Reservoir desilting method based on multi-row parallel entry and construction method of reservoir desilting method

Abstract

The invention provides a reservoir desilting method based on multi-row parallel entry and a construction method thereof, and relates to the technical field of reservoir desilting. According to the reservoir desilting and construction method based on multi-row parallel feeding, a multi-source slurry collecting and homogenizing tank, a supporting seat and a hoisting lug seat are included. According to the reservoir desilting and construction method based on multi-row parallel entry, the multiple cutter suction dredgers are adopted for synchronous partition operation, the modular booster pump station can be intelligently configured, started and stopped according to the conveying distance and the terrain, the power limitation of single pumping is broken through, and stable and continuous conveying of tens of kilometers of slurry is achieved; the modular design also enables the replacement of key parts to be more convenient and faster, further reduces the maintenance cost, optimizes the flowability of slurry after homogenization, reduces the on-way resistance of a pipeline, achieves the on-demand energy supply through the frequency conversion cooperative control of a booster pump station, avoids the ineffective work, remarkably reduces the comprehensive pumping energy consumption, and improves the working efficiency. And the sludge is conveyed in the pipeline in a closed manner, so that pollution and leakage are reduced.

Description

Technical Field

[0001] This invention relates to the field of reservoir dredging technology, specifically to a reservoir dredging method based on multiple parallel drainage processes and its construction. Background Technology

[0002] Dredging projects in reservoirs, lakes, and other bodies of water are crucial for restoring storage capacity and improving the aquatic environment. Currently, the mainstream dredging method is cutter suction dredger operation. The typical construction process involves a single cutter suction dredger operating at a fixed point or within a small area, pumping the dredged mud directly to the near shore or transporting it to a storage yard via pipeline. However, in actual large-scale dredging projects, especially for large reservoirs, the above-mentioned traditional method has gradually revealed the following technical limitations: Existing technologies mostly rely on sequential operations with single vessels, resulting in limited dredging capacity, long overall construction periods, and low dredging efficiency. During the months-long construction period, reservoirs often need to operate at low water levels, severely interfering with their comprehensive benefits such as flood control, water supply, power generation, and irrigation.

[0003] The mud output by cutter suction dredgers fluctuates wildly in concentration and flow rate. Directly introducing it into long-distance pipelines can easily cause sedimentation and blockages, requiring frequent shutdowns for cleaning and resulting in short effective operating times. Existing transportation solutions typically only install pumping power at the pipeline's starting point. As the transportation distance increases, frictional losses become enormous, leading to a sharp decline in transportation efficiency, a surge in energy consumption, or even making long-distance transportation impossible. Using trucks for land transportation presents environmental and social problems such as dust, spillage, exhaust emissions, and traffic congestion.

[0004] Existing technologies treat "dredging-transportation-disposal" as a simple series process, lacking an intermediate conditioning step to address the characteristics of the mud material. Raw mud that has not been homogenized and separated from impurities is the root cause of wear, blockage, and unstable operation of subsequent transportation equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a reservoir dredging method based on multiple parallel processes, which solves the problems of low dredging efficiency, severe equipment wear and tear during sludge transport, and easy clogging. Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reservoir dredging device based on multi-row parallel operation, comprising a multi-source mud collection and homogenization tank, a support base, and lifting lugs. The support base is installed at the bottom of the multi-source mud collection and homogenization tank for support, and the lifting lugs are installed at the top of the multi-source mud collection and homogenization tank for lifting and movement. The interior of the multi-source mud collection and homogenization tank is divided into three chambers: a storage chamber, a sedimentation chamber, and a homogenization chamber. A filter device is installed above the sedimentation chamber to filter large impurities in the sludge into the storage chamber. The sludge after preliminary filtration enters the sedimentation chamber, where an auxiliary sedimentation device is installed. The sludge moves to the right. During the process, the agitation of the auxiliary sedimentation device causes the heavier, harder particles inside to settle to the bottom, preventing increased equipment wear and blockages during subsequent transport. A sedimentation baffle plate is installed between the sedimentation chamber and the homogenization chamber. The homogenization chamber is equipped with a homogenization stirring device, which is bidirectional and can prevent eddies during stirring. After homogenization, the resistance of subsequent transport is reduced, preventing sedimentation and blockage in the pipeline. When the sludge homogenized inside the homogenization tank is transported in the pipeline, a modular booster pump station is set in the middle of the long-distance transport pipeline for pressurized transport, improving transport efficiency and preventing blockages in the pipeline, thus increasing the transport capacity.

[0007] Preferably, the filtration device includes a manifold box, a manifold pipe connector, a filter rod, a partition plate, and a waste residue cleaning door. The manifold box is fixedly installed on the top of the multi-source mud collection homogenizing tank. The manifold pipe connector is installed on the side of the manifold box. The partition plate is installed inside the multi-source mud collection homogenizing tank. The left side of the partition plate is a storage chamber, and the right side of the partition plate is a sedimentation chamber. The right end of the filter rod is fixedly installed to the right inner wall of the manifold box, and the left end of the filter rod is fixedly installed to the right side wall of the partition plate. The partition plate is installed at an angle. The waste residue cleaning door is installed on the left end surface of the multi-source mud collection homogenizing tank. Large impurities filtered out inside the storage chamber are cleaned by opening the waste residue cleaning door.

[0008] Preferably, the auxiliary sedimentation device includes a sedimentation tank, a slag discharge pipe, a sedimentation motor, a horizontal rotating shaft, and a sedimentation stirring rod. The sedimentation tank is fixedly installed at the bottom of the multi-source mud collection homogenizing tank. The slag discharge pipe is installed at the bottom of the sedimentation tank, and a control valve is installed at the bottom of the slag discharge pipe. During normal use, the control valve is kept closed for sedimentation. When it is necessary to discharge the internal sediment, the control valve is opened, and the impurities precipitated inside the sedimentation tank are discharged through the slag discharge pipe. The sedimentation motor is fixedly installed on the front side wall of the multi-source mud collection homogenizing tank. The horizontal rotating shaft is rotatably installed on the inner wall of the multi-source mud collection homogenizing tank through a bearing. The horizontal rotating shaft is horizontally installed. The output end of the sedimentation motor is connected to the end of the horizontal rotating shaft for transmission. The sedimentation motor drives the horizontal rotating shaft to rotate. The sedimentation stirring rod is installed on the surface of the horizontal rotating shaft. When the sedimentation motor is working, it rotates clockwise, and the end of the sedimentation stirring rod away from the horizontal rotating shaft bends in a clockwise direction.

[0009] Preferably, the homogenizing and stirring device includes a homogenizing tank, a sludge discharge pipe, a power box, a first stirring motor, a second stirring motor, a rotating sleeve, a first stirring frame, a rotating shaft frame, and a second stirring frame. The homogenizing tank is fixedly installed at the bottom of the multi-source mud collection homogenizing tank. The sludge discharge pipe is installed at the bottom of the homogenizing tank to discharge the homogenized sludge. The power box is fixedly installed at the top of the multi-source mud collection homogenizing tank. The first stirring frame is fixedly installed on the surface of the rotating sleeve. The rotating shaft frame is rotatably installed on the inner side of the rotating sleeve via bearings. The second stirring frame is fixedly installed on the outer side of the bottom end of the rotating shaft frame. The top end of the rotating sleeve is connected to the power box via bearings. The power box is rotatably mounted, with the top of the rotating sleeve extending into the power box. The second agitator motor is fixedly mounted on the top of the power box, and its output end passes through the power box and is connected to the top of the rotating shaft frame. The rotating shaft frame is driven to rotate by the second agitator motor. The first agitator motor is fixedly mounted on the top of the power box, and its output end extends into the power box. A gear is installed on the output end of the first agitator motor. A gear ring is fixedly mounted on the outer wall of the rotating sleeve. The gear meshes with the gear ring. When the first agitator motor rotates, it drives the rotating sleeve to rotate through the cooperation of the gear and the gear ring. The rotating sleeve and the rotating shaft frame rotate in opposite directions.

[0010] Preferably, the modular booster pump station includes a sludge booster pump, a mounting base, a hoisting frame, positioning openings, a sludge suction pipe, and a sludge discharge pipe. The sludge booster pump is fixedly installed on the top of the mounting base, and the hoisting frame is fixedly installed on the top of the mounting base with bolts. The pump station is hoisted and moved using the hoisting frame. The positioning openings are located at the four corners of the top of the mounting base. The mounting base is fixed to the ground by inserting a fixing steel pipe into the positioning openings to prevent vibration from affecting the stability of the equipment during operation. The sludge booster pump draws sludge into the pump through the sludge suction pipe and then pressurizes it. The pressurized sludge is discharged through the sludge discharge pipe.

[0011] Preferably, both the suction pipe and the discharge pipe are equipped with quick-connect devices at their ends. These devices accelerate the installation and connection of the pipes, allowing a single person to complete the pipe connection and installation work.

[0012] Preferably, the quick-connect device includes a connector, a snap-fit ​​groove, a through bolt hole, and a mounting clamp. The snap-fit ​​groove is located inside the connector. During installation, the flange at the end of the pipe and the flange at the end of the sludge suction pipe snap into the snap-fit ​​groove for quick positioning. Bolts can then be inserted for fixing. A notch is provided at the bottom of the snap-fit ​​groove to prevent residual sludge inside the groove from affecting the snap-fit ​​of the flange. The mounting clamp is installed on the top of the connector with bolts, and the connector is fixed to the end of the sludge suction pipe by the mounting clamp.

[0013] Preferably, multiple modular booster pump stations are provided, and the installation spacing is controlled according to the requirements of transmission distance and transmission speed.

[0014] Preferably, the manifold connector is provided in multiple locations.

[0015] A reservoir dredging method based on multiple parallel processes includes the following steps: S1. Preliminary investigation and dynamic zoning planning: Conduct an investigation of the reservoir and divide the dredging area into multiple work units based on the distribution of bottom sediment pollution, water depth, and ecologically sensitive areas (such as spawning areas); S2. Multiple vessels operate simultaneously, with simultaneous cutter suction and primary transport: Multiple cutter suction dredging vessels operate simultaneously within the planned unit, pumping the initially mixed sludge to the multi-source sludge collection and homogenization tank on the shore through onboard pumps and independent branch pipes. S3, Primary Filtration: The sludge enters the sedimentation zone, where heavy materials such as stones settle under the gentle agitation of a low-speed horizontal stirring rod and are periodically discharged through the bottom valve; the clearer liquid and sludge in the upper layer flow towards the rear. S4. Assisted sedimentation: Large particles in the filtered sludge are removed using an auxiliary sedimentation device. S5. High-efficiency homogenization: The settled mud enters the homogenization zone and is homogenized and stirred by a homogenizing and stirring device to break up the agglomeration structure and form a homogeneous fluid with stable concentration, thereby reducing the transmission resistance. S6. Boosted Conveying: Based on the preset conveying distance and terrain elevation differences, modular booster pump stations are installed in advance at calculated locations along the pipeline. During the conveying process, the central control system monitors the pipeline pressure in real time. When the pressure is lower than the set value, the nearest downstream booster pump station is automatically started or accelerated; when the flow rate decreases or the pressure is too high, some pump stations are automatically slowed down or suspended, achieving intelligent and energy-saving "relay" conveying. The slurry is finally transported to a storage yard or treatment plant far away from the reservoir, completing the entire closed-loop treatment process. Beneficial effects

[0016] This invention provides a reservoir dredging method based on multiple parallel processes and its construction. It has the following beneficial effects: By employing multiple cutter suction dredgers to operate simultaneously in different zones, the traditional single-point sequential construction method was transformed into multi-point parallel construction. Through the operational planning of "multi-row parallel operation and zoned skipping," refuge and migration space was preserved for aquatic organisms, significantly improving the overall dredging efficiency from the source.

[0017] After the mud enters the multi-source mud collection and homogenization tank, it undergoes three stages of treatment: filtration, sedimentation, and homogenization. This transforms the initially unstable mud into a homogeneous and stable fluid, reducing the forced cleaning frequency of the subsequent conveying system's mud pumps from once every 0.5 hours in the traditional method to once every 3-4 hours. Calculations show that the effective dredging operation time can be increased by approximately 43%, significantly shortening the construction period. This efficient operation mode allows dredging projects to be completed in a shorter time, greatly reducing interference with the normal scheduling functions of the reservoir, such as flood control, water supply, and power generation.

[0018] Modular design allows for flexible adjustment of transmission distance. Modular booster pump stations can be intelligently configured and started / stopped according to the transmission distance and terrain, breaking through the power limitations of single pumping and achieving stable and continuous mud transmission over tens of kilometers. Modular design also makes the replacement of key components more convenient and faster, further reducing maintenance costs.

[0019] After homogenization, the fluidity of the slurry is optimized, reducing the resistance along the pipeline. The frequency conversion coordinated control of the booster pump station can achieve on-demand energy supply, avoiding ineffective work. The overall pumping energy consumption is significantly reduced, and the sludge is transported in a closed manner within the pipeline, reducing pollution and leakage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the multi-source mud collection and homogenization tank structure of the present invention; Figure 2 This is a schematic cross-sectional view of the multi-source mud collection homogenizing tank of the present invention; Figure 3 This is a schematic diagram of the homogenizing stirring device of the present invention; Figure 4 This is a schematic diagram of the modular booster pump station structure of the present invention; Figure 5 This is a schematic diagram of the quick-connect device of the present invention; Figure 6 This is a flowchart of the sludge removal process of the present invention; The components include: 1. Multi-source mud collection and homogenization tank; 2. Support base; 3. Lifting lug; 41. Manifold box; 42. Manifold pipe connector; 43. Filter rod; 44. Divider plate; 45. Waste residue cleaning door; 51. Sedimentation tank; 52. Sludge discharge pipe; 53. Sedimentation motor; 54. Horizontal rotating shaft; 55. Sedimentation stirring rod; 61. Homogenization tank; 62. Sludge discharge pipe; 63. Power box; 64. First stirring motor; 65. Second stirring motor; 66. Rotating sleeve; 67. First stirring frame; 68. Rotating shaft frame; 69. Second stirring frame; 7. Sludge booster pump; 71. Mounting base; 72. Lifting frame; 73. Positioning opening; 74. Sludge suction pipe; 75. Sludge discharge pipe; 8. Quick-connect device; 81. Connecting seat; 82. Snap-fit ​​groove; 83. Through bolt hole; 84. Installation clamp. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-6 This invention provides a technical solution: a reservoir dredging device based on multi-row parallel operation, comprising a multi-source mud collection and homogenization tank 1, a support base 2, and a lifting lug 3. The support base 2 is installed at the bottom of the multi-source mud collection and homogenization tank 1 for support, and the lifting lug 3 is installed at the top of the multi-source mud collection and homogenization tank 1 for lifting and movement. The multi-source mud collection and homogenization tank 1 is internally divided into three chambers: a storage chamber, a sedimentation chamber, and a homogenization chamber. A filter device is installed above the sedimentation chamber to filter large impurities in the sludge into the storage chamber. The sludge after preliminary filtration enters the sedimentation chamber, which is equipped with an auxiliary sedimentation device. During the movement of the sludge to the right, the agitation of the auxiliary sedimentation device causes the heavier, harder particles inside to be dispersed. The sediment settles to the bottom to prevent increased equipment wear and blockages during subsequent transport. A sedimentation baffle plate is installed between the sedimentation chamber and the homogenization chamber. This baffle plate ensures that only the upper layer of sludge can enter the right side of the sedimentation chamber, while heavier particulate impurities in the sludge are blocked inside the sedimentation tank 51. The homogenization chamber is equipped with a homogenizing and stirring device that performs bidirectional stirring. This device prevents eddies from forming during stirring and reduces resistance during subsequent transport after homogenization, preventing sedimentation and blockage in the pipeline. When the homogenized sludge from the multi-source mud collection homogenization tank 1 is transported in the pipeline, a modular booster pump station is installed in the middle of the long-distance transport pipeline for pressurized transport, improving transport efficiency and preventing blockages in the pipeline, thus increasing the transport capacity.

[0023] The filtration device includes a manifold box 41, a manifold pipe connector 42, a filter rod 43, a partition plate 44, and a waste cleaning door 45. The manifold box 41 is fixedly installed on the top of the multi-source mud collection homogenizing tank 1. The manifold pipe connector 42 is installed on the side of the manifold box 41. The partition plate 44 is installed inside the multi-source mud collection homogenizing tank 1. The left side of the partition plate 44 is a storage chamber, and the right side of the partition plate 44 is a sedimentation chamber. The right end of the filter rod 43 is fixedly installed to the right inner wall of the manifold box 41, and the left end of the filter rod 43 is fixedly installed to the right side wall of the partition plate 44. The partition plate 44 is installed at an angle. The waste cleaning door 45 is installed on the left end surface of the multi-source mud collection homogenizing tank 1. By opening the waste cleaning door 45, large impurities filtered out inside the storage chamber are cleaned. After the sludge enters the manifold box 41, it falls above the filter rod 43. The sludge directly passes through the filter rod 43 and falls into the sedimentation chamber. Large impurities slide to the left along the filter rod 43 to the left side of the partition plate 44 for storage.

[0024] The auxiliary sedimentation device includes a sedimentation tank 51, a slag discharge pipe 52, a sedimentation motor 53, a horizontal rotating shaft 54, and a sedimentation stirring rod 55. The sedimentation tank 51 is fixedly installed at the bottom of the multi-source mud collection and homogenization tank 1. The slag discharge pipe 52 is installed at the bottom of the sedimentation tank 51, and a control valve is installed at the bottom of the slag discharge pipe 52. During normal use, the control valve is kept closed for sedimentation. When it is necessary to discharge the internal sediment, the control valve is opened, and the impurities precipitated inside the sedimentation tank 51 are discharged through the slag discharge pipe 52. The sedimentation motor 53 is fixedly installed on the front side wall of the multi-source mud collection and homogenization tank 1. The horizontal rotating shaft 54 ​​is rotatably installed on the inner wall of the multi-source mud collection and homogenization tank 1 through bearings. For horizontal installation, the output end of the sedimentation motor 53 is connected to the end of the horizontal rotating shaft 54. The sedimentation motor 53 drives the horizontal rotating shaft 54 ​​to rotate. The sedimentation stirring rod 55 is installed on the surface of the horizontal rotating shaft 54. When the sedimentation motor 53 is working, it rotates clockwise. The end of the sedimentation stirring rod 55 away from the horizontal rotating shaft 54 ​​bends in the clockwise direction. The sedimentation motor 53 drives the horizontal rotating shaft 54 ​​to rotate, and the horizontal rotating shaft 54 ​​drives the sedimentation stirring rod 55 to rotate. The sedimentation stirring rod 55 agitates the sludge, causing the larger particles of stones and other heavier impurities in the sludge to settle downwards to the bottom of the sedimentation tank 51 for storage. The upper layer of sludge passes through the sedimentation barrier plate and enters the homogenization chamber.

[0025] The homogenizing and mixing device includes a homogenizing tank 61, a sludge discharge pipe 62, a power unit 63, a first stirring motor 64, a second stirring motor 65, a rotating sleeve 66, a first mixing frame 67, a rotating shaft frame 68, and a second mixing frame 69. The homogenizing tank 61 is fixedly installed at the bottom of the multi-source mud collection homogenizing tank 1. The sludge discharge pipe 62 is installed at the bottom of the homogenizing tank 61, through which the homogenized sludge is discharged. The power unit 63 is fixedly installed at the top of the multi-source mud collection homogenizing tank 1. The first mixing frame 67 is fixedly installed on the surface of the rotating sleeve 66. The rotating shaft bracket 68 is rotatably mounted inside the rotating sleeve 66 via bearings. The second stirring frame 69 is fixedly mounted on the outer side of the bottom end of the rotating shaft bracket 68. The top end of the rotating sleeve 66 is rotatably mounted to the power box 63 via bearings, and the top end of the rotating sleeve 66 extends into the power box 63. The second stirring motor 65 is fixedly mounted on the top of the power box 63, and the output end of the second stirring motor 65 passes through the power box 63 and is connected to the top end of the rotating shaft bracket 68 for transmission. The rotating shaft bracket 68 is driven to rotate by the second stirring motor 65. The first stirring motor 64 is fixed. Mounted on top of the power box 63, the output end of the first agitator motor 64 extends into the power box 63. A gear is installed at the output end of the first agitator motor 64. A gear ring is fixedly installed on the outer wall of the rotating sleeve 66, meshing with the gear. When the first agitator motor 64 rotates, it drives the rotating sleeve 66 to rotate through the engagement of the gear and gear ring. The rotating sleeve 66 and the rotating shaft frame 68 rotate in opposite directions. The second agitator motor 65 drives the rotating shaft frame 68 to rotate, which in turn drives the second agitator frame 69 to rotate. The first stirring motor 64 drives the rotating sleeve 66 to rotate through the cooperation of gears and gear rings. The rotating sleeve 66 drives the first stirring frame 67 to rotate. The first stirring frame 67 and the second stirring frame 69 rotate in opposite directions. Through the cooperation of the first stirring frame 67 and the second stirring frame 69, the sludge is stirred and homogenized, and the clumps in the sludge are broken up. The homogenized sludge is discharged downward through the sludge discharge pipe 62. The bottom end of the sludge discharge pipe 62 is connected to a modular booster pump station through a pipeline to perform preliminary pressurization and transmission of the sludge.

[0026] The modular booster pump station includes a sludge booster pump 7, a mounting base 71, a hoisting frame 72, positioning openings 73, a sludge suction pipe 74, and a sludge discharge pipe 75. The sludge booster pump 7 is fixedly installed on the top of the mounting base 71. The hoisting frame 72 is fixedly installed on the top of the mounting base 71 with bolts, allowing the pump station to be hoisted and moved. The positioning openings 73 are located at the four corners of the top of the mounting base 71. The mounting base 71 is fixed to the ground by inserting fixed steel pipes into the positioning openings 73 to prevent vibration from affecting the stability of the equipment during operation. The sludge booster pump 7 draws sludge into the pump station through the sludge suction pipe 74 and then pressurizes it. The pressurized sludge is discharged through the sludge discharge pipe 75. The discharged sludge is then transported along the pipeline to the next modular booster pump station for pressurization. The sludge can be transported over long distances through segmented pressurization.

[0027] Both the sludge suction pipe 74 and the sludge discharge pipe 75 are equipped with quick-connect devices 8 at their ends. The quick-connect devices 8 speed up the installation and connection of the pipes, and the pipe connection and installation work can be completed by a single person.

[0028] The quick-connect device 8 includes a connecting seat 81, a snap-fit ​​groove 82, a through bolt hole 83, and a mounting clamp 84. The snap-fit ​​groove 82 is located inside the connecting seat 81. During installation, the flange at the end of the pipe and the flange at the end of the sludge suction pipe 74 snap into the snap-fit ​​groove 82 for quick positioning. Bolts can then be inserted for fixing. A notch is provided at the bottom of the snap-fit ​​groove 82 to prevent residual sludge inside the groove from affecting the insertion of the flange. The mounting clamp 84 is bolted to the top of the connecting seat 81, fixing the connecting seat 81 to the end of the sludge suction pipe 74. At this time, the flange at the end of the sludge suction pipe 74 is snapped into the snap-fit ​​groove 82. The flange at the end of the pipe is then snapped into the snap-fit ​​groove 82, completing the initial fixing. The bolt holes of the two flanges are aligned, and then bolts are passed through the through bolt hole 83 and the mounting hole of the flange to install and fix the pipe.

[0029] Multiple modular booster pump stations are set up, and the installation spacing is controlled according to the requirements of transmission distance and transmission speed. The pipeline interface of the modular booster pump station has a quick-connect function, which can be quickly replaced in case of failure.

[0030] The manifold connector 42 is equipped with multiple manifold connectors, and the sludge discharge pipes of multiple cutter suction dredgers are connected to the manifold connector 42 respectively, which can treat the sludge of multiple dredgers.

[0031] The equipment is equipped with multiple sensors installed in different working areas to work together: Multi-vessel operation data acquisition terminal: The cutter suction dredging vessel is equipped with a high-precision GPS / BeiDou positioning module and a cutter suction head depth sensor to monitor the operation location and depth in real time, ensuring precise zoning. Pressure sensors and electromagnetic flow meters are installed on the mud delivery branch pipes of each vessel to monitor the delivery pressure and instantaneous flow rate of each branch pipe, and the data is transmitted to the central control system in real time.

[0032] Slurry conditioning and collection tank: Liquid level monitoring: A radar level gauge or ultrasonic level gauge is installed on the side wall of the multi-source mud collection homogenizing tank 1 to monitor the total liquid level in the tank in real time and prevent overflow or evacuation.

[0033] The core of concentration control is to install an online mud concentration meter (such as one based on gamma rays or ultrasound) at the outlet of the sedimentation zone and in the middle of the homogenization zone to monitor the mud density or solid content in real time. This is the most critical parameter for controlling the homogenization stirring intensity and output stability.

[0034] Condition monitoring involves installing current or torque sensors on the agitator motor to indirectly determine the viscosity of the slurry in the tank or whether the agitator is malfunctioning by monitoring load changes. Differential pressure sensors can be installed before and after the coarse screen to provide early warning of screen blockage.

[0035] Piping and modular booster pump stations: Main pipeline monitoring: Pressure transmitters and flow meters are installed on the main pipeline after the homogenizer outlet pump, forming the core monitoring point of the conveying system.

[0036] The pump station's intelligent unit includes pressure sensors installed at both the inlet and outlet of each modular booster pump station, enabling "pressure difference" monitoring of the station. The pump motor is equipped with vibration and temperature sensors for predictive maintenance. The isolation valves at the pump station's inlet and outlet are equipped with valve opening feedback sensors.

[0037] For pipeline safety, pressure monitoring points can be installed at regular intervals (e.g., 1 kilometer) along long pipelines to locate blockages or leaks. Pipeline leak detectors can be added at critical crossings or buried sections.

[0038] Central control system: All signals from the aforementioned sensors are connected to the central control system. This system is equipped with a data acquisition and monitoring platform, which not only enables data visualization but also embeds control logic. For example, it automatically adjusts the agitator speed based on concentration meter data; dynamically interlocks the start and stop of the booster pump station based on the main pipeline pressure; and automatically balances the operational intensity of each dredging vessel based on the flow rate of each branch pipe, thereby achieving adaptive and intelligent operation of the entire system.

[0039] A reservoir dredging method based on multiple parallel processes includes the following steps: S1. Preliminary investigation and dynamic zoning planning: Conduct an investigation of the reservoir and divide the dredging area into multiple work units based on the distribution of bottom sediment pollution, water depth, and ecologically sensitive areas (such as spawning areas); S2. Multiple pumping operations are carried out simultaneously, with cutter suction and primary conveying: Multiple cutter suction dredging vessels operate simultaneously within the planned unit, pumping the initially mixed sludge to the multi-source sludge collection and homogenization tank 1 on the shore through onboard pumps and independent branch pipes. S3, Primary Filtration: The sludge enters the sedimentation zone, where heavy materials such as stones settle under the gentle agitation of a low-speed horizontal stirring rod and are periodically discharged through the bottom valve; the clearer liquid and sludge in the upper layer flow towards the rear. S4. Assisted sedimentation: Large particles in the filtered sludge are removed using an auxiliary sedimentation device. S5. High-efficiency homogenization: The settled mud enters the homogenization zone and is homogenized and stirred by a homogenizing and stirring device to break up the agglomeration structure and form a homogeneous fluid with stable concentration, thereby reducing the transmission resistance. S6. Boosted Conveying: Based on the preset conveying distance and terrain elevation differences, modular booster pump stations are installed in advance at calculated locations along the pipeline. During the conveying process, the central control system monitors the pipeline pressure in real time. When the pressure is lower than the set value, the nearest downstream booster pump station is automatically started or accelerated; when the flow rate decreases or the pressure is too high, some pump stations are automatically slowed down or suspended, achieving intelligent and energy-saving "relay" conveying. The slurry is finally transported to a storage yard or treatment plant far away from the reservoir, completing the entire closed-loop treatment process.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reservoir dredging device based on multi-row parallel operation, comprising a multi-source mud collection and homogenization tank (1), a support base (2), and a lifting lug (3), characterized in that: The support base (2) is installed at the bottom of the multi-source mud collection homogenizing tank (1) for support, and the lifting lug (3) is installed at the top of the multi-source mud collection homogenizing tank (1) for lifting and moving. The multi-source mud collection homogenizing tank (1) is divided into three chambers: a storage chamber, a sedimentation chamber, and a homogenizing chamber. A filter device is installed above the sedimentation chamber. The filter device filters large impurities in the sludge into the storage chamber. The sludge after preliminary filtration enters the sedimentation chamber. An auxiliary sedimentation device is installed in the sedimentation chamber. During the movement of the sludge to the right, the agitation of the auxiliary sedimentation device makes the internal weight larger. Hard particles settle to the bottom to prevent subsequent transmission from increasing equipment wear and causing blockage. A sedimentation barrier plate is installed between the sedimentation chamber and the homogenization chamber. A homogenization stirring device is installed inside the homogenization chamber. The homogenization stirring device is bidirectional and can prevent eddies from forming during stirring. After homogenization, the resistance of subsequent transmission is reduced, preventing sedimentation and blockage in the pipeline. When the sludge homogenized inside the multi-source mud collection homogenization tank (1) is transported in the pipeline, a modular booster pump station is set in the middle of the long-distance transport pipeline to boost the transport efficiency and prevent blockage in the pipeline, thereby improving the transmission capacity.

2. The reservoir dredging device based on multi-row parallel operation according to claim 1, characterized in that: The filtration device includes a manifold box (41), a manifold pipe connector (42), a filter rod (43), a partition plate (44), and a waste cleaning door (45). The manifold box (41) is fixedly installed on the top of the multi-source mud collection homogenizing tank (1). The manifold pipe connector (42) is installed on the side of the manifold box (41). The partition plate (44) is installed inside the multi-source mud collection homogenizing tank (1). The left side of the partition plate (44) is a storage chamber, and the right side of the partition plate (44) is a sedimentation chamber. The right end of the filter rod (43) is fixedly installed to the right inner wall of the manifold box (41), and the left end of the filter rod (43) is fixedly installed to the right side wall of the partition plate (44). The partition plate (44) is installed at an angle. The waste cleaning door (45) is installed on the left end surface of the multi-source mud collection homogenizing tank (1). By opening the waste cleaning door (45), large impurities filtered out inside the storage chamber are cleaned.

3. A reservoir dredging device based on multiple parallel operations as described in claim 1, characterized in that: The auxiliary sedimentation device includes a sedimentation tank (51), a slag discharge pipe (52), a sedimentation motor (53), a horizontal rotating shaft (54), and a sedimentation stirring rod (55). The sedimentation tank (51) is fixedly installed at the bottom of the multi-source mud collection homogenizing tank (1). The slag discharge pipe (52) is installed at the bottom of the sedimentation tank (51). A control valve is installed at the bottom of the slag discharge pipe (52). The sedimentation motor (53) is fixedly installed on the front side wall of the multi-source mud collection homogenizing tank (1). The horizontal rotating shaft (54) is rotatably installed on the inner wall of the multi-source mud collection homogenizing tank (1) through a bearing. The horizontal rotating shaft (54) is horizontally installed. The output end of the sedimentation motor (53) is connected to the end of the horizontal rotating shaft (54) for transmission. The sedimentation motor (53) drives the horizontal rotating shaft (54) to rotate. The sedimentation stirring rod (55) is installed on the surface of the horizontal rotating shaft (54).

4. A reservoir dredging device based on multiple parallel processes according to claim 1, characterized in that: The homogenizing and stirring device includes a homogenizing tank (61), a sludge discharge pipe (62), a power box (63), a first stirring motor (64), a second stirring motor (65), a rotating sleeve (66), a first stirring frame (67), a rotating shaft frame (68), and a second stirring frame (69). The homogenizing tank (61) is fixedly installed at the bottom of the multi-source mud collection homogenizing tank (1). The sludge discharge pipe (62) is installed at the bottom of the homogenizing tank (61) to discharge the homogenized sludge. The power box (63) is fixedly installed at the top of the multi-source mud collection homogenizing tank (1). The first stirring frame (67) is fixedly installed on the surface of the rotating sleeve (66). The rotating shaft frame (68) is rotatably installed on the inner side of the rotating sleeve (66) through a bearing. The second stirring frame (69) is fixedly installed on the outer side of the bottom end of the rotating shaft frame (68). The top end of the rotating sleeve (66) is connected to the rotating sleeve through a bearing. The first agitator (64) is rotatably mounted on the top of the power box (63). The top end of the rotating sleeve (66) extends into the power box (63). The second agitator motor (65) is fixedly mounted on the top of the power box (63). The output end of the second agitator motor (65) passes through the power box (63) and is connected to the top end of the rotating shaft frame (68) for transmission. The rotating shaft frame (68) is driven to rotate by the second agitator motor (65). The first agitator motor (64) is fixedly mounted on the top of the power box (63). The output end of the first agitator motor (64) extends into the power box (63). A gear is installed on the output end of the first agitator motor (64). A gear ring is fixedly installed on the outer wall of the rotating sleeve (66). The gear meshes with the gear ring. When the first agitator motor (64) rotates, the rotating sleeve (66) is driven to rotate by the cooperation of the gear and the gear ring. The rotation directions of the rotating sleeve (66) and the rotating shaft frame (68) are opposite.

5. A reservoir dredging device based on multiple parallel operations as described in claim 1, characterized in that: The modular booster pump station includes a sludge booster pump (7), a mounting base (71), a hoisting frame (72), a positioning opening (73), a sludge suction pipe (74), and a sludge discharge pipe (75). The sludge booster pump (7) is fixedly installed on the top of the mounting base (71), and the hoisting frame (72) is fixedly installed on the top of the mounting base (71) by bolts. The positioning opening (73) is opened at the four corners of the top of the mounting base (71). The sludge booster pump (7) pumps sludge into the interior through the sludge suction pipe (74) and then pressurizes it. The pressurized sludge is discharged through the sludge discharge pipe (75).

6. A reservoir dredging device based on multiple parallel processes according to claim 5, characterized in that: The ends of the sludge suction pipe (74) and the sludge discharge pipe (75) are both equipped with quick-connect devices (8).

7. A reservoir dredging device based on multiple parallel processes according to claim 6, characterized in that: The quick-connect device (8) includes a connector (81), a snap-fit ​​groove (82), a through screw hole (83), and a mounting clamp (84). The snap-fit ​​groove (82) is located inside the connector (81), and the mounting clamp (84) is installed on the top of the connector (81) by bolts.

8. A reservoir dredging device based on multiple parallel processes according to claim 5, characterized in that: Multiple modular booster pump stations are installed, and the installation spacing is controlled according to the requirements of transmission distance and transmission speed.

9. A reservoir dredging device based on multiple parallel processes according to claim 2, characterized in that: The manifold connector (42) is provided in multiple ways.

10. A reservoir dredging method based on multiple parallel processes, comprising the reservoir dredging device based on multiple parallel processes as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Preliminary investigation and dynamic zoning planning: Conduct an investigation of the reservoir and divide the dredging area into multiple work units based on the distribution of sediment pollution, water depth, and ecologically sensitive areas; S2. Multiple pumping operations are carried out simultaneously, with simultaneous sludge suction and primary transport: Multiple sludge suction vessels operate simultaneously within the planned unit, and the initially mixed mud is pumped to the multi-source mud collection homogenizing tank (1) on the shore through the ship-mounted pump and independent branch pipe. S3, Primary Filtration: The sludge enters the sedimentation zone, where heavy materials such as stones settle under the gentle agitation of a low-speed horizontal stirring rod and are periodically discharged through the bottom valve; the clearer liquid and sludge in the upper layer flow towards the rear. S4. Assisted sedimentation: Large particles in the filtered sludge are removed using an auxiliary sedimentation device. S5. High-efficiency homogenization: The settled mud enters the homogenization zone and is homogenized and stirred by a homogenizing and stirring device to break up the agglomeration structure and form a homogeneous fluid with stable concentration, thereby reducing the transmission resistance. S6. Boosting and conveying: Based on the preset conveying distance and terrain elevation difference, modular booster pump stations are installed in advance at calculated locations along the pipeline. The slurry is eventually conveyed to a storage yard or treatment plant far away from the reservoir, completing the closed-loop treatment process.

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