86 results about "Surface runoff" patented technology

The invention relates to the technical field of data integration, and particularly discloses a perfluoro / polyfluoroalkyl substance multi-source exposure data integration risk assessment system, which is characterized in that environmental exposure data of perfluoro / polyfluoroalkyl substances is acquired through a multi-source environmental sensor array, and a PFAS multi-mode exposure feature database is established; carrying out pollution source isotope fingerprint analysis, and obtaining source contribution rate distribution maps of three pollution sources of industrial emission, surface runoff and atmospheric settlement through a nonlinear source analysis algorithm; constructing a three-dimensional geographic information dynamic migration model according to the source contribution rate distribution map, and generating a multi-medium dynamic migration flux matrix; a composite risk assessment model is established based on the multi-medium dynamic migration flux matrix, probability risk assessment is executed in combination with an ecological toxicity threshold database, and a space gridding risk grade map is output; the method not only fills the blank of the prior art in the aspects of multi-medium dynamic modeling and nonlinear source analysis, but also provides powerful technical support for environmental pollution control and ecological risk prevention and control.

The invention discloses a source network, plant, river and lake integrated model simulation method and device, a medium and equipment in the technical field of regional water environment pollution treatment. The method comprises the following steps: inputting a boundary condition and an initial condition of a first model into a pre-constructed surface runoff production and convergence model of a target area, and outputting a flow rate of surface runoff and a water quality index time sequence; inputting the boundary condition and the initial condition of the second model into a pre-constructed pipe network model of a target area, and outputting a flow and water quality index time sequence of key nodes in a pipe network system; and inputting the boundary condition and the initial condition of the third model into a pre-constructed riverway and lake grid model of a target area, and simulating the river and lake hydrodynamics and water quality change process of the target area. According to the invention, coupling simulation of surface runoff, pipe networks, rivers and lakes is realized, and a propagation path and an influence mechanism of pollutants are comprehensively reflected; and high precision and reliability of the model are ensured through parameter calibration.

The invention discloses an intelligent irrigation dynamic regulation and control method and system based on multi-source data. The method comprises the steps that the daily total water demand volume is calculated; acquiring the volume moisture content of the soil of the surface layer and the main root system layer in real time through an array sensor, and calculating the real-time infiltration gradient between the surface layer and the main root system layer; and executing a pulse irrigation process formed by alternation of irrigation pulses and infiltration waiting pulses, stopping water supply when the volumetric water content of the surface layer reaches a first preset threshold value, starting next water supply when the real-time infiltration gradient is lower than a second preset threshold value, and stopping water supply until the accumulated irrigation amount reaches the daily total required water volume or deep layer leakage is monitored. The system is used for executing the method. According to the method, the soil internal infiltration gradient serves as the physical basis of pulse start and stop, efficient conveying of water to deep soil is achieved, the contradiction that surface runoff and deep root system water shortage coexist is solved, and the water utilization rate is increased.

The invention relates to the technical field of urban drainage modeling simulation, in particular to a hybrid drive modeling method and device for an urban drainage pipe network, and the method comprises the steps: constructing a control equation of an earth surface runoff generation stage and a control equation of a pipe network conveying stage, and constructing a hybrid drive model based on the control equation of the earth surface runoff generation stage and the control equation of the pipe network conveying stage; constructing a mechanism driving model, and obtaining a prediction result error of the mechanism driving model; and establishing a data driving model, inputting the error into the data driving model to calculate a residual error correction value of the data driving model, determining a dynamic compensation value, fusing the dynamic compensation value and a prediction result based on a corresponding weight, and constructing a hybrid driving model of the urban drainage network. Therefore, the problem that the simulation precision and robustness of a complex drainage system cannot be effectively guaranteed due to the fact that the related technology still has obvious weaknesses in the aspects of complex working condition adaptability, multi-facility cooperative regulation and control supporting capacity, atypical rainfall scene prediction precision and the like is solved.

The invention discloses a camellia oleifera forest water and soil conservation method suitable for a hilly land, which comprises the following steps: carrying out partitioned soil preparation on the hilly land forest land, and arranging an intermittent ladder belt and an undisturbed soil belt in a slope cultivation area along a contour line; constructing a soil stabilizing structure and a water seepage buffer layer on the upstream side of the ladder belt to reduce corrosion and promote seepage; water collection slow-release ditches are arranged on the inner sides of the ladder belts for retaining and storing runoff; arranging a soil and water retention composite layer in the camellia oleifera planting pit; a desilting basin is arranged in the slope toe water collecting area to recover runoff; according to the method, the hilly land forest land is subjected to partitioned soil preparation, and the intermittent ladder belts and the undisturbed soil belts are arranged in the slope surface cultivation areas along the contour lines, so that slope surface runoff scouring can be weakened; a soil stabilizing structure, a water seepage buffer layer and a water collection slow release ditch are combined, so that runoff corrosion reduction and water retention are realized; the soil and water retention composite layers in the camellia oleifera planting pits are matched, so that the stability and the water retention capacity of the root zone can be enhanced, water and soil loss is effectively controlled under the condition that large-scale hard engineering is not needed, and the water utilization efficiency is improved.

The invention discloses a regional groundwater supply simulation method based on a rainfall intensity dynamic response mechanism. The method comprises the following steps: firstly, collecting and preprocessing data of a research area; then simulating a rainfall redistribution process; calculating surface runoff production and initial infiltration; calculating dynamic infiltration response based on rainfall intensity; calculating actual evapotranspiration; and finally outputting the groundwater replenishment amount. According to the method, the key technical problem that underground water supply under high-intensity rainfall is systematically underestimated due to the fact that an existing regional underground water supply simulation method is insufficient in rainfall intensity dynamic response and ignores a rapid deep seepage mechanism induced by high-intensity rainfall is solved.

The application discloses a method for measuring the influence of vegetation on runoff by combining a physical mechanism and an LSTM model, and comprises the following steps: step 1, collecting basic data of a research area; step 2, data processing; step 3, analyzing the influence mechanism among meteorology, vegetation, soil and runoff based on a SEM model; and step 4, simulating a runoff process based on an LSTM model to evaluate the influence of vegetation change on runoff. The method provided by the application analyzes the path of the influence of mountainous vegetation change on runoff and quantifies the influence amount, solves the problem of analyzing the influence of vegetation restoration on surface runoff attenuation, and provides a scientific reference for formulating a reasonable vegetation restoration plan in the next step.

The invention discloses an evaluation method of a hydrodynamic lifting technology based on terrain height difference. The evaluation method comprises the following steps: setting a threshold value based on a connected target to screen a target water body region to be connected; combining geographical, economic and humanistic factors to select resistance factors influencing water system communication, and determining the weight of each resistance factor to construct a water system communication comprehensive resistance surface; identifying potential water system communication galleries in the target water body area based on the target water body area and the water system communication comprehensive resistance surface; optimizing and adjusting a water system communication path according to the construction difficulty of the water system communication gallery and the current situation of regional surface runoff; and evaluating the regional hydrodynamic force lifting effect before and after the communication of the optimized and adjusted water system communication path. According to the method, the problems that a traditional numerical simulation method is complex in application, inconvenient to operate and the like in regional hydrodynamic evaluation are solved, and more convenient and efficient hydrodynamic evaluation is achieved.

The invention relates to the technical field of urban flood simulation, in particular to an urban flood simulation method based on a physical information neural network and multi-GPU calculation. The method comprises the following steps that a computational domain in urban flood simulation is divided into triangular grids, a data matrix is established, a solving process is divided into reconstruction calculation, flux calculation, bottom slope and friction source item calculation and flux updating, and then a two-dimensional shallow water equation finite volume solving process is constructed; a physical information neural network is used for replacing a numerical calculation step in a finite volume solving process of a two-dimensional shallow water equation, a simulation prediction model is obtained through training of the physical information neural network, and the simulation prediction model is used for rapid calculation of a surface runoff process; simulation coupling is carried out on the urban pipe network drainage process and the surface runoff process in urban flood simulation, and a drainage calculation model is constructed. According to the invention, rapid, stable and extensible simulation of large-scale urban flood is realized through an urban flood simulation technology.

The invention belongs to the technical field of pollutant traceability, and relates to a surface runoff particulate matter quantitative traceability method and system and a readable medium, and the method comprises the following steps: collecting element composition data of surface runoff particulate matters; classifying the particulate matters through a clustering algorithm according to the element composition data of the particulate matters; determining the average value of the element composition of each type of particulate matters; and comparing the average value of the elemental composition with the elemental composition characteristic spectrum, and determining the source type corresponding to each type of particulate matter. According to the method, source identification is carried out according to the characteristic that different sources have different element compositions, the source of the surface runoff particulate matter can be accurately identified, quantitative analysis of contribution of each source is realized, a scientific and accurate basis is provided for surface runoff pollution source prevention and control, targeted pollution control measures can be formulated, and pollution prevention and control efficiency can be improved.

The soil collecting device comprises a sample storage pipe and an outer sleeve arranged on the sample storage pipe in a sleeving mode, the upper end of the outer sleeve is open, the lower end of the outer sleeve is provided with a conical part, a supporting disc is arranged on the outer sleeve, a rotating disc located on the upper side of the supporting disc is movably arranged on the outer sleeve through a bearing, and at least one clamping hole is formed in the circumferential direction of the rotating disc. The bottom end of the sample storage pipe is closed, the upper end of the sample storage pipe is open, the sample storage pipe is provided with a mounting disc located on the upper side of the rotating disc, the bottom of the mounting disc is provided with a first mounting ring capable of being arranged on the rotating disc in a sleeving mode, the first mounting ring is provided with a first positioning structure matched with the clamping hole, and the circumferential wall of the sample storage pipe is provided with at least one feeding port; a material guiding opening matched with the feeding opening is formed in the outer sleeve, and a second positioning structure used for aligning the feeding opening and the material guiding opening is arranged between the mounting disc and the supporting disc, so that the problems of inconvenience in use and difficulty in operation in the prior art are solved, and the efficiency and convenience of soil sampling are improved.

The invention relates to the technical field of water and soil simulation analysis, and discloses a slope infiltration and stability analysis method, a medium and equipment. According to the method, seepage characteristics and a fractal theory are introduced, a GA model is improved, a new slope rainfall infiltration model is provided, the model is combined with groundwater distribution to establish a slope initial moisture content distribution model, a runoff-seepage coupling effect is introduced, and the influence of slope surface accumulated water on the infiltration rate is dynamically analyzed; the Mohr-Coulomb intensity criterion is optimized based on the saturated zone seepage effect and the fractal theory, the improved infiltration model is applied to limited slope stability analysis, and the limitation that a traditional model is only suitable for an infinite long slope is broken through; by comprehensively considering factors such as soil particle size characteristics, slope surface runoff, gradient, rainfall intensity and underground water level, the safety coefficient of each point position in the slope can be accurately calculated, and the accuracy of infiltration process description and the reliability of slope stability analysis under the heavy rainfall working condition are remarkably improved.

The application provides a mature rubber tree fertilization method based on nutrient circulation, which comprises the following steps: step one, establishing a relational expression Y i = litter decomposition + rainfall input + tree leaching + artificial fertilization; Y o = tree absorption + surface runoff; step two, using the soil nutrient balance principle, i.e. nutrient input Y i = nutrient output Y o , the above formula is brought into, and litter decomposition + rainfall input + tree leaching + artificial fertilization = tree absorption + surface runoff is obtained; step three, through nutrient calculation and data analysis, a function relationship between the recommended amount of fertilization Y f of the mature rubber tree and the tree age X is fitted, i.e. Y f =aX 2 +bX+c; the application solves the contradiction that the fertilization management does not meet the production demand caused by the problems such as single rubber tree fertilization formula, old diagnosis technology and difficult-to-determine test analysis index, and has good yield-increasing effect and production practicability.

This invention discloses a DEM data correction method that takes into account the characteristics of surface runoff routes, belonging to the field of digital elevation model construction technology. It solves the problem that in some scenarios, region-based DEMs can no longer accurately simulate the surface runoff process, thus preventing DEMs from playing their due role in urban surface runoff simulation. The key technical points are that the method includes the following steps: S1, data preparation: acquiring DEM data of the analysis area and marking the outlet and boundary positions in the DEM raster; S2, marking the flow direction of the raster cell at the outlet location as 0, indicating that the water flow cell of that raster does not flow to other raster cells; S3, finding the raster cells adjacent to the outlet cell and calculating the flow direction of each raster cell according to the principle of maximizing elevation difference. The effect is that this invention covers the key technology of raster elevation value correction based on surface flow direction characteristics, which can improve the application value of DEM data in the field of hydrological analysis.

The invention provides an ecological management method for surface runoff ditch-passing mining, which comprises the steps of pre-mining management, during-mining management, post-mining management and ecological restoration, and the pre-mining management method provided by the invention can reduce the leakage area of flowing water at the bottom of a ditch, and reduce the project amount of the during-mining management and the post-mining management. According to the mining treatment method, the subsidence cracks and the low-lying areas can be rapidly repaired, and the anti-seepage and anti-scouring capacity of the channel is improved. According to the post-mining treatment method, the depression appearing after mining can be subjected to multi-layer compaction repair, and the water flow scouring resistance effect can be improved. The mining safety can be guaranteed, the underground leakage phenomenon is avoided, and the local ecological environment can be restored.

This invention discloses an ecological pollution assessment method and visualization system that integrates hydrogeological factors, relating to the field of ecological and environmental assessment technology. The method includes constructing potential ecological risk indices for soil and water bodies and performing spatial interpolation, then performing three-dimensional coupling and fusion based on topographic and hydrological connectivity. Topographic factors such as slope, runoff direction, and surface runoff are incorporated into the pollution migration weight model. The spatial correlation structure of the risk index at sampling points is characterized based on a semi-variogram, ensuring that the contribution weight of each sampling point to the interpolation point has a clear statistical basis. Based on the three-dimensional coupled pollution model, geographical attributes and ecological sensitivity levels are introduced for weighted correction, so that the assessment results not only reflect pollution intensity but also simultaneously reflect the regional ecological carrying capacity, thus providing systematic support for the refined pollution assessment and management of ecological and environmental zones.

The application discloses a quick assembling and disassembling type field steep slope surface runoff monitoring device, which comprises an organic plate, a water collecting tank is installed on the water-approaching surface of the organic plate, an assembling mechanism, the assembling mechanism comprises concave seats and stable components, the two concave seats are symmetrically arranged on the water-approaching surface of the organic plate, the stable components comprise threaded rods and extension columns, the extension columns are symmetrically arranged on the side surfaces of the water collecting tank, one end of the extension column abuts against the concave seat, the side surface of the extension column is provided with a threaded groove, the inside of the concave seat is provided with a threaded hole for the threaded rod to penetrate, and one end of the threaded rod is screwed into the threaded groove, the extension column is of an L-shaped structure, and the extension column and the water collecting tank are of an integral structure, and the concave seat and the organic plate are of an integral structure, and the device can be assembled and spliced according to actual requirements of users to realize runoff monitoring under various slopes.

The invention discloses a micro-topography dynamic stagnation process simulation method based on basic micro-topography units, which comprises the following steps: for a micro-topography area, taking the basic micro-topography units as basic units for filling pits, and performing iterative calculation by adopting a dynamic pit filling method according to a filling and discharging relation of the basic micro-topography units, so as to obtain a micro-topography dynamic stagnation process; and simulating a depression filling process of a depression system in the micro-topographic region in a rainfall process to obtain a dynamic retention process of the whole micro-topographic region. According to the method, ordered expression of an unordered microtopography structure is achieved, the number of units participating in dynamic depression filling calculation is greatly reduced, the dynamic depression filling calculation efficiency of the microtopography can be remarkably improved, the method can be widely applied to simulation analysis of the dynamic stagnation process of the microtopography area, and the dynamic depression filling calculation efficiency of the microtopography area is improved. And an efficient and extensible new method is provided for quantitatively depicting the dynamic retention effect of the microtopography on the surface runoff.

The application relates to the technical field of water and soil simulation analysis, and discloses a slope infiltration and stability analysis method, medium and equipment. The method improves a GA model by introducing seepage characteristics and fractal theory, a new slope rainfall infiltration model is proposed, the model establishes a slope body initial water content distribution model in combination with underground water distribution, and the runoff-seepage coupling effect is taken into account to dynamically analyze the influence of slope surface water on the infiltration rate; the Mohr-Coulomb strength criterion is optimized based on the saturated zone seepage action and fractal theory, the improved infiltration model is applied to finite slope stability analysis, and the limitation that the traditional model is only applicable to infinite long slopes is broken; by comprehensively considering factors such as soil particle size characteristics, slope surface runoff, slope, rainfall intensity and underground water level, the safety factors of each point in the slope body can be accurately calculated, and the accuracy of the description of the infiltration process under the condition of heavy rainfall and the reliability of the slope stability analysis are significantly improved.

The application discloses a kind of urban flood calculation methods based on grid aggregation runoff, comprising the following steps: step 1, drainage pipe network topology check and generalization;Step 2, drainage node runoff zoning;Step 3, mesh subdivision and runoff parameter determination;Step 4, mesh and drainage node runoff area topological relationship establishment;Step 5, mesh runoff calculation;Step 6, mesh runoff distribution;Step 7, mesh and drainage node interactive flow estimation;Step 8, mesh and drainage node interactive flow correction;Step 9, drainage node net inflow calculation.The application is based on the idea of grid aggregation runoff, the grid of specific range is "aggregated" runoff, directly flows into drainage pipe network node, and other surface flood volume is still calculated according to the traditional method of surface node interaction method, in the case of not substantially increasing the amount of calculation, avoid the problem that surface runoff cannot converge into drainage pipe network, realize more accurate urban flood calculation.

The invention discloses an annular water interception and drainage protection device for a mountain tower. The annular water interception and drainage protection device comprises a water interception device, a water collection tank, a drainage pipe and a cleaning structure. The water intercepting device is of a cylindrical structure installed on the ground and below a tower bottom foundation structure and comprises a protective sleeve on the top and a water inlet in the side face, and a grating is arranged at the position of the water inlet. A cleaning structure is further arranged on the water intercepting device and comprises a rotating mechanism arranged on the top of the protective sleeve and a rotating scraper connected with the outer end of the rotating mechanism. A water collecting tank is arranged below the ground corresponding to the water intercepting device, and the top of the water collecting tank is communicated with the water inlet; a drainage pipe communicated with the water collecting tank is arranged on the side of the bottom of the water collecting tank. The device can effectively intercept surface runoff and loose soil and stones above a hillside, and meanwhile, catchment water is orderly guided into a drainage system. The phenomenon that water flows disorderly and overflows around the tower foundation and washes and empties foundation soil is effectively avoided, so that the stability of the foundation structure is remarkably enhanced, and the overall safety of the tower is guaranteed.

This invention provides a method for site selection of drainage facilities for mountain railways based on a hydrological spatial site selection analysis model, relating to the field of runoff pollution control technology. The method involves preprocessing collected data to obtain environmental data for mountain railways; constructing a three-dimensional hydrological spatial site selection analysis model using a topographic factor analysis layer, a runoff calculation layer, a runoff point screening layer, a spatial clustering analysis layer, a geometric identification classification layer, and a drainage facility recommendation layer; and using this model to perform spatial clustering dimensionality reduction analysis and surface runoff calculation on the mountain railway environmental data to obtain the site selection results for drainage facilities, thus completing the site selection for mountain railway drainage facilities. This invention solves the problem of accurate site selection for drainage facilities along mountain railways.

The invention discloses a method for evaluating the phosphorus loss risk of different crop systems in a plateau basin, and the method comprises the following steps: S1, obtaining source factor evaluation indexes of a target region: phosphorus surplus and soil total phosphorus, and migration factor evaluation indexes: surface runoff depth, soil erosion modulus, distance from the target region to a river, and distance from the target region to a target water body; s2, evaluating a phosphorus loss risk through the phosphorus index; the calculation formula of the phosphorus index is shown in the specification; pI represents a phosphorus loss risk index, Si and Wi are respectively a risk value and a weight corresponding to the source factor evaluation index, and Tj and Wj are respectively a risk value and a weight corresponding to the migration factor evaluation index. According to the method, phosphorus surplus in crop production is used as a source factor instead of phosphorus input commonly used in previous research, the method is better used for drainage basin non-point source phosphorus loss risk evaluation, and a phosphorus index evaluation system for the southern plateau agricultural drainage basin in China is established.

A kind of heavy metal contaminated soil in particulate state and effective state arsenic antimony synchronous solidification and stabilization material, preparation method and application, including the following mass percentage of components: polyacrylamide 5~25%, nano silicon dioxide 5~20%, fly ash 10~25%, ferrihydrite 20~60%, biochar 5~20%.The material of the application can efficiently improve the mechanical properties of heavy metal contaminated soil and prevent water and soil erosion, the solidification effect of particulate state arsenic / antimony is more than 95%, the 28d unconfined compressive strength can be increased by 30~110%, while the leaching rate of effective state arsenic / antimony is reduced by more than 99%.The material is suitable for repairing arsenic / antimony composite contaminated soil, improving soil stability, and preventing heavy metals from spreading around through surface runoff and interflow.The material is an environmentally friendly material, which does not damage and greatly disturb the soil, and can improve the soil while solidifying and stabilizing arsenic / antimony, and maintain the soil utilization value.

The invention discloses a coal storage yard surface runoff multi-parameter real-time sensing and dynamic diversion device and method, and relates to the technical field of diversion devices, the coal storage yard surface runoff multi-parameter real-time sensing and dynamic diversion device comprises a diversion container, the bottom of which is provided with a qualified sewage discharge port and an unqualified sewage discharge port; the water quality detection assembly comprises a water pump assembly, a fusion sensor assembly, a circulation tank group and a liquid level sensor; a water outlet of the water pump assembly is connected with a water inlet of the circulation tank group; the fusion sensor assembly is arranged in the circulation tank group; a water outlet of the circulation tank group is communicated with the shunting container; the liquid level sensor is arranged in the shunting container; the control assembly comprises a controller, a valve I connected with the qualified sewage discharge outlet and a valve II connected with the unqualified sewage discharge outlet; the controller is electrically connected with the water pump assembly, the fusion sensor assembly, the liquid level sensor, the first valve and the second valve. According to the invention, original data support can be provided for sewage treatment control through multi-sensor fusion detection, so that the surface runoff sewage of the coal storage yard can be treated efficiently and compliantly.

The invention discloses a semi-distributed urban hydrological model catchment area outflow node identification method, and belongs to the technical field of urban hydrological models. The method is provided for solving the problems of inaccurate water catchment area outflow node identification and low efficiency caused by complex terrain, data missing and the like in the prior art. The method comprises the following steps: on the basis of high-resolution DEM data, calculating a slope value of each grid unit by using a PLANAR algorithm; the vector sub catchment area is used as a statistical unit, a statistical average value of internal coverage slope grid values is calculated, and the statistical average value is used as a surface runoff generalization flow direction; screening a potential outflow point by taking the geometric center of the sub catchment area as a base point; taking the potential outflow point as a search center, determining a dynamic search radius threshold by combining the area square root of the sub catchment area, retrieving a road network or a pipe network topology node, and determining a final outflow node; and exceptional conditions such as average slope calculation failure and DEM data missing are processed in a targeted manner. The method improves the recognition accuracy and efficiency of the outflow node, and assists the planning and design of an urban drainage system.

The utility model discloses a buried pipe water pumping type coal mining subsidence land treatment device, which is characterized in that a water retaining wall is vertically inserted into a coal mining subsidence land, is arranged around a water accumulation area and is connected with the water accumulation area, so that the exterior and the interior of the water accumulation area are separated, surface runoff and underground shallow incoming water are intercepted, a groove is formed in the bottom of a foundation, and a collecting box is arranged in the groove; a plurality of vertical buried pipes are arranged to be connected with a collecting box, the other ends of the vertical buried pipes are connected with a suction assembly used for pumping water, sliding grooves are formed in the inner walls of pipe bodies of the vertical buried pipes, blocking plates which slide up and down and are used for preventing impurities from being sucked in are arranged between the sliding grooves, and the blocking plates are used for preventing the impurities from entering the suction assembly; the suction force of the blocking plate disappears, the blocking plate naturally falls down, a certain acting force is generated, impurities on the blocking plate fall into the collecting box, then the problem that a buried pipe in a traditional buried pipe type water pumping device is prone to being blocked is solved, the treatment efficiency is improved, and the structure is simple.

The application discloses a kind of urban waterlogging simulation methods based on SWMM and SIMWE coupling model, steps are as follows: collecting and processing the basic data and historical heavy rainfall data of research area;Design different recurrence period rainstorm event;SWMM-SIMWE coupling model is built and verified;Based on design rainstorm simulates urban waterlogging condition in a certain period in the future.Method combines SWMM and SIMWE model, respectively for simulating underground drainage system and surface runoff, can more accurately, efficiently reflect the water flow movement and water distribution under complex urban topography.The method solves the problem that it is difficult to accurately and efficiently simulate the dynamic of urban drainage system and surface runoff in the prior art through reasonable coupling mechanism, significantly improves the water exchange efficiency and accuracy between underground drainage system and surface water flow.Simulation results provide a scientific basis for urban waterlogging risk assessment and flood drainage system optimization, help to improve the disaster prevention ability of city.

The application relates to the technical field of garden greening equipment, in particular to a mobile automatic spraying equipment for garden greening, which comprises a mobile trolley and an angle adjusting assembly, the bottom of the mobile trolley is provided with mobile self-propelled wheels, the angle adjusting assembly comprises a driving motor, the driving motor is fixedly connected to the bottom of the mobile trolley, an angle adjusting base is fixedly connected to the top of the mobile trolley, and the driving motor has an output shaft. When it is dry, the spray head is lowered to the surface of the green belt, the drip irrigation mode is switched, the water droplets of atomization spraying are prevented from drifting, water resource waste is greatly reduced, the dry soil is slowly penetrated through drip irrigation combined with intermittent rotary water spraying, surface runoff is avoided, water absorption by deep soil is ensured, the sliding sealing plate is linked with the spring through gravity, the spraying groove is automatically closed, the drip irrigation channel is accurately conducted, water leakage during drip irrigation is avoided, and the structure can be self-adaptively sealed.

The present application belongs to the technical field of hydrological remote sensing, and relates to a groundwater recharge degree collaborative inversion method and system based on multi-source remote sensing and intelligent algorithm. The method comprises: collecting data and performing pretreatment to obtain a monthly groundwater storage change sequence, a monthly actual evapotranspiration, a surface runoff and a net drainage; reconstructing a vertical direction water balance equation on a monthly scale; calculating a monthly water surplus of each pixel; data downscaling; recharge event identification and estimation of the value of recharge amount; verification of the error of monthly precipitation, monthly actual evapotranspiration and monthly groundwater storage change sequence, and evaluation of the inversion result. The present application avoids a large number of hypothetical parameters of a black box model, does not need an expensive dense ground monitoring network, and has strong realization; realizes spatial explicit estimation of the recharge amount; can generate a monthly or seasonal groundwater recharge amount time sequence, reflects the dynamic change of the recharge process, is superior to a static annual average value provided by a traditional method, and has strong dynamic monitoring capability.