CN207498908U - A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern - Google Patents
A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern Download PDFInfo
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- CN207498908U CN207498908U CN201721535846.0U CN201721535846U CN207498908U CN 207498908 U CN207498908 U CN 207498908U CN 201721535846 U CN201721535846 U CN 201721535846U CN 207498908 U CN207498908 U CN 207498908U
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- diversion tunnel
- reinforced concrete
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- vertical cyclindrical
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a kind of diversion tunnel vertical cyclindrical shape stopper structure pattern, it includes diversion tunnel (1), described diversion tunnel (1) periphery is provided with reinforced concrete lining layer (8), and vertical cyclindrical shape plug (2) is provided in the diversion tunnel (1)；Shallow shearing resistance slot (4) is provided on described vertical cyclindrical shape plug (2) section reinforced concrete lining layer (8) stalk；Anchor pole (6) is disposed on described vertical cyclindrical shape plug (2) section reinforced concrete lining layer (8) bottom plate；The first sealing piece (3) between country rock is set in diversion tunnel (1) the periphery reinforced concrete lining layer (8), the second sealing piece (5) is set between the vertical cyclindrical shape plug (2) and the reinforced concrete lining layer (8).The utility model, which overcomes wedge-shaped Enlargement excavation security risk in the prior art, to be increased, invests the shortcomings of larger, is had the advantages that the innovation in existing Diversion Tunnel Plug structural shape and method.
Description
Technical field
More specifically it is a kind of diversion tunnel the utility model is related to arrive Construction for Hydroelectric Project diversion technology field
Vertical cyclindrical shape stopper structure pattern.
Background technology
《Hydraulic tunnel design specification》(DL5195-2004) it provides, " section shape of the pattern of occluding body according to hydraulic tunnel
The factors such as shape, execution conditions, engineering geological condition are selected.The pattern of occluding body vertical section preferably preferentially selects wedge shape." wedge shape plug
Specific set-up mode and operational procedure are generally divided into two classes：
(1) the reserved wedge-type bodily form is excavated early period
During early period diversion tunnel construction, plug section country rock has been excavated together by the permanent plug bodily form that the later stage is formed
After the completion of into, tunnel lining the position bottom plate and side wall formed the direct overcurrent of local pit slot (part engineering smoothes out for flow,
Engineering measure is taken to protect the pit slot, protection facility is removed before pouring permanent bulkhead concrete).It is complete in diversion tunnel operation mission
Cheng Hou, lock under diversion tunnel, to diversion tunnel, permanent plug section carries out dabbing, then pours bulkhead concrete, is finally returned
Grouting, joint grouting and surface grouting etc. are filled out, has the function that rock mass carries (with reference to shown in Fig. 1) jointly with plug.
(2) later stage digs the wedge-type bodily form
After the completion of diversion tunnel runs mission, lock under diversion tunnel, the bottom plate of permanent plug section and side to diversion tunnel
Wall carries out wedge shape and digs (including removing former tunnel lining armored concrete etc.), then pours bulkhead concrete, is finally returned
Grouting, joint grouting and surface grouting etc. are filled out, has the function that rock mass carries (with reference to shown in Fig. 1) jointly with plug.
The permanent plug of diversion tunnel belongs to permanent building, and wedge-shaped stopper structure pattern overload capacity is stronger, is adopted extensively
With, but have the following disadvantages：
(1) construction investment is larger.Wedge shape, which digs, increases blasting rock move excavation project amount, backfill bulkhead concrete quantities,
And the increased consolidation grouting quantities when loose rock mass is shaken in explosion.
(2) wedge shape digs increase construction safety risk.Particularly large-scale diversion tunnel big cross section, the poor position of geological conditions
Carry out wedge-shaped Enlargement excavation security risk bigger.
(3) wedge-shaped plug digged for the later stage, plug section original diversion tunnel lining cutting armored concrete is removed, country rock digs and
Digging the destruction increased later stage consolidation grouting of rock mass all needs to occupy the straight line duration, is unfavorable for simplifying construction, shortens the construction period, saves
Save construction investment.
(4) wedge-shaped plug is reserved for excavating early period, permanent plug section reserves the meeting of pit slot position during diversion tunnel overcurrent
Unfavorable flow-shape is formed, influences diversion tunnel discharge capacity；Local cavitation erosion is easily formed when flow velocity is larger, influences diversion tunnel fortune
Row safety.
Utility model content
The purpose of the utility model is to overcome the shortcoming of above-mentioned background technology, and propose a kind of diversion tunnel right cylinder
Shape stopper structure pattern.
The purpose of this utility model is implemented by following technical solution：A kind of diversion tunnel vertical cyclindrical shape stopper structure
Pattern, it includes diversion tunnel, and the diversion tunnel inner peripheral wall is provided with reinforced concrete lining layer, the diversion tunnel
Vertical cyclindrical shape plug is provided in hole；
In the vertical cyclindrical shape plug and the diversion tunnel contact surface on the both sides stalk of reinforced concrete lining layer
It is provided with shallow shearing resistance slot；
The uniform cloth on reinforced concrete lining layer bottom plate in the vertical cyclindrical shape plug and the diversion tunnel contact surface
It is equipped with anchor pole.
In the above-mentioned technical solutions：First is set between the diversion tunnel periphery reinforced concrete lining layer and country rock
Sealing piece sets the second sealing piece between the vertical cyclindrical shape plug and the reinforced concrete lining layer.
In the above-mentioned technical solutions：First sealing piece and the second sealing piece pour pre contract mortar using fluting
Mode is buried.
In the above-mentioned technical solutions：The shallow shearing resistance slot flows downstream on the reinforced concrete lining layer both sides stalk
Direction arranged for interval.
In the above-mentioned technical solutions：The depth of the shallow shearing resistance slot is protected no more than the reinforced concrete lining layer reinforcing bar
Covering thickness.
The utility model has the following advantages that：
(1) wedge shape is avoided to dig causes in-place blasting out to injure surrounding rock of chamber, reduces wedge-shaped Enlargement excavation security risk, special
It is not that features as poor geologic condition, the permanent plug of large cross-sectional diversion tunnel dig the construction safety risk brought.(such as black East Germany power station mistake
Water cross dimensions is 16.5m × 24m (wide × high), excavated section 18.9m × 26.4m (wide × high), according to wedge-shaped plug knot
Configuration formula then digs rear excavated section size up to 24.9m × 28.2m (wide × high), and the increasing of section span broadens 6m, this practicality is new
Type technical solution reduces large span Enlargement excavation security risk.)
(2) cost saving, reduce wedge shape dig, concrete backfill and consolidation grouting quantities.(such as black East Germany water power
Diversion Tunnel Plug of standing uses technical solutions of the utility model, and dismounting reinforced concrete lining layer is saved in single hole and country rock digs engineering
Measure nearly 4000m3, it is corresponding to reduce the nearly 4000m of fill concrete3, about 2,410,000 yuan of cost saving, construction investment save amplitude reach
18%.)
(3) construction period is saved, most of diversion tunnel permanent plug construction periods are more nervous, the utility model skill
Art scheme eliminates demolition blasting and because in-place blasting out country rock consolidation grouting construction period.(as black East Germany power station wedge shape is blocked up
The header structure pattern construction period is 5.5 months, and the technical solutions of the utility model plug construction period is 4.5 months, saves the duration
About 1 month.)
(4) facilitate construction, be conducive to excavate by standard section tissue diversion tunnel and reinforced concrete lining layer is constructed, avoid
The difficulty of construction and the adverse effect to flow-shape that special-shaped section is brought.
(5) Diversion Tunnel Plug construction period upstream and each working tunnel are in full closeding state, only by construction ventilation
Facility improves hole inner air flow situation, and wedge shape, which digs, causes air pollution and construction environment in hole to deteriorate, the utility model skill
Art scheme is conducive to construction personnel's labour protection.
Description of the drawings
Fig. 1 is conventional diversion tunnel wedge shape plug plan view.
Fig. 2 is the utility model diversion tunnel vertical cyclindrical shape plug profilograph.
Fig. 3 is shallow shearing resistance slot drawing in the utility model.
Fig. 4 is diversion tunnel vertical cyclindrical shape plug drawing in side sectional elevation in the utility model.
In figure：It is diversion tunnel 1, vertical cyclindrical shape plug 2, the first sealing piece 3, shallow shearing resistance slot 4, the second sealing piece 5, anchor pole 6, pre-
Contracting mortar 7, reinforced concrete lining layer 8.
Specific embodiment
The performance of the utility model is described in detail below in conjunction with the accompanying drawings, but they are not formed to the utility model
Limit, it is only for example, while by illustrating the utility model the advantages of will become clearer and be readily appreciated that.
Technical solutions of the utility model replace (or cancellation) permanent plug of diversion tunnel to dig sphenoid structural shape, avoid
Diversion tunnel sets and diversion tunnel progress explosion is digged during permanent plug；The diversion tunnel construction phase reinforced concrete lining layer with
Pre-buried first sealing piece between country rock；Diversion tunnel blocks the phase in the plug hole of setting section using dabbing, the shallow shearing resistance slot of cutting, chisel
Slot directly pours bulkhead concrete after burying the structural measures such as the second sealing piece and backplane anchor pole；Simplify construction, save work
Journey is invested and the construction period, is innovated in the permanent stopper structure pattern of existing diversion tunnel.
With reference to shown in Fig. 2-4：A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern, it includes diversion tunnel 1, and described leads
Stream 1 inner peripheral wall of tunnel is provided with reinforced concrete lining layer 8, and vertical cyclindrical shape plug 2 is provided in 1 hole of diversion tunnel；
The both sides stalk of reinforced concrete lining layer 8 in the vertical cyclindrical shape plug 2 and 1 contact surface of diversion tunnel
On be provided with shallow shearing resistance slot 4；
In the vertical cyclindrical shape plug 2 and 1 contact surface of diversion tunnel on 8 bottom plate of reinforced concrete lining layer uniformly
It is disposed with anchor pole 6.
The first sealing piece 3 is set between the 1 periphery reinforced concrete lining layer 8 of diversion tunnel and country rock, described
Vertical cyclindrical shape plug 2 and the reinforced concrete lining layer 8 between the second sealing piece 5 is set.
First sealing piece 3 and the second sealing piece 5 are buried in a manner that fluting pours pre contract mortar 7.
The shallow shearing resistance slot 4 Parallel to the flow direction arranged for interval (figure on the 8 both sides stalk of reinforced concrete lining layer
Middle arrow is water (flow) direction).
The depth of the shallow shearing resistance slot 4 is not more than 8 thickness of protection tier of reinforced concrete lining layer.
The sealing piece 5 also can be arranged in diversion tunnel construction phase pre-plugged and suitably protecting is taken during overcurrent
Measure.
The utility model further includes a kind of method of diversion tunnel vertical cyclindrical shape stopper structure pattern, it includes the following steps：
1., slot in country rock before described 1 periphery reinforced concrete lining layer 8 of diversion tunnel construction and embedded first to stop
Then water piece 3 pours the reinforced concrete lining layer 8；
2., after the diversion tunnel 1 completes water conservancy diversion mission, 1 time lock closure of diversion tunnel, in the steel
Reinforced concrete lining cutting 8 is slotted embedded with 2 contact surface of vertical cyclindrical shape plug by upstream section along the 1 hole week of diversion tunnel
There is the second sealing piece 5；
3., dabbing processing is carried out, and in the reinforced concrete lining layer 8 to 8 surface of reinforced concrete lining layer
The shallow shearing resistance slot 4 is dug on the stalk of both sides；
4., the anchor pole 6 on construction 8 bottom plate of reinforced concrete lining layer；
5., pour 2 concrete of vertical cyclindrical shape plug, rockfill grouting is carried out to 2 crown of vertical cyclindrical shape plug, is treated
Joint grouting and surface grouting are carried out after vertical cyclindrical shape plug 2 concrete cooling to design requirement temperature.
The shallow shearing resistance slot 4 Parallel to the flow direction arranged for interval on the 8 both sides stalk of reinforced concrete lining layer.
Above-mentioned unspecified part is the prior art.
Claims (3)
1. a kind of diversion tunnel vertical cyclindrical shape stopper structure pattern, it is characterised in that：It includes diversion tunnel (1), the water conservancy diversion
Tunnel (1) inner peripheral wall is provided with reinforced concrete lining layer (8), and vertical cyclindrical shape plug is provided in the diversion tunnel (1) hole
(2)；
The both sides of reinforced concrete lining layer (8) are straight in the vertical cyclindrical shape plug (2) with described diversion tunnel (1) contact surface
Shallow shearing resistance slot (4) is provided on wall；
In the vertical cyclindrical shape plug (2) and described diversion tunnel (1) contact surface on reinforced concrete lining layer (8) bottom plate
It is even to be disposed with anchor pole (6)；
The first sealing piece (3) is set between country rock in diversion tunnel (1) the periphery reinforced concrete lining layer (8), in institute
The second sealing piece (5) is set between the vertical cyclindrical shape plug (2) and the reinforced concrete lining layer (8) stated；
First sealing piece (3) and the second sealing piece (5) are buried in a manner that fluting pours pre contract mortar (7).
2. a kind of diversion tunnel vertical cyclindrical shape stopper structure pattern according to claim 1, it is characterised in that：Described is shallow anti-
Cut slot (4) Parallel to the flow direction arranged for interval on reinforced concrete lining layer (8) both sides stalk.
3. a kind of diversion tunnel vertical cyclindrical shape stopper structure pattern according to claim 2, it is characterised in that：Described is shallow anti-
The depth for cutting slot (4) is not more than described reinforced concrete lining layer (8) thickness of protection tier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535846.0U CN207498908U (en) | 2017-11-14 | 2017-11-14 | A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535846.0U CN207498908U (en) | 2017-11-14 | 2017-11-14 | A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern |
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| CN207498908U true CN207498908U (en) | 2018-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724351A (en) * | 2017-11-14 | 2018-02-23 | 长江勘测规划设计研究有限责任公司 | A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern and method |
| CN109357923A (en) * | 2018-11-09 | 2019-02-19 | 中国科学院武汉岩土力学研究所 | A kind of country rock-lining cutting contact surface device and method that reduction tensioning splitting generates |
| CN110499740A (en) * | 2019-08-01 | 2019-11-26 | 四川大学 | The safe method for blocking of diversion tunnel under a kind of hydroelectric project high water head unfavorable geological condition |
-
2017
- 2017-11-14 CN CN201721535846.0U patent/CN207498908U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724351A (en) * | 2017-11-14 | 2018-02-23 | 长江勘测规划设计研究有限责任公司 | A kind of diversion tunnel vertical cyclindrical shape stopper structure pattern and method |
| CN109357923A (en) * | 2018-11-09 | 2019-02-19 | 中国科学院武汉岩土力学研究所 | A kind of country rock-lining cutting contact surface device and method that reduction tensioning splitting generates |
| CN109357923B (en) * | 2018-11-09 | 2020-05-26 | 中国科学院武汉岩土力学研究所 | Device and method for reducing surrounding rock-lining contact surface generated by tension splitting |
| CN110499740A (en) * | 2019-08-01 | 2019-11-26 | 四川大学 | The safe method for blocking of diversion tunnel under a kind of hydroelectric project high water head unfavorable geological condition |
| CN110499740B (en) * | 2019-08-01 | 2021-06-08 | 四川大学 | Safe blocking method for diversion tunnel under unfavorable geological condition of high water head in hydroelectric engineering |
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