Ecological dredging device in front of reservoir dam and using method

Abstract

The invention discloses an ecological desilting device in front of a reservoir dam and a using method, and belongs to the technical field of ecological desilting. The device comprises a protective cover, a slurry enclosure mechanism and a stirring mechanism, the protective cover comprises a top baffle plate and a peripheral baffle plate which is enclosed with the top baffle plate to form a closed cavity; an opening is formed in the middle of the top baffle, the stirring mechanism comprises a slurry suction pump installed in the opening, a telescopic suction pipe connected with the suction end of the slurry suction pump and a discharge pipe connected with the discharge end of the slurry suction pump, and the telescopic suction pipe is sleeved with a telescopic smashing pipe; the mud enclosure mechanism comprises a rubber sewage intercepting curtain and a foldable anti-fouling curtain, the rubber sewage intercepting curtain is annularly arranged at the bottom of the peripheral baffle, the foldable anti-fouling curtain comprises a front curtain part and a rear curtain part, the foldable anti-fouling curtain covers the opening, the front curtain part is connected with one side of the stirring mechanism, and the rear curtain part is connected with the other side of the stirring mechanism. The device can solve the problems of water quality deterioration and aggravated water pollution caused by disturbance to surrounding water when bottom sludge is removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological dredging, in particular to a reservoir dam front ecological dredging device and a use method thereof. BACKGROUND

[0002] As the core infrastructure of China's water resources management system, reservoirs play an irreplaceable strategic role in the regulation of basin water resources, regional flood control and disaster reduction, and ecological system regulation, and are directly related to the national water security pattern and the sustainable development of the economy and society. However, affected by long-term sediment deposition, a large number of reservoirs in China are facing the grim situation of continuous shrinkage of effective storage capacity and systematic decline of comprehensive functions. Under this background, scientifically promoting reservoir dredging engineering has become a key engineering measure to restore the design function of the reservoir and ensure the sustainable use of water resources.

[0003] Implementing the reservoir ecological dredging engineering has significant comprehensive benefits: on the one hand, it can effectively restore the design capacity of the reservoir, ensure the full play of the comprehensive benefits of flood control, water supply, power generation, etc., and at the same time, it can significantly reduce the flood control pressure of the downstream basin; on the other hand, by innovating the mode of sediment resource utilization, the sediment waste in traditional dredging engineering is converted into a useful resource, which not only avoids the adverse effects of traditional sediment discharge on the hydrological regime and ecological system of the downstream river channel, but also creates new economic value. This engineering measure has important practical significance for promoting the sustainable development of water safety, ecological safety and economic society in the basin.

[0004] For reservoirs that undertake the task of urban water supply and irrigation, dredging operations must strictly control water quality disturbance. Traditional dredging with a cutter suction dredger uses an open cutter, which easily causes the bottom mud to be stirred violently during operation, resulting in the diffusion of sediment pollutants, the destruction of the balance of the bottom mud ecological system, and the formation of secondary pollution. SUMMARY

[0005] The purpose of the present application is to overcome the deficiencies in the prior art and provide a reservoir dam front ecological dredging device and a use method, which can solve the problem of water quality deterioration and further aggravation of water pollution caused by disturbance of water around the bottom mud during current reservoir ecological dredging.

[0006] To achieve the above-mentioned purpose, the present application is implemented by using the following technical solutions: On the one hand, the present application provides a reservoir dam front ecological dredging device, which comprises a protective cover, a mud enclosure mechanism and an agitating mechanism. The protective cover comprises a top baffle and a four-around baffle forming a closed cavity with the top baffle. The top baffle is provided with an opening in the middle, the stirring mechanism comprises a mud suction pump installed in the opening, a telescopic suction pipe connected with the suction end of the mud suction pump, and a discharge pipe connected with the discharge end of the mud suction pump, and a telescopic stirring pipe is sleeved on the telescopic suction pipe; The mud surrounding mechanism comprises a rubber sewage intercepting curtain and a foldable sewage intercepting curtain, the rubber sewage intercepting curtain is annularly arranged at the bottom of the four surrounding baffles, the foldable sewage intercepting curtain comprises a front curtain part and a rear curtain part, the foldable sewage intercepting curtain covers the opening, the front curtain part is connected with one side of the stirring mechanism, and the rear curtain part is connected with the other side of the stirring mechanism.

[0007] Optionally, the four surrounding baffles comprise a front side baffle, a rear side baffle, a left side baffle and a right side baffle. The front side baffle is rotatably connected to the front edge of the top baffle through a hinge structure, and the rear side baffle is rotatably connected to the rear edge of the top baffle through a hinge structure. The left side baffle is connected to the left edge of the top baffle, and the right side baffle is connected to the right edge of the top baffle.

[0008] Optionally, the front side baffle is in an arc structure, and the rear side baffle is in a rectangular structure. The left side baffle and the right side baffle are both rectangular parts and quarter-elliptical arc parts connected with each other, and the connection ends of the left side baffle and the right side baffle with the front side baffle are both elliptical arc parts which are matched with the arc structure of the front side baffle.

[0009] Optionally, reset springs are arranged between the front side baffle and the left side baffle and the right side baffle respectively, for controlling the overturning of the front side baffle out of the protective cover relative to the left side baffle and the right side baffle. Reset springs are arranged between the rear side baffle and the left side baffle and the right side baffle respectively, for controlling the overturning of the rear side baffle into the protective cover relative to the left side baffle and the right side baffle.

[0010] Optionally, the top baffles on both sides of the opening are provided with sliding rails for the sliding of the stirring mechanism. The mud suction pump is connected with the sliding rail through a pulley, and the sliding rail is parallel to the opening and has the same length as the opening.

[0011] Optionally, the stirring mechanism further comprises a motor control mechanism and a rotary drive mechanism. The motor control mechanism is electrically connected with the mud suction pump, and the rotary drive mechanism is connected with the motor control mechanism at the upper part and connected with the telescopic stirring pipe at the lower part.

[0012] Optionally, the telescopic stirring pipe is provided with a filter screen and a rubber suction cover at the end away from the top baffle.

[0013] Optionally, the device further comprises a plurality of walking mechanisms, each of which comprises an external support, a guide rail, a hydraulic rod, a track drive motor and a track structure. The external support is mounted on the left and right sides of the protective cover, the guide rail is mounted on the bottom of the left and right sides of the protective cover, and the guide rail and the lower end of the vertical section of the external support correspondingly located on the guide rail constitute a sliding guide pair. The left and right ends of the track drive motor are slidably embedded in the groove of the guide rail. The upper end of the hydraulic rod is connected to the external support, and the lower end of the hydraulic rod is connected to the track drive motor. The track structure is wrapped outside the two track drive motors.

[0014] In another aspect, the present application provides a method for using the ecological dredging device in front of the reservoir dam, characterized by being used for executing the device of the first aspect, comprising: Place the device on the silt surface in front of the reservoir dam, and form a closed working space between the protective cover, the rubber sewage screen and the silt. Start the stirring mechanism to drive the telescopic stirring pipe to rotate and stir the silt in the closed working space, and drive the slurry suction pump to suck the slurry sucked into the telescopic suction pipe through the discharge pipe and discharge it to the reservoir bank. Control the stirring mechanism to move along the opening to stir and suck different areas in the closed working space and complete the dredging operation of the area.

[0015] Compared with the prior art, the present application has the following beneficial effects: The present application can effectively block the diffusion of particulate matter in the silt disturbance process by forming a closed cavity surrounded by the top baffle and the surrounding baffle of the protective cover, and combining the slurry separation mechanism, which can significantly reduce the secondary pollution to the water quality of the reservoir and protect the ecological safety of the water body; the stirring mechanism is provided in the opening at the top of the protective cover, the telescopic suction pipe is built-in in the telescopic stirring pipe of the stirring mechanism, which avoids the violent stirring caused by the open cutter, can realize synchronous suction while stirring the silt, significantly improves the efficiency and continuity of the dredging operation, can realize the stirring and removal of the bottom silt in a partitioned and orderly manner, not only improves the comprehensiveness and thoroughness of the dredging operation, but also avoids the cleaning blind area, thereby significantly improves the dredging efficiency and engineering quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the ecological dredging device in front of the reservoir dam in an embodiment of the present application is shown. Figure 2 The structure of the ecological dredging device in front of the reservoir dam in a second embodiment of the present application is shown. Figure 3The structural schematic view of the ecological reservoir dam front dredging device in the third embodiment is shown. In the figure: 1-1, front baffle; 1-2, rear baffle; 1-3, top baffle; 1-4, left baffle; 1-5, right baffle; 2, slide rail; 2-1, slide rail one; 2-2, slide rail two; 3, motor control mechanism; 4, foldable anti-fouling curtain; 4-1, front curtain part; 4-2, rear curtain part; 5, mud suction pump; 6, discharge pipe; 7, rotary drive mechanism; 8, telescopic crushing pipe; 9, telescopic suction pipe; 10, rubber suction shield; 11, pulley; 11-1, pulley one; 11-2, pulley two; 12-1, hinge structure one; 12-2, hinge structure two; 12-3, hinge structure three; 12-4, hinge structure four; 13-1, reset spring one; 13-2, reset spring two; 13-3, reset spring three; 13-4, reset spring four; 13-5, reset spring five; 13-6, reset spring six; 13-7, reset spring seven; 13-8, reset spring eight; 14-1, external support one; 14-2, external support two; 15-1, guide rail one; 15-2, guide rail two; 15-3, guide rail three; 15-4, guide rail four; 16-1, hydraulic rod one; 16-2, hydraulic rod two; 16-3, hydraulic rod three; 16-4, hydraulic rod four; 17-1, track drive motor one; 17-2, track drive motor two; 18-1, track structure one; 19, rubber sewage curtain; 19-1, rubber sewage curtain one; 19-2, rubber sewage curtain two; 19-3, rubber sewage curtain three; 19-4, rubber sewage curtain four; 20, opening. DETAILED DESCRIPTION

[0017] The technical scheme of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical scheme of the present application, and are not limitations of the technical scheme of the present application. In the case of no conflict, the technical features in the embodiments and the embodiments can be combined with each other.

[0018] The term "and / or", only describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " generally represents that the front and rear associated objects are in an "or" relationship.

[0019] Embodiment 1

[0020] As Figures 1-3 shown, the present embodiment introduces an ecological reservoir dam front dredging device, which comprises a protective cover, a mud enclosure mechanism, an agitation mechanism; The protective cover comprises a top baffle 1-3 and a four-around baffle surrounding the top baffle 1-3 to form a closed cavity. The top baffle 1-3 has an opening 20 in the middle. The stirring mechanism includes a mud suction pump 5 installed in the opening 20, a retractable suction pipe 9 connected to the suction end of the mud suction pump 5, and a discharge pipe 6 connected to the discharge end of the mud suction pump 5. A retractable crushing pipe 8 is sleeved on the retractable suction pipe 9. The mud containment mechanism includes a rubber intercepting curtain 19 and a foldable anti-fouling curtain 4. The rubber intercepting curtain 19 is arranged around the bottom of the surrounding baffles. The foldable anti-fouling curtain 4 includes a front curtain part 4-1 and a rear curtain part 4-2. The foldable anti-fouling curtain 4 covers the opening 20. The front curtain part 4-1 is connected to one side of the agitation mechanism, and the rear curtain part 4-2 is connected to the other side of the agitation mechanism.

[0021] This embodiment utilizes a sealed cavity formed by the top and surrounding baffles of the protective cover, combined with a mud containment mechanism, to effectively block the diffusion of particulate matter during sludge disturbance, significantly reducing secondary pollution to reservoir water quality and ensuring the ecological safety of the water body. The agitation mechanism located at the top opening of the protective cover incorporates a retractable suction pipe within the retractable agitation tube, avoiding the violent agitation caused by open-type cutters. This allows for simultaneous suction while agitating the sludge, significantly improving the efficiency and continuity of dredging operations, and enabling the zoned and orderly agitation and removal of bottom sludge.

[0022] Example 2

[0023] like Figures 1-3 As shown in the figure, this embodiment introduces an ecological dredging device in front of a reservoir dam. Figure 1 This is the left view of the device. Figure 2 This is the front view of the device. Figure 3 This is a top view of the device, which includes a protective cover, a stirring mechanism, a mud containment mechanism, and a traveling mechanism. The specific structure is as follows: The protective cover includes a front baffle 1-1, a rear baffle 1-2, a top baffle 1-3, a left baffle 1-4, and a right baffle 1-5. The top baffle 1-3 is connected to the front baffle 1-1 and the rear baffle 1-2 respectively through a hinge structure. like Figures 1-3 As shown, the front baffle 1-1 is a smoothly transitioning arc-shaped structure. Its upper edge is rotatably connected to the front edge of the top baffle 1-3 through hinge structure 12-1 and hinge structure 12-2 respectively. The cross-section of the front baffle 1-1 is a smoothly transitioning arc shape. The rear baffle 1-2 has a rectangular structure. The two ends of the upper edge of the rear baffle 1-2 are rotatably connected to the rear edge of the top baffle 1-3 through hinge structure three 12-3 and hinge structure four 12-4. The left side baffle 1-4 is connected with the front side baffle 1-1 and the top baffle 1-3, and the right side baffle 1-5 is connected with the front side baffle 1-1 and the top baffle 1-3; The right side baffle 1-5 is connected with the front side baffle 1-1 and the top baffle 1-3, and the right side baffle 1-5 is connected with the front side baffle 1-1 and the top baffle 1-3; The reset spring is fixedly connected with the front side baffle 1-1, the rear side baffle 1-2, the left side baffle 1-4 and the right side baffle 1-5, and exerts a pulling force on the front side baffle 1-1 towards the outside of the protective cover 1, so that the front side baffle 1-1 is tightly attached to the mud interface, and exerts a restraining force on the rear side baffle 1-2 towards the inside of the protective cover 1, so as to prevent the rear side baffle 1-2 from opening too much outwardly; The front side baffle 1-1 and the left side baffle 1-4 are provided with the reset spring one 13-1 at the upper part and the reset spring two 13-2 at the lower part, and the front side baffle 1-1 and the right side baffle 1-5 are provided with the reset spring five 13-5 at the upper part and the reset spring six 13-6 at the lower part, so as to control the turning of the front side baffle 1-1 relative to the left side baffle 1-4 and the right side baffle 1-5 towards the outside of the protective cover 1; The rear side baffle 1-2 and the left side baffle 1-4 are provided with the reset spring three 13-3 at the upper part and the reset spring four 13-4 at the lower part, and the rear side baffle 1-2 and the right side baffle 1-5 are provided with the reset spring seven 13-7 at the upper part and the reset spring eight 13-8 at the lower part, so as to control the turning of the rear side baffle 1-2 relative to the left side baffle 1-4 and the right side baffle 1-5 towards the inside of the protective cover 1; The top baffle 1-3 is provided with an opening 20 in the middle part, and the opening 20 is parallel to the left side baffle 1-4 and the right side baffle 1-5; the top baffle 1-3 is further provided with a slide rail 2 which is parallel to the opening 20 and has the same length as the opening 20, and the slide rail 2 includes a slide rail one 2-1 installed on the right side of the opening 20 and a slide rail two 2-2 installed on the left side of the opening 20; The front side baffle 1-1, the rear side baffle 1-2, the top baffle 1-3, the left side baffle 1-4 and the right side baffle 1-5 form a closed cavity.

[0024] As shown in Figures 1-3 The stirring mechanism includes a motor control mechanism 3, a mud suction pump 5, a discharge pipe 6, a rotary drive mechanism 7, a telescopic stirring pipe 8, a telescopic suction pipe 9 and a rubber suction cover 10. The mud suction pump 5 is installed in the opening 20 and connected with the slide rail 2 through the pulley 11, which includes pulley one 11-1 and pulley two 11-2, and the pulley one 11-1 is connected with the slide rail one 2-1, and the pulley two 11-2 is connected with the slide rail two 2-2, and can move along the slide rail 2 to realize the partition operation, the suction end of the mud suction pump 5 is connected with the telescopic suction pipe 9 for sucking the mud, and the discharge end is connected with the discharge pipe 6 for conveying the mud to the bank; The telescopic stirring pipe 8 is sleeved outside the telescopic suction pipe 9, the telescopic stirring pipe 8 is responsible for crushing and stirring, the built-in telescopic suction pipe 9 is responsible for synchronous suction, the telescopic stirring pipe 8 is provided with a filter screen away from the end of the top baffle 1-3, which can intercept large particle impurities, and the telescopic stirring pipe 8 is also provided with a rubber suction shield 10 away from the end of the top baffle 1-3, which is made of wear-resistant flexible material, can buffer the bottom impact, protect the internal components, and improve the durability of the equipment; The motor control mechanism 3 is also erected on the slide rail 2 and is electrically connected with the mud suction pump 5, which is used for unified control of the operation of the mud suction pump 5 and the movement of the device, and is the core of realizing automatic dredging; The upper part of the rotary drive mechanism 7 is drivingly connected with the motor control mechanism 3, and the lower part is connected with the telescopic stirring pipe 8, which is used for converting the motor power into the low-speed large-torque rotary motion of the telescopic stirring pipe 8, so as to effectively stir the sludge.

[0025] As shown in Figures 1-3 The mud isolation mechanism includes a rubber sewage screen 19 and a foldable pollution prevention curtain 4. The rubber sewage screen 19 is annularly arranged at the bottom of the front baffle 1-1, the rear baffle 1-2, the left baffle 1-4 and the right baffle 1-5. Among them, the rubber sewage screen three 19-3 is installed at the bottom of the front baffle 1-1, the rubber sewage screen four 19-4 is installed at the bottom of the rear baffle 1-2, the rubber sewage screen one 19-1 is installed at the bottom of the left baffle 1-4, and the rubber sewage screen two 19-2 is installed at the bottom of the right baffle 1-5. The flexible curtain body is closely combined with the reservoir bottom sludge after the protection cover is settled, a bottom contact type seal is formed, and the first barrier for preventing the leakage of pollutants is constituted; The foldable pollution prevention curtain 4 is divided into two pieces and covers the opening 20, including a front curtain part 4-1 and a rear curtain part 4-2, the front curtain part 4-1 is connected with the front side of the stirring mechanism, the rear curtain part 4-2 is connected with the rear side of the stirring mechanism, and the second barrier for preventing the leakage of pollutants is constituted; The foldable pollution prevention curtain 4 can be folded and linked with the movement of the mud suction pump 5, specifically: When the mud suction pump 5 moves forward, the front curtain part 4-1 is folded and contracted, and the rear curtain part 4-2 is unfolded, the foldable pollution prevention curtain 4 always keeps the opening 20 closed and shielded, keeps flat and sealed during operation, and is compactly folded through folding during movement, which has high sealing efficiency and moving convenience.

[0026] As shown in Figure 3 , the walking mechanism is provided with four groups, which are respectively installed on the front and rear bottom outer sides of the left side baffle 1-4, the front and rear bottom outer sides of the right side baffle 1-5, and the walking mechanism includes an external support, a guide rail, a hydraulic rod, a track drive motor and a track structure. Take one group of walking mechanism installed on the front bottom outer side of the left side baffle 1-4 as an example: In one group of walking mechanism, the external support includes external support one 14-1 and external support two 14-2, the guide rail includes guide rail one 15-1, guide rail two 15-2, guide rail three 15-3 and guide rail four 15-4, the hydraulic rod includes hydraulic rod one 16-1, hydraulic rod two 16-2, hydraulic rod three 16-3 and hydraulic rod four 16-4, the track drive motor includes track drive motor one 17-1 and track drive motor two 17-2, and the track structure is track structure one 18-1; The external support one 14-1 and the external support two 14-2 are installed on the front outer side of the left side baffle 1-4, which is used to provide structural support and installation basis; The guide rail one 15-1 and the guide rail two 15-2 are installed on the front bottom outer side of the left side baffle 1-4, and the guide rail three 15-3 and the guide rail four 15-4 are installed on the front bottom outer side of the left side baffle, which are located behind the guide rail one 15-1 and the guide rail two 15-2; The guide rail one 15-1, the guide rail two 15-2 and the lower end of the vertical section of the external support one 14-1 corresponding to the guide rail one 15-1 and the guide rail two 15-2 constitute a sliding guide pair, and the guide rail three 15-3, the guide rail four 15-4 and the lower end of the vertical section of the external support two 14-2 corresponding to the guide rail three 15-3 and the guide rail four 15-4 constitute another sliding guide pair; The upper end of the hydraulic rod one 16-1 and the hydraulic rod two 16-2 is connected with the external support one 14-1, and the lower end is connected with the track drive motor one 17-1, and the upper end of the hydraulic rod three 16-3 and the hydraulic rod four 16-4 is connected with the external support two 14-2, and the lower end is connected with the track drive motor two 17-2, which is used to realize the position adjustment of the track drive motor one 17-1 and the track drive motor two 17-2 in the vertical direction; The left and right ends of the track drive motor one 17-1 are slidably embedded in the groove between the guide rail one 15-1 and the guide rail two 15-2, and are connected with the lower end of the hydraulic rod one 16-1 and the hydraulic rod two 16-2, and the left and right ends of the track drive motor two 17-2 are slidably embedded in the groove between the guide rail three 15-3 and the guide rail four 15-4, and are connected with the lower end of the hydraulic rod three 16-3 and the hydraulic rod four 16-4; The track structure one 18-1 covers the outside of the track drive motor one 17-1 and the track drive motor two 17-2, significantly reduces the ground pressure by increasing the ground contact area, thereby effectively improves the passability and adaptability of the device on soft silt foundation, and prevents the body from sinking. The track structure 18-1 is directly driven by the track drive motor 17-1 and the track drive motor 17-2 to move, which has the characteristics of short power transmission path, high transmission efficiency and compact structure, and can stably and reliably realize the travel and steering control of the dredging device.

[0027] The rest of the groups of walking mechanisms are similar and will not be repeated here.

[0028] After completing the dredging work in an area, the hydraulic rod is adjusted to the fully extended state by the electric control method, and the whole is driven on the sludge surface by the walking mechanism driving device to the next area to be operated.

[0029] Example 3

[0030] Based on example 1 or 2, this embodiment introduces a use method of the reservoir dam front dredging device, including the following steps: Step one: place the device on the sludge surface in front of the reservoir dam, and form a closed operation space between the protective cover 1, the rubber sewage screen 19, the foldable pollution screen 4 and the sludge; Step two: start the stirring mechanism to drive the extendable stirring pipe 8 to rotate and stir the sludge in the closed operation space, and drive the slurry suction pump 5 to suck the slurry sucked by the extendable suction pipe 9 through the discharge pipe 6 to the reservoir bank; Step three: control the stirring mechanism to move along the opening 20 to stir and suck different areas in the closed operation space, and complete the dredging work in the area.

[0031] The embodiments of the application are described above in combination with the drawings, but the application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, which are all within the protection of the application.

Claims

1. An ecological dredging device for reservoir dam front, characterized in that, Includes protective covers, mud containment mechanisms, and agitation mechanisms; The protective cover includes a top baffle and surrounding baffles that enclose the top baffle to form a sealed cavity; The top baffle has an opening in the middle, and the stirring mechanism includes a mud suction pump installed in the opening, a retractable suction pipe connected to the suction end of the mud suction pump, and a discharge pipe connected to the discharge end of the mud suction pump. A retractable agitator is sleeved on the retractable suction pipe. The mud containment mechanism includes a rubber intercepting curtain and a foldable anti-fouling curtain. The rubber intercepting curtain is arranged around the bottom of the surrounding baffles. The foldable anti-fouling curtain includes a front curtain and a rear curtain. The foldable anti-fouling curtain covers the opening. The front curtain is connected to one side of the agitation mechanism, and the rear curtain is connected to the other side of the agitation mechanism.

2. The ecological dredging device in front of the reservoir dam according to claim 1, characterized in that, The surrounding baffles include a front baffle, a rear baffle, a left baffle, and a right baffle; The front baffle is rotatably connected to the front edge of the top baffle via a hinge structure, and the rear baffle is rotatably connected to the rear edge of the top baffle via a hinge structure. The left baffle is connected to the left edge of the top baffle, and the right baffle is connected to the right edge of the top baffle.

3. The ecological dredging device in front of the reservoir dam according to claim 2, characterized in that, The front baffle is an arc-shaped structure, and the rear baffle is a rectangular structure; The left and right baffles are both rectangular sections and quarter-elliptical arc sections that are connected to each other. The connection ends of the left and right baffles with the front baffle are both elliptical arc sections, which are adapted to the arc-shaped structure of the front baffle.

4. The ecological dredging device in front of the reservoir dam according to claim 2, characterized in that, The front baffle is provided with a return spring between the left baffle and the right baffle, which is used to control the front baffle to flip outward relative to the left baffle and the right baffle. The rear baffle is provided with a return spring between itself and the left and right baffles, which is used to control the rear baffle to flip into the protective cover relative to the left and right baffles.

5. The ecological dredging device in front of the reservoir dam according to claim 1, characterized in that, The top baffles on both sides of the opening are equipped with slide rails for the agitation mechanism to slide. The mud suction pump is connected to a slide rail via pulleys, and the slide rail is parallel to the opening and has the same length as the opening.

6. The ecological dredging device in front of the reservoir dam according to claim 5, characterized in that, The stirring mechanism also includes a motor control mechanism and a rotary drive mechanism; The motor control mechanism is electrically connected to the mud suction pump, and the upper part of the rotary drive mechanism is connected to the motor control mechanism, and the lower part is connected to the retractable crushing pipe.

7. The ecological dredging device in front of the reservoir dam according to claim 1, characterized in that, The retractable pulverizing tube is equipped with a filter screen and a rubber suction cover at the end away from the top baffle.

8. The ecological dredging device in front of the reservoir dam according to claim 1, characterized in that, It also includes multiple walking mechanisms, each of which includes an external support, guide rails, hydraulic rods, a track drive motor, and a track structure; The external bracket is installed on the left and right sides of the protective cover, and the guide rail is installed on the bottom of the left and right sides of the protective cover. The guide rail and the lower end of the vertical section of the external bracket corresponding to the guide rail form a sliding guide pair. The left and right ends of the track drive motor can be slidably embedded in the grooves of the guide rail; The upper end of the hydraulic rod is connected to an external bracket, and the lower end is connected to a track drive motor. The track structure is covered by the two track drive motors.

9. A method for using an ecological dredging device in front of a reservoir dam, characterized in that, For performing the apparatus according to any one of claims 1-8, comprising: The device is placed on the silt surface in front of the reservoir dam, and the protective cover, rubber intercepting curtain, foldable anti-fouling curtain and silt form a closed working space. Start the stirring mechanism to drive the extendable stirring pipe to rotate and stir the silt in the enclosed working space. At the same time, drive the mud suction pump to discharge the mud sucked in by the extendable suction pipe to the reservoir bank through the discharge pipe. The stirring mechanism is controlled to move along the opening to stir and suck up different areas in the enclosed working space, thereby completing the dredging operation in that area.

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