CN208518677U - A kind of supporting mold of Tunnel - Google Patents
A kind of supporting mold of Tunnel Download PDFInfo
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- CN208518677U CN208518677U CN201820543616.7U CN201820543616U CN208518677U CN 208518677 U CN208518677 U CN 208518677U CN 201820543616 U CN201820543616 U CN 201820543616U CN 208518677 U CN208518677 U CN 208518677U
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Abstract
The utility model provides a kind of supporting mold of Tunnel, moveable supporting mold is used in the construction of Tunnel, the supporting mold and tunnel excavation face form die cavity, the supporting mold includes template, the template is mobile by motion profile of tunnel excavation facial contour, the die cavity for forming Tunnel concrete layer is cooperatively formed jointly by mobile supporting mold and tunnel excavation face, the utility model has the beneficial effects that: the activity duration is short high-efficient, accelerator dosage is low, without rebound, the smooth no concave-convex of flatness, it is beautiful and be not necessarily to post-processing.
Description
Technical field
The utility model relates to constructing tunnel preliminary bracing technical fields, more particularly, to a kind of branch of Tunnel
Protect mold.
Background technique
When carrying out boring construction using Mining Method, surrounding rock supporting is generally divided into preliminary bracing and secondary lining, secondary lining
Usually concrete or reinforced concrete structure.Before secondary lining applies, the support form carried out immediately later is just excavated
Referred to as preliminary bracing.Preliminary bracing is the primary load bearing structure of tunnel stabilization, it is closely connected flexible structure and control in country rock
The main supporting means of surrouding rock deformation relaxation processed, and secondary lining is in the case where country rock and basicly stable preliminary bracing deformation
It builds, preliminary bracing is the basis of secondary lining.
Current tunnel preliminary bracing generally uses anchor and spray net structure type, on the tunnel initial-stage surface for having excavated completion,
Manually or automatically successively injection is mixed with the concrete of a large amount of accelerators, forms it on the surface of tunnel initial-stage centainly
The preliminary bracing of thickness, as shown in Figure 4.But due in order to guarantee concrete rapidly inner surface of tunnel formed initial stage branch
Sheath often joined a large amount of accelerator in concrete, and accelerator not only causes health hazard to construction personnel, be easy to lead
It causes worker to suffer from the diseases such as silicosis, but also will cause environmental pollution.Meanwhile the gunite concrete directly on tunnel and anchor and spray net,
It is poor to will also result in preliminary bracing rigidity, or even the case where preliminary bracing strain cracking occurs, especially breaking surrounding rock location, name
Referred to as " reinforcement means of Tunnel ", application No. is in 201610225659.6 application for a patent for invention file also
It records.
In Tunnel layer concrete course of injection, the rebound phenomenon of concrete is particularly acute, and rebound degree is about
10%-50% causes the significant wastage of material, and sprays rear surface and concrete accumulation easily occur, protrusion and pit occurs.Cause
Process need to handle surface and accumulate excessive boss below, cause human cost waste, a kind of entitled " tunnel initial-stage branch
Protection structure ", application No. is also have related record and explanation in 201721035530.5 utility model patent application.
Utility model content
Technical problem to be solved by the utility model is: in view of the problems of the existing technology, providing a kind of tunnel initial-stage
The supporting mold of supporting, accelerator dosage is low, is not necessarily to post-processing without rebound, the smooth no concave-convex of flatness, is easy to implement automatic
Change construction.
The technical problems to be solved in the utility model is realized using following technical scheme: a kind of branch of Tunnel
Mold, including template are protected, the template is mobile by motion profile of tunnel excavation facial contour, passes through mobile supporting mold and tunnel
Road excavation face cooperatively forms the die cavity for forming Tunnel concrete layer jointly.
Preferably, the side of the supporting mold is equipped with baffle, the baffle, molded branch sheath, supporting mold and tunnel
Road excavation face surrounds die cavity jointly.
Preferably, the outer surface of the template is globoidal structure.
Preferably, reinforced mesh and steel arch-shelf are additionally provided between the supporting mold and tunnel excavation face.
Preferably, the supporting mold is equipped with buffer unit, and the buffer unit can guarantee supporting mold and steel arch
Frame fits closely.
Compared with prior art, the utility model has the beneficial effects that using movement in the construction of Tunnel
Supporting mold, which persistently forms die cavity with tunnel excavation face in moving process, constantly sprays into the die cavity
The concrete for being added with accelerator is penetrated, not only has and quick closure is carried out to new excavation rock stratum, prevents stone and layer deformation etc. excellent
Point, moreover it is possible to make first branch jetted layers reach intensity requirement in a short time, shorten construction period, save the dosage of accelerator, simultaneously
For concrete without rebound, the flat and smooth no concave-convex of first branch concrete layer is not necessarily to post-processing, high reliablity.
Detailed description of the invention
Fig. 1 is the working state figure of the initial position concrete ejection of first embodiment of the invention.
Fig. 2 is the tunnel-side concrete ejection working state figure of first embodiment of the invention.
Fig. 3 is the tunnel vault concrete ejection working state figure of first embodiment of the invention.
Fig. 4 is the working state figure of the Tunnel of the prior art.
Fig. 5 is the structural schematic diagram of the supporting mold of second embodiment of the invention.
Fig. 6 is the portion the I partial enlarged view of second embodiment of the invention.
Marked in the figure: 1- tunnel excavation face, 2- reinforced mesh, 3- steel arch-shelf, 4- supporting mold, 5- concrete spray head, 6-
Angle adjusting mechanism, 401- template, 402- wearing plate, 403- rubber block, 404- spring, 405- dormant bolt, 601- support,
602- adjusts oil cylinder.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is described in detail in embodiment.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
As shown in Figure 1, a kind of supporting mold of Tunnel, using removable in the construction of Tunnel
Supporting mold 4, the supporting mold 4 forms die cavity with tunnel excavation face 1, and into die cavity, filling is added with the coagulation of accelerator
Soil, after mold cavity point (bottom) concrete initial set, the supporting mold 4 is gradually mobile to next station, at this time supporting mould
Tool, molded branch sheath and tunnel excavation face surround new die cavity jointly, when the supporting mold 4 is mobile, continue to supporting mould
Have the concrete that filling in the die cavity newly formed in 4 moving process with tunnel excavation face 1 is added with accelerator, ultimately forms entire
The first branch concrete layer in tunnel.The original operating state of the supporting mold 4, which contacts for the bottom of supporting mold 4 with tunnel bottom, matches
It closes, the side wall end face of side and tunnel excavation face 1 is in the same plane, and side is close to steel arch-shelf, on supporting mold
Equipped with buffer unit, the buffer unit can guarantee that supporting mold is fitted closely with steel arch-shelf, the gunite concrete into die cavity
Reach the thickness of Design of Tunnel requirement.When work, supporting mold 4 is moved along the profile in tunnel excavation face 1, described
Supporting mold 4 is mountable on jet mould trolley, and as the telescopic arm of jet mould trolley is mobile, tunnel or so two halves not only can be used
The form of construction work of width successively from lower to upper, can also be using the form of construction work of tunnel or so two halves width simultaneously from lower to upper, to mention
The working efficiency of preliminary bracing layer is risen, described tunnel or so two halves width constructs the first branch concrete layer in the tunnel to be formed in tunnel top
Position is overlapped, after lap-joint tamps with template support, strike off, complete the supporting of entire tunnel contour.
As shown in Figure 5 and Figure 6, the supporting mold 4 of second embodiment of the invention includes template 401, wearing plate 402, rubber
Block 403, spring 404 and dormant bolt 405, the outside (side of nearly tunnel excavation contoured surface) of the template 401 are equipped with wear-resisting
Plate 402 is equipped with rubber block 403 between the wearing plate 402 and template 401, the inside of the rubber block 403 is hollow structure,
Spring 404 is equipped between the hollow cavity, dormant bolt 405 sequentially passes through in wearing plate 402, rubber block 403 and rubber block
Spring 404 and template 401 wearing plate 402 and rubber block 403 are locked in template 401.The wearing plate 402 is in strip,
And the both ends of template 401 are set, the die cavity that pours of arch bridge shape is formed, the size of the rubber block 403 is less than wearing plate 402
Size, rubber block 403 is completely covered wearing plate 402.When supporting mold 4 works, wearing plate 402 and tunnel excavation face
1 contact, injects concrete into the cavity between wearing plate 402, rubber block 403 and template 401 and tunnel excavation face 1, due to
The spring 404 that there is the rubber block 403 inside of elastic reaction while rubber block 403 to be also equipped with tension, therefore
When 1 flatness of tunnel excavation face is poor, wearing plate 402 also can be again under the action of rubber block 403 and spring 404, as wide as possible
It keeps wearing plate 402 to contact with tunnel excavation face 1, reduces the leakage of die cavity inner concrete.
As shown in fig. 6, supporting mold 4 further includes angle adjusting mechanism 6, (opened far from tunnel on the inside of the template of supporting mold 4
Dig contoured surface side) both ends be installed with hinged block respectively, hinge angle regulating mechanism 6 on the hinged block, the angle
Regulating mechanism 6 can guarantee supporting mold 4 in the process of walking, and the radian with tunnel excavation contoured surface 1 agrees in real time.Angle tune
Mechanism 6 is saved including support 601 and adjusts oil cylinder 602, one end of the support 601 and the hinged block for being installed in 401 one end of template
Hingedly, the other end of support 601 and adjust oil cylinder 602 one end it is hinged, it is described adjust oil cylinder 602 the other end and be installed in mould
The hinged block of 401 other end of plate is hinged, and the support 601, adjusting oil cylinder 602 and template 401 surround the hinged of triangle jointly
Link mechanism.Support 601 can be connect with the mechanical arm of shotcreting jumbo, realize the fixation of supporting mold 4, then by adjusting oil cylinder
602 Telescopic realizes that supporting mold 4 is rotated by the center of circle of the hinge joint of template 401 and support 601, to guarantee supporting
Mold 4 is able to maintain the radian contract with tunnel excavation contoured surface in any operating position of tunnel excavation contoured surface supporting construction
It closes.
Reinforced mesh 2 and steel arch-shelf 3 are additionally provided between supporting mold 4 and tunnel excavation face 1, to the die cavity of supporting mold
Before interior filling concrete, first complete the installment work of this section of steel mesh, steel arch-shelf, then into die cavity gunite concrete to tunnel
The thickness that preliminary bracing requires.The outer surface of supporting mold 4 is arc structure, the radian and Tunnel Second Lining of the arc structure
Inner surface radian it is identical, due to the smooth no concave-convex of flatness, beautiful be not necessarily to post-processing, the concrete ejection mistake of secondary lining
Cheng Zhongke reduces cost of labor directly based on first branch concrete layer.
As shown in Figures 2 and 3, supporting mold 4 leaves that initial position moves to tunnel-side and the work of keystone is shown
It is intended to, includes reinforced mesh 2 and steel arch with structure in tunnel in conjunction with working condition (Fig. 1) of the supporting mold in initial position
For frame 3, the process of the work of the initial supporting in tunnel are as follows: S1. installs steel mesh and steel arch in tunnel initial-stage outline excavation face
Frame；S2. the height of supporting mold is calculated and determined, when guaranteeing that gunite concrete reaches 80% in the die cavity of supporting mold, is in bottom
Portion's concrete is pre-hardening；S3. supporting mold is moved to initial position, i.e. the bottom of supporting mold is contacted with tunnel bottom matches
It closes, forms initial die cavity；S4. it is mixed with the concrete of accelerator to the intracavitary injection of introductory die, guarantees that concrete has certain time
Mobility；S5. after the intracavitary concrete parts initial set of introductory die, supporting mold is moved along the profile in tunnel excavation face,
So that the supporting mold gradually moved and tunnel excavation contoured surface consistently form die cavity, while continuing to spray into die cavity to be added to
The concrete of appropriate accelerator；S6. it is repeated in step S5, until the injection of tunnel vault concrete is completed, to the mixed of vault
Supporting mold is unloaded after solidifying soil initial set；S7. by raised or sunken the striking off of pre-hardening concrete lap-joint in tunnel, entire tunnel is completed
The preliminary bracing of road profile.
It can guarantee that concrete without rebound, is greatly reduced and is produced into using supporting mold 4 in Tunnel construction
This, i.e., compared with existing wet shot: 1, about 30 side of concrete amount per tour, rebound average 20%, per tour can save 500 yuan of 6 side */side=
3000 yuan；2, existing about 600 kilograms of 30 side's dosage of wet shot accelerator, using about 300 kilograms of accelerator dosage after supporting mold, often
Class saves 300 kilograms * 3 yuan/kilograms=900 yuan；Therefore construction is once being only escapable cost on material: (3000+900) member/day *
2*330 days=257.4 ten thousand yuan.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Out, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
Claims (4)
1. a kind of supporting mold of Tunnel, including template, it is characterised in that: the template is with tunnel excavation facial contour
It is mobile for motion profile, it is cooperatively formed jointly by mobile supporting mold and tunnel excavation face for forming Tunnel
The die cavity of concrete layer；The supporting mold is equipped with buffer unit, and the buffer unit can guarantee supporting mold and steel arch
Frame fits closely.
2. a kind of supporting mold of Tunnel according to claim 1, it is characterised in that: the supporting mold
Side is equipped with baffle, and the baffle, molded branch sheath, supporting mold and tunnel excavation face surround die cavity jointly.
3. a kind of supporting mold of Tunnel according to claim 1 or 2, it is characterised in that: the template
Outer surface is globoidal structure.
4. a kind of supporting mold of Tunnel according to claim 3, it is characterised in that: the supporting mold with
Tunnel excavation is additionally provided with reinforced mesh and steel arch-shelf between face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820543616.7U CN208518677U (en) | 2018-04-17 | 2018-04-17 | A kind of supporting mold of Tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820543616.7U CN208518677U (en) | 2018-04-17 | 2018-04-17 | A kind of supporting mold of Tunnel |
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| Publication Number | Publication Date |
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| CN208518677U true CN208518677U (en) | 2019-02-19 |
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| CN201820543616.7U Active CN208518677U (en) | 2018-04-17 | 2018-04-17 | A kind of supporting mold of Tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506024A (en) * | 2018-04-17 | 2018-09-07 | 蓝传雯 | A kind of construction method and supporting mold of Tunnel |
| CN110486052A (en) * | 2019-09-04 | 2019-11-22 | 中交天和机械设备制造有限公司 | A kind of press injecting type concrete support method and the supporting mechanism for implementing it |
| CN111520165A (en) * | 2020-05-09 | 2020-08-11 | 广东水电二局股份有限公司 | Tunnel construction is with spraying concrete device with reduce rebound rate |
-
2018
- 2018-04-17 CN CN201820543616.7U patent/CN208518677U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506024A (en) * | 2018-04-17 | 2018-09-07 | 蓝传雯 | A kind of construction method and supporting mold of Tunnel |
| CN110486052A (en) * | 2019-09-04 | 2019-11-22 | 中交天和机械设备制造有限公司 | A kind of press injecting type concrete support method and the supporting mechanism for implementing it |
| CN111520165A (en) * | 2020-05-09 | 2020-08-11 | 广东水电二局股份有限公司 | Tunnel construction is with spraying concrete device with reduce rebound rate |
| CN111520165B (en) * | 2020-05-09 | 2020-12-01 | 广东水电二局股份有限公司 | Tunnel construction is with spraying concrete device with reduce rebound rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220105 Address after: No. 669, south section of Rongtai Avenue, Chengdu cross strait science and Technology Industrial Development Park, Wenjiang District, Chengdu, Sichuan 610030 Patentee after: SICHUAN BLUE OCEAN INTELLIGENT EQUIPMENT MANUFACTURING CO.,LTD. Address before: 643100 No. 2, floor 7, No. 92-3, North Street, Xuyang Town, Rong County, Zigong City, Sichuan Province Patentee before: Lan Chuanwen |
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| TR01 | Transfer of patent right |