CN110424979A - Simulate the indoor model conduit jacking of earth pressure balanced jacking construction - Google Patents
Simulate the indoor model conduit jacking of earth pressure balanced jacking construction Download PDFInfo
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- CN110424979A CN110424979A CN201910792396.0A CN201910792396A CN110424979A CN 110424979 A CN110424979 A CN 110424979A CN 201910792396 A CN201910792396 A CN 201910792396A CN 110424979 A CN110424979 A CN 110424979A
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- tube coupling
- unearthed
- jacking
- head
- soil
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 230000008878 coupling Effects 0.000 claims abstract description 177
- 238000010168 coupling process Methods 0.000 claims abstract description 177
- 238000005859 coupling reaction Methods 0.000 claims abstract description 177
- 239000002689 soil Substances 0.000 claims abstract description 42
- 238000005192 partition Methods 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000007569 slipcasting Methods 0.000 claims description 24
- 239000004927 clay Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009955 starching Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 206010023230 Joint stiffness Diseases 0.000 abstract description 7
- 210000004911 serous fluid Anatomy 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Abstract
The invention belongs to underground engineering experimental technique fields, specifically provide a kind of indoor model conduit jacking for simulating earth pressure balanced jacking construction, including push pipe head and tube coupling, and push pipe head is connect for cutting driving, tube coupling with push pipe head；It is provided with oblique funnelform Tu Cang in push pipe head, avoids soil in native storehouse and is sticked to native storehouse partition side wall and influences to be unearthed, tube coupling excavating transporting device is provided in tube coupling；Tube coupling is provided with multiple, and multiple tube couplings are connected in turn, and the soil that push pipe head driving generates is transported out in tube coupling.The present invention solves the problems, such as that existing small-sized push pipe indoor model device is unearthed and is not easy, so that jacking length is no longer limited by screw conveyor captain's degree in jack-in process, can simulate and continue jacking over long distances；The influence of joint stiffness and grouting serous fluid buoyancy to jacking between the tube coupling that existing apparatus can not be considered can be simulated, and tube coupling assembly continues long range jacking and more meets actual condition compared to monoblock type tube coupling jacking.
Description
Technical field
The invention belongs to underground engineering experimental technique fields, and in particular to a kind of room for simulating earth pressure balanced jacking construction
Interior model conduit jacking.
Background technique
Push bench process is a kind of non-excavation underground tunnel construction method being widely used at present.Indoor model test is research top
Tube method construction is to the important way for pushing up the parameters such as power in formation influence and jack-in process, by simulating jacking construction jacking
Journey provides reliable basis for the design and construction of pipe jacking tunnel.It is found through being retrieved to existing technical literature, Chinese Patent Application No.
201910057792.9, denomination of invention: a kind of laboratory test simulation system of jacking construction, the patented technology disclose a kind of top
The indoor model test simulation system of pipe construction, comprising: model casing, guide rail limiting mechanism, push pipe mechanism, clay cutter structure, slip casting
System and system for monitoring displacement.The system can simulate the processes such as jacking construction driving, unearthed, slip casting, but due to push-bench
Structure is one whole steel pipe, can not simulate the tube coupling assembly process in jacking construction and cannot be considered in terms of the similar of joint stiffness between pipe；
Guide rail limiting mechanism and push pipe mechanism are rigidly connected, so that push pipe can only move in jack-in process along guide rail, can not consider
Influence of the mud buoyancy for jacking pipe joints relative position under slip casting state；Since the screw conveyor duct length the long more is unfavorable for
It is unearthed, is limited to push pipe mechanism tube coupling length and screw conveyor duct length, which can not also simulate long range jack-in process.
Above two patented technology is all made of the vertical clapboard for being parallel to push pipe longitudinal section in the design of native storehouse partition, and such design is normal
With with large-scale pipe jacking equipment, but for bench model conduit jacking, Tu Cang is smaller, and native storehouse partition and cutterhead are apart from closer, top
Into when support pressure it is also more much smaller than large-scale push pipe support pressure, using vertical native storehouse partition, be easy to cause the soil body be stained with stick every
On plate, it is unfavorable for screw conveyor machine and is unearthed, is also unfavorable for that support pressure is maintained to stablize.Above-mentioned push pipe model test apparatus is
System not can completely simulation jacking construction whole operating conditions, there is limitation.
Accordingly, it is desirable to provide a kind of be directed to the insufficient improved technology scheme of the above-mentioned prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of indoor model conduit jackings for simulating earth pressure balanced jacking construction, solve
Existing small-sized push pipe indoor model device is unearthed the problem of being not easy, so that jacking length is no longer limited by spiral in jack-in process
Earth output machine length can be simulated and continue jacking over long distances；Joint stiffness between the tube coupling that existing apparatus can not be considered can be simulated
And influence of the grouting serous fluid buoyancy to jacking, and tube coupling assembly continues long range jacking and more meets compared to the jacking of monoblock type tube coupling
Actual condition.
To achieve the goals above, the invention provides the following technical scheme:
A kind of indoor model conduit jacking for simulating earth pressure balanced jacking construction, including push pipe head and tube coupling, it is described
Push pipe head is connect for cutting driving, the tube coupling with the push pipe head；
The push pipe head includes handpiece case, clay cutter structure, Tu Cang and unearthed mechanism；The handpiece case is cylinder
Shape；The clay cutter structure is located at the front end of the handpiece case, carries out cutting driving for treating jacking construction region；The soil
Position in storehouse cuts the soil to fall off for accommodating the clay cutter structure in the handpiece case at clay cutter structure rear；It is described to be unearthed
Mechanism is located in the handpiece case, for the soil in the native storehouse to be sent out the handpiece case.
The tube coupling includes tube coupling shell and tube coupling excavating transporting device；The tube coupling shell is cylindrical shape, the tube coupling
One end of shell is connect with the handpiece case；The tube coupling excavating transporting device is arranged in the tube coupling shell, and being used for will
The soil of tube coupling shell one end is transported to other end discharge；The tube coupling is provided with multiple, and multiple tube couplings are sequentially connected,
The soil that the push pipe head driving generates is transmitted and is transported away by multiple tube coupling.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
The barrel of tube coupling shell is provided with slip casting preformed hole, and the inner wall of the tube coupling shell is provided with slip casting and reserves tube head, the slip casting
One end of reserved tube head is connect with the slip casting preformed hole.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Clay cutter structure includes cutting native cutterhead and cutterhead power device；The front end cut native cutterhead and be located at the handpiece case, it is described to cut
The rotation axis of native cutterhead is overlapped with the axis of the handpiece case, and the cutterhead power device is arranged in the handpiece case,
Described native cutterhead rotation is cut for driving.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Native storehouse partition is provided in handpiece case, soil storehouse partition, the handpiece case and described cut are enclosed between native cutterhead
Tu Cang, soil storehouse partition are obliquely installed, the top of soil storehouse partition and the distance between the front end face of the handpiece case
For L1, the distance between the bottom end of soil storehouse partition and the front end face of the handpiece case are L2, and meet L1< L2；It is described
It is provided with bell mouth on the native storehouse partition in native orlop portion, for the soil in native storehouse to be discharged.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Unearthed mechanism includes screw conveyor machine and head excavating transporting device；The screw conveyor machine include be unearthed pipeline, screw rod and
The feed end of screw power device, the unearthed pipeline is goed deep into the native storehouse by the bell mouth, the spiral power dress
Install the discharge end in the unearthed pipeline, the screw rod is arranged in the unearthed pipeline and from the unearthed pipeline
Feed end extends out, and the side wall of the unearthed pipeline discharge end is provided with drain spout；Described in the screw power device driving
Screw rod rotation, for the soil of the unearthed pipeline feed end to be transmitted to drain spout discharge；The head excavating transporting device
It is unearthed driving device including be unearthed conveyer belt and head of head, the head is unearthed driving device for driving the head to be unearthed
Conveyer belt operating, the be unearthed feed end of conveyer belt of the head are located at the lower section of the drain spout, and the head is unearthed conveyer belt
Delivery end be located at the end of the handpiece case；Preferably, the bell mouth of the feed end of the unearthed pipeline and the Tu Cang
Connection, the screw rod protrude into the native storehouse.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Tube coupling excavating transporting device is conveyer device, and the feed end and delivery end of the tube coupling excavating transporting device are located at described
The front-end and back-end of tube coupling, the lower section of horizontal plane, described where the feed end of the tube coupling excavating transporting device is located at delivery end
The horizontal distance that tube coupling is unearthed between the feed end and delivery end of transmission device is greater than or equal to the length of the tube coupling shell；Institute
The delivery end for stating the delivery end and the tube coupling excavating transporting device of head excavating transporting device is located in the same horizontal plane.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Tube coupling excavating transporting device includes the unearthed conveyer belt of tube coupling, roller bearing, hold-down support and transport motor, the hold-down support and transmission
The inner wall of tube coupling shell is arranged in motor, and the hold-down support is for carrying the roller bearing, and there are two the roller bearing settings, and two
The roller bearing is located at the both ends of the unearthed conveyer belt of tube coupling, and the unearthed conveyer belt of the tube coupling is tightened, is located at outside the tube coupling
Roller bearing one end of shell end is provided with belt pulley, and transport motor drives the pulley rotation, and the roller bearing is driven to rotate, thus
Make the tube coupling unearthed conveyer belt that soil is sent to delivery end from feed end.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
It is connected and fixed between tube coupling and the push pipe head by threaded fastener, the junction of the tube coupling and the push pipe head is set
It is equipped with elastic seal ring；It is connected and fixed between tube coupling described in two adjacent sections by threaded fastener, is managed described in two adjacent sections
The junction of section is provided with elastic seal ring.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
Threaded fastener and to be provided with elastomeric pad between connecting portion；Preferably, the elastomeric pad is disk spring.
The indoor model conduit jacking of earth pressure balanced jacking construction is simulated as described above, it is preferably, described
The outer diameter of handpiece case is greater than or equal to the outer diameter of the tube coupling shell.
Compared with the immediate prior art, technical solution provided by the invention is had the following beneficial effects:
The indoor model conduit jacking of the earth pressure balanced jacking construction of simulation provided by the invention, by optimizing and revising head
Native storehouse partition shape solves the problems, such as that existing small-sized push pipe indoor model device is unearthed and is not easy, and is more advantageous to control Tu Cang pressure
Power is stablized；By independent tube coupling, independent tube coupling is unearthed conveyer belt, so that jacking length is no longer limited by spiral and goes out in jack-in process
Native captain's degree can simulate and continue jacking over long distances；Existing apparatus can be simulated in such a way that connector between tube coupling is assembled can not
The influence of joint stiffness and grouting serous fluid buoyancy to jacking between the tube coupling considered, and tube coupling assembly continues long range jacking and compares
More meet actual condition in monoblock type tube coupling jacking.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is conduit jacking of embodiment of the present invention structural schematic diagram；
Fig. 2 is the tube coupling structural side view of the embodiment of the present invention；
Fig. 3 is partial enlarged view at A in Fig. 1.
In figure: 1, push pipe head；2, handpiece case；3, native cutterhead is cut；4, cutterhead power device；5, Tu Cang；6, tube coupling；7,
Native storehouse partition；8, tube coupling shell；9, tube coupling excavating transporting device；10, tube head is reserved in slip casting；11, screw conveyor machine；12, head
Excavating transporting device；13, be unearthed pipeline；14, screw rod；15, screw power device；16, the unearthed conveyer belt of tube coupling；17, tube coupling
Preceding roller bearing；18, roller bearing after tube coupling；19, hold-down support；20, transport motor；23, elastic seal ring；24, bolt；25, elastic cushion
Piece；26, drain spout.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
According to an embodiment of the invention, as shown in Figure 1 to Figure 3, the present invention provides a kind of earth pressure balanced push pipe of simulation and applies
The indoor model conduit jacking of work, including push pipe head 1 and tube coupling 6, push pipe head 1 is for tunneling, tube coupling 6 and push pipe head 1
Connection.
Push pipe head 1 includes handpiece case 2, clay cutter structure, native storehouse 5 and unearthed mechanism；Handpiece case 2 is cylindrical shape.It cuts
Native mechanism is located at the front end of handpiece case 2, carries out cutting driving for treating jacking construction region.Native storehouse 5 is located at clay cutter structure
In the handpiece case 2 at rear, the soil to fall off is cut for accommodating clay cutter structure.Mechanism of being unearthed is located in handpiece case 2, and being used for will
Soil in native storehouse 5 sends out handpiece case 2.
Tube coupling 6 includes tube coupling shell 8 and tube coupling excavating transporting device 9；Tube coupling shell 8 is cylindric, and the one of tube coupling shell 8
End is connect with handpiece case 2；Tube coupling excavating transporting device 9 is arranged in tube coupling shell 8, for by the soil of 8 one end of tube coupling shell
It is transported to other end discharge.
Tube coupling 6 is provided with multiple, and multiple tube couplings 6 are sequentially connected, and the soil that the driving of push pipe head 1 generates is passed through multiple tube couplings
6 transmit and transport away.
When in use, tube coupling 6 is gradually added according to jacking construction progress, is no longer limited by jacking length in jack-in process
The length of push pipe, and tube coupling excavating transporting device 9 is provided in each tube coupling 6, it can be achieved that soil is cut in transmission step by step, it solves
Single screw conveyor machine 11 transmits native low efficiency over long distances, is easy the problem of blocking.
It for ease of description, in this embodiment, is front close to the direction of development end along jacking construction tunneling direction,
Direction far from development end is rear, corresponding, and push pipe head 1 or tube coupling 6 are front end close to the one end in front, close to rear
One end be rear end or end.
Further, tube coupling shell 8 is made of hollow thin-wall steel tube, and it is reserved that the barrel of tube coupling shell 8 is provided with slip casting
Hole, the inner wall of tube coupling shell 8 are provided with slip casting and reserve tube head 10, and one end that tube head 10 is reserved in slip casting is connect with slip casting preformed hole.
In the present embodiment, slip casting preformed hole is provided with multiple, and multiple slip casting preformed holes are distributed in the barrel of tube coupling shell 8, is being used
When can be needed to select the slip casting preformed hole of suitable quantity, suitable distribution to carry out slip casting according to slip casting, block other before slip casting
Slip casting preformed hole.
Further, clay cutter structure includes cutting native cutterhead 3 and cutterhead power device 4；
The front end that native cutterhead 3 is located at handpiece case 2 is cut, the rotation axis for cutting native cutterhead 3 is overlapped with the axis of handpiece case 2,
Cutterhead power device 4 is arranged in handpiece case 2, cuts the native rotation of cutterhead 3 for driving.Specifically: it is provided in handpiece case 2
It is provided with bearing on support, the support and native storehouse partition 7, the rotation axis for cutting native cutterhead 3 is mounted in above-mentioned bearing.Cutterhead is dynamic
Power device 4 is specially cutter motor, and the gear on the output shaft of cutter motor is nibbled with the gear on the transmission shaft for cutting native cutterhead 3
It closes, cutter motor drive is cut native cutterhead 3 and rotated, and realizes cutting driving.
Further, be provided with native storehouse partition 7 in handpiece case 2, native storehouse partition 7, handpiece case 2 and cut native cutterhead 3 it
Between be enclosed native storehouse 5, native storehouse partition 7 is obliquely installed, and makes native storehouse 5 in oblique funnel-form, the top of native storehouse partition 7 and handpiece case
The distance between 2 front end face is L1, the distance between the bottom end of native storehouse partition 7 and the front end face of handpiece case 2 are L2, and it is full
Sufficient L1< L2；It is provided with bell mouth on the native storehouse partition 7 of native 5 bottom of storehouse, for the soil in native storehouse 5 to be discharged.In small-sized push bench
In first 1, since 5 pressure of soil storehouse is much smaller when native 7 distance of storehouse partition cuts closer native cutterhead 3 and native 5 pressure ratio large size push pipe of storehouse,
Using vertical native storehouse partition 7, the soil body is easy to be stained with the inner wall sticked in native storehouse partition 7, is unfavorable for being unearthed, and be unfavorable for maintaining native storehouse 5
Pressure is stablized.The outer diameter of the push pipe head 1 and tube coupling 6 that are generally used due to model test is all smaller (much smaller than practical
The outer diameter of push pipe head or tube coupling in work), the present invention is designed using oblique funnel-form soil storehouse 5, in head jacking
Native 5 pressure of storehouse is easier soil to squeeze into screw conveyor machine 11 along native storehouse partition 7, is more advantageous to and is unearthed and maintains native 5 pressure of storehouse steady
It is fixed, it avoids native 5 inner product of storehouse native and influences to cut the normal operation of native cutterhead 3, to make test result more true and accurate.
Further, unearthed mechanism includes screw conveyor machine 11 and head excavating transporting device 12；Screw conveyor machine 11 wraps
Native pipeline 13, screw rod 14 and screw power device 15 are included, the feed end for the pipeline 13 that is unearthed gos deep into native storehouse 5 by bell mouth
Interior, screw power device 15 is arranged in the discharge end for the pipeline 13 that is unearthed, and screw rod 14 is arranged in unearthed pipeline 13 and from unearthed
The feed end of pipeline 13 extends out, and the side wall for 13 discharge end of pipeline that is unearthed is provided with drain spout 26；Screw power device 15 drives
Dynamic screw rod 14 rotates, and is discharged for the soil of unearthed 13 feed end of pipeline to be transmitted to drain spout 26.
Head excavating transporting device 12 includes the unearthed conveyer belt of head and the unearthed driving device of head, and head, which is unearthed, drives dress
It sets for driving the unearthed conveyer belt operating of head, the feed end of the unearthed conveyer belt of head is located at the lower section of drain spout 26, and head goes out
The delivery end of native conveyer belt is located at the end of handpiece case 2；Preferably, the bell mouth of the feed end of unearthed pipeline 13 and native storehouse 5
Connection, screw rod 14 protrude into native storehouse 5.Head is unearthed driving device using motor.The structure and pipe of head excavating transporting device
It is identical to save 9 structure of excavating transporting device, subsequent to have the description of 9 structure of tube coupling excavating transporting device, details are not described herein again.
Further, tube coupling excavating transporting device 9 is conveyer device, the feed end of tube coupling excavating transporting device 9 and is unloaded
Material end is located at the front-end and back-end of tube coupling 6, horizontal plane where the feed end of tube coupling excavating transporting device 9 is located at delivery end
Lower section, the horizontal distance between the feed end and delivery end of tube coupling excavating transporting device 9 are greater than or equal to the length of tube coupling shell 8
Degree；The delivery end of head excavating transporting device 12 and the delivery end of tube coupling excavating transporting device 9 are located in the same horizontal plane.Tube coupling
Excavating transporting device 9 includes the unearthed conveyer belt 16 of tube coupling, roller bearing, hold-down support 19 and transport motor 20, hold-down support 19 and biography
The inner wall of tube coupling shell 8 is arranged in power transmission machine 20, and hold-down support is for carrying roller bearing, and there are two roller bearing settings, two roller bearings point
Not Wei Yu tube coupling be unearthed the both ends of conveyer belt 16, the tube coupling conveyer belt 16 that is unearthed is tightened, the roller bearing one positioned at 8 end of tube coupling shell
End is provided with belt pulley, and the rotation of 20 driving belt pulley of transport motor drives roller bearing rotation, so that so that tube coupling is unearthed conveyer belt 16 will
Soil is sent to delivery end from feed end.In the present embodiment, the rolling of tube coupling excavating transporting device 9 and head excavating transporting device 12
Shaft diameter is all identical, and for ease of description, the roller bearing of 9 front-end and back-end of tube coupling excavating transporting device is referred to as roller bearing before tube coupling
17 and tube coupling after roller bearing 18, the roller bearing of 12 front-end and back-end of head excavating transporting device is referred to as before head after roller bearing and head
Roller bearing.The delivery end conveyer belt of head excavating transporting device 12 exceeds the diameter of roller bearing after the head of 0.5 times of 1 rear end of push pipe head
(axis of roller bearing is located in the plane where 2 end of handpiece case i.e. after head), it is higher than 9 conveyer belt of tube coupling excavating transporting device
(the distance between roller bearing and axis of roller bearing 17 before corresponding tube coupling are 1.5 times of rollings to 1.5 times of front end roller bearing diameter i.e. after head
Shaft diameter).The front end of tube coupling excavating transporting device 9 beyond 0.5 times of 8 front end face of tube coupling shell tube coupling before 17 diameter of roller bearing (i.e.
The axis of roller bearing 17 is located in the plane where corresponding 8 front end of tube coupling shell before tube coupling)；Tube coupling excavating transporting device 9
Beyond 18 diameter of roller bearing after the tube coupling of 0.5 times of 8 rear end face of tube coupling shell, (axis of roller bearing 18 is located at corresponding i.e. after tube coupling for rear end
8 rear end of tube coupling shell where plane in).The rear end of tube coupling excavating transporting device 9 is higher than the roller bearing diameter of 1.5 times of front end
(axis of roller bearing 18 is higher by 1.5 times of roller bearing diameter than the horizontal plane where the axis of roller bearing 17 before tube coupling i.e. after tube coupling).On
Stating measure can transmit to push pipe head 1 and tube coupling 6 soil during jacking is unearthed after the completion of guaranteeing assembly from head is unearthed
Device 12 is fallen on tube coupling excavating transporting device 9, then is sent to back segment tube coupling 6 until soil is sent out outside tunnel by leading portion tube coupling 6.
Strip length and unearthed 16 length of conveyer belt of tube coupling are transmitted not except head is unearthed in above-mentioned head excavating transporting device 12
With outside, remaining each component part is identical in material parameter, size as each component part in tube coupling excavating transporting device 9.
Further, it is connected and fixed between tube coupling 6 and push pipe head 1 by threaded fastener, tube coupling 6 and push pipe head 1
Junction be provided with elastic seal ring 23；It is connected and fixed between adjacent 2-section pipe section 6 by threaded fastener, adjacent two
The junction of section tube coupling 6 is provided with elastic seal ring 23.Threaded fastener and to be provided with elastomeric pad 25 between connecting portion；
Preferably, elastomeric pad 25 is disk spring.Elastic seal ring 23 is rubber washer, and threaded fastener is selected bolt 24, pushed up
Threaded hole is arranged in pipe die 1 and 6 end of tube coupling and 24 cooperation position of bolt, in this way when adding tube coupling 6, it is only necessary to tube coupling
Bolt 24 is protruded into installation site at 6 distal openings, is screwed in corresponding threaded hole, cooperates compared to 24 nut of bolt and connects
It connects, it is contemplated herein that small space nut is inconvenient to the problem fixed, it is easy to operate.By joint, elastic seal ring 23 is set
It can play the role of sealing, in the present embodiment, elastic seal ring 23 is provided with more according to thickness difference, elasticity modulus difference
Weight-normality lattice.Elastomeric pad 25 is cooperated to use, 6 joint stiffness of construction tube coupling that can be simulated in different work progress (passes through selection
The rubber washer and elastomeric pad 25 of different size are realized).Connection type between adjacent tube coupling 6 is identical with this, herein no longer
It repeats.
Further, the outer diameter of handpiece case 2 is greater than or equal to the outer diameter of tube coupling shell 8.Handpiece case 2 when in use
Ratio between outer diameter and the outer diameter of tube coupling shell 8 needs the ratio with 6 outer diameter of head and tube coupling when the theory of similarity and practice of construction
Example carries out scaling.
The rotation speed of the velocity of rotation of native cutterhead 3, the driving torque for cutting native cutterhead 3, screw conveyor machine 11 is cut in the present invention
Joint stiffness, slip casting preformed hole percent opening between degree, adjacent tube coupling 6 etc. can be calculated by the theory of similarity and determine similar scale
After adjusted, therefore the technical program have versatility, long-distance pipe jacking jacking can be comprehensively simulated under various working
The overall process of the constructions such as jacking, unearthed, slip casting, 6 assembly of tube coupling is excavated in journey.
In conclusion the indoor model conduit jacking of the earth pressure balanced jacking construction of simulation provided by the invention, by excellent
Change adjustment head soil storehouse partition shape, solves the problems, such as that existing small-sized push pipe indoor model device is unearthed and be not easy, be more advantageous to
Support pressure is controlled to stablize；By independent tube coupling, independent tube coupling is unearthed conveyer belt so that in jack-in process jacking length no longer by
It is limited to screw conveyor captain's degree, can simulates and continue jacking over long distances；It can be simulated in such a way that connector between tube coupling is assembled existing
The influence of joint stiffness and grouting serous fluid buoyancy to jacking between the tube coupling for having device that can not consider, and tube coupling assembly persistently grow away from
More meet actual condition compared to monoblock type tube coupling jacking from jacking.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of indoor model conduit jacking for simulating earth pressure balanced jacking construction, which is characterized in that including push pipe head and
Tube coupling, the push pipe head are connect for cutting driving, the tube coupling with the push pipe head；
The push pipe head includes:
Handpiece case, the handpiece case are cylindrical shape；
Clay cutter structure, the clay cutter structure are located at the front end of the handpiece case, are cut for treating jacking construction region
Driving；
Tu Cang, the soil position in storehouse take off in the handpiece case at clay cutter structure rear for accommodating the clay cutter structure cutting
The soil fallen；
Unearthed mechanism, the unearthed mechanism are located in the handpiece case, for the soil in the native storehouse to be sent out the machine
Head shell；
The tube coupling includes:
Tube coupling shell, the tube coupling shell are cylindrical shape, and one end of the tube coupling shell is connect with the handpiece case；
Tube coupling excavating transporting device, the tube coupling excavating transporting device are arranged in the tube coupling shell, are used for the tube coupling
The soil of shell one end is transported to other end discharge；
The tube coupling is provided with multiple, and multiple tube couplings are sequentially connected, and the soil that the push pipe head driving generates passes through multiple
The tube coupling is transmitted and is transported away.
2. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as described in claim 1, which is characterized in that institute
The barrel for stating tube coupling shell is provided with slip casting preformed hole, and the inner wall of the tube coupling shell is provided with slip casting and reserves tube head, the note
The one end for starching reserved tube head is connect with the slip casting preformed hole.
3. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as described in claim 1, which is characterized in that institute
Stating clay cutter structure includes cutting native cutterhead and cutterhead power device；
The front end cut native cutterhead and be located at the handpiece case, the axis of the rotation axis for cutting native cutterhead and the handpiece case
Line is overlapped, and the cutterhead power device is arranged in the handpiece case, described cuts native cutterhead rotation for driving.
4. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as claimed in claim 3, which is characterized in that institute
It states and is provided with native storehouse partition in handpiece case, soil storehouse partition, the handpiece case and described cut enclose shape between native cutterhead
Cheng Tucang, the soil storehouse partition are obliquely installed, between the top of soil storehouse partition and the front end face of the handpiece case away from
From for L1, the distance between the bottom end of soil storehouse partition and the front end face of the handpiece case are L2, and meet L1< L2；Institute
It states and is provided with bell mouth on the native storehouse partition in native orlop portion, for the soil in native storehouse to be discharged.
5. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as claimed in claim 4, which is characterized in that institute
Stating unearthed mechanism includes screw conveyor machine and head excavating transporting device；
The screw conveyor machine includes that unearthed pipeline, screw rod and screw power device, the feed end of the unearthed pipeline pass through
The bell mouth is goed deep into the native storehouse, and the discharge end of the unearthed pipeline, the spiral is arranged in the screw power device
Bar is arranged in the unearthed pipeline and extends out from the feed end of the unearthed pipeline, the side of the unearthed pipeline discharge end
Wall is provided with drain spout；The screw power device drives the screw rod rotation, for by the unearthed pipeline feed end
Soil is transmitted to drain spout discharge；
The head excavating transporting device includes the unearthed conveyer belt of head and the unearthed driving device of head, and the head, which is unearthed, to be driven
For device for driving the unearthed conveyer belt operating of the head, the feed end of the unearthed conveyer belt of the head is located at the drain spout
The delivery end of lower section, the unearthed conveyer belt of the head is located at the end of the handpiece case；
Preferably, the feed end of the unearthed pipeline is connect with the bell mouth of the Tu Cang, and the screw rod protrudes into the Tu Cang
It is interior.
6. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as claimed in claim 5, which is characterized in that institute
Stating tube coupling excavating transporting device is conveyer device, and the feed end and delivery end of the tube coupling excavating transporting device are located at institute
The front-end and back-end of tube coupling are stated, the lower section of horizontal plane, institute where the feed end of the tube coupling excavating transporting device is located at delivery end
State the length that the horizontal distance between the feed end and delivery end of the unearthed transmission device of tube coupling is greater than or equal to the tube coupling shell；
The delivery end of the delivery end of the head excavating transporting device and the tube coupling excavating transporting device is located at same level
It is interior.
7. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as claimed in claim 6, which is characterized in that institute
Stating tube coupling excavating transporting device includes the unearthed conveyer belt of tube coupling, roller bearing, hold-down support and transport motor, the hold-down support and biography
The inner wall of tube coupling shell is arranged in power transmission machine, and the hold-down support is for carrying the roller bearing, and there are two the roller bearing settings, and two
A roller bearing is located at the both ends of the unearthed conveyer belt of tube coupling, and the unearthed conveyer belt of the tube coupling is tightened, the tube coupling is located at
Roller bearing one end of casing ends is provided with belt pulley, and transport motor drives the pulley rotation, and the roller bearing is driven to rotate, from
And make the tube coupling unearthed conveyer belt that soil is sent to delivery end from feed end.
8. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as described in claim 1, which is characterized in that institute
It states and is connected and fixed between tube coupling and the push pipe head by threaded fastener, the junction of the tube coupling and the push pipe head
It is provided with elastic seal ring；It is connected and fixed between tube coupling described in two adjacent sections by threaded fastener, described in two adjacent sections
The junction of tube coupling is provided with elastic seal ring.
9. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as claimed in claim 8, which is characterized in that institute
State threaded fastener and to be provided with elastomeric pad between connecting portion；
Preferably, the elastomeric pad is disk spring.
10. simulating the indoor model conduit jacking of earth pressure balanced jacking construction as described in claim 1, which is characterized in that
The outer diameter of the handpiece case is greater than or equal to the outer diameter of the tube coupling shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910792396.0A CN110424979A (en) | 2019-08-26 | 2019-08-26 | Simulate the indoor model conduit jacking of earth pressure balanced jacking construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910792396.0A CN110424979A (en) | 2019-08-26 | 2019-08-26 | Simulate the indoor model conduit jacking of earth pressure balanced jacking construction |
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| CN110424979A true CN110424979A (en) | 2019-11-08 |
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