Pipe ditch backfilling method and system based on dredger

Abstract

The invention provides a pipe ditch backfilling method and system based on a dredger, and belongs to the technical field of dredging equipment.The pipe ditch backfilling method based on the dredger comprises the following steps that a mud pump in a starboard cabin sucks mud through a starboard pumping channel, the mud enters a starboard mud discharging pipe through a starboard by-pass pipe, and the starboard mud discharging pipe is communicated with the starboard pumping channel; finally, pipe ditch soil backfilling is conducted through a starboard backfilling pipe expanding head; and / or the mud pump in the port cabin sucks mud through the port cabin suction channel, the mud enters the port mud discharge pipe through the port bypass pipe, and finally pipe ditch mud backfilling is conducted through the port backfilling pipe expanding head; according to the pipe ditch backfilling device, the backfilling pipe expanding heads located on the two sides of the ship boards can conduct pipe ditch backfilling operation independently or simultaneously according to the construction working condition requirements, that is, the backfilling pipe expanding head on one side of the ship board or the backfilling pipe expanding heads on the two sides of the ship board can be selected to work at the same time to meet the requirements of different construction working conditions; the pipe ditch backfilling device is more flexible and diverse in construction form and higher in applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging equipment, and particularly relates to a method and system for backfilling a pipe trench based on a dredger. Background Art

[0002] In the increasingly fierce competition of dredging trends, trailing suction hopper dredgers stand out with their advantages of large single loading capacity, flexible maneuverability, and various construction methods. After the pipe trench is excavated by a trailing suction hopper dredger and the pipeline is laid, it is necessary to backfill the pipe trench after the pipeline laying is completed. When the trailing suction hopper dredger excavates the pipe trench, a large amount of soil needs to be transported and dumped outside, and after the pipeline is laid, the soil needs to be transported back for backfilling. Therefore, the traditional scheme of dumping outside and then backfilling has problems such as complex construction technology, great environmental impact, and high cost. Summary of the Invention

[0003] The present invention provides a method and system for backfilling a pipe trench based on a dredger. After the pipe trench is excavated and the pipeline is laid, the soil stored in the hopper during the pipe trench excavation is reused for backfilling to achieve efficient and environmentally friendly backfilling operations. Specifically, the system adopts a double-side collaborative operation mode, and the in-hopper mud pumps on the left side and the right side are used to synchronously or separately pump the hopper soil stored during the excavation stage, and the soil is accurately backfilled through the discharge pipe. The system innovatively realizes the integrated operation of "excavation - storage - backfilling". Through the technology of recycling the original soil material, the amount of earthwork transported and dumped outside can be reduced, the construction cost can be significantly reduced, the construction efficiency can be improved, and the environmental impact can be reduced.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for backfilling a pipe trench based on a dredger, the pipe trench backfilling method includes the following steps:

[0006] The in-hopper mud pump on the right side sucks soil through the right-side hopper suction channel, enters the right-side discharge pipe through the right-side bypass pipe, and finally backfills the pipe trench soil through the right-side backfilling expansion head; and / or

[0007] The in-hopper mud pump on the left side sucks soil through the left-side hopper suction channel, enters the left-side discharge pipe through the left-side bypass pipe, and finally backfills the pipe trench soil through the left-side backfilling expansion head.

[0008] Preferably, the method for backfilling a pipe trench based on a dredger includes the steps of backfilling the pipe trench simultaneously or separately on the right side and the left side, including the following steps:

[0009] Open the right-side pipe trench backfilling associated gate valve, the soil passes through the right-side hopper suction channel, is sucked by the in-hopper mud pump on the right side, enters the right-side bypass pipe through the in-hopper connecting pipe on the right side, and finally backfills the pipe trench soil through the right-side discharge pipe by the right-side backfilling expansion head; and / or

[0010] Open the associated gate valve for backfilling the port side trench. The soil passes through the port side pumping channel and is sucked by the port side mud pump in the port side hold. It enters the port side bypass pipe through the connecting pipe in the port side hold and finally undergoes trench soil backfilling by the port side backfilling expansion pipe head through the port side mud discharge pipe.

[0011] The trench backfilling system based on a dredger includes a hull, a mud hold, a starboard pumping channel and a port side pumping channel arranged in the hull. The output end of the starboard pumping pipeline is connected with a starboard pumping discharge pipe. One end of the starboard pumping discharge pipe far from the starboard pumping pipeline is provided with a starboard pumping pipeline, and the starboard pumping pipeline is connected with a starboard mud pump in the hold through a tee pipe.

[0012] Preferably, a reserved starboard mud pump dredging pipe is also connected to the interface of the tee pipe. One end of the reserved starboard mud pump dredging pipe far from the tee pipe is connected with a starboard reserved backfilling pipe. One side of the starboard reserved backfilling pipe is connected with a starboard connecting pipe in the hold, and the other side of the starboard reserved backfilling pipe is connected with a starboard underwater pump connecting pipe. A starboard underwater pump is provided on the starboard underwater pump connecting pipe. Starboard bypass pipes are provided on the starboard underwater pump connecting pipes on both sides of the starboard underwater pump. The starboard underwater pump is connected with a starboard backfilling expansion pipe head through a starboard mud discharge pipe.

[0013] Preferably, the output end of the port side pumping pipeline is connected with a port side pumping discharge pipe. One end of the port side pumping discharge pipe far from the port side pumping pipeline is connected with a port side pumping pipeline, and the port side pumping pipeline is connected with a port side mud pump in the hold through a four-way pipe.

[0014] Preferably, a reserved port side mud pump dredging pipe is also connected to the interface of the four-way pipe. One end of the reserved port side mud pump dredging pipe far from the four-way pipe is connected with a port side reserved backfilling pipe. One side of the port side reserved backfilling pipe is connected with a port side connecting pipe in the hold, and the other side of the port side reserved backfilling pipe is connected with a port side underwater pump connecting pipe. A port side underwater pump is provided on the port side underwater pump connecting pipe. Port side bypass pipes are provided on the port side underwater pump connecting pipes on both sides of the port side underwater pump. The port side underwater pump is connected with a port side backfilling expansion pipe head through a port side mud discharge pipe.

[0015] From the above technical solutions, it can be seen that the present invention has the following beneficial effects:

[0016] 1. In the present invention, the number of pumping channels inside the hull is two, and the number of mud pumps inside the cabin is also two. The two mud pumps inside the cabin can be connected to the pumping tunnel simultaneously or separately. The number of backfill expansion heads is two, and the two backfill expansion heads are connected to the mud pumps inside the cabin and are located on both sides of the ship's hull. During use, the backfill expansion heads located on both sides of the ship's hull can carry out trench backfilling operations individually or simultaneously according to the requirements of the construction working conditions, that is, the backfill expansion head on one side of the ship's hull can be selected to work, or the backfill expansion heads on both sides of the ship's hull can work simultaneously to meet the requirements of different construction working conditions, making the construction form of this trench backfilling device more flexible and diverse and more applicable. This system innovatively realizes the integrated operation of "excavation - storage - backfill". Through the technology of recycling the original soil material, the transportation volume of the externally dumped soil can be reduced, the construction cost can be significantly reduced, the construction efficiency can be improved, and the impact on the environment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the piping system schematic diagram of the trench backfilling system provided by the present invention;

[0018] Figure 2 is Figure 1 the piping system schematic diagram from another perspective;

[0019] Figure 3 is Figure 2 the piping system schematic diagram of the bow part of the hull in

[0020] In the figure: 10, hull; 20, mud cabin; 210, starboard pumping channel; 211, starboard pumping discharge pipe; 212, starboard pumping pipeline; 213, starboard mud pump inside the cabin; 214, reserved dredging pipe for the starboard mud pump inside the cabin; 215, starboard reserved backfill pipe; 216, starboard connection pipe inside the cabin; 217, starboard underwater pump connection pipe; 218, starboard underwater pump; 219, starboard bypass pipe; 2110, starboard mud discharge pipe; 2111, starboard backfill expansion head; 2112, starboard series mud discharge pipeline; 2113, left - hand side pump series inlet gate valve; 220, port pumping channel; 221, port pumping discharge pipe; 222, port pumping pipeline; 223, port mud pump inside the cabin; 224, reserved dredging pipe for the port mud pump inside the cabin; 225, port reserved backfill pipe; 226, port connection pipe inside the cabin; 227, port underwater pump connection pipe; 228, port underwater pump; 229, port bypass pipe; 2210, port mud discharge pipe; 2211, port backfill expansion head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following provides a detailed description of a preferred embodiment of the present invention with reference to the drawings.

[0022] To achieve the above - mentioned purpose, the embodiments of the present invention adopt the following technical solutions:

[0023] Refer to Figure 1 、Figure 2 , Figure 3 , a trench backfilling system based on a dredger, comprising a hull 10, a mud tank 20, a starboard pumping channel 210 and a port pumping channel 220 arranged inside the hull. The output end of the starboard pumping pipeline 210 is connected with a starboard pumping discharge pipe 211, and a first starboard pumping gate valve and a second starboard pumping gate valve are successively arranged on the starboard pumping discharge pipe 211 along the direction away from the starboard pumping channel. One end of the starboard pumping discharge pipe 211 away from the starboard pumping pipeline 210 is provided with a starboard pumping pipeline 212, and a starboard pumping isolation gate valve is arranged on the starboard pumping pipeline 212. The starboard pumping pipeline 212 is connected with a starboard in-cabin mud pump 213 through a tee pipe.

[0024] An interface of the tee pipe is further connected with a reserved starboard in-cabin mud pump dredging pipe 214, and a starboard in-cabin pump suction port gate valve is arranged on the reserved starboard in-cabin mud pump dredging pipe 214. One end of the reserved starboard in-cabin mud pump dredging pipe 214 away from the tee pipe is connected with a starboard reserved backfilling pipe 215. One side of the starboard reserved backfilling pipe 215 is connected with a starboard in-cabin connecting pipe 216, and a starboard in-cabin pump loading hatch gate valve and a starboard underwater pump loading hatch gate valve are successively arranged on the starboard in-cabin connecting pipe. The other side of the starboard reserved backfilling pipe 215 is connected with a starboard underwater pump connecting pipe 217, and a starboard suction port gate valve is arranged on the starboard underwater pump connecting pipe 217. One side of the starboard underwater pump connecting pipe 217 away from the starboard reserved backfilling pipe 215 is provided with a starboard underwater pump 218. Starboard bypass pipes 219 are arranged on the starboard underwater pump connecting pipe 217 on both sides of the starboard underwater pump 218. The starboard underwater pump 218 is connected with a starboard backfilling expansion head 2111 through a starboard mud discharge pipe 2110.

[0025] The output end of the port pumping pipeline 220 is connected with a port pumping discharge pipe 221, and a first port pumping gate valve and a second port pumping gate valve are successively arranged on the port pumping discharge pipe 221 along the direction away from the port pumping channel 220. One end of the port pumping discharge pipe 221 away from the port pumping pipeline 220 is connected with a port pumping pipeline 222, and a port pumping isolation valve is arranged on the port pumping pipeline 222. The port pumping pipeline 222 is connected with a port in-cabin mud pump 223 through a four-way pipe.

[0026] At the interface of the four-way pipe, a reserved dredging pipe 224 of the mud pump in the port side cabin is also connected. One end of the reserved dredging pipe 224 of the mud pump in the port side cabin, which is far away from the four-way pipe, is connected to a reserved backfilling pipe 225 in the port side cabin. One side of the reserved backfilling pipe 225 in the port side cabin is connected to a connecting pipe 226 in the port side cabin, and the other side of the reserved backfilling pipe 225 in the port side cabin is connected to an underwater pump connecting pipe 227 in the port side cabin. A port side suction valve is provided on the underwater pump connecting pipe 227 in the port side cabin. An underwater pump 228 in the port side cabin is provided on the underwater pump connecting pipe 227 in the port side cabin. A port side bypass pipe 229 is provided on the underwater pump connecting pipe 227 in the port side cabin on both sides of the underwater pump 228 in the port side cabin. The underwater pump 228 in the port side cabin is connected to a port side backfilling expansion pipe head 2211 through a port side mud discharging pipe 2210. The starboard mud discharging pipe 2110 and the port side mud discharging pipe 2210 can perform the trench backfilling operation alone or simultaneously.

[0027] At the interface of the port side four-way pipe, there is also a point E. One end of the point E is connected to the mud pump 223 in the port side cabin, and the other end of the point E is connected to a starboard series mud discharging pipeline 2112. A port side pump series inlet valve 2113 is provided on the starboard series mud discharging pipeline 2112.

[0028] Furthermore, in order to realize the connection between the starboard pumping cabin pipeline 210 and the port side pumping cabin pipeline 220, the starboard pumping cabin pipeline 212 and the port side pumping cabin pipeline 222 are connected through a connecting pipeline, and a pumping cabin connection valve is provided on the connecting pipeline.

[0029] Refer to Figure 1 , a trench backfilling method based on a dredger, the trench backfilling method includes the following steps:

[0030] The mud pump 213 in the starboard cabin sucks soil through the starboard pumping cabin channel 210, enters the starboard mud discharging pipe 2110 through the starboard bypass pipe 219, and finally fills the trench with soil through the starboard backfilling expansion pipe head 2111; and / or

[0031] The mud pump 223 in the port side cabin sucks soil through the port side pumping cabin channel 220, enters the port side mud discharging pipe 2210 through the port side bypass pipe 229, and finally fills the trench with soil through the port side backfilling expansion pipe head 2211.

[0032] Refer to Figure 2 , as a preferred technical solution of this embodiment, the trench backfilling method based on a dredger includes the steps of simultaneously or separately backfilling the trench on the starboard side and the port side, including the following steps:

[0033] Open the starboard trench backfilling associated valve. The soil is sucked by the mud pump 213 in the starboard cabin through the starboard pumping cabin channel 210, enters the starboard bypass pipe 219 through the starboard cabin connecting pipe 216, and finally fills the trench with soil through the starboard mud discharging pipe 2110 by the starboard backfilling expansion pipe head 2111; and / or

[0034] Open the associated sluice valve for backfilling the port side trench. The soil passes through the port side pumping channel 220, and is sucked by the port side in-tank mud pump 223. Then it enters the port side bypass pipe 229 through the port side in-tank connecting pipe 226, and finally the trench soil is backfilled by the port side backfill pipe expander head 2211 through the port side mud discharge pipe 2210.

[0035] During use, refer to Figure 3 When backfilling the trench on both the port side and the starboard side simultaneously, first, open the first starboard side pumping sluice valve HV04, the second starboard side pumping sluice valve HV06, the starboard side pumping isolation sluice valve HV12, the starboard side in-tank pump loading sluice valve HV15, the starboard side underwater pump loading sluice valve HV16, and the starboard side suction sluice valve HV08. The soil passes through the starboard side pumping channel, through the first starboard side pumping sluice valve HV04, the second starboard side pumping sluice valve HV06, and the starboard side pumping isolation sluice valve HV12, and is sucked by the starboard side in-tank mud pump. Then it passes through point D, through the starboard side in-tank pump loading sluice valve HV15, the starboard side underwater pump loading sluice valve HV16, through point B of the mud pipe, through the starboard side suction sluice valve HV08, through the starboard side bypass pipe and the starboard side mud discharge pipe, and the trench soil is backfilled by the starboard side backfill pipe expander head. At the same time, open the first port side pumping sluice valve HV03, the second port side pumping sluice valve HV05, the port side pumping isolation valve HV11, and the port side suction sluice valve HV07. The soil passes through the port side pumping channel, through the first port side pumping sluice valve HV03, the second port side pumping sluice valve HV05, and the port side pumping isolation valve HV11, and is sucked by the port side in-tank mud pump. Then it passes through point C, and then through point A of the mud pipe, through the port side suction sluice valve HV07, through the port side bypass pipe and the port side mud discharge pipe, and the trench soil is backfilled by the port side backfill pipe expander head.

[0036] When backfilling the pipe trenches on the starboard and port sides respectively, the backfilling processes on the starboard and port sides are carried out separately. When backfilling the starboard pipe trench, the soil passes through the starboard pumping channel, and is sucked by the starboard in-tank mud pump through the first port pumping gate valve HV03, the first starboard pumping gate valve HV04, the second port pumping gate valve HV05, the second starboard pumping gate valve HV06, the pumping isolation gate valve HV10, and the starboard pumping isolation gate valve HV12. Then it passes through point D, through the starboard in-tank pump loading gate valve HV15 and the starboard underwater pump loading gate valve HV16, through point B of the mud pipe, through the starboard suction gate valve HV08, through the starboard bypass pipe and the starboard sludge discharge pipe, and the pipe trench is backfilled with soil by the starboard backfilling expansion head. When backfilling the port pipe trench, the soil passes through the port pumping channel, and is sucked by the port in-tank mud pump through the first port pumping gate valve HV03, the first starboard pumping gate valve HV04, the second port pumping gate valve HV05, the second starboard pumping gate valve HV06, the pumping isolation gate valve HV10, and the port pumping isolation valve HV11. Then it passes through point C, and then through point A of the mud pipe, through the port suction gate valve HV07, through the port bypass pipe and the port sludge discharge pipe, and the pipe trench is backfilled with soil by the port backfilling expansion head.

[0037] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for backfilling a trench based on a dredger, characterized in that The described trench backfilling method includes the following steps: The mud pump (213) in the starboard cabin sucks mud through the starboard pumping channel (210), enters the starboard mud discharge pipe (2110) through the starboard bypass pipe (219), and finally fills the trench with mud through the starboard backfilling expansion pipe head (2111); and / or The mud pump (223) in the port cabin sucks mud through the port pumping channel (220), enters the port mud discharge pipe (2210) through the port bypass pipe (229), and finally fills the trench with mud through the port backfilling expansion pipe head (2211).

2. The method for backfilling a trench based on a dredger according to claim 1, wherein The described trench backfilling method based on a dredger includes the steps of simultaneously or separately backfilling the trench on the starboard and port sides, and includes the following steps: Open the starboard trench backfilling associated gate valve. Mud passes through the starboard pumping channel (210), is sucked by the mud pump (213) in the starboard cabin, enters the starboard bypass pipe (219) through the starboard in-cabin connecting pipe (216), and finally fills the trench with mud through the starboard mud discharge pipe (2110) by the starboard backfilling expansion pipe head (2111); and / or Open the port trench backfilling associated gate valve. Mud passes through the port pumping channel (220), is sucked by the mud pump (223) in the port cabin, enters the port bypass pipe (229) through the port in-cabin connecting pipe (226), and finally fills the trench with mud through the port mud discharge pipe (2210) by the port backfilling expansion pipe head (2211).

3. The trench backfilling system based on a dredger, comprising a hull (10), a mud tank (20), and a starboard pumping channel (210) and a port pumping channel (220) arranged inside the hull, characterized in that, The output end of the starboard pumping channel (210) is connected to a starboard pumping discharge pipe (211). One end of the starboard pumping discharge pipe (211) far from the starboard pumping channel (210) is provided with a starboard pumping pipeline (212), and the starboard pumping pipeline (212) is connected to a mud pump (213) in the starboard cabin through a tee pipe.

4. The dredger-based trench backfilling system according to claim 3, wherein, A reserved mud pump dredging pipe (214) in the starboard cabin is also connected to the interface of the tee pipe. One end of the reserved mud pump dredging pipe (214) far from the tee pipe is connected to a starboard reserved backfilling pipe (215). One side of the starboard reserved backfilling pipe (215) is connected to a starboard in-cabin connecting pipe (216). The other side of the starboard reserved backfilling pipe (215) is connected to a starboard underwater pump connecting pipe (217). A starboard underwater pump (218) is provided on the starboard underwater pump connecting pipe (217). A starboard bypass pipe (219) is provided on the starboard underwater pump connecting pipe (217) on both sides of the starboard underwater pump (218). The starboard underwater pump (218) is connected to a starboard backfilling expansion pipe head (2111) through a starboard mud discharge pipe (2110).

5. The trench backfilling system based on a dredger according to claim 4, wherein The output end of the port pumping channel (220) is connected to a port pumping discharge pipe (221). One end of the port pumping discharge pipe (221) far from the port pumping channel (220) is connected to a port pumping pipeline (222), and the port pumping pipeline (222) is connected to a mud pump (223) in the port cabin through a four-way pipe.

6. The dredger-based pipe trench backfilling system according to claim 5, characterized in that, A reserved dredging pipe (224) for the mud pump in the starboard cabin is also connected to the interface of the four-way pipe. One end of the reserved dredging pipe (224) for the mud pump in the starboard cabin, which is far away from the four-way pipe, is connected to a reserved backfill pipe (225) on the starboard side. One side of the reserved backfill pipe (225) on the starboard side is connected to a connecting pipe (226) in the starboard cabin. The other side of the reserved backfill pipe (225) on the starboard side is connected to an underwater pump connecting pipe (227) on the starboard side. An underwater pump (228) on the starboard side is provided on the underwater pump connecting pipe (227) on the starboard side. A bypass pipe (229) on the starboard side is provided on the underwater pump connecting pipe (227) on the starboard side, on both sides of the underwater pump (228) on the starboard side. The underwater pump (228) on the starboard side is connected to a backfill expansion head (2211) on the starboard side through a discharge pipe (2210) on the starboard side.

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