CN209687506U - Wear river shallow buried covered excavation electric power tunnel constructing structure - Google Patents
Wear river shallow buried covered excavation electric power tunnel constructing structure Download PDFInfo
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- CN209687506U CN209687506U CN201920065631.XU CN201920065631U CN209687506U CN 209687506 U CN209687506 U CN 209687506U CN 201920065631 U CN201920065631 U CN 201920065631U CN 209687506 U CN209687506 U CN 209687506U
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Abstract
Wear river shallow buried covered excavation electric power tunnel constructing structure the utility model discloses one kind, especially it is a kind of be related to electric power tunnel construction field wear river shallow buried covered excavation electric power tunnel constructing structure.The utility model wears river shallow buried covered excavation electric power tunnel constructing structure, including active well and electric power tunnel barrel, the active well is arranged along the vertical direction, the top half of the active well is identical as ground, the lower half portion of the active well is connected to electric power tunnel barrel, it is provided with steel arch-shelf in the electric power tunnel barrel, just lining, waterproof layer and two linings are provided in the electric power tunnel barrel.Wearing river shallow buried covered excavation electric power tunnel constructing structure construction safety capable of being effectively ensured for the utility model, effectively prevent the safety accidents such as permeable, piping, collapsing.
Description
Technical field
The utility model relates to one kind to wear river shallow buried covered excavation electric power tunnel constructing structure, and especially one kind is related to electric power tunnel
Construction field wears river shallow buried covered excavation electric power tunnel constructing structure.
Background technique
Conventional electric power conveying generallys use overhead transmission line as transmission line of electricity, since overhead transmission line not only influences city beauty
It sees, safe construction also occurs often, for this purpose, the prior art is laid with transmission line of electricity, the prior art using the method for electric power tunnel
Middle underground electric method for tunnel construction mainly has: slot grooving, jacking construction, Dryopteris sublaetaChing et Hsu etc..Shallow burial hidden digging be
A kind of method of various types underground chamber boring construction is carried out apart from the closer underground of earth's surface.Shallow buried covered excavation electric power tunnel passes through
River bed, difficulty of construction is larger, and construction safety can not be completely secured in the advanced tubule technology of the prior art, effectively prevent
The generation of the safety accidents such as water, piping, collapsing, exhaust gas poisoning.
Utility model content
The technical issues of the utility model is solved be to provide it is a kind of construction safety can be effectively ensured, effectively prevent it is permeable,
The safety accidents such as piping, collapsing wear river shallow buried covered excavation electric power tunnel constructing structure.
The utility model is used in order to solve the above problem to wear river shallow buried covered excavation electric power tunnel constructing structure, including work
Well and electric power tunnel barrel, the active well are arranged along the vertical direction, and the top half of the active well is communicated with ground, described
The lower half portion of active well is connected to electric power tunnel barrel, and steel arch-shelf, the electric power tunnel are provided in the electric power tunnel barrel
Just lining, waterproof layer and two linings are provided in road barrel.
Further, the tunneling boring that is just provided between lining and two linings is laid with guarded drainage separation layer.
Further, being additionally provided with rubber fastening band in the electric power tunnel barrel.
Further, the steel arch-shelf is welded to connect by longitudinally connected muscle.
Further, be additionally provided with lock foot anchoring stock and system anchor bolt in the electric power tunnel barrel, lock foot anchoring stock and it is
Anchor pole of uniting is welded to connect with steel arch-shelf.
Further, the Shaft bank is provided with a grade water bank of laying bricks.
Further, the electric power tunnel barrel inner sidewall is hung with illumination cable, the illumination cable peripheral hardware is equipped with
PVC plastic pipe, explosion-proof lamp is additionally provided in the electric power tunnel barrel, and the explosion-proof lamp is connect with illumination cable.
Further, the electric power tunnel barrel inner sidewall is provided with pre-buried cable bearer slot.
The beneficial effects of the utility model are: power transmission line is laid on the electric power tunnel barrel of the application by application
It is interior, so that power transmission line is worn river and mistake, keep power supply safety reliable, not the influence of climate variation, due to power Transmission
Therefore track laying does not take up an area face and space in electric power tunnel barrel, since power transmission line is closed in electric power tunnel hole
In body, therefore the influence of Electromagnetic Radiation on Environment can be greatly reduced.Wherein active well is connection, ground and electric power tunnel barrel
Channel, make personnel, what equipment etc. can be convenient passes in and out between electric power tunnel barrel and ground.And it is set in electric power tunnel barrel
The steel arch-shelf set can provide electric power tunnel effective support, can prevent tunnel cave.The application uses first lining and two
The method of lining bilayer lining cutting, can be further improved the stability of electric power tunnel hole structure.Furthermore the application is also in electric power tunnel
It is provided with waterproof layer in road barrel, the generation of the safety accidents such as permeable, piping can be effectively prevented.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application.
In the figure, it is marked as electric power tunnel barrel 1, first lining 2, two linings 3, cable bearer slot 4.
Specific embodiment
As shown in Figure 1, the application's wears river shallow buried covered excavation electric power tunnel constructing structure, including active well and electric power tunnel
Body 1, the active well are arranged along the vertical direction, and the top half of the active well is identical as ground, the lower half of the active well
Part is connected to electric power tunnel barrel 1, and steel arch-shelf is provided in the electric power tunnel barrel 1, is set in the electric power tunnel barrel 1
It is equipped with just lining 2, waterproof layer and two linings 3.Power transmission line is laid on the electric power tunnel barrel 1 of the application by the application
It is interior, so that power transmission line is worn river and mistake, keep power supply safety reliable, not the influence of climate variation, due to power Transmission
Therefore track laying does not take up an area face and space in electric power tunnel barrel 1, since power transmission line is closed in electric power tunnel
In barrel 1, therefore the influence of Electromagnetic Radiation on Environment can be greatly reduced.Wherein active well is connection, ground and electric power tunnel
The channel of barrel 1, makes personnel, and what equipment etc. can be convenient passes in and out between electric power tunnel barrel 1 and ground.And electric power tunnel
The steel arch-shelf being arranged in body 1 can provide electric power tunnel effective support, can prevent tunnel cave.The application is using just lining
The method of layer 2 and the double-deck lining cutting of two lining 3, can be further improved the stability of electric power tunnel hole structure.Furthermore the application is gone back
It is provided with waterproof layer in electric power tunnel barrel 1, the generation of the safety accidents such as permeable, piping can be effectively prevented.
The application is provided with tunneling boring between first lining 2 and two linings 3 and is laid with guarded drainage separation layer.It is just serving as a contrast in this way
On the basis of construction guarded drainage separation layer can be convenient draining separation layer construction, while construct after the completion of guarded drainage separation layer can
To effectively prevent the generation of the safety accidents such as permeable, piping, and it can protect two linings 3 positioned at innermost layer.
In order to further increase the waterproof effect of the application, the application is also additionally provided with rubber in electric power tunnel barrel 1
Waterstop.
In order to improve the structural stability of steel arch-shelf, the application steel arch-shelf is welded to connect by longitudinally connected muscle.
It is additionally provided with lock foot anchoring stock and system anchor bolt in the electric power tunnel barrel 1, lock foot anchoring stock and system anchor bolt and steel
Arch is welded, and so that anchor pole and steel arch-shelf is formed a common carrying system, to increase the bearing capacity of whole system.
The application also lays bricks a grade water bank to Shaft bank.It is flowed into well to prevent the surface water；And guardrail is set, to guarantee constructor
Member's safety.
The application is also hung with illumination cable in 1 inner sidewall of electric power tunnel barrel, and the illumination cable peripheral hardware is equipped with PVC plastic
Expects pipe, explosion-proof lamp is additionally provided in the electric power tunnel barrel 1, and the explosion-proof lamp is connect with illumination cable.Illumination cable is hole
Explosion-proof lamp in body provides power supply, and explosion-proof lamp is to provide illumination in hole, to facilitate construction, while using anti-riot lamp, can be to avoid
The safety accidents such as explosion occur.
In order to facilitate the laying of cable, 1 inner sidewall of electric power tunnel barrel of the application is provided with pre-buried cable bearer slot 4.
Cable bearer can be mounted in pre-buried cable bearer slot 4, install and be laid with along cable bearer so as to cable, improve cable paving
If convenience.
When Specific construction, wears river constructing tunnel and cut off the water supply to increase barrel vault advanced support and combine mode using cofferdam and applied
Work.Construction technique principle is: first doing cofferdam construction shunts river water, then Dewatering well, then Construction of Silo, finally carries out
Pipe canopy and tunnel main body construction.
Wherein, the cofferdam Chuan He carries out the half side processing mode for crossing water using being divided to for two phases constructed, and the paragraph first implemented carries out
One phase cofferdam construction.Guarantee that implementation section tunnel upper non-water flow passes through.After the shirt portion point at the beginning of implemented tunnel, implement two in time
Phase cofferdam crosses water to clear water river and changes its course, into next section of constructing tunnel.
Rise out peak level absolute altitude 1m in cofferdam；Cofferdam shape will be conducive to water flow and drain, and size should not compress flowing water section
Excessively, so as not to choke water it is excessively high endanger cofferdam safety.
Weir body size section will guarantee there are enough strength and stabilities, guarantee that cofferdam does not rupture, slides or topples；
It takes measures to prevent or reduce leakage, reduces drainage works, washing away for cofferdam periphery side slope reinforce and to electric behind cofferdam
The riverbed of power tunnel upper carries out reinforcing cure process.
Tunneling paragraph dewatering well avoids underground utilities and ground barrier when arranging well selection.If part is because of underground water
Position is high, is unable to lowering of watertable, uses bore to carry out bright draining for the sewage submersible pump of Φ 100 and carries out precipitation, precipitation warp
It is discharged into pipe network after settling pit.
The earthwork of working pit is excavated using excavator or hand excavation, and crane allocation and transportation are unearthed.
I-steel is installed, laterally screwed joint is arranged between each branch in I-steel, carries out tying up weldering connection when necessary；I-steel
Mesh sheet and Vertical bar connection are used between vertical, dowel uses single welding.Segmentation, fragment, layering when concrete spraying operation, under
It is successively carried out on and, jetting cement closely follows working face.Into subsequent cycle excavate, supporting, until at the beginning of wall branch structure complete, press more than
Step carries out, and just props up until completing whole vertical shaft walls, the reserved pre-inserted reinforcing bar of level connecting with bottom plate of final step.
Shaft bank is laid bricks a grade water bank, is flowed into well to prevent the surface water；And guardrail is set, to guarantee construction personnel's safety.
Pipe canopy conduit is drilled using down-the-hole drill, must extension bar when drilling deep hole.To prevent drilling rod in thrust and vibration force
It under double action, trembles up and down, causes drilling not straight, when drilling, should be put down forward helping straight device to cover on drilling rod with rod boring
It moves.
The guide hole that the technique combined using macropore guidance and canopy pipe drilling, i.e. subdrilling are greater than the slip casting of canopy pipe, it is then sharp
Rotation pressure is not used with rock drill when impact and the thrust jacking canopy pipe of drilling machine, does not generate the canopy that torque will be equipped with work tube head
Pipe is along guide hole jacking, spreading canopy pipe section by section, until bottom hole.
Drilling rod is withdrawn from after the completion of drilling, leaves conduit, filling adaptor on connection can carry out stratum slip casting, and injecting paste material is adopted
With neat slurry, starched when underground water is big using cement-sodium silicate.
Barrel country rock Shallow Section, barrel construction strictly observes first supporting, rear to excavate, and short drilling depth is fast to close, the original frequently measured
Then.
It is mainly excavated using mini-excavator in excavation, is assisted when necessary with pneumatic pick, reduced as far as possible and backbreak and mitigate
Disturbance and destruction to country rock.
Tunnel cutting is constructed using disjunction face excavating load.Preliminary bracing is performed immediately after upper arcuate section excavation.It interrupts
Face and excavating for lower half section should carry out after the construction supporting of upper half section is basicly stable, and conscientiously reinforce arch springing supporting, make
Top construction supporting and country rock form rounded system.Middle section and the earthwork of lower half section still use artificial and paving to open with pneumatic pick
It digs, to reduce the disturbance to periphery, and strict control excavating sideline, forbids to backbreak and owe to dig.Lower part carries out in time after the completion of excavating
Supporting, it is cyclic as early as possible.
If country rock division does not conform to the actual conditions in construction, according to monitoring measurement of wall rock as a result, timely adjustment excavation side
Formula and amendment supporting parameter.
It is horizontal in hole to be unearthed using at the artificial push to vertical shaft of manpower trolley, it is unearthed using crane at vertical shaft directly from vertical shaft
Vertical handling goes out vertical shaft ground mound field.Vertical shaft ground mound field must assure that enough safe distances.Stockyard cubic metre of earth should not mistake
Height is transported in time.
At vertical shaft when earthwork handling, vertical shaft must arrange special messenger to command up and down, forbid the people that stands under hanging basket, must coordinate up and down
Unanimously, it is got in touch with using the mode of blowing whistle.Hanging Tu Lan hook must be firmly linked with, and wirerope is without breach, hair side, and specified special messenger is regular
It checks and safeguards.
Steel arch-shelf construction is mainly set up by steel arch-shelf processing, steel arch-shelf, steel arch-shelf sprays the processes such as concrete and forms.
Steel arch-shelf processing after, through control design figure reaffirm it is errorless after, carry out setting-out on the spot, it is complete first to process a Pin
Steel arch-shelf scene carries out assembled.Check its size, welding quality, flatness etc., batch machining again after meeting the requirements.
Wherein, the step of steel arch-shelf is set up is one, carries out middle line, elevation setting-out, and setting-out middle line is accurate, and face will have
Apparent center line markings avoid steel arch-shelf from deviateing middle line and cause serious out break phenomenon.
Two, the empty quarrel at arch springing is handled, arch springing must necessarily be placed in firm foundations.When arch springing absolute altitude deficiency, no
Handy block of stone, rubble build pad, and steel plate should be arranged and be adjusted, or use concrete placings.
Three, when setting up, the spacing and every Pin steel arch-shelf fine condition vertical with tunnel middle line between Pin and Pin are checked in time,
Meet job specfication and design requirement.
Four, after steel arch-shelf has been connected and checked, longitudinally connected muscle is welded, to be met the requirements with material and circumferential spacing.
Five, every Pin steel arch-shelf carries out the construction of lock foot anchoring stock as required.Lock foot anchoring stock, system anchor bolt must and steel arch-shelf into
Row welding makes anchor pole and steel arch-shelf form a common carrying system.
Six, steel arch-shelf should erect immediately steel arch-shelf after arc groove excavation, and spray concrete should first spray between steel arch-shelf and profile
Gap, then spray around steel arch-shelf, it finally sprays between steel arch-shelf, the construction of each circulation should be sprayed after the completion of inverted arch by design requirement
Shield helps ring seal system.
Seven, after every Pin steel arch-shelf has been set up, Yao Jinhang performance rating, assessment of conformity rear can be carried out spray concrete operation.
The process of gunite concrete are as follows:
Sprinkler operational is an important link in gunite concrete operation.Thickness homogeneity, the compaction rate of concrete
And reducing reflected rate etc., it is all inseparable with correct and skilled sprinkler operational technology.
It after spraying machine installation and debugging are good, first fill the water and blows again, clear and coherent machine barrel and pipeline+high pressure wind simultaneously are by spray surface.
Injection hand picks up spray head, first has to check whether water ring eyelet is dredged, and then checks whether hydrophthalmia is installed properly.
Feeding in continuous material keeps material in machine barrel full.Sieve in the hopper port setting aperture 15mm, avoids oversize aggregate from entering machine
It is interior.Strict control amount of water.Gunite concrete can carry out next process after completing initial set 2h, hereafter wet curing be taken to arrange
It applies no less than 7 days.
Waterproof construction process are as follows:
Design requirement just serves as a contrast the tunneling boring between two linings and is laid with waterproof material as guarded drainage separation layer, mats formation from vault to two
Side laying.
Rubber water-proof tape label is fixed on structure reinforcing bars using iron wire, it is desirable that fixation is reliable, avoids pouring and shake
Waterstop lodging influences the height in embedment two sides concrete when smashing concrete.
For rubber fastening band in addition to docking, other joint areas (T font, cross) connector is all made of factory's connector, must not
Connector processing is carried out at the scene.
It pours and when the concrete of construction joint position of vibrating (especially side wall horizontal construction joint), it should be noted that while pouring and shaking
Side hand is smash by waterstop righting.Waterstop is avoided excessive snake type and lodging occur.
Horizontal construction joint due to the blocking of waterstop, clear up relatively difficult by the sundries between waterstop and building enclosure.It needs
Conscientious dabbing is carried out to construction seam surface and cleaned out.
The concrete at waterstop position must vibrate sufficiently, it is closely knit guarantee that waterstop is engaged with construction joint, this is waterstop
The key for playing sealing effect, should carry out really.Tight vibrating spear touches waterstop when vibrating.
Wherein two lining constructions are constructed in strict accordance with " concrete structure engineering construction quality accident specification " GB50204-2015,
Emphasis carries out the crack control measures of concrete, reduces the appearance of distress in concrete to the greatest extent.
Claims (8)
1. wearing river shallow buried covered excavation electric power tunnel constructing structure, it is characterised in that: including active well and electric power tunnel barrel (1), institute
Active well is stated to be arranged along the vertical direction, the top half of the active well is communicated with ground, the lower half portion of the active well with
Electric power tunnel barrel (1) connection, the electric power tunnel barrel (1) is interior to be provided with steel arch-shelf, sets in the electric power tunnel barrel (1)
It is equipped with just lining (2), waterproof layer and two linings (3).
2. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the just lining (2)
It is provided with tunneling boring between two linings (3) and is laid with guarded drainage separation layer.
3. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the electric power tunnel
Rubber fastening band is additionally provided in body (1).
4. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the steel arch-shelf passes through
Longitudinally connected muscle is welded to connect.
5. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the electric power tunnel
Lock foot anchoring stock and system anchor bolt are additionally provided in body (1), lock foot anchoring stock and system anchor bolt and steel arch-shelf are welded to connect.
6. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the active well well head
It is provided with a grade water bank of laying bricks.
7. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the electric power tunnel
Body (1) inner sidewall is hung with illumination cable, and the illumination cable peripheral hardware is equipped with PVC plastic pipe, and the electric power tunnel barrel (1) is interior
It is additionally provided with explosion-proof lamp, the explosion-proof lamp is connect with illumination cable.
8. wearing river shallow buried covered excavation electric power tunnel constructing structure as described in claim 1, it is characterised in that: the electric power tunnel
Body (1) inner sidewall is provided with pre-buried cable bearer slot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065631.XU CN209687506U (en) | 2019-01-15 | 2019-01-15 | Wear river shallow buried covered excavation electric power tunnel constructing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065631.XU CN209687506U (en) | 2019-01-15 | 2019-01-15 | Wear river shallow buried covered excavation electric power tunnel constructing structure |
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| Publication Number | Publication Date |
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| CN209687506U true CN209687506U (en) | 2019-11-26 |
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ID=68598906
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| CN201920065631.XU Active CN209687506U (en) | 2019-01-15 | 2019-01-15 | Wear river shallow buried covered excavation electric power tunnel constructing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140237A (en) * | 2020-01-08 | 2020-05-12 | 合肥市轨道交通集团有限公司 | Underground excavation method for subway tunnel tunneling |
-
2019
- 2019-01-15 CN CN201920065631.XU patent/CN209687506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140237A (en) * | 2020-01-08 | 2020-05-12 | 合肥市轨道交通集团有限公司 | Underground excavation method for subway tunnel tunneling |
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