CN113250142A - Protection structure and protection method for preventing and treating river channel bank erosion - Google Patents
Protection structure and protection method for preventing and treating river channel bank erosion Download PDFInfo
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- CN113250142A CN113250142A CN202110595757.XA CN202110595757A CN113250142A CN 113250142 A CN113250142 A CN 113250142A CN 202110595757 A CN202110595757 A CN 202110595757A CN 113250142 A CN113250142 A CN 113250142A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/121—Devices for applying linings on banks or the water bottom
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Abstract
The utility model relates to a protection architecture and protection method of prevention and cure river course bank of recess erosion, relate to hydraulic engineering's technical field, wherein the protection architecture of prevention and cure river course bank of recess erosion is including fixing bright stake on the bank, fix the river bottom camera mast at the river bottom and install the water conservancy diversion mechanism on bright stake and river bottom camera mast, water conservancy diversion mechanism includes the water conservancy diversion net, the water conservancy diversion net cover is established on the side that the river course is close to the bank of recess, the one end that the water conservancy diversion net is close to the river course upper reaches sets up the place of beginning at the river course bend, the one end that the water conservancy diversion net is close to the river course low reaches sets up the end at the river course bend, form the slow runner between the side that water conservancy diversion net and river course are close to the bank of recess. The protection method for preventing and controlling the river channel concave bank erosion comprises a method for protecting the river channel concave bank by using the protection structure. This application has not only reduced the erosion effect of river to bank of recesses one side, makes the river sand be difficult for piling up in the bottom of water conservancy diversion net moreover, has reduced the probability that the riverbed is raised gradually.
Description
Technical Field
The application relates to the field of hydraulic engineering, in particular to a protection structure and a protection method for preventing and treating river channel bank erosion.
Background
Natural rivers are almost all curved, and the concave bank of the river channel is more easily eroded by scouring when the river water flows to the river bay due to the inertia and centrifugal force of the river water. The problem of ecological environment degradation is easy to occur after the river bank is corroded, and even the river bank collapses to cause major accidents, so the river bank corrosion is also an important threat to coastal land, ecological environment and life and property safety of people, and the effective method for preventing and treating the river bay concave bank corrosion has important significance for water and soil conservation.
At present, the Chinese patent invention with the bulletin date of 2020, 08 and 11 and the bulletin number of CN108824364B provides a protection structure for preventing and treating erosion of a river channel recessed bank, which comprises an overflow weir, a protection arm and a dam abutment, wherein the overflow weir is laid in the middle of the river channel, the dam abutment is arranged on the recessed bank, one end of the protection arm is connected with the overflow weir, and the other end of the protection arm is connected with the dam abutment. An included angle is formed between the protection arm and the bank side of the concave bank, and the opening of the included angle faces to the upstream of the river channel.
When river water flows, under the guiding action of the overflow weir part and the protection arm, more river water is concentrated at the overflow weir and flows through the river bay at one side close to the unprotected convex bank, the flowing speed of the river water at the position close to the concave bank is reduced, the shearing stress borne by the concave bank is reduced, and the erosion speed of silt at the concave bank by the river water is further reduced.
In view of the above-mentioned related art, the inventor believes that the river water located at the deepest position is blocked by the weir when flowing through the weir, so that the flow speed of the river water located at the deepest position is slowed down, and river sand carried by the river water is easy to gradually accumulate upstream of the weir, thereby gradually raising the river bed.
Disclosure of Invention
In order to reduce the probability that the riverbed is lifted while protecting the riverway concave bank, the application provides a protection structure and a protection method for preventing and treating the erosion of the riverway concave bank.
First aspect, the application provides a protection architecture of prevention and cure river course revetment erosion, adopts following technical scheme:
the utility model provides a protection architecture of prevention and cure river course bank of recess erosion, is including fixing bright stake on the bank, fixing at the bottom of a river collet and installing in the bright stake and the water conservancy diversion mechanism on the bottom of a river collet, water conservancy diversion mechanism includes the water conservancy diversion net cover, the water conservancy diversion net cover is established on the side that the river course is close to the bank of recess, the one end setting that the water conservancy diversion net is close to the river course upper reaches is at the starting department of river course bend, the one end setting that the water conservancy diversion net is close to the river course low reaches is at the ending department of river course bend, form the slow runner between the side that water conservancy diversion net and river course are close to the bank of recess.
By adopting the technical scheme, when river water flows through the bend, under the blocking action of the flow guide net, most of the river water flows through the bend from one side of the flow guide net close to the convex bank, and a small part of the river water can flow through the flow guide net and flows through the bend from one side of the flow guide net close to the concave bank; under the resistance effect of the diversion net, the flowing speed of the river in the slow flow channel is reduced, the erosion effect of the river on one side of the concave bank is reduced, and the concave bank of the river channel is protected. Because the water conservancy diversion net sets up in the river course and is close to one side of bank of a cave, and river water can pierce through the water conservancy diversion net for river sand is difficult to pile up in the bottom of water conservancy diversion net, has reduced the probability that the riverbed is raised gradually.
Optionally, a plurality of middle piles are arranged between the open piles and the river bottom piles, and the flow guide net is further connected with the middle piles.
By adopting the technical scheme, because the flow guide net is connected with the middle part blind pile, the width of the slow flow channel is more average, the uniformity of the flowing speed of river water in the slow flow channel is improved, and the erosion effect of the river water on the concave bank of the river channel is reduced. And under the fixed action of the middle part of the blind pile, the flow guide net is not easy to drift along with water flow, and the service life of the flow guide net is prolonged.
Optionally, the diversion mechanism still includes the guide plate, guide plate fixed connection be in on the water conservancy diversion net, the guide plate evenly sets up on the length direction in river course, the guide plate is close to the one end in river course low reaches and inclines towards the middle part in river course.
Through adopting above-mentioned technical scheme, under the guide effect of guide plate, river can impact the guide plate earlier when the bend flows through, so the river course bank of recesses just is difficult for receiving the direct impact of river, has further reduced the erosion effect of river to the river course bank of recesses.
Optionally, the diversion mechanism further comprises a diversion block, the diversion block is fixedly connected to one side surface of the river channel close to the concave bank, and a throttling opening is formed between the diversion block and the diversion net.
Through adopting above-mentioned technical scheme, river need just can flow into the slow runner through the throttle mouth when the flow is in bend department, because the setting up of water conservancy diversion piece makes the cross-section of throttle mouth be less than the cross-section of slow runner, so the flow velocity of river in the slow runner just can slow down, and then further reduced the erosion effect of river to the river course bank.
Optionally, a first guide surface is disposed on an end surface of the diversion block near the upstream of the river.
Through adopting above-mentioned technical scheme, when the river water got into the slow runner through the choke, under the guide effect of first spigot surface, the river water was difficult for taking place the torrent in the slow runner, has reduced the shearing force of river water to the river course bank of recesses, and then has further reduced the erosion effect of river water to the river course bank of recesses.
Optionally, a second guide surface is arranged on an end surface of the diversion block close to the downstream of the river channel.
By adopting the technical scheme, when river water flows through the throttling port and enters the slow flow channel, under the guiding action of the second guiding surface, the river water is not easy to impact the concave bank positioned at the downstream of the flow guide block, and the probability that the flow guide block falls off from the concave bank of the river channel is reduced.
Optionally, the diversion net is installed on the open pile and the river bottom blind pile through a connection mechanism, the connection mechanism includes a first connection ring and a second connection ring, the first connection ring includes a fixed portion, a rotating portion and a compression spring, the rotating portion is hinged to the fixed portion, one end of the compression spring is connected to the fixed portion, and the other end of the compression spring is connected to the rotating portion; the fixed part of the first connecting ring is fixedly connected to the flow guide net, the second connecting ring is fixedly connected to the open pile and the river bottom blind pile, and the first connecting ring is connected with the second connecting ring.
Through adopting above-mentioned technical scheme, the water conservancy diversion net is detachable with bright stake, river bottom camera mast and is connected, and after the water conservancy diversion net was corroded by the river water, the accessible was broken the rotating part with the fingers and thumb and is made first connecting ring and second connecting pipe throw off, and then pulled down the water conservancy diversion net from bright stake and river bottom camera mast, later again to installing new water conservancy diversion net on bright stake and the river bottom camera mast, so alright protect the river course bank in succession.
Optionally, the connection mechanism is further including connecting the rope, the rotating part of two first connecting rings is connected respectively at the both ends of connecting the rope, the rotating part is located the downside of fixed part.
Through adopting above-mentioned technical scheme, because the river bottom camera mast is submerged by the river for it is comparatively difficult to open the first connecting ring of connection on the river bottom camera mast, through the setting of connecting the rope, upwards stimulates behind the first connecting ring of opening on the bright stake and connects the rope, so connect the first connecting ring on the installation of river bottom alright be opened, make first connecting ring and second connecting ring throw off, and then the constructor cell-phone of being convenient for leads the flow net.
Optionally, the connecting mechanism further includes a limiting rod for limiting the movement of the second connecting ring, and the limiting rod is fixedly connected to one end of the rotating portion, which is far away from the hinge shaft of the rotating portion.
Through adopting above-mentioned technical scheme, link together the back when first go-between and second go-between, the second go-between is located the gag lever post all the time and keeps away from one side of rotating part articulated shaft, so after the pulling rotating part, the second go-between is difficult for being deadly in first go-between by the rotating part lock, and the constructor of being convenient for pulls down the water conservancy diversion net.
In a second aspect, the protection method for preventing and treating river channel bank erosion adopts the following technical scheme:
a method of protection against channel bank erosion comprising the step of protecting a channel bank with a protective structure according to the first aspect.
By adopting the technical scheme, the method is used for protecting the concave bank of the river channel, so that the erosion effect of river water on one side of the concave bank is reduced, river sand is not easy to accumulate at the bottom of the diversion net, and the probability that the riverbed is gradually raised is reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the setting of water conservancy diversion net, not only reduced the erosion effect of river to bank of recesses one side, made the river sand difficult in the bottom of water conservancy diversion net pile up moreover, reduced the probability that the riverbed is raised gradually.
2. Through the setting of guide plate, under the guide effect of guide plate, the river can impact the guide plate earlier when the bend flows through, so the river course bank of recesses just is difficult for receiving the direct impact of river, has further reduced the erosion effect of river to the river course bank of recesses.
3. Through the setting of water conservancy diversion piece, the river is when getting into through the choke and slowing the runner in, under the guide effect of first spigot surface, the river is difficult for taking place the torrent in slowing the runner, has reduced the shearing force of river to the river course bank of a recess, and then has further reduced the erosion effect of river to the river course bank of a recess.
4. Through coupling mechanism's setting, after water conservancy diversion net or guide plate reach life's limit, the constructor of being convenient for takes out water conservancy diversion net and guide plate from the river course, later to installing new water conservancy diversion net and guide plate in the river course, and then protects the river course revetment in succession.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a top view of an embodiment of the present application;
FIG. 3 is an enlarged schematic view of portion B of FIG. 2;
fig. 4 is an enlarged schematic view of a portion a in fig. 1.
Description of reference numerals: 110. pile opening; 120. river bottom embedded piles; 130. a middle embedded pile; 200. a flow guide mechanism; 210. a flow guide net; 220. a slow flow passage; 230. a baffle; 240. a flow guide block; 241. a first guide surface; 242. a second guide surface; 250. a choke; 300. a connecting mechanism; 310. a first connecting ring; 311. a fixed part; 312. a rotating part; 313. a compression spring; 314. a strip-shaped hole; 320. a second connection ring; 330. connecting ropes; 340. a limiting rod.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a protection structure and a protection method for preventing and treating river channel bank erosion. First, an embodiment of the present application discloses a protection structure for preventing and treating erosion of a river channel recessed bank, and referring to fig. 1 and 2, the protection structure for preventing and treating erosion of a river channel recessed bank includes an open pile 110 anchored on a river bank, a river bottom blind pile 120 anchored at a river bottom, a plurality of middle blind piles 130 arranged between the open pile 110 and the installation of the river bottom, and a diversion mechanism 200 for diverting river water. The middle part of the blind piles 130 are also anchored on the river channel, and the open piles 110, the middle part of the blind piles and the river bottom blind piles 120 are uniformly distributed along the length direction of the river channel. The diversion mechanism 200 comprises a diversion net 210, and the diversion net 210 is connected to the open piles 110, the middle dark piles 130 and the river bottom dark piles 120 through the connecting mechanism 300. One end of the flow guide net 210 close to the upstream of the river channel is arranged at the beginning of the curve of the river channel, one end of the flow guide net 210 close to the downstream of the river channel is arranged at the ending of the curve of the river channel, and a slow flow channel 220 is formed between the flow guide net 210 and one side surface of the river channel close to the concave bank.
The diversion net 210 can allow part of river water to pass through, when the river water passes through a curve, most of the river water passes through the curve from the side of the diversion net 210 close to the convex bank under the blocking effect of the diversion net 210, and a small part of the river water can pass through the diversion net 210 and enter the slow flow passage 220. Under the resistance action of the diversion net 210, the flowing speed of the river water entering the slow flow channel 220 is reduced, the erosion effect of the river water on one side of the concave bank is reduced, and the concave bank of the river channel is protected. Because the flow guide net 210 is arranged on one side of the river channel close to the concave bank, and river water can penetrate through the flow guide net 210, although the flowing speed of the river water which does not penetrate through the flow guide net 210 is reduced, the river water flowing through the curve from one side of the flow guide net 210 close to the convex bank still has entrainment capacity, so that river sand is not easy to accumulate at the bottom of the flow guide net 210, and the probability that the river bed is gradually lifted is reduced.
Due to the arrangement of the plurality of middle part blind piles 130, the flow guide net 210 is not easy to float under the impact of river water, and further the width of the slow flow channel 220 is more even and is not easy to fluctuate. Because the width of the slow flow channel 220 is not easy to fluctuate, the uniformity of the flowing speed of the river in the slow flow channel 220 is improved, and the erosion effect of the river on the river channel concave bank is reduced. And because the flow guide net 210 is not easy to drift along with the water flow, the service life of the flow guide net 210 is prolonged.
Referring to fig. 1 and 2, in order to make the water flow in the slow flow passage 220 slower, the diversion mechanism 200 further includes diversion plates 230 bound on the diversion net 210, and the diversion plates 230 are uniformly distributed in the length direction of the river channel. One end of the guide plate 230 close to the upstream is bound on the guide net 210, and one end of the guide plate 230 close to the downstream of the river channel inclines towards the middle of the river channel. Under the blocking effect of the guide plate 230, river water is not easy to pass through the guide plate 230 and the guide net 210 to directly impact the concave bank of the river channel, so that the erosion effect of the river water on one side of the concave bank is reduced; since river water is not easy to pass through the guide plate 230 and the guide net 210 to enter the slow flow passage 220, the flow rate in the slow flow passage 220 is reduced, and the water flow speed in the slow flow passage 220 is further reduced, so that the erosion effect of the river water on one side of the concave bank is reduced again.
Referring to fig. 2 and 3, in order to further reduce the flow rate in the slowing channel 220 and further reduce the flow velocity of the water in the slowing channel 220, the diversion mechanism 200 further includes a diversion block 240 anchored on a side of the channel adjacent to the concave bank. The flow guide block 240 is arranged along the circumferential direction of the river, and the flow guide block 240 is disposed at the beginning of the slow flow passage 220, so that the cross section of the upstream end of the slow flow passage 220 becomes smaller, thereby forming a throttle 250. A first guide surface 241 is disposed on an end surface of the diversion block 240 close to the upstream of the river channel, a second guide surface 242 is disposed on an end surface of the diversion block 240 close to the downstream of the river channel, and when flowing through the diversion block 240, river water can flow into the buffer channel 220 only by being guided by the first guide surface 241 and the second guide surface 242.
Due to the arrangement of the flow guide plate 230, the river water is not easy to pass through the flow guide net 210 and enter the slow flow passage 220, and therefore the river water mainly enters the slow flow passage 220 through the throttling openings 250. Because the cross-section of throttle orifice 250 is less than the cross-section of slow runner 220 for the flow that the river water flows into in slow runner 220 reduces, and the river water gets into behind the slow runner 220 because the increase of cross-section, so just reduced the velocity of flow of river water in slow runner 220, and then reduced the erosion effect of river water to the river course bank of a river.
Due to the arrangement of the first guide surface 241, the river water flows into the slow flow channel 220 under the guide effect of the first guide surface 241, so that the river water is not easy to generate turbulence in the slow flow channel 220, the shearing force of the river water on the channel bank is reduced, and the erosion effect of the river water on the channel bank is further reduced. The second guide surface 242 is arranged to enable river water to flow through the diversion block 240 under the guide effect of the second guide surface 242, so that the river water is not easy to impact the concave bank located at the downstream of the diversion block 240, and the probability that the diversion block 240 falls off from the concave bank of the river channel is further reduced.
Referring to fig. 1 and 4, after the diversion net 210 and the diversion plate 230 are placed in the river for a long time, river water gradually erodes the diversion net 210 and the diversion plate 230, so that the effect of the diversion mechanism 200 for protecting the river bank is reduced. In order to continuously protect the river bank by the diversion mechanism 200, the connection mechanism 300 includes a plurality of first connection rings 310, and each first connection ring 310 includes a fixed portion 311, a rotating portion 312, and a compression spring 313.
Referring to fig. 1 and 4, the rotating portion 312 is hinged to the fixing portion 311, the fixing portion 311 is provided with a notch, and when the rotating portion 312 rotates relative to the fixing portion 311, the notch on the fixing portion 311 can be sealed by the rotating portion 312, so that the rotating portion 312 and the fixing portion 311 form a complete ring. The one end that the rotating part 312 kept away from self articulated shaft is the wedge setting, and the one end that the fixed part 311 kept away from self articulated shaft also is the wedge setting, makes rotating part 312 can only rotate towards the inboard of fixed part 311. One end of the compression spring 313 is spot welded on the fixed part 311, the other end is spot welded on the rotating part 312, and under the action of the compression spring 313 in the initial state, the rotating part 312 and the fixed part 311 form a complete ring body.
Referring to fig. 1 and 4, the open pile 110, the river bottom dark pile 120, and the middle dark pile 130 are all welded or anchored with a second connection ring 320, the fixing portion 311 of the first connection ring 310 is bound to the flow guide net 210, and when the flow guide net 210 needs to be covered on a side surface of the river channel close to the concave bank, the corresponding first connection ring 310 and the second connection ring 320 are connected together. When the guide net 210 or the guide plate 230 is worn, the first connection ring 310 can be opened by rotating the rotation part 312, and the first connection ring 310 and the second connection ring 320 can be separated, so that the guide net 210 can be taken out of the river channel and replaced, and thus, the concave bank of the river channel can be continuously protected.
Referring to fig. 1 and 4, since both the river bottom dark pile 120 and the middle dark pile 130 are submerged by the river water, it is inconvenient for the constructor to directly open the first connection ring 310 connected to the river bottom dark pile 120 and the middle dark pile 130. Therefore, in order to facilitate the constructor to open the first connection ring 310 submerged under the water, the connection mechanism 300 further includes a plurality of connection strings 330, wherein one end of a part of the connection strings 330 is connected to a lower side of the rotation part 312 of the first connection ring 310 connected to the open pile 110, the other end is connected to an upper side of the rotation part 312 of the first connection ring 310 connected to the middle dark pile 130, one end of a part of the connection strings 330 is connected to a lower side of the rotation part 312 of the first connection ring 310 connected to the middle dark pile 130, the other end is connected to an upper side of the rotation part 312 of the first connection ring 310 connected to the river bottom dark pile 120, and openings of all the fixing parts 311 face downward.
When the diversion net 210 needs to be taken out of the river channel, the first connecting ring 310 connected with the open piles 110 is opened first, then the diversion net 210 is pulled upwards, at the moment, under the driving action of the connecting ropes 330, the first connecting ring 310 connected to the middle blind pile 130 is opened, then the diversion net 210 is continuously pulled, and at the moment, under the driving action of the connecting ropes 330, the first connecting ring 310 connected to the river bottom blind pile 120 is opened. Therefore, the constructor does not need to go underwater to open the first connecting ring 310, and the efficiency of removing the flow guide net 210 is improved. When it is required to install the current guiding net 210, the first connection ring 310 and the second connection ring 320 can be connected together by simply gripping the fixing portion 311 using the mechanical gripper and then rotating the second connection ring 320 by pushing the rotating portion 312.
Referring to fig. 1 and 4, after the first connection ring 310 is opened, the second connection ring 320 is easily locked in the first connection ring 310 and cannot be removed, and in order to reduce the probability that the second connection ring 320 is locked in the first connection ring 310, the connection mechanism 300 further includes a stopper 340 for limiting the movement of the second connection ring 320. The gag lever post 340 welds the one end of keeping away from self articulated shaft in rotating part 312, and the strip hole 314 that supplies gag lever post 340 to pass is seted up to one side that the rotating part 312 was kept away from to fixed part 311, and the one end that the gag lever post 340 kept away from rotating part 312 is worn to establish in strip hole 314 that compression spring 313 sets up in one side that the articulated shaft of gag lever post 340 is close to rotating part 312.
After the second connection ring 320 is connected to the first connection ring 310, the second connection ring 320 can be located only on one side of the stopper rod 340 away from the hinge shaft of the rotating portion 312, so that when the first connection ring 310 is opened, the second connection ring 320 is not easily locked by the first connection ring 310, and since the opening of the fixing portion 311 is located at the lower side, the second connection ring 320 is more easily separated from the first connection ring 310, thereby facilitating the constructor to remove the diversion net 210 from the river.
Referring to fig. 4, in order to make the structure of the connection mechanism 300 more reasonable, the connection string 330 may be indirectly connected to the upper side of the rotation part 312 by being connected to the stopper rod 340.
Secondly, the embodiment of the application also discloses a protection method for preventing and treating the erosion of the river channel concave bank, which comprises a method for protecting the river channel concave bank by using the protection structure for preventing and treating the erosion of the river channel concave bank.
The implementation principle of the protection structure and the protection method for preventing and treating the erosion of the river channel concave bank in the embodiment of the application is as follows:
since the flow guide net 210 and the flow guide plate 230 restrict the river water from passing through, when the river water passes through a curve, most of the river water passes through the curve from the side of the flow guide net 210 close to the convex bank under the blocking action of the flow guide net 210 and the flow guide plate 230, and a small part of the river water can pass through the flow guide net 210 and enter the slow flow passage 220. The river entering the slow flow passage 220 is throttled under the throttling action of the flow guide block 240, so that the amount of the river flowing into the slow flow passage 220 is reduced, and then the flow speed of the river in the slow flow passage 220 is reduced by increasing the flow cross section, so that the erosion effect of the river on the channel bank can be reduced. And because the diversion net 210 and the diversion plate 230 limit the river, the river flowing from one side of the diversion net 210 close to the convex bank is not easy to directly wash the concave bank of the river channel, and the effect of the river water to erode the concave bank of the river channel is further reduced.
Because the flow guide net 210 and the flow guide plate 230 are both arranged on one side of the river channel close to the concave bank, and river water can penetrate through the flow guide net 210 and the flow guide plate 230, although the flow speed of the river water which does not penetrate through the flow guide net 210 and the flow guide plate 230 is reduced, the river water flowing through the curve from one side of the flow guide net 210 close to the convex bank still has entrainment capacity, so that river sand is not easy to accumulate at the bottom of the flow guide net 210, and the probability that the river bed is gradually lifted is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A protective structure for preventing and controlling the erosion of a river channel concave bank is characterized in that; the river bottom hidden pile type river diversion mechanism comprises a visible pile (110) fixed on a river bank, a river bottom hidden pile (120) fixed on the river bottom and a diversion mechanism (200) installed on the visible pile (110) and the river bottom hidden pile (120), wherein the diversion mechanism (200) comprises a diversion net (210), the diversion net (210) is covered on one side surface of the river channel close to a concave bank, one end, close to the upstream of the river channel, of the diversion net (210) is arranged at the starting position of a curve of the river channel, one end, close to the downstream of the river channel, of the diversion net (210) is arranged at the ending position of the curve of the river channel, and a slow flow channel (220) is formed between the diversion net (210) and one side surface of the river channel close to the concave bank.
2. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 1, wherein: a plurality of middle dark piles (130) are arranged between the bright piles (110) and the river bottom dark piles (120), and the flow guide net (210) is also connected with the middle dark piles (130).
3. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 1, wherein: the diversion mechanism (200) further comprises a diversion plate (230), the diversion plate (230) is fixedly connected to the diversion net (210), the diversion plate (230) is uniformly arranged in the length direction of the river channel, and one end, close to the downstream of the river channel, of the diversion plate (230) inclines towards the middle of the river channel.
4. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 1, wherein: the diversion mechanism (200) further comprises a diversion block (240), the diversion block (240) is fixedly connected to one side face, close to the concave bank, of the river channel, and a throttling opening (250) is formed between the diversion block (240) and the diversion net (210).
5. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 4, wherein: a first guide surface (241) is arranged on one end surface of the flow guide block (240) close to the upstream of the river channel.
6. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 4, wherein: and a second guide surface (242) is arranged on one end surface of the flow guide block (240) close to the downstream of the river channel.
7. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in any one of claims 1 to 6, wherein: the diversion net (210) is installed on the open pile (110) and the river bottom blind pile (120) through a connecting mechanism (300), the connecting mechanism (300) comprises a first connecting ring (310) and a second connecting ring (320), the first connecting ring (310) comprises a fixed part (311), a rotating part (312) and a compression spring (313), the rotating part (312) is hinged on the fixed part (311), one end of the compression spring (313) is connected with the fixed part (311), and the other end of the compression spring (313) is connected with the rotating part (312); the fixing part (311) of the first connection ring (310) is fixedly connected to the current guiding net (210), the second connection ring (320) is fixedly connected to the bright pile (110) and the river bottom dark pile (120), and the first connection ring (310) is connected to the second connection ring (320).
8. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 7, wherein: the connecting mechanism (300) further comprises a connecting rope (330), two ends of the connecting rope (330) are respectively connected with the rotating parts (312) of the two first connecting rings (310), and the rotating parts (312) are located on the lower side of the fixing part (311).
9. The protective structure for preventing and treating the erosion of the river channel concave bank as claimed in claim 8, wherein: the connecting mechanism (300) further comprises a limiting rod (340) for limiting the movement of the second connecting ring (320), and the limiting rod (340) is fixedly connected to one end of the rotating part (312) far away from the self-hinged shaft.
10. A protection method for preventing and controlling river channel concave bank erosion is characterized in that: a method comprising protecting a channel bank with a protective structure according to any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118600922A (en) * | 2024-06-28 | 2024-09-06 | 广东粤源工程咨询有限公司 | A levee risk elimination and reinforcement structure |
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| CN113250142B (en) | 2022-10-28 |
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