64 results about "Groundwater recharge" patented technology

The present application relates to the technical field of resource assessment, and particularly relates to a system and method for accurately assessing water resource quantity in an inland river basin, comprising the following steps: arranging a multi-modal sensor network in the inland river basin, collecting hydrological characteristic data of the inland river and surrounding wetlands, extracting implicit water exchange characteristic indexes between the inland river and the wetlands, including wetland groundwater recharge, inland river boundary seepage rate and seasonal water exchange amplitude; based on the implicit water exchange characteristic indexes between the inland river and the wetlands, establishing an inland river-wetland implicit water exchange dynamic model; embedding the inland river-wetland implicit water exchange dynamic model into the water cycle system of the inland river basin, and comprehensively calculating the surface water resource quantity and the groundwater resource quantity in the basin. Through the implicit water exchange between the wetlands and the inland river, the present application eliminates the wetland consumption part, so that the water resource quantity calculation is more accurate.

The invention relates to the technical field of underground water recharging, and particularly discloses a deep foundation pit underground water pumping and recharging balanced vacuum pressure type recharging device which comprises a basic hardware system, a sealing isolation system, a dynamic regulation and control system and a monitoring feedback system. The sealing isolation system comprises a vacuum well lid; according to the pipeline sealing assembly, a hydraulic drive sealing ring is arranged at the joint of a dewatering well water outlet pipe and a recharge well water inlet pipe, the sealing ring automatically expands to fill gaps during water injection, and air permeation is thoroughly isolated; through triple air isolation formed by water pumping pipe head immersion, vacuum well lid sealing and hydraulic sealing rings, contact between underground water and air is reduced to the maximum extent, oxidation reaction is reduced from the source, and the precipitation amount of iron and manganese oxides is reduced by 60% or above; meanwhile, bubbles and sediments can be effectively removed, more than 90% of bubbles and sediments can be actively removed through a periodic back raising and silt pumping mechanism, the anti-blocking performance of the recharge well is remarkably improved, and therefore the service life of the recharge well is prolonged.

The invention relates to the technical field of underground water control and intelligent construction of deep foundation pit engineering, and discloses an underground water recharge control system and method. Comprising a water level real-time monitoring module, a central intelligent control module, a recharge well group regulation and control module, a flow dynamic regulation module, a pressure balance compensation module, a servo support linkage module, a risk early warning module and a data visualization module. A cloud-edge cooperative computing architecture is established, intelligent control is realized, and the system has the advantages that firstly, an artificial intelligence algorithm is introduced into the field of hydrogeological regulation and control, and self-adaptive optimization of a recharge strategy is realized; secondly, a coupling control mechanism of recharge pressure and supporting axial force is established, and foundation pit deformation is restrained from the source; and thirdly, through deep fusion of a robot system and a recharge system, a full-process digital construction system is constructed, so that the efficiency, precision and safety of super high-rise building construction are greatly improved.

The invention relates to the technical field of data processing, in particular to a water source heat pump air conditioning system emission reduction data evaluation method and system, and the method comprises the steps of data acquisition and processing, data complementation, reference scene modeling and simulation, actual emission calculation, emission reduction calculation and analysis, full life cycle emission calculation and result output. According to a traditional full-life-cycle evaluation method, specific resource conditions, environment cost, policy intensity and other regional factors of a project location are ignored, so that an evaluation result is lack of regional guiding significance; according to the method, a regional influence weight adjustment model constructed based on a multi-layer perceptron neural network is introduced, differential parameters such as underground water recharge cost, pollution control cost, recovery industry level and carbon policy intensity of a project location are taken as input, and weight coefficients of all life cycle stages are dynamically calculated; the evaluation result can dynamically reflect where emission reduction is implemented, the value is higher, and a more accurate scientific basis is provided for differentiated decisions of different areas.

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 provides a kind of intelligent layered control well system and control method suitable for multiple aquifers, relating to foundation pit dewatering and groundwater recharge technical field, it includes well pipe, pumping and irrigation device, controllable plugging component, pore pressure sensing unit, pressure sensing unit and wellhead control device, controllable plugging component is set in well pipe corresponding to aquiclude of aquifer, including annular waterproof layer and spherical inflatable grouting bag, pore pressure sensing unit detects pore water pressure of target aquifer and non-target aquifer respectively, pressure sensing unit detects the pressure of grouting bag acting on well wall, wellhead control device determines the plugging effectiveness in real time based on the pore pressure change of non-target aquifer during pumping and irrigation process, and automatically triggers grouting supplement when determining that plugging is insufficient, the application realizes flexible switching of multiple working conditions in single well and dynamic maintenance of plugging reliability through active dynamic closed-loop control, effectively reduces the number of wells, reduces construction cost, and reduces disturbance to surrounding groundwater environment.

The invention relates to the technical field of geological engineering landslide physical model tests, and discloses a test device for measuring the deformation and sliding process of a side slope under a non-pressure infiltration condition, which comprises a support steel frame, and a non-closed water tank for providing a non-pressure water source is configured on the support steel frame. The water outlet end of the non-closed water tank is communicated with a water supply pipe used for conveying non-pressure water, a gate used for regulating and controlling the infiltration flow is arranged in the non-closed water tank, the inner surface of the non-closed water tank is fixedly connected with a water seepage hole panel, and a moving assembly is arranged on the supporting steel frame. According to the method, the non-pressure infiltration state formed by natural supply of underground water can be restored, the evolution process of the loess slope landslide containing the structural surface under the non-pressure infiltration condition is adjusted, and morphological characteristics such as crack development, sliding surface formation and displacement change of the slope in each stage can be analyzed; and the structural surface-containing loess landslide caused by different water level heights under the underground water non-pressure infiltration condition can be simulated.

The invention discloses a glacier melt water resource cooperative regulation and ecological restoration system and method, and belongs to the technical field of water conservancy projects and ecological restoration. The system comprises a distributed dynamic sensing network used for acquiring multi-source environment data in a drainage basin; the multi-agent collaborative decision-making module is used for carrying out collaborative decision-making by utilizing a deep reinforcement learning agent, carrying out global multi-objective optimization through a central coordinator and generating a collaborative regulation and control instruction; the self-adaptive execution and feedback adjustment module is used for executing the instruction and collecting feedback data; and the system self-evolution learning module continuously optimizes the decision strategy based on experience playback and offline training. According to the method, intelligent coordinated regulation and dynamic optimization of glacier melt water diversion, groundwater recharge and vegetation irrigation are realized; the water resource utilization efficiency, the recharge precision and the vegetation recovery effect are effectively improved, and the system has the adaptation and evolution capacity for coping with environmental changes.

The invention relates to the technical field of plant planting, and discloses a pasture contrast planting test device combined with underground water replenishment, comprising: a support table, the upper surface of which is fixedly connected with a second fixing plate; the adjusting mechanism is used for adjusting the illumination height; the adjusting mechanism comprises a first limiting frame, the lower surface of the first limiting frame is fixedly connected to the upper surface of the supporting table, a sliding plate is slidably connected to the interior of the first limiting frame, and a connecting plate is fixedly connected to one end of the sliding plate; the spraying mechanism is used for controlling the watering angle; the water injection mechanism is used for injecting underground water; the rotating mechanism is used for rotating the planted plants. A connecting plate is pulled to drive a sliding plate to move, a gear moves on a rack, a second rotating shaft drives a transmission shaft to rotate, a first rotating shaft is driven to rotate, a connecting rod is driven to rotate, and therefore the growth lamp is driven to rotate, and the effect that the irradiation angle is adjusted while the height is adjusted is achieved.

The invention discloses a surface water and underground water combined dispatching system and method for coping with extreme climate changes. The system comprises a rainwater diversion mechanism connected with a valley river channel, a water storage dispatching mechanism built in urban underground and an underground water recharge mechanism communicated with underground water. The rainwater diversion mechanism comprises an initial rainwater diversion pipe which is buried at the bottom of the valley river channel and extends vertically, and the lower end of the initial rainwater diversion pipe is communicated with a rainwater collecting pipe through a diversion communicating pipe; a diversion opening and closing mechanism is arranged at the upper end of the initial rainwater diversion pipe; a flood discharge and overflow mechanism is connected with the valley river channel; the downstream end of the rainwater collecting pipe is communicated with a plurality of rainwater temporary storage pools, and the plurality of rainwater temporary storage pools are connected through rainwater flow equalizing pipes; the system has a whole-process synergistic effect and can cover the whole rainfall treatment link, a complete chain of rainfall from collection to utilization is connected in series through three core mechanisms of rainwater diversion, water storage scheduling and underground water recharge, and meanwhile the flood discharge requirement is met.

The invention discloses a high-salinity mine water deep well ex-situ recharge resource water retention and remediation method, and belongs to the technical field of mine water recharge and underground water supply. The method comprises the following steps: collecting and analyzing basic data, investigating geothermal development conditions, and determining underground water consumption conditions and water quality characteristics of each water-containing geothermal layer; based on the water quality safety principle and the mining safety principle, a proper recharge target aquifer is screened; establishing a three-dimensional underground water numerical model, simulating the influence of different recharge amounts, hole numbers and intervals on an underground water flow field, obtaining the relationship between the maximum water level uplift and the parameters, and forming various recharge schemes; and by taking mining safety as a red line and combining economic indexes, performing water filling strength evaluation on the scheme under a long-term recharge condition, and determining an optimal recharge scheme. According to the method, resource utilization of the high-salinity mine water is achieved, stable supply is provided for geothermal reservoirs, the mine water treatment cost can be reduced, coal mining safety is guaranteed, and the method has important significance on coal-water-heat collaborative mining.

The present application relates to a kind of calculation methods of arid inland basin groundwater resource recharge, in preselected area setting multiple exploration points, obtain the geological structure composition and hydrogeological condition of area;Geological structure model of area is constructed;Based on the geological structure model of area, plain area space aquifer permeability coefficient, aquifer water supply degree is divided into area;With the help of in-situ monitoring test mode, surface water runoff of monitoring point is collected, based on runoff, obtain groundwater recharge;With the help of statistical method, the function curve of recharge and runoff is established, and the prediction formula of recharge is obtained;Based on the prediction formula of recharge and hydrogeological condition, the annual recharge of groundwater recharge of area is predicted.This method solves the problem that the calculation of arid inland basin groundwater resource recharge is not accurate, difficult to calculate, difficult to manage groundwater resources, difficult to configure.

The invention provides a coastal miscellaneous fill dewatering system, which relates to the technical field of geotechnical engineering groundwater control, and comprises a closed water interception dam body surrounding the periphery of a construction area, a plurality of water collection pits arranged in an area enclosed by the water interception dam body, and a plurality of water suction pumps arranged in the water collection pits in a one-to-one correspondence manner, an annular closed groove serves as a carrier of the water interception dam body, the groove penetrates through a highly permeable plain fill stratum, a weakly permeable silt silty clay layer is embedded in the groove, silty clay which is compacted in a layered mode is replaced in the groove, a reinforced sealing sill is constructed, and the water interception dam body and the weakly permeable silt silty clay layer form a water blocking system with the periphery and the bottom closed. The device is mainly used for underground water control during construction of a coastal miscellaneous fill area foundation pit, a water blocking system with the periphery and the bottom closed is formed by means of the weakly permeable silt silty clay layer, external underground water supply is effectively blocked, and dry groove operation of the foundation pit is ensured.

The present application provides a kind of coastal miscellaneous fill precipitation system, it is related to geotechnical engineering groundwater control technical field, the present application includes the closed cut-off dam body around the periphery of construction area, multiple water sumps arranged in the enclosed area of cut-off dam body and multiple water pumps correspondingly arranged in water sump, cut-off dam body takes annular closed groove as carrier, groove penetrates strong water-permeable soil filling layer and embeds weak water-permeable silt silty clay layer, replace layered compacted silty clay is placed in groove, constructs reinforced sealing sill, cut-off dam body and weak water-permeable silt silty clay layer form the closed water-blocking system of periphery and bottom.The present application is mainly used for groundwater control when coastal miscellaneous fill area foundation pit construction, relies on weak water-permeable silt silty clay layer to form the closed water-blocking system of periphery and bottom, effectively blocks external groundwater recharge, ensures foundation pit dry groove operation.

This application provides a regional-scale groundwater recharge mechanism prediction method combined with machine learning. The method includes: performing a qualitative analysis of the target area to generate a groundwater recharge mechanism; processing environmental factor data using a soil water isotope prediction model and a groundwater isotope prediction model to obtain a soil water isotope landscape map and a groundwater isotope landscape map; retrieving a set of historical quantitative analysis samples that meet the soil water isotope landscape map, the groundwater isotope landscape map, and the environmental factor data, and calculating a set of high-frequency values of the linear excess (lc-excess) of groundwater and matrix flow predictions that correspond one to one; calculating a set of matrix flow recharge ratios; and when the matrix flow recharge ratio set meets a quantitative proportion threshold, adding the groundwater recharge mechanism and the matrix flow recharge ratio set to the groundwater recharge mechanism analysis results. This method solves the technical problem of low accuracy in regional-scale groundwater recharge mechanism prediction in the prior art.

The invention provides a method and system for calculating a secondary rainfall infiltration replenishment coefficient based on a water level fluctuation method, and the method comprises the steps: carrying out the preprocessing of continuously collected underground water level monitoring data, and constructing a water level descending section sample set; constructing a main water recession curve by fitting the function relationship between the underground water level and the decline rate in the sample set of the water level decline section; according to the main water recession curve, identifying a supply period, a supply period starting time and a supply period ending time, and matching a rainfall event corresponding to the underground water supply period; the effective water level rising amplitude is obtained by extrapolating and correcting the water recession curve; and calculating the secondary rainfall infiltration replenishment coefficient by using the effective water level rise amplitude. Based on the method, the invention further provides a system for calculating the secondary rainfall infiltration replenishment coefficient based on the water level fluctuation method. According to the method, automation of calculation of the secondary rainfall infiltration replenishment coefficient is achieved, estimation efficiency and result reliability are remarkably improved, and technical support is provided for groundwater resource management, regulation and storage scheduling and replenishment effect analysis under the background of climate change.

The application discloses a method for supplementally planting Populus euphratica and its companion species by drip irrigation combined with underground water, and steps are as follows: S1, determining a supplementally planting plot and a water source, and carrying out land preparation; S2, calculating a required Populus euphratica number, and determining a companion species type, a planting mode and a required number; S3, reasonably arranging seedling raising according to a supplementally planting time; S4, carrying out supplementally planting seedling transplanting and seed direct sowing; and S5, reasonably carrying out seedling period management.The method provided by the application has multi-effectiveness, can significantly improve a Populus euphratica forest seed update survival rate, simultaneously fully utilizes topographic advantages and residual flood storage of a previous year, improves water utilization efficiency, and plays a good water-saving role; the method is good in economic practicability, is simple in technical operation and easy to master, is good in material economy and practicability, greatly reduces an ecological forest protection and repair input cost, and is suitable for wide range of popularization and application.

The invention relates to the technical field of groundwater supply, in particular to a comprehensive evaluation method for suitability of groundwater supply for karst fissure zone leakage, which comprises the following steps: acquiring fissure node information to construct a path, calculating density and turn-back rate to identify mutation, extracting flow and water head sequence to discriminate an unstable area, and positioning a mutation node by combining lithology and integrity. According to the method, the fracture node path is constructed, the fold-back rate and the density change are calculated, the structure sudden change section is recognized, the fluctuation intensity is calculated by superposing the hydraulic response sequence, the supply unstable area is judged, and the influence graph block is formed by combining the fracture node path and the fold-back rate and the density change. The method comprises the following steps: extracting a lithology label and an integrity index, identifying microscale structure variation, positioning a mutation node, combining fracture density and an anti-permeability grade, screening an interference path, overlapping paths, integrating into a weakened pattern spot, mapping to an evaluation pattern layer, and constructing an identification, response, interference judgment and evaluation constraint linkage mechanism.

The application discloses a functional rainwater garden suitable for a sponge city, which comprises multiple-stage baffling areas which are connected in sequence and have gradually decreasing heights, wherein the multiple-stage baffling areas comprise a first-stage baffling area, a plurality of intermediate-stage baffling areas and a last-stage baffling area; the first-stage baffling area and the intermediate-stage baffling areas are sequentially provided with a first water storage layer and a first cover layer from top to bottom; the last-stage baffling area is sequentially provided with a second water storage layer, a second cover layer, a planting soil layer, a medium sand filtering layer, a geotextile, a storage and infiltration layer, a gravel drainage layer and a water permeation pipe from top to bottom; the first cover layer and the second cover layer comprise gravel and construction waste particles; and the storage and infiltration layer is made of construction waste. The construction waste is used in the construction of the cover layer and the storage and infiltration layer, so that the construction waste piling problem can be solved, the disposal cost can be saved, the environmental pollution can be reduced, the rainwater can be infiltrated in place by using the green land, the rainstorm runoff peak value and rainwater discharge can be reduced, and the groundwater recharge can be increased.

This invention relates to the field of well cover technology for groundwater recharge wells, and more particularly to an intelligent well sealing device for groundwater recharge wells. The device includes a well cover with a layered structure, comprising an upper cover and a lower cover, forming a sealed equipment housing space. Within this space are a microprocessor, an alarm, a power supply, and a communication module. An anomaly sensor is located at the contact surface between the upper cover and the wellhead mounting base. A water level sensor is located at the lower end face of the lower cover. The microprocessor is electrically connected to the alarm, communication module, water level sensor, and anomaly sensor via wires. All components—the microprocessor, alarm, communication module, water level sensor, and anomaly sensor—are electrically connected to the power supply via wires. This invention combines intelligent detection technology with a traditional well cover structure, enabling real-time, remote monitoring of the status of groundwater recharge wells.

This invention relates to the field of groundwater recharge technology, specifically a comprehensive evaluation method for the suitability of groundwater recharge through seepage in karst fissure zones. The method includes the following steps: acquiring fissure node information to construct paths; calculating density and return rate to identify abrupt changes; extracting flow and head sequences to determine unstable zones; combining lithology and integrity to locate abrupt change nodes; analyzing fissures and impermeability to screen interfering paths; integrating overlapping segments to generate weakened patches and mapping them to an evaluation layer to form an influence map. In this invention, by constructing fissure node paths and calculating return rate and density changes, structural abrupt change segments are identified; by superimposing hydraulic response sequences to calculate fluctuation intensity, unstable recharge zones are determined; lithological labels and integrity indices are extracted; microscale structural variations are identified; abrupt change nodes are located; and by combining fissure density and impermeability level, interfering paths are screened. Overlapping paths are integrated into weakened patches and mapped to an evaluation layer, thus constructing a linkage mechanism for identification, response, interference judgment, and evaluation constraints.

The invention belongs to the technical field of electric power engineering. According to the foundation frost heaving test system and method considering self-control type groundwater supply, at least two detachable cylinders which are arranged in a layered mode are arranged on the upper portion of a water tank of a test soil box, and materials with different water permeability are placed in the detachable cylinders; filter cotton is arranged between the water tank and the adjacent detachable barrels, a water permeable screen is arranged between the adjacent detachable barrels, the top of the detachable barrel on the uppermost layer is sealed through a top low-temperature cold plate, and a bottom heating plate is arranged at the bottom of the water tank; the water pump is located in the water supplementing barrel and connected with the water tank through a water supplementing pipe, a water level sensor in communication connection with the control end is arranged in the water tank, and the control end is used for controlling starting and stopping of the water pump according to a sensing result of the water level sensor so that the liquid level of water in the water tank can be flush with the lower surface of the filter cotton or submerge the lower surface of the filter cotton; according to the invention, the comprehensiveness and accuracy of the frost heaving test of the foundation in the cold region are improved.

The present invention discloses a method and system for determining vegetation coverage based on the protection of groundwater resources. The vegetation coverage is calculated by the following formula: #imgabs0# where P max represents the maximum vegetation coverage; α1 represents the regional precipitation infiltration coefficient under the condition of no vegetation; A, B, and C are constants; a and b are constants. This method first gives the threshold of the regional groundwater recharge amount, combines the vegetation water consumption with the groundwater recharge amount, and gives the appropriate vegetation coverage in the western mining area through the constraint of the groundwater recharge amount threshold, so as to achieve the purpose of coordinating the protection of the mining area's groundwater resources and the restoration of the ecological environment.

The invention belongs to the field of underground water recharge, and particularly relates to an efficient underground water recharge method, which comprises the following steps of: arranging a recharge well penetrating into a target aquifer, arranging a well casing with a water filter in the well, filling a filter material outside the well casing and sealing, and a core system of the efficient underground water recharge method consists of two parts: a plurality of water tanks arranged on the ground, a water outlet of the water tank is communicated with a water inlet of the high-pressure water pump through a pipeline; meanwhile, the lower part of one side of the water tank extends into the tank and is provided with an inert gas inlet pipeline, and the lower side extends to the bottom in the tank and is provided with an ultrasonic generator to jointly guarantee water quality; secondly, the ground around the recharge well is perforated downwards, a plurality of air exhaust pipelines are arranged and extend to the position of a water filter, the tops of the pipelines are communicated and then are communicated with an air inlet of a first vacuum pump, the pipelines are used for efficiently exhausting gas in a water-bearing layer and preventing gas blockage, and gas-phase blockage of recharge water is prevented through water quality and water supply control and active air exhaust; and the recharge efficiency is obviously improved.

The application discloses a kind of multifunctional compound planting system evapotranspiration process dynamic monitoring device and method, lysimeter measuring cylinder is arranged in the upper portion of lysimeter filter layer, soil evaporation barrel and intercropping crop lysimeter barrel are buried in the soil of lysimeter measuring cylinder top portion, soil moisture sensor is connected to the outer wall of one side of lysimeter measuring cylinder, automatic water supply device is connected to the bottom of the outer wall of the other side, with automatic water supply device is located in the same side, groundwater supply device and water level gauge are equipped in the bottom of lysimeter filter layer, the other side is equipped with drain pipe, drain pipe is connected with leakage device, lysimeter filter layer bottom is connected with weighing sensor, drip irrigation belt is arranged in crop row;Based on lysimeter weight, soil moisture, irrigation data, automatic water supply data, groundwater recharge data, drainage data, leakage data and meteorological data, the change of soil storage water quantity is calculated.The application can accurately characterize the evapotranspiration process of compound system.

The utility model relates to the technical field of water source heat pumps, in particular to water source heat pump underground water recharge equipment which comprises a hollow water tank. An ultrasonic liquid level sensor for measuring the water level in the recharge well is mounted on the front side of the bent part of the recharge pipe; a controller is fixed at the inner bottom of the box body; a cover plate is inserted into the slot, and an audible and visual alarm is mounted at the top of the cover plate; under the action of the recharge pipe, underground water can be conveniently recharged into the recharge well; when the water level in the recharge well reaches a set height, the ultrasonic liquid level sensor transmits a signal to the controller, the controller controls the audible and visual alarm to operate, the audible and visual alarm gives out an early warning, and a worker stops recharging underground water in time after receiving the early warning. The situation that the water level in the recharge well continues to rise, and consequently well water overflows can be effectively avoided; by means of the design, underground water can be conveniently recharged into the recharge well, and the situation of overflow in the recharge well can be avoided.

The application discloses a groundwater recharge device for geological subsidence prevention and treatment, which comprises a moving base, a plurality of moving wheels are installed on the lower side wall of the moving base, and a supporting mechanism is arranged in the moving base; a right-angle plate is fixedly connected to the upper side wall of the moving base; a vertical plate fixedly connected to the upper side wall of the moving base is fixedly connected to the inner top wall of the right-angle plate; a recharge tank is connected to the outer side of the vertical plate through a lifting mechanism; a water outlet pipe is arranged on the lower side wall of the recharge tank; a water pump is fixedly connected to the upper side wall of the right-angle plate; a water outlet pipe penetrating through the upper side wall of the recharge tank is connected to the output shaft of the water pump; and an arc-shaped filter screen is fixedly connected to the inner side wall of the recharge tank. The arc-shaped filter screen can intercept impurities, so that large-particle impurities cannot enter the recharge well and cause the well mouth to be blocked; meanwhile, the arc-shaped filter screen is cleaned by a mud scraping plate and is knocked by each ball block, so that the vibration effect of the arc-shaped filter screen is achieved, and the arc-shaped filter screen is prevented from being blocked.

This invention discloses a groundwater recharge inversion system for irrigation and drainage lined canals based on water level monitoring, belonging to the field of water conservancy facilities technology. The invention includes a lining state detection unit for acquiring the lining state of the canal lining surface; a groundwater monitoring unit for setting monitoring wells along the canal according to its location distribution; acquiring the water level of the monitoring wells; obtaining the groundwater level distribution in a local area along the canal based on the water level of the monitoring wells; and an inversion calculation unit for obtaining the relationship between the groundwater level distribution along the canal and the lining state of the canal lining surface, and inverting the groundwater level distribution along the canal based on the relationship between the lining state and the groundwater level distribution in the local area along the canal lining surface. This invention provides a comprehensive and accurate understanding of the groundwater state along the canal.

The application discloses a groundwater recharge system based on bank slope step filtration, which comprises a water interception and distribution unit, a step filtration unit and an infiltration recharge unit. The water interception and distribution unit is composed of a rubber dam and a distribution pipe, the rubber dam can lift the upstream water level, and river water is introduced into the step filtration unit through the distribution pipe; the step filtration unit comprises two upper and lower filtration zones, both of which are double-layer filtration structures, and the bottom filtration layer is embedded with a perforated pipe; filtered water is discharged into the infiltration recharge unit through the perforated pipe in sequence, and the infiltration recharge unit comprises a shallow recharge layer and a deep recharge well. The raised river water is automatically overflowed to the backwater side embankment slope line filtration unit by the rubber dam, the water quality of the recharge source is improved, and the blockage phenomenon caused by recharge can be effectively prevented; the shallow recharge layer and the deep recharge well can be used to consider the recharge of shallow and deep groundwater, and the groundwater recharge efficiency is significantly improved.

The present invention discloses a method for analyzing the groundwater recharge process, which relates to the field of groundwater calculation technology. A rainfall base flow response model is obtained; the rainfall base flow response model is constructed based on the relationship between the river base flow, groundwater utilization, and base flow at the basin outlet formed by large channel preferential flow, soil preferential flow, and soil piston flow; based on the rainfall data and base flow data of the study area, the model parameters of the rainfall base flow response model are solved by genetic algorithm to obtain the target values of the model parameters in the rainfall base flow response model; according to the target values, the water retreat unit lines of the large channel preferential flow, soil preferential flow, and soil piston flow in the study area are determined; the water retreat unit lines are used to describe the groundwater recharge process in the study area. This method can accurately analyze the groundwater recharge process of large channel preferential flow, soil preferential flow, and soil piston flow in the Loess Plateau region.