CN-117230849-B - Device and method for repairing damage of underwater fixed structure

CN117230849BCN 117230849 BCN117230849 BCN 117230849BCN-117230849-B

Abstract

The invention discloses a device and a method for repairing damage of an underwater fixed structure, wherein the device comprises a hemispherical or semi-hemispherical shell which is the same in shape and material as the underwater fixed structure to be repaired, two flexible pull ropes which are connected with a ship winch and are used for pulling the shell to adjust levelness of the bottom end face of the shell in the Y direction are fixed at the top of the shell, two first electromagnetic reversing valves which are used for spraying water downwards to adjust levelness of the bottom end face of the shell in the X direction are symmetrically arranged at the bottom of the outer wall of the shell, the two first electromagnetic reversing valves are also used as water inlet valves, and the device also comprises a second electromagnetic reversing valve which is used for adjusting forward or backward in the X direction, a third electromagnetic reversing valve which is used for adjusting forward or backward in the Y direction, a plurality of levelness sensors, an air pump and a flexible air pipe which is used for inflating the inside of the shell. The invention has the advantages of strong practicality, strong operability, small construction difficulty, safe construction, complete avoidance of damage and expansion and long-term normal use of the underwater structure to be repaired.

Inventors

XIE XINYU
ZHENG XUDONG
LIU KAINING
ZHENG LINGWEI
WU YONG
ZHOU QIHUI

Assignees

浙江大学温州研究院

Dates

Publication Date: 20260505
Application Date: 20230911

Claims (7)

1. The utility model provides a fixed structure damage prosthetic devices under water which characterized in that: Comprises a hemispherical or more hemispherical housing which has the same shape and material as the underwater fixed structure to be repaired; The top of the housing is fixedly provided with two flexible pull ropes which are connected with a ship winch and are used for pulling the housing to adjust the levelness of the bottom end face of the housing in the Y direction, and the bottom of the outer wall of the housing is symmetrically provided with two first electromagnetic directional valves which are used for spraying water downwards to adjust the levelness of the bottom end face of the housing in the X direction; The flexible air pipe is communicated with the air pump on the ship and the first electromagnetic stop valve fixed at the top of the housing, and is used for draining water when the housing is submerged so as to buffer the sinking speed, and the housing is compacted with the seabed, the lake bed or the river bed and then is inflated into the housing; The utility model also comprises at least one water pumping pipe, the inlet end of which is positioned at the lower part of the inner wall of the housing, the water pumping pipe passes through the top of the housing and is fixedly sealed, the top of the housing is provided with a second electromagnetic stop valve communicated with the inner and outer water pumping pipes of the housing, outlet end of water pumping pipe communicating with a suction pump on the ship; Two second electromagnetic reversing valves which horizontally spray water to adjust the forward or backward direction of the X direction are symmetrically arranged at the bottom of the outer wall of the housing, two third electromagnetic reversing valves which horizontally spray water to adjust the forward or backward direction of the Y direction are symmetrically arranged at the bottom of the outer wall of the housing, a submersible pump is fixed in the housing, and the submersible pump is communicated with the first electromagnetic reversing valve, the second electromagnetic reversing valve and the third electromagnetic reversing valve through a plurality of connecting water pipes; The device also comprises a battery which is arranged in the housing and used for providing power, wherein the battery is electrically connected with the first electromagnetic stop valve, the second electromagnetic stop valve, the first electromagnetic reversing valve, the second electromagnetic reversing valve, the third electromagnetic reversing valve, the submersible pump, the underwater positioning instrument and the plurality of levelness sensors and provides power; The underwater part of the split type underwater acoustic communication machine is arranged in the housing and is in signal connection with an underwater controller, and the underwater controller is in signal connection with a first electromagnetic stop valve, a second electromagnetic stop valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve, a third electromagnetic reversing valve, a submersible pump, an underwater positioning instrument and a plurality of levelness sensors; The bottom of the inner wall of the housing is circumferentially provided with a plurality of steel balls for radial limiting with the outer bottom of the underwater fixed structure to be repaired, each steel ball is rotatably matched in a steel ball hoop fixed on the bottom of the inner wall of the housing, and the steel balls can roll with the inner wall of the housing and the outer wall of the underwater fixed structure and can abut against the inner wall of the housing and the outer wall of the underwater fixed structure after the housing compacts the seabed, the lake bed or the river bed.
2. The underwater fixed structure damage repairing device is characterized in that a connecting structure of a submersible pump and an electromagnetic valve is that a water inlet of the submersible pump is communicated with two first electromagnetic directional valves through a connecting water pipe, a water outlet of the submersible pump is also communicated with two first electromagnetic directional valves through the connecting water pipe, the outer end of each first electromagnetic directional valve is communicated with one third electromagnetic stop valve through the connecting water pipe, a water outlet of the submersible pump is also communicated with two second electromagnetic directional valves through the connecting water pipe and two fourth electromagnetic stop valves, a water outlet of the submersible pump is also communicated with two third electromagnetic directional valves through the connecting water pipe and two fifth electromagnetic stop valves, a battery is electrically connected with the third electromagnetic stop valves, the fourth electromagnetic stop valves and the fifth electromagnetic stop valves and provides power, and the third electromagnetic stop valves, the fourth electromagnetic stop valves and the fifth electromagnetic stop valves are all in signal connection with a controller.
3. The underwater fixed structure damage repairing device of claim 1, wherein the lower end of each flexible pull rope is buckled on a lifting lug at the top of the housing through a detachable buckle ring, the joint of each flexible air pipe and the first electromagnetic stop valve is detachably connected through a first screwing joint, at least one flexible water pumping pipe is detachably connected through a second screwing joint arranged on the outer wall of the top of the housing, each flexible air pipe, each flexible water pumping pipe and each flexible pull rope are bound together through ropes at intervals along the length direction, the housing sinks, the flexible pull rope is in a straightening state, and the flexible air pipe and the flexible water pumping pipe are in a shrinkage state.
4. The device for repairing the damage of the underwater fixed structure according to claim 1, further comprising a liquid level sensor arranged on the inner wall of the housing, wherein a probe of the liquid level sensor is positioned at the bottom of the inner wall of the housing, and further comprising a barometer which is arranged in the housing and is used for detecting whether the housing leaks air, wherein a battery is electrically connected with the liquid level sensor and the barometer and provides power, and the liquid level sensor and the barometer are both in signal connection with the underwater controller.
5. The device for repairing damage to an underwater fixed structure according to claim 1, further comprising one or more cameras with illumination lamps arranged on the housing, wherein the battery is electrically connected with the one or more cameras with illumination lamps and provides power, and the one or more cameras with illumination lamps are in signal connection with the underwater controller.
6. A method for repairing damage of an underwater fixed structure by adopting the repairing device as claimed in claim 1 is characterized by comprising the following construction steps: 1) According to the positioning signals sent by the underwater fixed structure to be repaired, an operator puts the prefabricated housing into water from a ship above the underwater fixed structure, the water controller controls the winch to gradually release the flexible pull rope to enable the housing to sink, when required, the water controller starts the air pump, the underwater controller controls the first electromagnetic stop valve to be opened, the housing is inflated and buffered to slow down the descending speed, the underwater positioning instrument provides positioning signals for the underwater controller at any time, the underwater controller controls the starting and stopping of the submersible pump and controls the starting and stopping of all the electromagnetic stop valves and the electromagnetic reversing valves so as to adjust the position of the housing X in the horizontal direction, the position of the Y in the horizontal direction and the levelness of the bottom surface X of the housing, the water controller controls the flexible pull rope on the winch to adjust the levelness of the bottom surface Y of the housing, and the housing is sunk by gravity after the housing is aligned with the underwater fixed structure to be repaired, and the inner wall of the housing rolls along the circumference and the outer wall of the housing, the seabed or the riverbed abuts against the inner wall of the housing and the outer wall of the underwater fixed structure; 2) And the water controller starts the water suction pump, and simultaneously opens the second electromagnetic stop valve to pump water to the ship and drain the water to the water surface through the drain pipe until the liquid level sensor sends a water pumping signal, namely, the water suction pump and the second electromagnetic stop valve are closed.
7. The method of claim 6, further comprising the steps of compacting the bottom end of the housing after the water is pumped out by the water level sensor, starting the air pump by the water controller after the water in the housing is pumped out by the water level sensor, and simultaneously opening the first electromagnetic stop valve by the water controller to inflate the housing, so as to form a pressure difference between the inside and the outside of the housing and keep the pressure difference for a certain time, thereby determining the air tightness of the housing.

Description

Device and method for repairing damage of underwater fixed structure Technical Field The invention relates to the technical field of underwater structure repair construction, in particular to an underwater fixed structure damage repair device and method. Background The underwater fixed structures refer to various engineering structures fixed at the bottoms of oceans, lakes or rivers, such as marine cable auxiliary structures, underwater isolation cabins, underwater ocean observation stations and the like, are generally built by prefabricated reinforced concrete or toughened glass, and are commonly characterized by arc-shaped, closed and expensive precise monitoring instruments in the interiors. These underwater structures take on important functions and tasks including ocean resource development, energy exploration, transportation, ocean scientific research, ecological protection, and the like. However, due to long-term impact of water flow, erosion of water body, change of sediment of seabed, lake bed or river bed, and influence of natural disasters such as earthquake, etc., damage phenomenon may occur to underwater structures in the use process, and generally, the phenomenon can be found in regular, irregular or timely detection of underwater fixed structures, for example, grid type ultrasonic probes are stuck and fixed on the inner and outer surfaces of the original structures, signals of the ultrasonic probes are timely transmitted to an onshore control system, and after the control system analyzes the ultrasonic signals, warning signals are sent out after the underwater structures are found to be damaged. Once the underwater structure is damaged in the use process, the stability and the service life of the structure are not only affected, but also water inflow in the next structure or other potential safety hazards can be caused if the underwater structure is not repaired in time, and the underwater structure can be normally used after being repaired. Under the condition of shallow water and allowable conditions, cofferdam blocking can be adopted, and the construction method is the same as the reinforcement and repair construction of a ground building after water is pumped out for dry reinforcement and repair. However, the underwater structures are generally under deep water, such as water depth below 300 meters, and the structures are generally located in complex and changeable underwater environments, so that cofferdam protection water pumping dry land method construction cannot be adopted. The traditional repairing mode is that a diver carries stirred glue or cement slurry which is well stirred on a ship and is used for diving and manually repairing, but only obvious cracks can be repaired, and damaged underwater structures cannot be comprehensively reinforced and repaired. And the construction difficulty is high, the safety risk is high, the repair effect often cannot meet the quality requirement, and the normal use of the underwater structure is directly influenced. Because the site selection of the underwater structure is generally severe, i.e. the original site of the underwater structure is not moved, someone tries to remove the original damaged underwater structure and replace the original underwater structure with a new underwater structure. However, in deep water and moving water, the equipment such as precise instruments and the like are required to be carried and landed in good condition, the original damaged underwater structures are removed, the construction waste is carried and landed, the engineering is huge, time-consuming and expensive, a new underwater structure is built in situ, the equipment such as the precise instruments and the like is reinstalled and debugged, and the engineering is huge, time-consuming and expensive. Therefore, in construction practice, one gives up the construction scheme of directly performing conventional dismantling and rebuilding and installing equipment for the underwater fixed structure where breakage has occurred. In recent years, underwater fixed structures with cracks are generally repaired by adopting underwater robots, the underwater robots are used for diving and detecting to find the accurate positions to be repaired, then carrying construction tools for diving operation, drilling holes to be drilled and slurry supplementing. The method has the advantages that the method is simple in structure, low in cost and convenient to use, and the damaged underwater fixed structure is repaired by adopting the underwater robot, and has the defects that 1, the damaged underwater fixed structure is repaired by adopting the underwater robot, the practicability and operability are not strong, for example, specific repair positions are required to be determined, specific perforating and grouting operations are required, requirements on functions, precision and the like of the robot are high, the robot meeting repair requirements is difficult to purchase, differe