Engineering ship for seabed stone laying and ramming operation

Abstract

A seabed stone laying and ramming operation engineering ship is characterized in that a stone storage yard is arranged in the center of a main deck of the engineering ship, a stone commissioning vehicle is located in the stone storage yard, the two sides of the stone storage yard are each provided with an elephant trunk stone laying device and a vibration ramming device, and the elephant trunk stone laying devices and the vibration ramming devices are located on the broadside of the engineering ship; an articulated chute of the articulated chute stone paving equipment extends downwards to the seabed, a vibrating bar of the vibrating ramming equipment extends downwards to the seabed, and a distance exists between the articulated chute stone paving equipment and the vibrating ramming equipment. Three full-revolving propellers are arranged on the stern of the engineering ship side by side, and two side thrusters and a control device are arranged on the bow of the engineering ship. The engineering ship travels at a constant speed and performs stone paving and ramming operation at the same time, the operation needs to be stopped only when all stones in a stone storage yard are used up, the continuous operation of offshore stone paving and ramming is truly achieved, and the operation efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of offshore ship design and construction, and particularly relates to a seabed stone paving and ramming operation engineering ship. BACKGROUND

[0002] When laying a seabed tunnel or a seabed pipeline, paving and ramming are one of the indispensable processes.

[0003] The earliest paving and ramming operations were carried out by paving ships and ramming ships respectively, which had extremely low efficiency, and there were many construction ships at the same site, which needed to pay close attention to the collision avoidance operation between the ships, and there was a certain safety risk.

[0004] In recent years, the utility model patent with the authorization announcement number CN 210341935 U proposes a "filling and compacting integrated construction ship", which integrates paving equipment and ramming equipment on one ship, reduces the number of engineering ships at the construction site, and improves the construction safety. The utility model patent with the authorization announcement number CN 211621439 U proposes a "stone paving and ramming ship", and the utility model patent with the authorization announcement number CN 212772372 U proposes a "synchronous stone paving and ramming ship", which arranges the paving system and the ramming system on a track, further improving the efficiency of paving operation and ramming operation.

[0005] However, the current paving and ramming operation still has the following problems:

[0006] 1. The paving system and the ramming system are arranged on the deck track of the ship body, which improves the efficiency compared with the previous operation mode, but the paving system and the ramming system can only operate within the range of the track, and when exceeding the range of the track, the ship needs to be moved and repositioned, so the overall operation efficiency is still not high.

[0007] 2. The paving system and the ramming system run on the track, which has very high requirements for the strength, flatness and parallelism of the track. In the marine environment with high humidity and high salinity, the track is prone to corrosion, and a large amount of continuous high-cost maintenance is needed to maintain its flatness and parallelism to meet the requirements. Excessive corrosion may affect the strength of the track and cause safety hazards.

[0008] 3. Since the ship body is in a rocking motion state at sea at all times, the equipment running on the track is prone to jamming, which has certain potential dangers. SUMMARY

[0009] To solve the above problems, the present application provides a seabed paving and ramming operation engineering ship, which adopts the technical scheme of:

[0010] A kind of seabed stone paving and tamping operation engineering ship, the main deck center of engineering ship is provided with stone yard, stone yard is provided with fence, the height H of fence is between 1.5 m to 2.5 m, stone delivery vehicle is located in stone yard.

[0011] Stone yard both sides, each is provided with one chute paving stone equipment and one vibration tamping equipment, chute paving stone equipment and vibration tamping equipment are located in the side of engineering ship, the distance K of chute paving stone equipment end to stone yard fence, 1m≤K≤2m, the chute of chute paving stone equipment extends to seabed, the vibration rod of vibration tamping equipment extends to seabed, the interval G between chute paving stone equipment and vibration tamping equipment is greater than or equal to 10m.

[0012] Engineering ship stern is provided with three full rotation propellers, bow is provided with two side thrust devices and control device, three full rotation propellers are side by side along the width direction of engineering ship, in the condition of 4 level sea, the propulsion speed of middle full rotation propeller is consistent with stone paving and tamping operation speed, the maximum holding thrust Fs of two side thrust devices is not less than 20t, the maximum holding thrust Fq of two side full rotation propellers is not less than 60t, the output thrust Fa of bow side thrust device is less than or equal to Fs.

[0013] The above-mentioned seabed stone paving and tamping operation engineering ship, further, the fence is provided with reinforcing bars every 1.8 meters.

[0014] The above-mentioned seabed stone paving and tamping operation engineering ship, further, the stone delivery vehicle is at least two, and at least one stone delivery vehicle is arranged on each of the two sides of the engineering ship.

[0015] The above-mentioned seabed stone paving and tamping operation engineering ship, further, the vibration tamping equipment is arranged near the stern of the ship, and the chute paving stone equipment is arranged near the bow of the ship.

[0016] The above-mentioned seabed stone paving and tamping operation engineering ship, further, the full rotation propeller on the two sides is provided with a fairing.

[0017] The above-mentioned seabed stone paving and tamping operation engineering ship, further, the propulsion speed of the middle full rotation propeller and the stone paving and tamping operation speed are not greater than 0.1 m / s.

[0018] The advantages of the present application are:

[0019] 1The engineering ship of the present application drives at a constant speed while performing stone paving and tamping operation, and only needs to stop operation when all the stones in the stone yard are used up, truly realizing continuous operation of offshore stone paving and tamping, and greatly improving the operation efficiency.

[0020] 2 The pipe laying and vibrating compacting equipment are fixedly installed on the main deck of the ship body, and do not need tracks, thereby saving high track construction and maintenance costs and avoiding safety risks caused by track traveling mechanisms.

[0021] 3 The ship body speed and direction are innovatively matched with the pipe laying and compacting operations, thereby providing a reference for innovative design of other engineering ships. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of an engineering ship of the present application (side view);

[0023] Figure 2 is a schematic diagram of an engineering ship of the present application (top view);

[0024] Figure 3 is a schematic diagram of a pipe laying and vibrating compacting equipment (side view);

[0025] Figure 4 is a schematic diagram of a pipe laying and vibrating compacting equipment (side view);

[0026] Figure 5 is a schematic diagram of an engineering ship propulsion and positioning system of the present application (top view);

[0027] Figure 6 is a schematic diagram of an engineering ship positioning force analysis example of the present application (top view, 2×Fs≥Cy);

[0028] Figure 7 is a schematic diagram of an engineering ship positioning force analysis example of the present application (top view, 2×Fs≥Cy);

[0029] Wherein: 1-ship body, 2-stone yard, 2-1-yard fence, 2-2-stone feeding vehicle, 3-stone laying pipe equipment, 3-1-laying pipe, 4-vibrating ramming equipment, 5-full rotation propeller, 6-bow thruster, A-sea bottom, B-stone, C-environmental force, Cx-component of environmental force on the heading of the engineering ship, Cy-component of environmental force on the vertical direction of the heading of the engineering ship, E-the size and direction of the thrust of the two full rotation propellers at the left and right of the ship body, W-sea surface, H-height of the stone yard fence, K-distance from the end of the stone laying pipe equipment to the stone yard fence, G-distance between the center of the stone laying pipe equipment and the center of the vibrating ramming equipment, Vt-propelling speed of the No.2 full rotation propeller, Fs-maximum holding thrust of the No.1 bow thruster and the No.2 bow thruster, Fa-actual holding thrust of the No.1 bow thruster and the No.2 bow thruster, Fq-maximum holding thrust of the No.1 full rotation propeller and the No.3 full rotation propeller, Fb-actual holding thrust of the No.1 full rotation propeller and the No.3 full rotation propeller, a-rotation angle of the No.1 full rotation propeller and the No.3 full rotation propeller, Fbx-component of the actual holding thrust of the No.1 full rotation propeller and the No.3 full rotation propeller on the running direction of the ship, Fby-component of the actual holding thrust of the No.1 full rotation propeller and the No.3 full rotation propeller on the vertical direction of the running direction of the ship. DETAILED DESCRIPTION

[0030] The present application is further described in conjunction with the accompanying drawings.

[0031] An engineering ship for sea bottom stone laying and ramming operation, as shown in Figure 1 , 2 , a stone yard is arranged at the center of the main deck of the engineering ship, the stone yard is provided with a fence, the height H of the fence is between 1.5m and 2.5m, and a stone feeding vehicle is arranged in the stone yard.

[0032] A stone laying pipe equipment and a vibrating ramming equipment are arranged at the two sides of the stone yard respectively, the stone laying pipe equipment and the vibrating ramming equipment are arranged at the ship side of the engineering ship, the distance K from the end of the stone laying pipe equipment to the stone yard fence is 1m≤K≤2m, the laying pipe of the stone laying pipe equipment extends downward to the sea bottom, and the vibrating rod of the vibrating ramming equipment extends downward to the sea bottom.

[0033] The ship body serves as a carrier to provide necessary personnel, power, space and the like for the stone laying and ramming operation. The ship body is a steel sea ship, which contains deck machinery, living tower, guide equipment, fire-fighting equipment, life-saving equipment, engine room, pump room, ballast tank, fuel tank, fresh water tank, oily water tank, cable pipeline and other conventional ship required equipment and systems. The above-mentioned equipment and systems contained in the ship body are necessary for conventional engineering ships, and are conventionally configured, which are not described in detail, and the conventional equipment is not shown in the drawings for the purpose of clearly showing the relevant equipment of the present application.

[0034] The middle part of the main deck of the ship body is a stone yard for storing stones, including a yard fence and a stone feeding truck. The yard fence is a plate frame structure composed of angle steel and steel plates, and a reinforcing rib is arranged every 1.8 meters. The height H of the yard fence should be between 1.5m and 2.5m, that is, 1.5m≤H≤2.5m, and the optimal height is 2m, as shown in Figure 1 If the height H of the yard fence is less than 1.5m, the capacity of the stone yard will be reduced, and if the height H of the yard fence is greater than 2.5m, the driver's view will be blocked.

[0035] There are at least two stone feeding trucks, each of which is dedicated to serving a side of the chute stone laying equipment, and is fixed in the stone yard near the chute stone laying equipment when not in operation, as shown in Figure 2

[0036] There are two chute stone laying equipments, which are arranged on the left and right sides of the main deck of the ship body near the bow, and the chute is outside the side of the ship body, and the length can be adjusted according to the needs to adapt to the operation requirements of different water depths, as shown in Figure 3

[0037] The distance K from the end of the chute stone laying equipment to the yard fence should not be greater than 2m, nor less than 1m, that is, 1m≤K≤2m. If the distance K is greater than 2m, the chute stone laying equipment will be too far from the stone yard, increasing the difficulty of operation of the stone feeding truck, and even causing the stone feeding truck to be unable to feed stones into the chute stone laying equipment; if the distance K is less than 1m, the space for personnel to pass through and the maintenance space of the chute stone laying equipment will be too small.

[0038] There are two vibrating ramming equipment, which are arranged on the left and right sides of the main deck of the ship body near the stern, behind the chute stone laying equipment, to carry out ramming operation after stone laying, so that the stone laying operation and the ramming operation are continuous. Similarly, the vibrating ramming equipment can be adjusted in length according to the needs to adapt to the operation requirements of different water depths, as shown in Figure 4

[0039] The distance G from the center of the chute stone laying equipment to the center of the vibrating ramming equipment should not be less than 10m, that is, G≥10m, as shown in Figure 1 If the distance G is less than 10m, the stone debris generated during the ramming operation of the vibrating ramming equipment may hit the chute stone laying equipment, causing damage to the latter.

[0040] The propulsion and positioning system includes three azimuth thrusters, two bow thrusters and a control device, wherein the three azimuth thrusters are installed at the left, middle and right positions below the waterline of the stern of the ship body, from left to right, they are No. 1 azimuth thruster, No. 2 azimuth thruster and No. 3 azimuth thruster; the bow thrusters are installed in the area below the waterline of the bow of the ship body, from the bow, they are No. 1 bow thruster and No. 2 bow thruster, as shown in Figure 5 .​​​

[0041] The full-revolution propeller in the middle of the tail (No. 2 full-revolution propeller) has no fairing and functions to push the ship body to move forward (or backward); the two full-revolution propellers on the left and right of the tail (No. 1 full-revolution propeller and No. 3 full-revolution propeller) have fairings and cooperate with the two bow side thrusters at the bow to perform positioning operation of the engineering ship.

[0042] The pushing speed Vt of the No. 2 full-revolution propeller is consistent with the paving stone and tamping operation speed of the engineering ship of the application and should not be greater than 0.1 m / s, i.e. Vt≤0.1 m / s, so as to ensure sufficient operation time for the paving stone operation and tamping operation.

[0043] The maximum holding thrust of the No. 1 bow side thruster and the No. 2 bow side thruster is the same, both being Fs. The size of Fs is related to the size of the engineering ship of the application and the operation environment condition: taking the engineering ship with a length of 110 m and a width of 40 m as an example, under the condition of sea state 4, Fs is not less than 20 t. The action direction of Fs is perpendicular to the running direction of the engineering ship of the application, including perpendicular upward and perpendicular downward. As shown in the figure. Figure 5

[0044] The maximum holding thrust of the No. 1 full-revolution propeller and the No. 3 full-revolution propeller is the same, both being Fq. The size of Fs is related to the size of the engineering ship of the application and the operation environment condition: taking the engineering ship with a length of 110 m and a width of 40 m as an example, under the condition of sea state 4, Fq is not less than 60 t. The full-revolution propeller can rotate 360°, so the action direction of Fq can be changed arbitrarily by 360°. As shown in the figure. Figure 5

[0045] The No. 1 bow side thruster, the No. 2 bow side thruster, the No. 1 full-revolution propeller and the No. 3 full-revolution propeller are used to position the engineering ship of the application, by adjusting the size of Fs, the size and direction of Fq, resisting the environmental load, so that the engineering ship of the application can run at a speed not greater than Vt in the operation sea area under the pushing of the No. 2 full-revolution propeller, thereby providing a stable operation environment for the paving stone and tamping operation. As shown in the figure. Figure 5

[0046] The control device can monitor the environmental conditions of the operation sea area, including wind speed, wind direction, wave height, wave direction, flow speed and flow direction. And according to the above environmental conditions, the size of the output thrust Fa of the bow side thruster (Fa≤Fs) and the size and direction of the maximum holding thrust Fb of the No. 1 full-revolution propeller and the No. 3 full-revolution propeller (Fb≤Fq) are controlled, and the resultant force of Fa and Fb is balanced with the environmental force.​​​

Claims

1. A seabed stoning and tamping operations vessel, characterized in that, The main deck center of the engineering ship is provided with a stone stockyard, the stone stockyard is provided with a fence, the height H of the fence is between 1.5m and 2.5m, and a stone feeding vehicle is located in the stone stockyard; On both sides of the stone stockyard, one chute stone laying device and one vibrating ramming device are arranged, the chute stone laying device and the vibrating ramming device are located on the side of the engineering ship, the distance K from the end of the chute stone laying device to the fence of the stone stockyard is 1m≤K≤2m, the chute of the chute stone laying device extends downward to the seabed, the vibrating rod of the vibrating ramming device extends downward to the seabed, and the distance G between the chute stone laying device and the vibrating ramming device is G≥10m; Three full-rotation propellers are arranged at the stern of the engineering ship, two side thrust devices and control devices are arranged at the bow of the engineering ship, and the three full-rotation propellers are arranged side by side along the width direction of the engineering ship.

2. A seabed stoning and tamping operations vessel according to claim 1, characterized in that The fence is provided with a reinforcing rib every 1.8m.

3. A seabed stoning and tamping operations vessel according to claim 1, characterized in that The stone feeding vehicle is at least two, and at least one stone feeding vehicle is arranged on each side of the engineering ship.

4. A seabed stoning and tamping operations vessel according to claim 1, characterized in that The vibrating ramming device is arranged close to the stern of the ship, and the chute stone laying device is arranged close to the bow of the ship.

5. A seabed stoning and tamping operations vessel according to claim 1, characterized in that The full-rotation propellers on both sides are provided with a fairing.

6. A seabed stoning and tamping operations vessel according to claim 1, characterized in that The propelling speed of the full-rotation propeller in the middle and the stone laying and ramming speed are not greater than 0.1m / s.

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