CN110346368A - A kind of experimental provision and method for studying construction by pipeline jacking method excavation face failure mechanism - Google Patents
A kind of experimental provision and method for studying construction by pipeline jacking method excavation face failure mechanism Download PDFInfo
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- CN110346368A CN110346368A CN201910532580.1A CN201910532580A CN110346368A CN 110346368 A CN110346368 A CN 110346368A CN 201910532580 A CN201910532580 A CN 201910532580A CN 110346368 A CN110346368 A CN 110346368A
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- transparent
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- molding box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
Abstract
The present invention relates to experimental provisions and method that a kind of research construction by pipeline jacking method excavates failure mechanism, comprising: transparent mould molding box；Push pipe mechanism: including push pipe assembly and the jacking mechanism of transparent mould molding box side is set, the push pipe assembly includes cutter-head mechanism, casting vehicle, multiple push pipes that can splice connection, cutterhead can be connect with the push pipe that push pipe assembly end is arranged in, for exploiting transparent soil, guide rail is equipped in push pipe, guide rail can splice in adjacent push pipe, casting vehicle can be slidably connected with guide rail, and the transparent soil that cutter-head mechanism peels off is able to enter casting vehicle；Image acquisition mechanism: at least three laser emitters and camera including transparent mould molding box periphery is arranged in, laser emitter is used for the raw multidimensional speckle section of transparent local products in transparent mould molding box, camera is used to acquire the image at speckle section, camera is connect with host computer, and experimental provision analysis result of the invention is accurate.
Description
Technical field
The present invention relates to underground engineering technical field of experiment equipment, and in particular to a kind of research construction by pipeline jacking method excavation face is broken
Split the experimental provision and method of mechanism.
Background technique
With the rapid development of economy, Tunnel Engineering has obtained unprecedented opportunity to develop, different constructing tunnel sides
Method also connects appearance, and push bench process is one of them.Jacking construction can be to avoid resident living brought by excavation construction and traffic
Interference, and to the destroying infection on environmental architecture basis, reduce the underground job project amount of excavation construction, accelerate no-dig technique
Engineering construction progress shortens the construction period, and work surface is small, and integrated construction is at low cost, its bring is underground pipeline construction
Technological revolution.
Although inventors have found that existing model test apparatus can be derived that before excavation face unstability and after unstability the soil body variation
Situation, but still have disadvantage: can only from macroscopic perspective from the soil body, and experimentation and actual condition are not inconsistent, survey bureau
There are various uncertainties for sex-limited larger, test data distortion and test result.In Patent No. 201810192878.8
State's patent document discloses a kind of transparent soil model experimental rig of novel analog tunnel excavation, the relatively existing experimental provision of the device
For, the deformation of front of tunnel heading soil body when advantage is to reflect tunnel excavation in real time using transparent soil, but inventor
It was found that the bearing-ring device for being used to simulate shield tunneling is too simple and is only capable of representing circular tunnel shield tunneling situation.Patent
It number discloses a kind of tunnel excavation face buckling form based on transparent soil for 201620172378.4 Chinese patent literature and tests
Device dynamically reflect soil body dynamic change also with transparent soil, but inventors have found that it is opened using piston structure simulation tunnel
It digs, is not inconsistent more with actual conditions.
Summary of the invention
It is broken the purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, providing a kind of research construction by pipeline jacking method excavation face
The experimental provision of mechanism is split, operating condition on the spot can be simulated and data acquisition is relatively accurate, the easy easily behaviour of measurement method does, for more
The research of a deep step is laid a solid foundation.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of research construction by pipeline jacking method excavates the experimental provision of failure mechanism, comprising:
Transparent mould molding box: for holding transparent soil.
Push pipe mechanism: including push pipe assembly and the jacking mechanism of transparent mould molding box side, jacking mechanism energy be set
The transparent move in earth for enough push pipe assembly being driven to hold in transparent mould molding box, the push pipe assembly includes cutter-head mechanism, casting
Vehicle, multiple push pipes that can splice connection, cutter-head mechanism can be connect with the push pipe that push pipe assembly end is arranged in, for saturating
Bright soil is exploited, and guide rail is equipped in push pipe, and guide rail can splice in adjacent push pipe, and casting vehicle can be slidably connected with guide rail,
The transparent soil that cutter-head mechanism peels off is able to enter casting vehicle.
Image acquisition mechanism: at least three laser emitters and camera including transparent mould molding box periphery is arranged in, laser
Transmitter is used for the raw multidimensional speckle section of transparent local products in transparent mould molding box, and camera is used to acquire the figure at speckle section
Picture, camera are connect with host computer, can be by the image transmitting of acquisition to host computer.
Further, the see-through model case includes transparent skeleton and the transparent tempering that is fixedly connected with skeleton medial surface
Glass plate.
Further, the tank wall that the transparent mould molding box is located at jacking mechanism side is equipped with opening, push pipe assembly energy
It is enough to be entered inside transparent mould molding box by opening, sealing strip is equipped at the open edge, for sealed opening and push pipe assembly
Between gap.
Further, the jacking mechanism uses jack, and one end of the jack is used to that push pipe assembly to be pushed to move,
The other end is fixedly connected with reaction plate, the reaction plate fixed setting.
Further, strut is equipped in the transparent mould molding box, the strut is described for being supported to push pipe assembly
Strut one end is fixedly connected with the tank wall of transparent mould molding box, and the other end is extend out to outside transparent mould molding box and the fixed company of reaction plate
It connects.
Further, described section of jurisdiction one end is equipped with groove, and the other end is equipped with the boss to match with the groove, adjacent tubes
Piece can pass through groove and boss splicing connection.
Further, the cutter-head mechanism includes clay bin, and the side bulkhead of the clay bin is rotatably connected to multiple rows of scrape
Knife blade, the position between adjacent row doctor blade are provided with multiple casting ducts, the doctor blade and are fixed on clay bin
Bulkhead driving mechanism connection, the clay bin other side bulkhead bottom is equipped with multiple soil-discharging ports, is equipped at soil-discharging port and is used for
Soil in clay bin is discharged into the screw feeding mechanism of casting vehicle.
The invention also discloses the working method that a kind of research construction by pipeline jacking method excavates the experimental provision of failure mechanism, startings
Laser emitter and camera, laser emitter form multidimensional speckle section in transparent soil, and camera acquires the image of speckle section,
Jacking mechanism drives transparent move in earth of the section of jurisdiction assembly in transparent mould molding box, and the cutter-head mechanism of section of jurisdiction assembly end is to transparent
Soil is removed, at the same remove it is transparent soil enter casting vehicle in be discharged, in jack-in process, camera acquisition it is transparent soil deformation front and back
Speckle section image, and by the image transmitting of acquisition to host computer, host computer analyzes image.
Further, machine oil is coated in its exterior lateral sides before push pipe jacking.
Further, the host computer obtains transparent native multidimensional disruptor using the image of PIV technology analysis camera acquisition
Reason.
Beneficial effects of the present invention:
1. experimental provision of the invention uses transparent mould molding box, experimentation is in visible environment, is had multiple
Laser emitter and camera realize the setting of speckle section, and the setting of speckle section so that reflect soil with PIV technology in real time
Body dynamic rule is possibly realized, and overcomes the shortcomings that traditional experiment device can only observe the soil body with macroscopic perspective.
2. experimental provision of the invention, section of jurisdiction assembly includes multiple sections of jurisdiction, also has cutterhead and casting vehicle, and on the outside of section of jurisdiction
Face coats machine oil, the jack-in process that can more really reflect reality under disclosure, and the analysis result of acquisition is more accurate.
3. experimental provision of the invention, laser emitter and camera are at least arranged three, the same of more speckle sections can be carried out
Step experiment is analyzed by PIV technology in real time later by picture transfer to host computer after camera shooting, saturating compared to traditional
The Two-Dimensional Speckle section of bright soil test, experimental result are more accurate.
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 do not constitute the restriction to the application for explaining the application.
Fig. 1 is 1 overall structure diagram of the embodiment of the present invention；
Fig. 2 is 1 transparent mould molding box of the embodiment of the present invention, jacking mechanism and push pipe general assembly schematic diagram；
Fig. 3 is 1 jacking pipe structure schematic diagram of the embodiment of the present invention；
Fig. 4 is 1 cutter head structure schematic diagram of the embodiment of the present invention；
Fig. 5 is 1 casting vehicle of the embodiment of the present invention and push pipe assembling schematic diagram；
Fig. 6 is 1 cutter-head mechanism schematic diagram of the embodiment of the present invention；
Wherein, 1. transparent mould molding box, the side 1-1. tank wall, the front 1-2. tank wall, the rear portion 1-3. tank wall, 1-4. bottom box
Wall, 2. workbench, 3. reaction plates, 4. hydraulic jacks, 5. screws, 6. portal frames, 7. cutterheads, 7-1. doctor blade, 7-2. row
Native duct, 7-3. clay bin, 7-4. first motor, 7-5. casting pipeline, 7-6. feeding spiro rod, the second motor of 7-7., 7-8. pressure
Force snesor, 8. casting vehicles, 9. push pipes, 10. guide rails, 11. struts, 12. laser emitters, 13.CCD camera, 14. tripods,
15. host computer.
Specific embodiment
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 order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the present invention, only expression and attached drawing itself
Upper and lower, left and right direction it is consistent, not to structure rise restriction effect, it is only for convenient for description the present invention and simplification retouch
It states, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, and be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
As background technique is introduced, the existing construction by pipeline jacking method bath scaled model experimental device course of work and actual condition are not
Symbol, measurement limitation is big, measurement result inaccuracy, in view of the above-mentioned problems, present applicant proposes a kind of research construction by pipeline jacking method to open
The experimental provision of digging face failure mechanism.
In a kind of exemplary embodiment embodiment 1 of the application, as shown in figures 1 to 6, a kind of research construction by pipeline jacking method excavation
The experimental provision of face failure mechanism, including the transparent mould molding box 1 and push pipe mechanism for holding transparent soil, push pipe mechanism packet
Include the jacking mechanism and push pipe assembly that transparent mould molding box side is set.The jacking mechanism can drive push pipe assembly transparent
Jacking campaign is done in transparent soil in model casing, to simulate movement of the push pipe in the soil body in jacking, the transparent mould
Molding box periphery is provided with image acquisition mechanism, for giving birth to three-dimensional speckle section to the transparent local products inside transparent mould molding box, and adopts
Collect the image at speckle section.
The transparent mould molding box is rectangular parallelepiped structure, including by two side tank wall 1-1 and front tank wall 1-2, rear portion case
The skeleton that wall 1-3, bottom tank wall 1-4 are constituted, skeleton is made of hard transparent resin material, two side tank walls, rear portion tank wall,
Front tank wall is equipped with groove, is glued in the groove and is fixed with transparent toughened glass plate 1-5, transparent toughened glass plate is as transparent
The inner surface of model casing, front tank wall are equipped with the opening of the rectangle to match with push pipe assembly, and the opening is used as push pipe
Assembly enters the hole inside transparent mould molding box, and the edge of the opening is fixed with the sealing strip made of rubber material, protects
Demonstrate,prove the sealing between push pipe assembly and open edge.
The transparent mould molding box is fixed on workbench 2 by screw 5, and analysis is tied in the shaking avoided in experimentation
Fruit impacts.
The jacking mechanism uses multiple jack, described jack one end pass through the card slot that is arranged on reaction plate 3 with
Reaction plate is fixedly connected, and the other end is used for pushing tow push pipe assembly, and the reaction plate is fixedly connected by bolt with workbench, preferably
, the jack uses hydraulic jack 4, multiple two column of hydraulic jack setting, and each column hydraulic jack is uniformly set above and below
Set, and two column hydraulic jack top edge push pipe assembly width directions axisymmetrical setting, the hydraulic jack with by converted steel
The connection of portal frame 6 made of structure, hydraulic jack are contacted by portal frame with push pipe assembly, and hydraulic jack passes through multiple liquid
When pressing jack pushing tow push pipe assembly, push pipe assembly uniform stressed can be made.
The push pipe assembly includes the push pipe 9 of cutter-head mechanism 7, casting vehicle 8 and multiple sliceable connections, and the push pipe is by saturating
Bright plastic plate is constituted, and section is rectangle, is reduced having a size of practical push pipe size according to setting ratio, a side of the push pipe
Face is equipped with groove 9-1, and another side end face is equipped with the boss 9-2 to match with the groove, and adjacent push pipe can pass through groove
Splice with boss and connect, is connected using groove with the splicing of boss, it is ensured that the splicing leakproofness of adjacent push pipe.
Bottom surface inside the push pipe sets the jacking direction guide rail 10 disposed in parallel there are two with jacking mechanism, adjacent top
The guide rail of pipe can splice, and the guide rail uses lightweight plastic-steel material.
The casting vehicle uses telecar, can be slidably connected with the guide rail inside push pipe.
The cutter-head mechanism can be fixedly connected with the push pipe of push pipe assembly end, and the cutter-head mechanism includes clay bin 7-
3, clay bin can splice with the push pipe of end to be connected, and is provided with the two rows being distributed up and down on the side bulkhead of the clay bin and is scraped
Knife blade 7-1, the quantity of every row's doctor blade are three, and the doctor blade is " ten " font structure, two rows of doctor blades it
Between position setting there are two casting duct 7-2, doctor blade connects with the driving mechanism being arranged on the bulkhead of the clay bin other side
It connects, the driving mechanism uses first motor 7-4, and the first motor is able to drive doctor blade rotation, to transparent mould molding box
Internal transparent soil is removed, and the settable protection board in output shaft periphery of the first motor prevents transparent in clay bin
Soil influences the work of first motor, and the transparent soil of removing can enter clay bin by casting duct, and the first motor is fixed
In the external position of clay bin, the bottom position of clay bin other side bulkhead is provided with multiple soil-discharging ports, connects at soil-discharging port
It is connected to screw feeding mechanism, the screw feeding mechanism includes that tilting upward of connecting with soil silo wall at soil-discharging port position sets
The casting pipeline 7-5 set, the end height of the casting pipeline are greater than the height in casting roof face, and the transparent soil of removing can lead to
It crosses casting pipeline and enters casting vehicle, feeding spiro rod 7-6 is provided in the casting pipeline, the feeding spiro rod and setting are in casting
Second motor 7-7 connection of pipe end, the second motor are connected by the end of belt gear and feeding spiro rod, feeding spiral shell
The both ends of bar are supported using the rolling bearing units being arranged in inside casting pipeline, and feeding spiro rod can be in the effect of the second motor
Transparent soil in clay bin is discharged into casting vehicle by lower rotation.
Pressure sensor 7-8 is also equipped on the bulkhead of the clay bin, for detecting clay bin inner transparent soil to mud
The pressure of native silo wall, thus the work of the second motor of control.
Set inside the transparent mould molding box there are two with jacking mechanism jacking direction strut 11 disposed in parallel, the strut
One end is fixedly connected with the medial surface of rear portion tank wall, and the other end extend out to outside transparent mould molding box and is fixedly connected with reaction plate,
For the strut for being supported to push pipe, the strut uses light plastic material, and preferred diameter is 5mm, does not influence to push up
Into the deformation of transparent soil in the process.
Described image collecting mechanism includes three laser emitters 12 and three cameras, and three laser emitters are used for saturating
Three-dimensional speckle section is formed in transparent soil in bright model casing, it is preferred that three laser emitters are arranged in see-through model
The top of case, the side of transparent mould molding box side tank wall and transparent mould molding box rear portion tank wall side, three cameras are all made of CCD phase
Machine 13, it is preferred that three CCD cameras be arranged in the top of transparent mould molding box, transparent mould molding box side tank wall side and
The side of transparent mould molding box rear portion tank wall, CCD camera and corresponding Laser emission positioned at transparent mould molding box side tank wall side
The ipsilateral setting of device.
The laser emitter and CCD camera are each attached on bracket, and the bracket uses existing tripod 14, can
Adjust the height and angle of laser emitter and CCD camera, tripod uses existing tripod, and specific structure is herein not
It is described in detail.
The CCD camera is connect with host computer 15, and the host computer is placed on the table, and CCD camera can acquire scattered
The image of spot section, and by the image transmitting of acquisition to host computer, host computer can analyze the image of acquisition, and then
To the Three-Dimensional fracture mechanism of transparent soil.
The elements such as the hydraulic jack, laser emitter, screw feeding mechanism, first motor, pressure sensor also with
Host computer connection, by its work of PC control.
Embodiment 2:
Present embodiment discloses a kind of working methods of experimental provision for studying construction by pipeline jacking method excavation face failure mechanism:
The actual condition design transparent mould molding box size simulated as needed, determines push pipe size, buried depth and transparent soil
The depth of fill；Transparent mould molding box is designed by design size, and the opening for completing push pipe jacking opens up, and pacified at open edge
Fill sealing strip.
Cutterhead is fixedly connected with a push pipe, and is placed at aperture position, is supported using strut.
Configure transparent soil, in the present embodiment, the transparent soil is made to select with vitreous silica particle similar in actual condition
For solid particle, the mixture of white mineral oil and solvent naphtha mixes carbon nanomaterial as trace particle as pore-fluid
Manufactured speckle field.
By in transparent soil merging transparent mould molding box, it is placed into setting height.
Starting laser emitter and CCD camera, laser emitter forms stable three-dimensional speckle section in transparent soil,
CCD camera can acquire the image of speckle section, and be transferred to host computer.
Start hydraulic jack, hydraulic jack pushing tow push pipe enters in transparent mould molding box, and utilizes the scraper on cutterhead
Blade exploits transparent soil, after hydraulic jack pushing tow set distance, retracts, adds another push pipe manually, hydraulic jack is again
Secondary carry out pushing tow successively carries out pushing tow advance to push pipe using identical method, and in push pipe jack-in process, CCD camera is adopted in real time
Collect the image of transparent soil deformation front and back speckle section position, and send host computer to, host computer is using PIV technology to the figure of acquisition
As being handled, the Three-Dimensional fracture mechanism of transparent soil is obtained.
In jack-in process, it can be remotely controlled casting vehicle, casting vehicle is moved to screw feeding mechanism end lower position, and screw rod is sent
Expect the transparent soil feeding casting vehicle into clay bin that mechanism can remove doctor blade.
In the present embodiment, machine oil is coated in the outer surface of push pipe, for reducing the frictional force between push pipe and transparent soil, mould
In quasi- actual condition, reduce the operating condition of frictional force using gap between dredge pump offer mud filling section of jurisdiction and country rock.
In the present embodiment, the jacking distance that host computer adjusts hydraulic jack can use, and adjust and swash using tripod
The position of optical transmitting set and CCD camera, can carry out multiple groups experiment, and analysis result is more accurate.
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 (10)
1. the experimental provision that a kind of research construction by pipeline jacking method excavates failure mechanism characterized by comprising
Transparent mould molding box: for holding transparent soil；
Push pipe mechanism: including push pipe assembly and the jacking mechanism of transparent mould molding box side is set, the jacking mechanism can drive
The transparent move in earth that dynamic push pipe assembly is held in transparent mould molding box, the push pipe assembly include cutter-head mechanism, casting vehicle, more
A push pipe that can splice connection, cutter-head mechanism can be connect with the push pipe that push pipe assembly end is arranged in, for transparent soil
It is exploited, guide rail is equipped in push pipe, guide rail can splice in adjacent push pipe, and casting vehicle can be slidably connected with guide rail, cutterhead
The transparent soil peeled off is able to enter casting vehicle；
Image acquisition mechanism: at least three laser emitters and camera including transparent mould molding box periphery is arranged in, Laser emission
Device is used for the raw multidimensional speckle section of transparent local products in transparent mould molding box, and camera is used to acquire the image at speckle section, phase
Machine is connect with host computer, can be by the image transmitting of acquisition to host computer.
2. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
State the transparent toughened glass plate that see-through model case includes transparent skeleton and is fixedly connected with skeleton medial surface.
3. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
State transparent mould molding box be located at jacking mechanism side tank wall be equipped with opening, push pipe assembly can by opening enter transparent mould
Inside molding box, sealing strip is equipped at the open edge, for the gap between sealed opening and push pipe assembly.
4. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
Jacking mechanism is stated using jack, for pushing push pipe assembly to move, the other end is fixed with reaction plate for one end of the jack
Connection, the reaction plate fixed setting.
5. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
It states and is equipped with strut in transparent mould molding box, the strut is for being supported push pipe assembly, described strut one end and see-through model
The tank wall of case is fixedly connected, and the other end extend out to outside transparent mould molding box and is fixedly connected with reaction plate.
6. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
Section of jurisdiction one end is stated equipped with groove, the other end is equipped with the boss to match with the groove, and adjacent section of jurisdiction can be by groove and convex
Platform splicing connection.
7. the experimental provision that a kind of research construction by pipeline jacking method as described in claim 1 excavates failure mechanism, which is characterized in that institute
Stating cutter-head mechanism includes clay bin, and the side bulkhead of the clay bin is rotatably connected to multiple rows of doctor blade, adjacent row scraper knife
Position between piece is provided with multiple casting ducts, and the driving mechanism of the doctor blade and the bulkhead for being fixed on clay bin connects
It connects, the clay bin other side bulkhead bottom is equipped with multiple soil-discharging ports, is equipped at soil-discharging port for soil in clay bin to be discharged into
The screw feeding mechanism of navy barrow.
8. the work side that a kind of described in any item research construction by pipeline jacking method of claim 1-7 excavate the experimental provision of failure mechanism
Method, which is characterized in that starting laser emitter and camera, laser emitter form multidimensional speckle section, camera in transparent soil
The image of speckle section is acquired, jacking mechanism drives transparent move in earth of the section of jurisdiction assembly in transparent mould molding box, section of jurisdiction assembly
The cutter-head mechanism of end removes transparent soil, at the same remove it is transparent soil enter casting vehicle in be discharged, in jack-in process, phase
Machine acquires the image of the speckle section of transparent soil deformation front and back, and by the image transmitting of acquisition to host computer, host computer is to image
It is analyzed.
9. working method as claimed in claim 8, which is characterized in that coat machine oil in its exterior lateral sides before push pipe jacking.
10. working method as claimed in claim 8, which is characterized in that the host computer is using the analysis camera acquisition of PIV technology
Image, obtain transparent native multidimensional failure mechanism.
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