CN208733572U - A kind of non-pressure tunnel access path with blow vent - Google Patents
A kind of non-pressure tunnel access path with blow vent Download PDFInfo
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- CN208733572U CN208733572U CN201821189639.9U CN201821189639U CN208733572U CN 208733572 U CN208733572 U CN 208733572U CN 201821189639 U CN201821189639 U CN 201821189639U CN 208733572 U CN208733572 U CN 208733572U
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- blow vent
- pressure tunnel
- tunnel
- access path
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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 non-pressure tunnel access path with blow vent, access path section, blow vent section are set gradually in working tunnel end, blow vent section intersects with non-pressure tunnel section, access path section uses square shape bearing structure, hollow bearing structure top, which is provided with channel, to be made to communicate between working tunnel and blow vent section, is provided with air grid steel mesh on a passage.The non-pressure tunnel section includes non-pressure tunnel non-standard segment and non-pressure tunnel standard paragraphs, using the straight hole section of half gateway opening, half rectangular cross section, the straight hole section of half gateway opening, half rectangular cross section is connected with non-pressure tunnel standard paragraphs using half of formula transition for non-pressure tunnel non-standard segment and blow vent section intersection.The utility model had both met the requirement that long range non-pressure tunnel is overhauled into hole, but also with long range non-pressure tunnel aeration condition；Structure arrangement is economical and practical, improves the degree of safety and service efficiency of non-pressure tunnel operation.
Description
Technical field
The utility model relates to a kind of non-pressure tunnel access path arrangement and structure types, more particularly to one kind to break with larger
Combination, the non-pressure tunnel access path with blow vent are faced in surface construction branch hole forever.
Background technique
Non-pressure tunnel be usually used in diversion irrigation, urban water supply, navigation, excessively wood and water channeling type hydraulic and hydroelectric engineering in.Low water
Head disappears and falls the small water delivery situation of depth, generally uses non-pressure tunnel.Water level frequent fluctuation during non-pressure tunnel is run, gas in hole
Body contraction or expansion therewith, to guarantee the safety of non-pressure tunnel structure and the needs of non-pressure tunnel operation, the non-pressure tunnel water surface with
On need to have good aeration condition.Non-pressure tunnel flow rate of water flow is typically small, and dirt is easy to deposit in hole, and especially conveying contains mud
When husky water flow, after non-pressure tunnel generates siltation, water delivery section is reduced, and is had an adverse effect to aeration condition and operation, because
This divulges information and more protrudes the problems such as maintenance in the non-pressure tunnel of long range.
Utility model content
With strong applicability, structure that technical problem to be solved by the utility model is to provide one kind is arranged economical and practical
Non-pressure tunnel access path with blow vent.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is: it is a kind of with blow vent without pressure tunnel
Hole access path sets gradually access path section, blow vent section, blow vent section and non-pressure tunnel section phase in working tunnel end
It hands over, access path section uses square shape bearing structure, and hollow bearing structure top, which is provided with channel, makes working tunnel and ventilation
It is communicated between mouth section, is provided with air grid steel mesh on a passage.
The non-pressure tunnel section includes non-pressure tunnel non-standard segment and non-pressure tunnel standard paragraphs, non-pressure tunnel non-standard segment with
Straight hole section of the blow vent section intersection using half gateway opening, half rectangular cross section, the straight hole Duan Yuwu pressure of half gateway opening, half rectangular cross section
Tunnel standard paragraphs are connected using half of formula transition.
The acute angle that the straight hole section intersects vertically or intersects with blow vent section is not less than 65 degree.
Straight hole the section floor elevation, blow vent section floor elevation, access path section floor elevation are ladder-like gradually to rise
High.
The profile height of the working tunnel is higher than the profile height of non-pressure tunnel, and straight hole section combines place with blow vent section
Dark deep beam is set.
The channel is arch cavity, and air grid steel mesh surrounding build-in is in the concrete in channel.
The beneficial effects of the utility model are: the requirement for meeting the ventilation of long range non-pressure tunnel and being overhauled into hole；With apply
Combination is faced in work branch hole forever, and structure arrangement is economical and practical；Improve the degree of safety and service efficiency of non-pressure tunnel operation.
Detailed description of the invention
Fig. 1 is the floor map of non-pressure tunnel access path of the utility model with blow vent；
Fig. 2 is A-A sectional view in Fig. 1；
Fig. 3 is B-B sectional view in Fig. 1；
Fig. 4 is C-C sectional view in Fig. 1；
Fig. 5 is the perspective view of the utility model；
In figure: 1--- non-pressure tunnel non-standard segment；2--- access path section；3--- blow vent section；4--- working tunnel；
The straight hole section of 5---；6--- non-pressure tunnel standard paragraphs；7--- air grid steel mesh；The dark deep beam of 8---；9--- blow vent section bottom plate；
10--- access path section bottom plate；Direction shown in arrow is non-pressure tunnel water (flow) direction；Water level symbol indicates that non-pressure tunnel designs water
Position.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
As shown in Fig. 1~5, the non-pressure tunnel access path with blow vent of the utility model, which is characterized in that constructing
4 end of branch hole sets gradually access path section 2, blow vent section 3, and blow vent section 3 intersects with non-pressure tunnel section, access path section 2
Using square shape bearing structure, hollow bearing structure top, which is provided with channel, makes phase between working tunnel 4 and blow vent section 3
It is logical, it is provided with air grid steel mesh 7 on a passage.
The non-pressure tunnel section includes non-pressure tunnel non-standard segment 1 and non-pressure tunnel standard paragraphs 6, non-pressure tunnel non-standard segment
1 uses the straight hole section 5 of half gateway opening, half rectangular cross section, the straight hole section 5 of half gateway opening, half rectangular cross section with 3 intersection of blow vent section
Connected with non-pressure tunnel standard paragraphs 6 using half of formula transition.
The acute angle that the straight hole section 5 intersects vertically or intersects with blow vent section 3 is not less than 65 degree.
Straight hole section 5 floor elevations, 9 elevation of blow vent section bottom plate, 10 elevation of access path section bottom plate, be it is ladder-like by
It is gradually raised.
The profile height of the working tunnel 4 is higher than the profile height of non-pressure tunnel, straight hole section 5 and 3 phase knot of blow vent section
Dark deep beam 8 is set at conjunction.
The channel is arch cavity, and 7 surrounding build-in of air grid steel mesh is in the concrete in channel.
The utility model non-pressure tunnel non-standard segment and working tunnel intersect vertically or wide-angle oblique, and intersection uses
The straight hole section of half gateway opening, half rectangular cross section, and required according to traffic in side wall hole-opening, non-pressure tunnel non-standard segment and no pressure
Tunnel standard paragraphs are connected using the transition that one side of something side becomes gateway opening；Access path section is wanted according to the arrangement and stress of maintenance door
It asks, does certain thickness structural concrete in the upper and lower, left and right of door respectively, form square shape bearing structure；Blow vent section
Between working tunnel end, access path section and non-pressure tunnel non-standard segment, the well formula that blow vent section uses top open is logical
Depressed structure had not only met the requirement of non-pressure tunnel charge, exhaust, but also can avoid non-pressure tunnel water flow and overflow.
The requirement that the utility model meets the ventilation of long range non-pressure tunnel and overhauls into hole；Face knot forever with working tunnel
It closes, structure arrangement is economical and practical；Improve the degree of safety and service efficiency of non-pressure tunnel operation.
It is described in detail combined with specific embodiments below:
Certain large-scale diversion pump station engineering, about 5km between the upstream and downstream hole of drain cavern, conveying water flow containing silt in hole is
Main and SEA LEVEL VARIATION is frequent.The working tunnel of drain cavern leads to the 1# access tunnel of underground pump station.Working tunnel connects with drain cavern
Place, floor elevation is close, and profile height is larger.Drain cavern arranges the band blow vent of the utility model in its working tunnel end
Non-pressure tunnel access path structure.Drain cavern and blow vent section intersection are the straight hole section of half gateway opening, half rectangular cross section, directly
Hole section is 86.44 ° with acute angle folded by blow vent section, and straight hole section section dead size is 2.8mx3.5m, lining thickness 0.4m, bottom plate
Elevation 825.434m, water level elevation 827.864m, length 10m.Working tunnel is gateway opening type section, section dead size
4.5mx5.07m.Blow vent segment length 2.5m, floor elevation 825.890m；Access path segment length 2m, floor elevation 826.046m.It is logical
Port section cross section dead size is 2.5mx2.8m.Arch cavity lays steel mesh together between access path section and working tunnel
8 array pitch 150mm of Ф, surrounding build-in is in concrete.Straight hole section and the blow vent section of half gateway opening of drain cavern, half rectangular cross section
Place is combined, dark deep beam, section 0.4mx1.0m, to reinforce hole portion structure bearing capacity are set.
Embodiment described above is merely to illustrate the technical idea and feature of the utility model, and its object is to make ability
Technical staff in domain, cannot be only practical to limit with the present embodiment it will be appreciated that the content of the utility model and implement accordingly
Novel the scope of the patents, i.e., same changes or modifications made by the revealed spirit of all the utility model, it is practical new still to fall in this
In the scope of the patents of type.
Claims (6)
1. a kind of non-pressure tunnel access path with blow vent, which is characterized in that set gradually maintenance in working tunnel (4) end
Channel section (2), blow vent section (3), blow vent section (3) intersect with non-pressure tunnel section, and access path section (2) is carried using square shape
Structure, hollow bearing structure top, which is provided with channel, to be made to communicate between working tunnel (4) and blow vent section (3), on a passage
It is provided with air grid steel mesh (7).
2. the non-pressure tunnel access path with blow vent according to claim 1, which is characterized in that the non-pressure tunnel section packet
Non-pressure tunnel non-standard segment (1) and non-pressure tunnel standard paragraphs (6) are included, non-pressure tunnel non-standard segment (1) intersects with blow vent section (3)
Straight hole section (5) of the place using half gateway opening, half rectangular cross section, the straight hole section (5) and non-pressure tunnel mark of half gateway opening, half rectangular cross section
Quasi- section (6) is connected using half of formula transition.
3. the non-pressure tunnel access path with blow vent according to claim 2, which is characterized in that the straight hole section (5) with
The acute angle that blow vent section (3) intersects vertically or intersects is not less than 65 degree.
4. the non-pressure tunnel access path with blow vent according to claim 2, which is characterized in that described straight hole section (5) bottom
Plate elevation, blow vent section bottom plate (9) elevation, access path section bottom plate (10) elevation, it is ladder-like to gradually rise.
5. the non-pressure tunnel access path with blow vent according to claim 2, which is characterized in that the working tunnel (4)
Profile height be higher than the profile height of non-pressure tunnel, straight hole section (5) is the same as the dark deep beam (8) of blow vent section (3) place of combining setting.
6. the non-pressure tunnel access path with blow vent according to claim 2, which is characterized in that the channel is that arch is empty
Chamber, air grid steel mesh (7) surrounding build-in is in the concrete in channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821189639.9U CN208733572U (en) | 2018-07-25 | 2018-07-25 | A kind of non-pressure tunnel access path with blow vent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821189639.9U CN208733572U (en) | 2018-07-25 | 2018-07-25 | A kind of non-pressure tunnel access path with blow vent |
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| Publication Number | Publication Date |
|---|---|
| CN208733572U true CN208733572U (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821189639.9U Active CN208733572U (en) | 2018-07-25 | 2018-07-25 | A kind of non-pressure tunnel access path with blow vent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951552A (en) * | 2018-07-25 | 2018-12-07 | 中国电建集团北京勘测设计研究院有限公司 | A kind of non-pressure tunnel access path with blow vent |
-
2018
- 2018-07-25 CN CN201821189639.9U patent/CN208733572U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951552A (en) * | 2018-07-25 | 2018-12-07 | 中国电建集团北京勘测设计研究院有限公司 | A kind of non-pressure tunnel access path with blow vent |
| CN108951552B (en) * | 2018-07-25 | 2023-10-20 | 中国电建集团北京勘测设计研究院有限公司 | Pressureless tunnel overhauling channel with air vents |
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