Dredger with detachable mud cabin functional unit

Abstract

The dredger comprises a main hull tail module, a main hull head module and a mud cabin function area used for carrying the mud cabin function unit, the main hull tail module and the main hull head module are divided by taking a transverse box type bulkhead as a boundary, and the transverse box type bulkhead is arranged between the main hull tail module and the main hull head module; a plurality of detachable mud cabin function units are arranged in the mud cabin function area, and each mud cabin function unit is provided with at least one mud channel door capable of being opened and closed and enabling mud in the mud cabin function area to enter the mud cabin function unit. According to the invention, the dredger can realize quick assembly and disassembly functions of a plurality of dredger cabin functional units, uninterrupted operation is realized by replacing the dredger cabin functional units, the silt transfer efficiency of dredging is improved, and the demand on the number of dredgers in ultra-long-distance operation is reduced. The mud cabin function units are mutually independent, maintenance is convenient, and the effective operation time is prolonged.

Description

Technical Field

[0001] The invention relates to a dredging ship with a detachable mud tank functional unit, belonging to the technical field of ship design and manufacturing. Background Art

[0002] In recent years, in order to cooperate with the sustainable and stable development of the national economy and meet the needs of river water conservancy flood control and dredging, port dredging, land reclamation, and deep-sea island and reef development, large dredgers, as representatives of high-tech dredging equipment, have been continuously undergoing technological iterations and upgrades, with a significant trend towards larger scale.

[0003] The dredging industry is in urgent need of a dredger design that can accommodate a variety of operating scenarios such as deep-sea operations and short-distance operations, while also being quick to dispatch and flexible in configuration.

[0004] The existing dredger design has the following deficiencies:

[0005] Dredgers with integrated mud tank design are at a disadvantage in terms of transportation efficiency, and dredgers without mud tanks are applicable to a narrow range of engineering projects. For ultra-long-distance large-scale sand filling operations, the dredger's transportation time is much longer than the sand dredging time, which cannot meet the new requirements of ultra-large dredgers in terms of reducing investment and operating costs, efficient production, high autonomy, high operability, high flexibility, technological innovation and environmental friendliness.

[0006] In order to maximize the efficiency of dredging operations and reduce the number of dredgers required, dredgers are often combined with barges. At the same time, dredgers with no mud compartment design, such as mud compartment-less well dredgers and mud compartment-less slot dredgers, have also been proposed. However, the use of mud compartment-less dredgers has certain limitations. Barge siding and barge loading operations require high sea conditions and are only suitable for long-distance sand extraction. Therefore, they remain at the conceptual stage.

[0007] In addition, the integrated mud tank section is mainly a plate frame structure, and the entire mud tank section is manufactured as a whole. The mud door arrangement type and mud tank capacity of the mud tank are determined after the plan is determined. The installation, maintenance and replacement of mud doors in the mud tank section are relatively difficult, and the subsequent modification and change of mud door arrangement and mud tank carrying capacity are costly.

[0008] Finally, due to the overall penetration of the mud tank section, the unevenness of the mud density causes the structural stress around the mud tank to change continuously, and the alternating loads and low-cycle fatigue damage in the key areas require additional structural reinforcement. The integral mud tank bulkhead is subjected to mud wear for a long time during the loading and unloading operation, and subsequent plate replacement and maintenance are difficult. Summary of the invention

[0009] The technical problems to be solved by the present invention are: the existing integrated mud tank design of conventional dredgers is at a disadvantage in terms of shipping efficiency, and the mud doors of the mud tank sections are difficult to assemble, repair and replace; the alternating loads and low-cycle fatigue damage problems in the key areas around the mud tank are more difficult to deal with; the integral mud tank bulkhead is subjected to mud wear for a long time during loading and unloading operations, and subsequent plate replacement and maintenance are difficult.

[0010] In order to solve the above technical problems, the technical solution of the present invention is to provide a dredger with a detachable mud tank functional unit, characterized in that it comprises a main hull stern module, a main hull bow module and a mud tank functional area for carrying the mud tank functional unit divided by a transverse box-type bulkhead, the transverse box-type bulkhead is arranged between the main hull stern module and the main hull bow module; a plurality of detachable mud tank functional units are arranged in the mud tank functional area, and each mud tank functional unit is provided with at least one openable and closable mud channel door for allowing the mud in the mud tank functional area to enter the mud tank functional unit.

[0011] Preferably, the mud tank functional area is divided into a plurality of mud tank functional unit placement areas for placing mud tank functional units; and each mud tank functional unit placement area is communicated with each other.

[0012] Preferably, each of the mud tank functional unit placement areas is surrounded by a double-layer side structure, a double-layer bottom structure, a transverse box-type bulkhead and a longitudinal box-type bulkhead. The transverse box-type bulkheads are evenly arranged along the length of the ship. The double-layer side structure, two adjacent transverse box-type bulkheads and the longitudinal box-type bulkheads form the side walls of the mud tank functional unit placement area. A supporting positioning structure for supporting the mud tank functional unit and matching the bottom of the mud tank functional unit is provided at the bottom of the mud tank functional unit placement area, and the supporting positioning structure is provided on the double-layer bottom structure.

[0013] Preferably, the supporting and positioning structure comprises a bottom inclined plate of the mud tank frame and a central inclined plate of the bottom of the mud tank frame, and the bottom inclined plate of the mud tank frame, the central inclined plate of the bottom of the mud tank frame and the double-bottom inner bottom plate of the double-bottom structure form the bottom of the mud tank functional unit placement area; the inclination angle of the bottom inclined plate of the mud tank frame is consistent with the inclination angle of the transverse bottom inclined plate of the mud tank functional unit, and the inclination angle of the bottom central inclined plate is consistent with the inclination angle of the longitudinal bottom inclined plate of the mud tank functional unit.

[0014] Preferably, at least one mud tank passage door is provided on the inner wall of each mud tank functional unit placement area, and the openable and closable mud passage door of each mud tank functional unit corresponds to a mud tank passage door of the mud tank functional unit placement area where the mud tank functional unit is located.

[0015] Preferably, two slide rail positioning and locking modules are provided on opposite sides of the inner wall of each mud tank functional unit placement area, and two slide rails are provided on opposite sides of the mud tank functional unit, and the positions and sizes of the slide rail positioning and locking modules correspond to those of the slide rails; through the matching of the slide rail positioning and locking modules with the slide rails, the mud tank functional unit is guided and moved up and down in the mud tank functional unit placement area.

[0016] Preferably, the upper end surface of the slide rail positioning and locking module is flush with the main deck, and the distance between the two slide rail positioning and locking modules is between 1 / 3 and 1 / 2 of the width of the mud tank functional unit.

[0017] Preferably, the longitudinal box-type bulkhead divides the mud tank functional area into a left mud tank functional unit frame and a right mud tank functional unit frame, and the longitudinal box-type bulkhead is arranged between the left mud tank functional unit frame and the right mud tank functional unit frame; the transverse box-type bulkheads are evenly arranged along the length of the ship, and the spacing distance of the net space enclosed between any two transverse box-type bulkheads is the spacing of the mud tank functional units including the gap; the longitudinal box-type bulkheads and the transverse box-type bulkheads are cross-arranged; the left mud tank functional unit frame and the right mud tank functional unit frame are divided into a plurality of mud tank functional unit placement areas.

[0018] Preferably, mud tank access doors are provided on both the transverse box-type bulkhead and the longitudinal box-type bulkhead, and the distance between the mud tank access doors on the longitudinal box-type bulkhead is the distance between two adjacent transverse box-type bulkheads; the distance between the mud tank access doors on the transverse box-type bulkhead is 0.5 times the distance between a side plate of the longitudinal box-type bulkhead close to the side and the inner longitudinal bulkhead of the double-layer side structure.

[0019] Preferably, the front end of the mud tank functional area is located at the rear bulkhead of the bow pump cabin, and the rear end is located at the front wall of the engine room. The rear bulkhead of the bow pump cabin and the front wall of the engine room are both configured as transverse box-type bulkheads.

[0020] The overall layout and design of the main hull of the present invention, except for the central mud tank section, are similar to those of traditional dredgers, and the mature design experience of traditional dredgers can be used. The difference from traditional dredgers is that the strength of the longitudinal and transverse bulkheads in the mud tank section of the main hull needs to be particularly strengthened; the area inside the mud tank section of the main hull carrying the mud tank functional unit adopts a box-type frame structure.

[0021] The present invention enables a dredger to realize the rapid assembly and disassembly functions of multiple mud tank functional units. By replacing the mud tank functional units, uninterrupted operation can be achieved, the efficiency of mud and sand transportation during dredging can be improved, and the demand for the number of dredgers in ultra-long transportation distance operations can be reduced. At the same time, the mud tank functional units are flexibly configured to meet the requirements of different dredged soils and control the suspension and diffusion range of mud and sand during operation. The mud tank functional units are independent of each other, convenient for maintenance, and increase the effective operation time.

[0022] The dredging ship with a detachable mud tank functional unit of the present invention has strong scalability, low price, and can be flexibly combined, configured, maintained and replaced, which is conducive to meeting new operational needs of the industry and promoting sustainable development and innovation of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of a dredger with a detachable mud tank functional unit;

[0024] Figure 2 A bottom plan view of a dredger with a detachable mud tank functional unit;

[0025] Figure 3 The figure is a top plan view of a dredging vessel with a detachable mud tank functional unit;

[0026] Figure 4 is a schematic diagram of a transverse box bulkhead;

[0027] Figure 5 is a schematic diagram of a longitudinal box bulkhead;

[0028] Figure 6 Schematic diagram of the mud tank functional unit. DETAILED DESCRIPTION

[0029] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0030] The present invention provides a dredger with a detachable mud tank functional unit, which can realize the rapid and flexible assembly and disassembly of the mud tank functional unit. Figure 1 to Figure 2 As shown, the present invention uses the transverse box-shaped bulkhead 4 as the boundary to divide the main hull stern module 1, the main hull bow module 2 and the mud tank functional area 3 for carrying the mud tank functional unit 8. The mud tank functional area 3 is located between the main hull stern module 1 and the main hull bow module 2. The longitudinal box-shaped bulkhead 11 divides the mud tank functional area 3 into a left mud tank functional unit frame 9 and a right mud tank functional unit frame 10. Among them, the transverse box-shaped bulkhead 4 is arranged between the main hull stern module 1 and the main hull bow module 2. The longitudinal box-shaped bulkhead 11 is arranged between the left mud tank functional unit frame 3 and the right mud tank functional unit frame 9.

[0031] The mud tank functional unit frame of the present invention has a plurality of box-type bulkhead structures distributed continuously. In order to facilitate the loading of the mud tank functional unit 8, the mud tank functional unit frame (i.e., the left mud tank functional unit frame 9 and the right mud tank functional unit frame 10) mainly adopts a box-type bulkhead frame, and the mud tank functional unit frame includes a double-layer side structure 15, a transverse box-type bulkhead 4, a longitudinal box-type bulkhead 11, and a mud tank frame bottom inclined plate 13 and a mud tank frame bottom central inclined plate 14 arranged between the box-type bulkhead (i.e., the transverse box-type bulkhead 4, the longitudinal box-type bulkhead 11) and the double bottom inner bottom plate 12 of the double bottom structure 5.

[0032] like Figure 1 , Figure 2 , Figure 5 As shown, the inclination angle of the bottom inclined plate 13 of the mud tank frame is about 30° to 60°, which is consistent with the inclination angle of the transverse bottom inclined plate 27 of the mud tank functional unit 8. The uppermost section of the bottom inclined plate 13 of the mud tank frame must be provided with a strong support structure at a horizontal position inside the transverse box-shaped bulkhead 4, and the lowermost end must be provided with a strong support structure in both the transverse and longitudinal directions, such as ribs, girders, bulkheads, etc.

[0033] The front end of the mud tank functional unit frame is located at the rear bulkhead of the bow pump cabin 16 , and the rear end is located at the front wall of the engine room 17 . The rear bulkhead of the bow pump cabin 16 and the front wall of the engine room 17 are both set as transverse box-type bulkheads 4 .

[0034] The main bodies of the left mud tank functional unit frame 9 and the right mud tank functional unit frame 10 are box-type bulkhead frame structures. In order to enable the mud tank functional unit 8 to simultaneously meet the needs of independent loading and connection work, mud tank passage doors 7 are provided on the transverse box-type bulkhead 4 and the longitudinal box-type bulkhead 11. Figure 3 , Figure 4 As shown, the distance between the mud tank access doors 7 on the longitudinal box bulkhead 11 is the distance between two adjacent transverse box bulkheads 4. The distance between the mud tank access doors 7 on the transverse box bulkhead 4 is 0.5 times the distance between the side plate of the longitudinal box bulkhead 11 on the side of the ship and the inner longitudinal bulkhead of the double-layer side structure 15.

[0035] The mud tank passage door 7 is mainly used to achieve the connection operation of the mud tank functional unit 8 when the mud tank functional unit 8 opens the openable and closable mud passage door. The number and size of the mud tank passage door 7 can be flexibly adjusted according to the size of the mud tank functional unit 8.

[0036] The transverse box-shaped bulkheads 4 are evenly arranged along the length of the ship, and the spacing distance between the net spaces enclosed by two transverse box-shaped bulkheads 4 is the spacing of the mud tank functional units 8 including the gaps.

[0037] like Figures 3 to 5 As shown, the left mud tank functional unit frame 9 and the right mud tank functional unit frame 10 are each divided into a plurality of mud tank functional unit placement areas 6 for placing mud tank functional units 8. Two slide rail positioning and locking modules 18 are respectively provided on both sides of the transverse box-shaped bulkhead 4, and the upper end surface of the slide rail positioning and locking module 18 is flush with the main deck 19, and the distance between the two slide rail positioning and locking modules 18 is between 1 / 3 and 1 / 2 of the width of the mud tank functional unit 8.

[0038] Among them, the double-layer side structure 15 on the ship side, the transverse box-shaped bulkheads 4 on the front and rear sides, and the middle longitudinal box-shaped bulkheads 11 surround the side walls of the mud tank functional unit placement area 6 in the mud tank functional unit frame, and the double-layer bottom inner bottom plate 12, the mud tank frame bottom inclined plate 13, and the mud tank frame bottom central inclined plate 14 form the bottom of the mud tank functional unit placement area 6 in the mud tank functional unit frame (i.e., the supporting and positioning structure). One side of the double-layer bottom inner bottom plate 12 is connected to the double-layer side structure 15 on the ship side, and the other side of the double-layer bottom inner bottom plate 12 is connected to the mud tank frame bottom central inclined plate 14. The mud tank frame bottom central inclined plate 14 is arranged on the opposite side of the double-layer side structure 15 on the ship side, and the other two opposite sides of the double-layer bottom inner bottom plate 12 are connected to the two mud tank frame bottom inclined plates 13. The inclination angle of the bottom central inclined plate 14 is consistent with the inclination angle of the longitudinal bottom inclined plate 26 of the mud tank functional unit 8.

[0039] The interior of the transverse box-type bulkhead 4 and the longitudinal box-type bulkhead 11 frames (i.e., the inner walls of the transverse box-type bulkhead 4 and the longitudinal box-type bulkhead 11 in the mud tank functional unit placement area 6) are provided with a reinforced bulkhead 20 and a buckling stiffener 21. The space of the box-type bulkhead should be large enough to play the role of transmitting the middle longitudinal load and facilitate the internal construction.

[0040] like Figure 6 As shown, the mud tank functional unit 8 includes a mud tank unit body, at least one side wall of the mud tank unit body is provided with an openable and closable mud channel door 22, at least two side walls of the mud tank unit body are provided with slide rails 23, the side walls of the mud tank unit body are reinforced by horizontal beams 24 and vertical beams 25, and the bottom of the mud tank unit body is provided with a transverse bottom inclined plate 27 and a longitudinal bottom inclined plate 26. In this embodiment, two slide rails 23 are respectively provided on the front and rear sides of the mud tank functional unit 8, and the cross-sectional size of the slide rail 23 matches the size of the slide rail positioning and locking module 18 on the transverse box-shaped bulkhead 4, the spacing of the slide rail 23 matches the spacing of the slide rail positioning and locking module 18, and the position of the slide rail 23 also matches the position of the slide rail positioning and locking module 18. The mud tank functional unit 8 is provided with an openable and closable mud channel door 22 on the front and rear sides. The openable and closable mud channel door 22 is made of a plate material and has an opening and closing function. The channel area when the channel door is open accounts for 30% to 40% of the connecting end surface area of ​​the mud tank functional unit 8, so that mud can flow between the mud tank functional units 8. After the channel door is closed, several mud tank functional units 8 can operate independently.

[0041] Below is 188m in total length, 36m in width, 30000m 3 Take the dredger as an example:

[0042] like Figure 1As shown, the transverse box bulkheads 4 are evenly arranged along the length of the ship, the width of the transverse box bulkheads 4 is 0.8m, and the center distance between two adjacent transverse box bulkheads 4 is 12m, which divides the mud tank function area 3 in the middle of the main hull into 8 isolation areas (i.e., mud tank function unit placement areas 6), and the net space length of each area is 11.2m. The first transverse box bulkhead 4 near the stern and the last transverse box bulkhead 4 near the bow divide the entire ship into a main hull stern module 1, a main hull bow module 2, and a mud tank function unit frame for carrying mud tank function units 8.

[0043] like Figure 2 As shown, a longitudinal box bulkhead 11 divides the mud tank functional area 3 into two mud tank functional unit racks on the left and right. The two mud tank functional unit racks on the left and right contain 8 mud tank functional unit placement areas 6. The internal net space width of each mud tank functional unit placement area 6 is 12.35m, the length is 10.8m, and the distance between the two mud tank functional unit placement areas 6 on the left and right is 12.6m. The width of the double-layer side structure 15 is 5.25m, so the entire ship width is 5.25 (double-layer side width) * 2 + 0.8 (longitudinal box bulkhead width) + 12.35 (mud tank functional unit placement area width) * 2 = 36m.

[0044] The bottom of each mud tank functional unit placement area 6 is composed of two mud tank frame bottom inclined plates 13, one mud tank frame bottom central inclined plate 14 and a double bottom inner bottom plate 12. The length of the area of ​​the double bottom inner bottom plate 12 separated by the mud tank frame bottom central inclined plate 14 is 1 / 3 of the length of the mud tank functional unit placement area 6 in the ship length direction, that is, 3.6m, and the length in the ship width direction is 8.25m. The top end of the mud tank frame bottom inclined plate 13 is 2.55m above the double bottom inner bottom plate 12.

[0045] like Figure 3 As shown, mud tank access doors 7 are provided on the transverse box bulkhead 4 and the longitudinal box bulkhead 11. The distance between the mud tank access doors 4 on the longitudinal box bulkhead 11 is the center distance between two adjacent transverse box bulkheads 4, i.e., 12m. The center position of the mud tank access door 7 on the transverse box bulkhead 4 is 6.75m from the midship.

[0046] like Figure 4 As shown, two slide rail positioning and locking modules 18 are provided on each side of the transverse box-shaped bulkhead 4, the cross-sectional size of the locking module 18 is 0.8m*0.55m, and the distance between the two slide rail positioning and locking modules 18 is approximately 1 / 3 of the width of the mud tank functional unit placement area 6, which is 4.2m.

[0047] like Figure 5As shown, the longitudinal box bulkhead 11 frame is provided with a reinforcement partition 20 and buckling stiffeners 21. Four horizontal reinforcement partitions are provided along the height direction, with a spacing of 2.9m to provide sufficient internal space for construction. Buckling stiffeners are provided every two horizontal reinforcement partitions at a spacing of 700mm.

[0048] like Figure 6 As shown, two slide rails 23 are respectively arranged on the front and rear sides of the mud tank functional unit 8, and the cross-sectional dimensions of the slide rails 23 match the dimensions of the slide rail positioning and locking modules 18 on the transverse box-shaped bulkhead 4, which are 0.8m*0.55m. The spacing of the slide rails 23 is consistent with the spacing of the slide rail positioning and locking modules 18, that is, 4.2m. Openable and closable mud channel doors 22 are arranged on the front and rear sides of the mud tank functional unit 8. When the openable and closable mud channel doors 22 are opened, the channel area accounts for 35% of the connecting end surface area of ​​the modular mud tank functional unit 8, which can realize the mud circulation between the mud tank functional units.

Claims

1. A dredging vessel with a detachable mud tank functional unit, characterized in that: The invention comprises a main hull stern module (1), a main hull bow module (2) and a mud tank functional area (3) for carrying a mud tank functional unit (8) divided by a transverse box-shaped bulkhead (4), wherein the transverse box-shaped bulkhead (4) is arranged between the main hull stern module (1) and the main hull bow module (2); a plurality of detachable mud tank functional units (8) are arranged in the mud tank functional area (3), and each mud tank functional unit (8) is provided with at least one openable and closable mud channel door (22) for allowing mud in the mud tank functional area (3) to enter the mud tank functional unit (8).

2. A dredging vessel with a detachable mud tank functional unit as claimed in claim 1, characterized in that: The mud tank functional area (3) is divided into a plurality of mud tank functional unit placement areas (6) for placing mud tank functional units (8); each mud tank functional unit placement area (6) is connected to another.

3. A dredging vessel with a detachable mud tank functional unit as claimed in claim 2, characterized in that: Each of the mud tank functional unit placement areas (6) is surrounded by a double-layer side structure (15), a double-layer bottom structure (5), a transverse box-shaped bulkhead (4), and a longitudinal box-shaped bulkhead (11). The transverse box-shaped bulkhead (4) is evenly arranged along the length of the ship. The double-layer side structure (15), two adjacent transverse box-shaped bulkheads (4), and the longitudinal box-shaped bulkhead (11) form the surrounding side walls of the mud tank functional unit placement area (6). A supporting positioning structure for supporting the mud tank functional unit (8) and matching the bottom of the mud tank functional unit (8) is provided at the bottom of the mud tank functional unit placement area (6). The supporting positioning structure is provided on the double-layer bottom structure (5).

4. A dredging vessel with a detachable mud tank functional unit as claimed in claim 3, characterized in that: The supporting and positioning structure comprises a mud tank frame bottom inclined plate (13) and a mud tank frame bottom central inclined plate (14); the mud tank frame bottom inclined plate (13), the mud tank frame bottom central inclined plate (14) and the double bottom inner bottom plate (12) of the double bottom structure (5) form the bottom of the mud tank functional unit placement area (6); the inclination angle of the mud tank frame bottom inclined plate (13) is consistent with the inclination angle of the transverse bottom inclined plate (27) of the mud tank functional unit (8), and the inclination angle of the bottom central inclined plate (14) is consistent with the inclination angle of the longitudinal bottom inclined plate (26) of the mud tank functional unit (8).

5. A dredging vessel with a detachable mud tank functional unit as claimed in claim 2, characterized in that: At least one mud tank passage door (7) is provided on the inner wall of each mud tank functional unit placement area (6), and the openable and closable mud tank passage door (22) of each mud tank functional unit (8) corresponds to a mud tank passage door (7) of the mud tank functional unit placement area (6) where the mud tank functional unit (8) is located.

6. A dredging vessel with a detachable mud tank functional unit as claimed in claim 2, characterized in that: Two slide rail positioning and locking modules (18) are provided on opposite sides of the inner wall of each of the mud tank functional unit placement areas (6); two slide rails (23) are provided on opposite sides of the mud tank functional unit (8); the positions and sizes of the slide rail positioning and locking modules (18) and the slide rails (23) correspond; by matching the slide rail positioning and locking modules (18) with the slide rails (23), the mud tank functional unit (8) is guided to move up and down in the mud tank functional unit placement area (6).

7. A dredging vessel with a detachable mud tank functional unit as claimed in claim 6, characterized in that: The upper end surface of the slide rail positioning and locking module (18) is flush with the main deck (19), and the distance between the two slide rail positioning and locking modules (18) is between 1 / 3 and 1 / 2 of the width of the mud tank functional unit (8).

8. A dredging vessel with a detachable mud tank functional unit as claimed in any one of claims 3 to 7, characterized in that: The longitudinal box-shaped bulkhead (11) divides the mud tank functional area (3) into a left mud tank functional unit frame (9) and a right mud tank functional unit frame (10), and the longitudinal box-shaped bulkhead (11) is arranged between the left mud tank functional unit frame (3) and the right mud tank functional unit frame (9); the transverse box-shaped bulkheads (4) are evenly arranged along the length of the ship, and the spacing distance of the net space enclosed between any two transverse box-shaped bulkheads (4) is the spacing of the mud tank functional units (8) including the gap; the longitudinal box-shaped bulkhead (11) and the transverse box-shaped bulkhead (4) are arranged crosswise; the left mud tank functional unit frame (9) and the right mud tank functional unit frame (10) are divided into a plurality of mud tank functional unit placement areas (6).

9. A dredging vessel with a detachable mud tank functional unit as claimed in claim 8, characterized in that: The transverse box-type bulkhead (4) and the longitudinal box-type bulkhead (11) are both provided with mud tank access doors (7), and the distance between the mud tank access doors (7) on the longitudinal box-type bulkhead (11) is the distance between two adjacent transverse box-type bulkheads (4); the distance between the mud tank access doors (7) on the transverse box-type bulkhead (4) is 0.5 times the distance between a side plate of the longitudinal box-type bulkhead (11) close to the side and the inner longitudinal bulkhead of the double-layer side structure (15).

10. A dredging vessel with a detachable mud tank functional unit as claimed in claim 1, characterized in that: The front end of the mud tank functional area (3) is located at the rear bulkhead of the bow pump cabin (16), and the rear end is located at the front wall of the engine room (17). The rear bulkhead of the bow pump cabin (16) and the front wall of the engine room (17) are both configured as transverse box-type bulkheads (4).

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