CN116289768A

CN116289768A - Construction process for river channel and embankment combined remediation engineering

Info

Publication number: CN116289768A
Application number: CN202310397602.4A
Authority: CN
Inventors: 方慧敏; 马敏; 王甜甜
Original assignee: Anhui Beirun Construction Engineering Co ltd
Current assignee: Anhui Beirun Construction Engineering Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-06-23

Abstract

The application relates to a construction process of river course and embankment joint renovation engineering, which is applied to the technical field of river course embankment renovation, and comprises the following steps: building a dike, cleaning a riverbed, refluxing river water, building a slope protection, and building a water-stop dam. The application has the following effects: the method comprises the steps of building a slope protection and a dike protection on two sides of a river channel to keep water and soil, sucking sludge in the river channel by using a dredging device under the condition of not cutting off the river, filtering river water in the sludge to obtain sludge blocks, backfilling the sludge blocks onto the slope protection and the dike protection, and curing plants planted on the slope protection and the dike protection, so that dredging operation is carried out on the river channel, and the sludge is reused to finish joint treatment of the river channel and the dike.

Description

Construction process for river channel and embankment combined remediation engineering

Technical Field

The application relates to the technical field of river channel bank remediation, in particular to a construction process of river channel and bank combined remediation engineering.

Background

With the development of urban design in China, the urban population quantity is rapidly increased, the domestic sewage discharge amount of urban residents is rapidly increased, the domestic sewage is directly discharged into a river channel, so that a river channel water source is polluted and becomes black and odorous, the normal life of residents on two sides of the river channel is influenced, and a corresponding construction scheme is required to be made to carry out improvement on the river channel pollution and purify the polluted river channel.

In the related art, a construction scheme for remedying river pollution is provided, for example, chinese patent with publication number of CN111501652A discloses a comprehensive treatment method for a sand bed river in plain area, which adopts the following technical scheme: s1, horizontal infiltration interception: building a temporary cofferdam in a delimited area, paving geomembranes on the upstream and downstream of the cofferdam and pressing soil bags for seepage prevention, then digging a slurry pond to collect slurry and send out the slurry which is qualified in preparation, and dismantling the cofferdam to the original river bed elevation after soil in the slurry automatically precipitates; s2, vertical infiltration interception; s3, protecting the bank slope.

However, when the river course is treated by adopting the treatment method, a temporary cofferdam needs to be built to cut off the river, and the cofferdam can be removed after soil in mud is self-precipitated, so that the passing is recovered, and the passing of ships in the river course is influenced.

Disclosure of Invention

In order to solve the problem that the river channel is treated by the treatment method in the related technology, a temporary cofferdam needs to be built to cut off the river, the temporary cofferdam can be removed to recover traffic after soil in mud is self-precipitated, and the ship is influenced, the application provides a construction process of the river channel and embankment combined treatment project.

The construction process of the river channel and embankment joint remediation engineering provided by the application adopts the following technical scheme:

a construction process for river channel and embankment combined remediation engineering comprises the following steps:

step S1: building a dike, building a dike on two sides of a river channel respectively, and building a green belt on the dike;

step S2: cleaning the river bed, namely cleaning the river bed by using a dredging device, and extracting sludge accumulated on the river bed to reduce the height of the river bed so as to ensure that river water is unobstructed;

step S3: the river water flows back, the pumped sludge slurry is conveyed to a filtering device, the filtering device filters the river water contained in the sludge slurry, the river water is discharged into a river channel again, sludge blocks are obtained, and the sludge blocks are purified;

step S4: building a stone cage revetment on two sides of a river course respectively, connecting the river course and a dike, filling irregular stone blocks in stone cage nets of the stone cage revetment, backfilling silt blocks into gaps among the stone blocks of the stone cage revetment above the water level, and planting plants on the silt blocks;

step S5: the method comprises the steps of building the water-stop dams, arranging a plurality of water-stop dams at intervals along the extending direction of a river channel, and arranging energy dissipation tanks on one side of each water-stop dam facing away from the incoming flow direction in the river channel.

By adopting the technical scheme, the gabion revetments and the dikes are sequentially built on two sides of the river channel, and plants are planted on the gabion revetments and the dikes so as to increase the greening area of the two sides of the river channel and the environment of the two sides of the river channel.

In addition, in the construction process, river is not required to be cut off for a long time, the silt on the river bed can be quickly sucked out through the silt removing device, the silt removing process is completed, the construction period is short, and the construction process has the advantage that the influence on the flow and the flow of ships in the river is avoided.

And then, river water in the sludge is filtered out by utilizing a filtering device to obtain sludge blocks, the sludge blocks are backfilled on the gabion revetments, nutrition is added for the planted green plants, the secondary utilization of the sludge is completed, and the aim of jointly repairing the river channel and the embankment is fulfilled.

Optionally, the dredging device comprises a dredging ship, a sludge pond is arranged on the dredging ship, a dredging mechanism is arranged on the dredging ship, the dredging mechanism comprises a crushing assembly and a suction assembly, the crushing assembly is immersed in river water and continuously stirs a river bed, and the suction assembly sucks stirred sludge and conveys the stirred sludge to the sludge pond.

By adopting the technical scheme, the crushing assembly is immersed into river water and continuously turns over the river bed, so that silt on the river bed and the river water are mixed together to form silt slurry, and the pumping assembly pumps the silt slurry and conveys the silt slurry into a silt pool, so that the cleaning work of the river bed is completed.

Optionally, the crushing subassembly includes the mounting bracket, be equipped with driving motor on the mounting bracket, coaxial arrangement has the pivot on driving motor's the output shaft, be equipped with a plurality of cutting edges in the pivot, a plurality of the cutting edge is followed the extending direction interval of pivot is laid.

Through adopting above-mentioned technical scheme, driving motor drives the pivot rotation, and epaxial cutting edge cuts the riverbed along with the rotation of pivot for the silt of riverbed bottom is stirred away, forms silt mud.

Optionally, the suction assembly is including locating suction hood on the mounting bracket, the intercommunication has the suction pump on the suction hood, the intercommunication has auger conveyer on the discharge end of suction pump, auger conveyer keeps away from the one end intercommunication of suction pump the silt basin.

By adopting the technical scheme, the suction pump applies suction to the inside of the suction hood, the stirred sludge is sucked into the suction hood, and then the sludge is conveyed into a sludge pond through the auger conveyor to collect the sludge.

Optionally, the filtering device comprises a filtering component and a driving component, wherein the filtering component and the driving component are arranged on the dredging ship, a conveying mechanism is arranged on the dredging ship, the conveying mechanism conveys the sludge in the sludge pond to the filtering component, and the driving component drives the filtering component to operate so as to filter river water in the sludge.

By adopting the technical scheme, the conveying mechanism conveys the sludge into the filter assembly, the driving assembly drives the filter assembly to operate, and the filter assembly filters river water in the sludge and returns the river water to the river channel.

Optionally, the conveying mechanism comprises an agitating assembly and a conveying assembly, the agitating assembly comprises an aerator arranged on the dredging ship, an aeration disc is arranged in the sludge pond, and the aeration disc is connected with the aerator through an aeration pipe;

the conveying assembly comprises a conveying pipe, a slurry pump is arranged on the conveying pipe, a filter screen is arranged at one end, close to the silt pond, of the conveying pipe, and the filter screen is used for adaptively plugging the conveying pipe.

By adopting the technical scheme, the aerator drives the aeration disc to continuously aerate in the silt tank and agitate the silt slurry in the silt tank, so that the silt in the silt tank is not easy to subside and harden. The sludge in the fluid state is pumped out of the sludge tank by a conveying pipe under the suction effect of a sludge pump, and a filter screen is arranged on the conveying pipe to intercept large-particle impurities possibly existing in the sludge so as to reduce the influence of the large-particle impurities on the sludge pump.

Optionally, the filter component is including locating the collection liquid pond on the desilting ship, be equipped with a pair of guide rail on the collection liquid pond, a pair of the guide rail is followed the length direction in collection liquid pond sets up, a pair of be equipped with a plurality of installing frames between the guide rail, integrated into one piece has a pair of sliding block on the installing frame, a pair of sliding block with a pair of the guide rail one-to-one sets up, sliding block slidable mounting is in the guide rail, adjacent two be equipped with the filtrate bag between the installing frame, adjacent two the filtrate bag communicates each other, the conveyer pipe intercommunication the filtrate bag.

Through adopting above-mentioned technical scheme, in mud was carried to the filtrate bag through the conveyer pipe, continuous filtrate bag intercommunication each other, and mud flows into each filtrate bag in proper order, and installing frame slidable mounting promotes the installing frame on the guide rail for adjacent installing frame is close to each other, extrudes the filtrate bag, and river in the filtering mud.

Optionally, the drive assembly includes the baffle, the baffle is located a pair of between the guide rail and fix on the guide rail, dredging ship is in the guide rail is dorsad one end of guide rail is equipped with the drive cylinder, be equipped with the push pedal on the piston rod of drive cylinder, the push pedal with the filtrate bag is fixed.

Through adopting above-mentioned technical scheme, drive the cylinder and drive the push pedal and remove towards the baffle along the extending direction of guided way, continuously support and push away the installing frame and extrude the filtrate bag for river water in the filtrate bag is extruded out, obtains silt piece, later stage backfills silt piece in the clearance of gabion bank protection for vegetation.

Optionally, a plurality of magnetite are fixed with on the filtrate bag, a plurality of magnetite follow the circumference setting of filtrate bag sack.

Through adopting above-mentioned technical scheme, the in-process that the push pedal extrudeed the filtrate bag, the magnetite on the filtrate bag sack is close to each other, and the suction for the sack of filtrate bag is sealed, has reduced the silt slurry in the extrusion process and has overflowed from filtrate bag sack, leads to the possibility that contains a large amount of silt in the river of extrusion.

Optionally, a transition section is formed between the tank wall and the tank bottom of the energy dissipation tank, a plurality of energy dissipation tables are arranged in the energy dissipation tank, the energy dissipation tables are fixed on the bottom wall of the energy dissipation tank, a plurality of energy dissipation tables are arranged in the energy dissipation tank in a staggered manner, and a diversion trench is arranged on the energy dissipation tables.

By adopting the technical scheme, when the water-stop dam is opened to discharge floodwater, river water floods into the energy dissipation pool, a water jump phenomenon is generated under the guidance of the transition section, and the impact of the river water on the pool wall of the energy dissipation pool is reduced. In addition, a plurality of energy dissipation tables are arranged in the energy dissipation pool, and when river water is in an inrush, opposite impacts are formed between the energy dissipation tables, and the turbulence grooves on the energy dissipation tables disturb the river water flow direction, so that impact force generated by part of river water surging is buffered, and the effect of reducing the river water flow speed is achieved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. gabion revetments and dikes are sequentially built on two sides of a river channel, and plants are planted on the gabion revetments and the dikes so as to increase greening areas of two sides of the river channel, and the environment of the two sides of the river channel is planted. In the construction process, river is not required to be cut off for a long time, the silt slurry on the river bed can be sucked out rapidly through the silt removing device, the silt removing process is completed, the construction period is short, and the construction process has the advantage that the influence on the flow and the flow of ships in the river is avoided. Then, river water in the sludge is filtered out by utilizing a filtering device to obtain sludge blocks, the sludge blocks are backfilled on the gabion revetments, nutrition is added for the planted green plants, secondary utilization of the sludge is completed, and the aim of jointly repairing the river channel and the embankment is fulfilled;

2. the aerator drives the aeration disc to continuously aerate in the sludge tank and agitate the sludge in the sludge tank, so that the sludge in the sludge tank is not easy to subside and harden. Pumping the sludge in a fluid state out of the sludge pond by a conveying pipe under the suction effect of a mud pump;

3. in the process of extruding the filtrate bag by the pushing plate, the magnets on the bag mouth of the filtrate bag are close to each other and are attracted to each other, so that the bag mouth of the filtrate bag is closed, and the possibility that sludge overflows from the bag mouth of the filtrate bag in the extruding process, so that a large amount of sludge is contained in extruded river water is reduced.

Drawings

FIG. 1 is a schematic view showing the operation states of the dredging device and the filtering device in the embodiment of the present application.

FIG. 2 is a schematic diagram of a river in a dry state according to an embodiment of the present application

FIG. 3 is a schematic view of a dredging device and a filtering device in an embodiment of the present application.

FIG. 4 is a schematic diagram of a dredging mechanism in an embodiment of the present application.

FIG. 5 is a cross-sectional view of a sump, filter assembly, and drive assembly in an embodiment of the application.

Reference numerals: 1. river course; 2. a dike protection; 3. a green belt; 4. a dredging device; 41. dredging ship; 411. a silt pool; 412. a liquid collecting tank; 42. a dredging mechanism; 421. a crushing assembly; 4211. a mounting frame; 4212. a rotating shaft; 4213. a cutting edge; 4214. a driving motor; 422. a suction assembly; 4221. a suction hood; 4222. a suction pump; 4223. an auger conveyor; 5. a filtering device; 51. a conveying mechanism; 511. an agitation assembly; 5111. an aeration disc; 5112. an aerator; 5113. an aeration pipe; 512. a transport assembly; 5121. a delivery tube; 5122. a slurry pump; 52. a filter assembly; 521. a guide rail; 522. a mounting frame; 523. a sliding block; 524. a filtrate bag; 53. a drive assembly; 531. a baffle; 532. a driving cylinder; 533. a pushing plate; 7. gabion slope protection; 8. a water-stop dam; 9. an energy dissipation pool; 91. a transition section; 11. a magnet; 12. an energy dissipation table; 121. and a flow disturbing groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a construction process for river channel and embankment combined remediation engineering.

Referring to fig. 1 and 2, a construction process of river course and embankment combined remediation engineering comprises the following steps:

step S1, building a dike protection 2: a dike 2 of a bricked structure is built on both sides of the river course 1, and a green belt 3 is built on the dike 2 along the extending direction of the dike 2 to make up the environment on both sides of the river course 1.

Step S2, cleaning a riverbed: the dredging device 4 is used for stirring the river bed, sludge on the river bed is mixed with river water to form sludge, the dredging device 4 sucks the sludge, the height of the river bed is reduced, and the river water is unobstructed.

Step S3, river water reflux: the sludge sucked out by the dredging device 4 is conveyed to the filtering device 5, the filtering device 5 collects and extrudes the sludge, and river water in the sludge is filtered out to obtain sludge blocks. And purifying the obtained sludge blocks by using a conventional purifying means to remove impurities such as parasites, heavy metals and the like possibly contained in the sludge blocks.

S4, building a slope protection: and (3) constructing a gabion revetment 7 between the dike 2 and the river channel 1, filling irregular stones in the gabion mesh of the gabion revetment 7, backfilling the purified silt blocks in the step (3) into the gaps of the stones, and reinforcing the gabion revetment 7. In addition, plants are planted on the mud blocks above the water level of the water faucet revetment, so that the gabion revetment 7 is planted with green plants, and the greening area is increased.

Step S5, building a water barrier 8: a plurality of water-separating dams 8 are built in the river channel 1, the water-separating dams 8 are common hydraulic lifting dams, and the air cylinders are used as driving sources, so that the water-separating dam has higher economic benefit. During flood season, the water flow in the river channel 1 is turbulent, when the practical dredging device 4 cleans the silt on the river bed, the stirred silt slurry easily flows to the downstream of the river channel 1 along with the flow of the river water, and the silt is deposited at the downstream of the river channel 1, so that when the section of river channel 1 is subjected to dredging treatment, the water-stop dam 8 of the section of river channel 1 is lifted, and the river water in the section of river channel 1 is in a state with lower flow velocity.

In addition, in order to reduce the possibility of strong scouring of the river water intercepted by the upstream of the river channel 1 to the river channel 1 after dredging, an energy dissipation pool 9 is arranged in the river channel 1 at the downstream of each water stop dam 8 so as to reduce the influence of impact force generated by flood discharge on the river channel 1.

Referring to fig. 1 and 3, the dredging apparatus 4 used in step S3 includes a dredging vessel 41, a sludge tank 411 is provided in a cabin of the dredging vessel 41, and a dredging mechanism 42 is provided on the dredging vessel 41 for stirring and sucking sludge on a river bed and transferring the sludge into the sludge tank 411 for subsequent treatment.

Referring to fig. 3 and 4, specifically, the dredging mechanism 42 includes a crushing assembly 421 and a suction assembly 422 that communicates the crushing assembly 421 to the sludge tank 411, the crushing assembly 421 includes a mounting frame 4211, a driving motor 4214 is mounted on the mounting frame 4211, a rotation shaft 4212 is coaxially welded on an output shaft of the driving motor 4214, and an end of the rotation shaft 4212 remote from the driving motor 4214 is rotatably mounted on the mounting frame 4211.

A plurality of cutting edges 4213 are welded on the rotating shaft 4212 at intervals, and the cutting edges 4213 are spirally distributed along the length direction of the rotating shaft 4212. When dredging, the cutting edge 4213 is embedded into the river bed, the driving motor 4214 drives the rotating shaft 4212 to rotate, and the cutting edge 4213 is driven to rapidly rotate and stir the sludge in the river bed, so that the sludge and the river water are mixed together to form sludge.

Referring to fig. 3 and 4, in addition, the suction assembly 422 includes a suction hood 4221 covered on a mounting frame 4211, a suction pump 4222 is installed on a surface of the suction hood 4221 facing away from the mounting frame 4211, a liquid inlet end of the suction pump 4222 is communicated with the suction hood 4221, a packing auger conveyor 4223 is installed on the dredging vessel 41, a discharge end of the packing auger conveyor 4223 is communicated with the sludge tank 411, and a liquid inlet end of the packing auger conveyor 4223 is communicated with a liquid outlet end of the suction pump 4222 to convey sucked sludge into the sludge tank 411.

Auger conveyor 4223 in this embodiment is installed on dredging boat 41 through the fixed plate, and the fixed plate rotates to be installed on dredging boat 41, makes things convenient for the operator to carry out the angle modulation to auger conveyor 4223.

Referring to fig. 3 and 5, a liquid collecting tank 412 is provided on the dredging vessel 41 at a side of the sludge tank 411 away from the screw conveyor 4223, the filtering device 5 is installed in the liquid collecting tank 412, and the filtering device 5 is communicated with the sludge tank 411 through a conveying mechanism 51. The transport mechanism 51 includes an agitation assembly 511 provided in the liquid collection tank 412 and a transport assembly 512 for sucking up the sludge and transporting it into the filtering device 5.

Specifically, the agitation assembly 511 includes an aerator 5112 installed on the dredging vessel 41, and a plurality of aeration trays 5111 are provided in the sludge tank 411, and the aerator 5112 is communicated with the aeration trays 5111 through an aeration pipe 5113. The aerator 5112 inputs compressed air into the aeration tray 5111 through the aeration tube 5113, and the compressed air is introduced into the sludge through the aeration tray 5111 so that the sludge in the sludge tank 411 is in a flowing state, reducing the situation that the sludge is settled in the sludge tank 411 so that the capacity of the sludge tank 411 is reduced.

The aerator 5112 in the embodiment of the application is a common aeration pump, the aeration disc 5111 is a membrane disc type microporous aerator, the membrane disc type microporous aerator has better anti-blocking and anti-backflow properties, and the membrane of the aeration disc 5111 is made of high-quality rubber, so that the membrane disc has stronger corrosion resistance.

Referring to fig. 3, in order to reduce the content of impurities such as heavy metals that may be present in the sludge, in the present application, natural zeolite is added into the sludge tank 411 to remove heavy metals contained in the sludge, thereby purifying the sludge and reducing the possibility of harm of the sludge to the human body.

Referring to fig. 3, the transfer assembly 512 includes a transfer pipe 5121, a slurry pump 5122 is installed on the transfer pipe 5121, one end of the transfer pipe 5121 is extended into the sludge in the sludge tank 411, and the other end is communicated with the filtering device 5. One end of the conveying pipe 5121 penetrating into the sludge is welded with a filter screen, the filter screen is matched with the conveying pipe 5121, so that large particles such as natural zeolite in the sludge tank 411 are not easy to suck into the sludge pump 5122, and the condition that the sludge pump 5122 is blocked so that the service life is shortened is reduced.

Referring to fig. 3 and 5, the filtering apparatus 5 includes a filtering assembly 52 and a driving assembly 53 driving the filtering assembly 52 to operate, and both the filtering assembly 52 and the driving assembly 53 are installed on the dredging vessel 41.

Specifically, the filter assembly 52 includes a pair of guide rails 521, and the pair of guide rails 521 are disposed along the length of the sump 412 and welded to the deck of the dredging vessel 41. Be fit for a plurality of installing frames 522 between a pair of guide rail 521, a plurality of installing frames 522 are along the length direction interval distribution of guide rail 521, all are equipped with a filtrate bag 524 between any adjacent two installing frames 522, and filtrate bag 524 in this application adopts the non-woven fabrics to make, bonds between filtrate bag 524 and the installing frame 522.

Referring to fig. 5, a pair of sliding blocks 523 is integrally formed on the mounting frame 522, the pair of sliding blocks 523 are disposed in one-to-one correspondence with the pair of guide rails 521, and the sliding blocks 523 are slidably mounted in the guide rails 521, so that the mounting frame 522 can slide along the extending direction of the guide rails 521.

Referring to fig. 3 and 5, the driving assembly 53 includes a driving cylinder 532 mounted on the deck of the dredging vessel 41, a piston rod of the driving cylinder 532 is disposed along an extending direction of the guide rail 521, a pushing plate 533 is welded to the piston rod of the driving cylinder 532, the pushing plate 533 is bonded to the filtrate bag 524 at one end of the guide rail 521, a baffle 531 is welded to an end of the guide rail 521 opposite to the driving cylinder 532, and the baffle 531 is bonded to the filtrate bag 524 at the other end of the guide rail 521.

Referring to fig. 1 and 5, when river water in the sludge is filtered, the driving cylinder 532 is started, the driving cylinder 532 pushes the pushing plate 533 toward the baffle 531, the sludge poured in the filtrate bag 524 is squeezed to filter the river water, the river water flows into the liquid collecting tank 412 and is discharged back into the river channel 1 through the return pipe, so that sludge soil blocks are obtained, the sludge soil blocks are backfilled on the dike 2 and the gabion slope 7, nutrition is added for green plants on the dike 2 and the gabion slope 7, and the reutilization of the sludge is completed.

Referring to fig. 5, further, in order to reduce the likelihood of sludge escaping from the mouth of the filtrate bag 524 during the compression process, such that the sludge is insufficiently filtered. In this application, a plurality of magnetite 11 have been made in the sack department of filtrate bag 524, and when filtrate bag 524 received the extrusion, magnetite 11 mutually sucked, play shutoff effect to filtrate bag 524. After filtration is completed, the filtrate bag 524 can be pulled open for the next filtration operation by only driving the driving cylinder 532 to retract the piston rod.

Referring to fig. 2, in step S5, a transition section 91 is disposed between a wall and a bottom of the energy dissipation tank 9 in the embodiment of the present application, the transition section 91 is smoothly connected with the bottom and the wall of the energy dissipation tank 9, and river water poured out after the dam 8 is opened generates a water jump phenomenon in the energy dissipation tank 9 under the guiding action of the wall of the energy dissipation tank 9 and the transition section 91, so as to reduce the impact of the river water on the energy dissipation tank 9.

Referring to fig. 2, further, a plurality of energy dissipation tables 12 are further arranged in the energy dissipation tank 9, the energy dissipation tables 12 are arranged in the energy dissipation tank 9 in a staggered manner, if the interference launder 121 is arranged on the energy dissipation tables 12, when river water floods into the energy dissipation tank 9, the river water can form opposite flushing with the energy dissipation tables 12, and the impact of the river water on the tank wall and the tank bottom of the energy dissipation tank 9 is effectively reduced.

In addition, if the interference flow grooves 121 are arranged on the energy dissipation tables 12 at intervals, because the energy dissipation tables 12 are arranged in a staggered mode, river water can zigzag forward under the guidance of the interference flow grooves 121 when passing through the interference flow grooves 121, so that the flow speed of the river water is further reduced, and an energy dissipation effect is achieved.

The implementation principle of the construction process of the river channel and embankment joint remediation engineering in the embodiment of the application is as follows: gabion revetments 7 and dikes 2 are sequentially built on two sides of the river channel 1, and plants are planted on the gabion revetments 7 and the dikes 2 to increase greening areas of two sides of the river channel 1, and the environment of the two sides of the river channel 1 is planted.

In the construction process, river is not required to be cut off for a long time, the silt on the river bed can be quickly sucked out through the silt removing device 4, the silt removing process is completed, the construction period is short, and the influence on the flow of ships in the river channel 1 is avoided in the construction process. And then, river water in the sludge is filtered out by utilizing the filtering device 5 to obtain sludge blocks, the sludge blocks are backfilled on the gabion revetment 7, nutrition is added for the planted green plants, the secondary utilization of the sludge is completed, and the aim of jointly repairing the river channel 1 and the embankment is fulfilled.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A construction process for river channel and embankment combined remediation engineering comprises the following steps: the method comprises the following steps:

step S1: building a dike (2), building a dike (2) on two sides of a river channel (1), and building a green belt (3) on the dike (2);

step S2: cleaning the river bed, namely cleaning the river bed by using a dredging device (4), and extracting sludge accumulated on the river bed to reduce the height of the river bed so as to ensure that river water is unobstructed;

step S3: the river water flows back, the pumped sludge slurry is conveyed to a filtering device (5), the river water contained in the sludge slurry is filtered by the filtering device (5), the river water is discharged to a river channel (1) again, sludge blocks are obtained, and the sludge blocks are purified;

step S4: building revetments, namely building a gabion revetment (7) on two sides of a river channel (1), wherein the gabion revetment (7) is connected with the river channel (1) and a dike (2), irregular stone blocks are filled in gabion nets of the gabion revetment (7), silt blocks are backfilled into gaps of the stone blocks of the gabion revetment (7) above the water level, and plants are planted on the silt blocks;

step S5: the method comprises the steps of building the water-stop dams (8), arranging a plurality of water-stop dams (8) at intervals along the extending direction of the river channel (1), and arranging energy dissipation tanks (9) in the river channel (1) at one side of each water-stop dam (8) facing away from the flowing direction.

2. The construction process of river and embankment joint remediation engineering according to claim 1, wherein the construction process comprises the following steps: the dredging device (4) comprises a dredging ship (41), a silt pond (411) is arranged on the dredging ship (41), a dredging mechanism (42) is arranged on the dredging ship (41), the dredging mechanism (42) comprises a crushing assembly (421) and a pumping assembly (422), the crushing assembly (421) stretches into river water and continuously stirs a river bed, and the pumping assembly (422) pumps stirred silt and conveys the stirred silt to the silt pond (411).

3. The construction process of river and embankment joint remediation engineering according to claim 2, wherein the construction process comprises the following steps: the crushing assembly (421) comprises a mounting frame (4211), a driving motor (4214) is arranged on the mounting frame (4211), a rotating shaft (4212) is coaxially arranged on an output shaft of the driving motor (4214), a plurality of cutting edges (4213) are arranged on the rotating shaft (4212), and the cutting edges (4213) are distributed at intervals along the extending direction of the rotating shaft (4212).

4. A construction process for river course and embankment joint remediation engineering according to claim 3, which is characterized in that: the suction assembly (422) comprises a suction hood (4221) arranged on the mounting frame (4211), a suction pump (4222) is communicated with the suction hood (4221), an auger conveyor (4223) is communicated with the discharge end of the suction pump (4222), and one end, far away from the suction pump (4222), of the auger conveyor (4223) is communicated with the sludge pond (411).

5. The construction process of river and embankment joint remediation engineering according to claim 2, wherein the construction process comprises the following steps: the filtering device (5) comprises a filtering component (52) and a driving component (53) which are arranged on the dredging ship (41), a conveying mechanism (51) is arranged on the dredging ship (41), the conveying mechanism (51) conveys sludge in the sludge pond (411) to the filtering component (52), and the driving component (53) drives the filtering component (52) to operate so as to filter river water in the sludge.

6. The construction process of river and embankment joint remediation engineering according to claim 5, wherein the construction process comprises the following steps: the conveying mechanism (51) comprises an agitating assembly (511) and a conveying assembly (512), the agitating assembly (511) comprises an aerator (5112) arranged on the dredging ship (41), an aeration disc (5111) is arranged in the sludge tank (411), and the aeration disc (5111) is connected with the aerator (5112) through an aeration pipe (5113);

the conveying assembly (512) comprises a conveying pipe (5121), a slurry pump (5122) is arranged on the conveying pipe (5121), a filter screen is arranged at one end, close to the sludge tank (411), of the conveying pipe (5121), and the filter screen is used for adaptively plugging the conveying pipe (5121).

7. The construction process of river and embankment joint remediation engineering according to claim 6, wherein the construction process comprises the following steps: the filter assembly (52) comprises a liquid collecting tank (412) arranged on the dredging ship (41), a pair of guide rails (521) are arranged on the liquid collecting tank (412), the pair of guide rails (521) are arranged along the length direction of the liquid collecting tank (412), a plurality of mounting frames (522) are arranged between the pair of guide rails (521), a pair of sliding blocks (523) are integrally formed on the mounting frames (522), the pair of sliding blocks (523) and the pair of guide rails (521) are arranged in a one-to-one correspondence manner, the sliding blocks (523) are slidably arranged in the guide rails (521), filtrate bags (524) are arranged between every two adjacent mounting frames (522), the two adjacent filtrate bags (524) are mutually communicated, and the conveying pipe (5121) is communicated with the filtrate bags (524).

8. The construction process of river and embankment joint remediation engineering according to claim 7, wherein the construction process comprises the following steps: the driving assembly (53) comprises a baffle plate (531), the baffle plate (531) is located between a pair of guide rails (521) and fixed on the guide rails (521), a driving cylinder (532) is arranged on one end, facing away from the guide rails (521), of the dredging ship (41), of the guide rails (521), a pushing plate (533) is arranged on a piston rod of the driving cylinder (532), and the pushing plate (533) is fixed with the filtrate bag (524).

9. The construction process of river and embankment joint remediation engineering according to claim 7, wherein the construction process comprises the following steps: a plurality of magnets (11) are fixed on the filtrate bag (524), and the magnets (11) are arranged along the circumference of the bag opening of the filtrate bag (524).

10. The construction process of river and embankment joint remediation engineering according to claim 1, wherein the construction process comprises the following steps: a transition section (91) is formed between the tank wall and the tank bottom of the energy dissipation tank (9), a plurality of energy dissipation tables (12) are arranged in the energy dissipation tank (9), the energy dissipation tables (12) are fixed on the bottom wall of the energy dissipation tank (9), a plurality of energy dissipation tables (12) are arranged in the energy dissipation tank (9) in a staggered mode, and a diversion trench (121) is arranged on each energy dissipation table (12).