CN107642100B - Device and method for the draining of FS final spice engagement cavity - Google Patents
Device and method for the draining of FS final spice engagement cavity Download PDFInfo
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- CN107642100B CN107642100B CN201710779855.2A CN201710779855A CN107642100B CN 107642100 B CN107642100 B CN 107642100B CN 201710779855 A CN201710779855 A CN 201710779855A CN 107642100 B CN107642100 B CN 107642100B
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Abstract
The invention discloses the devices drained for FS final spice engagement cavity, the immersed tube end seal door that FS final spice is connected is equipped with first passage and second channel, first passage is located at the lower part of end seal door, second channel is located at the top of end seal door, first passage is connected to the engagement cavity and immersed tube of end seal door two sides with second channel, air accumulator is equipped in immersed tube pipe, water tank, first pipe, second pipe and third pipeline, first pipe is connected to first passage and water tank, second pipe is connected to second channel and water tank, first pipe is equipped with the first shut-off valve, second shut-off valve and first pressure gauge, first pressure gauge and the first shut-off valve are close to end seal door, one end of first pipe connection third pipeline between first shut-off valve and the second shut-off valve, the other end of third pipeline connects air accumulator, third pipeline is equipped with third shut-off valve, on air accumulator Equipped with the first intake valve, exhaust valve, drain valve and second pressure gauge, second pipe is equipped with the second intake valve.
Description
Technical field
The present invention relates to Construction of Submarine Tunnel field, in particular to it is a kind of for FS final spice engagement cavity draining device and
Method.
Background technique
Immersed tunnelling method constructing tunnel, exactly it is partly latent refute or dry-docking in prefabricated tunnel caisson difference transportation by driving to making a reservation for
The docking of position sinking, for make the sinking of final section pipeline section smoothly must there are the metric space for being longer than the pipeline section, the remainder away from
Pipeline section from the docking of space institute's sinking is considered as FS final spice, the i.e. equal Immersed tunnel in both ends of tunnel connection, and in marine docking
Close up, the last pipeline section that closes up is FS final spice.The immersed tube tunnel final connector is the key that immersed tube tunnel construction, especially
The construction of off-lying sea overlength immersed tube tunnel, construction site operating condition is difficult, is faced with the marine environment items such as complicated wave and ocean current
Part and meteorological condition.
As shown in Figure 1, single-unit immersed tube 2 is crimped when docking with the immersed tube 2 being installed in place for waterpower, two section immersed tube 2 are opened
Begin to dock, the cyclic annular GINA waterstop 7 of 2 end face of immersed tube connection to be installed is fitted closely in the immersed tube 2 being installed in place, two sections
Engagement cavity 6 is formed between two end seal doors 5 of immersed tube 2, as part water is discharged in engagement cavity 6, acts on to be installed sink
Hydraulic pressure (as shown in figure 1 shown in lateral arrows) pushing tow of 2 other end of pipe immersed tube 2,6 space of engagement cavity reduce, engagement cavity 6 when draining
Interior pressure is gradually steadily reduced to atmospheric pressure (0.1MPa), acts on hydraulic pressure (the vertical arrow institute as shown in figure 1 of GINA waterstop 7
Show) it is steady with 6 internal pressure of engagement cavity, not will cause the rollover of GINA waterstop 7 or tearing leads to the docking failure of immersed tube 2.
As shown in Fig. 2, docking for FS final spice 1 and two section immersed tube 2 of its two sides, due to not having end hydraulic pressure, can not adopt
The mode docked with above-mentioned hydraulic pressure, FS final spice 1 are being arranged to two section immersed tube, 2 centre and after adjusting good position, and 1 liang of FS final spice
It holds respectively arranged two pushing tow girders that the GINA waterstop 7 respectively connected is driven to contact and stays on corresponding 2 end face of immersed tube,
Two engagement cavities 6 are formed between the end seal door 5 of two section immersed tube 2 of the end seal door 5 and its two sides of 1 end of FS final spice, due to losing
The effect of end hydraulic pressure has been gone, respective space invariance when the two engagement cavities 6 drain, pressure drop in engagement cavity 6 when draining, with
There are instantaneous differential pressures in the hydraulic pressure (as shown in arrow vertical in Fig. 2) of GINA waterstop 7 to produce to pushing tow girder for external action
Raw impact, causing GINA waterstop 7 to turn on one's side or tear leads to the docking failure of immersed tube 2.
Therefore, 1 two sides engagement cavity 6 of FS final spice is not available the mode of the existing docking of two sections immersed tube 2 draining in draining,
It needs to take new tool that pressure in engagement cavity 6 is made gradually steadily to be reduced to atmospheric pressure, prevents GINA waterstop 7 from turning on one's side or tearing and lead
Cause the docking failure of immersed tube 2.
Summary of the invention
It is an object of the invention to overcome the FS final spice two sides engagement cavity in the presence of the prior art can not in draining
Using the mode of existing two sections immersed tube docking draining, need to take new tool that pressure in engagement cavity is made gradually steadily to be reduced to atmosphere
It presses, prevents the above-mentioned deficiency that GINA waterstop is turned on one's side or tearing causes immersed tube docking to fail, one kind is provided and is connect for FS final spice
The device and method for closing chamber draining.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of device for the draining of FS final spice engagement cavity, the end seal door for the immersed tube being connected with FS final spice are equipped with
First passage and second channel, the first passage are located at the lower part of the end seal door, and the second channel is located at the end seal
The top of door, the first passage are used to be connected to the engagement cavity and the immersed tube of end seal door two sides with the second channel
In pipe, air accumulator, water tank, first pipe, second pipe and third pipeline are equipped in the immersed tube pipe, the first pipe is used for
It is connected to the first passage and the water tank, the second pipe is for being connected to the second channel and the water tank, and described the
One pipeline is equipped with the first shut-off valve, the second shut-off valve and first pressure gauge, the first pressure gauge and first shut-off valve
It is close to the end seal door, the first pipe between first shut-off valve and second shut-off valve connects the third
One end of pipeline, the other end of the third pipeline connect the air accumulator, and the third pipeline is equipped with third shut-off valve, institute
Air accumulator is stated equipped with the first intake valve, exhaust valve, drain valve and second pressure gauge, the second pipe is equipped with the second air inlet
Valve.
Using the device of the present invention for the draining of FS final spice engagement cavity, by adjusting each valve and setting institute
Air accumulator is stated to balance internal pressure when engagement cavity draining, the engagement cavity internal pressure is gradually reduced steadily, prevents
Only drainage speed makes the engagement cavity pressure rapid drawdown fastly, and instantaneous differential pressure is produced at the FS final spice and the immersed tube contiguity
Raw impact causes GINA waterstop to turn on one's side or tear, and the FS final spice and the immersed tube is caused to dock failure, the apparatus structure
Simply, easy to use, performance is stablized, and works well.
Preferably, connecting pipe is provided in the FS final spice, the connecting pipe is for being connected to the FS final spice
The air accumulator is arranged in the immersed tube of two engagement cavities of two sides, the FS final spice side.
Preferably, air compressor machine is additionally provided in the immersed tube pipe, first intake valve connects the air compressor machine.
Preferably, it is additionally provided with ballast pump in the immersed tube pipe, the ballast pump is connected to the first pipe.
The present invention also provides a kind of methods for the draining of FS final spice engagement cavity, using as described in any of the above item
Device for the draining of FS final spice engagement cavity, comprising the following steps:
A, original state, all valves are in off state；
B, first intake valve is opened, gas is inputted to the air accumulator with air compressor machine, surveys the first pressure gauge
The pressure value obtained is equal to the pressure value that the second pressure gauge measures, i.e., pressure is equal in the air accumulator and presses in the described engagement cavity
Power closes the air compressor machine；
C, first shut-off valve and the third shut-off valve are opened, the engagement cavity and the air accumulator are connected to；
D, the exhaust valve is opened, the aperture for controlling the exhaust valve is exhausted, and observes the first pressure gauge and institute
The variation of second pressure gauge monitor value is stated, until pressure reduction is to 0.07-0.1MPa, water enters the storage in the engagement cavity at this time
In gas tank；
E, the third shut-off valve is closed, the drain valve is opened, water in the air accumulator is discharged, is then shut off described
Exhaust valve and the drain valve；
F, second intake valve is opened, air enters the engagement cavity, while the water in the engagement cavity is by described the
Two pipelines flow into the water tank；
G, when water does not flow into the water tank from the second pipe, second shut-off valve is opened, in the engagement cavity
Remaining water flows into the water tank by the first pipe.
Using the method for the present invention for the draining of FS final spice engagement cavity, using the air accumulator and each valve
Cooperation adjustment described in engagement cavity draining when internal pressure, first steadily gradually reduce the engagement cavity with the air accumulator
Internal pressure draining, then make to be connected to atmosphere inside the engagement cavity with second pipe air inlet draining, finally with described first
The steady discharge of water in the entire engagement cavity is completed in pipe drainage, and instantaneous differential pressure impact GINA waterstop is not caused to lead to institute
FS final spice and immersed tube docking failure are stated, this method clear principle, step is simple, works well, convenient for promoting.
Preferably, before starting to execute the step A, diving confirms two ring-types of the FS final spice both ends setting
It is not mingled with foreign matter between GINA waterstop nose and the corresponding immersed tube end.
Preferably, before starting to execute the step A, the air accumulator pressurization carries out airtight test, and described in inspection
First pipe, the second pipe, the valvular air-tightness of the third pipeline and institute and watertightness.
Preferably, initial pressure and the second pressure before starting to execute the step A, to the first pressure gauge
The initial pressure of table is demarcated.
Preferably, when executing the step G, remaining water in the engagement cavity is evacuated to the water tank with ballast pump.
Preferably, after completing the step G, confirm that the watertight situation of the engagement cavity meets design requirement, using sweeping storehouse
Water remaining in the engagement cavity is discharged pump.
Preferably, water drains into the water tank in the engagement cavity, is gone out the Water in Water Tanks by immersed tube tunnel with immersible pump
The discharge of mouth end.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, with the device of the present invention for the draining of FS final spice engagement cavity, by adjusting each valve and setting
The air accumulator come balance the engagement cavity draining when internal pressure, gradually reduce the engagement cavity internal pressure steadily,
Prevent drainage speed from making the engagement cavity pressure rapid drawdown fastly, instantaneous differential pressure to the FS final spice and the immersed tube contiguity at
Impact is generated, GINA waterstop is caused to turn on one's side or tear, the FS final spice and the immersed tube is caused to dock failure, the device knot
Structure is simple, easy to use, and performance is stablized, and works well；
2, with the method for the present invention for the draining of FS final spice engagement cavity, using the air accumulator and each valve
Internal pressure when engagement cavity draining described in the cooperation adjustment of door, first steadily gradually reduces the engagement with the air accumulator
Intracavitary portion's pressure drainage, then make to be connected to atmosphere inside the engagement cavity with second pipe air inlet draining, finally with described the
The steady discharge of water in the entire engagement cavity is completed in one pipe drainage, and instantaneous differential pressure impact GINA waterstop is not caused to cause
The FS final spice and immersed tube docking failure, this method clear principle, step is simple, works well, convenient for promoting.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing two sections immersed tube waterpower crimping；
Fig. 2 is the schematic diagram that FS final spice is docked with two sides immersed tube；
Fig. 3 is the structural schematic diagram of the device of the present invention for the draining of FS final spice engagement cavity；
Fig. 4 is the flow chart of the method for the present invention for the draining of FS final spice engagement cavity.
Marked in the figure: 1- FS final spice, 2- immersed tube, 3- air accumulator, 31- intake valve, 32- exhaust valve, 33- drain valve, 34-
Second pressure gauge, 4- water tank, 41- first pipe, the first shut-off valve of 411-, the second shut-off valve of 412-, 413- third shut-off valve,
42- second pipe, the second intake valve of 421-, 43- third pipeline, 5- end seal door, 51- first passage, 52- second channel, 53-
One pressure gauge, 6- engagement cavity, 7-GINA waterstop.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
As shown in figure 3, the device of the present invention for the draining of FS final spice engagement cavity, is connected with FS final spice 1
Immersed tube 2 end seal door 5 be equipped with first passage 51 and second channel 52.
The first passage 51 is located at the lower part of the end seal door 5, and the second channel 52 is located at the upper of the end seal door 5
Portion, the first passage 51 and the second channel 52 are used to be connected to the engagement cavity 6 and the immersed tube of 5 two sides of end seal door
In 2 pipes, the immersed tube 2 manage in be equipped with air accumulator 3, water tank 4, first pipe 41, second pipe 42 and third pipeline 43, described the
One pipeline 41 is for being connected to the first passage 51 and the water tank 4, and the second pipe 42 is for being connected to the second channel
52 and the water tank 4, the first pipe 41 is equipped with the first shut-off valve 411, the second shut-off valve 412 and first pressure gauge 53,
The first pressure gauge 53 and first shut-off valve 411 are close to the end seal door 5, first shut-off valve 411 and described
The first pipe 41 between second shut-off valve 412 connects one end of the third pipeline 43, the third pipeline 43 it is another
One end connects the air accumulator 3, and the third pipeline 43 is equipped with third shut-off valve 413, the air accumulator 3 be equipped with first into
Air valve 31, exhaust valve 32, drain valve 33 and second pressure gauge 34, the second pipe 42 are equipped with the second intake valve 421.
As a preferred embodiment of the present embodiment, connecting pipe, the connecting pipe are provided in the FS final spice 1
For being connected to two engagement cavities 6 of 1 two sides of FS final spice, institute is arranged in the immersed tube 2 of 1 side of FS final spice
State air accumulator 3.
As a preferred embodiment of the present embodiment, the immersed tube 2 manage in be additionally provided with air compressor machine, first intake valve 31
Connect the air compressor machine.The immersed tube 2 is additionally provided with ballast pump in managing, and the ballast pump is connected to the first pipe 41.
With the device of the present invention for the draining of FS final spice engagement cavity, by adjusting each valve and setting institute
Air accumulator 3 is stated to balance the internal pressure when engagement cavity 6 draining, gradually reduces 6 internal pressure of engagement cavity steadily,
Prevent drainage speed from making pressure drop in the engagement cavity 6 fastly, instantaneous differential pressure is close to the FS final spice 1 and the immersed tube 2
It meets place and generates impact, GINA waterstop 7 is caused to turn on one's side or tear, the FS final spice 1 and the immersed tube 2 is caused to dock failure,
The apparatus structure is simple, easy to use, and performance is stablized, and works well.
Embodiment 2
As shown in Figure 3-4, the method for the present invention for the draining of FS final spice engagement cavity, using such as 1 institute of embodiment
The device for the draining of FS final spice engagement cavity stated, comprising the following steps:
A, original state, all valves are in off state；
B, first intake valve 31 is opened, gas is inputted to the air accumulator 3 with air compressor machine, makes the first pressure gauge
53 pressure values measured are equal to the pressure value that the second pressure gauge 34 measures, i.e., pressure is equal to the storage in the described engagement cavity 6
Pressure in gas tank 3 closes the air compressor machine；
C, first shut-off valve 411 and the third shut-off valve 413 are opened, the engagement cavity 6 and the gas storage are connected to
Tank 3；
D, the exhaust valve 32 is opened, the aperture for controlling the exhaust valve 32 is exhausted, and observes the first pressure gauge
53 and 34 monitor value of the second pressure gauge variation, until pressure reduction, to 0.07MPa, water enters in the engagement cavity 6 at this time
In the air accumulator 3；
E, the third shut-off valve 413 is closed, the drain valve 33 is opened, water in the air accumulator 3 is discharged, is then closed
Close the exhaust valve 32 and the drain valve 33；
F, second intake valve 421 is opened, air enters the engagement cavity 6, while the water in the engagement cavity 6 is by institute
It states second pipe 42 and flows into the water tank 4；
G, when water does not flow into the water tank 4 from the second pipe 42, second shut-off valve 412 is opened, it is described to connect
Remaining water flows into the water tank 4 by the first pipe 41 in conjunction chamber 6.
As a preferred embodiment of the present embodiment, before starting to execute the step A, diving confirms the FS final spice
It is not mingled with foreign matter between two 7 noses of ring-type GINA waterstop and corresponding 2 end of immersed tube of the setting of 1 both ends.The storage
Gas tank 3 is forced into 0.4MPa and carries out airtight test, and checks the first pipe 41, the second pipe 42, the third
Pipeline 43 and valvular air-tightness and watertightness.Initial pressure and the second pressure to the first pressure gauge 53
The initial pressure of table 34 is demarcated.
As a preferred embodiment of the present embodiment, when executing the step G, will be remained in the engagement cavity 6 with ballast pump
Remaining water is evacuated to the water tank 4.After completing the step G, confirms that the watertight situation of the engagement cavity 6 meets design requirement, adopt
Water remaining in the engagement cavity 6 is discharged with stripping pump.Water drains into the water tank 4 in the engagement cavity 6, with immersible pump by the water
Water is discharged by immersed tube tunnel outlet end in case 4.
With the method for the present invention for the draining of FS final spice engagement cavity, using the air accumulator 3 and each valve
Internal pressure when engagement cavity 6 described in the cooperation adjustment of door drains first steadily gradually reduces described connect with the air accumulator 3
The draining of 6 internal pressure of chamber is closed, then makes to be connected to atmosphere inside the engagement cavity 6 with 42 air inlet of second pipe draining, is finally used
The first pipe 41 drains, and completes the steady discharge of water in the entire engagement cavity 6, and instantaneous differential pressure impact GINA is not caused to stop
Water band 7 causes the FS final spice 1 and the immersed tube 2 to dock failure, and this method clear principle, step is simple, works well, just
In popularization.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of device for the draining of FS final spice engagement cavity, which is characterized in that the immersed tube being connected with FS final spice (1)
(2) end seal door (5) is equipped with first passage (51) and second channel (52), and the first passage (51) is located at the end seal door
(5) lower part, the second channel (52) are located at the top of the end seal door (5), the first passage (51) and described second
Channel (52) is used in the engagement cavity (6) and the immersed tube (2) pipe that are connected to end seal door (5) two sides, immersed tube (2) pipe
It is interior to be equipped with air accumulator (3), water tank (4), first pipe (41), second pipe (42) and third pipeline (43), the first pipe
(41) for being connected to the first passage (51) and the water tank (4), the second pipe (42) is logical for being connected to described second
Road (52) and the water tank (4), the first pipe (41) are equipped with the first shut-off valve (411), the second shut-off valve (412) and the
One pressure gauge (53), the first pressure gauge (53) and first shut-off valve (411) are close to the end seal door (5), described
The first pipe (41) between first shut-off valve (411) and second shut-off valve (412) connects the third pipeline
(43) one end, the other end of the third pipeline (43) connect the air accumulator (3), and the third pipeline (43) is equipped with the
Three shut-off valves (413), the air accumulator (3) are equipped with the first intake valve (31), exhaust valve (32), drain valve (33) and the second pressure
Power table (34), the second pipe (42) are equipped with the second intake valve (421).
2. the device according to claim 1 for the draining of FS final spice engagement cavity, which is characterized in that the FS final spice
(1) connecting pipe is provided in, the connecting pipe is used to be connected to two engagement cavities of the FS final spice (1) two sides
(6), the air accumulator (3) is arranged in the immersed tube (2) of FS final spice (1) side.
3. -2 described in any item devices for the draining of FS final spice engagement cavity according to claim 1, which is characterized in that described
Ballast pump is additionally provided in immersed tube (2) pipe, the ballast pump is connected to the first pipe (41).
4. a kind of method for the draining of FS final spice engagement cavity, using as described in any one of claims 1-3 for final
The device of connector engagement cavity draining, which comprises the following steps:
A, original state, all valves are in off state；
B, first intake valve (31) is opened, gas is inputted to the air accumulator (3) with air compressor machine, makes the first pressure gauge
(53) pressure value measured is equal to the pressure value that the second pressure gauge (34) measure, i.e., pressure is equal in the described engagement cavity (6)
Pressure in the air accumulator (3), closes the air compressor machine；
C, first shut-off valve (411) and the third shut-off valve (413) are opened, the engagement cavity (6) and the storage are connected to
Gas tank (3)；
D, the exhaust valve (32) is opened, the aperture for controlling the exhaust valve (32) is exhausted, and observes the first pressure gauge
(53) and the variation of the second pressure gauge (34) monitor value, until pressure reduction is to 0.07-0.1MPa；
E, the third shut-off valve (413) is closed, the drain valve (33) is opened, water in the air accumulator (3) is discharged, then
Close the exhaust valve (32) and the drain valve (33)；
F, open second intake valve (421), air enters the engagement cavity (6), while the water in the engagement cavity (6) by
The second pipe (42) flows into the water tank (4)；
G, when water does not flow into water tank (4) from the second pipe (42), second shut-off valve (412) is opened, it is described
Remaining water flows into the water tank (4) by the first pipe (41) in engagement cavity (6).
5. the method according to claim 4 for the draining of FS final spice engagement cavity, which is characterized in that start described in execution
Before step A, diving confirms two ring-type GINA waterstop (7) noses of FS final spice (1) both ends setting and corresponding institute
It states and is not mingled with foreign matter between immersed tube (2) end.
6. the method according to claim 4 for the draining of FS final spice engagement cavity, which is characterized in that start described in execution
Before step A, air accumulator (3) pressurization carries out airtight test, and checks the first pipe (41), the second pipe
(42), the valvular air-tightness of the third pipeline (43) and institute and watertightness.
7. the method according to claim 4 for the draining of FS final spice engagement cavity, which is characterized in that start described in execution
Before step A, the initial pressure of initial pressure and the second pressure gauge (34) to the first pressure gauge (53) is carried out
Calibration.
8. the method according to claim 4 for the draining of FS final spice engagement cavity, which is characterized in that execute the step
When G, remaining water in the engagement cavity (6) is evacuated to the water tank (4) with ballast pump.
9. the method according to claim 4 for the draining of FS final spice engagement cavity, which is characterized in that complete the step
After G, confirm that the watertight situation of the engagement cavity (6) meets design requirement, is arranged water remaining in the engagement cavity (6) using stripping pump
Out.
10. according to the described in any item methods for the draining of FS final spice engagement cavity of claim 4-9, which is characterized in that when
Water drains into after the water tank (4) in the engagement cavity (6), is exported water in the water tank (4) by immersed tube tunnel with immersible pump
End discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779855.2A CN107642100B (en) | 2017-09-01 | 2017-09-01 | Device and method for the draining of FS final spice engagement cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779855.2A CN107642100B (en) | 2017-09-01 | 2017-09-01 | Device and method for the draining of FS final spice engagement cavity |
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| CN107642100A CN107642100A (en) | 2018-01-30 |
| CN107642100B true CN107642100B (en) | 2019-06-07 |
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ID=61110690
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710779855.2A Active CN107642100B (en) | 2017-09-01 | 2017-09-01 | Device and method for the draining of FS final spice engagement cavity |
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| CN (1) | CN107642100B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529796B (en) * | 2021-05-21 | 2023-07-25 | 中交三航局第二工程有限公司 | Joint device for suspension tunnel |
| CN115046537B (en) * | 2022-08-17 | 2022-10-25 | 中交第一航务工程局有限公司 | Underwater check method for closure attitude of immersed tunnel |
| CN115748820B (en) * | 2023-01-10 | 2023-05-12 | 中交第一航务工程局有限公司 | Pushing type final joint cavity drainage method |
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|---|---|---|---|---|
| KR100921188B1 (en) * | 2009-04-15 | 2009-10-13 | (주)대우건설 | Connecting structure and connecting methods of immersed tunnel |
| CN102691314A (en) * | 2012-06-11 | 2012-09-26 | 中交一航局第二工程有限公司 | Internal deviation correcting fine adjusting system and adjusting technology for immersed tubes |
| CN102720222A (en) * | 2012-06-15 | 2012-10-10 | 中交一航局第二工程有限公司 | Tail-end deviation rectifying process for immersed pipe |
| CN103912016A (en) * | 2012-12-31 | 2014-07-09 | 中交一航局第二工程有限公司 | Pipe joint tensioning crimping method |
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2017
- 2017-09-01 CN CN201710779855.2A patent/CN107642100B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100921188B1 (en) * | 2009-04-15 | 2009-10-13 | (주)대우건설 | Connecting structure and connecting methods of immersed tunnel |
| CN102691314A (en) * | 2012-06-11 | 2012-09-26 | 中交一航局第二工程有限公司 | Internal deviation correcting fine adjusting system and adjusting technology for immersed tubes |
| CN102720222A (en) * | 2012-06-15 | 2012-10-10 | 中交一航局第二工程有限公司 | Tail-end deviation rectifying process for immersed pipe |
| CN103912016A (en) * | 2012-12-31 | 2014-07-09 | 中交一航局第二工程有限公司 | Pipe joint tensioning crimping method |
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| CN107642100A (en) | 2018-01-30 |
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