CN102505671A - Overhead maintenance passage for diversion tunnels - Google Patents
Overhead maintenance passage for diversion tunnels Download PDFInfo
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- CN102505671A CN102505671A CN2011103691991A CN201110369199A CN102505671A CN 102505671 A CN102505671 A CN 102505671A CN 2011103691991 A CN2011103691991 A CN 2011103691991A CN 201110369199 A CN201110369199 A CN 201110369199A CN 102505671 A CN102505671 A CN 102505671A
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- maintenance
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- adit
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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 invention discloses an overhead maintenance passage for a plurality of diversion tunnels, which can reduce the construction cost. The maintenance passage comprises an un-blocked construction tunnel forming an external maintenance adit, and further comprises an upper maintenance branch adit, wherein the upper maintenance branch is higher than the external maintenance adit, communicated with the external maintenance adit through an external maintenance well, and communicated with the diversion tunnels through internal maintenance wells. The maintenance passage can drain ponded water without the need of a dedicated drain hole, which greatly reduces the construction cost; as the number of maintenance blocking doors is greatly reduced, the construction cost is greatly reduced, the construction difficulty is reduced, and the maintenance operation is more convenient; moreover, when one of the diversion tunnels is maintained, the normal operation of the other diversion tunnels cannot be impacted. Therefore, the overhead maintenance passage is suitable to be popularized and applied in the field of diversion power generation systems.
Description
Technical field
The present invention relates to diversion and power system field, especially a kind of last straddle type access path that is used for many diversion tunnels.
Background technology
In Hydraulic and Hydro-Power Engineering,, adopt many diversion tunnels that are arranged in parallel to carry out diversion usually in order to increase water diversion; Diversion tunnel is after operation a period of time, and one will overhaul diversion tunnel, guarantees the normal use of diversion tunnel; When maintenance; The maintainer enters in the diversion tunnel from access path diversion tunnel is overhauled, and at present, the access path that is used for many diversion tunnels adopts following two kinds of arrangements usually:
First kind of mode directly is utilized in the construction tunnel that excavation forms during diversion tunnel, at the connecting portion of construction tunnel and diversion tunnel the shutoff access door is set diversion tunnel is sealed; Though this arrangement does not need the extra maintenance hole that is provided with, the quantity of required shutoff access door is more, all the shutoff access door need be set every diversion tunnel both sides; And the design of shutoff access door, to make difficulty of construction big, and cost is higher, and when the inboard diversion tunnel of maintenance backer; The diversion tunnel that needs the emptying backer outside, and open the shutoff access door in the backer outside, maintenance is very inconvenient; In addition, in the diversion tunnel running, because seepage tunnel Nei Shui exosmoses or underground water; Cause construction tunnel ponding, the ponding in the construction tunnel between two diversion tunnels can't be discharged, when opening the shutoff access door; Ponding in the construction tunnel between two diversion tunnels is gushed out, and causes very big inconvenience to upkeep operation.
The second way is provided with a maintenance hole below diversion tunnel, a maintenance hole is communicated with diversion tunnel through internal overhaul vertical shaft or inclined shaft; And at the connecting portion of internal overhaul inclined shaft or vertical shaft and diversion tunnel the shutoff access door is set diversion tunnel is sealed; On a maintenance hole, also be connected with the drainage tunnel that is in communication with the outside, though this arrangement has reduced the quantity of shutoff access door, because a maintenance hole is in the diversion tunnel below; In the diversion tunnel running; Because seepage tunnel Nei Shui exosmoses or underground water, can cause ponding in the maintenance hole, need set up drainage tunnel; And the construction cost of drainage tunnel is higher, makes that the construction cost of whole access path is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of last straddle type access path that is used for many diversion tunnels that can reduce construction cost.
The technical solution adopted for the present invention to solve the technical problems is: this is used for the last straddle type access path of many diversion tunnels; The construction tunnel that forms when comprising the excavation diversion tunnel; Will be in the construction tunnel shutoff between two diversion tunnels, the construction tunnel of shutoff does not form outside maintenance adit, also comprises a maintenance hole, top; The position at a top maintenance place, hole is higher than the position at outside maintenance adit place; A maintenance hole, top is communicated with outside maintenance adit through outside inspection-pit, and a maintenance hole, top is communicated with diversion tunnel through the internal overhaul well, and externally the maintenance of the outside between inspection-pit and diversion tunnel adit is provided with plugging structure
Further be outside maintenance closure gate externally to be set on the maintenance of the outside between inspection-pit and the diversion tunnel adit to form described plugging structure.
Further be that the bottom in a maintenance hole, said top is higher than the highest operating water level of diversion tunnel.
Further be when the bottom in a top maintenance hole is lower than the highest operating water level of diversion tunnel, in the said internal overhaul well internal overhaul closure gate to be installed.
Further be that said internal overhaul closure gate is arranged on the connecting portion in an internal overhaul well and a maintenance hole, top.
Further be, a maintenance hole, said top is obliquely installed, and the end position that a maintenance hole, top links to each other with outside inspection-pit is lower than the position at a maintenance other end place, hole.
Further be, the bottom of said internal overhaul well is provided with the internal overhaul adit, and the internal overhaul well is communicated with diversion tunnel through the internal overhaul adit.
The invention has the beneficial effects as follows: the position at the top maintenance of this an access path place, hole is higher than the position at outside maintenance adit place, and a maintenance hole, top is communicated with outside maintenance adit, and outside maintenance adit is formed by existing construction tunnel; Ponding in the maintenance hole, top can overhaul adit and flow to the external world automatically along the outside, therefore, do not need to be provided with specially the purpose that drainage tunnel just can reach row's ponding; Can reduce the saving construction cost greatly; And, when the maintainer overhauls a certain diversion tunnel, need not other seepage tunnel of emptying; The seepage tunnel that can directly overhaul needs overhauls, and makes things convenient for upkeep operation.By the plugging structure that outside maintenance closure gate forms, when maintenance is overhauled the diversion tunnel of closure gate near the outside, can directly open outside maintenance closure gate, diversion tunnel is overhauled, convenient and swift.When the bottom in a top maintenance hole is higher than the highest operating water level of diversion tunnel; A maintenance hole, top directly is communicated with diversion tunnel through the internal overhaul well; The shutoff access door need be set; The quantity of maintenance closure gate significantly reduces, and has reduced construction cost greatly, and has reduced the difficulty of construction.When the bottom in a top maintenance hole is lower than the highest operating water level of diversion tunnel, the internal overhaul closure gate is installed in the internal overhaul well, be in order to prevent that the water in the diversion tunnel from emerging along the internal overhaul well, to flood a maintenance hole.The internal overhaul closure gate is arranged on the connecting portion in an internal overhaul well and top maintenance hole, is in the internal overhaul well, to generate ponding in order to prevent, the easy access personnel carry out upkeep operation.A maintenance hole, top is obliquely installed, is convenient to the ponding in the maintenance hole, top is flowed out.In the bottom of internal overhaul well the internal overhaul adit is set, easy access personnel's upkeep operation.
Description of drawings
Fig. 1 is the structural representation that the present invention is used for the last straddle type access path of many diversion tunnels;
Description of symbols among the figure: diversion tunnel 1, outside maintenance adit 2, a maintenance hole 3, top, outside inspection-pit 4, outside maintenance closure gate 5, internal overhaul well 6, internal overhaul closure gate 7, internal overhaul adit 8.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
As shown in Figure 1; The last straddle type access path that this is used for many diversion tunnels, the construction tunnel that forms when comprising excavation diversion tunnel 1 will be in the construction tunnel shutoff between two diversion tunnels 1; The construction tunnel of shutoff does not form outside maintenance adit 2; Also comprise a maintenance hole 3, top, the position at 3 places, a maintenance hole, top is higher than the position at outside maintenance adit 2 places, and a maintenance hole 3, top is communicated with outside maintenance adit 2 through outside inspection-pit 4; A maintenance hole 3, top is communicated with diversion tunnel 1 through internal overhaul well 6, and externally the maintenance of the outside between inspection-pit 4 and the diversion tunnel 1 adit 2 is provided with plugging structure.In the process of diversion tunnel 1 operation, because the position that the position at 3 places, hole is higher than outside maintenance adit 2 places is propped up in the top maintenance, and owing to a maintenance hole 3, top is communicated with outside maintenance adit 2; And outside maintenance adit 2 is formed by existing construction tunnel, and the ponding in the maintenance hole, top 3 can overhaul adit 2 along the outside and flow to the external world automatically, therefore; Do not need the purpose that drainage tunnel just can reach row's ponding is set specially, can reduce the saving construction cost greatly, and; When the maintainer need overhaul a certain diversion tunnel 1; Need not other seepage tunnel 1 of emptying, the water emptying in the diversion tunnel 1 that only needs overhaul is after the maintainer overhauls adit 2 entering from the outside; Enter in the maintenance hole 3, top along outside inspection-pit 4; Diversion tunnel 1 top that maintenance hole 3 arrival need be overhauled along top then can arrive in the diversion tunnel 1 that needs maintenance along internal overhaul well 6, and then diversion tunnel 1 is overhauled; Can directly enter in the seepage tunnel 1 that needs maintenance and carry out upkeep operation, make upkeep operation convenient and swift from the external world.Said outside inspection-pit 4, internal overhaul well 6 can be that vertical shaft also can be an inclined shaft.When the bottom in a top maintenance hole 3 is higher than the highest operating water level of diversion tunnel 1; A maintenance hole 3, top directly is communicated with diversion tunnel 1 through internal overhaul well 6; The maintenance closure gate need be set; The quantity of maintenance closure gate significantly reduces, and has reduced construction cost greatly, and has reduced the difficulty of construction.When the bottom in a top maintenance hole 3 is lower than the highest operating water level of diversion tunnel 1, emerge along internal overhaul well 6 in order to prevent the water in the diversion tunnel 1, flood access path, internal overhaul closure gate 7 has been installed in internal overhaul well 6.Internal overhaul closure gate 7 can be arranged on the optional position in the internal overhaul well 6; Usually for fear of in internal overhaul well 6, generating ponding; The easy access personnel carry out upkeep operation, and said internal overhaul closure gate 7 is arranged on internal overhaul well 6 and props up the connecting portion in hole 3 with the top maintenance.Said plugging structure can have numerous embodiments; For example; Can adopt concrete directly this part passage to be shut; The form that also can adopt plug with this part passage plugging as preferred mode is: outside maintenance closure gate 5 externally is set on the maintenance of the outside between inspection-pit 4 and the diversion tunnel 1 adit 2 forms described plugging structure.
In addition; For the ease of the ponding in the maintenance hole, top is flowed out and flows to end; Usually a maintenance hole 3, said top is obliquely installed, the position at the end place that a maintenance hole 3, top links to each other with outside inspection-pit 4 is lower than the position at top maintenance 3 other ends place, hole.Moreover; Upkeep operation for the ease of the maintainer; The bottom of said internal overhaul well 6 is provided with internal overhaul adit 8; Internal overhaul well 6 is communicated with diversion tunnel 1 through internal overhaul adit 8, and internal overhaul adit 8 can utilize the transformation of original construction tunnel to form, and can further reduce construction cost.
Claims (7)
1. the last straddle type access path that is used for many diversion tunnels; The construction tunnel that forms when comprising excavation diversion tunnel (1); It is characterized in that: will be positioned at the construction tunnel shutoff between two diversion tunnels (1); The construction tunnel of shutoff does not form outside maintenance adit (2); Also comprise a maintenance hole (3), top, the position at a top maintenance place, hole (3) is higher than the position at outside maintenance adit (2) place, and a maintenance hole (3), top is communicated with outside maintenance adit (2) through outside inspection-pit (4); A maintenance hole (3), top is communicated with diversion tunnel (1) through internal overhaul well (6), and externally the maintenance adit of the outside between inspection-pit (4) and the diversion tunnel (1) (2) is provided with plugging structure.
2. the last straddle type access path that is used for many diversion tunnels as claimed in claim 1 is characterized in that: outside maintenance closure gate (5) externally is set on the maintenance adit of the outside between inspection-pit (4) and the diversion tunnel (1) (2) forms described plugging structure.
3. the last straddle type access path that is used for many diversion tunnels as claimed in claim 2 is characterized in that: the bottom in a maintenance hole (3), said top is higher than the highest operating water level of diversion tunnel (1).
4. the last straddle type access path that is used for many diversion tunnels as claimed in claim 2; It is characterized in that: when the bottom in a top maintenance hole (3) is lower than the highest operating water level of diversion tunnel (1), internal overhaul closure gate (7) is installed in the said internal overhaul well (6).
5. the last straddle type access path that is used for many diversion tunnels as claimed in claim 4 is characterized in that: said internal overhaul closure gate (7) is arranged on internal overhaul well (6) and props up the connecting portion in hole (3) with the top maintenance.
6. according to the described last straddle type access path that is used for many diversion tunnels of any claim in the claim 1 to 5; It is characterized in that: a maintenance hole (3), said top is obliquely installed, and the position at the end place that a maintenance hole (3), top links to each other with outside inspection-pit (4) is lower than the position at a top maintenance other end place, hole (3).
7. the last straddle type access path that is used for many diversion tunnels as claimed in claim 6; It is characterized in that: the bottom of said internal overhaul well (6) is provided with internal overhaul adit (8), and internal overhaul well (6) is communicated with diversion tunnel (1) through internal overhaul adit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103691991A CN102505671B (en) | 2011-11-18 | 2011-11-18 | Overhead maintenance passage for diversion tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103691991A CN102505671B (en) | 2011-11-18 | 2011-11-18 | Overhead maintenance passage for diversion tunnels |
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| Publication Number | Publication Date |
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| CN102505671A true CN102505671A (en) | 2012-06-20 |
| CN102505671B CN102505671B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103691991A Active CN102505671B (en) | 2011-11-18 | 2011-11-18 | Overhead maintenance passage for diversion tunnels |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498456A (en) * | 2013-10-17 | 2014-01-08 | 中水东北勘测设计研究有限责任公司 | Staggered distribution method for two or plurality of side-by-side tunnel inclined shafts or vertical shafts |
| CN104018474A (en) * | 2014-06-23 | 2014-09-03 | 黄河勘测规划设计有限公司 | Method for reconstructing construction adit into maintenance adit by virtue of back-filling |
| CN105240041A (en) * | 2015-11-17 | 2016-01-13 | 中国长江三峡集团公司 | Ventilating smoke dissipating system used for underground cavern construction of large hydropower station |
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| SU647398A1 (en) * | 1977-04-19 | 1979-02-15 | Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им. С.Я.Жука | High-head spillway |
| SU988968A1 (en) * | 1980-01-31 | 1983-01-15 | За витель | Water supply path of hydraulic power station |
| JPH06108448A (en) * | 1992-09-28 | 1994-04-19 | Taisei Corp | Repairing method for tunnel |
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| CN201874614U (en) * | 2010-11-15 | 2011-06-22 | 中国水电顾问集团华东勘测设计研究院 | Drainage structure for emptying overhaul of derivation tunnel |
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2011
- 2011-11-18 CN CN2011103691991A patent/CN102505671B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU636323A1 (en) * | 1975-01-17 | 1978-12-05 | Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им. С.Я. Жука | High-head weir inlet |
| SU647398A1 (en) * | 1977-04-19 | 1979-02-15 | Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им. С.Я.Жука | High-head spillway |
| SU988968A1 (en) * | 1980-01-31 | 1983-01-15 | За витель | Water supply path of hydraulic power station |
| JPH06108448A (en) * | 1992-09-28 | 1994-04-19 | Taisei Corp | Repairing method for tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498456A (en) * | 2013-10-17 | 2014-01-08 | 中水东北勘测设计研究有限责任公司 | Staggered distribution method for two or plurality of side-by-side tunnel inclined shafts or vertical shafts |
| CN104018474A (en) * | 2014-06-23 | 2014-09-03 | 黄河勘测规划设计有限公司 | Method for reconstructing construction adit into maintenance adit by virtue of back-filling |
| CN104018474B (en) * | 2014-06-23 | 2016-01-20 | 黄河勘测规划设计有限公司 | The method in a working tunnel backfill reconstruction maintenance hole |
| CN105240041A (en) * | 2015-11-17 | 2016-01-13 | 中国长江三峡集团公司 | Ventilating smoke dissipating system used for underground cavern construction of large hydropower station |
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| Publication number | Publication date |
|---|---|
| CN102505671B (en) | 2013-11-20 |
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Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee after: Co., Ltd of Chengdu survey and design academy of electricity Jian group of China Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee before: Chengdu Hydroelectric Investigation & Design Institute of SPC |