CN-121992824-A - Underwater box culvert water stopping system and underwater box culvert butt joint method

CN121992824ACN 121992824 ACN121992824 ACN 121992824ACN-121992824-A

Abstract

The invention relates to an underwater box culvert water stop system and an underwater box culvert butt joint method. The butt joint ends of the two pipe sections are arranged on the base, and the first water stop belt is clamped between the butt joint ends of the two pipe sections. The second waterstop sets up in the surface of tube coupling, and the second waterstop covers on the butt joint of the top surface and the side of two tube couplings, and the both ends of second waterstop along its width direction are connected with two tube couplings respectively, and the both ends of second waterstop along its length direction extend to on the base and be connected with the base. The second waterstop seals the butt joint of the underwater box culvert, so that external seawater, sediment or marine organisms can be prevented from entering the butt joint, and the service life of the first waterstop is prolonged. The butt joint ends of two adjacent pipe joints are supported by the base, so that deformation or displacement of the first water stop belt caused by dislocation of the two pipe joints is prevented, and the sealing performance of the whole underwater box culvert water stop system is further ensured.

Inventors

ZHANG CAIFEI
CHEN ZHICHENG
SUN SHIPENG
XIE WEIDONG
FAN ZUOHONG
CHEN FEIFAN
LAN JIANJUN
ZHENG YANAN
ZHAO ZEXU
MENG LONGLONG

Assignees

广州打捞局

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (10)

1. The utility model provides a box culvert stagnant water system under water, its characterized in that, including first waterstop (1), second waterstop (2) and base (3), the butt joint end of two tube coupling all set up in on base (3), first waterstop (1) is pressed from both sides tightly between the butt joint end of tube coupling, first waterstop (1) are used for keeping apart inner space and the outer space of tube coupling, second waterstop (2) set up in the surface of tube coupling, second waterstop (2) cover two on the butt joint of the top surface and the side of tube coupling, second waterstop (2) are connected with two tube coupling respectively along its width direction's both ends, second waterstop (2) extend to along its length direction's both ends on base (3) and with base (3) are connected.
2. The underwater box culvert water stop system of claim 1, wherein the base (3) comprises a concrete floor (31) and an elastic pad (32), the elastic pad (32) is mounted on the top surface of the concrete floor (31), and the elastic pad (32) is abutted with the bottom surface of the pipe joint.
3. The underwater box culvert water stopping system according to claim 2, wherein the thickness dimension of the concrete bottom plate (31) is 400-600 mm, and/or the distance dimension between the end face of the concrete bottom plate (31) and the pipe joint is 1000-2000 mm along the width direction of the pipe joint.
4. The underwater box culvert water stop system according to claim 1, characterized in that the second water stop (2) is an omega water stop, the second water stop (2) comprises a hollow section (23) and solid sections (24) connected to two ends of the hollow section (23) along the length direction of the second water stop (2), the hollow section (23) covers on the butt joint of the top surface and the side surface of two pipe joints, and the solid sections (24) are used for being connected with the base (3).
5. The underwater culvert water-stopping system of claim 4, further comprising a fastener (9), wherein the fastener (9) comprises a first pressing plate (91), a second pressing plate (92) and a bolt (95), the first pressing plate (91) is flatly pressed on one side of the hollow section (23) facing away from the top surface of the pipe section, the first pressing plate (91), the hollow section (23) and the pipe section are fixed through the bolt (95), the second pressing plate (92) is flatly pressed on one side of the hollow section (23) facing away from the side of the pipe section, the second pressing plate (92), the hollow section (23) and the pipe section are fixed through the bolt (95), and the first pressing plate (91) located at the corner of the pipe section is abutted with the second pressing plate (92) and fixed through the bolt (95).
6. The underwater box culvert water stop system of claim 4 further comprising a fastener (9), wherein the fastener (9) comprises a third pressing plate (93), an elastic pressing block (94), a channel steel assembly (96) and an embedded screw (97), the elastic pressing block (94), the third pressing plate (93) and the channel steel assembly (96) are sequentially pressed on one side, away from the base (3), of the solid section (24) from bottom to top, the channel steel assembly (96) and the base (3) are fixed through the embedded screw (97), and an accommodating groove for accommodating a protruding structure on the solid section (24) is formed in the elastic pressing block (94).
7. The underwater culvert water-stopping system of any of claims 1-6, further comprising an end plate (4), wherein the end plates (4) are arranged at the abutting ends of the two pipe joints, the first water-stop strip (1) is clamped between the two end plates (4), the end plates (4) are metal plates, and the end plates (4) are electrically connected with sacrificial anodes (6).
8. -Underwater box culvert water stop system according to any of claims 1 to 6, characterized in that it further comprises a protective cover (5), said protective cover (5) being mounted on said pipe section and on said foundation (3), a housing cavity being defined between said protective cover (5) and said pipe section and between said protective cover (5) and said foundation (3) for housing said second water stop (2).
9. -Underwater box culvert water stop system according to any of claims 1 to 6, characterized in that it further comprises a tie-rod assembly (7), the two ends of the tie-rod assembly (7) being connected to the two pipe sections respectively, the tie-rod assembly (7) being adapted to tighten the two pipe sections.
10. An underwater box culvert docking method, characterized by being used for installing the underwater box culvert water stopping system as claimed in any one of claims 1 to 9 on two pipe joints which are mutually docked, and specifically comprising the following steps: step S1, providing a base (3) and two pipe joints, wherein one pipe joint is an installed pipe joint (100) which is installed on an underwater foundation, the other pipe joint is a pipe joint (200) to be installed, the base (3) is installed on the underwater foundation in advance before the installed pipe joint (100) is installed, and the butt joint end of the installed pipe joint (100) is placed on the base (3); S2, installing a first water stop (1) at the butt joint end of the pipe joint (200) to be installed, lifting the pipe joint (200) to a position of being in pre-butt joint by using lifting equipment, and enabling the pipe joint (200) to be installed and the installed pipe joint (100) to be separated by a certain distance; S3, respectively installing two ends of a pulling and closing device (8) on two pipe sections, and driving the pipe section (200) to be installed and the installed pipe section (100) to mutually abut against by using the pulling and closing device (8); S4, installing a second water stop (2) at the butt joint ends of the two pipe joints, wherein the second water stop (2) covers the butt joint joints of the top surfaces and the side surfaces of the two pipe joints, and two ends of the second water stop (2) in the length direction are connected with the base (3); And S5, installing a protective cover (5) on the pipe joint and the base (3), and enabling the protective cover (5) to cover the periphery of the second water stop belt (2).

Description

Underwater box culvert water stopping system and underwater box culvert butt joint method Technical Field The invention relates to the technical field of underwater box culvert installation, in particular to an underwater box culvert water stopping system and an underwater box culvert butt joint method. Background The circulating water system of nuclear power and thermal power plants is a key arrangement for guaranteeing the safe operation of the unit, and the underwater box culvert for taking and draining water is taken as an important component part of the circulating water system and bears the important function of conveying a large amount of cooling water and warm water. Along with the rapid development of the national power industry, particularly the centralized construction of coastal nuclear power projects, the underwater box culvert is widely applied due to the advantages of high construction efficiency, controllable quality and the like. In the construction process of the underwater box culvert, the water seepage prevention problem at the joints of the box culvert is a technical key point needing long-term research. In the related art, the main water seepage prevention means at the joints of the box culverts is that a GINA water stop belt or a Q-type water stop belt is arranged between two adjacent pipe joints in the box culverts so as to play a role in sealing the joints of the two adjacent pipe joints. However, during long-term running of the underwater box culvert, a large amount of sediment and marine organism erosion can be accumulated at the joint of the two pipe joints, so that the service life of the water stop belt is shortened or the sealing performance is invalid. And, influenced by marine environment, settlement of the installation foundation and geological movement, dislocation can occur between two adjacent pipe joints, and the deformation or displacement of the water stop belt is caused, so that the sealing performance of the water stop belt is reduced. Disclosure of Invention The invention aims to provide an underwater box culvert water stopping system and an underwater box culvert butt joint method, which have good sealing performance and long service life. To achieve the purpose, the invention adopts the following technical scheme: In a first aspect, an underwater box culvert water stopping system is provided, including first waterstop, second waterstop and base, the butt joint end of two tube coupling all set up in on the base, first waterstop is pressed from both sides tightly between the butt joint end of two tube coupling, first waterstop is used for keeping apart inner space and the external space of tube coupling, the second waterstop set up in the surface of tube coupling, the second waterstop cover two on the butt joint of the top surface and the side of tube coupling, the both ends of second waterstop along its width direction are connected with two respectively the tube coupling, the both ends of second waterstop along its length direction extend to on the base and with the base is connected. As a preferable scheme of the underwater box culvert water stopping system, the base comprises a concrete bottom plate and an elastic pad, wherein the elastic pad is arranged on the top surface of the concrete bottom plate and is abutted with the bottom surface of the pipe joint. As a preferable scheme of the underwater box culvert water stop system, the thickness dimension of the concrete bottom plate is 400-600 mm, and/or the distance dimension between the end face of the concrete bottom plate and the pipe joint is 1000-2000 mm along the width direction of the pipe joint. As a preferred scheme of the underwater box culvert water stop system, the second water stop is an omega water stop, the second water stop comprises a hollow section and solid sections connected to two ends of the hollow section along the length direction of the second water stop, the hollow section is covered on the butt joint seam of the top surface and the side surface of the pipe joint, and the solid sections are used for being connected with the base. As a preferred scheme of the water stopping system of the underwater box culvert, the water stopping system further comprises a fastener, wherein the fastener comprises a first pressing plate, a second pressing plate and a bolt, the first pressing plate is flatly pressed on one side, deviating from the top surface of the pipe joint, of the hollow section, the first pressing plate, the hollow section and the pipe joint are fixed through the bolt, the second pressing plate is flatly pressed on one side, deviating from the side surface of the pipe joint, of the hollow section, the second pressing plate, the hollow section and the pipe joint are fixed through the bolt, and the first pressing plate and the second pressing plate which are positioned at the corner of the pipe joint are abutted and fixed through the bolt. As a preferred scheme of box culvert stagnant w