CN104843147A - Underwater excavation system construction of sand pump vessel guided and located by steel ropes - Google Patents

Abstract

The invention discloses an underwater excavation system for a steel cable guiding and positioning sand pumping ship, which is characterized in that the system consists of a positioning steel cable 1 fixed at both ends of the bank, a sand pumping ship 3 for sand pumping and excavation in water, and a fixed It consists of a capstan 2 connected with a positioning cable on the hull of the sand pumping ship. During sand pumping and excavation, the sand pumping ship moves and locks in parallel along the cable guide, and the sand pumping faucet 4 connected to the sand pumping pipe 5 on the ship carries out sand pumping and excavation operations within the movable range sideline and sideline 6. The excavation system can be combined in a variety of ways to adapt to different working conditions on site. According to the size and quantity of the sand pumping ship, the range that the sand pumping bridle can cover on the ship, and the requirements of the construction period, it is flexibly determined that the system is guided by a steel cable and positioned by a A sand pumping ship constitutes a system, or a system is composed of multiple sand pumping ships guided and positioned correspondingly by multiple steel cables. The system is flexible in combination and easy to operate. It can truly fix the position of the hull in water, effectively prevent under-excavation, missing excavation and repeated excavation, and greatly improve the excavation efficiency.

Description

Construction of underwater excavation system for cable-guided and positioned sand pumping vessel

technical field

The invention relates to the technical field of underwater excavation construction, in particular to the construction of an underwater excavation system for a steel cable-guided and positioned sand pumping ship.

Background technique

In water conservancy projects, road and bridge projects, port and navigation projects, and river dredging projects, it is often encountered that methods such as group well dewatering and caisson drainage cannot be used, and water needs to be carried out for underwater excavation construction. The most commonly used excavation tool is pumping The sand ship uses the on-board water pump to pump the water near the bottom, and uses the high-speed water flow to take away the underwater medium. Since the anchor is used to position the hull of the sand pumping ship on water during the operation, and the anchor is connected to the hull by a flexible steel cable. This traditional positioning method cannot ensure that the hull is truly stationary relative to the bottom of the water. There are problems such as over-excavation, under-excavation and repeated excavation in underwater sand pumping excavation, which seriously affects the construction efficiency of sand pumping excavation.

In addition, the operation of moving the hull with the anchor to the hull positioning method is complicated, and the anchoring and anchoring operations are required every time the hull is moved, and the work efficiency is low.

Contents of the invention

The invention provides an underwater excavation system for a steel cable-guided and positioned sand pumping ship, which can overcome the problems of over-excavation, under-excavation and repeated excavation, and improve the construction efficiency of sand pumping and excavation. .

The technical scheme adopted in the present invention is:

An underwater excavation system for a cable-guided and positioned sand pumping ship is characterized in that the system consists of a positioning steel cable fixed at both ends on the shore, a sand pumping ship for sand pumping and excavation in water, and a sand pumping ship fixed on the hull of the sand pumping ship It consists of a winch connected with a positioning cable. During sand pumping and excavation, the sand pumping ship moves in parallel along the cable guide and locks, and the sand pumping tap connected to the sand pumping pipe on the ship carries out sand pumping and excavation operations within the sideline of the movable range.

In the excavation system, the guiding and positioning cables need to be straightened, and the two ends are respectively fixed on both sides of the bank corresponding to the water area where excavation is required.

The sand pumping ship connects and guides the steel cable through the winch fixed on the hull of the sand pumping ship, and moves parallelly along the cable guide.

The sand pumping and excavation operation area of the sand pumping ship is the water area between the steel cable and the maximum distance that the sand pumping bridle can move to the stern.

The excavation system can be combined in various ways to adapt to different working conditions on site. The system can be composed of one steel cable guiding and positioning one sand pumping ship, or it can be composed of multiple steel cables guiding and positioning corresponding multiple sand pumping ships.

The number of sand pumping ships in the system can be flexibly determined according to factors such as the size and quantity of the sand pumping ship hull, the range that can be covered by the movement of the sand pumping tap on the ship, and the requirements of the construction period.

Compared with prior art, the beneficial effect of the present invention is:

1. In the present invention, the two ends are respectively fixed on the two sides of the cable to guide and lock the position of the hull in the water, which can ensure that the hull moves along the line guided by the steel cable. In the static state, it can effectively prevent under-excavation, missed excavation and repeated excavation, and greatly improve the efficiency of sand pumping and excavation.

2. The present invention can adapt to different working conditions on site and be flexibly combined, and the operation is simple. The number of sand pumping ships in the system can be flexibly determined according to factors such as the size and quantity of the sand pumping ship hull, the range that can be covered by the movement of the sand pumping tap on the ship, and the construction period requirements.

Description of drawings

Figure 1 is a schematic diagram of the composition of the underwater excavation system of the cable-guided and positioned sand pumping vessel;

Fig. 2 is a schematic diagram of an underwater excavation system composed of four sand pumping ships.

Detailed ways

The system is composed of a positioning steel cable (1) with both ends fixed to the shore, a sand pumping ship (3) for pumping sand in water and excavating, and a winch (2) fixed on the hull of the sand pumping ship and connected with the positioning steel cable. During sand pumping and excavation, the sand pumping ship (3) moves parallelly along the steel cable (1) and locks, and the sand pumping tap (4) connected to the sand pumping pipe (5) on the ship is at the sideline of the movable range (6) Sand pumping and excavation operations are carried out.

In the excavation system, the guiding and positioning steel cables (1) need to be straightened, and the two ends are respectively fixed on both sides of the bank corresponding to the water area to be excavated.

The sand pumping ship (3) connects and guides the steel cable (1) through the capstan (2) fixed on the hull of the sand pumping ship, and moves parallelly along the steel cable (1) guide.

The sand pumping excavation operation area of the sand pumping ship (3) is the water area between the steel cable (1) and the maximum distance that the sand pumping tap (4) can move to the stern.

The excavation system can be combined in various ways to adapt to different working conditions on site. A system can be formed by guiding and positioning one sand pumping ship (3) by one steel cable (1), or by guiding and positioning a plurality of sand pumping ships (3) correspondingly by multiple steel cables (1).

The number of sand pumping ships in the system can be flexibly determined according to factors such as the size and quantity of the sand pumping ships (3), the range that can be covered by the operation movement of the sand pumping tap (4) on board, and the construction period requirements.

Embodiment one: the present invention that is formed with 1 positioning steel cable and 1 sand pumping ship

The invention is composed of a guiding and positioning steel cable (1) and a sand pumping ship (3) connected by a capstan (2) fixed on the sand pumping ship hull. That is to say, the system consists of a positioning cable (1) with both ends fixed to the shore, a sand pumping ship (3) for sand pumping and excavation in water, and a winch (2) fixed on the hull of the sand pumping ship and connected to the positioning cable . During sand pumping and excavation, the sand pumping ship (3) moves parallelly along the steel cable (1) and locks, and the sand pumping tap (4) connected to the sand pumping pipe (5) on the ship is at the sideline of the movable range (6) Sand pumping and excavation operations are carried out.

Embodiment two: the present invention that forms with 4 guiding, positioning steel cables and 4 sand pumping ships

When the hull is small or the excavation area is large, in order to improve the excavation efficiency, multiple sand pumping ships (3) can be used to form a system. In this example, 4 guiding and positioning cables (1) and 4 sand pumping ships (3 ) are connected to form a system through winches (2) fixed on the hull of the sand pumping vessel. That is to say, the system consists of 4 positioning steel cables (1) with both ends fixed to the shore, 4 sand pumping ships (3) for excavating sand in water, and a winch (2) fixed on the hull of the sand pumping ship and connected to the positioning steel cables . Determine the distance between the positioning steel cables (1) according to the sand pumping excavation area of the sand pumping ship (3). During sand pumping and excavation, the sand pumping ship (3) moves and locks in parallel along the guide of the steel cable (1), 1# Ship and 2# ship, 2# ship and 3# ship, 3# ship and 4# ship are in misaligned positions, and the sand pumping tap (4) connected to the sand pumping pipe (5) on the ship is at the sideline of the movable range (6) Sand pumping and excavation operations are carried out within the machine without interfering with each other, which effectively prevents under-excavation, missed excavation and repeated excavation, and speeds up the excavation.

Claims (6)

1. cable wire guiding, a location sand pump dredger wet excavation System's composition, is characterized in that: system is fixed in the location cable wire (1) on bank, water to take out sand pump dredger (3) that sand excavates and be fixed on the capstan winch (2) sand pump dredger hull connecting location cable wire by two ends and formed.When taking out sand excavation, sand pump dredger (3) moves along cable wire (1) directed parallel, locks, and ship is taken out the sand halter (4) of taking out that sandpipe (5) connects and carries out taking out the operation of sand excavation in the scope sideline (6) be movable to.

2. a kind of cable wire location according to claim 1 sand pump dredger wet excavation System's composition, in excavation system, guiding, location cable wire (1) need stretching, and two ends are separately fixed at the both sides, bank needing excavation operation waters corresponding.

3. a kind of cable wire location sand pump dredger wet excavation System's composition according to claim 1 and 2, sand pump dredger (3) connects guiding, location cable wire (1) by the capstan winch (2) be fixed on sand pump dredger hull, and moves along cable wire (1) directed parallel.

4. a kind of cable wire location according to claim 1 sand pump dredger wet excavation System's composition, it is cable wire (1) to the waters between the ultimate range of taking out sand halter (4) and be movable to stern that sand pump dredger (3) takes out sand excavation operating area scope.

5. a kind of cable wire location according to claim 1 sand pump dredger wet excavation System's composition, excavation system multiple combination mode can adapt to on-the-spot different operating mode.Can be led by a cable wire (1), locate sand pump dredger (3) construction system, also can be led by many cable wires (1), locate corresponding multiple stage sand pump dredger (3) construction system.

6. a kind of cable wire location sand pump dredger wet excavation System's composition according to claim 1 and 5, system sand pump dredger quantity can move the factors such as the scope that can cover and construction period and determines flexibly according to sand pump dredger (3) hull size, quantity, ship being taken out sand halter (4) operation.