CN109595012A - Pulsed concrete-pressure-air combined jet device and concrete injection method - Google Patents
Pulsed concrete-pressure-air combined jet device and concrete injection method Download PDFInfo
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- CN109595012A CN109595012A CN201910058258.XA CN201910058258A CN109595012A CN 109595012 A CN109595012 A CN 109595012A CN 201910058258 A CN201910058258 A CN 201910058258A CN 109595012 A CN109595012 A CN 109595012A
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- 239000004567 concrete Substances 0.000 title claims abstract description 155
- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims abstract description 14
- 230000037431 insertion Effects 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 10
- 239000011378 shotcrete Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000011381 foam concrete Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nozzles (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to a kind of pulsed concrete-pressure-air combined jet device and concrete injection methods, it is characterised in that: including pulse-control system, concrete gun, pressure-air spraying system and pressure-air spray head；Pressure-air spray head includes the horn mouth and end plate being welded to connect, and end plate central is equipped with concrete gun and is inserted into hole, and concrete gun, which is inserted into around hole, is equipped with air inlet；Concrete gun is connected to concrete gun insertion hole, equipped with the concrete pump and concrete valve communicated to connect with pulse-control system；Pressure-air spraying system is connected to air inlet, equipped with the air pressure pump and pressure-air valve communicated to connect with pulse-control system.This structure can stop concrete springback, avoid waste of material, and also can smooth, squeeze and vibrate the concrete being already attached on country rock, and cavity and gap will not be generated by so that concrete is contacted stronger, inside concrete with country rock.
Description
Technical field
The present invention relates to the first lining construction field of tunnel surrounding gunite concrete more particularly to a kind of pulsed coagulations
Soil-pressure-air combined jet device and concrete injection method.
Background technique
During lining construction, high pressure pump truck is generallyd use at present and makees concrete ejection to tunnel surrounding surface
For first lining cutting, such as application No. is the pulsed concrete sprayers of CN201710467538.7 comprising pedestal, universal wheel,
Concrete storehouse, injection pipe and nozzle；It is fixedly connected with steering motor in the middle part of pedestal lower surface, is fixedly connected with and turns at the top of shaft
Disk, the upper surface of turntable are fixedly connected with bracket, and the lower surface of injection pipe is hinged with telescoping mechanism, and the lower surface of turntable is fixed to be connected
It is connected to concrete storehouse, the inside in concrete storehouse is fixedly connected with slush pump, and the upper surface of injection pipe is fixedly connected with injection motor,
Injection pipe is internally provided with crankshaft, and connecting rod is rotatably connected on crankshaft, and the other end of connecting rod is hinged with sliding panel, and the present invention can
With simultaneously in the horizontal plane with spray angle is adjusted in vertical plane, adjustment speed is fast, substantially increases flexibility ratio when use.
However use existing concrete injection device gunite concrete operation process in, the concrete of high speed ejection with enclose
It can be sprung back after rock and the concrete being already attached on country rock surface collision, part concrete springback is caused to splash down, be detached from
Country rock not only causes waste of material, but also influences construction speed.In order to reduce concrete springback loss, improve construction effect
Rate needs to develop a kind of technique device that can prevent rebound of shotcrete.
Summary of the invention
It is an object of the invention to splash down for concrete springback during concrete ejection in the prior art, be detached from country rock
The problem of, a kind of pulsed concrete-pressure-air combined jet device and concrete injection method are provided, and then significantly subtract
The rebound of few concrete is splashed down, and construction efficiency is improved, and reduces project cost.
For the attainment of one's purpose, technical solution provided by the invention are as follows:
A kind of pulsed concrete-pressure-air combined jet device of the present invention, including it is pulse-control system, mixed
Solidifying soil spray gun, pressure-air spraying system and pressure-air spray head；
The pressure-air spray head includes horn mouth and end plate, and end plate is fixed with bell-mouthed small-caliber end, end plate
Center is equipped with concrete gun and is inserted into hole, and concrete gun, which is inserted into around hole, is equipped with several air inlets arranged according to even circumferential
Mouthful；
The concrete gun is connected to concrete gun insertion hole, is furnished with concrete pump and concrete valve, is mixed
Solidifying soil pump and concrete valve are communicated to connect with pulse-control system；
The pressure-air spraying system is connected to air inlet, is furnished with air pressure pump and pressure-air valve, empty
Gas compression pump and pressure-air valve are communicated to connect with pulse-control system.
Preferably, the overall diameter of the end plate is identical as the diameter of bell-mouthed small-caliber end, concrete gun insertion
The aperture in hole and the overall diameter of concrete gun match.
Preferably, the pressure-air spraying system includes several air inlet pipe, the quantity of air inlet pipe and position respectively with
The quantity of air inlet and position are corresponding, and air inlet pipe is fixed at air inlet by welding.
Preferably, the end plate is equipped with several hold-down supports, and hold-down support is arranged in concrete according to even circumferential
Spray gun is inserted into hole surrounding, is equipped with screw hole on each hold-down support, and the concrete gun passes through the bolt that is located at screw hole
It is detachably connected with end plate.
Preferably, the pulse-control system is furnished with parameter setting interface.
It is a kind of based on above-mentioned pulsed concrete-pressure-air combined jet device concrete injection method, feature
It is comprising following steps:
S1: under the control of pulse-control system, concrete pump and concrete valve are opened simultaneously, concrete gun injection
Coagulation mass of soil, closes concrete valve, and concrete gun stops gunite concrete；
S2: under the control of pulse-control system, air pressure pump and pressure-air valve are opened simultaneously, pressure-air spray
Head injection pressure-air；
S3: the pressure-air of ejection forms conical pressure-air cover, pressure-air cover at the back side of concrete and side
It flies along with coagulation mass of soil, after coagulation mass of soil and tunnel surrounding collision, part concrete occurs rebound and splashes down, pressure-air cover
The pressure of generation stops concrete springback and splashes down, and pushes back the concrete of rebound is counter.
Preferably, the pressure of concrete ejection, the beginning and ending time of injection are arranged in parameter setting interface in the S1；
The injection pressure of the S2 mesohigh air, the beginning and ending time of injection are arranged in parameter setting interface.
Preferably, the injection pressure of pressure-air is greater than the injection pressure of concrete.
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
1, pulsed concrete proposed by the present invention-pressure-air combined jet device can will be sprayed by pressure-air cover
The concrete of injection is firmly extruded on country rock, can not only stop concrete springback, avoids waste of material, can also smooth,
Squeeze and the concrete being already attached on country rock that vibrates, make contact of the concrete with country rock be stronger, inside concrete not
Cavity and gap can be generated, relative to traditional construction of shotcrete technique, it is brighter and cleaner smooth to be formed by first lining cutting,
Improve the construction quality and efficiency of first lining cutting.
2, pressure-air spray head used in the present invention can be directly nested on original concrete gun, not had to original
Equipment carries out big transformation, simple structure low cost, and the pressure-air sprayed will not influence the sight of construction personnel, is spraying
Before concrete construction, the rubble and dregs being attached on country rock surface can be cleared up with pressure-air, improve applying for first lining cutting
Working medium amount.
3, pulsed jet control system is set according to the actual situation by the way of mouse drag pressure and time control strip
The parameters such as injection pressure and the injection beginning and ending time of concrete and pressure-air are set, can control pressure-air and concrete ejection
Overlapping or the time interval delayed.
Detailed description of the invention
Fig. 1 is pressure-air spray head of the present invention and concrete gun scheme of installation；
Fig. 2 is the side view of pressure-air spray head and concrete gun mounting structure of the present invention；
Fig. 3 is end plate organigram；
Fig. 4 is the structural schematic diagram of pressure-air spray head；
Fig. 5 is pulsed concrete-pressure-air combined jet device working principle diagram；
Fig. 6 is the parameter setting interface figure of pulse-control system；
Fig. 7 is pulsed concrete-pressure-air combined jet device mechanism of action schematic diagram.
Illustrate: horn mouth 1, end plate 2, concrete gun insertion hole 3, air inlet 4, air inlet pipe 5, hold-down support 6, into
Tracheae weld seam 7, hold-down support weld seam 8, horn mouth weld seam 9, bolt 10, concrete gun 11, pressure-air valve 12, concrete
Valve 13, concrete pump 14, air pressure pump 15, coagulation mass of soil 16, pressure-air cover 17, country rock surface 18.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the embodiments, and following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
In conjunction with shown in attached drawing 1 and 5, a kind of pulsed concrete-pressure-air combined jet device of the present invention, packet
Include pulse-control system, concrete gun, pressure-air spraying system and pressure-air spray head.
In conjunction with shown in attached drawing 1~4, the pressure-air spray head includes horn mouth 1 and end plate 2.The horn mouth 1 is
It is made of variable cross-section thin-walled hollow round tube, the diameter of small-caliber end is identical as the overall diameter of end plate 2, and the diameter of big mouth needs basis
Actual needs is calculated.The end plate 2 is circular ring shape steel plate, the small-caliber end diameter phase of the overall diameter and horn mouth 1 of end plate 2
Together, the center of end plate 2 be equipped with concrete gun be inserted into hole 3, concrete gun insertion hole 3 around set there are four according to circumference it is equal
The overall diameter of the air inlet 4 of even arrangement, the jet pipe in the aperture and concrete gun 11 in concrete gun insertion hole 3 matches (i.e.
The aperture that concrete gun is inserted into hole 3 is slightly larger than the diameter of the jet pipe of concrete gun 11).End plate 2 is small-bore with horn mouth 1
End is fixed by welding, and horn mouth weld seam 9 is formed between end plate 2 and horn mouth 1.There are four being set on the end plate 2
Hold-down support 6, hold-down support 6 are rectangular steel plates, and hold-down support 6 is arranged in concrete gun insertion hole 3 according to even circumferential
Surrounding is equipped with screw hole on each hold-down support 6, and hold-down support 6 is fixed with end plate 2 by the way of welding, hold-down support 6 with
Hold-down support weld seam 8 is formed between end plate 2.
In conjunction with shown in attached drawing 1 and 5, the concrete gun 11 and concrete gun insertion hole 3 be connected tos, when connection, general
In the jet pipe insertion concrete gun insertion hole 3 of concrete gun 11, and with the bolt in the screw hole being arranged at hold-down support 6
The jet pipe of 10 locking concrete guns 11, concrete gun 11 are furnished with concrete pump 14 and concrete valve 13, concrete pump 14
It is communicated to connect with pulse-control system with concrete valve 13, pulse-control system is to concrete pump 14 and concrete valve 13
Issue the signal opened and closed.
In conjunction with shown in attached drawing 1 and 5, the pressure-air spraying system is connected to air inlet 4, pressure-air spraying system
Including several air inlet pipe 5, the quantity of air inlet pipe 5 and position are corresponded with the quantity of air inlet 4 and position respectively, air inlet pipe 5
It is fixed at air inlet 4 by welding, forms air inlet pipe weld seam 7 between air inlet pipe 5 and end plate 2.Pressure-air injection
System is also equipped with air pressure pump 15 and pressure-air valve 12, air pressure pump 15 and pressure-air valve 12 with pulse control
System communication connection processed, pulse-control system issue opening and closing to air pressure pump 15 and pressure-air valve 12 respectively
Signal, when the jet pipe of concrete gun 11 is fixed at concrete gun insertion hole 3, the high pressure of pressure-air spraying system is empty
Gas blowout pipe is just inserted into air inlet pipe 5.
In conjunction with shown in attached drawing 6, the pulse-control system is furnished with parameter setting interface, is controlled using injection pressure and time
Concrete and air injection pressure value, the control parameters such as beginning and ending time of injection is arranged in the mode of item processed.
In conjunction with shown in attached drawing 5~7, sprayed using above-mentioned pulsed concrete-pressure-air combined jet device concrete
Shooting method includes the following steps,
Step 1: the pressure-air jet pipe of pressure-air spraying system is nested on concrete gun, and with passing through spiral shell
The spray head of concrete gun is fixed in the concrete gun insertion hole 3 of the end plate 2 of pressure-air spray head by bolt 10, pressure-air
The pressure-air jet pipe of spraying system is inserted into corresponding air inlet pipe 5, and pressure-air spray head will follow the synchronous fortune of concrete gun
It is dynamic；
Step 2: beginning and ending time and the injection pressure, pressure-air injection of concrete ejection are set in the way of attached drawing 6
Beginning and ending time and injection pressure, according to real work situation can freely adjust compressed air and concrete synchronous injection or
Person lags injection, and generally, the pressure of pressure-air injection is greater than the injection pressure of concrete, because of the pressure of pressure-air injection
Less than concrete injection pressure when, may result in pressure-air can not stop, push back the concrete of rebound；
Step 3: beginning and ending time and injection pressure of the pulse-control system according to the concrete ejection being arranged in step 2,
Signal is issued to concrete pump 14 and concrete valve 13, concrete pump 14 and concrete valve 13 open simultaneously, concrete spray
Rifle gunite concrete group 16, for concrete ejection to when terminating the time, pulse-control system closes concrete valve 13, concrete spray
Rifle stops gunite concrete；
Step 4: beginning and ending time and jet pressure of the pulse-control system according to the pressure-air injection being arranged in step 2
Power issues signal to air pressure pump 15 and air compression valve 12, and air pressure pump 15 and pressure-air valve 12 are beaten simultaneously
It opens, pressure-air spray head sprays pressure-air；
Step 5: the pressure-air of ejection forms conical pressure-air cover 17, high pressure at the back side of concrete and side
Airhood 17 flies along with coagulation mass of soil 16, and after coagulation mass of soil 16 collides country rock surface 18, part concrete is sprung back
It splashes down, the pressure that pressure-air cover 17 generates can stop concrete springback and to splash down, and push back the concrete of rebound is counter, realize
The purpose for stopping concrete springback, avoids waste of material, also can smooth, squeeze and vibrate is already attached to country rock surface 18
Concrete, makes that contact of the concrete with country rock be stronger, inside concrete will not generate cavity and gap.
It describes the invention in detail in conjunction with the embodiments above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within patent covering scope of the invention.
Claims (8)
1. a kind of pulsed concrete-pressure-air combined jet device, it is characterised in that: it includes pulse-control system, mixes
Solidifying soil spray gun, pressure-air spraying system and pressure-air spray head；
The pressure-air spray head includes horn mouth and end plate, and end plate is fixed with bell-mouthed small-caliber end, the center of end plate
It is inserted into hole equipped with concrete gun, concrete gun, which is inserted into around hole, is equipped with several air inlets arranged according to even circumferential；
The concrete gun is connected to concrete gun insertion hole, is furnished with concrete pump and concrete valve, concrete
Pump and concrete valve are communicated to connect with pulse-control system；
The pressure-air spraying system is connected to air inlet, is furnished with air pressure pump and pressure-air valve, air pressure
Contracting pump and pressure-air valve are communicated to connect with pulse-control system.
2. pulsed concrete according to claim 1-pressure-air combined jet device, it is characterised in that: described
The overall diameter of end plate is identical as the diameter of bell-mouthed small-caliber end, and concrete gun is inserted into aperture and the concrete gun in hole
Overall diameter matches.
3. pulsed concrete according to claim 1-pressure-air combined jet device, it is characterised in that: described
Pressure-air spraying system includes several air inlet pipe, the quantity of air inlet pipe and position respectively with the quantity of air inlet and position pair
It answers, air inlet pipe is fixed at air inlet by welding.
4. pulsed concrete according to claim 1-pressure-air combined jet device, it is characterised in that: described
End plate is equipped with several hold-down supports, and hold-down support is arranged in concrete gun insertion hole surrounding, Mei Gegu according to even circumferential
Determine to be equipped with screw hole on support, the concrete gun is detachably connected by being located at the bolt at screw hole with end plate.
5. pulsed concrete according to claim 1-pressure-air combined jet device, it is characterised in that: described
Pulse-control system is furnished with parameter setting interface.
6. a kind of based on pulsed concrete described in claim 1-pressure-air combined jet device concrete ejection side
Method, which is characterized in that itself the following steps are included:
S1: under the control of pulse-control system, concrete pump and concrete valve are opened simultaneously, and concrete gun sprays coagulation
Mass of soil, closes concrete valve, and concrete gun stops gunite concrete；
S2: under the control of pulse-control system, air pressure pump and pressure-air valve are opened simultaneously, the spray of pressure-air spray head
Penetrate pressure-air；
S3: the pressure-air of ejection forms conical pressure-air cover at the back side of concrete and side, and pressure-air cover is adjoint
Coagulation mass of soil flight, coagulation mass of soil and tunnel surrounding collision after, part concrete occur rebound splashes down, pressure-air cover generate
Pressure stop concrete springback and to splash down, and the concrete of rebound is reversely pushed back.
7. concrete injection method according to claim 6, it is characterised in that: the pressure of concrete ejection in the S1,
The beginning and ending time of injection is arranged in parameter setting interface；The injection pressure of the S2 mesohigh air, injection start-stop when
Between be arranged in parameter setting interface.
8. concrete injection method according to claim 6 or 7, it is characterised in that: the injection pressure of pressure-air is greater than
The injection pressure of concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058258.XA CN109595012A (en) | 2019-01-22 | 2019-01-22 | Pulsed concrete-pressure-air combined jet device and concrete injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058258.XA CN109595012A (en) | 2019-01-22 | 2019-01-22 | Pulsed concrete-pressure-air combined jet device and concrete injection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109595012A true CN109595012A (en) | 2019-04-09 |
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ID=65965243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910058258.XA Pending CN109595012A (en) | 2019-01-22 | 2019-01-22 | Pulsed concrete-pressure-air combined jet device and concrete injection method |
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| Country | Link |
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| CN (1) | CN109595012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158960A (en) * | 2019-06-27 | 2019-08-23 | 万正河 | A kind of concrete for construction engineering spraying machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756688A (en) * | 2016-04-13 | 2016-07-13 | 中铁十六局集团北京轨道交通工程建设有限公司 | Sprayer device and construction method for improving concrete spraying quality |
| CN205638480U (en) * | 2016-04-13 | 2016-10-12 | 中铁十六局集团北京轨道交通工程建设有限公司 | Qualities of concrete sprays are improved shower nozzle device |
| CN209510340U (en) * | 2019-01-22 | 2019-10-18 | 浙江科技学院 | A kind of pulsed concrete-pressure-air combined jet device |
-
2019
- 2019-01-22 CN CN201910058258.XA patent/CN109595012A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756688A (en) * | 2016-04-13 | 2016-07-13 | 中铁十六局集团北京轨道交通工程建设有限公司 | Sprayer device and construction method for improving concrete spraying quality |
| CN205638480U (en) * | 2016-04-13 | 2016-10-12 | 中铁十六局集团北京轨道交通工程建设有限公司 | Qualities of concrete sprays are improved shower nozzle device |
| CN209510340U (en) * | 2019-01-22 | 2019-10-18 | 浙江科技学院 | A kind of pulsed concrete-pressure-air combined jet device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158960A (en) * | 2019-06-27 | 2019-08-23 | 万正河 | A kind of concrete for construction engineering spraying machine |
| CN110158960B (en) * | 2019-06-27 | 2021-01-26 | 上海通核建筑科技有限公司 | Concrete sprayer for building engineering |
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