156 results about "Levee" patented technology

The invention provides a river levee flood control pile foundation stress analysis method and system, and relates to the technical field of river levee flood control pile foundation stress analysis. Multi-channel sensors are arranged on the pile top, the pile side and the pile end, and the sampling frequency is automatically switched along with the flood stage; inverting the soil saturation based on displacement and pore pressure change, dynamically correcting the permeability coefficient and the effective stress, and outputting a space-time coupling parameter matrix; determining a hazard source for the monitoring point, constructing an elliptical search domain by taking the hazard source as a center, and recursively incorporating abnormal points to form a risk area; a seepage-structure full-coupling finite element model is established in the risk area, the outside of the area is simplified through an equivalent spring boundary, and a pile foundation stress-strain field and a safety coefficient are calculated through self-adaptive time step control; and finally, generating a risk report according to safety factor classification, marking a high-risk area, automatically improving the sampling frequency and triggering early warning.

The invention relates to the field of seawalls, in particular to a marine ecological restoration seawall based on a sand beach and a construction method thereof. The seawall comprises three defensive lines, the first defensive line serves as a wave dissipation platform by laying an artificial sand beach, and an original wave wall and a riprap protection bottom are transformed to construct a first-stage wave wall; curbs are heightened and transformed into secondary wave walls by the middle road defense line, and a levee top road is laid to serve as a wave dissipation platform; a flower bed is transformed on a rear defense line, a low retaining wall is a three-stage wave wall, a drainage system is arranged, and residents are protected by combining buildings behind the road and flood prevention measures. The three-dimensional defense line can achieve wave dissipation and damp blocking, and the wave overtopping amount is reduced. The method aims at the shoreline with the requirement for the dike crest elevation and insufficient moisture-proof capacity in marine ecological restoration, and is particularly suitable for constructing a mature urban dike. The damp-proof flood-proof seawall aims at keeping the original appearance of the seawall as much as possible, reducing damage to existing roads and environments, improving the damp-proof capacity, promoting organic fusion of the seawall and surrounding characteristics and building the damp-proof flood-proof seawall for marine ecological restoration.

The utility model provides a soft foundation levee slope reinforcing structure based on timber piles and geogrids. The soft foundation levee slope reinforcing structure comprises a soil levee body, a reinforcing levee slope, a soft soil levee foundation, the timber piles, a gravel soil backfilling layer, a ballast platform and the geogrids. An embankment top road is arranged at the upper part of the earth embankment body, and the side surface is an original embankment slope; the reinforced levee slope is located outside the original levee slope; the soft soil embankment foundation is located on the lower side of the soil embankment body. The lower ends of the timber piles are vertically inserted into the soft soil embankment foundation, and steel wire meshes are arranged at the tops; the gravel soil backfill layer is laid on the timber piles; the ballast platform is located on the upper side of the original levee slope and connected with the reinforced levee slope. The geogrids are located between the gravel soil backfill layer and the ballast platform and laid layer by layer along with filling of the ballast platform. The timber piles are used as the slide-resistant piles, so that the bearing capacity of the soft soil embankment foundation is improved; the stability and integrity of the levee slope are enhanced by adopting the ballast platform and the geogrid, the instability of the levee slope is prevented, the safety of the levee slope in the construction period and the operation period is guaranteed, and the engineering effect is good.

The invention relates to the technical field of hydrodynamic simulation, in particular to a lateral coupling method of a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model. The method comprises the following steps: collecting topographic data in a large section of a river channel and flood control protection areas on both sides of the river; constructing a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model based on the topographic data; determining a common edge of the one-dimensional hydrodynamic model and the two-dimensional hydrodynamic model; according to the relative position of the water level of each common edge in the one-dimensional cell of the river channel side and the midpoint of the common edge, combining an approximate Riemann solver to obtain the numerical flux of each common edge; obtaining a new time layer variable value of the two-dimensional hydrodynamic model by adopting an approximate Riemann solver; and obtaining a new time layer variable value of the one-dimensional hydrodynamic model according to the condition that the river flood overflows the embankment on the shared edge of the two sides of the one-dimensional cell and the numerical flux and the water level of the two sides of the one-dimensional cell, and outputting a calculation result. The stability of the model calculation process is ensured, and the reliability and practicability of the model are improved.

The invention discloses a flood storage and detention area flood diversion process simulation method and device based on a hydrodynamic model, and the method comprises the steps: obtaining the landform, river section, dike engineering parameters, and real-time hydrological and meteorological data of a flood storage and detention area, constructing a basic parameter library, and storing the basic parameter library in a data input module; constructing a hydrodynamic model calculation module by taking a hydrodynamic equation as a theoretical basis on the basis of the basic database, and combining a finite element volume method; receiving a numerical calculation result, analyzing real-time parameters through a dynamic simulation module so as to match actual hydrological parameters, and performing comparison under multiple scenes; and transmitting the hydrological parameters and the comparison data to a result output module, and outputting key parameters of the flood diversion process and a risk assessment result. The method has the advantages that high-frequency coupling of a hydrodynamic model, multi-source dynamic data, a cross-domain model and an engineering control system is achieved, and the problems of data lag, model isolation and control disjunction in traditional simulation are solved.

An ecological gabion comprises a river levee and a plurality of unit gabions filled with stones. And a plurality of plant health preserving systems consisting of planting bags, planting soil and secondary vegetation are arranged in stones in the unit gabions. A plurality of vertical reinforcing rods and at least two transverse reinforcing bands are arranged on the four iron wire walls of each unit gabion, and the reinforcing bands are wound around the vertical gabion net ribs and connected with the vertical reinforcing rods. The vertical reinforcing rods, the transverse reinforcing belts and the unit gabion net walls form a gabion reinforcing structure. A plurality of reinforcing sticks are piled in stones in the unit gabions, and the lower ends of the reinforcing sticks penetrate through iron gauze holes in the bottom surfaces of the gabions to be anchored in the river levee. The unit gabions, the stones in the unit gabions and a plurality of reinforcing sticks of which the upper parts are piled in the stones and the lower parts are anchored in the river levee jointly form the ecological gabion reinforcing structure. The ecological gabion is firm in structure and not prone to deformation. The stability and ecological environment protection capability of the river embankment are improved through the practical application of reinforcing the whole body and being compatible with ecology.

The invention relates to the technical field of dam water level monitoring, and discloses an automatic dam water level monitoring device based on the buoyancy principle. The outer surface of the stand column rod is provided with a water level monitoring assembly used for floating on the water surface to conduct water level detection and a protection cylinder used for protecting the water level monitoring assembly. According to the dam water level automatic monitoring device based on the buoyancy principle, the protection cylinder is arranged and used for protecting the water level monitoring assembly, so that impact interference caused by garbage in water to the water level monitoring assembly can be effectively prevented, fluctuation interference caused by surging of water ripples to the water level monitoring assembly is prevented, and the service life of the water level monitoring assembly is prolonged. And an auxiliary floating frame is arranged on the outer surface of the protection barrel, so that the protection barrel can adaptively adjust the protection height according to the change condition of the water level, and the protection range of the water level monitoring assembly is further widened.

The present invention discloses a tough protection device for embankments for preventing the impact of ice and floods, which relates to the technical field of water conservancy projects and includes: an embankment body, which is laid on both sides of the river bank parallel to the flow direction of the flood; a slope protection, which is laid on the surface of the embankment body, and an anti-seepage body for lowering the water level is also provided inside the embankment body; a wave-breaking wall, which is arranged on the top of the embankment body; protection components, which are arranged in multiple groups and fixedly laid on the slope protection on the water side of the embankment body; protection plates, which are arranged in multiple groups and fixedly set on two adjacent protection components; an ice-breaking component, which is arranged between the protection components, and the ice-breaking component passes through the gap between the protection plates toward the river channel; an arresting cable, one end of which is fixed to the bottom end of the protection component, and the other end can pass through the protection component and extend into the river channel.

【assignment】 Budgetary constraints make it difficult to build levees high enough to accommodate predicted tsunami heights. Construction of tsunami evacuation shelters has also been slow due to the risk of blocking visibility of the ocean. [Solution] By utilizing the existing coastal levee in front of us and stacking a tsunami evacuation shelter that protrudes higher than the levee height on its backside, we can be satisfied with the height and strength. Even if submerged by a tsunami, the box-shaped structure of the tsunami evacuation shelter retains air inside, so people can survive. Just like having an evacuation shelter right in front of you in your daily life, it is easy to gain support for raising the levee. Quick evacuation with the whole family is possible. Peace of mind 24 hours a day. Being prepared is a blessing. Being able to live each day safely and with peace of mind is truly a blessing.

The utility model discloses a water conservancy slope protection net in the technical field of water conservancy projects, which comprises a river levee, a slope surface is arranged on the side surface of the river levee, a plurality of slope protection geonets are arrayed and laid on the surface of the slope surface, and the corners of the slope protection geonets are overlapped with the corners of the other three adjacent slope protection geonets. A first clamping plate is placed at the corner of the lowermost slope protection geonet, a second clamping plate is placed at the corner of the uppermost slope protection geonet, through holes are formed in the first clamping plate and the second clamping plate in a penetrating mode, a screw is arranged below the first clamping plate, and the screw penetrates through the through holes in the first clamping plate and the second clamping plate and extends out of the second clamping plate. The part, extending out of the second clamping plate, of the screw is in threaded connection with a nut. By means of the first clamping plate, the second clamping plate, the screws, the nuts and the like, connection between the slope protection geonets is achieved, the structure is simple and easy to understand, manufacturing cost is lower, and the slope protection geonet connector has good market prospects.

The invention relates to the technical field of embankment foundation seepage prevention, in particular to an embankment foundation semi-closed seepage prevention method and system.According to the method, it is assumed that an embankment body is waterproof, the surface layer of an embankment foundation is a shallow permeable layer, the second layer is a relatively weak permeable layer, and a deep permeable layer is arranged below the second layer; and the thickness and the permeability coefficient of the anti-seepage supporting layer are determined, the depth of the semi-closed type anti-seepage wall entering the anti-seepage supporting layer is determined, and the arrangement range of the semi-closed type anti-seepage wall avoiding surrounding seepage damage is determined. According to the method, the semi-closed type anti-seepage wall and the anti-seepage supporting layer form a complete anti-seepage system, the design accuracy of the semi-closed type anti-seepage wall is ensured, and theoretical and technical supports can be provided for dike engineering design specifications about the design of the semi-closed type anti-seepage wall; and the method has important theoretical and engineering practical significance for promoting deep development of a semi-closed diaphragm wall technology. The technical problems that an existing design method is large in fuzziness and arbitrariness and high in safety risk can be solved.

The invention discloses a construction method for curing sludge while blowing sludge, which comprises the following steps of: filling sludge with two layers of film bags to form a fence for blocking sludge on the outer surface layer, and pumping floating water on the upper layer by using a sludge pump; sludge solidification is directly carried out on the reinforced area in an in-situ solidification mode, the hydraulic reclamation area is propelled from one side of the levee, and the next construction working face is fished out; curing in the cured area for 7 days, and moving the sludge curing equipment to the cured area after the strength is reached; a film bag is arranged at the solidification boundary to flush and fill the flow-state solidified soil, and sludge solidification equipment is adopted for assisting sinking to the bottom elevation + 0.22 m; carrying out in-situ solidification on the dredger-filled sludge soil in the rest area; after the in-situ curing area reaches the strength, sludge ex-situ curing construction is conducted in a layered mode, and the curing thickness of each layer is 0.8 m; and the flow-state solidified soil is constructed layer by layer in sequence to + 6.20 m. The construction process of in-situ curing and heterotopic curing is adopted, an effective construction channel and an effective construction platform are formed, and a guarantee is provided for the on-site production progress.

The invention discloses a particle diffusion detection device for embankment defect detection in the technical field of embankment structure defect detection, and aims to solve the problem that more defects of an embankment cannot be judged by detecting the flowing state of a water body through a traditional defect detection mode in the prior art. The device comprises a sealing box and a feeler lever installed on the sealing box, a hopper and an air injection pipe are arranged in the sealing box, the air injection pipe is communicated with a discharging pipe opening of the hopper, a collecting rod is arranged at the discharging opening of the hopper in the axis direction of the discharging opening in a sliding mode, a collecting groove is formed in the collecting rod, and a driving mechanism is arranged in the sealing box. The sealing box is further provided with an air connecting pipe and a nozzle which are communicated with the air inlet end and the air outlet end of the air spraying pipe respectively. The underwater spraying device is used for spraying different types of solutions or observation particles underwater, quantitative material taking and spraying can be carried out, and the underwater spraying device has good sealing performance and controllability and can be used for observing and analyzing different to-be-detected substances in various modes.

The application belongs to the technical field of shield construction, and discloses a method and system for early warning of settlement trend of shield construction crossing a dam; the method comprises the following steps: collecting silt layer geological data before the shield crosses the dam, and analyzing to obtain the distribution range and sensitivity level of the silt layer; collecting the tunneling parameters in real time in units of each ring when the shield machine crosses the silt layer section, and analyzing to obtain the disturbance index; collecting the real-time tunneling speed and the cutter head rotating speed, and recording the shutdown parameters when the complete shutdown condition is met; collecting the slurry tank pressure and the shutdown duration during shutdown, and calculating the pressure data; for the current sensitivity level, the preset hierarchical early warning rule is adopted, the current disturbance index basic threshold is corrected to obtain the corresponding dynamic threshold, the pressure data is compared with the dynamic threshold, and the early warning is issued according to the preset trigger logic classification; and the application improves the safety of shield construction crossing the dam.

The invention relates to the technical field of early warning of mountain torrent disasters, in particular to a method and a system for drawing a mountain area submerging range map based on a river network section water level. For an area between an upstream section and a downstream section and a branch convergence branch point related area, the grid point water level is calculated by adopting a mode of weighting according to river length and constructing virtual section combination weighting, and the influence of the grid point terrain elevation and the levee elevation of both banks of a river is considered; compared with an original method, the submerged range map drawn by the method is finer, the range is not too large, and the method is more practical. According to the method, the water level and the submerging water depth of each grid point in the area are calculated, so that compared with an original method, the submerging range can be obtained, the submerging water depth result of each point in the submerging range can also be obtained, the submerging degrees of different places in the submerging range are depicted more finely, and the work of early warning and disaster reduction of mountain torrent disasters can be better served.

The present invention relates to the technical field of levee hidden danger detection, and in particular to a state analysis method and system based on a data set. The method comprises the following steps: using a laser radar to detect the stratigraphic lithology of the levee, obtaining a multidimensional dataset of the levee, using GIS software to perform three-dimensional visualization processing based on the multidimensional dataset, and constructing a stratigraphic analysis map; based on the stratigraphic analysis map, using an unmanned boat and a submersible to monitor and analyze the hydrological data downstream of the levee, and generating a high-definition remote sensing image of the downstream levee; based on the high-definition remote sensing image of the downstream levee, using the sensor upstream of the levee to obtain a real-time multimodal dataset upstream of the levee, and using the real-time multimodal dataset upstream of the levee to perform cloud-based aggregation operations on the levee; based on the cloud-based dataset upstream of the levee and the downstream high-definition remote sensing image, using the levee hydrological artificial intelligence algorithm to construct a comprehensive levee decision support system; the present invention improves the efficiency of levee hidden danger investigation and analysis by processing the levee hidden danger dataset.

The utility model provides an old cofferdam heightening and reinforcing structure. The old cofferdam heightening and reinforcing structure comprises a plurality of reinforcing layers, a lime soil layer, a broken stone hardcore, a stone chip layer and a surface protecting layer. The reinforcing layer is composed of a plurality of pieces of filling bagged sand. The lime soil layer is laid on the reinforcing layer on the topmost layer; the broken stone hardcore is laid on the lime soil layer; the stone chip layer is laid on the broken stone hardcore; the surface protection layer is laid on the side surface of the reinforcing layer; the reinforcing layer is formed by filling a plurality of sand bags, the sand bags are formed by filling sand around the cofferdam into the filling bags, local materials are used, the construction speed is high, the construction cost is reduced, damage to the natural environment is reduced, and meanwhile the transportation cost is reduced. The cofferdam is heightened and reinforced by filling the bagged sand reinforcing layer, washing of water flow is prevented through the surface protecting layer on the side face, the lime soil layer, the broken stone hardcore and the stone chip layer are laid on the top face of the reinforcing layer, and the effect of heightening and reinforcing an original old cofferdam is achieved.

1. The name of the design product: embankment hidden danger detection vector sensor. 2. The use of the design product: used in the field of water conservancy engineering, specially buried or placed in the interior and surface of the dam, and the hidden dangers such as seepage and cavity are detected by sensing the vector information of physical field. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

To provide a metropolitan disaster prevention facility.SOLUTION: An urban disaster prevention facility comprises a tsunami-resistant ceiling river dike installed in a sea near a coastline and makes river water from both ends of a ceiling river along a coastline into the open sea. The urban disaster prevention facility comprises a ceiling river dike 5 not requiring land reclamation and is provided in a sea on a comparatively shallow seabed continuously from neighboring riverbanks of a plurality of neighboring rivers, and a tsunami countermeasure dike 7 that is provided on an open sea side of the ceiling river levee 5 not requiring land reclamation and has a plurality of openings 7a whose both ends connect to the coastline.SELECTED DRAWING: Figure 2

To provide a device that appropriately detects an object to be surveyed even when a top face of the foundation of a building is not uniform and has a complex shape.SOLUTION: The prevent invention is a device that performs a survey using point group data 7 and the like for, as objects to be surveyed 2, an anchor bolt 5 provided at an intersection part 4 of the foundation 3 of a building and a levee crown 6 provided at substantially the center of the intersection part 4. The surveying support device 1 comprises point group data acquisition means 11, vector angle acquisition means 12, contour extraction means 13, design data acquisition means 14, target extraction means 15, position detection means 16, and measurement means 17. The position detection means 16 detects a position from an arbitrary reference point 24 of the object to be surveyed 2 extracted from the point group data 7. The object extraction means 15 performs template matching by using a contour diagram 22 and design data 23, and extracts the object to be surveyed 2 obtained from the contour diagram 22.SELECTED DRAWING: Figure 1

1. Name of the design product: Sheet pile (Z-shaped). 2. Use of the design product: This design product is used in projects such as riverbank protection, levee protection, retaining wall, and foundation pit support for construction projects. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view of Design 1. 5. Design 1 is designated as the basic design. 6. This design product is an elongated item, and its length is drawn using an omission method.

The utility model relates to the technical field of river embankments, and discloses a river embankment leaking stoppage device which comprises a base, universal wheels are rotationally installed at the lower end of the base, a partition plate is fixedly installed at the upper end of the base, a leaking stoppage steel plate is arranged on the outer side of the partition plate, a lifting hole is formed in the surface of the leaking stoppage steel plate, and an avoiding groove is formed in the upper end of the partition plate. And a limiting plate is fixedly mounted in the partition plate. The device is provided with the leaking stoppage steel plates, the size of the leaking stoppage steel plates is 20m * 15m, the thickness of the leaking stoppage steel plates is 3mm, when a worker finds leaking holes in a river embankment, the leaking stoppage steel plates can be moved by a crane to cover the leaking holes, river water is prevented from continuously permeating into the river embankment through the leaking holes, the base is arranged, one leaking stoppage steel plate is placed on the river embankment every 5 kilometers, and the leaking stoppage steel plates are arranged on the base. Through mutual cooperation of the partition plates, the limiting plates and the transmission rollers, five leaking stoppage steel plates can be placed at the upper end of each base at the same time, through mutual cooperation of the universal wheels and the towing hooks, a worker can move the bases to the water leakage position through a trailer, and quick leaking stoppage is facilitated.

The invention relates to a river levee dam break flood prediction method and device, and belongs to the technical field of flood prediction, and the method comprises the steps: predicting the future boundary data of a river channel through employing a historical rainfall-river channel boundary fitting algorithm according to the forecast rainfall of a weather bureau, and carrying out the prediction of the river levee dam break flood based on the future boundary data of the river channel and a one-dimensional hydrodynamic coupling mathematical model; predicting a future river section water level and a future river section flow; based on the future river section water level and the future river section flow, determining the water depth and the flow velocity of a coupling interface by combining a discontinuous interface algorithm; the water depth and the flow velocity of the coupling interface are used as boundary conditions to act on the two-dimensional hydrodynamic coupling mathematical model, and a momentum flux correction method is combined to predict the future ground flood level, so that the problems of unbalanced still water and unstable prediction during flood level prediction are solved, and the flood level prediction accuracy is improved.

The utility model relates to the field of termite control, in particular to a bamboo tube type termite trapping and killing device which comprises at least one bamboo tube, one end of the bamboo tube is sealed through a bamboo joint, the other end of the bamboo tube is open, bait is placed in the bamboo tube, and a blocking piece used for blocking the bait from falling out is fixed in the bamboo tube. The termite trapping and killing device is very suitable for trapping and killing termites on reservoir dams or river levees with strip stone protection slopes and block stone protection slopes in water conservancy projects, is good in trapping effect and environmentally friendly, and greatly reduces pollution of chemicals to the environment.

The utility model discloses a dike drainage structure capable of reducing dike damage caused by rainstorm, which is arranged on a dike top surface and a dike slope surface and comprises two longitudinal plastic blind ditches along the dike top surface, and each longitudinal plastic blind ditch comprises an exposed part and a buried part; a plurality of transverse plastic blind pipes which are transversely and uniformly arranged are arranged on the top surface of the dike, and the two ends of the transverse plastic blind pipes are communicated with the buried parts of the longitudinal plastic blind ditches; a plurality of slope plastic blind ditches are arranged on the upstream face of the dike, the top ends of the slope plastic blind ditches are communicated with the buried parts of the longitudinal plastic blind ditches, and the lower ends of the slope plastic blind ditches extend to the bottom of the dike and then extend by one section in the horizontal direction. According to the utility model, the formation of gullies on the earth embankment top and the slope surface under the rainstorm condition can be obviously reduced, so that the safety of the embankment body and flood prevention is ensured; the device has the advantages of low manufacturing cost, high construction speed, long service life, simplicity and convenience in maintenance, low maintenance cost and good drainage effect.

This item is a gate for a rotary weir installed on a river overflow levee. The rotary weir consists of a weir column and a gate, and the gate has a through-hole that extends horizontally, as shown in the reference front view. By fitting a rotating shaft attached to the weir column into this through-hole in the gate, the gate becomes able to rotate. In the rotary weir, under normal conditions, the gate is in a vertical position, as shown in the reference front view, reference plan view, and reference cross-sectional view AA showing the normal state. In the event of a river flood, the gate rotates to a horizontal position, as shown in the reference cross-sectional view AA showing the flood state, thereby allowing water to flow from the river side to the regulating reservoir side.

The invention discloses a flexible composite anti-seepage thin wall system and a construction method thereof. The flexible composite anti-seepage thin wall system comprises a solidified soil anti-seepage thin wall, an omega-shaped core material capable of being assembled, an omega-shaped core material vertical fusion assembling sleeve, a nose-shaped positioning clamping piece and an omega-shaped core material concave connector bottom protection sleeve. The thin wall is formed at the middle position of the dike body by adopting vertical cutting in combination with spraying and stirring of the curing agent slurry, then the vertical anti-seepage core material capable of being spliced is implanted in the middle position in the thin wall, and the thin wall is bonded with the anti-seepage core material to form a whole after being cured, so that a flexible composite anti-seepage thin wall structure is formed at the middle position of the dike. The structure has the advantages of being good in flexibility, high in structural toughness, high in deformation adaptability, reliable in seepage prevention, low in investment, convenient to construct and the like.

The application discloses a kind of fusion distributed optical fiber acoustics embankment underwater pipe heaving detection positioning system, it is related to water conservancy engineering safety monitoring technical field, comprising: voiceprint signal perception preliminary screening module, for collecting original acoustic vibration signal in strong noise environment, and carry out preliminary purification and separation to it, obtain the intrinsic mode function of different frequency bands, separate out weak pipe heaving suspected signal submerged in background noise.The application maps the seepage network reasoned into high-precision fluid-structure coupling model by introducing digital twin technology, simulates the evolution process under extreme working conditions such as sudden change of water level in virtual space, so that the system can calculate the final breach form, size and position, and the consequences of pipe heaving disaster are pushed from the qualitative judgment to the quantitative prediction, realizing the dynamic deduction and quantitative prediction of pipe heaving disaster process based on physical mechanism.

The utility model relates to the technical field of riverway treatment, in particular to a riverway treatment trash holding device which comprises a cleaning mechanism fixed between river banks on two sides of a riverway, located in front of a riverway trash holding grating and used for fishing out trash in the riverway. The cleaning mechanism comprises two rectangular frames which are located in the river channel and fixedly connected with the side faces of the river levees at the corresponding positions, a round rod is arranged between the two rectangular frames, the two ends of the round rod are rotationally connected with sliding blocks sliding in the rectangular frames at the corresponding positions, and the outer wall of the round rod is fixedly connected with a fishing plate. Garbage on the water surface can be fished up through upward movement of the fishing plate, when the fishing plate moves to the top end of the rectangular frame, the fishing plate rotates by a certain angle to be in an inclined state, so that the garbage in the fishing plate rolls into the conveying mechanism, then the garbage is conveyed to a river levee through the conveying mechanism, and due to the fact that the fishing plate is in a horizontal state when the garbage is fished, the garbage can be conveyed to the river levee through the conveying mechanism. And rod-shaped garbage can be prevented from rolling into water again.