69 results about "Canal water" patented technology

The invention discloses an irrigation water utilization coefficient evaluation method and system based on irrigation area water use whole process simulation, and relates to the technical field of agricultural water-saving irrigation. Irrigation water utilization information is obtained through multi-source data fusion; based on the irrigation water utilization information, constructing an irrigation area water utilization whole-process simulation model; the whole-process water consumption simulation model for the irrigated area comprises main canal water simulation, field canal water simulation and field crop water simulation; calculating a water delivery utilization coefficient, a water distribution utilization coefficient and a field water utilization coefficient by utilizing the irrigation area water utilization whole-process simulation model; and multiplying the obtained water delivery utilization coefficient, water distribution utilization coefficient and field water utilization coefficient to obtain an irrigation water utilization coefficient. The irrigation water utilization coefficient is accurately measured and calculated, the water utilization efficiency of crops is accurately evaluated, and fine management of water utilization in an irrigation area and water-saving benefit evaluation can be achieved.

The invention discloses an arid and semi-arid region well and canal double-irrigation rotation irrigation wind-solar complementary intelligent water-saving salt-control irrigation device and method. The device comprises a sensor monitoring module used for acquiring environment data and water level information of well water and canal water in real time; the energy supply module comprises a solar assembly and a wind power generation assembly, the solar assembly is used for converting solar energy into electric energy, the wind power generation assembly is used for converting wind energy into electric energy, and the energy supply control module is connected with the sensor monitoring module and the energy supply module. The calculation module is used for calculating irrigation water quantity according to the environment data and the water level information; and the irrigation module is connected with the control module and is used for controlling the output water quantity according to the calculated irrigation water quantity. Water resource shortage in arid and semi-arid areas can be relieved, and water resource waste in the irrigation process is avoided.

The device comprises a cross beam horizontally and fixedly arranged above a rectangular channel section of an aqueduct in the left-right direction, and the portions, on the left side and the right side of a flow guide pier, below the cross beam are each provided with a grating type eddy current damping wave absorbing assembly. A water surface fluctuation monitoring sensor is arranged in front of the cross beam in the aqueduct, a fluctuation signal processor and a PLC are arranged on the cross beam, and the signal output end of the water surface fluctuation monitoring sensor is connected with the signal input end of the PLC through the fluctuation signal processor. The signal output end of the PLC is connected with the signal input end of the grating type eddy current damping wave absorbing assembly. The aqueduct has the following advantages that vertical oscillation of water in the aqueduct is effectively restrained, the vertical amplitude of water surface waves is reduced, and oscillation waves are prevented from splashing out of the aqueduct, so that the effective water cross section of the aqueduct is increased, the flow capacity of the aqueduct is improved, and the aqueduct is safe, low in energy consumption, low in cost and easy to implement.

A gate linkage control method and device and a series water supply and power generation system are provided. The method comprises the following steps of: acquiring a water demand and current water level information of the series water supply and power generation system, the current water level information at least comprising current riverway water level information and current water diversion trunk canal water level information; determining a gate opening degree control strategy of a first water diversion gate and a second water diversion gate according to the water demand and the current water level information of the series water supply and power generation system; and carrying out linkage control on the first water diversion gate and the second water diversion gate according to the gate opening degree control strategy.

According to the coastal saline-alkali soil water storage system device and the application thereof, on the basis of the characteristics that water and salt in coastal saline-alkali soil are actively transported, and the salinity change amplitude in an irrigation canal is large, ground surface reservoirs of different sizes are laid between field parcels, and the water flow direction of the reservoirs is judged through real-time conductivity data of pond water, canal water and irrigation water; the salt gradient controllable water storage system is formed and controlled according to salt tolerance threshold values of nearby crops, so that the irrigation and salt leaching requirements of different crops in different seasons are met. The water storage device can input the capacities of different reservoirs, crop salt tolerance thresholds, irrigation water demand and the like, estimates the field covered by the water storage device, and optimizes the cultivation mode planning. The device can accumulate irrigation water in different salinity ranges under the condition that the salinity of a surface water body changes drastically, can fully utilize different water sources such as surface water and rainwater, and is very suitable for coastal salinization farmland with relatively rich water resources.

The invention relates to the technical field of water quality detection, and discloses a method and system for detecting the concentration of suspended solids in a canal water sample, and the method comprises the following steps: obtaining environmental parameters of a canal water body in real time, and synchronously collecting a light scattering intensity signal and an acoustic echo attenuation signal of the canal water body through a near-infrared optical sensor and an acoustic Doppler flow velocity profiler; calculating an initial suspended matter concentration value based on the light scattering intensity signal and the acoustic echo attenuation signal; correcting the initial suspended matter concentration value through a dynamic compensation algorithm according to the environmental parameters of the canal water body, and generating concentration data before calibration; inputting the concentration data before calibration into a pre-trained machine learning model, and outputting a final suspended matter concentration value; wherein the pre-trained machine learning model comprises a random forest regression model and a gradient boosting decision tree model. According to the scheme, the detection accuracy under the complex hydrological condition and the real-time response capability of the model under the disturbance scene can be improved.

The invention discloses a water conveyance canal lining plate anti-floating stability online intelligent diagnosis and automatic early warning device and method. The device comprises a high-sensitivity water pressure sensor, an automatic water level gauge, a canal section geologic structure parameter acquisition module, a monitoring and diagnosis early warning controller and a remote monitoring terminal. The high-sensitivity water pressure sensor is arranged below the water surface of a first-stage riding track monitoring well of the water conveyance canal, the automatic water level gauge is arranged in inner side canal water, the monitoring and diagnosis early warning controller is in communication connection with the high-sensitivity water pressure sensor and the automatic water level gauge, and the remote monitoring terminal is in communication connection with the monitoring and diagnosis early warning controller. According to the method, the underground water level of the first-level riding track, the water level of the channel and the geological structure parameters of the channel section are collected in real time, an analytic formula method based on Dupuff assumption is innovatively provided for calculating the characteristic water depth of the underground water infiltration line of the channel slope, and the preset critical pressure difference judgment standard is combined; on-line monitoring, intelligent diagnosis and automatic early warning of the anti-floating stable state of the lining plate of the water delivery canal and the replacement fill stratum can be achieved.

The invention is a flow-through flow-through filter that can separate raw water and / or sewage to filtered stream, fine particle stream and grit stream in one hydraulic device. For raw lake and / or canal water intake application, the flow-through filter is placed inside a chamber box that is mounted on a water intake rack structure or diversion canal. The invention filters debris and organisms to prevent biomes formation in pumps and waterlines that delivers raw water to a water treatment plant. The flow-through filter withdraws flows from a raw water body without taking defined sediment, floating debris and target aquatic biomes and eliminates the need of discharging remnants to a sewage system.For wastewater treatment, the flow-through filter is installed over a wet well after the headwork rack and may replace the grit removal, primary clarifier, and the fine screening. The flow-through filter requires a much smaller footprint of the area and / or enclosed building that requires smaller odor control. There is a substantial cost saving of using one device and replaces grit removal, primary basin, and fine screening.

The invention discloses a hydrodynamic simulation method for an open channel water transfer system under a rainstorm scene, which comprises the following steps of: S1, regarding rainfall into a channel of the open channel water transfer system as a special drainage basin confluence production process, simulating sudden rainstorm in a uniform distribution side inflow manner, and autonomously fitting a lockage flow relationship of a check gate according to actually measured data; s2, performing automatic calibration of a convergence range correction coefficient by adopting an optimization algorithm to obtain an optimal convergence range correction coefficient; and S3, introducing an automatically calibrated optimal confluence range correction coefficient, updating a unit width side inflow formula, and generating a hydrodynamic simulation result coupled with the rainstorm process in combination with the one-dimensional hydrodynamic simulation model. The method has the advantages that the analogue simulation precision of a hydrodynamic model in a rainstorm scene is improved, a reference is provided for water delivery dispatching extreme working condition rehearsal and scientific emergency dispatching plan making, and a technical support is provided for operation safety and water supply safety of an open channel water transfer project.

The invention provides an automatic drip irrigation regulation and control method and system for a well and canal combined irrigation area, and relates to the technical field of drip irrigation regulation and control, and the method comprises the steps: carrying out the timing sequence sensing of multi-source farmland environment parameters through M farmland environment sensing units of M drip irrigation land parcels, and carrying out the local drip irrigation coupling demand decision; m real-time drip irrigation strategies returned by the M farmland environment sensing units are received, drip irrigation load compatibility analysis is executed, and the M real-time drip irrigation strategies are decomposed into K groups of parallel drip irrigation strategies; backtracking well and canal operation time sequence data to perform well and canal water supply proportion analysis; and in the process of driving the proportional mixing valve and the pressure regulation and control unit in a linkage manner by adopting a water source proportional regulation and control instruction and circularly executing K groups of parallel drip irrigation strategies, executing two-dimensional closed-loop correction according to a load feedback vector. The technical problem that in the prior art, the automatic drip irrigation regulation and control efficiency of the well and canal combined irrigation area is poor can be solved, and the technical effect of improving the automatic drip irrigation regulation and control efficiency is achieved.

The utility model relates to a channel water-saving gate device based on buoyancy self-adjustment, the channel water-saving gate device based on buoyancy self-adjustment comprises a gate groove, a gate and a buoyancy linkage structure, the buoyancy linkage structure comprises a fixing rod arranged on the backwater side of the gate, the fixing rod is rotatably connected with a plurality of levers, the top of the gate is provided with a connecting handle, and the connecting handle is connected with the gate. The first connecting end, close to the gate, of the lever movably penetrates through the connecting handle and then is connected with a first limiting block, and the second connecting end, away from the gate, of the lever is connected with a first floating ball through a connecting rod so that the first floating ball can drive the gate to ascend and descend along the gate groove along with ascending and descending of the water level of the backwater side of the gate. A plurality of second floating balls are connected to the bottom of the gate, and when the gate is completely closed, the second floating balls are higher than the first floating balls, so that when the water level of the upstream side of the gate rises to the second floating balls, the gate can be opened under the action of the second floating balls to drain water. The channel water-saving gate device not only can accurately control the irrigation water level, but also has the flood discharge capacity.

The present invention relates to the field of irrigation canal water flow monitoring technology, and in particular to a method for determining irrigation canal water flow, model building, and extracting standard flow information. The method of the present invention first obtains the flow information of the irrigation canal water for a first predetermined time period; then the flow information is compared with a standard flow feature set for similarity to obtain multiple similarity vectors, and a similarity matrix is ​​constructed based on the multiple similarity vectors; then the similarity matrix is ​​subjected to dimensionality reduction processing to obtain a similarity feature matrix; finally, the similarity feature matrix is ​​input into a water flow model to determine the irrigation canal water flow. The implementation method of the present invention constructs a similarity matrix based on standard flow information, and inputs it into a measurement model after dimensionality reduction to obtain the canal water flow. Due to the use of extracting data segments and similarity feature processing, it is more accurate and reliable than the method of measuring flow with real-time data in the prior art.

The invention relates to the technical field of channel water delivery, in particular to a one-way water passing membrane which is used for being arranged between channel bed foundation soil and a lining plate and comprises a geomembrane, arrangement holes used for arranging one-way water passing components are formed in the geomembrane, and each one-way water passing component comprises a plastic base, a plastic support, a plastic cover plate and an elastic silica gel cap. The one-way water passing film can respond to the pressure difference of water inside and outside a channel to enable the elastic silica gel cap to deform so as to achieve one-way water passing control, when the hydrostatic pressure of channel bed foundation soil is higher than that in the channel, water of the channel bed foundation soil can enter the channel in a one-way mode, and therefore frost heaving damage caused by the high water content of the channel bed foundation soil is prevented; when the hydrostatic pressure in the channel is higher than that of the channel bed foundation soil, water in the channel cannot flow out of the channel through the one-way water passing component, and therefore the water conveying efficiency is guaranteed.

The invention discloses a device and a method for testing influence of river and canal flood on variable slope pipe network drainage and ground surface submerging, and relates to the field of urban flood. A water tank lifting assembly can ascend and descend, and a water tank can move relative to the water tank lifting assembly, so that the gradient of the water tank can be adjusted; the inspection well lifting assembly can ascend and descend and can move so that the gradient of the underground pipe network can be adjusted, the effluent weir comprises a weir plate which can move in the height direction of the testing device, and the weir plate is used for adjusting the water level in the river channel. Therefore, the gradient of the water tank is adjusted through the water tank lifting assembly, the gradient of the underground pipe network is adjusted through the inspection well lifting assembly, and the weir plate is used for adjusting the water level in the canal. The test device can accurately simulate the influence degree of the dynamic change of the water level of the canal on the drainage of the urban variable-gradient pipe network and the range and depth of surface submerging under the combined situation of different surface incoming flows and pipeline incoming flows, and provides decision support for urban flood risk management and urban drainage system design.

The utility model discloses a multi-stage canal water diversion device for farmland, which belongs to the field of agriculture and comprises a plurality of canal bodies, adjacent canal bodies are connected through connecting sections integrally arranged with the canal bodies, and gate components are arranged on the canal bodies close to the connecting sections. A filter mechanism capable of preventing blockage and convenient to disassemble is arranged at the position, located on the downstream of the gate assembly, of the channel body and comprises a filter screen installed on the channel body in an inserted mode and a positioning assembly arranged on the channel body and used for positioning and fixing the filter screen, and a cleaning assembly used for cleaning the surface of the filter screen is arranged on the filter screen. The cleaning assembly comprises a connecting rod penetrating through the fixing plate, the bottom of the connecting rod is provided with a brush abutting against the surface of the filter screen through a mounting frame, and the connecting rod is sleeved with a reset spring. The multi-stage canal water diversion device for the farmland can effectively filter impurities, keep the canal unblocked, improve the irrigation efficiency, reduce the maintenance cost and guarantee the long-term stable operation of an irrigation system.

The application relates to the technical field of water quality detection, and discloses a detection method and system for the concentration of suspended solids in a canal water sample, which comprises the following steps: acquiring the environmental parameters of the canal water body in real time, synchronously collecting the light scattering intensity signals and acoustic echo attenuation signals of the canal water body through a near-infrared optical sensor and an acoustic Doppler current profiler, calculating an initial suspended solid concentration value based on the light scattering intensity signals and the acoustic echo attenuation signals, correcting the initial suspended solid concentration value through a dynamic compensation algorithm according to the environmental parameters of the canal water body to generate pre-calibration concentration data, inputting the pre-calibration concentration data into a pre-trained machine learning model to output a final suspended solid concentration value, and wherein the pre-trained machine learning model comprises a random forest regression model and a gradient boosting decision tree model. The scheme can improve the detection accuracy under complex hydrological conditions and the real-time response capability of the model under a disturbance scene.

The application provides a well-canal combined scheduling method coupled with long short memory deep learning, first, a real-time hydrological forecast model is constructed, historical N-day meteorological, hydrological and different water source irrigation amounts are taken as inputs through a long short memory deep learning method to forecast runoff in a short future period, the different water source irrigation amounts include well water and canal water irrigation amounts; then, a real-time water amount scheduling model is constructed, a minimum runoff is taken as a constraint to maximize irrigation area water supply benefit to solve optimal irrigation amounts of different water sources in a short period; finally, the real-time hydrological forecast model and the real-time water amount scheduling model are iterated and simulated until balance is reached, so that optimal well water and canal water irrigation amounts are obtained. The application can realize precise irrigation of an irrigation area, fully utilize water supply capacity of a canal, exchange water supply time for water supply space, fully play water storage engineering capacity of the irrigation area and maximize reduction of drought.

The remote control clearing equipment comprises a 4G remote control switch, a control box, a machine base, a lifting part, a horizontal movement and dirt fishing part and a rotatable dirt loading and overturning dirt unloading part. The rack lifting motion component comprises a lifting screw transmission part, a lifting operation driving motor and a rack; the screen bucket frame horizontal movement component comprises a horizontal operation driving motor, a horizontal movement track, a horizontal movement chain wheel and a chain; the horizontal movement, the vertical movement and the rotating operation of the screening hopper are all controlled by a 4G remote control switch manually according to a monitoring picture; an operator carries out the operation of salvaging floating objects according to the water surface width and the water level height of canal water through a monitoring picture and on and off of each signal lamp; the technical effects are as follows: 1, manual remote control is adopted, and unmanned floating object salvage field work is realized; 2, the fishing cost is reduced; and 3, the environment protection work is effectively promoted.

The invention discloses a canal ecology monitoring method and system based on multi-source heterogeneous data and electronic equipment, and relates to the field of canal monitoring, and the method comprises the steps: obtaining multi-source heterogeneous data obtained by monitoring the water ecology of a target canal, the multi-source heterogeneous data comprises multi-class sensor monitoring data, remote sensing and unmanned aerial vehicle monitoring data and routing inspection input data; performing classification processing on the multi-source heterogeneous data to obtain a multi-dimensional monitoring data sequence based on a data transmission period; standardizing the multi-dimensional monitoring data sequence, and analyzing the change trend of the water quality and hydro meteorological indexes based on the standardized multi-dimensional monitoring data sequence; and according to the change trend analysis result, generating a canal ecology monitoring report and a water ecology emergency plan. The technical problems that the monitoring mode of a canal water ecology monitoring system in the prior art is single, and multi-dimensional changes of a water ecosystem cannot be comprehensively reflected are solved.

The utility model discloses a canal sludge treatment device, and relates to the technical field of canal water conservancy sludge treatment, a push handle is arranged at the upper part of a mounting seat, a plurality of rotating wheels are arranged at the lower part of the mounting seat, a sleeve penetrates through the mounting seat, a rotating shaft is arranged in the sleeve, and the top end of the rotating shaft is connected with a motor; and auger blades are arranged on the outer side of the rotating shaft, a discharging opening is formed in the top of the sleeve, and the discharging opening is connected with a sludge collecting tank through a discharging pipe. The whole mounting base can be conveniently moved through the push handle and the rotating wheel, the motor drives the rotating shaft to rotate, the auger blade on the outer side of the rotating shaft crushes sludge, the sludge moves upwards in the sleeve along with the auger blade, and finally the sludge is discharged from the discharging port and reaches the sludge collecting tank through the discharging pipe. Manual crushing is not needed, time and labor are saved, the working efficiency is improved, and the sludge treatment effect is better.

The utility model relates to the technical field of irrigation ditches, and discloses an irrigation ditch water flow adjusting device which comprises a main body structure and a fixing mechanism, the main body structure comprises a fixing frame, the fixing frame is fixedly connected with a fixing plate, the fixing plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a worm, the worm is meshed with a worm wheel, and the worm wheel is fixedly connected with the worm wheel. The worm gear is fixedly connected with a connecting shaft, the connecting shaft is fixedly connected with an original gear, the fixing frame is provided with a sliding groove, the sliding groove is connected with a baffle in a sliding mode, the baffle is provided with a tooth groove, and the tooth groove is meshed with the original gear. Compared with traditional manual adjustment, the automatic control mode has the advantages that the accuracy and efficiency of adjustment are greatly improved, the problem that the flow speed is too high or too slow due to improper manual operation or errors is effectively solved, and particularly, the time for stopping irrigation is difficult to accurately grasp during night irrigation, so that the irrigation efficiency is greatly improved. Water resource waste and rice seedling root rot are easily caused.

The utility model discloses a canal overwater prefabricated pipe pile foundation photovoltaic support, and relates to the technical field of photovoltaic supports, the canal overwater prefabricated pipe pile foundation photovoltaic support comprises a prefabricated pipe pile foundation, the upper surface of the prefabricated pipe pile foundation is fixedly provided with an insertion cylinder, the inner part of the insertion cylinder is inserted with an insertion rod, the upper surface of the insertion rod is fixedly connected with an oblique beam, and the oblique beam is fixedly connected with the prefabricated pipe pile foundation. Four cross beam purlins are fixedly mounted on the upper surface of the oblique beam, a photovoltaic panel is fixedly mounted on the upper surfaces of the four cross beam purlins, and a front support and a rear support are fixedly mounted on the front side and the rear side of the lower surface of the oblique beam respectively. By arranging the front support, the rear support, the front stand column, the rear stand column and the four cross beam purlines, the photovoltaic support can be conveniently installed, all the components are assembled in a screw fixed installation mode during installation, on-site welding can be reduced, the construction period can be shortened, the installation efficiency can be improved, installation is more convenient, and the installation cost is reduced. The front support, the rear support, the front stand column and the rear stand column are arranged at the bottom of the oblique beam, and deformation of the oblique beam is small.

The irrigation ditch water flow control device for intelligent irrigation comprises an irrigation ditch main body, a protruding base is arranged on the surface of the upper end of the irrigation ditch main body, a rotating main shaft is arranged on the surface of the inner side of the protruding base, and an adjusting type flashboard is fixedly connected to the outer surface of the rotating main shaft. The lower surface of the adjustable gate plate is attached to the inner side surface of the lower end of the irrigation channel body, the left side face and the right side face of the outer end of the adjustable gate plate are tightly attached to the inner side surface of the irrigation channel body, and the outer side surface of the irrigation channel body is fixedly connected with a supporting seat. The supporting seats are distributed and fixed to the outer surfaces of the left end and the right end of the irrigation channel body, worms are arranged on the surfaces of the inner sides of the supporting seats, a turnable adjustable flashboard structure is adopted, the turning angle of the adjustable flashboard, the opening space angle and the water flow rate can be adjusted through an external manual-automatic integrated driving assembly, and the operation is convenient. Adjustment is flexible and convenient, and the adjustable flashboard is simple in structure and low in cost.

The utility model relates to the technical field of irrigation canals, in particular to an irrigation canal water-saving collecting structure which comprises a water accumulation tank, an irrigation canal is fixedly connected to the front face of the water accumulation tank, a collecting assembly is arranged above the irrigation canal, a water-saving assembly is arranged on one side of the water accumulation tank, and the collecting assembly comprises a sliding groove. The sliding groove is formed in the upper portion of the irrigation channel. According to the water-saving collecting structure for the irrigation canal, by installing the collecting assembly, the moving plate can slide in a sliding groove through cooperation of the sliding groove, the moving plate and other components, and therefore a collecting frame body on the lower portion can block weeds floating on the water surface; then, a planter can move the moving plate with the collecting frame body to a proper position by utilizing the moving handle, and then the weeds are brought into the collecting frame body by water flow and penetrate through the permeable net, so that the weeds are gathered in the collecting frame body, the planter can conveniently clean the weeds, and the convenience is improved.

The invention discloses an irrigation area water volume scheduling optimization method based on an index triangular optimization algorithm, and relates to the field of water conservancy informatization. By constructing an optimization model with the branch channel water supply amount as a decision variable and combining an index triangular optimization algorithm, efficient distribution and refined regulation and control of the water amount of the irrigation area are achieved. The water demand of each irrigation piece, a branch channel and different crops in each irrigation period in an irrigation area is integrated, constraint conditions such as the maximum water supply amount of a water source, the water delivery capacity of the channels and the irrigation pieces and the like are introduced, and a multi-objective function system for minimizing the overall water shortage rate and maximizing the crop yield is constructed. Through an index triangular perturbation mechanism, the global exploration capability is enhanced at the initial stage of search, the local search precision is optimized at the later stage, the stability and convergence of solutions are ensured, compared with a traditional method, the water utilization efficiency and the crop yield are improved, the stability of multi-target optimization in a complex environment is enhanced, and the method is suitable for large-scale popularization and application. And a reliable technical support is provided for the construction of an intelligent irrigation area water volume scheduling system.

The present application relates to a kind of wetland catchment canal water level monitoring adjusting device, belong to catchment canal water level adjusting tool technical field;Including transmission case, installation mechanism is provided with in the both sides of transmission case, installation mechanism is connected with the two sides of water channel inner wall;Lower water pipe is fixedly arranged at the lower end of transmission case, reinforced hose is slidably sleeved outside lower water pipe, drain pipe is arranged at the lower end outlet of reinforced hose;Transmission mechanism is arranged in transmission case, and transmission mechanism includes rotatable transmission shaft and rotatable shaft, winding roller is fixedly arranged on transmission shaft, steel wire rope is wound on winding roller, and the end of steel wire rope is connected with the upper end of reinforced hose;Vibration mechanism is arranged between shaft and lower water pipe, and vibration mechanism includes liftable vibration rod, steel ball is fixedly arranged in the lower end of vibration rod, and steel ball knocks lower water pipe;The problem that current wetland catchment canal water level monitoring adjusting device water level regulation effect is poor, cannot self-cleaning is solved.

The invention particularly relates to a canal ecological water resource allocation method based on a feedback mechanism, and the method comprises the steps: in a rainy season, when a water level gauge monitors the rising of a canal water level, closing or reducing the opening degree of an upstream water gate to control the canal water level in a safe range, adjusting the opening and closing states of the water gate and a check gate, and regulating and controlling the water resource allocation in a drainage basin; excessive water accumulation in a local section is avoided; data are monitored in real time to automatically adjust the working states of the sluice and the pump station, the sluice is automatically closed when the water level is too high, and downstream flood control pressure is relieved; in dry seasons, when the water level indicator displays that the water level drops to be close to or lower than the ecological flow guarantee water level, the upstream water gate is opened to increase the canal flow, or the pump station is started to pump underground water, and water in lakes or water storage facilities is injected into the canal; the water level and the flow are automatically monitored, and once the water level and the flow are lower than ecological flow threshold values, a water gate or a pump station is automatically opened for supplementing water; in the non-rainy season and the non-dry season, the water resource allocation of the canal is intelligently adjusted according to the weather forecast data in combination with the weather forecast data.

This invention discloses an evaluation system, method, and storage medium for the winter irrigation water transport process in farmland, comprising the following steps: Step 1: Selection of study area, study time, and verification area; Step 2: Analysis of the winter irrigation water transport path in the study area, divided into four levels: "irrigation canal - farmland surface - farmland groundwater - drainage ditch," constructing a water transport system; Step 3: Construction of an irrigation canal water transport algorithm; Step 4: Construction of a farmland surface water transport algorithm; Step 5: Construction of a farmland groundwater transport algorithm; Step 6: Construction of a drainage ditch water transport algorithm. Using the method and system of this invention, reasonable irrigation and drainage improvement methods can be proposed through simulation and prediction of irrigation and drainage volume and time. Predictions were made in the Ningxia section of the Yellow River Basin, with the overall 34-day winter irrigation period remaining unchanged, but delayed by 1 to 8 days for water saving predictions. Prediction results show that delaying winter irrigation can effectively improve the water transmission efficiency in the irrigation canal.

The present invention discloses a method for calculating the settlement of adjacent high-rise buildings during canal foundation pit excavation. The method first calculates the surface settlement caused by foundation pit excavation, taking into account the building. Then, considering the groundwater level change, the settlement caused by the groundwater level change is calculated. The surface settlement and the settlement values ​​of the groundwater level change are superimposed, and a settlement curve is drawn that takes into account the presence or absence of groundwater level changes. The inclinometer data of the high-rise building and the settlement data of the bottom of the building close to the ground are analyzed, and a settlement curve of the high-rise building during deep foundation pit excavation under the condition of canal water level changes is drawn. Finally, by comparing the data differences and performing error analysis, it is determined that the error of the calculation result of the method is controlled within a certain range, and the settlement value can be predicted more accurately. The calculation formula of the present invention not only takes into account the load of the building itself but also takes into account the impact of groundwater level changes on the building settlement caused by foundation pit excavation. The calculated settlement amount is more accurate and has a smaller error.

The utility model discloses a fish escape prevention device suitable for south-to-north water diversion midline trunk canal water diversion port, which comprises an escape prevention net plate and a positioning frame, the positioning frame is U-shaped, the bottom of the positioning frame is provided with positioning holes arranged side by side, each row of positioning holes comprises a plurality of positioning holes, two pairs of guide grooves are symmetrically arranged on the inner walls of the left and right sides of the positioning frame, and the guide grooves are communicated with the escape prevention net plate. The upper end of each guide groove penetrates through the top of the positioning frame, guide ribs are symmetrically arranged on the outer walls of the left side and the right side of the anti-escape screen plate, a plurality of positioning protrusions are arranged at the bottom of the anti-escape screen plate, the left side and the right side of the anti-escape screen plate are located in the left side and the right side of the positioning frame, and the two guide ribs of the anti-escape screen plate are connected with one pair of guide grooves in the supporting frame in a matched mode respectively. The bottom of the supporting frame is located at the bottom of the positioning frame, and the positioning protrusions on the anti-escape net plate are clamped in the row of positioning grooves corresponding to the supporting frame. The device is simple in structure and high in practicability, the problem that fishes escape from the water return gate of the water delivery trunk canal in the middle line of the south-to-north water diversion can be effectively solved, and a series of problems caused by blocking of the escape-proof net plate are solved.