290 results about "River bed" patented technology

The invention relates to the technical field of bridge pier scour monitoring, discloses an air-water-shore cooperative overwater float type bridge pier scour monitoring system, and belongs to the technical field of bridge safety monitoring. According to the system, an integrated framework is formed by a buoy platform, a shore-based cooperative monitoring station and a cloud monitoring platform. The buoy platform is fixed to a pier through a mooring lead, the underwater sonar module of the buoy platform can scan the terrain of a riverbed at multiple angles, and the overwater module integrates high-precision positioning and video monitoring. The shore-based station is provided with a laser scanner and a high-definition camera to monitor the overwater structure and the macroscopic environment of the pier. The cloud platform serves as a control center, converges the multi-source data of the buoys and the shore stations through a communication network, carries out time sequence correlation and fusion analysis, and dynamically evaluates the scour pit development and the bridge pier structure state. According to the invention, the limitation of a single monitoring mode is broken through, collaborative acquisition and intelligent fusion of air, water and shore data are realized, the comprehensiveness, accuracy and early warning capability of monitoring are remarkably improved, and reliable guarantee is provided for safe operation of bridges.

The invention provides a river sediment physical habitat evolution identification method, device and system and a medium. The method comprises the following steps: acquiring a multi-temporal remote sensing image and hydrological data (flow Q, water level Zw and slope S), screening and other hydrological condition image pairs; extracting a water surface range, and calculating the average width B of the main groove; deducing the average water depth h by using a Manning formula, and calculating the riverbed elevation zbed by combining the Zw; the difference value delta zbed of zbed in different periods is calculated, and the substrate state is judged according to the difference value delta zbed and a threshold value epsilon; and performing segment processing along the center line to output a spatial distribution result. On-site measurement is not needed by relying on conventional data, and consumption is reduced; water level interference is eliminated through equal hydrological condition matching, and comparability is ensured; water depth inversion and differential analysis directly reflect scour deposition and quantitatively reveal rules; long-distance automatic processing improves space-time coverage capability and precision, and provides a basis for river regulation, ecological restoration and drainage basin management.

The invention relates to the technical field of river flow monitoring, and discloses a river flow control method and system based on image measurement. The method comprises the following steps: setting a space calibration point through a range finder, establishing a coordinate system, collecting a river image and carrying out geometric correction, calculating a water surface flow velocity by using an optical flow algorithm, calculating a sectional area by combining a water level and riverbed data, calculating an instantaneous flow rate after converting the surface flow rate into a vertical average flow rate, and generating control information according to an ecological flow rate condition. And controlling the opening degree of the water gate, the angle of the guide plate and the submerged adjusting dam according to the control information. According to the method, continuous and accurate measurement and calculation of the monitored section flow are realized based on an image acquisition means, a control mechanism linked with an ecological water demand threshold value is established, and the measurement process is ensured to be completed under a non-contact and remote control condition, so that the method is used for automation, intellectualization and ecological adaptability of water flow control of a dam.

The invention relates to the technical field of riverway desilting, in particular to a riverway self-adaptive desilting system and method based on intelligent water level perception, and the method is executed by a central control unit and comprises the four steps of model construction and benchmark calibration, real-time monitoring and siltation diagnosis, precise survey and operation planning and closed-loop execution and model synchronization. The system comprises a central control unit, a water level intelligent sensing array, terrain scanning equipment and dredging machinery, according to the method, the three-dimensional digital riverbed model is constructed, the sedimentation state is dynamically judged in combination with the water level sensing data, an accurate desilting operation scheme is generated, and operation closed-loop control is achieved. According to the method, navigation and ecological riverway dredging requirements are considered, the dredging precision and automation level are improved, the operation cost is reduced, intelligent transformation of riverway management is promoted, and an efficient solution is provided for long-acting treatment of the riverway.

The application discloses a method for predicting the flow velocity along the course of a river with floating vegetation, and the river with floating vegetation is divided along the water flow direction of the river according to the flow regulation distance, and the water flow direction velocity prediction model of the river with floating vegetation is constructed to realize the prediction of the flow velocity along the course of the river, so as to provide a theoretical basis for further research on the water flow, sediment movement characteristics and riverbed evolution of the natural river and lake with floating vegetation.

Embodiments of the present application disclose a river bed load transport characteristic determination method and device, electronic equipment and a computer readable medium, relating to the field of engineering technology. The method performs fast Fourier transform on the sound pressure signals of the microphone array to obtain a sound pressure matrix in the frequency domain; based on the sound pressure matrix, cross-spectrum operation is performed to obtain a cross-spectrum matrix; based on each scanning grid point j on the surface of the monitoring sensor plate as an imaginary sound source point, a sound propagation model is selected according to the aerodynamics theory to determine the sound signal monitored by any microphone; each grid point is scanned, the auto-spectrum of the simulated sound signal is calculated, and the sound source holographic image of the bed load shock wave is determined; the sound source intensity is simulated, the bed load spatial position is obtained, and the bed load particle size component information is obtained through the calibration function relationship. That is, in the present application, the bed load spatial position and the bed load particle size component information are obtained, this method can accurately determine the transport characteristics of the bed load, and becomes an important support for quantifying the disaster prevention and reduction work of mountainous rivers.

This product is a formwork block used when manufacturing riverbed protection blocks to be installed on the riverbed, and is particularly used in areas adjacent to the slope of the revetment. As shown in the reference perspective view illustrating each part, reference diagram 1 (plan view) illustrating each part, reference diagram 2 (front view) illustrating each part, and reference diagram 3 (plan view) illustrating each part, at the block installation site on the riverbed, this product is erected at two corner positions in a square shape in plan view, on the slope side of the revetment, so that the tapered portion of this product is in contact with the slope. At the other two locations, formwork blocks as shown in the reference perspective view illustrating standard type formwork blocks are erected, and adjacent formwork blocks are connected with formwork plates to form a square-shaped structure in plan view, and concrete is poured into this structure to manufacture the riverbed protection block. As shown in the reference diagram illustrating the state in which revetment blocks are installed on the riverbed, riverbed improvement work is carried out by installing a revetment-type revetment block using this product on the riverbed so that one end is in contact with the slope of the revetment, and another standard-type revetment block is installed in contact with the other end of the revetment-type revetment block, thereby laying down multiple revetment blocks.

The utility model discloses a deep tail water channel structure arranged in a downstream river channel of a hydropower station workshop, which comprises a tail water channel arranged in the river channel, the longitudinal slope of the tail water channel is slowed down to the longitudinal slope of the river channel, and the channel bottom elevation of the starting end of the tail water channel is 5-30 meters lower than the riverbed elevation. The height difference between the surface of the tail water channel bottom plate and the surface of the riverbed is gradually reduced, and the tail water channel bottom elevation is consistent with the riverbed elevation when reaching the tail end of the tail water channel. According to the deep tail water channel structure arranged in the downstream river channel of the hydropower station workshop, it is guaranteed that power generation water heads are increased, and it can be guaranteed that tail water is smoothly discharged into the river channel.

To provide revetment blocks which can be easily connected to each other, and which can firmly protect a river bed, a sea bottom, a slope, a coast, a river bank, etc.SOLUTION: Three branch parts 21-22 which are radially arranged, rod-shaped, and made of concrete, and which are fixed to an 2b of a branch end of each of the branch parts 21-22 and arranged in a direction orthogonal to an axial direction of each of the branch parts 21-22; In the revetment block 1A, the axial centers of the leg parts 3 are all arranged in the same direction, and the axial center position of one (branch part 21) of the three branch parts 21-22 in the axial center direction of the leg part 3 is different from the axial center positions of the other two branch parts 22 by the thickness of the branch parts 21-22.SELECTED DRAWING: Figure 1

The invention relates to the technical field of tunnel monitoring, and discloses an underwater tunnel structure health monitoring multi-source fusion and quality enhancement system and method, and the system comprises a sensing layer which is used for collecting the multi-source physical state information of a tunnel structure, and comprises the following subsystems: a structure stress state monitoring subsystem which employs a fiber bragg grating concrete strain gauge, the device is arranged at the maximum bending moment position of a tunnel roof and a longitudinal construction joint of a side wall to monitor concrete strain in real time. According to the system, a full-dimensional monitoring network covering tunnel structure stress, deformation joint multi-dimensional deformation, water leakage, differential settlement, internal water accumulation and overlying riverbed scouring and silting is constructed through cooperative arrangement of point type sensors and distributed sensing optical cables, accurate monitoring of key point positions is achieved, large-range continuous monitoring is achieved, and the monitoring precision is improved. The problem that traditional monitoring only focuses on a single dimension and has a monitoring blind area is thoroughly solved.

The utility model discloses a pile foundation scouring comprehensive protection structure which comprises a steel pipe pile and a scouring pit around a pile foundation of the steel pipe pile, and further comprises a three-maintenance ring which is fixed to a riverbed, used for limiting water flow around the pile foundation in a protection ring cavity, located on the outer side of the steel pipe pile and spaced from the steel pipe pile by a certain distance. The rear end of the three-maintenance ring is provided with an opening used for guiding water flow in a cavity of the retainer to flow out, the outer wall of the three-maintenance ring is two sections of S-shaped curved surfaces which are in smooth transition and are not equal in wall thickness, the upper curved surface is a curved surface protruding towards the outer side, and the lower curved surface is a curved surface recessed towards the inner side. Erosion of horseshoe vortexes to a riverbed is reduced, and therefore the pile foundation scouring depth is greatly reduced.

The utility model discloses a double-pile type L-shaped embankment structure which comprises pile foundations, a concrete cushion layer, an L-shaped wall body, handrails, a broken stone cushion layer and grouted rubble. The pile foundation is driven into an original embankment foundation, the concrete cushion layer is laid on the original embankment foundation, the L-shaped wall body is arranged on the concrete cushion layer, the upper end of the pile foundation penetrates through the concrete cushion layer into the L-shaped wall body, the side, close to a riverbed, of the L-shaped wall body is connected with the broken stone cushion layer, and the broken stone cushion layer is arranged on the riverbed. The rubble hardcore is provided with grouted rubble; backfill soil is arranged on the side, away from the riverbed, of the L-shaped wall body, and a road is arranged on the backfill soil; and the handrails are arranged on the L-shaped wall body. The double-pile type L-shaped embankment structure provided by the utility model aims to overcome the existing defects, is stable in structure, convenient to construct and low in manufacturing cost, and ensures the protection function of the embankment.

This invention relates to the field of sediment prediction technology, specifically to a method for predicting sediment deposition in waterways based on a hydrodynamic model. The method includes the following steps: correcting the critical initiation velocity of sediments using the biomass, metabolic rate, and biofilm thickness of the microbial community to obtain a corrected critical initiation velocity; calculating the actual suspended sediment concentration in the waterway based on the corrected critical initiation velocity, combined with the turbulence intensity, propagation distance, and draft of the ship's wake; and calculating the sediment deposition volume in the waterway based on the suspended sediment concentration, combined with the cementation strength, water content, and organic matter decomposition rate of the surface sediments. This invention comprehensively considers ecological and navigation-related influencing factors and improves prediction accuracy in complex scenarios.

The utility model discloses a stepped dam capable of automatically discharging silt, which relates to the technical field of water conservancy projects and comprises a dam main body, a dam main body and a dam main body, the weir bank is arranged in the energy dissipation pool, is arranged in an arc shape and is in stepped connection with the dam main body; the axis of the silt flushing pipe is parallel to the main flow direction of a river channel; the silt discharging pipe is arranged at the bottom of the energy dissipation pool, and a horn-shaped silt collecting opening is formed in the inlet end of the silt discharging pipe and is vertically communicated with the silt flushing pipe; a square flap valve is arranged at the inlet end of the silt flushing pipe, and the weight of the square flap valve is configured to be automatically opened when the water depth exceeds the top surface of the dam by 20 cm; according to the technical scheme, the weir bank which is arranged in the arc shape and connected with the dam body in the stepped mode is arranged in the energy dissipation pool, the hydraulic jump phenomenon can be generated in the energy dissipation pool, impact on a downstream riverbed is reduced, the silt discharging process can be completed without manual intervention, and the energy dissipation pool is particularly suitable for the unmanned management state in rural areas.

The application relates to the technical field of cofferdam structures, in particular to a bridge pier construction cofferdam structure which comprises a guide base and a cutting; further comprising a guide assembly which comprises a first guide module and a second guide module, the first guide module comprises fixing seats arranged on both sides of the guide base, and a sliding groove is arranged on the fixing seat, a sliding block is movably arranged in the sliding groove, and a guide frame is fixedly arranged on the sliding block; the guide assembly can smoothly fix the guide base on a riverbed, then a water under motor is started to drive the rotating shaft to rotate, the reel tightens the steel cable, the expanding part expands to the riverbed, the stability of the cutting is improved, the first guide module is fixed on the upper end of the arc-shaped rack before this, when the rotating shaft rotates, the end of the guide wheel is in the same horizontal plane with the inner arc surface of the guide base, the guide wheel positions the outer arc surface of the steel pile, the guide and the anti-deviation are completed by cooperating with the fixed cage, and the steel pile smoothly penetrates into the bedrock layer.

The invention discloses a scouring sonar precision testing device and method in a sand-rich water flow environment, and belongs to the technical field of pier scouring monitoring, the testing device comprises a water tank body, the water tank body is internally filled with water and accommodates a riverbed sand layer and an underwater distance measurement sonar, and the riverbed sand layer is laid at the bottom of the water tank body; a circulating water flow pipeline is connected between the water tank water inlet and the water tank water outlet; a water pump, a flow regulating valve and a sand adding opening are arranged on the circulating water flow pipeline; an underwater ranging sonar to be tested is mounted at the top of the water tank body through a vertical mounting rod, and the vertical mounting rod drives the underwater ranging sonar to perform height adjustment, so that an acoustic window of the underwater ranging sonar is located at a predetermined water depth position; at least one side tank wall of the water tank body is transparent and is used for observing the flow state in the water tank body and the river bed scouring form, and scale marks are arranged on the transparent tank wall and are used for reading the actual heights of the water surface and the surface of a river bed sand layer. The testing device is simple and compact in structure and can provide calibration basis for engineering application.

The dam bending monitoring section layout method and device provided by the present disclosure comprises the following steps: determining a monitoring section of a target dam according to a riverbed center axis of a riverbed region where the target dam is located; determining a first control point according to a projection intersection point of the riverbed center axis and a dam axis of the target dam on a preset plane; determining at least one second control point according to an upstream side axis in the riverbed center axis and at least one third control point according to a downstream side axis in the riverbed center axis; and performing equipment layout on the monitoring section according to the corresponding layout positions of the first control point, the second control point and the third control point on the monitoring section, so as to perform safety monitoring on the target dam. The method provided by the present disclosure can obtain a bending monitoring section and realize reasonable layout of the monitoring section, so as to realize safety monitoring on the target dam.

The application provides a construction method of a natural river channel and overbank wetland, comprising the following steps: S1: constructing a natural river channel and three-stage overbank in a riverbed according to historical daily flow statistical characteristics, so as to adapt to river channel flow characteristics under different rainfall scenarios; and S2: constructing overbank wetlands with different characteristics according to selected overbank types. The application relies on overbank wetlands to comprehensively improve the ecological service function of the river channel; in a non-rainfall scenario, the service functions of landscape, soil conservation, wind prevention and sand fixation are realized; and in a rainfall scenario, the service functions of reducing non-point source pollution, storing flood, and improving water environmental quality are mainly played.

The invention provides a river bed elevation space-time evolution trend prediction method based on section topography. The method comprises the following steps: acquiring first river bed elevation parameters, first distance parameters and second distance parameters of a plurality of sections in a target river reach; each section comprises at least one preset observation point; determining a second riverbed elevation parameter of each section under the target water level parameter according to the first riverbed elevation parameter, the second distance parameter and the first distance parameter; the target water level parameter is a water level parameter of a section characteristic water level; determining a target model of the target river reach based on the second riverbed elevation parameter; and predicting the section according to the target model to obtain the target riverbed elevation parameter of the section, so that discrete observation data can be integrated into a unified index representing the overall state of the section, and standard input is provided for the prediction model, thereby improving the prediction accuracy of the average elevation state of the riverbed.

The invention relates to the crossing field of water conservancy projects and computer simulation technologies, in particular to a river and canal protection engineering failure dynamic judgment and boundary updating method, which comprises the following steps of: marking a protection engineering area and setting the protection engineering area as a non-scour boundary during simulation initialization, and calculating hydrodynamic parameters such as water depth and flow velocity in each time step; comparing with the water depth-flow velocity relationship of a gabion, the design flood control standard of a stilling pool, the bottom elevation of an anti-scour wall and other anti-scour thresholds, if the thresholds are exceeded, judging that the boundary is invalid and dynamically updating the boundary to be a scoured boundary, and continuing simulation by combining dynamic dry and wet grid judgment and GPU parallel calculation; according to the method, water flow-sediment-riverbed-protection engineering collaborative simulation is achieved, the progressive damage process is precisely restored, the erosion and deposition simulation error is lower than 9%, universality is high, and a reliable quantification tool is provided for flood control safety evaluation and optimization design of wading projects such as river and canal crossing engineering.

The utility model relates to the technical field of water conservancy projects, in particular to a modularized water stop structure for flood control. The anti-flood structure comprises a plurality of anti-flood modules, a plurality of fixing piles and a plurality of connector assemblies, the connector assemblies are arranged on the anti-flood modules, each anti-flood module comprises a connecting frame, the anti-flood modules are spliced to form a water stop barrier, the fixing piles and the connector assemblies are fixed in an inserted mode, and a pre-stopping water stop plate is connected between the upper connecting frame and the lower connecting frame in a sleeved mode. Pointed ends are arranged at the bottoms of the fixing piles, and the fixing piles are inserted into a riverbed or dam fixing structure body. All the components of the modularized water stop barrier system are prefabricated parts, and can be directly transported to a construction site to be assembled after being produced in a factory. The installation process is simple and convenient, the construction time is shortened, and the requirements of flood control and emergency rescue can be quickly responded. The module is high in adaptability, and the combination mode and the installation position of the module can be flexibly adjusted according to different terrains and breach sizes.

The invention discloses a riverbed type plant dam section anti-sliding stability safety coefficient prediction method, which comprises the following steps of: acquiring actually-measured deformation data of a plurality of monitoring points of a riverbed type plant dam section in a time interval, and eliminating an aging component in the actually-measured deformation data as a monitoring value; substituting the time-varying parameter inversion target function to obtain the time-varying parameter of the dam section rock mass in the time interval through inversion; in the time interval, finite elements are adopted to calculate the anti-sliding stability safety coefficients of the dam section under multiple groups of different upstream water levels, downstream water levels and uplift pressure reduction coefficients; repeating all the previous steps in a plurality of continuous time intervals, and then training the SVR model by adopting the upstream water level, the downstream water level, the uplift pressure reduction coefficient, the time-varying parameter and the anti-sliding stability safety coefficient of all groups to obtain a prediction model; and obtaining the upstream water level, the downstream water level, the uplift pressure reduction coefficient and the time-varying parameter of the river bed type plant dam section at the monitoring moment, and inputting the prediction model to obtain the anti-sliding stability safety coefficient at the monitoring moment.

The utility model discloses a multi-layer sediment sampling device for water and soil conservation measurement, relates to the technical field of multi-layer sediment sampling, and aims to solve the problem that when sediment in a riverbed and a mud beach is sampled in a sampling area with higher humidity, if a conventional sediment sampling device is adopted, the sediment in the riverbed and the mud beach cannot be sampled due to higher soil flowability. The cylindrical sediment sampling device comprises an outer pipe, a rotating shaft I, a sediment sampling device, a connecting pipe and a driving mechanism, the outer pipe is of a semi-cylinder structure, a plurality of rotating cavities are formed in the outer pipe, the rotating cavities are semi-cylindrical cavities, a rotating shaft I is rotationally connected into the outer pipe, the rotating shaft I and the outer pipe are concentrically arranged, a semi-cylindrical sand taking device is rotationally connected into each rotating cavity, and a semi-cylindrical sand taking cavity with an opening in the end face is formed in each sand taking device. And the plurality of sediment sampling devices are fixedly connected with the rotating shaft I. The multi-layer sediment sampling device is used for multi-layer sediment sampling.

The application discloses a complex riverbed special-shaped steel casing reinforced deep water pile foundation, a pile foundation structure and a construction method, and belongs to the technical field of bridge reinforcement. The scheme comprises a construction platform, a support assembly and a radial adjusting mechanism, and the casing assembly is composed of an upper rigid casing and a lower flexible casing. During construction, the adjusting mechanism drives the frame unit to move in the radial direction, the enclosed hole diameter is changed to adapt to different pile diameters, after the casing is lowered, the lower flexible casing supports the flexible skin by using the lining framework, and is self-adapted to the irregular riverbed contour. The application can adapt to different pile diameters by using the variable-diameter tool, solves the sealing problem of the inclined riverbed by using the flexible casing, realizes full water operation, does not need a diver to seal underwater, effectively prevents concrete from leaking, and significantly improves the construction efficiency and safety.

This product is a formwork block used when manufacturing riverbed protection blocks to be installed on the riverbed or coastline. As shown in Reference Diagram 1 (Plan View), Reference Diagram 2 (Front View), and Reference Diagram 3 (Plan View) illustrating the usage of each part, the formwork blocks of this product are erected at the corners of a square-shaped area in the riverbed where the blocks will be installed. Adjacent formwork blocks are connected with formwork plates to form a square-shaped structure in the plan view, and concrete is poured into this structure to manufacture the riverbed protection blocks. Then, as shown in the reference diagram illustrating the state in which the riverbed protection blocks have been installed on the riverbed, riverbed improvement work is carried out by laying multiple standard-type riverbed protection blocks using this product and revetment-type riverbed protection blocks with one end in contact with the slope of the revetment on the riverbed.

The invention relates to the technical field of bed sand sample collection, and discloses a riverbed sand sample collection method, which comprises the following steps: connecting a rope with a connector, lifting the rope to keep a sand excavation cylinder in a longitudinal arrangement state, enabling the sand excavation cylinder to fall into a water body from top to bottom, and enabling the water body to enter a sand excavation cavity through a water permeable hole until the whole sand excavation cylinder is submerged into the water body; the sand excavation cavity is filled with water; the sand excavation barrel continues to be put down in the water body until the bottom plate abuts against the riverbed, then the rope is put down by a set length so that the sand excavation barrel can fall down to be in a horizontal shape, and the two balance weight levers can automatically rotate and be adjusted so that the two balance weight levers can abut against the riverbed; after the sand excavation barrel is kept standing in a horizontal state for a set time, the rope is pulled to drive the sand excavation barrel to move, the sand excavation opening is downwards and obliquely inserted under the balance weight effect of the balance weight rod, and sand on a riverbed enters the sand excavation cavity through the sand excavation opening; after the sand excavation cylinder is pulled by the rope to move by a set distance, the rope is lifted to lift the sand excavation cylinder out of the water body, and sand sample collection is completed.

The utility model belongs to the technical field of mechanical arms, and particularly relates to a water transfer channel dredging mechanical arm which comprises a mechanical arm body and a dredging cover, the dredging cover is arranged at one end of the mechanical arm body, a plurality of detection assemblies are arranged at the bottom of the dredging cover, and the detection assemblies are arranged on the mechanical arm body. The multiple detection assemblies are distributed around the axis of the desilting cover at equal intervals, a desilting assembly is arranged at the top end of the mechanical arm body, the bottom end of the desilting assembly penetrates through the top end of the desilting cover and extends to the bottom of the inner side of the desilting cover, and a mounting flange is fixedly connected to the bottom end of the outer wall of the desilting cover. And the detection assembly comprises a cylinder fixedly communicated with the top end of the mounting flange. According to the dredging device, the dredging cover is conveyed to the bottom of the channel through the mechanical arm body, whether the bottom end of the dredging cover reaches the bottom end of the channel or not is detected through the detection assembly, after the dredging cover reaches the bottom end of the channel, sludge is pumped outwards through the dredging assembly, the dredging effect is achieved, and damage to a channel riverbed can be avoided.

The bridge pile foundation with the good anti-scouring effect comprises a pile foundation column, positioning lantern rings are installed at the bottom and in the middle of the pile foundation column, a plurality of telescopic assemblies with the adjustable length are installed on the outer walls of the positioning lantern rings at equal intervals, net clamps are installed at the tail ends of the telescopic assemblies, net sleeves are arranged between the net clamps in a limiting mode, and the net sleeves are connected with the telescopic assemblies. The gravel layer is filled among the pile foundation column, the net sleeve and a riverbed to form an annular structure, under the impact of water flow, the net sleeve can play a preliminary buffering role and slow down direct scouring of the water flow to the gravel layer, and the gravel layer further disperses the energy of the water flow and reduces the speed of the water flow, so that dual protection is formed for the pile foundation column; the anti-scouring capacity of a bridge pile foundation is remarkably improved, the situation that the underwater part of a pile foundation column inclines or is damaged due to local scouring is effectively prevented, a column casing in the telescopic assembly can slide in a sliding groove of a guide rail, a second bolt penetrates through a through hole and a limiting hole and then is connected with a nut, and the column casing can be fixed to the specific position.

The utility model discloses a river channel slope protection piece and the riverbed dredging device of cooperation use, including a plurality of slope protection mechanism, every slope protection mechanism top, slope protection mechanism includes the flat board, and both sides of flat board one end are fixedly equipped with the lug, and the lug between two is provided with first end head part, and slope protection mechanism still includes second end head part, and the middle part slope protection subassembly is provided with between first end head part and second end head part, and the middle part slope protection subassembly includes a plurality of intermediate slope protection board. The utility model discloses the cooperation of dredging subassembly between slope protection mechanism and drive mechanism, and slope protection mechanism forms the inclined channel, and two drive mechanisms cooperate and drive dredging subassembly to move reciprocating in the river channel, and then make dredging subassembly go up along slope protection mechanism, and the inclined channel formed ensures that water flows quickly, and guarantees the movement of dredging subassembly, ensures that personnel to the dredging of river channel, and use more convenient.

The round-end-shaped bridge pier anti-scouring device comprises a round-end-shaped bridge pier, the overlook section of the round-end-shaped bridge pier is composed of semicircles at the two ends and a rectangle in the middle, and a plurality of flow guide sheets are arranged around the round-end-shaped bridge pier in an up-down parallel mode at equal intervals; the diversion sheet comprises two semi-circular sheets and an equal-width strip-shaped sheet connecting the two semi-circular sheets together, and semi-circular arcs of the two semi-circular sheets wrap the semi-circular end faces of the two longitudinal ends of the bridge pier and are fixedly connected with the two equal-width strip-shaped sheets to be arranged on the round-end-shaped bridge pier. According to the anti-scour device provided by the invention, a group of parallel flow guide sheets are mounted on the round-end-shaped pier, so that three-dimensional flow near the pier can be effectively converted into planar two-dimensional flow, vortex generation is reduced, hydrodynamic conditions for scour a riverbed can be obviously reduced, scour around the pier is obviously reduced, and the safety performance of a bridge is improved; and the pier scouring protection cost is greatly reduced, the market application prospect is wide, and the social and economic benefits are huge.