30 results about "Main river" patented technology

The invention discloses a river water level inversion method taking altimeter footprint heterogeneity into consideration. The method comprises the following steps: acquiring an observation waveform of an SAR altimeter; space geometric parameters are calculated through footprint gridding and observation geometric modeling; constructing a water distribution scene based on the water mask and the river network, and classifying the water into a main river channel, a flood area and an adjacent isolated water body; electromagnetic scattering numerical integration is carried out based on the differentiated surface roughness parameters, and a simulated echo waveform is generated; waveform retracking and parameter inversion are realized through coarse grid search and local optimization solution; calculating an absolute water level and carrying out geophysical correction; performing multi-index quality control based on the interpretation rate of the analog waveform and the residual whitening degree; and finally outputting a water level product. According to the method, the defects of insufficient inversion precision and robustness of an existing method in a complex earth surface mixed scene are overcome, and the accuracy, reliability and physical interpretability of inland river water level monitoring are remarkably improved.

The invention provides a high-fidelity generalization method and system for plain river network water flow simulation, and relates to the technical field of model simulation. The method comprises the steps that a node river network is constructed, constructing a physical river network topological structure comprising a main river channel node, a river reach, a regulation and storage node and a virtual river reach; a dynamic parameter configuration step: configuring hydraulic parameters for the section in the physical river network topological structure; a boundary coupling step: distributing water catchment unit runoff obtained by calculation of the hydrological model to corresponding regulation and storage nodes as boundary input conditions; and a simulation execution step: performing hydrodynamic simulation calculation based on the constructed physical river network topological structure, the configured hydraulic parameters and the distributed boundary input conditions. Through a high-low water level dynamic parameter method, a hydrodynamic model parameter calibration method is optimized, especially for rivers with large water level fluctuation amplitude, and the accuracy of simulation results is ensured.

The present application relates to river filtering technical field, especially a kind of rotating filter screen with electric control translation mechanism, including the top beam of being installed in the upper end opening of river and the bottom limit frame of being fixed in river bottom, top beam lower end is fixedly equipped with the upper translation guide rail.The rotating filter screen with electric control translation mechanism of the present application can be switched according to the scene needs by adopting double-section structure design, so that its applicable scene greatly improves;By using electric control translation and overturning adjustment mode, the angle and position of rotating filter screen can be controlled, and the operation is more convenient;By using the design of top beam and bottom limit frame, the impact resistance of the entire rotating filter screen can be enhanced, and the structure is more stable;Rotating filter screen can be quickly attached on both sides of river by splitting, not only can switch filtering mode, but also can change the barrier inside main river, facilitate internal ecology, improve different application scenarios.

The application discloses a surveying-based binary structure small watershed division method and system, and particularly relates to the field of watershed division. Basic data processing of the application includes collecting and preprocessing topography, remote sensing and other data, establishing a basic database, converting vector contour line data into DEM and filling in depressions, generating a non-depression DEM, determining water flow direction by using a D8 algorithm, calculating cumulative flow, and generating a river network. The river channel is converted into a vector runoff network, the sub-watershed range is extracted and mapped, the outcrop point of underground river or karst spring is taken as a corrosion reference, the watershed outlet is determined in combination with the main river channel of a large river, and a complete correlation system is constructed. Finally, the development of the underground water system pipeline is determined through hydrogeological investigation, geophysical prospecting, drilling and pumping test, the results of comprehensive investigation, geophysical prospecting, drilling and pumping test are comprehensively considered to accurately correct the boundary of the underground water system, and the underground water system distribution map conforming to the actual conditions is formed in combination with remote sensing images and administrative division maps.

The invention discloses a binary structure small watershed division method and system based on surveying and mapping, and particularly relates to the field of watershed division. Basic data processing comprises the steps of collecting and preprocessing data such as terrain and remote sensing, establishing a basic database, converting vector contour line data into DEM and filling depression, generating a non-depression DEM, and then determining the water flow direction by adopting a D8 algorithm; calculating accumulated flow to generate a river network; converting a river channel into a vector runoff network, extracting a sub-basin range and drawing, determining a basin outlet by taking an underground river dew point or a karst spring as a dissolution reference and combining a main river channel of a large river, and constructing a complete association system; and finally, through hydrogeological survey, geophysical prospecting, drilling and water pumping tests, underground water system pipeline development conditions are determined, comprehensive survey, geophysical prospecting, drilling and water pumping test results are obtained, an underground water drainage basin boundary is accurately corrected, and an underground water drainage basin distribution diagram meeting actual conditions is formed by combining remote sensing images and an administrative map.

The invention discloses a water pollution big data monitoring and early warning method and system, and relates to the technical field of water pollution monitoring, and the method comprises the steps: transversely arranging a plurality of flow velocity measurement points on a main river and branch flow convergence section, obtaining the flow velocity data of each flow velocity measurement point, and constructing a transverse flow velocity profile according to the flow velocity data; determining a shearing area according to the flow velocity difference value and the flow velocity change rate between the adjacent flow velocity measuring points, and determining the central position of a mixing zone; controlling a water quality sampling probe mounted on a transverse guide structure to transversely move along the section according to the central position of the mixing zone, so that the water quality sampling probe is positioned at the central position of the mixing zone; and acquiring real-time water level data, and calculating the target sampling depth according to the real-time water level data. A transverse flow velocity profile is constructed on a main river and branch flow convergence section, and the central positions of a shearing area and a mixing zone are determined based on a flow velocity difference value and a flow velocity change rate, so that a water quality sampling probe can be dynamically positioned in a key area of a hydrodynamic structure.

The present application relates to ship lock filling and draining technology field, concretely is the water-proof structure of draining, ship lock draining system and its double-line ship lock draining mode, wherein the water-proof structure of draining, the structure includes: the water-proof wall of built ship lock side and the water-proof wall of extension ship lock side, the water-proof wall of built ship lock side and the water-proof wall of extension ship lock side are parallelly arranged and the height is same, the space is left between two walls, forms the draining channel, the draining channel is connected with the extension ship lock draining corridor, makes the half water body in the lock chamber pass through the extension ship lock draining corridor and enters the draining channel, and is discharged into the main river; the ship lock draining system and double-line ship lock draining mode of application water-proof structure of draining, the construction of this technology does not need to cross the built ship lock approach channel, does not affect the operation of ship lock, and does not need to set up the underground box culvert, and the construction is simple.

The present application relates to the technical field of hydrological simulation, and more particularly to a rainfall-runoff-concentration-evolution whole-process dynamic simulation system and method. The method comprises the following steps: obtaining basin topographic information and extracting basin boundaries; dividing grid cells according to the basin boundaries and setting river nodes using the grid cells; collecting rainfall data using a rain measurement radar; calculating runoff using the rainfall data; inputting the runoff into a pre-trained distributed concentration model for concentration analysis and recording the concentration flow; inputting the concentration flow and the river nodes into a river flood evolution model to perform river evolution simulation and generate river concentration data; determining the amount of water entering the main river according to the river concentration data; generating a flow time series according to the amount of water entering the main river; and predicting the flood peak flow based on the flow time series. The present application realizes accurate simulation of the hydrological process of a basin based on hydrological simulation technology, and improves the accuracy and timeliness of flood prediction and early warning.

The invention relates to the technical field of water conservancy projects, in particular to a river pattern discrimination method based on river plane geometric morphology indexes. The method comprises the steps of crude extraction of a river water body, calculation of a river plane geometric index, identification of a main flow path of a river, and judgment and output of a river type. The traditional plane form index is popularized and applied to river pattern discrimination. The invention provides a river pattern discrimination method based on a river plane geometric morphology index, which solves or at least alleviates the problems of low efficiency and the like caused by insufficient discrimination ability, non-uniform definition and strong dependence on manual interpretation of the existing single index, improves the precision and automation level of complex river pattern discrimination, and reduces subjective errors and cost.

The application discloses a kind of dilute debris flow and rainwater collaborative drainage channel and application thereof, import section, steep slope energy dissipation section and outlet section are all full-lining trapezoidal cross-section channel;The bottom width of inlet horn mouth gradually narrows along the flow direction of debris flow, the sidewall depth gradually increases along the flow direction of debris flow;Steep slope energy dissipation section is connected after import standard trapezoidal section, the bottom width is consistent with the bottom width of import standard trapezoidal section;The bottom of steep slope energy dissipation section is arranged energy dissipation ladder along the flow direction;Outlet section is divided into outlet standard trapezoidal section and outlet horn mouth arranged after, the bottom width of outlet horn mouth gradually narrows along the flow direction, the sidewall depth gradually decreases along the flow direction;The bottom width of wide end of inlet horn mouth, the bottom width of outlet standard trapezoidal section and the bottom width of steep slope energy dissipation section are consistent;Outlet horn mouth end meets main river channel with acute angle;Main river bed is provided with riprap bottom protection and the end of outlet horn mouth is connected.

The invention discloses a multi-channel and multi-reach Manning coefficient collaborative calibration method for a hydrodynamic model based on an orthogonal test, and the method comprises the steps: field investigation and survey, data collection and data quality analysis, construction of the hydrodynamic model, setting of boundary conditions and initial conditions, and division of test factors, namely different reach of a main channel. Test level-main channel and beach land Manning coefficient evaluation, multi-factor multi-level orthogonal table construction, successive combination test river water level simulation, NSE calculation, orthogonal table statistical analysis, and parameter robustness and reliability verification. According to the method, the problems of blindness, randomness and low efficiency of parameter adjustment of a traditional method and over-fitting, slow convergence and the like of an intelligent algorithm are avoided, the collaboration, high efficiency, accuracy, reliability and robustness of model parameter calibration are improved, a foundation is laid for effective simulation of the model in regional flood control and drainage scheduling, and the method is suitable for popularization and application. Meanwhile, support is provided for scientific decision-making of regional flood control and drainage scheduling, and remarkable economic benefits and social benefits are achieved.

The invention relates to the technical field of water environment treatment, in particular to a riverway water pollution treatment method which comprises the following steps: arranging a diversion device in a suitable section of a main riverway, and introducing part of polluted river water into parallel ecological treatment branch canals; the drainage water sequentially flows through a precipitation siltation promotion area, a multi-stage compound ecological reaction area and a deep purification area in the branch canal to be subjected to stepped purification, wherein the multi-stage compound ecological reaction area is formed by connecting at least two stages of stepped units with built-in biological stuffing and aquatic plants in series; finally, the purified water flows back to the main river channel, and the diversion flow and the aeration intensity are adjusted according to water quality data feedback. According to the invention, low-disturbance, high-efficiency and ecological treatment of polluted river water is realized through technical integration of diversion burden reduction, multi-stage cooperation, ecological enhancement and intelligent regulation and control, and the system has the advantages of good treatment effect, low operation cost, strong ecological landscape compatibility and adaptability to different pollution loads.

This invention relates to the field of dynamic simulation of river flow modulus, and discloses a method for dynamic simulation of flow modulus in mountainous rivers. First, it acquires data on hydrological and meteorological elements, topographic river networks, soil properties, land cover, and glacier characteristics. Based on this data, it divides the river into sub-basins and contour zones, constructs a watershed hydrological model, and calculates the flow of each sub-basin along the main river channel. Based on satellite remote sensing data and the distribution location of the sub-basins along the main river channel, it calculates the average gradient of the sub-basins. Based on the flow and average gradient of each sub-basin along the main river channel, it calculates the flow modulus of all sub-basins along the river channel in the hydrological model under different seasons using the flow modulus calculation formula. This invention solves the problem in existing technologies where it is impossible to conduct on-site measurements of flow and gradient in mountainous rivers, thus making it impossible to draw dynamic flow modulus data for mountainous rivers.

The invention provides a river data processing method, device, equipment and product in a virtual scene, and belongs to the technical field of computers. Acquiring a trunk river and a branch river in the virtual scene, and determining initial heights of a plurality of trunk nodes in the trunk river and a plurality of branch nodes in the branch river; determining a first flow direction of the main river according to an initial height of a preset node in the main river, and adjusting the initial height of each main node according to the first flow direction to determine first height information of the main river; determining a second flow direction of the branch river according to the association relationship between the branch river and the main river and / or between the branch river and the ocean area, and adjusting the initial height of each branch node according to the second flow direction to determine second height information of the branch river; and generating target river data according to the first flow direction and the first height information of the main river and the second flow direction and the second height information of the branch river. According to the invention, reasonable and realistic river data can be generated.

The invention discloses a river channel prediction method and system based on structure tensor attributes and deposition distribution rule constraints, and relates to the technical field of oil-gas exploration and development reservoir prediction. Comprising the steps of establishing a three-dimensional earthquake work area; performing quality analysis on the seismic data, and determining a seismic frequency band range; obtaining a logging curve with high sensitivity to sand shale; a well-seismic relation is established through the seismic frequency band range and the high-sensitivity logging curve; performing waveform indication inversion on the well logging curve with high sensitivity to obtain a high-resolution inversion body; structure tensor attributes are extracted based on seismic data, and river channel distribution features are preliminarily obtained; obtaining a main sand body distribution range by utilizing the existing sedimentary facies diagram; carrying out sedimentary distribution rule constraint by integrating the river channel distribution characteristics and the main sand body distribution range so as to establish a sedimentary facies, and carrying out sedimentary distribution rule constraint inversion based on a high-resolution inversion body so as to obtain a high-precision main river channel sand body distribution condition; according to the invention, the precision and accuracy of river channel prediction are greatly improved.

The invention relates to the technical field of distributed hydrological models, and discloses a hydrological model calibration method, system and device for an underground water shallow buried arid irrigation district and a medium, and the method comprises the steps: obtaining data needed by the hydrological model of the irrigation district; the drainage ditch runoff is divided into surface runoff and base flow by adopting a water chemical end member mixing method, an improved distributed agricultural hydrological model taking the base flow as a calibration target is constructed, and drainage basin outlet total weighted base flow is used for replacing traditional main river runoff output; sub-basins are divided, and water-salt migration simulation is carried out; respectively carrying out parameter sensitivity analysis on channel leakage and evapotranspiration, manually calibrating an annual scale target, and carrying out parameter sensitivity analysis and monthly scale automatic calibration on a base flow by utilizing a hydrological calibration program; and performing iterative calibration until the calibration meets a preset standard. According to the method, efficient, objective and accurate calibration of the hydrological process of an irrigation area with strong man-made interference under different time scales and multiple targets can be realized.

The utility model discloses a new dam apron in the technical field of water conservancy, including dam body, the water flow below of dam body is provided with apron main slope body, the both sides of apron main slope body are provided with the side waterfalls of a plurality of layers of layerwise under superimposed, the middle part of apron main slope body is provided with the intermediate waterfalls of a plurality of layers of layerwise downward superimposed, is provided with the buffer slope between intermediate waterfalls and below main river course, the left and right sides of apron main slope body all are provided with landscape footpath, the fishway is repaired between apron main slope body and one side bank, and the fishway communicates the water flow of dam body upstream and apron main slope body downstream. The utility model discloses form transverse turbulence through side dragon scale shape waterfalls, and the impact force of dispersion side wing water flow is protected bank base, and the central wave shape waterfalls longitudinal ladder type broken main stream, and cooperate end buffer slope energy dissipation. Special fishway connects dam body upstream and downstream, and guarantees fish migration channel, and restores aquatic ecological chain.

The application discloses an ecological protection structure of an original main river channel of an artificial canal, which comprises an original main river channel bend, a branch stream and a canal. The branch stream flows into the original main river channel bend to divide the original main river channel bend into an upstream river section and a downstream river section. The canal has two intersection openings with the original main river channel bend. From upstream to downstream, the two intersection openings are an upstream intersection opening and a downstream intersection opening. A stilling basin is arranged in the downstream river section. A sand guide ridge is arranged near the downstream river section corresponding to the branch stream, so as to guide the silt and part of the water body of the branch stream to the upstream river section. A dike is arranged at the upstream intersection opening. A plurality of water passing grooves are formed in the top end of the dike. The water passing grooves are arranged at intervals. The groove bottom height of the water passing grooves is higher than the water level of the canal in the dry season and lower than the flood level of the canal in the flood season. The ecological protection structure can keep the water body of the upstream river section flowing all the year round and keep the biodiversity of the upstream river section.

The utility model discloses a riverway ecological greening landscape structure which comprises a main riverway, a secondary riverway is arranged on the outward side of the main riverway, a first greening landscape is arranged between the secondary riverway and the main riverway, a stepped second greening landscape and a stepped third greening landscape are arranged on the outward side of the secondary riverway, and a flood drainage channel is arranged on the outward side of the third greening landscape. An overhead footpath is erected above the drainage channel, a landscape footpath is arranged on the outward side of the drainage channel, and a fourth stepped greening landscape and a fifth stepped greening landscape are arranged on the outward side of the landscape footpath. The secondary riverways communicated with each other are arranged on the outward side of the main riverway, so that the main riverway can be assisted in flood drainage and waterlogging prevention in a flood season; a flood drainage channel is outwards arranged on the secondary river channel, an overhead footpath is erected above the secondary river channel, the flood drainage channel can play a role in flood drainage, and meanwhile the overhead footpath can be used for people to walk and enjoy; a landscape footpath is arranged on the outward side of the flood drainage channel and can be used for people to move; the flood-preventing and waterlogging-preventing greenhouse has good flood-preventing and waterlogging-preventing functions, and is reasonable in structure, good in greening landscape and suitable for popularization.

The invention discloses a water conservancy project drainage device and a drainage method thereof, and belongs to the technical field of water conservancy projects. A water conservancy project drainage device comprises a main river channel and further comprises a flow dividing channel arranged on the side edge of the main river channel, and a flow dividing opening communicated with the flow dividing channel is formed in the main river channel; the gate mechanism is arranged on the main river channel, and the gate mechanism is arranged on the upper side of the diversion port; the material receiving part is arranged at the end, close to the main river channel, of the flow dividing channel, and the material receiving part comprises a material receiving seat and a material blocking seat connected with the material receiving seat; wherein a lifting assembly connected with the material receiving part is arranged at the shunting channel, and the lifting assembly is connected with the gate mechanism; according to the device, sundries entering the diversion channel during drainage irrigation can be automatically collected and cleaned, the workload and the working intensity of subsequent workers are reduced, the diversion channel is prevented from being blocked, and the drainage effect and the flow stability of the subsequent diversion channel are guaranteed.

The application provides an active variable flow adjusting system for river regulation, which comprises a central column, a flow adjusting vane system and a flow adjusting vane lifting and rotating system. The flow adjusting vanes on the flow adjusting vane system rotate along the longitudinal symmetry axis of the central column with a changeable angle and change the position height along the height direction of the central column. The water and sediment conditions under various water flow conditions of the river are satisfied by changing the angle and height of the adjusting vanes. The water flow and sediment are disturbed by the new internal boundary condition formed by the flow adjusting system by using the power of the water flow, so that the river reconstruction process is caused, the river regime is adjusted, and the riverbed evolution trend is changed. The application causes the river reconstruction process by using the new boundary condition, the river regime is adjusted, the riverbed evolution trend is changed, the river flow state is improved, the sediment is smoothly transported, the main river channel with stable shape and size is formed, and the comprehensive treatment effect is fundamentally achieved.

The application provides a catchment sediment estimation method, which comprises the following steps: collecting various types of basic data of a target catchment, arranging the basic data into a grid form and performing unified spatial registration, dividing the various types of basic data based on the small catchment boundary as the spatial unit of sediment estimation; for each small catchment, calculating the gravity erosion, debris flow erosion, gully erosion and slope erosion respectively to obtain the time and space distribution of various types of erosion and total erosion in the target catchment; for the above four types of erosion, calculating the sediment yield and deposition of the small catchment scale respectively; based on the calculated sediment yield, calculating the suspended sediment transport capacity of the small catchment in the main river system according to the upstream and downstream relationship of the small catchment in the target catchment, and combining the dredging, reservoir sedimentation and the input and output of the suspended sediment in the river section to obtain the distribution of the suspended sediment transport capacity along the flow direction of the main river system. The application can comprehensively quantify the time and space distribution of the sediment in the erosion of the catchment, the sediment yield of the catchment and the sediment transport of the river.

The invention belongs to the technical field of oil and gas field exploration and development, and provides a braided river delta front sedimentary microfacies determination method and related device.The method comprises the steps that the total stratum thickness of all layers of a target stratum is obtained, and the single sand body sandstone thickness in each layer of the target stratum is obtained; calculating sedimentary microfacies discrimination coefficients according to the total thickness of the stratum and the thickness of each single sand body sandstone, performing normalization processing on the sedimentary microfacies discrimination coefficients, and making classification intervals of the sedimentary microfacies discrimination coefficients corresponding to the microfacies; and drawing a normalized sedimentary microfacies discrimination coefficient graph according to the classification interval of the sedimentary microfacies discrimination coefficient corresponding to each microfacies, and making a sedimentary microfacies graph in combination with the logging facies. According to the method, the problem of misrecognition of a main river channel or a sand dam caused by accumulation of multiple layers of thin sand is solved, the operation difficulty is relatively low, the working efficiency is improved, quantitative recognition of the sedimentary microfacies is achieved, a basis is provided for future planning, deployment and potential tapping adjustment of an oil field, and a foundation is laid for economic and effective development of the oil field.

The invention relates to the technical field of water conservancy projects, and aims to solve the problems that in the prior art, a sandy river treatment facility is single in function and low in sand and stone grading and separating efficiency, a water body lacks the forced purification capacity, ecological protection is lacked, sediment is deposited, a river channel is lifted, the reservoir capacity is lost, and the ecology is prone to being damaged. The invention provides a dam body water conservancy system with sand, stone and float discharging and lake water stopping functions. The dam body water conservancy system comprises a diversion river sand discharging section, a main river stone discharging and diversion section, a floating object collecting device and a water storage and purification ecological lake, wherein the diversion river sand discharging section is used for discharging floating objects, separating sand and stone, purifying water and constructing an ecological habitat; the diversion river desilting section, the Z-shaped diversion desilting and stone removing channel and the water storage and purification ecological lake are sequentially communicated, a plurality of groups of balance scale type water-stopping buoyancy tanks and chain suspension water-stopping tanks are arranged in the lake, and an outlet of the lake is communicated with a main river. The device has the beneficial effects that sand and stones are accurately and efficiently separated to reduce silt, water quality is forcibly purified, the ecology of aquatic organisms is protected, and the device can flexibly adapt to multi-dimensional cooperative treatment of hydrological working conditions.

The application belongs to the technical field of irrigation and relates to a Populus euphratica forest area division and rotation irrigation method, comprising the following steps: division into a first flooding irrigation area, a second flooding irrigation area and a third flooding irrigation area; comparison of the water inflow frequency value with a preset water inflow frequency interval; determination of the number of flooding irrigation times and the number of flooding irrigation days in the current year; and drainage irrigation. The application can dynamically select different flooding irrigation areas for irrigation according to the water inflow frequency value corresponding to the real-time flow of the main river channel, so that the first flooding irrigation area, the second flooding irrigation area and the far river area can obtain irrigation opportunities under different water inflow conditions, the far river area can be prevented from continuously degrading due to insufficient water distribution, the ecological water resources can be evenly distributed among different areas away from the river channel, the number of irrigation times and the number of irrigation days of each flooding irrigation area can be accurately determined in combination with the underground water depth data, and the overall restoration scale and ecological restoration effect of the Populus euphratica forest are improved.

The application discloses a method, device, equipment, medium and product for determining a development position of a main river channel in a delta. The method comprises the following steps: acquiring seismic data, wherein the seismic data comprises plane positions of each stratum and thicknesses of each stratum; determining a curvature function according to the plane positions of each stratum and the thicknesses of each stratum, wherein the curvature function is used for representing the relationship between the plane positions of each stratum, the thicknesses of each stratum and curvature values of each stratum; determining the curvature values of each stratum according to the plane positions of each stratum, the thicknesses of each stratum and the curvature function; and determining the plane positions of the stratum with a curvature value less than a first value as the development position of the main river channel in the delta. Through the technical scheme, the development position of the main river channel in the delta can be accurately and efficiently determined, thereby providing technical support for the description of the main river channel sand body, the exploration and development of oil and gas and the deployment of drilling.

The invention provides a drainage basin division method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: generating a preliminary drainage basin division layer which comprises a river line graph, a river sequence, a drainage basin total exit and a preset site based on a digital elevation model of a target drainage basin and the position of the preset site; generating a complete downstream water flow path of the preset station according to the river sequence, detecting a coincident path, and taking a starting point of the coincident path as an intersection point; the coincident paths are combined, and non-coincident paths are fused to generate a main river network vector graph layer; taking a preset site and the intersection as target points, and breaking the main river network line to generate a river reach; according to the starting target point, the ending target point, the actual space length and the river sequence of each river reach, the upstream and downstream relation between the target points and the actual space length are determined; and performing drainage basin division to obtain a sub-drainage basin vector division map layer containing the upstream and downstream relationship between the target points and the actual space length. Through the method, the working efficiency is improved.

The application discloses a kind of river network area flood control and purification's agricultural non-point source pollution closed system and its regulation and control method, the system includes main river, regional internal purification system and intelligent control system.Automatic monitoring station in main river monitors the water quality of monitoring section, and data is transmitted to intelligent control system, and intelligent control system connects regional internal purification system and controls the opening of regional internal purification system according to detection result.The application can monitor river water quality and regulate river water volume, utilize ecological pit pond to purify agricultural non-point source pollution and stabilize river water level, promote the healthy development of river ecosystem, utilize intelligent control system, scientific, accurate, timely, optimize the scheduling regional internal purification system, and ensure that river water quality monitoring section is stable and up to standard.It has the advantages of long-term management benefit, easy operation, high regulation and control efficiency, stable performance and the like.

The invention provides a polder area integrated intelligent canal head system and a drought and flood water ecological cooperative regulation and control method, and the system comprises an integrated canal head main body unit which is provided with a main river channel main water gate in the middle, and is provided with a flood drainage pump station and a water diversion pump station at two sides; the wet chamber management room is internally provided with water inlet and outlet runners and impellers of the drainage pump station and the diversion pump station, and is provided with electromechanical equipment and a local intelligent management and control terminal; the sensing control unit comprises a water level, flow and water quality detection monitor and a sensing control module; and the intelligent management and control unit is connected with the channel head node and the monitoring and sensing network through a communication network to realize data summarization, global decision and instruction distribution. Through a highly integrated technical scheme and an intelligent collaborative decision-making system, the problems that the construction cost of a large-pattern polder-irrigation integrated area is high, operation management and protection are difficult, and flood control and drainage-irrigation water supply-water ecology are integrated are solved, and technical support is provided for polder area modernization transformation.

This invention discloses a numerical simulation method for the disaster chain of debris flow blocking a river – landslide dam failure flood evolution, including: obtaining the data required for the numerical simulation method based on a continuous medium fluid dynamics model coupling water, coarse particles, and fine particles. This application combines continuous medium mechanics theory, couples water, coarse particles, and fine particles into a continuous medium fluid dynamics model, and uses the finite difference method to achieve numerical simulation of the disaster chain of debris flow blocking a river – landslide dam failure flood evolution. This application considers the sediment transport effect of the main river flow when the debris flow flows into the main river and the influence of the main river channel sediment transport process on the landslide dam failure process and the evolution of the failure flood. It can simultaneously simulate whether the debris flow blocks the river, how the landslide dam fails after blocking the river, and the evolution of the failure flood, achieving a complete coupling of the physical processes of the debris flow blocking a river – landslide dam failure flood evolution disaster chain.