River regulation construction device and process

Abstract

The invention relates to the technical field of river channel dredging, in particular to a river channel treatment construction device and a construction process, the river channel treatment construction device comprises an excavator bucket, the excavator bucket comprises a bucket bottom right opposite to a bucket opening and four side plates surrounding the bucket bottom, the bucket bottom is slidably connected with a push bucket facing the bucket opening and having the same shape as the bucket bottom, and a hydraulic rod is installed outside the bucket bottom; one end of the hydraulic rod is connected with the excavator bucket, the other end of the hydraulic rod is connected with the push bucket, and an anti-sticking plastic film is fixed to the side, facing a bucket opening, of the push bucket, extends out of the periphery of the push bucket and is attached to the four side plates respectively. The anti-sticking plastic film protects the inner wall of the excavator bucket, the viscosity between sludge and the anti-sticking plastic film is weak, the sludge is prone to falling off, the pushing bucket pushes the sludge out of the excavator bucket, the sludge originally extruded in the excavator bucket stretches out of a bucket opening, the sludge is not subjected to extrusion force of side plates of the excavator bucket on the sludge any more, the pressure borne by the sludge is reduced, and the sludge is prevented from falling off. And therefore, the friction force between the sludge and the anti-sticking plastic film is reduced, the sludge can fall off more conveniently, and the construction efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of river dredging, and in particular to a river regulation construction device and construction technology. Background Art

[0002] In river sediment treatment, dredging and silt removal are important measures to ensure the smooth flow of rivers and reduce water pollution. The accumulation of silt in rivers will also affect the flood control, waterlogging drainage, disaster reduction capabilities and safety guarantee capabilities of rivers.

[0003] Existing river dredging is basically carried out by excavators to dredge the silt in the river. For related technologies, reference can be made to the Chinese patent with the publication number CN118997262A, which discloses a non-secondary pollution dredging and silt removal construction device and method for river ecological environment restoration. The bucket is extended into the river to clean the silt in the river, and the cleaned silt is conveyed into a metering valve. The metering valve controls a certain amount of silt to be shot into the lower mold. After the lower mold is filled with silt, the metering valve is closed, and then the upper mold is pressed down onto the lower mold to press the silt in the lower mold, so that the silt in the lower mold drains water and is pressed into the shape of a mud cake. Then the lower mold is tilted to pour out the mud cake for re-pressing the mud cake. The pressed mud cake is collected and stored for subsequent silt cleaning, so as to remove the excess water from the silt and make the silt into the shape of a mud cake for placement.

[0004] The digging bucket dredges the silt and then pours the silt into the silt cleaning device for cleaning. However, silt usually has strong viscosity. When the silt is poured from the digging bucket into the cleaning device, the silt is likely to stick to the inside of the digging bucket, affecting the construction efficiency. Summary of the Invention

[0005] In order to improve the construction efficiency, this application provides a river regulation construction device and construction technology.

[0006] One object of this application is to provide a river regulation construction device, adopting the following technical solution: A river regulation construction device includes a digging bucket. The digging bucket includes a bucket bottom facing the bucket opening and four side plates surrounding the bucket bottom. A pushing bucket with the same shape as the bucket bottom and facing the bucket opening is slidably connected to the bucket bottom. A plurality of hydraulic rods passing through the bucket bottom are installed outside the bucket bottom. One end of the hydraulic rod is connected to the digging bucket, and the other end is connected to the pushing bucket. An anti-sticking plastic film is fixed on the side of the pushing bucket facing the bucket opening. The anti-sticking plastic film extends from the periphery of the pushing bucket and is respectively attached to the four side plates.

[0007] By adopting the above technical solution, before the digging bucket digs for silt in the river channel, it hydraulically contracts, and the pushing bucket presses against the inner wall of the bucket bottom to ensure the space inside the digging bucket. The digging bucket digs for silt, and the silt fills the digging bucket. Since the inner wall of the digging bucket is covered with an anti-sticking plastic film, the anti-sticking plastic film isolates the silt and the digging bucket. When the digging bucket is full of silt and is poured into the cleaning device, the bucket opening faces the cleaning device, the hydraulic rod extends, and the pushing bucket pushes the silt towards the bucket opening. The silt gradually extends out of the bucket opening until it falls into the cleaning device. The anti-sticking plastic film protects the inner wall of the digging bucket. The adhesion between the silt and the anti-sticking plastic film is weak, and the silt is easy to fall off. Moreover, the pushing bucket pushes the silt out of the digging bucket, and the silt that was originally squeezed in the digging bucket extends out of the bucket opening. The silt no longer receives the squeezing force of the side plate of the digging bucket on the silt, and the pressure on the silt becomes smaller. As a result, the friction force between the silt and the anti-sticking plastic film also becomes smaller, making it easier for the silt to fall off, thereby improving the construction efficiency.

[0008] Preferably, four winding rollers are rotatably connected to the position of the digging bucket near the bucket opening. The four winding rollers are arranged around the bucket opening. The winding rollers are arranged in pairs and parallel to each other, and adjacent winding rollers are perpendicular to each other. The four end portions of the anti-sticking plastic film are respectively wound around the four winding rollers.

[0009] By adopting the above technical solution, when the pushing bucket pushes the silt out of the digging bucket, the winding rollers contract synchronously to wind the anti-sticking plastic film, so as to ensure that the anti-sticking plastic film between the winding rollers and the pushing bucket is always in a taut state, preventing the anti-sticking plastic film from wrinkling and affecting the discharge of the silt.

[0010] Preferably, adjacent two winding rollers are connected by a bevel gear pair, and the rotation directions of the two mutually parallel winding rollers are set to be opposite.

[0011] By adopting the above technical solution, the winding rollers rotate synchronously through the bevel gear pair, enabling the anti-sticking plastic films on the four side plates to be spread or contracted synchronously.

[0012] Preferably, a driving roller is rotatably connected to the position of the digging bucket near the bucket opening. The driving roller includes an outer roller and an inner roller. A hollow hydraulic cavity is coaxially opened in the center of the outer roller. A piston for separating the hydraulic cavity into two independent chambers is slidably connected in the hydraulic cavity. Each of the two chambers is provided with an oil port. The inner roller penetrates through the hydraulic cavity and the two ends of the inner roller penetrate out of the two ends of the outer roller. The inner roller penetrates through the piston and is threadedly connected to the piston. The end portion of the inner roller is connected to any one of the winding rollers through gear transmission.

[0013] By adopting the above technical solution, hydraulic oil enters the hydraulic cavity from an oil port, causing the pressure in the right cavity or the left cavity to increase, thereby pressing the piston to slide in the other direction. During the sliding process of the piston, the inner roller is driven to rotate through the thread, and the inner roller drives the winding roller to rotate through the gear, providing power for the rotation of the winding roller. The hydraulic oil is supplied from two different oil ports, which can drive the winding roller to rotate forward or backward, thereby realizing the winding and unwinding of the anti-sticking plastic film.

[0014] Preferably, the hydraulic rod includes an inlet and an outlet. The inlet is connected to an oil supply pipe, the outlet is connected to one of the oil ports, and the other oil port is connected to an oil return pipe. When the hydraulic oil flows into the hydraulic rod from the inlet, the length of the hydraulic rod extends, and the winding roller winds. When the hydraulic oil flows out of the hydraulic rod from the inlet, the length of the hydraulic rod shortens, and the winding roller unwinds.

[0015] By adopting the above technical solution, when the hydraulic rod extends to push the pushing bucket to push out the silt, the hydraulic oil enters the hydraulic rod from the inlet. At the same time, the hydraulic oil in the hydraulic rod is discharged from the outlet and enters the driving roller through the oil port. The driving roller drives the winding roller to rotate, and the winding roller starts to wind, thereby realizing the synchronous movement of the pushing bucket and the winding roller, improving the synchronism of their movements, and ensuring the tightness of the anti-sticking plastic film between the pushing bucket and the winding roller.

[0016] Preferably, protective pressing plates are provided on both sides of the side plate and are located on both sides of the anti-sticking plastic film. A gap is left between the protective pressing plate and the side plate, and both sides of the anti-sticking plastic film are pressed into the gap.

[0017] By adopting the above technical solution, the protective pressing plates protect both sides of the anti-sticking plastic film, preventing silt from accumulating between the anti-sticking plastic film and the digging bucket and affecting the use.

[0018] Preferably, four tensioning rollers are slidably connected to the digging bucket. The four tensioning rollers correspond to the four winding rollers one by one, and the tensioning rollers are located between the winding rollers and the pushing bucket.

[0019] By adopting the above technical solution, the tensioning rollers slide along the digging bucket, thereby adjusting the tension of the anti-sticking plastic film and ensuring the tightness of the anti-sticking plastic film.

[0020] Preferably, a scraper is fixed on the digging bucket at the bucket mouth and is inclined. The anti-sticking plastic film is clamped between the scraper and the digging bucket.

[0021] By adopting the above technical solution, the scraper scrapes the silt on the anti-sticking plastic film, preventing the silt from being wound onto the winding roller and affecting the use.

[0022] Another object of the present application is to provide a river regulation construction process, adopting the following technical solution:.

[0023] A river regulation construction process, using the above-mentioned river regulation construction device, includes the following steps: S1. Dredging and cleaning the riverbed at the dam site: Before constructing the dam, use the river regulation construction device to clean the impurities, and demolish and clean to a depth of not less than 5.0 m inside the river bank to ensure that the construction dam is embedded in the river bank and the anti-seepage effect of the connection section is ensured; The silt at the bottom of the weir site riverbed is removed by the earth extrusion method. S2. Construction of the dam filling: The advancing method is used for construction. After the filling is 0.5 m higher than the river water level, use a bulldozer to level and compact it in layers; The self-unloading truck transports clay or sand-clay mixture from the outside, along the river bank side or the shallow water side, and gradually advances from the upstream to the downstream towards the middle of the river, and dumps the filling material on the weir head exposed above the water surface. The bulldozer starts from the river bank and gradually pushes it towards the middle of the river, and sends it into the water along the slope. For the above-water filling of the construction dam, construction is carried out by laying soil in layers and compacting in layers. The layer thickness is 25 cm. The bulldozer levels and compacts it, and makes sufficient slopes. S3. Leveling and compaction: After the construction dam emerges from the water, use a bulldozer to compact it to the design elevation in layers, and promptly build the backwater slope and increase the compaction of the soil-filled bags.

[0024] In summary, the present application includes the following beneficial technical effects: The anti-sticking plastic film protects the inner wall of the digging bucket. The adhesion between the silt and the anti-sticking plastic film is weak, and the silt is easy to fall off. Moreover, the pushing bucket pushes the silt out of the digging bucket. The silt originally squeezed in the digging bucket extends out of the bucket mouth, and the silt no longer receives the squeezing force of the side plate of the digging bucket on the silt, and the pressure on the silt becomes smaller. As a result, the friction force between the silt and the anti-sticking plastic film also becomes smaller, making it easier for the silt to fall off, thereby improving the construction efficiency. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the digging bucket in the embodiment; Figure 2 It is a schematic connection diagram of the hydraulic rod and the driving roller in the embodiment.

[0026] Description of the Reference Numerals in the Drawings: 1. Digging bucket; 11. Bucket mouth; 12. Bucket bottom; 13. Side plate; 14. Protective pressing plate; 15. Scraper; 2. Pushing bucket; 3. Hydraulic rod; 31. Inlet; 32. Outlet; 4. Winding roller; 5. Driving roller; 51. Outer roller; 52. Inner roller; 53. Hydraulic cavity; 54. Piston; 55. Oil port; 6. Oil supply pipe; 7. Oil return pipe; 8. Tensioning roller. Detailed Description of the Embodiment

[0027] The following further describes the present application in detail with reference to all the drawings. Embodiment

[0028] The embodiment of the present application discloses a river regulation construction device, referring to Figure 1The invention discloses a bucket 1, which is mounted on an excavator and used to remove silt in a river channel. The bucket 1 comprises an arc-shaped bucket bottom 12, and four side plates 13 are arranged around the bucket bottom 12. The upper ends of the side plates 13 form a bucket mouth 11 facing the bucket bottom 12, and the bucket mouth 11 is arranged in a "mouth" shape.

[0029] Reference Figure 1 The bucket bottom 12 is slidably connected to a push bucket 2 of the same shape as the bucket bottom 12 on one side facing the bucket mouth 11, and the push bucket 2 slides toward the bucket mouth 11. A hydraulic rod 3 is installed on the side of the bucket bottom 12 away from the push bucket 2, one end of the hydraulic rod 3 is fixedly connected to the bucket bottom 12, and the other end passes through the bucket bottom 12 and is fixedly connected to the push bucket 2. The hydraulic rod 3 is used to drive the push bucket 2 to slide closer to or away from the bucket mouth 11. When digging silt, the hydraulic rod 3 contracts, and the push bucket 2 fits with the bucket bottom 12 to ensure the digging space of the bucket 1. When discharging silt, the hydraulic rod 3 reciprocates and extends, driving the push bucket 2 to slide back and forth, forming vibration, thereby pushing the silt in the bucket 1 out of the bucket 1 and vibrating it out.

[0030] Reference Figure 1 The bucket 1 is provided with an anti-sticking plastic film (not shown in the figure), which is used to block the silt and the inner wall of the bucket 1 to prevent the silt from adhering to the inner wall of the bucket 1 and affecting the silt from falling off. The anti-sticking plastic film is arranged in a "cross" shape as a whole, and the center of the anti-sticking plastic film is fixed to the side of the push bucket 2 facing the bucket mouth 11. The four branches of the anti-sticking plastic film are respectively attached to the inner walls of the four side panels 13, and the shape is consistent with the inner walls of the side panels 13 to improve the protection effect.

[0031] Reference Figure 1 The two sides of the side plate 13 are provided with protective pressing plates 14 located on the two sides of the anti-adhesive plastic film, and a gap is left between the protective pressing plates 14 and the side plate 13, and the two sides of the anti-adhesive plastic film are pressed in the gap. The protective pressing plates 14 protect the two sides of the anti-adhesive plastic film.

[0032] Reference Figure 1 The bucket 1 is rotatably connected to four winding rollers 4 arranged in a "mouth" shape at the bucket mouth 11. The four winding rollers 4 surround the bucket mouth 11. The winding rollers 4 are arranged in parallel with each other, and the adjacent winding rollers 4 are perpendicular to each other. The ends of the four branches of the anti-sticking plastic film are respectively wound on the four winding rollers 4. The bucket 1 is slidably connected to four tensioning rollers 8. The four tensioning rollers 8 correspond to the four winding rollers 4 one by one. The tensioning rollers 8 are located between the winding rollers 4 and the push bucket 2. The four branches of the anti-sticking plastic film are wound on the winding rollers 4 through the tensioning rollers 8. The tensioning rollers 8 adjust the tensioning force of the anti-sticking plastic film to ensure the tightness of the anti-sticking plastic film.

[0033] Reference Figure 1, a scraper 15 is fixed on the digging bucket 1 at the bucket opening 11 and is inclined. The anti-sticking plastic film is clamped between the scraper 15 and the digging bucket 1. When the unwinding roller winds up the anti-sticking plastic film, the scraper 15 scrapes the silt on the anti-sticking plastic film.

[0034] Refer to Figure 1 and Figure 2 , a driving roller 5 is rotatably connected to the digging bucket 1 near the bucket opening 11. The driving roller 5 includes an outer roller 51 and an inner roller 52. A hollow hydraulic cavity 53 is coaxially opened at the center of the outer roller 51. A piston 54 for separating the hydraulic cavity 53 into two independent chambers is slidably connected in the hydraulic cavity 53. And each of the two chambers is provided with an oil port 55. The inner roller 52 passes through the hydraulic cavity 53 and both ends of the inner roller 52 pass out from both ends of the outer roller 51. The inner roller 52 penetrates through the piston 54 and is threadedly connected to the piston 54. The end of the inner roller 52 is connected to any one of the winding rollers 4 through gear transmission. Hydraulic oil enters the hydraulic cavity 53 from one oil port 55, causing the pressure in the right chamber or the left chamber to increase, thereby pressing the piston 54 to slide in the other direction. During the sliding process of the piston 54, the inner roller 52 is driven to rotate through the thread. The inner roller 52 drives the winding roller 4 to rotate through the gear, providing power for the rotation of the winding roller 4. By supplying hydraulic oil from two different oil ports 55, the winding roller 4 can be driven to rotate forward or backward, so as to realize the winding and unwinding of the anti-sticking plastic film.

[0035] Refer to Figure 1 and Figure 2 , adjacent winding rollers 4 are connected by bevel gear pairs, and the rotation directions of two parallel winding rollers 4 are set to be opposite. When the pushing bucket 2 moves towards the bucket opening 11 to push out the silt, hydraulic oil enters the driving roller 5 from one oil port 55, and the four winding rollers 4 rotate synchronously, while winding up the anti-sticking plastic film, so as to pull the entire anti-sticking plastic film, making the silt in the entire digging bucket 1 move towards the bucket opening 11 and be discharged simultaneously. When the pushing bucket 2 moves towards the bucket bottom 12, hydraulic oil enters the driving roller 5 from the other oil port 55, and the four winding rollers 4 unwind synchronously to ensure the tension of the anti-sticking plastic film.

[0036] Refer to Figure 1 and Figure 2, the hydraulic rod 3 includes an inlet 31 and an outlet 32. The inlet 31 is connected to an oil supply pipe 6, and the outlet 32 is connected to one of the oil ports 55. The other oil port 55 is connected to a return oil pipe 7. When hydraulic oil flows into the hydraulic rod 3 from the inlet 31, the length of the hydraulic rod 3 extends, and winding is performed around the winding roller 4. When the hydraulic oil flows out of the hydraulic rod 3 from the inlet 31, the length of the hydraulic rod 3 shortens, and unwinding is performed by the winding roller 4. The hydraulic oil enters the hydraulic rod 3 from the inlet 31, and the hydraulic rod 3 extends to push the sludge bucket 2 to push out the sludge. At the same time, the hydraulic oil in the hydraulic rod 3 is discharged from the outlet 32 and enters the driving roller 5 through the oil port 55. The driving roller 5 drives the winding roller 4 to rotate, and the winding roller 4 starts to wind, thereby realizing the synchronous movement of the sludge bucket 2 and the winding roller 4, improving the synchronism of their movements, and ensuring the tightness of the anti-sticking plastic film between the sludge bucket 2 and the winding roller 4.

[0037] The implementation principle of a river regulation construction device and the like in an embodiment of the present application is as follows: The hydraulic rod 3 contracts, the sludge bucket 2 retracts to the bottom of the bucket bottom 12, and the winding roller 4 unwinds synchronously. The digging bucket 1 enters the river to dig the sludge. After the digging, the bucket opening 11 faces the cleaning device, the hydraulic rod 3 extends, the sludge bucket 2 moves towards the bucket opening 11 to push out the sludge, and the winding roller 4 winds the anti-sticking plastic film synchronously to pull the entire sludge out of the digging bucket 1 and fall off. Embodiment

[0038] The embodiment of the present application discloses a river regulation construction process, using a river regulation construction device in the above embodiment, including the following steps. S1. Cleaning and removing impurities from the riverbed at the dam site: Before the construction dam is filled, use the river regulation construction device to remove impurities, and demolish and clean to a depth of not less than 5.0 m inside the river bank to ensure that the construction dam is embedded in the river bank and the anti-seepage effect of the connection section is ensured; The sludge at the bottom of the river at the weir site is removed by the earthwork extrusion method. S2. Construction of the construction dam filling: The advancing method is used for construction. After the filling is 0.5 m higher than the river water level, it is leveled and compacted in layers by a bulldozer; The self-unloading truck transports clay or sand-clay mixture from the outside, along the river bank side or the shallow water side, gradually advancing from the upstream to the downstream towards the middle of the river, pouring the filling material on the weir head exposed above the water surface, and the bulldozer starts from the river bank and gradually pushes it towards the middle of the river, sending it into the water along the slope. The filling of the construction dam above the water is constructed by laying soil in layers and compacting in layers. The layer thickness is 25 cm, leveled and compacted by a bulldozer, and sufficient slopes are made. S3. Leveling and compaction: After the construction dam emerges from the water, it will be compacted to the design elevation in layers by a bulldozer, and the backwater slope will be built in time to increase the compaction of the bagged soil.

[0039] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A river channel regulation construction device, comprising a bucket (1), wherein the bucket (1) comprises a bucket bottom (12) directly opposite to a bucket opening (11) and four side plates (13) surrounding the bucket bottom (12), characterized in that: The bucket bottom (12) is slidably connected with a push bucket (2) facing the bucket mouth (11) and having the same shape as the bucket bottom (12); a plurality of hydraulic rods (3) passing through the bucket bottom (12) are installed outside the bucket bottom (12); one end of the hydraulic rod (3) is connected to the digging bucket (1), and the other end is connected to the push bucket (2); an anti-sticking plastic film is fixed on one side of the push bucket (2) facing the bucket mouth (11); the anti-sticking plastic film extends from the four sides of the push bucket (2) and is respectively in contact with four side plates (13).

2. A river regulation construction device according to claim 1, characterized in that: The bucket (1) is rotatably connected to four winding rollers (4) near the bucket mouth (11). The four winding rollers (4) are arranged around the bucket mouth (11). The winding rollers (4) are arranged in parallel with each other, and adjacent winding rollers (4) are perpendicular to each other. The four ends of the anti-sticking plastic film are respectively wound on the four winding rollers (4).

3. A river channel regulation construction device according to claim 2, characterized in that: Two adjacent winding rollers (4) are connected via a bevel gear pair, and the rotation directions of the two winding rollers (4) which are parallel to each other are arranged in opposite directions.

4. A river channel regulation construction device according to claim 3, characterized in that: The bucket (1) is rotatably connected to a driving roller (5) near the bucket mouth (11). The driving roller (5) comprises an outer roller (51) and an inner roller (52). A hollow hydraulic chamber (53) is coaxially opened at the center of the outer roller (51). A piston (54) is slidably connected in the hydraulic chamber (53) for dividing the hydraulic chamber (53) into two independent chambers. The two chambers are respectively provided with an oil port (55). The inner roller (52) is inserted into the hydraulic chamber (53) and the two ends of the inner roller (52) extend out from the two ends of the outer roller (51). The inner roller (52) passes through the piston (54) and is threadedly connected to the piston (54). The end of the inner roller (52) is connected to any winding roller (4) through a gear transmission.

5. A river regulation construction device according to claim 4, characterized in that: The hydraulic rod (3) comprises an inlet (31) and an outlet (32), wherein the inlet (31) is connected to an oil supply pipe (6), the outlet (32) is connected to one of the oil ports (55), and the other oil port (55) is connected to an oil return pipe (7), and when the hydraulic oil flows into the hydraulic rod (3) from the inlet (31), the length of the hydraulic rod (3) is extended, and the winding roller (4) is wound; when the hydraulic oil flows out of the hydraulic rod (3) from the inlet (31), the length of the hydraulic rod (3) is shortened, and the winding roller (4) is unwound.

6. A river regulation construction device according to claim 1, characterized in that: The side plates (13) are provided with protective pressing plates (14) located on both sides of the anti-adhesion plastic film, and a gap is left between the protective pressing plates (14) and the side plates (13), and the two sides of the anti-adhesion plastic film are pressed in the gap.

7. A river regulation construction device according to claim 2, characterized in that: The bucket (1) is slidably connected with four tension rollers (8), the four tension rollers (8) correspond one to one with the four winding rollers (4), and the tension rollers (8) are located between the winding rollers (4) and the pushing bucket (2).

8. A river channel regulation construction device according to claim 6, characterized in that: The bucket (1) is fixed with a scraper (15) located at the bucket mouth (11) and arranged obliquely, and the anti-adhesive plastic film is clamped between the scraper (15) and the bucket (1).

9. A river regulation construction process, characterized in that: Using a river regulation construction device as described in any one of claims 1 to 8 comprises the following steps: S1. Desilting and clearing the riverbed at the dam site: Before filling the construction dam, use river channel regulation construction equipment to clear debris, and remove and clear it to no less than 5.0m inside the river bank to ensure that the construction dam is embedded in the river bank and the anti-seepage effect of the connecting section is guaranteed; the silt at the riverbed of the weir site is removed by earthwork squeezing method; S2. Construction of dam filling: The construction adopts the advance method. After the filling is 0.5m higher than the river water level, it is leveled and compacted by bulldozers in layers. Dump trucks pull clay or sand-clay from outside, and gradually advance from upstream to downstream toward the middle of the river along the river bank or shallow water side. The filling material is poured on the weir head exposed above the water surface. The bulldozer gradually pushes from the riverside to the middle of the river and sends it into the water along the slope. The filling of the dam above the water is carried out by layered soil laying and layered compaction. The layer thickness is 25cm. The bulldozer levels and compacts it, and makes sufficient slopes. S3. Leveling and compaction: After the water comes out of the construction dam, the bulldozer will be used to compact the soil in layers to the designed elevation, and the backwater slope will be built in time to increase the compaction of bagged soil.

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