13 results about "River mouth" patented technology

The invention relates to the technical field of water conservancy projects, and discloses an estuary channel erosion and deposition control method and system based on water column wave energy collection and release. According to the method, wave energy is captured through an oscillating water column air chamber with a bottom opening, bidirectional airflow is converted into unidirectional high-pressure airflow through an airflow rectifying unit, and the unidirectional high-pressure airflow is stored in a high-pressure energy storage container; the system monitors the flow velocity of a channel and the air pressure of the energy storage container in real time, only when the flow velocity meets a preset ebb tide transportation condition and the air pressure is higher than a critical threshold value, a trigger instruction is generated, after the instruction is responded, high-pressure gas is injected into the gas-liquid replacement excitation cavity sinking to the bottom, and water in the driving cavity forms high-speed hydraulic jet flow through a Laval nozzle to impact bottom mud. After jet flow is finished, the cavity exhausts air and relieves pressure, the external water body reversely flows back through the hydrostatic pressure of the environment, and suspended sediment is entrained and sucked. Through the cyclic operation, energy self-sufficiency, intelligent opportunity selection operation and efficient dredging are achieved, the operation cost and the environmental influence are reduced, and the method is suitable for remote and unattended navigation channel maintenance.

The invention provides an underwater sound tomography inversion precision and measurement distance improvement method and system based on a flexible sound energy reinforcing material, and the method comprises the steps: carrying out a simulation experiment in which parameters continuously change along with the position according to the Snell's law, and determining the sound velocity and thickness parameters of a to-be-prepared flexible sound energy reinforcing material through the relation between the refractive index and the sound velocity; the mass fraction of a matrix and a scatterer of the flexible sound energy reinforcing material is calculated, then the flexible sound energy reinforcing material is segmented based on parameter values and then prepared respectively, the flexible sound energy reinforcing material is obtained, finally, the temperature and the flow velocity are inversed through the transmission time difference of signals of the two hosts, and real-time temperature flow monitoring is achieved. The system can meet long-term real-time observation requirements of water flow of most estuaries and coastal areas, has the advantages of continuous monitoring, high energy utilization rate, high temporal-spatial resolution, wide coverage range, non-contact measurement, few required sites, high adaptability and the like, and provides technical support for hydrological monitoring engineering.

The invention relates to the technical field of marine ecological environment monitoring, in particular to a sky-land-sea integrated marine environment monitoring network construction method. Comprising the following steps: comprehensively acquiring multi-dimensional marine environment elements through a multi-level collaborative sensing network consisting of satellite remote sensing, a low-altitude unmanned aerial vehicle, a marine buoy and a shore-based automatic monitoring station; constructing a unified data access and processing platform, integrating and fusing multi-source monitoring data of the sky, the air, the ground and the sea, and performing standardization processing; a flexible data query service is provided through a GraphQL interface, multi-dimensional retrieval according to a space-time range and a parameter type is supported, a multi-modal artificial intelligence analysis model is integrated, and intelligent recognition, generation and prediction capabilities are provided; by means of the mode, comprehensive, multi-element and high-frequency monitoring on the ecological environment of the watershed, the estuary and the bay is achieved, and the change situation of the marine ecological environment and the distribution, number and quality situation of ecological resources can be known.

The application discloses a kind of based on spectroscopy and intelligent algorithm's river mouth water quality rapid detection method for discharging, it is related to water quality detection technical field, comprising the following steps: S001, establish spectrum and time series joint observation layer, obtain water body reflection light signal by the dual polarization scanning and multi-angle calibration in incident path, generate multidimensional spectral baseline matrix;S002, based on multidimensional spectral baseline matrix executes coherent phase analysis, the spectral signal in reflection path is decomposed layer by layer, extract the distribution characteristic map of optical interference order, and generate the shield mask of optical interference wave band.The application is realized to the accurate identification and correction of the spectral distortion caused by oil film interference by multi-angle optical acquisition, coherent phase analysis and multi-source data fusion, and constructs dynamic pollution track and adaptive threshold barrier, effectively improves the identification sensitivity, response speed and system stability of river mouth water quality detection for discharging.

The utility model discloses a foldable estuary flow velocity measuring marker post, and relates to the technical field of water conservancy instruments. The device comprises a measuring support rod, the upper end of the measuring support rod is fixedly connected with a box body, a controller is fixed in the box body, and the lower end of the measuring support rod is rotatably connected with a fixed rod through a hinge shaft. According to the estuary flow velocity measuring marker post, the limiting insertion rod is pulled upwards, the lower end of the limiting insertion rod is moved out of the limiting insertion hole, the fixing rod can be folded upwards around the hinge shaft, the fixing rod is fixed by screwing one end of the locking bolt into the threaded hole, the space occupied by the estuary flow velocity measuring marker post can be reduced, and the estuary flow velocity measuring marker post is convenient to use. A ground inserting sharp rod is driven to move downwards by rotating a clockwise rotating screw rod, the extending length of the ground inserting sharp rod can be adjusted, then the distance between the flow velocity sensor and the river mouth water bottom can be adjusted, the river mouth flow velocity of different water levels can be measured, and the practicability is higher.

The utility model discloses a river channel discharge port sewage purification device, and relates to the technical field of sewage treatment. The number of the filtering mechanisms is two, the two filtering mechanisms are both arranged on the foundation, each filtering mechanism comprises a limiting component, a position adjusting component, a cleaning plate and a filtering net, a water inlet is fixedly connected to one side of the top of the foundation, the limiting component is arranged in the water inlet, and the filtering net is arranged on the limiting component. According to the river channel discharge port sewage purification device, through the use of the filtering mechanism, garbage impurities in sewage can be intercepted and treated from the perspective of physical filtering, the filtered garbage impurities are pushed out through the cleaning plate, and the situation that the filtering effect of the filtering net is affected is avoided; the filter plate can be positioned and controlled, meanwhile, the filter plate can be controlled to be replaced and positioned, the using effect is guaranteed, and the filter plate is simple in structure and easy and convenient to use.

The invention relates to the technical field of erosion and deposition monitoring, and discloses a self-adaptive seabed erosion and deposition monitoring and early warning method for an estuary navigable water area, and the method comprises the following steps: S1, obtaining a corrected vertical motion sequence; s2, calculating a dimensionless blocking coefficient, and constructing a heterogeneous observation array; s3, generating a sinking residual error for the detection ship; s4, performing frequency domain transformation on the vertical sequence of the detection ship, and extracting low-frequency inertia and high-frequency flow-induced turbulence characteristics; s5, differential verification is carried out, and a heterogeneous differential ratio is constructed; and S6, constructing a feature vector based on the sinking residual error and the heterogeneous difference ratio, judging the erosion and deposition state by using decision logic, and outputting an early warning. According to the method, a commercial ship is adaptively converted into a detection and reference ship by calculating a dimensionless blocking coefficient, and a hydrodynamic response is captured by using AIS and GNSS data; special measuring equipment is not needed, the problems that traditional surveying and mapping are long in period, high in cost and prone to interference are solved, and monitoring timeliness is improved.

The invention relates to the field of ship hydrodynamics and numerical simulation, and discloses a giant estuary ship navigation capability numerical simulation model test method, which comprises the following steps: executing a prospective preparation step, and constructing a baseline physical model; executing a baseline simulation and dynamic risk assessment step, performing navigation simulation under the driving of the baseline physical model, and calculating a dynamic risk potential field value in real time; when the dynamic risk potential field value exceeds a trigger threshold value, executing a high-fidelity instantiation step, and activating a high-fidelity physical kernel module; an asynchronous coupling calculation step is executed, and the accurate hydrodynamic force calculated by the high-fidelity module is used for replacing a ship body hydrodynamic force item in the baseline ship control model; when the dynamic risk potential field value is continuously below a degradation threshold, a model degradation step is performed, and calculation of its inherent hull hydrodynamic terms by the baseline ship manipulation model is resumed. By means of the dynamic switching mechanism, high-precision computing resources are only input in a necessary high-risk section, and efficient simulation is maintained in a low-risk section.

The invention relates to the technical field of water conservancy project planning and operation management, and discloses a construction position and scheduling scheme optimization method for a salt tide upstream resisting effect, and the method comprises the steps: obtaining basic water power and geological data of a river mouth of a drainage basin, and removing an unstable region to determine a feasible construction range of a tide gate; establishing an estuary two-dimensional numerical simulation model, and calibrating by using measured data to obtain an effective model; setting a plurality of candidate positions in the model, simulating a salt tide upstream process, and determining an optimal construction position by comparing salinity indexes; arranging a gate at the optimal position, simulating various scheduling working conditions, and determining an optimal scheduling scheme. According to the method, space site selection and time scheduling optimization are coupled, the salt resistance efficiency of different sections and mean value threshold scheduling modes is quantitatively evaluated through numerical simulation, a salt water channel is accurately cut off in the flood tide high-water-level period, the average salinity of an estuary area and the salinity of key measuring points are reduced, and the safety of estuary fresh water resources is effectively guaranteed.

The utility model relates to water treatment technical field especially a kind of river mouth microbial inoculant feeding device, including control unit, the control unit connects water quality monitoring module and dosing pump, the water quality monitoring module is located at river mouth underwater, the dosing pump connects inoculant storage tank and conveying unit, the conveying unit is arranged along riverway revetment, the conveying unit is equipped with several automatic rotating spray heads. The utility model can be set on river mouth revetment, can realize the real-time monitoring to the water quality near river mouth and automatically feeds inoculant, and inoculant feeding range is large, and input cost is lower, conducive to later maintenance.

The application discloses a branch stream port gate dam and a reservoir area siltation control method based on the gate dam, and relates to the technical field of dam construction, which comprises the following steps: building a gate dam at each branch stream port with large reservoir capacity in the reservoir area upstream of the main stream dam; the main body of the gate dam is the branch stream dam, the upper part and the lower part of the branch stream dam are respectively provided with surface holes and bottom holes, and the surface holes and the bottom holes are respectively provided with gates for controlling the opening and closing of the bottom holes and the surface holes; the reservoir gate dam operation mode is as follows: in the non-flood season, all the gates of the branch stream port gate dam are closed; in the transition period from the non-flood season to the flood season, the main stream reservoir is discharged first, and then the branch stream reservoir is discharged; in the flood season, when the main stream reservoir needs to store floodwater, the main stream reservoir is filled first, and then the branch stream reservoir is filled; when the main stream reservoir needs to discharge floodwater, the main stream reservoir is discharged first, and then the branch stream reservoir is discharged; in the transition period from the flood season to the non-flood season, the main stream reservoir is filled first, and then the branch stream reservoir is filled. The gate dam is arranged at the branch stream port, and the water and sediment regulation and control capacity of the reservoir is enhanced by jointly using the branch stream reservoir capacity and the main stream reservoir capacity.

The invention relates to the technical field of water pollution detection, in particular to a water quality detection device and method for an estuary catchment district, the water quality detection device for the estuary catchment district comprises a sampling bottle, a plurality of pistons, a spring plug and a trigger assembly, the upper end and the lower end of the sampling bottle are communicated, and a plurality of sampling cavities are formed in the circumferential direction at equal intervals; the plurality of pistons are in one-to-one correspondence with the plurality of sampling cavities, the upper ends of the pistons are elastically connected into the sampling cavities, the plurality of spring plugs are in one-to-one correspondence with the plurality of sampling cavities, and the spring plugs can move along the radial direction of the sampling bottle. According to the invention, the trigger assembly is arranged, in the process of controlling the sampling bottle to sink through the trigger assembly, one piston moves upwards every time the sampling bottle reaches one target water layer, so that a water sample is sucked into the sampling cavity, continuous automatic sampling of multiple target water layers is realized, the operation steps are simple, and the use is convenient and fast.

The invention provides a coupling flow and river network topology water system connectivity and obstruction recovery evaluation method. The method comprises the steps that river reach information of a target river water system is acquired; performing Strahler river network grading on each branch converged into the main stream of the target river system based on the river reach information, and determining a Strahler river network grading result of each river reach; according to the Strahler river network grading result, the length of each river reach in each branch and the average flow information of each branch at the river mouth where the branch merges into the main stream, flow weighted correction is carried out on the original river reach length based on the river reach normalized length; searching and acquiring connection path information between different river reaches in the target river system; calculating a tree-shaped water system connectivity index of the target river water system by using the river reach normalization length, the connection path information between different river reaches and the obstruction condition; and based on the restoration priority index, determining a suggested restoration sequence of each barrier in the target river system through iterative evaluation.