WO2018192128A1

WO2018192128A1 - Engineering ship and underwater material transportation and assembly method

Info

Publication number: WO2018192128A1
Application number: PCT/CN2017/093623
Authority: WO
Inventors: 汪建华; 何光伟
Original assignee: 广船国际有限公司
Priority date: 2017-04-21
Filing date: 2017-07-20
Publication date: 2018-10-25
Also published as: CN107021187A

Abstract

Disclosed are an engineering ship and an underwater material transportation and assembly method. The engineering ship comprises a ship hull and a ship bow (2). The ship hull comprises two mutually symmetrically demi-hulls (1), with several connecting bridges (3) between the two demi-hulls (1). The connecting bridges (3) are provided with an immersion control system, and several sets of stranded steel wire lifting systems (6) are uniformly distributed on the demi-hulls. The ship bow (2) is connected to one end of the two demi-hulls (1), and the ship bow (2) is an arcuate enclosed-type structure. A housing groove is formed between the ship bow (2) and the two demi-hulls (1), and a side wall of the housing groove is provided with a transverse support system. The arcuate enclosed-type structure of the ship bow (2) prevents windward collision of immersed pipes during transportation, protecting the immersed pipes and reducing fluid resistance against the ship and consumption of energy resources. In addition, the underwater material transportation and assembly method needs only one engineering ship to transport and assemble immersed pipes, saving on costs, occupying little space, and improving working efficiency.

Description

Engineering ship and underwater transportation transportation installation method

Technical field

The invention relates to the technical field of ships, and in particular to a method for transporting and installing engineering vessels and underwater objects.

Background technique

The immersed tube method is a construction method for tunnels under the water. The tunnel built by this method is called a immersed tunnel. The immersed tunnel is a submerged tunnel constructed by floating a number of prefabricated sections to the surface of the sea (or river) and installing them one by one in a dredged foundation.

The existing submarine tunnel immersed pipeline transportation is carried out by two barges and four tugboats or semi-submersible ships. Two barges are used for installation. The whole process requires multiple ships to cooperate closely. The number of ships is high, the cost is high, and the occupied space is large. Small, and has the characteristics of long working hours and low work efficiency. In addition, in the process of consigning the immersed pipe, the impact of the wave on the immersed pipe is large, which not only causes wear on the immersed pipe, but also causes the constructed tunnel to be unstable, and increases the load of the entire system and increases energy consumption.

Summary of the invention

The object of the present invention is to provide a method for transporting and installing engineering vessels and underwater objects, so as to solve the problems in the prior art that the ship has a large number of uses, a large occupied space, a long working time, low work efficiency, easy wear and tear of the sinking pipes, and energy consumption. High technical issues.

As conceived above, the technical solution adopted by the present invention is:

An engineering ship that includes:

a hull comprising two mutually symmetrically disposed sheets, a plurality of connecting bridges connected between the two sheets, the connecting bridge being provided with a sinking control system, and the plurality of sleeves are evenly distributed on the sheet body Steel strand lifting system;

a bow connected to one end of two of the sheets, the bow being a curved enclosure structure, A accommodating groove is formed between the stern and the two sheets, and a lateral support system is disposed on the side wall of the accommodating groove.

Wherein, the sheet body, the connecting bridge and the bow are integrally formed.

Wherein, the deposit control system comprises a plurality of winches.

Wherein, the lateral support system is a plurality of hydraulic cylinders arranged at even intervals.

Wherein, the ship's raft is provided with a central centralized control room, and the sinking control system, the steel strand lifting system and the lateral supporting system are electrically connected to the central centralized control room.

Wherein the two ends of the sheet body away from the bow are provided with a propeller, and the propeller is electrically connected to the central control chamber.

Wherein, the side of the stern is provided with a lateral propulsion mechanism, and the lateral propulsion mechanism is electrically connected to the central concentrating chamber.

Wherein, the sheet body is welded by a steel material.

A method for transporting underwater objects, using the engineering ship according to any of the above, the specific steps are:

The underwater object is pulled to the bottom of the engineering ship, and the engineering ship is ballasted, and the underwater object is moved into the receiving tank of the engineering ship, so that the underwater object is connected with the engineering ship, and the ballast water of the engineering ship is discharged. The underwater objects are upgraded along with the engineering ship;

The engineering ship floats to the installation area, and the ballast project ship goes to the free floating state of the underwater water to adjust the installation position of the underwater object, and the connection between the underwater object and the engineering ship is released, and the installation is put in place.

Wherein, the underwater object is a immersed tube.

The engineering ship proposed by the invention can avoid the impact of the immersed pipe during transportation by setting the stern into a curved confined structure, can protect the immersed pipe, avoid immersed pipe wear, and reduce the fluid. Resistance to the ship reduces energy consumption; the steel strand lifting system is used to apply tension to the immersed pipe, move the immersed pipe into the accommodating groove, and connect the immersed pipe to the engineering ship; the sinking control system is used for sinking When sinking the pipe, at Adjust horizontally and vertically.

The underwater transportation transportation installation method proposed by the invention can complete the transportation and installation of the immersed tube by using only one engineering ship, saving cost, occupying small space, wide application range, good flexibility, reducing draught during operation, and improving Work efficiency.

DRAWINGS

Figure 1 is a schematic structural view 1 of a construction ship provided by the present invention;

2 is a schematic structural view 2 of the engineering ship provided by the present invention.

In the picture:

1, sheet; 2, ship raft; 3, connecting bridge; 4, sinking vertical control system; 5, sinking level control system; 6, steel strand lifting system; 7, central control room; 8, propeller; , lateral propulsion mechanism; 10, positioning fulcrum; 11, crane; 12, railing.

detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

Referring to Figures 1 and 2, an engineering vessel includes a hull and a bow 2. The engineering vessel can be used to transport and install immersed pipes, and can also be used for underwater fishing operations in inland rivers. This embodiment takes the immersed tube transportation installation as an example.

The hull comprises two symmetrical bodies 1 , and a plurality of connecting bridges 3 are connected between the two slabs 1 . The connecting bridge 3 is provided with a sinking control system, and a plurality of sets of steel strands are evenly distributed on the slab 1 a lifting system 6; the bow 2 is connected to one end of the two sheets 1 , and the bow 2 is a curved enclosure structure, and the boat 2 and the two sheets 1 form a receiving groove, and the receiving slot is located The bottom of the engineering vessel is used for accommodating the immersed pipe, and the side wall of the accommodating groove is provided with a lateral support system.

By setting the stern 2 into a curved confined structure, the impact of the immersed pipe during transportation is avoided, the immersed pipe is protected, the immersed pipe is prevented from being worn, the resistance of the fluid to the ship is reduced, and the energy is reduced. Consumption; the steel strand lifting system 6 is used to apply a pulling force to the sinking pipe, and move the sinking pipe into the receiving groove to make the sinking pipe work The ship-to-ship connection; the sinking control system is used to adjust the horizontal and vertical directions when sinking the immersed tube.

The sheet body 1, the connecting bridge 3 and the bow 2 are integrally formed, and the overall strength is high and the service life is long. In the present embodiment, there are three connecting bridges 3, three connecting bridges 3 are evenly spaced, and the connecting bridge 3 near the bow 2 is integrally connected with the bow 2. The sheet body 1 is welded by a steel material, and has a longitudinal skeleton structure, and the bottom layer has a double layer, which increases the strength. The width of the sheet 1 is nine meters, and the sheet 1 is a plurality of layers. There are 30 sets of steel strand lifting system 6 and evenly spaced to ensure uniform force; each set of steel strand lifting system 6 can increase the weight of 500 tons, reduce the draught of the immersed tube during transportation, and reduce the dredging of the channel. , saving engineering costs.

The sinking control system comprises a sinking vertical control system 4 and a sinking level control system 5, the sinking vertical control system 4 arrangement comprises six winches, two winches are arranged in the cabin of each connecting bridge 3; the sinking level control system 5 Including nine winches, three winches are distributed on the deck surface of each connecting bridge 3. The sinking control system can adjust the position of the immersed tube in the horizontal and vertical directions to ensure the accuracy of the position of the immersed tube, thereby ensuring the stability of the tunnel.

The lateral support system is a plurality of hydraulic cylinders which are evenly spaced. The hydraulic cylinder supports and fixes the side of the immersed pipe to ensure that the immersed pipe is firmly connected with the process vessel, and the immersed pipe is prevented from sloshing during transportation, so that the immersed pipe does not fall off.

A central control room 7 is disposed on the bow 2, and the sinking control system, the steel strand lifting system 6 and the lateral support system are electrically connected to the central control room 7. A propeller 8 is disposed at one end of the two sheets 1 away from the bow 2, and the propeller 8 is electrically connected to the central control chamber 7. A lateral propulsion mechanism 9 is provided on both sides of the bow 2, and the lateral propulsion mechanism 9 is electrically connected to the central control chamber 7.

A crane 11 is mounted on the hull. A railing 12 is provided on the edge of the hull and at the gap between the two connecting bridges 3 to provide a certain protection.

The dynamic positioning system is adopted on the engineering ship. There are eight anchoring and locating points 10 on the engineering ship to ensure the accuracy of the positioning of the engineering ship.

When using the above engineering ship to transport and install the sinking pipe, the specific steps are as follows:

The engineering ship is anchored in position, the immersed pipe is moved to the loading state and the cable is fixed, and the immersed pipe is pulled to the bottom of the engineering ship by the engineering ship and the shore winch, the ballasted engineering ship is installed, and the steel strand lifting system is installed. 6. Move the immersed tube steel strand lifting system 6 into the receiving tank of the engineering ship, connect the immersed pipe with the engineering ship, and discharge the ballast water of the engineering ship through the ballast system of the engineering ship to reduce the engineering ship. The draught, the immersed pipe is lifted along with the ship, the immersed pipe is fixed by the lateral support system, and the measuring tower is installed on the immersed pipe;

The engineering ship floats to the sinking area, the ballast works to the free-floating draught of the immersed pipe, connects the mooring line, lifts part of the steel strand lifting system 6, connects the sinking control system, and then lifts all the steel strand lifting system 6 The lateral support system is released, and the specific position of the immersed tube is adjusted by the sinking control system, placed in place, the sinking control system is released, and the engineering ship is idling back.

In this embodiment, the engineering vessel has a draught of 5.5 meters at no load and a ballasted engineering vessel to a draft of 10.4 meters. After the immersed tube is connected with the engineering vessel, the engineering vessel draughts 8.5 meters; after reaching the sinking area, the engineering vessel is pressed Loaded to draught 9.5 meters, lift four sets of steel strand lifting system 6, connect the vertical control system 4, continue to ballast the engineering ship to the steel strand lifting system 6 without force, at the same time, sink the vertical control system 4 slowly Forced, the entire steel strand lifting system 6 was released, and the engineering ship was placed in place by the sinking control system.

The above embodiments are merely illustrative of the basic principles and characteristics of the present invention, and the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. It is within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and their equivalents.

Claims

An engineering ship characterized by comprising:

a hull comprising two mutually symmetrically disposed sheets, a plurality of connecting bridges connected between the two sheets, the connecting bridge being provided with a sinking control system, and the plurality of sleeves are evenly distributed on the sheet body Steel strand lifting system;

a stern, which is connected to one end of two of the sheets, the stern is a curved enclosure structure, and a sump is formed between the stern and the two sheets, the accommodating groove A lateral support system is provided on the side wall.
The construction vessel according to claim 1, wherein the sheet body, the connecting bridge and the bow are integrally formed.
The construction vessel of claim 1 wherein said settling control system comprises a plurality of winches.
The construction vessel of claim 1 wherein said lateral support system is a plurality of evenly spaced hydraulic cylinders.
The engineering ship according to claim 1, wherein the ship is provided with a central control room, and the deposition control system, the steel wire lifting system and the lateral support system are electrically connected to the central control room. .
The engineering ship according to claim 5, wherein one end of the two sheets away from the bow is provided with a propeller, and the propeller is electrically connected to the central control chamber.
The construction vessel according to claim 5, wherein a lateral propulsion mechanism is disposed on both sides of the bow, and the lateral propulsion mechanism is electrically connected to the central control chamber.
A construction vessel according to any one of claims 1 to 7, wherein the sheet body is welded from a steel material.
An underwater vehicle transportation and installation method, using the engineering ship according to any one of claims 1-8, The characteristic is that the specific steps are:

The underwater object is pulled to the bottom of the engineering ship, and the engineering ship is ballasted, and the underwater object is moved into the receiving tank of the engineering ship, so that the underwater object is connected with the engineering ship, and the ballast water of the engineering ship is discharged. The underwater objects are upgraded along with the engineering ship;

The engineering ship floats to the installation area, and the ballast project ship goes to the free floating state of the underwater water to adjust the installation position of the underwater object, and the connection between the underwater object and the engineering ship is released, and the installation is put in place.
The underwater cargo transportation mounting method according to claim 9, wherein the underwater object is a immersed tube.