CN-121976564-A - Method for plugging underwater box culvert

CN121976564ACN 121976564 ACN121976564 ACN 121976564ACN-121976564-A

Abstract

The invention discloses an underwater box culvert plugging method which comprises the steps of S10, providing a counter-pulling assembly, sinking a counter-pulling beam of the counter-pulling assembly to a first height at an open channel end of a box culvert, enabling the counter-pulling beam to be abutted to the box culvert, S20, providing a plugging assembly, sinking a steel seal door of the plugging assembly to a second height at a sea end of the box culvert, S30, connecting a tensioning piece of the counter-pulling assembly to the counter-pulling beam, enabling the tensioning piece to pass through a culvert of the box culvert, and enabling the tensioning piece to be connected with the steel seal door, S40, starting a winding mechanism to wind the tensioning piece, enabling the tensioning piece to tension the counter-pulling beam and the steel seal door, and enabling the steel seal door to be capable of extruding a water stop belt to be abutted to the sea end face so as to plug the culvert. According to the underwater box culvert plugging method, the opposite-pull beam is used for providing support on the end face of the open channel, so that the winding mechanism can pull the steel seal door and the opposite-pull beam tightly through the tensioning piece, the steel seal door can press the water stop belt to abut against the sea end face, the operation is simple, quick plugging of a culvert of the box culvert is realized, and the plugging efficiency is high.

Inventors

XIE WEIDONG
TANG FUYUAN
FAN ZUOHONG
WANG HAOJUN
XIN LEI
ZHANG ZHIAN
LIU ZHIGANG
QU JINGWEI
CHEN ZHICHENG
ZHAO YONG

Assignees

广州打捞局

Dates

Publication Date: 20260505
Application Date: 20260326

Claims (10)

1. The method for plugging the underwater box culvert is characterized by comprising the following steps of: S10, providing a counter-pulling assembly, sinking counter-pulling beams of the counter-pulling assembly to a first height at an open channel end of a box culvert, and enabling the counter-pulling beams to be abutted to the open channel end faces of the box culvert arranged along a first direction; S20, providing a plugging assembly, and sinking a steel sealing door of the plugging assembly to a second height at the sea side of the box culvert; s30, connecting a tensioning piece of the opposite-pulling assembly with the opposite-pulling beam, enabling the tensioning piece to pass through a culvert of the box culvert and pass out of the sea-side end face of the box culvert, and enabling the tensioning piece to be connected with the steel seal door; S40, starting a winding mechanism of the opposite-pulling assembly to wind the tensioning piece, so that the opposite-pulling beam and the steel seal door are tensioned by the tensioning piece, the steel seal door can squeeze a water stop belt of the plugging assembly to abut against the sea end face, and the water stop belt is arranged around the culvert to plug the culvert.
2. The method for plugging an underwater culvert according to claim 1, wherein in step S10, the method comprises the following specific steps: S101, sinking the pair of pull beams into water at a position with a first size from the end face of the open channel by using a hoisting mechanism; S102, opening a first water inlet valve and a first air outlet valve on the counter-pulling beam, enabling water to enter a first accommodating cavity in the counter-pulling beam through a first water inlet of the counter-pulling beam, regulating and controlling the relation between the gravity of the counter-pulling beam and the buoyancy of the counter-pulling beam, enabling the counter-pulling beam to sink to the first height steadily, and closing the first water inlet valve and the first air outlet valve.
3. The method for plugging an underwater culvert according to claim 2, further comprising, after step S102: S103, utilizing the hoisting mechanism moves the pair of pull beams towards the box culvert along the first direction, so that two limiting blocks arranged along the second direction on the pair of pull beams are inserted into the culvert, the two limiting blocks are respectively attached to two cavity walls arranged along the second direction of the culvert to limit, and the second direction is perpendicular to the first direction.
4. The method according to claim 3, wherein in step S103, during the process of moving the pair of pull beams toward the culvert in the first direction, the end of the first inclined surface of the limiting block is inserted into the culvert, the first inclined surface abuts against the open channel end of the culvert, and sliding guiding is performed by using the first inclined surface and the open channel end of the culvert under the pushing of the hoisting mechanism, so that the limiting block is completely inserted into the culvert.
5. The method for plugging an underwater culvert according to any one of claims 1 to 4, wherein in step S20, the method comprises the following specific steps: S201, sinking the steel seal door into water by utilizing a hoisting mechanism at a position with a second size from the sea end surface; S202, opening a second water inlet valve and a second exhaust valve on the steel seal door, enabling water to pass through a second water inlet of the steel seal door to enter a second accommodating cavity of the steel seal door, regulating and controlling the relation between the gravity of the steel seal door and the buoyancy of the steel seal door, enabling the steel seal door to stably sink to the second height, and closing the second water inlet valve and the second exhaust valve.
6. The method for plugging an underwater culvert in claim 5, further comprising, after step S202: S203, moving the steel seal door towards the box culvert along the first direction by utilizing the hoisting machine, so that two positioning blocks arranged along the second direction on the steel seal door can be supported on the bottom cavity wall of the culvert, the two positioning blocks are also used for limiting the movement of the steel seal door along the second direction, and the second direction is perpendicular to the first direction.
7. The method according to claim 6, wherein in step S203, the steel seal door is moved toward the culvert in the first direction to insert the end of the second inclined surface of the positioning block into the culvert, the second inclined surface abuts against the sea end of the culvert, and the second inclined surface of the four-breaker is slidably guided with the sea end of the culvert under the pushing of the hoisting mechanism, so that the positioning block is completely inserted into the culvert.
8. The method for plugging an underwater culvert according to any one of claims 1 to 4, wherein in step S30, the method comprises the following specific steps: s301, rotatably connecting a first pulley of the tensioning piece to a mounting block, enabling the mounting block to be connected with the steel seal door through a plurality of second steel wire ropes, and respectively arranging one second steel wire rope at least at four corners adjacent to the culvert; S302, winding one end of a first steel wire rope of the tensioning piece into the winding mechanism, enabling the first steel wire rope to pass through the first pulley after winding around a second pulley at the top of the pair of pull beams, winding back to a third pulley at one side, adjacent to a box culvert, of the pair of pull beams, and then connecting to the mounting block.
9. The method according to claim 8, wherein the culvert includes at least two culverts arranged along a second direction, and in step S30, each culvert is correspondingly provided with a set of the tension members and the winding mechanism to connect the pair of tension members and the steel seal door respectively, and the second direction is perpendicular to the first direction.
10. The method for plugging an underwater culvert in any one of claims 1-4, further comprising, after step S20, before step S30: s21, utilizing a shovel to shovel out the bulges on the sea end surface so as to keep the sea end surface flat; s22, providing a cushion pad, attaching a main body part of the cushion pad to the sea-leaning end surface, and sleeving a surrounding wall arranged around the outer periphery of the main body part to the outer periphery side of the box culvert.

Description

Method for plugging underwater box culvert Technical Field The invention relates to the technical field of temporary blocking of box culverts, in particular to an underwater box culvert blocking method. Background At present, circulating water systems of a plurality of domestic power generation companies mostly adopt river (or sea water cooling modes. The direct current circulation system in the prior art is usually used for taking and draining water by extending to a river or sea water through a box culvert. After a period of use or when the open channel end of the box culvert is required to be constructed, the box culvert is required to be plugged and disconnected. At present, a commonly adopted plugging mode is to realize plugging by utilizing the extrusion of a large-scale air bag and a culvert of a box culvert. However, the large-scale gasbag shutoff water-flow impact resistance is weak, and the gasbag easily receives water-flow impact to take place to shift or local deformation to lead to sealed inefficacy, and the gasbag is easily by protruding fish tail or the damage on the culvert chamber wall, is difficult to repair after the damage under water, needs to carry out whole change, and stability in use is poor. Disclosure of Invention The invention aims to provide an underwater box culvert plugging method which is simple in structure, convenient to operate and capable of stably and effectively plugging a culvert of a box culvert. To achieve the purpose, the invention adopts the following technical scheme: The method for plugging the underwater box culvert comprises the following steps: S10, providing a counter-pulling assembly, sinking counter-pulling beams of the counter-pulling assembly to a first height at an open channel end of a box culvert, and enabling the counter-pulling beams to be abutted to the open channel end faces of the box culvert arranged along a first direction; S20, providing a plugging assembly, and sinking a steel sealing door of the plugging assembly to a second height at the sea side of the box culvert; s30, connecting a tensioning piece of the opposite-pulling assembly with the opposite-pulling beam, enabling the tensioning piece to pass through a culvert of the box culvert and pass out of the sea-side end face of the box culvert, and enabling the tensioning piece to be connected with the steel seal door; S40, starting a winding mechanism of the opposite-pulling assembly to wind the tensioning piece, so that the opposite-pulling beam and the steel seal door are tensioned by the tensioning piece, the steel seal door can squeeze a water stop belt of the plugging assembly to abut against the sea end face, and the water stop belt is arranged around the culvert to plug the culvert. In one embodiment, in step S10, the following specific steps are included: S101, sinking the pair of pull beams into water at a position with a first size from the end face of the open channel by using a hoisting mechanism; S102, opening a first water inlet valve and a first air outlet valve on the counter-pulling beam, enabling water to enter a first accommodating cavity in the counter-pulling beam through a first water inlet of the counter-pulling beam, regulating and controlling the relation between the gravity of the counter-pulling beam and the buoyancy of the counter-pulling beam, enabling the counter-pulling beam to sink to the first height steadily, and closing the first water inlet valve and the first air outlet valve. In one embodiment, after step S102, the method further includes: S103, utilizing the hoisting mechanism moves the pair of pull beams towards the box culvert along the first direction, so that two limiting blocks arranged along the second direction on the pair of pull beams are inserted into the culvert, the two limiting blocks are respectively attached to two cavity walls arranged along the second direction of the culvert to limit, and the second direction is perpendicular to the first direction. In one embodiment, in step S103, in the process that the pair of tie bars move towards the culvert along the first direction by the first dimension, the end of the first inclined surface of the limiting block is inserted into the culvert, the first inclined surface abuts against the open channel end of the culvert, and the sliding guide is performed by using the first inclined surface and the open channel end of the culvert under the pushing of the hoisting mechanism, so that the limiting block is completely inserted into the culvert. In one embodiment, in step S20, the following specific steps are included: S201, sinking the steel seal door into water by utilizing a hoisting mechanism at a position with a second size from the sea end surface; S202, opening a second water inlet valve and a second exhaust valve on the steel seal door, enabling water to pass through a second water inlet of the steel seal door to enter a second accommodating cavity of the steel seal door, regulating and contr