CN114000720A - Modular sealing method and device capable of being quickly mounted and dismounted at well head of subway station under construction - Google Patents
Modular sealing method and device capable of being quickly mounted and dismounted at well head of subway station under construction Download PDFInfo
- Publication number
- CN114000720A CN114000720A CN202111399674.XA CN202111399674A CN114000720A CN 114000720 A CN114000720 A CN 114000720A CN 202111399674 A CN202111399674 A CN 202111399674A CN 114000720 A CN114000720 A CN 114000720A
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- subway station
- track
- sealing
- under construction
- closed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3252—Protections, e.g. cover, caps, against impaling on starter reinforcement bars
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
Abstract
The invention discloses a modular sealing method and a device capable of being quickly installed and removed at a well mouth of a subway station under construction, which belong to the technical field of subway construction, and comprise a track mechanism, wherein the track mechanism is fixedly installed at two sides of the well mouth of the subway station, and a plurality of adjacent sealing groups are connected to the track mechanism in a sliding manner; after the sealing group seals the subway station well mouth, the subway station well mouth can be reopened in a folding and gathering mode; the construction work of the subway can ensure the smoothness of the road on the premise of meeting the construction efficiency, and the adverse effect on urban residents in the subway construction process is greatly reduced.
Description
Technical Field
The invention relates to the technical field of subway construction, in particular to a method and a device for quickly installing and disassembling a modular sealing at a well head of a subway station under construction.
Background
Urban subway construction is often arranged in the center of urban roads for facilitating service of surrounding masses and social institutions and efficiently using underground space positions.
Urban subway construction, which is to conveniently serve surrounding masses and social institutions and efficiently use underground space positions, is often arranged in the center of urban roads; in addition, the station main body and the auxiliary structure are overlapped with urban road traffic, so that in the subway construction process, in order to ensure the construction safety, the road section where the station main body is located needs to be blocked, the road section can not be used for vehicle passing, further, vehicles needing to pass through the road section need to be re-planned to go to a destination in a detour mode, the traffic pressure of other unblocked road sections is increased, the pressure borne by a traffic network of the whole city is increased, traffic jam is easy to occur, further, inconvenience is brought to the traveling of urban residents, and the traveling cost of the residents is increased; however, if the station well head is directly and temporarily sealed, the overground and underground construction materials cannot be flexibly exchanged in the subway construction process, and the working efficiency is seriously affected.
Based on the method, the modularized sealing method and the device which can be quickly installed and removed at the well head of the subway station under construction are designed to solve the problems.
Disclosure of Invention
The invention aims to provide a method and a device for quickly installing and disassembling a modular sealing at a well mouth of a subway station, which aims to solve the problems that urban subway construction is provided in the background technology, and is always arranged in the center of an urban road for conveniently serving surrounding masses and social mechanisms and efficiently using underground space positions; in addition, the station main body and the auxiliary structure are overlapped with urban road traffic, so that in the subway construction process, in order to ensure the construction safety, the road section where the station main body is located needs to be blocked, the road section can not be used for vehicle passing, further, vehicles needing to pass through the road section need to be re-planned to go to a destination in a detour mode, the traffic pressure of other unblocked road sections is increased, the pressure borne by a traffic network of the whole city is increased, traffic jam is easy to occur, further, inconvenience is brought to the traveling of urban residents, and the traveling cost of the residents is increased; however, if the station well head is directly and temporarily sealed, the construction materials on the ground and underground cannot be flexibly exchanged in the subway construction process, and the working efficiency is seriously affected.
In order to achieve the purpose, the invention provides the following technical scheme: the modular sealing device capable of being rapidly installed and removed at the well mouth of the subway station under construction comprises a track mechanism, wherein the track mechanism is fixedly installed on two sides of the well mouth of the subway station, and a plurality of adjacent sealing groups are connected to the track mechanism in a sliding mode; the closed group can be opened again the subway station well mouth through the mode of folding gathering after closing the subway station well mouth.
As a further scheme of the invention, the sealing group comprises two adjacent sealing plates, connecting blocks are symmetrically and fixedly connected to two sides of the two sealing plates, sliding rods are fixedly connected to the lower ends of the connecting blocks, the lower ends of the sliding rods are hermetically and slidably connected with communicating pipes, oil tanks are arranged on two sides of the sealing group, the upper end of the left side of each oil tank is fixedly communicated with the communicating pipe at the left end of the same side, the side wall of the right side of each oil tank is slidably connected and hermetically communicated with the communicating pipe at the right end of the same side, and the communicating pipes and the inner cavity of each oil tank are filled with hydraulic oil; the closing plate upper end contact is provided with fixed establishment, fixed establishment is used for avoiding the closing plate rebound, fixed establishment and track mechanism side direction sliding connection.
As a further scheme of the invention, the fixing mechanism comprises two steel rails respectively arranged at two sides of the closed group, a baffle is arranged below the steel rails, a plurality of springs which are arranged at equal intervals are fixedly connected between the baffle and the steel rails, the baffle is contacted with the upper end of the closed plate, the rail mechanism comprises a first rail and a second rail, the lower ends of the first rail and the second rail are fixedly connected with a third rail together, the first rail is connected with the oil tank in a sliding manner, the second rail is connected with the bottom of a communicating pipe at the right side in the closed group in a sliding manner, the side wall of the steel rail is fixedly connected with an L-shaped support, and the L-shaped support is connected with the third rail in a sliding manner.
As a further scheme of the invention, the side wall of the oil tank is connected with a side plate in a sealing and sliding manner, the length of the side plate is twice that of the oil tank, and the middle position of the side plate is fixedly connected and communicated with a communicating pipe.
As a further scheme of the invention, the closing plate comprises a metal shell, and a plurality of supports distributed in an array are fixedly connected inside the metal shell.
As a further scheme of the invention, chamfers are arranged on the lower end faces of the metal shells so as to facilitate the unfolding of the closed group.
As a further scheme of the invention, the part of the communicating pipe connected with the side wall of the oil tank and positioned above the oil tank is supported on the upper end surface of the oil tank so as to reduce the load intensity of the communicating pipe
A modular sealing method capable of being quickly installed and detached at a well head of a subway station under construction comprises the following specific steps:
s1, when in use, a track mechanism is installed on a section where a station wellhead is located;
s2, next, installing a plurality of closed groups on the track mechanism adjacently, and replacing the excavated road surface with the plurality of closed groups;
s3, when the material transportation between ground and underground is needed, temporary roadblocks are arranged around the closing device, and then the closing group is folded to reopen the closed station well mouth
And S4, after the material transportation is finished, opening the sealing group again to seal the station well mouth, and finally removing the roadblock.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the station well mouth is sealed by the foldable and gathered sealing group, so that the road section where the station well mouth is located can normally carry out traffic passage in the daytime, the burden of an urban traffic network is reduced when a subway is built, and the station well mouth can be reopened to carry out material transportation on the ground and underground when needed, so that the sealing of the station well mouth can not generate interference on the subway building process; the construction work of the subway can ensure the smoothness of the road on the premise of meeting the construction efficiency, and the adverse effect on urban residents in the subway construction process is greatly reduced.
2. According to the invention, the oil tank is arranged, so that the two sealing plates in the same sealing group are mutually lifted, and the sealing plates can be lifted by a small force when the sealing group is folded, so that the lifting difficulty and cost of the sealing plates are greatly reduced, further, the opening speed of a station wellhead is improved, and the opening difficulty and cost of the station wellhead are reduced.
3. The hydraulic shock absorber is formed by matching the spring and the oil tank, so that the noise interference of nearby residents caused by the vibration generated by the rapid fluctuation of the sealing plate when a vehicle passes through the sealing group can be effectively prevented, and the adverse effect on urban residents in the subway construction process is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 3 is an enlarged view of the point A in FIG. 2;
FIG. 4 is a schematic side sectional view of the fuel tank of the general structure of the present invention;
FIG. 5 is an enlarged view of the point B in FIG. 4;
FIG. 6 is a side sectional view of the connecting tube of the general construction of the present invention;
FIG. 7 is an enlarged view of FIG. 6 at C;
FIG. 8 is a flow chart of the operation of the apparatus of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a sealing plate 1-1, a metal shell 1-1-1, a support 1-1-2, a connecting block 1-2, a sliding rod 1-3, a communicating pipe 1-4, an oil tank 1-5, a side plate 1-5-1, a steel rail 2-1, a baffle 2-2, a spring 2-3, an L-shaped support 2-4, a first rail 3-1, a second rail 3-2 and a third rail 3-3.
Detailed Description
Referring to fig. 1-8, the present invention provides a technical solution: but install fast and tear modular closing device open at subway station well head under construction, including rail mechanism, its characterized in that: the track mechanism is fixedly arranged on two sides of a wellhead of the subway station, and a plurality of adjacent closed groups are connected to the track mechanism in a sliding manner; the closed group can be opened again the subway station well mouth through the mode of folding gathering after closing the subway station well mouth.
When the device works, the rail mechanisms are fixedly arranged on two sides of a road section where a station wellhead is located, then a plurality of closed groups are adjacently arranged on the rail mechanisms, the excavated road surface is replaced by the plurality of closed groups to meet normal vehicle passing in the daytime, when traffic flow is reduced or materials between the ground and the underground are required to be transported (materials to be transported such as earthwork generated in the process of excavating tunnels and building materials used in the process of building subways) at night, roadblocks are temporarily arranged around the closed devices to prevent vehicles or people from approaching the closed devices, then the closed groups are folded firstly, then the folded closed groups are closed towards the same direction, the closed wellhead station is opened again to transport the materials between the ground and the underground, the closed groups are separated from each other after the transportation of the materials is finished, then the closed groups are opened and closed again, and finally, removing the roadblock, and opening the road again to allow vehicles to pass freely.
Urban subway construction, which is to conveniently serve surrounding masses and social institutions and efficiently use underground space positions, is often arranged in the center of urban roads; in addition, the station main body and the auxiliary structure are overlapped with urban road traffic, so that in the subway construction process, in order to ensure the construction safety, the road section where the station main body is located needs to be blocked, the road section can not be used for vehicle passing, further, vehicles needing to pass through the road section need to be re-planned to go to a destination in a detour mode, the traffic pressure of other unblocked road sections is increased, the pressure borne by a traffic network of the whole city is increased, traffic jam is easy to occur, further, inconvenience is brought to the traveling of urban residents, and the traveling cost of the residents is increased; however, if the station well head is directly and temporarily sealed, the overground and underground construction materials cannot be flexibly exchanged in the subway construction process, and the working efficiency is seriously affected.
According to the invention, the station well mouth is sealed by the foldable and gathered sealing group, so that the road section where the station well mouth is located can normally carry out traffic passage in the daytime, the burden of an urban traffic network is reduced when a subway is built, and the station well mouth can be reopened to carry out material transportation on the ground and underground when needed, so that the sealing of the station well mouth can not generate interference on the subway building process; the construction work of the subway can ensure the smoothness of the road on the premise of meeting the construction efficiency, and the adverse effect on urban residents in the subway construction process is greatly reduced.
As a further scheme of the invention, the closed group comprises two adjacent closed plates 1-1, connecting blocks 1-2 are symmetrically and fixedly connected to two sides of each of the two closed plates 1-1, sliding rods 1-3 are fixedly connected to the lower ends of the connecting blocks 1-2, communicating pipes 1-4 are hermetically and slidably connected to the lower ends of the sliding rods 1-3, oil tanks 1-5 are arranged on two sides of the closed group, the upper ends of the left sides of the oil tanks 1-5 are fixedly communicated with the communicating pipes 1-4 at the left end of the same side, the side walls of the right sides of the oil tanks 1-5 are slidably connected and hermetically communicated with the communicating pipes 1-4 at the right end of the same side, and the inner cavities of the communicating pipes 1-4 and the oil tanks 1-5 are filled with hydraulic oil; the upper end of the closing plate 1-1 is provided with a fixing mechanism in a contact manner, the fixing mechanism is used for preventing the closing plate 1-1 from moving upwards, and the fixing mechanism is connected with the track mechanism in a lateral sliding manner.
When the device works, when one sealing plate 1-1 in the same sealing group is subjected to downward pressure (if a vehicle runs over the sealing plate), the sealing plate 1-1 downwards extrudes the sliding rod 1-3, the sliding rod 1-3 extrudes hydraulic oil in the inner cavity of the oil tank 1-5, further, the hydraulic oil upwards extrudes the other sealing plate 1-1 through the communicating pipe 1-4 and the sliding rod 1-3 of the other sealing plate 1-1, at the moment, the fixing mechanism can prevent the other sealing plate 1-1 from upwards moving, the positions of the two sealing plates 1-1 are kept unchanged, and the two sealing plates 1-1 can support the vehicle to pass through the sealing plate; when a station wellhead needs to be opened, the fixing mechanism slides to the two sides of the sealing group to stagger the fixing mechanism and the sealing group, further, the fixing mechanism cannot limit the position of the sealing group, then one sealing plate 1-1 is directly lifted, at the moment, the other sealing plate 1-1 moves downwards (because the sliding rods 1-3 connected with the two sealing plates 1-1 are communicated with the same oil tank 1-5, the gravity of the two sealing plates 1-1 is interacted through hydraulic oil in the oil tank 1-5 under the natural state, the movement trend of lifting the other sealing plate 1-1 is provided, so that a structure similar to an equal-arm lever is formed, further, when one sealing plate 1-1 is lifted, the other sealing plate 1-1 naturally falls under the action of the self gravity, and because the other sealing plate 1-1 always has the movement trend of lifting the sealing plate 1-1, the force required for actually lifting the closing plate 1-1 is not large, and further, the lifting difficulty and the cost of the closing plate 1-1 are reduced), the right closing plate 1-1 is pushed leftwards after the two closing plates 1-1 are staggered up and down (when the right closing plate 1-1 is pushed leftwards, a communicating pipe 1-4 connected with the side wall of an oil tank 1-5 is driven by a sliding rod 1-3 to slide leftwards along the oil tank 1-5), the two closing plates 1-1 are folded up and down, and finally, the folded closing group slides to the same side along a track mechanism to open the wellhead of a station.
According to the invention, the oil tanks 1-5 are arranged, so that the two sealing plates 1-1 in the same sealing group are mutually lifted, and when the sealing group is folded, the sealing plates 1-1 can be lifted by a small force, so that the lifting difficulty and cost of the sealing plates 1-1 are greatly reduced, further, the opening speed of a station wellhead is increased, and the opening difficulty and cost of the station wellhead are reduced.
As a further scheme of the invention, the fixing mechanism comprises two steel rails 2-1 which are respectively arranged at two sides of the closed group, a baffle 2-2 is arranged below the steel rail 2-1, a plurality of springs 2-3 which are arranged at equal intervals are fixedly connected between the baffle 2-2 and the steel rail 2-1, the baffle 2-2 is contacted with the upper end of the closed plate 1-1, the track mechanism comprises a first track 3-1 and a second track 3-2, the lower ends of the first track 3-1 and the second track 3-2 are fixedly connected with a third track 3-3 together, the first track 3-1 is connected with an oil tank 1-5 in a sliding manner, the second track 3-2 is connected with the bottom of a communicating pipe 1-4 at the right side in the closed group in a sliding manner, the side wall of the steel rail 2-1 is fixedly connected with an L-shaped bracket 2-4, the L-shaped bracket 2-4 is connected with the third track 3-3 in a sliding way.
When the hydraulic oil damper works, when the gravity on the closing plate 1-1 is larger than that of the other closing plate 1-1, the sliding rod 1-3 of the closing plate 1-1 extrudes hydraulic oil in the corresponding communicating pipe 1-4 into the oil tank 1-5, and the excess hydraulic oil in the oil tank 1-5 is extruded into the communicating pipe 1-4 corresponding to the other closing plate 1-1, so that the downward moving speed of the closing plate 1-1 is limited by the flow rate of the hydraulic oil, and the oil tank 1-5 further plays a role of the damper for the two closing plates 1-1; further, when the vehicle passes through the closed group, the closed plate 1-1 is prevented from rapidly fluctuating to generate vibration to cause noise interference to nearby residents; when the closing plates 1-1 are equal, the two closing plates 1-1 are reset under the elastic force of the springs 2-3.
The invention forms a hydraulic shock absorber by the cooperation of the springs 2-3 and the oil tanks 1-5, can effectively prevent the sealing plate 1-1 from rapidly fluctuating to generate vibration to cause noise interference to nearby residents when a vehicle passes through the sealing group, and reduces the adverse effect on urban residents in the subway construction process.
As a further scheme of the invention, the side wall of the oil tank 1-5 is connected with a side plate 1-5-1 in a sealing sliding manner, the length of the side plate 1-5-1 is 1-5 times of that of the oil tank, and the middle position of the side plate 1-5-1 is fixedly connected and communicated with a communicating pipe 1-4.
When the oil tank sealing device works, when the communicating pipes 1-4 slide along the oil tank 1-5, the side plates 1-5-1 can slide along the communicating pipes 1-4, and meanwhile, the sealing connection between the side plates and the oil tank 1-5 is always kept.
The communicating pipe 1-4 can slide with the oil tank 1-5 through the side plate 1-5-1, and meanwhile, the communicating pipe keeps sealed communication with the oil tank 1-5.
As a further scheme of the invention, the closing plate 1-1 comprises a metal shell 1-1-1, and a plurality of supports 1-1-2 distributed in an array are fixedly connected inside the metal shell 1-1-1.
When the sealing plate 1-1 is in work, when a heavy object is rolled on the sealing plate 1-1, the support 1-1-2 plays a supporting role for the metal shell 1-1-1, so that the metal shell 1-1-1 is prevented from deforming, the weight of the sealing plate 1-1 can be reduced on the premise of ensuring the strength of the sealing plate 1-1, and therefore the load of a track mechanism and the difficulty of opening a station well mouth are reduced.
As a further scheme of the invention, chamfers are arranged on the lower end faces of the metal shells 1-1-1 so as to facilitate the unfolding of the closed group.
As a further scheme of the invention, the part of the communication pipe 1-4 connected with the side wall of the oil tank 1-5, which is positioned above the oil tank 1-5, is supported on the upper end surface of the oil tank 1-5, so as to reduce the load intensity of the communication pipe 1-4.
A modular sealing method capable of being quickly installed and detached at a well head of a subway station under construction comprises the following specific steps:
s1, when in use, a track mechanism is installed on a section where a station wellhead is located;
s2, next, installing a plurality of closed groups on the track mechanism adjacently, and replacing the excavated road surface with the plurality of closed groups;
s3, when the material transportation between ground and underground is needed, temporary roadblocks are arranged around the closing device, and then the closing group is folded to reopen the closed station well mouth
And S4, after the material transportation is finished, opening the sealing group again to seal the station well mouth, and finally removing the roadblock.
Claims (8)
1. But install fast and tear modular closing device open at subway station well head under construction, including rail mechanism, its characterized in that: the track mechanism is fixedly arranged on two sides of a wellhead of the subway station, and a plurality of adjacent closed groups are connected to the track mechanism in a sliding manner; the closed group can be opened again the subway station well mouth through the mode of folding gathering after closing the subway station well mouth.
2. The modular closure of claim 1, which is capable of being quickly installed and removed at a shaft of a subway station under construction, and is characterized in that: the sealing group comprises two adjacent sealing plates (1-1), connecting blocks (1-2) are symmetrically and fixedly connected to two sides of the two sealing plates (1-1), sliding rods (1-3) are fixedly connected to the lower ends of the connecting blocks (1-2), communicating pipes (1-4) are hermetically and slidably connected to the lower ends of the sliding rods (1-3), oil tanks (1-5) are arranged on two sides of the sealing group, the upper ends of the left sides of the oil tanks (1-5) are fixedly communicated with the communicating pipes (1-4) at the left ends of the same side, the side walls of the right sides of the oil tanks (1-5) are slidably connected and hermetically communicated with the communicating pipes (1-4) at the right ends of the same side, and the inner cavities of the communicating pipes (1-4) and the oil tanks (1-5) are filled with hydraulic oil; the upper end of the closing plate (1-1) is provided with a fixing mechanism in a contact manner, the fixing mechanism is used for preventing the closing plate (1-1) from moving upwards, and the fixing mechanism is connected with the track mechanism in a lateral sliding manner.
3. The modular closing device of claim 2, which is capable of being quickly mounted and dismounted at a shaft of a subway station under construction, and is characterized in that: the fixing mechanism comprises two steel rails (2-1) which are respectively arranged at two sides of the closed group, a baffle (2-2) is arranged below the steel rails (2-1), a plurality of springs (2-3) which are distributed at equal intervals are fixedly connected between the baffle (2-2) and the steel rails (2-1), the baffle (2-2) is contacted with the upper end of the closed plate (1-1), the track mechanism comprises a first track (3-1) and a second track (3-2), the lower ends of the first track (3-1) and the second track (3-2) are fixedly connected with a third track (3-3) together, the first track (3-1) is in sliding connection with an oil tank (1-5), and the second track (3-2) is in sliding connection with the bottoms of communicating pipes (1-4) at the right side in the closed group, the side wall of the steel rail (2-1) is fixedly connected with an L-shaped support (2-4), and the L-shaped support (2-4) is connected with a third track (3-3) in a sliding mode.
4. The modular closing device of claim 3, which is capable of being quickly mounted and dismounted at a shaft of a subway station under construction, and is characterized in that: the side wall of the oil tank (1-5) is connected with a side plate (1-5-1) in a sealing sliding mode, the length of the side plate (1-5-1) is twice that of the oil tank (1-5), and the middle position of the side plate (1-5-1) is fixedly connected and communicated with a communicating pipe (1-4).
5. The modular closing device of claim 4, which is capable of being quickly mounted and dismounted at a shaft of a subway station under construction, and is characterized in that: the sealing plate (1-1) comprises a metal shell (1-1-1), and a plurality of supports (1-1-2) distributed in an array are fixedly connected inside the metal shell (1-1-1).
6. The modular closing device of claim 5, which is capable of being quickly mounted and dismounted at a shaft of a subway station under construction, and is characterized in that: the lower end face of the metal shell (1-1-1) is provided with chamfers so as to facilitate the unfolding of the closed group.
7. The modular closing device of claim 4, which is capable of being quickly mounted and dismounted at a shaft of a subway station under construction, and is characterized in that: the part of the communicating pipe (1-4) connected with the side wall of the oil tank (1-5) and positioned above the oil tank (1-5) is supported on the upper end surface of the oil tank (1-5) so as to reduce the load intensity of the communicating pipe (1-4).
8. The modular sealing method capable of being quickly mounted and dismounted at the well head of the subway station under construction is suitable for the modular sealing device capable of being quickly mounted and dismounted at the well head of the subway station under construction as claimed in claim 5, and is characterized in that; the specific method comprises the following steps:
s1, when in use, a track mechanism is installed on a section where a station wellhead is located;
s2, next, installing a plurality of closed groups on the track mechanism adjacently, and replacing the excavated road surface with the plurality of closed groups;
s3, when the material transportation between ground and underground is needed, temporary roadblocks are arranged around the closing device, and then the closing group is folded to reopen the closed station well mouth
And S4, after the material transportation is finished, opening the sealing group again to seal the station well mouth, and finally removing the roadblock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399674.XA CN114000720B (en) | 2021-11-24 | 2021-11-24 | Modular sealing method and device capable of being quickly mounted and dismounted at well head of subway station under construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399674.XA CN114000720B (en) | 2021-11-24 | 2021-11-24 | Modular sealing method and device capable of being quickly mounted and dismounted at well head of subway station under construction |
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| CN114000720A true CN114000720A (en) | 2022-02-01 |
| CN114000720B CN114000720B (en) | 2022-11-22 |
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