CN105781587A - Tunnel excavation vault emergency support equipment and method - Google Patents
Tunnel excavation vault emergency support equipment and method Download PDFInfo
- Publication number
- CN105781587A CN105781587A CN201610277988.5A CN201610277988A CN105781587A CN 105781587 A CN105781587 A CN 105781587A CN 201610277988 A CN201610277988 A CN 201610277988A CN 105781587 A CN105781587 A CN 105781587A
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- Prior art keywords
- concrete
- arc
- arc arch
- arch bar
- vault
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Abstract
The invention discloses tunnel excavation vault emergency support equipment and a method. The tunnel excavation vault emergency support equipment comprises a carrying vehicle and an arc-shaped arch slab, wherein a concrete grout containing box and a controller are arranged on the carrying vehicle, the arc-shaped arch slab is connected with the upper part of the carrying vehicle through a support frame, and a grout injection pump is arranged on the concrete grout containing box; the whole arc-shaped arch slab is in an arc surface shape, an arc-shaped scraping plate is arranged at the upper surface of the top part of the arc-shaped arch slab, the grout injection pump is communicated with a grout injection pipe, and a grout outlet pipe opening of the grout injection pipe penetrates through the arc-shaped arch slab and is positioned at the top part of the arc-shaped arch slab. The tunnel excavation vault emergency support equipment has the advantages that fast-setting concrete dry material in the grout containing box and the water are conveyed to the upper side of the arc-shaped arch slab by the grout injection pipe; when the concrete is set, the primarily set surface is flattened by the scraping plate; the loose particles are cleaned by a brush at the front end of the arc-shaped arch slab, and the protecting strength and engineering quality are improved; the tunnel vault support is more effectively and timely completed, the tunnel construction speed is accelerated, and the construction safety is guaranteed.
Description
Technical field
The present invention relates to field, highway engineering tunnel, particularly relate to a kind of urgent support apparatus of tunnel excavation vault and method.
Background technology
Along with China's expanding economy, Transportation Infrastructure Construction develops rapidly, and deeply, vcehicular tunnel quantity grows with each passing day in highway construction complicated to geographical position gradually region, the mountain ridge, and highway phenomenon of crossing over mountain after mountain is extremely universal.In constructing tunnel process, vault construction is had different selections by the impact of geological conditions, and especially in soft stratum location, vault falls broken now fairly obvious.At present, solving the vault broken common method that falls is tentatively protect with gunite concrete after excavation, it is ensured that construction quality and practitioner's safety.The construction of gunite concrete is usually present problems with: (1) resilience problem, there is the concrete ejection of certain speed after the vault excavated, part can owing to momentum is too big or tack time kicks down not, adopting what measure to reduce rebound degree or a complex technical problem, existing construction team is all difficult to hold；(2) can adhesion problem, ensure that the closely knit of concrete itself and concrete and country rock bond closely knit problem, and can this is related to concrete play predictive role.Concrete ejection is after vault, due to soft, the resilience in local so that concrete is difficult to closely knit in position greatly, does not reach the purpose of vault supporting.Meanwhile, construction of shotcrete on-the-spot due to being scattered of slurry, ventilate, cause that construction environment is very poor, the health of human body of practitioner had bad impact.
For solving the problems referred to above, some units in charge of construction propose, the method manually plastered.Its advantage is in that: may determine that the practical situation of different keystone, it is ensured that concrete degree of compaction, improves the adhesion strength of concrete and vault.But, its shortcoming becomes apparent from: speed of application is slow, it is necessary to a large amount of long-time work high above the ground of practitioner, bigger for construction speed and personnel attrition.Numerous line practitioners propose the requirement of mechanical execution, but existing construction machinery does not possess the function can protected within the tunnel excavation short time, if a kind of construction equipment that constructing tunnel is protected in time can be driven, all have great importance for improving speed of application, construction quality and saving human resources.
Summary of the invention
For the weak point that prior art exists, it is an object of the invention to provide a kind of urgent support apparatus of tunnel excavation vault and method, combine the feature of existing tunnel vault preliminary bracing, from the technique that mechanical feed, machinery are smeared, exploitation is for the equipment of the urgent supporting of tunnel excavation vault, more efficient, complete tunnel vault supporting timely, to reach to improve constructing tunnel speed, it is ensured that the purpose of construction safety.
The purpose of the present invention is achieved through the following technical solutions:
A kind of urgent support apparatus of tunnel excavation vault, including carrying vehicle and arc arch bar, described carrying vehicle loads and is provided with concrete Sheng slurry case and controller, described arc arch bar is connected to above carrying vehicle by bracing frame, described concrete is contained slurry case and is provided with the grouting pump being connected with concrete Sheng slurry box cavity, having grouting pump switch module inside controller, grouting pump electrically connects with the grouting pump switch module of controller；Described arc arch bar entirety is arc shape, and the upper surface at arc arch bar top is provided with the scraper plate of arcuate shape, and described grouting pump is connected with Grouting Pipe, and the pulp mouth of pipe of Grouting Pipe is through arc arch bar and is positioned at arc arch bar top.
In order to realize the present invention better, the upper surface at described arc arch bar top is additionally provided with the hairbrush of arcuate shape, described hairbrush is arranged at the front end of arc arch bar, and described scraper plate is arranged at the rear end of arc arch bar, and hairbrush is parallel with scraper plate to be arranged side by side in the upper surface at arc arch bar top.
Dust for the ease of tunnel vault is fallen adsorbs, and is provided with dedusting yarn in the space between described carrying vehicle and arc arch bar, and described dedusting yarn is mounted on bracing frame.
Currently preferred hair brush structure technical scheme is: described hairbrush is Electric brush of bristles, has hairbrush switch module inside controller, and hairbrush electrically connects with the hairbrush switch module of controller.
Currently preferred support frame structure technical scheme is: support frame as described above is made up of several support bars, described support bar is expansion link, described carrying vehicle is provided with the hydraulic cylinder corresponding with support bar, and hydraulic cylinder carries out elevating movement for driving the support bar of correspondence.
As preferably, support frame as described above is made up of eight support bars, and the diameter of support bar is more than 8cm；Described arc arch bar is made up of curved plate, and its thickness is 4～8mm.
As preferably, described scraper plate is made up of banded arc-shaped steel bar, and the width of scraper plate is more than 0.5cm.
As preferably, slurry case contained by described concrete is rectangular shape, and concrete is contained the top starching case and had the injection mouth of fast hardening concrete siccative, and the top of concrete Sheng slurry case also has the injection mouth of water.
A kind of urgent method for protecting support of tunnel excavation vault, its method step is as follows:
A, in the arcuate walls of tunnel rock, construct dome plate, start carrying vehicle and enter in tunnel, the height of all support bars of adjusted in concert, making the arc arch bar of all support bar common support and the dome plate in tunnel at a distance of 2～5cm, there is support bar in then fixing or residence, location to keep the arc arch bar operating distance with dome plate for 2～5cm；
Hairbrush opened by hairbrush switch module and started by B, controller, and irregular to dome plate in tunnel or vault local and loosening position are cleaned by hairbrush；
C, to concrete contain slurry case in be injected separately into fast hardening concrete siccative and water, grouting pump opened by grouting pump switch module and started by controller, and the fast hardening concrete siccative in slurry case contained by concrete by grouting pump and water is transported in the dome plate on arc arch bar top by Grouting Pipe；
D, start carrying vehicle and move forward with the speed of 0.5～2m/min, the scraper plate at arc arch bar top strike off process by the concrete of dome plate or vault initial set is carried out surface.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention contains in slurry case at concrete and holds fast hardening concrete siccative and water, by grouting pump, the fast hardening concrete siccative contained in slurry case and water are transported on the upside of arc arch bar through Grouting Pipe, then solidifying on the upside of arc arch bar, while solidification, the surface after initial set will be carried out smooth process to improve protection quality by scraper plate；Arc front edge of board is provided with hairbrush, arc arch bar rear end is provided with scraper plate, loosening granule is cleared up by hairbrush, the contact that ground to ensure fast hardening concrete and excavation is more closely knit, ensure that the scraper plate of arc arch bar rear end can carry out the smooth process of concrete surface quickly and smoothly simultaneously, increase protection intensity and construction quality；Present invention incorporates the feature of existing tunnel vault preliminary bracing, from the technique that mechanical feed, machinery are smeared, more efficient, complete tunnel vault supporting timely, reach to improve constructing tunnel speed, ensure the purpose of construction safety.
(2) present invention adopts the lorry carrying vehicle as equipment of routine, it is possible to move at random in the tunnel in not synteny, the advantage with conveniently moving；The present invention adopts and both increases dedusting yarn between any two support bar, has effectively adsorbed the dust in constructing tunnel process, only need to be periodically subject to clear up to dedusting yarn, the advantage with clean environment firendly；Present invention arc arch bar in protection process provides below a relatively large safe space, it is ensured that construction practitioner's personal safety, the advantage with construction safety.
Accompanying drawing explanation
Fig. 1 is the side block diagram of the urgent support apparatus of tunnel excavation vault；
Fig. 2 is the backsight structure chart of the urgent support apparatus of tunnel excavation vault.
Wherein, the name corresponding to accompanying drawing labelling in accompanying drawing is called:
1-carrying vehicle, 2-support bar, 3-arc arch bar, 4-concrete contains slurry case, 5-controller, 6-grouting pump, 7-scraper plate, 8-Grouting Pipe, 9-hairbrush, 10-dedusting yarn, 11-dome plate, 12-tunnel rock.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment
As shown in Fig. 1～Fig. 2, a kind of urgent support apparatus of tunnel excavation vault, including carrying vehicle 1 and arc arch bar 3, the carrying vehicle 1 of the present invention selects two-axle truck, power is more than 100 horsepowers, carrying vehicle 1 loads and is provided with concrete Sheng slurry case 4 and controller 5, arc arch bar 3 is connected to above carrying vehicle 1 by bracing frame, concrete is contained slurry case 4 and is provided with and the grouting pump 6 of concrete Sheng slurry case 4 intracavity inter-connection, controller 5 is internal has grouting pump switch module, and grouting pump 6 electrically connects with the grouting pump switch module of controller 5；Fast hardening concrete siccative and water are transported to arc arch bar 3 top by grouting pump 6 by Grouting Pipe 8, and controller 5 manipulates the opening and closing of grouting pump 6.Arc arch bar 3 is overall in arc shape, the upper surface at arc arch bar 3 top is provided with the scraper plate 7 of arcuate shape, the scraper plate 7 of the present embodiment is made up of banded arc-shaped steel bar, and the width of scraper plate 7 is more than 0.5cm, and scraper plate 7 is arranged in the rear part edge position on the upside of arc arch bar 3.Grouting pump 6 is connected with Grouting Pipe 8, and the pulp mouth of pipe of Grouting Pipe 8 is through arc arch bar 3 and is positioned at arc arch bar 3 top.
As it is shown in figure 1, the upper surface at arc arch bar 3 top is additionally provided with the hairbrush 9 of arcuate shape, hairbrush 9 is arranged at the front end of arc arch bar 3, and scraper plate 7 is arranged at the rear end of arc arch bar 3, and hairbrush 9 is parallel with scraper plate 7 to be arranged side by side in the upper surface at arc arch bar 3 top.The hairbrush 9 of the present invention is Electric brush of bristles, and controller 5 is internal has hairbrush switch module, and hairbrush 9 electrically connects with the hairbrush switch module of controller 5.The hairbrush 9 of the present embodiment adopts metal wheel brush, and the burr length of hairbrush 9 is chosen according to smearing slurry thickness, and hairbrush 9 is placed in the forward edge position on the upside of arc arch bar 3.The width of scraper plate 7 is more than 0.5cm, and the peak height value of scraper plate 7 is lower than the peak height value 2～5cm of hairbrush.
As in figure 2 it is shown, be provided with dedusting yarn 10 in space between carrying vehicle 1 and arc arch bar 3, dedusting yarn 10 is mounted on bracing frame, and the dedusting yarn 10 of the present embodiment is arranged between each two support bar 2.The dedusting yarn 10 of the present invention adopts existing patented technology, and its patent name is Dust-proof screen window, and its number of patent application is 201520004129.X.
As shown in Figure 1, bracing frame is made up of several support bars 2, and support bar 2 is expansion link, and support bar 2 has preferably telescopic hollow stem, carrying vehicle 1 is provided with the hydraulic cylinder corresponding with support bar 2, and hydraulic cylinder carries out elevating movement for driving the support bar 2 of correspondence.Currently preferred bracing frame is made up of eight support bars 2, and the diameter of support bar 2 is more than 8cm, and the arc arch bar 3 of the present embodiment is supported by eight support bars 2, point front two rows, often four support bars 2 of row；Arc arch bar 3 is made up of curved plate, and its thickness is 4～8mm, and the radian of arc arch bar 3 is adjusted according to tunnel appearance design diagram shape.
Slurry case 4 contained by the concrete of the present invention is rectangular shape, and concrete is contained the top starching case 4 and had the injection mouth of fast hardening concrete siccative, and the top of concrete Sheng slurry case 4 also has the injection mouth of water.Slurry case 4 contained by the concrete of the present embodiment can also adopt the following technical scheme that concrete contains slurry case 4 for rectangular shape, and the injection mouth of the reserved concrete material (concrete material includes fast hardening concrete siccative and water) in top of slurry case 4 contained by concrete；Injection mouth is divided into left and right two parts, and the injection mouth of left half holds fast hardening concrete siccative, and the injection mouth of right half holds water.
The know-why of the present invention is as follows: when the initial stage in tunnel excavation process, and tunnel vault has local and loosens or locally concavo-convex, is cleaned by metal wheel brush, increases the adhesion strength of concrete and vault.For preventing in the cleaning process broken phenomenon of decline, expand concrete and smear work surface, fast hardening concrete siccative and water are directly pumped in the dome plate 11 of arc arch bar, make fast hardening concrete siccative and water be sufficiently mixed in Grouting Pipe 8 course of conveying, and enter solidification zone.In the process that carrying vehicle 1 moves, the surface after initial set will be carried out smooth process by scraper plate 7.Meanwhile, the dust in tunnel excavation face is adsorbed by dust-proof yarn 10 so that the dust in tunnel reduces in a large number, and other operations after whole preventer have a good working environment in the process of carrying out.
A kind of urgent method for protecting support of tunnel excavation vault, its method step is as follows:
A, in the arcuate walls of tunnel rock 12, construct dome plate 11, start carrying vehicle 1 and enter in tunnel, the height of all support bars 2 of adjusted in concert, making the arc arch bar 3 of all support bar 2 common support and the dome plate 11 in tunnel at a distance of 2～5cm, there is support bar 2 in then fixing or residence, location to keep the arc arch bar 3 operating distance with dome plate 11 for 2～5cm；
Hairbrush 9 is opened and started to B, controller 5 by hairbrush switch module, and irregular to dome plate in tunnel 11 or vault local and loosening position are cleaned by hairbrush 9；
C, to concrete contain slurry case 4 in be injected separately into fast hardening concrete siccative and water, grouting pump 6 is opened and started to controller 5 by grouting pump switch module, and the fast hardening concrete siccative in slurry case 4 contained by concrete by grouting pump 6 and water is transported in the dome plate 11 on arc arch bar 3 top by Grouting Pipe 8；
D, start carrying vehicle 1 and move forward with the speed of 0.5～2m/min, the scraper plate 7 at arc arch bar 3 top strike off process by the concrete of dome plate 11 or vault initial set is carried out surface.
Above-mentioned embodiment is a preferred embodiment of the present invention; it is not for limiting the enforcement of the present invention and interest field; all equivalences made according to the content described in the present patent application scope of patent protection change and approximate replacement, all should be within the scope of the present invention.
Claims (9)
1. the urgent support apparatus of tunnel excavation vault, it is characterized in that: include carrying vehicle (1) and arc arch bar (3), the upper loading of described carrying vehicle (1) is provided with concrete and contains slurry case (4) and controller (5), described arc arch bar (3) is connected to carrying vehicle (1) top by bracing frame, described concrete is contained slurry case (4) and is provided with and the grouting pump (6) of concrete Sheng slurry case (4) intracavity inter-connection, controller (5) is internal has grouting pump switch module, and grouting pump (6) electrically connects with the grouting pump switch module of controller (5)；Described arc arch bar (3) is overall in arc shape, the upper surface at arc arch bar (3) top is provided with the scraper plate (7) of arcuate shape, described grouting pump (6) is connected with Grouting Pipe (8), and the pulp mouth of pipe of Grouting Pipe (8) is through arc arch bar (3) and is positioned at arc arch bar (3) top.
2. a kind of urgent support apparatus of tunnel excavation vault described in claim 1, it is characterized in that: the upper surface at described arc arch bar (3) top is additionally provided with the hairbrush (9) of arcuate shape, described hairbrush (9) is arranged at the front end of arc arch bar (3), described scraper plate (7) is arranged at the rear end of arc arch bar (3), and hairbrush (9) is parallel with scraper plate (7) to be arranged side by side in the upper surface at arc arch bar (3) top.
3. a kind of urgent support apparatus of tunnel excavation vault described in claim 1 or 2, it is characterised in that: being provided with dedusting yarn (10) in the space between described carrying vehicle (1) and arc arch bar (3), described dedusting yarn (10) is mounted on bracing frame.
4. a kind of urgent support apparatus of tunnel excavation vault described in claim 2, it is characterized in that: described hairbrush (9) is Electric brush of bristles, controller (5) is internal has hairbrush switch module, and hairbrush (9) electrically connects with the hairbrush switch module of controller (5).
5. a kind of urgent support apparatus of tunnel excavation vault described in claim 1 or 2, it is characterized in that: support frame as described above is made up of several support bars (2), described support bar (2) is expansion link, described carrying vehicle (1) is provided with the hydraulic cylinder corresponding with support bar (2), and hydraulic cylinder carries out elevating movement for driving the support bar (2) of correspondence.
6. a kind of urgent support apparatus of tunnel excavation vault described in claim 5, it is characterised in that: support frame as described above is made up of eight support bars (2), and the diameter of support bar (2) is more than 8cm；Described arc arch bar (3) is made up of curved plate, and its thickness is 4～8mm.
7. a kind of urgent support apparatus of tunnel excavation vault described in claim 1, it is characterised in that: described scraper plate (7) is made up of banded arc-shaped steel bar, and the width of scraper plate (7) is more than 0.5cm.
8. a kind of urgent support apparatus of tunnel excavation vault described in claim 1, it is characterized in that: slurry case (4) contained by described concrete is rectangular shape, concrete is contained the top starching case (4) and is had the injection mouth of fast hardening concrete siccative, and concrete is contained the top starching case (4) and also had the injection mouth of water.
9. the urgent method for protecting support of tunnel excavation vault, it is characterised in that: its method step is as follows:
A, in the arcuate walls of tunnel rock (12), construct dome plate (11), start carrying vehicle (1) and enter in tunnel, the height of all support bars of adjusted in concert (2), making the arc arch bar (3) of all support bars (2) common support and the dome plate (11) in tunnel at a distance of 2～5cm, there is support bar (2) in then fixing or residence, location；
Hairbrush (9) is opened and started to B, controller (5) by hairbrush switch module, and dome plate in tunnel (11) or the irregular local of vault and loosening position are cleaned by hairbrush (9)；
C, contain in slurry case (4) to concrete and be injected separately into fast hardening concrete siccative and water, grouting pump (6) is opened and started to controller (5) by grouting pump switch module, and concrete is contained the fast hardening concrete siccative in slurry case (4) and water and is transported in the dome plate (11) on arc arch bar (3) top by Grouting Pipe (8) by grouting pump (6)；
D, start carrying vehicle (1) and move forward with the speed of 0.5～2m/min, the scraper plate (7) at arc arch bar (3) top strike off process by the concrete of dome plate (11) or vault initial set is carried out surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610277988.5A CN105781587B (en) | 2016-04-30 | 2016-04-30 | A kind of urgent support apparatus of tunnel excavation vault and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610277988.5A CN105781587B (en) | 2016-04-30 | 2016-04-30 | A kind of urgent support apparatus of tunnel excavation vault and method |
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| CN105781587B CN105781587B (en) | 2017-07-21 |
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Cited By (3)
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| CN108301869A (en) * | 2018-05-07 | 2018-07-20 | 洛阳理工学院 | A kind of tunnel vault danger stone remover |
| CN110318797A (en) * | 2019-07-12 | 2019-10-11 | 湖南三五二环保科技有限公司 | A kind of coal working face withdraws device and its application method |
| CN113914901A (en) * | 2021-11-11 | 2022-01-11 | 中国铁建大桥工程局集团有限公司 | Tunnel supporting structure |
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| CN110318797A (en) * | 2019-07-12 | 2019-10-11 | 湖南三五二环保科技有限公司 | A kind of coal working face withdraws device and its application method |
| CN113914901A (en) * | 2021-11-11 | 2022-01-11 | 中国铁建大桥工程局集团有限公司 | Tunnel supporting structure |
| CN113914901B (en) * | 2021-11-11 | 2024-04-09 | 中国铁建大桥工程局集团有限公司 | Tunnel supporting structure |
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| Publication number | Publication date |
|---|---|
| CN105781587B (en) | 2017-07-21 |
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