CN1080355C - Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof - Google Patents
Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof Download PDFInfo
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- CN1080355C CN1080355C CN 96115568 CN96115568A CN1080355C CN 1080355 C CN1080355 C CN 1080355C CN 96115568 CN96115568 CN 96115568 CN 96115568 A CN96115568 A CN 96115568A CN 1080355 C CN1080355 C CN 1080355C
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Abstract
The present invention relates to the technical field of submarine tunnels, particularly to a prefabricated component for segmented prefabricated negative pressure sealing type submarine tunnels and a submarine tunnel construction method. The prefabricated component form a cylindrical shape, the cross section forms a flat bottom circular arch shape, the outer edge of a flat bottom is larger than a diameter of an arch shape, and connecting rings are arranged on both ends of the prefabricated component. The construction method is that smoothing is carried out to seafloors where tunnels are to be laid, prefabricated tunnel laying can be carried out after smoothing is finished, and a sealing ring is arranged before laying is carried out. After a first segment is installed stably, other segments are installed successively, and then external burying, internal pumping and internal construction are carried out. The present invention has the characteristic of fast construction speed on submarine tunnel laying, and funds used for excavation can be saved greatly.
Description
The present invention relates to the seabed tunnel technical field, the job practices of the prefabricated negative pressure sealing submarine tunnel prefabricated and seabed tunnel of particularly a kind of merogenesis.
On October 26th, 1, the Chinese Central Television (CCTV) " global 45 ' " playing programs one section about " English Channel seabed tunnel " picture recording television report.Wherein described with large-scale modernized road heading machinery, got through the continental shelf, seabed, formed the situation of seabed tunnel.Report that this engineering expends fund 14,000,000,000 pounds, is the first in the world.So big expensive infrastructure construction that restricts developing country.
In addition, U.S. Pat 3729989 disclosed an invention about " merogenesis is prefabricated sealing submarine tunnel prefabricated " on May 1st, 1973.Sealing in this invention is to lean on the form of seal trim strip to realize, is difficult to the imagination and under the different depth of water and pressure, how sets its thickness, and its aging and integrity problem.
Purpose one of the present invention is: provide a kind of merogenesis prefabricated negative pressure sealing submarine tunnel prefabricated, sealing between its two prefabricated component forms on sealing ring naturally by suction function, with the adaptation of realization, and solve wearing out and integrity problem of sealing ring to the different depth of waters and pressure.
Purpose two of the present invention is: a kind of job practices of seabed tunnel is provided, earlier the tunnel prefabricated component is settled down to smooth good seabed in advance, the job practices of the prefabricated negative pressure sealing submarine tunnel of merogenesis of the inner seawater of back emptying.Finish the seabed tunnel engineering of equal scale with the 3-5% of English Channel engineering cost.
Technical scheme of the present invention is achieved in that
A kind of merogenesis is prefabricated negative pressure sealing submarine tunnel prefabricated, it is characterized in that prefabricated units are a kind of tubular articles, its cross section is the circular arch type of a band flat bed, its base outer is greater than the arch form diameter, the prefabricated component two ends are provided with pre-buried for connecting and the connecting ring of lifting usefulness, lay respectively at inside and outside the inside and outside and both sides root in the top of member.The thickness of prefabricated component can be determined according to the depth of water of construction area, but base thickness is greater than the arch form top thickness, and the length of prefabricated component determines that according to constructor's lifting ability obviously prefabricated component is long more, and sealing ring quantity is few more, and speed of application is fast more.Concavo-convex chase mortise is left at the two ends of prefabricated component respectively, and mutual eye-splice during for connection on the interior edge of recessed end, leaves a circle and is outer radial 30 ° of angles.Sealing ring is a kind of soft ring that has 30 ° of slopes, and the protruding place external diameter of its internal diameter and prefabricated component nose is made tight interference fits, and it has the outer on 30 ° of slopes and 30 ° of angles of the recessed end of another joint prefabricated component closely cooperate.The width that the protruding place external diameter of sealing ring and prefabricated component nose is made the inner plane of tight interference fits needs the length less than prefabricated component nose projection, and projection still leaves one section platform after putting sealing ring, and back gravity can not be pressed on the sealing ring to guarantee to peg graft.
The job practices of the prefabricated negative pressure sealing submarine tunnel of a kind of merogenesis, it is characterized in that, carry out the seabed that overlays the tunnel smooth, mainly be backfill and remove obstacles, recess can be filled and led up with Da Shi, and means such as the available explosion in protruding place are rooted out, form roughly smooth after, with one deck basis, Da Shi shop, pave with rubble more earlier.The seabed is smooth can carry out the laying in prefabricated tunnel after finishing, at first with first segment tunnel sinking in the middle part of whole length of tunnel, so that two construction directions are arranged.Sealing ring should install before sinking, after the first segment sinking is steady, begins to adorn second joint, the 3rd joint again, when two joint tunnels join, should guarantee not damage the interface position in tunnel, can not accompany any foreign material between two joints, at last the tunnel connecting bolt is tightened;
After all the tunnel prefabricated component installs, arrange along both sides, tunnel heap with Da Shi earlier, need to keep certain parallel distance with the tunnel, when it extremely flushes with the tunnel height apart from the height heap with clitter, the root that the tunnel is just pushed down at the base angle of clitter is as the criterion, with sand the tunnel is buried again, at ocean current than the strength processing of should driving piles;
After landfill is finished, carry out internal drainage.At this moment be full of seawater in the tunnel, its external and internal pressure unanimity with the extraction of tunnel internal seawater, can make and produce negative pressure in the tunnel, to inwardly being pressed, moves by sealing ring, thus the sealing of realization prefabricated component interface.Cause negative pressure that two conditions are arranged; 1. sealing ring just tentatively compresses when the tunnel connection, infiltrates the water yield when avoiding drawing water to can not form negative pressure greater than extracting the water yield out; 2. drainability need be tried one's best greatly, to guarantee the generation as early as possible of negative pressure;
After finishing, draining can carry out the interior construction in tunnel.
Characteristics of the present invention are excavation tunnels of becoming traditional in the submarine laying tunnel, thereby not only make the speed of application quickening, have also saved the fund that be used to excavate of conventional tunnel engineering more than 95% that account for.
Fig. 1 is the prefabricated negative pressure sealing submarine tunnel structural representation of merogenesis.
Fig. 2 is a seabed tunnel steel reinforced concrete prefabricated component front view.
Fig. 3 is a seabed tunnel steel reinforced concrete prefabricated component rear elevation.
Fig. 4 is a seabed tunnel steel reinforced concrete prefabricated component interface sectional drawing.
Fig. 5 is a seabed tunnel steel reinforced concrete prefabricated component lateral view.
Fig. 6 is the seabed tunnel sealing ring.
Fig. 7 is a seabed tunnel sealing ring sectional drawing.
(seeing Fig. 1,2,3,4,5) prefabricated units 1 are a kind of tubular articles, its cross section 2 is the circular arch type of a band flat bed, the outer 4 of its base 3 is greater than the arch form diameter, the prefabricated component two ends are provided with pre-buried for connecting and the connecting ring 5 of lifting usefulness, lay respectively at inside and outside the inside and outside and both sides root in the top of member.The thickness of prefabricated component can be determined according to the depth of water of construction area, but base thickness is greater than the arch form top thickness, and the length of prefabricated component determines that according to constructor's lifting ability obviously prefabricated component is long more, and sealing ring 7 quantity are few more, and speed of application is fast more.Concavo-convex chase mortise is left at the two ends of prefabricated component respectively, and mutual eye-splice during for connection on the interior edge of recessed end 13, leaves a circle and is outer radial 30 ° of angles 6.(seeing Fig. 6,7) sealing ring 7 is soft rings that a kind of outer has 30 ° of slopes, its internal diameter 8 is made tight interference fits with the protruding place external diameter 10 of prefabricated component nose 11, and its outer 9 that has 30 ° of slopes closely cooperates with 30 ° of angles 6 that another saves the recessed end 13 of prefabricated component.The width that sealing ring 7 and the protruding place external diameter 10 of prefabricated component nose 11 are made the inner plane 8 of tight interference fits needs the length less than the projection of prefabricated component nose 11, projection still leaves one section platform 12 after putting sealing ring, can not be pressed on the sealing ring to guarantee grafting back gravity.The seabed that overlays the tunnel is carried out smooth, mainly be backfill and remove obstacles that recess can be filled and led up with Da Shi, means such as the available explosion in protruding place are rooted out, form roughly smooth after, with one deck basis, Da Shi shop, pave with rubble more earlier.The seabed is smooth can carry out the laying in prefabricated tunnel after finishing, at first with first segment tunnel sinking in the middle part of whole length of tunnel, so that two construction directions are arranged.Sealing ring should install before sinking, after the first segment sinking is steady, begins to adorn second joint, the 3rd joint again, when two joint tunnels join, should guarantee not damage the interface position in tunnel, can not accompany any foreign material between two joints, at last the tunnel connecting bolt is tightened.
After all the tunnel prefabricated component installs, arrange along both sides, tunnel heap with Da Shi earlier, need to keep certain parallel distance with the tunnel, when it extremely flushes with the tunnel height apart from the height heap with clitter, the root that the tunnel is just pushed down at the base angle of clitter is as the criterion, with sand the tunnel is buried, the purpose 1. of this procedure makes the tunnel firm again; 2. tunnel and seawater are separated.In addition at ocean current than the strength processing of should driving piles.
After landfill is finished, carry out internal drainage.At this moment be full of seawater in the tunnel, its external and internal pressure unanimity with the extraction of tunnel internal seawater, can make and produce negative pressure in the tunnel, to inwardly being pressed, moves by sealing ring, thus the sealing of realization prefabricated component interface.Cause negative pressure that two conditions are arranged; 1. sealing ring just tentatively compresses when the tunnel connection, infiltrates the water yield when avoiding drawing water to can not form negative pressure greater than extracting the water yield out; 2. drainability need be tried one's best greatly, to guarantee the generation as early as possible of negative pressure.
After finishing, draining can carry out the interior construction in tunnel.
Claims (2)
1. a merogenesis is prefabricated negative pressure sealing submarine tunnel prefabricated, it is characterized in that prefabricated units are a kind of cross section arch form tubular articles for the band flat bed, its base outer is greater than the arch form diameter, the prefabricated component two ends are provided with pre-buried for connecting and the connecting ring of lifting usefulness, lay respectively at inside and outside the inside and outside and both sides root in the top of member; Concavo-convex chase mortise is left at the two ends of prefabricated component respectively, and mutual eye-splice during for connection on the interior edge of recessed end, leaves a circle and is outer radial 30 ° of angles; Sealing ring is the soft ring that a kind of outer has 30 ° of slopes, and the protruding place external diameter of its internal diameter and prefabricated component nose is made tight interference fits, and it has the outer on 30 ° of slopes and 30 ° of angles of the recessed end of another joint prefabricated component closely cooperate; The width that the protruding place external diameter of sealing ring and prefabricated component nose is made the inner plane of tight interference fits needs the length less than prefabricated component nose projection, and projection still leaves one section platform after putting sealing ring, and back gravity can not be pressed on the sealing ring to guarantee to peg graft.
2. the job practices of the prefabricated negative pressure sealing submarine tunnel of merogenesis, it is characterized in that the seabed that overlays the tunnel is carried out smooth, i.e. backfill and removing obstacles, recess can be filled and led up with Da Shi; Means such as the available explosion in protruding place are rooted out, form roughly smooth after,, pave with rubble more earlier with one deck basis, Da Shi shop.The seabed is smooth can carry out the laying in prefabricated tunnel after finishing, at first with first segment tunnel sinking in the middle part of whole length of tunnel, so that two construction directions are arranged; Sealing ring should install before sinking, after the first segment sinking is steady, begins to adorn second joint, the 3rd joint again, when two joint tunnels join, should guarantee not damage the interface position in tunnel, can not accompany any foreign material between two joints, at last the tunnel connecting bolt is tightened; All the tunnel prefabricated component installs, arrange along both sides, tunnel heap with Da Shi earlier, need to keep certain parallel distance with the tunnel, when it extremely flushes with the tunnel height apart from the height heap with clitter, the root that the tunnel is just pushed down at the base angle of clitter is as the criterion, with sand the tunnel is buried the purpose 1 of this procedure again). make the tunnel firm; 2). tunnel and seawater are separated, in addition at ocean current than the strength processing of should driving piles; After landfill is finished, carry out internal drainage; To inwardly being pressed, moves by sealing ring, thus the sealing of realization prefabricated component interface; Cause negative pressure that two conditions are arranged: 1). sealing ring just tentatively compresses when the tunnel connection, infiltrates the water yield when avoiding drawing water to can not form negative pressure greater than extracting the water yield out; 2). drainability need be tried one's best greatly, to guarantee the generation as early as possible of negative pressure; After finishing, draining can carry out the interior construction in tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115568 CN1080355C (en) | 1996-09-02 | 1996-09-02 | Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115568 CN1080355C (en) | 1996-09-02 | 1996-09-02 | Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof |
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| Publication Number | Publication Date |
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| CN1145437A CN1145437A (en) | 1997-03-19 |
| CN1080355C true CN1080355C (en) | 2002-03-06 |
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| CN 96115568 Expired - Fee Related CN1080355C (en) | 1996-09-02 | 1996-09-02 | Segmental prefabricating negative pressure sealing submarine tunnel prefabricated components and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381648C (en) * | 2005-01-14 | 2008-04-16 | 上海隧道工程股份有限公司 | Bagged concrete foundation structure with limit device for immersed tube tunnel |
| CN100381647C (en) * | 2005-01-14 | 2008-04-16 | 上海隧道工程股份有限公司 | Construction process of bagged concrete foundation with limit device for immersed tube tunnel |
| CN1696415B (en) * | 2004-05-12 | 2011-08-17 | 布伊古公共工程公司 | Process and apparatus for producing an immersed tunnel on subsea ground |
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| CN102720210A (en) * | 2011-03-29 | 2012-10-10 | 王晓进 | Fish-ridge-type tunnel escape compartment |
| CN102808421A (en) * | 2011-05-30 | 2012-12-05 | 马海东 | Telescopic concrete precast square culvert |
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| CN106638690A (en) * | 2016-11-19 | 2017-05-10 | 中铁隧道勘测设计院有限公司 | Simple underwater channel |
| CN107489169B (en) * | 2017-08-30 | 2023-05-09 | 中交公路规划设计院有限公司 | Water bag type pressure regulating device and pressure regulating method |
| CN109098208B (en) * | 2018-08-31 | 2024-04-26 | 郭毅轩 | Submarine tunnel and construction method thereof |
| CN109653250A (en) * | 2018-12-17 | 2019-04-19 | 彭国洪 | A kind of simple method of construction of seabed tunnel |
| CN109372542A (en) * | 2018-12-21 | 2019-02-22 | 长安大学 | A kind of novel organ type tunnel and its laying method |
| CN109537632B (en) * | 2019-01-29 | 2020-12-18 | 黄仕 | Submarine tunnel construction method |
-
1996
- 1996-09-02 CN CN 96115568 patent/CN1080355C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696415B (en) * | 2004-05-12 | 2011-08-17 | 布伊古公共工程公司 | Process and apparatus for producing an immersed tunnel on subsea ground |
| CN100381648C (en) * | 2005-01-14 | 2008-04-16 | 上海隧道工程股份有限公司 | Bagged concrete foundation structure with limit device for immersed tube tunnel |
| CN100381647C (en) * | 2005-01-14 | 2008-04-16 | 上海隧道工程股份有限公司 | Construction process of bagged concrete foundation with limit device for immersed tube tunnel |
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| CN1145437A (en) | 1997-03-19 |
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