21) position, the sealing block realizes electrode and hydraulic cylinder with sealing shelves ring cooperation
(14) sealing in gap between；
After electrode stretches out, there are gaps between cylinder rod (23) and hydraulic cylinder (14), to prevent disintegrating slag from entering, need to solve
Sealing problem after electrode stretching ensures the normal stretching of electrode and withdraws, electrode encapsulation scheme such as Fig. 4 institutes that the present invention designs
Show, increasing U-shaped rubber seal ring set (20) in the gap of hydraulic cylinder (14) and electrode is sleeved on cylinder rod (23), and in cutterhead
Seal stopper ring (21) is set at electrode opening, and U-shaped rubber seal ring set (20) is when electrode stretches out, since frictional force is with cylinder rod
(23) it moves, cylinder rod (23) can not be followed to continue to stretch out by baffle ring blocking when sealing ring moves to seal stopper ring (21) position,
It stops and plays sealing function in this position.Prominent rock causes the electrode installed on cutterhead (5) in tunneling process in order to prevent
Abrasion, in the both sides external position of electrode opening setting wear ring (22).
Hydraulic-driven electrode system on electrode or shield is in addition to the sealing of above-mentioned hydraulic cylinder (14), cylinder rod 23 and electrode
Further include hydraulic oil pipeline (16), electrode cable (17) and oil cylinder protective shell (18) other than device；Wherein, the electrode on cutterhead
Hydraulic cylinder (14), hydraulic oil pipeline (16) and electrode cable (17) are installed on cutterhead postnotum (15), hydraulic oil pipeline
(16) and electrode cable (17) passes through the oil cylinder protective shell (18) being welded on cutterhead postnotum (15) to be protected, and prevents slag storehouse
Interior slag charge damages hydraulic oil pipeline (16) and cable；The electrode hole on cutterhead or shield is arranged in electrode seals
At aperture；Electrode oil cylinder schematic diagram is as shown in Figure 3.
Electrode oil cylinder can be used the hydraulic cylinder (14) of diameter 75mm, and cutterhead (5) steps back 10-20cm when detection, considers rich
Remaining design hydraulic cylinder travel 32cm, reception driving instruction is fully extended to electrode, and everything is equal from starting for hydraulic cylinder (14)
It can be completed in 15s；The hydraulic oil pipeline and electrode cable of measuring electrode M (12) and electrodes of A 0 (13) on cutterhead (5)
(17) it is drawn via multichannel swivel joint (24), oil cylinder protective shell (18) is welded on cutterhead postnotum (15) to hydraulic oil earthen pipe
Road and electrode cable (17) are protected.
Due on cutterhead measuring electrode M (12) and electrodes of A 0 (13) shell be made of metallic conduction shell, therefore
And the retracted position of electrode, electrode telescopic device and electrode shape can be judged by being installed on the N1 electrodes (9) after cutterhead in shield body
State detection is controlled by the detection control module in induced polarization exploration instrument (10)；When TBM stops driving and cutterhead retrogressing
After, cutterhead electrode, which receives, stretches out instruction, detects that the resistance value between electrode and the N1 electrode (9) on cutterhead is less than at this time and sets
When determining threshold value T1, show that electrode is not yet fully extended, whereas if when surveyed resistance value is more than given threshold T2, shows electrode
Through stretching out cutterhead；When detection mission is completed, after cutterhead electrode receives withdrawal instruction, detect at this time electrode on cutterhead and
When resistance value between N1 electrodes (9) is more than given threshold T2, show that electrode is not yet withdrawn, conversely, institute's measuring resistance value is less than threshold
When value T1, show that electrode has been in retracted state.
Measurement of Grounding Resistance instruction is sent by the detection control module in induced polarization exploration instrument (10), measures contact
Resistance value between the electrode M or A of country rock and infinite electrode on the abutment wall of tunnel rear；As detection measuring electrode M
(12) with the contact condition of country rock when, the resistance value between measuring electrode M (12) and the poles infinite electrode N, if resistance value is in institute
If except threshold range, then showing electrode loose contact, need to readjust measuring electrode and country rock contact situation；When detection supplies
When the contact condition of electrode A and country rock, the resistance value between electrodes of A and electrode B is detected, if surveyed resistance value is in setting threshold
It is worth except range, then shows electrode loose contact, current electrode need to be readjusted and contact situation with country rock.
In one or more embodiments, multichannel slewing equipment includes multichannel swivel joint, quick connector and multi-pin connector,
The effect of multichannel swivel joint (24) is the mistake rotated in cutterhead (5) for the cable for ensureing the electrode on cutterhead and between host
It will not occur mutually to wind in journey and even be broken；Meanwhile it being reserved in multichannel swivel joint (24) and reserving oil circuit quick connector
(25), signal wire multi-pin connector (26) and water route quick connector (27)；Quick connector and multi-pin connector it is reserved, it is therefore an objective to
Multichannel swivel joint break down when, be quickly correspondingly connected with using quick connector and multi-pin connector, it is ensured that detection it is fast
Speed carries out.
Multichannel swivel joint (24) is designed with 2 layers of concentric return bend, and outer layer designs several electric slip rings；Wherein 2 layers with one heart
Oil circuit and water route revolution may be implemented in return bend, and the transmission of multiple signals cable may be implemented in several electric slip rings；Swivel joint
2 quick connectors of outer design, are arranged in cutterhead and girder transfer conduit respectively 1 quick plug of design, and with the 2 of swivel joint
A quick connector connection；2 multi-pin connectors are designed in swivel joint simultaneously, the cable respectively design 1 being arranged in cutterhead and girder
A multi-pin connector, and being connect with 2 multi-pin connectors of swivel joint, to realize water route under cutterhead rotary mode, oil circuit with it is more
The transmission of road signal.The quick plug of the pipeline in cutterhead and girder and multi-pin connector (26) can be directly correspondingly connected with simultaneously, be protected
Hinder slewing equipment failure when water route, oil circuit and multiple signals standby transport.In addition, being provided with oil circuit flow in oil circuit pipeline
Monitoring system (28) monitors the size of flow.Swivel joint (24) schematic diagram is as shown in Figure 5.
In one or more embodiments, cable system (28) includes electrode electrical connection cable, cutterhead main push-towing rope, N1 in cutterhead
Cable, service cable A1, infinity power supply B cables and infinity measure N cables, and the connection cables of electrode are measured for connecting in cutterhead
Electrode M (12) and electrodes of A 0 (13) realize the confession to the signal transmission and electrodes of A 0 (13) of measuring electrode M (12)
Electricity；The connection cables of electrode pool cutterhead main push-towing rope in cutterhead, and main push-towing rope passes through multi-pin connector and multichannel swivel joint (24) and master
Induced polarization host is connected in control room (11)；N1 cables are used to be connected and installed in the N1 electrodes (9) after TBM cutterheads in shield body,
By 1 with single cable connection to master control room detection control module；Service cable A1 includes the service cable of shield top electrode
With the service cable of trolley top electrode, it to be used for the signal transmission to current electrode；Infinity power supply B cables measure N cables with infinity：
It is connected with the host in induced polarization exploration instrument using the form of two single-core cables.
In one or more embodiments, induced polarization exploration instrument (10) is mainly by induced polarization host, direct current constant current
Source, detection control module and multiple function apparatus cabinet composition, DC constant current power supply are connected with induced polarization host by cable,
Using alternating current 220V mains-supplied, electrode system is connected via cable system (28) with induced polarization host, detection control module with
Induced polarization host connects；Induced polarization host can realize acquisition and processing to signal；Induced polarization host, direct current constant current
Source and detection control module are mounted in multiple function apparatus cabinet.
Detection control module is installed in TBM master control rooms (11), and detection control module sends the flexible dress of instruction coordination electrode
The flexible and electrode contact condition detection of middle hydraulic cylinder system is set, while there is the work(detected to cutterhead electrode retracted position
Energy.
Multiple function apparatus cabinet includes thermostatic constant wet control system and electrical isolation system, and thermostatic constant wet control system is main
Cooling system, dehumidification system and the sensing system being separately connected including control system and with it；Sensing system acquisition is more
Temperature and humidity information in function cabinet, and it is sent to control system；Control system controls cooling system using PID controller
And dehumidification system, temperature and humidity adjusting is carried out to multiple function apparatus cabinet；Electrical isolation system is using the shape that voltage-stablizer is isolated
Formula, for the electrical system of the electrical system of electrode equipped system and TBM to be isolated；
Electrical isolation system in multiple function apparatus cabinet mainly realizes that isolation voltage-stablizer is installed on using isolation voltage-stablizer
The downside of multiple function apparatus cabinet, for other electrical systems by the power-supply system of induced polarization exploration instrument (10) and outside TBM
The power-supply system of system is isolated, and ensures induced polarization exploration system in detection process, detectable signal does not pass through supply line
Coupling circuit is constituted with other equipment, to influence or damage other equipment.
In one or more embodiments, a kind of focusing depth measurement type three-dimensional excitation pole being equipped in TBM systems is disclosed
The detection processing method of change method detection system, the specific flow that detects is as shown in fig. 7, comprises following steps：
1) when TBM manufactures and designs, measuring electrode is installed on TBM cutterheads by trepanning, is arranged close to central area in cutterhead
One electrodes of A 0 (13), remaining electrodes of A 1 (8) are arranged in the form of electrode retaining collar on TBM shields and trolley；N1 electricity
Pole (9) is installed on after TBM cutterheads in shield body；
2) when TBM stops excavation operation, TBM cutterheads (5) should retreat to face (1) and keep 10~20cm distances, will
Cutterhead (5) turns to center cutter horizontal position, convenient for arrangement electrode；And support boots are withdrawn, stop that welding machine, motor, other are artificial
The use of electromagnetic field tool；
3) stretching of detection control module the control trolley, cutterhead and shield electrode of induced polarization instrument, and detect simultaneously
The stretching state of electrode, infinite electrode B and infinite electrode N are arranged on the abutment wall of tunnel rear, and infinite electrode B and
Spacing between infinite electrode N should be not less than 200m；
4) contact condition of detecting electrode is distinguished measuring electrode and current electrode, it is ensured that electrode contacts well with country rock；
5) data acquisition, the information such as acquisition apparent resistivity, apparent chargeability, half decay time are carried out；At 3-d inversion imaging
Reason realizes the three-dimensional localization and instream flow estimate to front of tunnel heading unfavorable geologic body (3).
6) detection mission terminates, and detecting module sends out electrode and withdraws instruction, controls the withdrawal of measuring electrode and current electrode,
Detect the retracted position of cutterhead electrode, it is ensured that electrode, which has been withdrawn, to be finished, and the poles infinite electrode B (6), infinite electrode N are withdrawn
Pole (7) and respective cable；
7) when data processing, Outlier rejeetion is carried out to data, induced polarization exploration is obtained using corresponding data processing method
Result map.
The present invention solves the problems, such as TBM construction tunnel induced polarization advanced geology prediction systems and the integrated carryings of TBM, carries
A kind of focusing depth measurement type three-dimensional induced polarization method forward probe system and method that TBM is carried is gone out, advanced visit is carried using TBM
Examining system can quickly obtain gathered data automatically, and can realize the three-dimensional imaging forecast of the prominent mud disaster source of gushing water.
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 (12)
1. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM is carried, which is characterized in that including：Electrode system, electricity
Pole telescopic device and induced polarization exploration instrument；
The electrode system includes measuring electrode M, electrodes of A, the poles infinite electrode B and the poles infinite electrode N, the infinity
Electrode B pole and the poles infinite electrode N are mounted on tunnel side wall, and the measuring electrode M and electrodes of A are stretched by electrode respectively
Compression apparatus is equipped on TBM；The induced polarization exploration instrument controlling electrode telescopic device driving measuring electrode M and current electrode
A's is flexible.
2. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as described in claim 1 is carried, feature exist
In the electrodes of A includes：Electrodes of A 1 and electrodes of A 0, the electrodes of A 0 are mounted on cutterhead, the confession
Electrode A 1 is mounted on TBM shields and/or trolley.
3. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as claimed in claim 2 is carried, feature exist
In when the electrodes of A 1 is mounted on trolley, the flexible electrode telescopic device of driving electrodes of A 1 is by flexural pivot and admittedly
The column connection being scheduled on trolley.
4. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as claimed in claim 2 is carried, feature exist
In the electrode system further includes：N1 electrodes, the N1 electrodes are mounted on TBM cutterheads；By detecting N1 electrodes and current electrode
Resistance between A0 realizes the detection of 0 retracted position of electrodes of A on TBM cutterheads.
5. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as described in claim 1 is carried, feature exist
In the measuring electrode M is mounted on TBM cutterheads, and the electrode system further includes：N1 electrodes, the N1 electrodes are mounted on TBM knives
On disk；The detection of measuring electrode M retracted positions on TBM cutterheads is realized by the resistance detected between N1 electrodes and measuring electrode M.
6. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as described in claim 1 is carried, feature exist
In contacting resistance value between the pole measuring electrode M and infinite electrode N of country rock by measurement, determine measuring electrode M and country rock
Whether contact condition is good；
By resistance value between the electrodes of A and the poles infinite electrode B of measurement contact country rock, electrodes of A and country rock are determined
Contact condition it is whether good.
7. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as described in claim 1 is carried, feature exist
In the electrode telescopic device realizes electrode automatic telescopic using hydraulic-driven；Hydraulic oil cylinder control valve receives induced polarization and visits
The instruction of instrument is surveyed, control hydraulic cylinder drive cylinder bar is flexible, to drive the flexible of the electrode being connect with cylinder rod.
8. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as claimed in claim 7 is carried, feature exist
In the electrode telescopic device further includes：Electrode seals；
The electrode seals include：The sealing device being arranged on cylinder rod and the block being arranged at electrode opening,
The sealing device is moved when electrode is stretched out with cylinder rod, when sealing device moves to the stop location by block
The sealing in gap between electrode and hydraulic cylinder is realized in blocking, the sealing device and block cooperation.
9. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as claimed in claim 8 is carried, feature exist
In the electrode seals further include：In the external bulge-structure being arranged for protecting cutterhead or shield of electrode opening.
10. the focusing depth measurement type three-dimensional induced polarization method detection system that a kind of TBM as described in claim 1 is carried, feature
It is, further includes：Multichannel slewing equipment；The multichannel slewing equipment includes：Multichannel swivel joint and setting are in the multichannel
Quick connector in swivel joint and/or multi-pin connector；The multichannel swivel joint includes：At least two layers concentric return bend and
Several electric slip rings in the concentric revolution outer tube layer are set.
11. the focusing depth measurement type three-dimensional induced polarization method detection method that a kind of TBM is carried, which is characterized in that
The measuring electrode M and electrodes of A that control is mounted on TBM respectively stretch out, and are contacted with country rock；
By resistance value between the measuring electrode M and the poles infinite electrode N being arranged on tunnel side wall of measurement contact country rock, really
Whether good determine measuring electrode M contact conditions；
By resistance value between the electrodes of A and the poles infinite electrode B being arranged on tunnel side wall of measurement contact country rock, really
Whether good determine electrodes of A contact condition；
After measuring electrode M and electrodes of A are contacted with country rock well respectively, induced polarization supplemental characteristic is acquired.
12. the focusing depth measurement type three-dimensional induced polarization method detection method that a kind of TBM as claimed in claim 11 is carried, feature
It is, the electrodes of A includes the electrodes of A 0 being mounted on TBM cutterheads and the confession on shield and/or trolley
Electrode A 1；
During electrode stretches out, by detecting the measuring electrode M being mounted on cutterhead or electrodes of A 0 and being mounted on cutterhead
On N1 electrodes between resistance realize detection to 0 retracted position of measuring electrode M on cutterhead or electrodes of A.
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| US20230228903A1 (en) * | 2022-01-18 | 2023-07-20 | Chinese Academy Of Geological Sciences | Distributed three-dimensional (3d) induced polarization (ip) data acquisition and processing device and method |
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