37 results about "Ground water flow" patented technology

A three-dimensional heterogeneous aquifer horizontal equivalent permeability coefficient multi-scale prediction method based on a residual network comprises the steps that a foundation pit dewatering two-dimensional pressure-bearing steady flow model is constructed, the influence of the size of a lenticular body on foundation pit dewatering flow field disturbance is evaluated, and the resolution ratio of a parameter prediction model grid is determined; based on actual drilling data and transition probability / Markov chain T-Progs, according to multiple deposition types formed by a binary deposition structure, a multi-layer aquifer structure, a coarse-grained deposition structure and a fine-grained deposition structure, a three-dimensional stratigraphic random structure model set is constructed, and three-dimensional stratigraphic section random slices are established; obtaining horizontal equivalent permeability coefficients corresponding to stratigraphic sections in various stratigraphic structures based on the underground water flow numerical model FloPy, and establishing a stratigraphic structure-equivalent permeability coefficient training set based on a neural network; a deep learning model is constructed based on the residual network ResNet50; and training, verifying and testing the equivalent permeability coefficient of the stratum section formed by the binary sedimentary structure, the multi-layer aquifer structure, the coarse grain sedimentary structure and the fine grain sedimentary structure.

The application provides a method for determining inflow hydrograph of urban stormwater inlet, which is in line with actual urban runoff conditions and can effectively reduce the error of calculation results. The urban area is divided into multiple sub-regions according to the road network, and the net rainfall is discharged from the stormwater inlet, and the single stormwater inlet in the sub-region is calculated respectively; the urban surface runoff is calculated by using the comprehensive runoff coefficient method, and the runoff coefficient not greater than 1 is used to represent the runoff after the rainfall is intercepted and lost on the ground; for the rainfall in the small urban area, the ground water flow is in the form of slope flow and shallow concentrated flow; the catchment time is the sum of the two, the slope flow with a flow line not greater than 90m is calculated by using the Manning dynamics method to calculate the surface runoff flow time; after the slope flow stops flowing for 90m, the shallow concentrated flow with a water depth greater than 3cm appears at this time, and the stormwater inlet design flow inflow calculation formula is: Q = F * (P - S) / (T + 90) wherein Q is the stormwater inlet inflow, L / min; F is the average catchment area controlled by each stormwater inlet, m 2 .

This invention provides a water-stopping device, relating to the field of building waterproofing technology. The water-stopping device includes a water-stopping steel plate and a drain pipe arranged along the length of the water-stopping steel plate. The drain pipe has a drain outlet along its length, allowing groundwater that has seeped onto the upper surface of the water-stopping steel plate to flow into the drain outlet. By installing this water-stopping device, the water-stopping steel plate can be used to seal the interface joint between pre- and post-cast concrete. If the water-stopping steel plate fails to stop the water flow, and the seeping groundwater flows from the interface joint between the water-stopping steel plate and the concrete to the upper surface of the water-stopping steel plate, the seeping groundwater will flow into the drain pipe through the drain outlet and then into a nearby sump. This prevents groundwater seeping through the concrete interface joint from leaking onto the basement floor surface, making the water-stopping device an integrated blocking and draining system with multiple lines of water-stopping defense, significantly improving the water-stopping effect at the post-cast concrete joint.

The invention discloses an underwater crack grouting retention rate testing device, and relates to the field of grouting retention rate test.The underwater crack grouting retention rate testing device comprises a supporting assembly and a testing table top fixed to the supporting assembly, a testing box, a water supply box and a grouting box are arranged on the testing table top, and the water supply box is located on the side face of the testing box and communicates with the testing box through a water inlet pipeline; the other side of the testing box is connected with a purified water tank through a drainage pipeline, the purified water tank is communicated with the water supply tank through a water return pipeline, the grouting box is connected with the height adjusting assembly, the side face of the grouting box is connected with a grouting pipe, and the tail end of the grouting pipe is located at the testing box. (1) the height of the grouting box is adjusted through the height adjusting assembly, so that the grouting pressure is adjusted, and the retention rate under different grouting pressures can be met; (2) simulating the underground water flowing condition through a water inlet pump, and adjusting the height of the model to meet the retention rate under different underground water level conditions; and (3) recycling of water is realized by arranging a purification water tank, and the utilization rate of water resources is improved.

The invention discloses an underground water seepage monitoring device which comprises a shell, a heating piece, a heat conduction cylinder, a first temperature sensor, a water flow measuring block, a connecting rod and a control terminal. The heat conduction cylinder is located on the lower side of the heating piece and provided with a measuring position corresponding to the heating piece and close to one end of the heat conduction cylinder in the first direction so as to divide the heat conduction cylinder into a first heat conduction part and a second heat conduction part, the length of the first heat conduction part is larger than that of the second heat conduction part, and the heat conduction cylinder can move up and down relative to the heating piece. The first temperature sensor is arranged on the heat conduction cylinder and corresponds to the measuring position; the water flow measuring block is located outside the shell, is in a rectangular pyramid shape or a quadrangular frustum pyramid shape, is provided with a top end and a bottom end in the first direction and can rotate around the axis of the water flow measuring block. The connecting rod is connected with the heat conducting cylinder and the water flow measuring block, and the first heat conducting part corresponds to the top end; the control terminal is electrically connected with the heating piece and the first temperature sensor; the underground water flow direction and flow velocity can be automatically monitored in situ in real time for a long time, the operation is simple, and the cost is low.

The invention relates to a karst collapse multi-modal early warning method and system based on a space-time fusion attention mechanism, and aims to realize accurate prediction and early warning of a stratum collapse risk through multi-modal data fusion and the space-time fusion attention mechanism. According to the method, firstly, multi-modal data such as horizontal strain, vibration, stratum settlement displacement and underground water flow velocity are collected through a horizontal measuring pipe and a vertical drill hole, and space and time characteristic tensors are constructed; then, a space-time fusion attention mechanism is adopted to distribute weights for different space positions and time points so as to highlight areas and moments which have great influence on the stratum collapse risk; the model extracts space and time features through CNN and LSTM, comprehensively analyzes the risk contribution of environment, stratum structure and physical perception data through a risk operator, and finally generates a risk early warning signal. The method can monitor the change of the stratum in real time and generate early warning, and has the advantages of multi-modal data fusion, space-time weight dynamic adjustment, accurate risk assessment and the like.

A groundwater heat exchanger includes a plurality of heat exchange pipes, a housing and a cable channel. Each of the heat exchange pipes is configured to receive a loop fluid flow. The housing has an interior chamber that contains the heat exchange pipes and defines a groundwater passageway that is configured to receive a groundwater flow. The cable channel is formed on an exterior of the housing and extends along a central axis of the housing. The cable channel includes at least one cable pathway configured to receive one or more cables.

The utility model relates to a waterproof flow guide blind ditch structure at the connecting place of diaphragm wall, it includes flow guide blind ditch main part, flow guide blind ditch main part sets up at the connecting place of diaphragm wall, is used for guiding the ground water flow, prevents the ground water and accumulates at the connecting place, the utility model discloses a flow guide blind ditch is established, effectively guides the ground water flow, prevents the ground water and accumulates at the connecting place, reduces the seepage risk, improves the overall waterproof performance of diaphragm wall, guarantees the engineering quality. The application still has the advantages such as convenient construction, low cost, can satisfy the efficient and economic demand of modern underground engineering construction.

The invention relates to the technical field of site investigation, in particular to a multi-depth stratified sampling well building method which comprises the following steps: S1, drawing a circle on a polluted site, and drawing a first sine curve along the flow direction of underground water of the polluted site; s2, drawing a branch line and a second sine curve along the wave crest or wave trough direction of the first sine curve; s3, well building is carried out with the circle center, the wave crest or wave trough of the first sine curve and the intersection point of the second sine curve and the second x axis as well building point positions, and well building is completed; according to the well building method, the main line is arranged in the underground water flow direction with the circle center of the polluted site as the starting point, the branch lines extend in the vertical direction, a three-dimensional space monitoring network is formed, diffusion paths of pollutants in the main flow direction and the lateral direction can be synchronously tracked, and the well building method is particularly suitable for accurate description of pollution plumes in a heterogeneous aquifer.

The application discloses a mechanism for preventing underground aquifer heat storage medium migration, and relates to the technical field of agricultural facility heating, comprising a heat well and a plurality of stability wells arranged around the heat well in a circumferential direction, the adjacent stability wells are connected through water pipes, the water pipes are filled with water and the air is discharged, the water level in the stability well is higher than that in the high water level area after water injection, and the water outlet at the lower end of the water pipe is always below the ground water level line. The application can reduce heat loss caused by underground water flow of the underground aquifer cross-season heat storage mechanism, and improve the heat storage effect.

The invention discloses an underground water flow direction, speed and mass flow monitoring method. Underground water flow direction logging or hydrological logging is a technical means for obtaining underground water flow information through a drill hole or a monitoring well. An array sensor is located in a well logging; the array sensor comprises a cylindrical shell, a heating body, a temperature sensor and an orientation sensor; the size of the cylindrical shell is the same as that of the inner wall of the logging well; the heating body is arranged at the central position of the cylindrical shell; the bottom surface of the cylindrical shell is uniformly divided into N fan-shaped sub-areas along the circumference by taking the heating body as the center, and each sub-area is provided with a temperature sensor; an orientation sensor is arranged on each temperature sensor and is used for monitoring the azimuth angle of the temperature sensor; data collected by the array sensor is transmitted to the controller, and the flow speed, the water flow direction and the total mass flow rate of water flow are obtained through calculation. According to the invention, the measurement difficulty of a heterogeneous aquifer and a thin aquifer is overcome, and wider and more accurate monitoring of the aquifer environment is realized.

The application discloses a groundwater sampling flow control system, which comprises an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module and a portable integrated box. The measurement range of the ultrasonic flow detection module is 0-20 L / min, and the precision control is ±0.1%. The flow rate and flow are calculated by detecting the time difference of the forward and reverse flow propagation of sound in the groundwater fluid. The flow control module cooperates with a sampling pump to realize accurate flow regulation and control. The data processing and storage module can calculate the cumulative flow, store historical data and support USB export. The display module realizes the digital real-time display of the flow rate, cumulative flow, battery capacity and other information. The system realizes accurate control and measurement of the groundwater sampling flow, avoids sample pollution, is portable and easy to operate, can record the well washing state, and meets the national standard requirements for VOC water sample collection.

This utility model discloses a pressure relief and repair structure for cut-off points in basement slabs, comprising a cast-in-place body and a pressure relief mechanism. The cast-in-place body is formed within a cut-off groove in the basement slab. The pressure relief mechanism includes a pressure relief pipe and a filter head. The pressure relief pipe is embedded within the cast-in-place body, with its lower end located below the basement slab and its upper end located above the basement slab. The filter head is positioned at the lower end of the pressure relief pipe. The beneficial effects of this basement slab cut-off point pressure relief and repair structure are: by setting up the pressure relief mechanism, groundwater can be discharged through the pressure relief pipe during the solidification process of the cast-in-place body. This avoids the erosion of the solidifying concrete by groundwater under water pressure, as is common in traditional methods, allowing the concrete to solidify normally, resulting in a denser internal structure and improved basement slab repair effectiveness.

The present disclosure relates to a groundwater circulation well group and a circulation mode control method therefor. The groundwater circulation well group includes at least two multi-filter-layer groundwater circulation wells, multiple pumping / injection assemblies, and a control module. The at least two multi-filter-layer groundwater circulation wells are arranged in order along a groundwater flow direction. A wellbore of each multi-filter-layer groundwater circulation well is separated by at least two first packers to form three pumping / injection sections, and each pumping / injection section is internally provided with at least one pumping / injection assembly for water pumping / injection. The water pumping and / or water injection of the pumping / injection assembly is controlled by the control module. A pipe wall of each pumping / injection section is provided with a perforated water pumping / injection screen section.

The underground water drip irrigation temperature increasing mechanism comprises two layers of drip irrigation pipes and a water and fertilizer integrated pipe, and the two layers of drip irrigation pipes are located on the two sides of a first thin film; the water-fertilizer integrated pipe is located at a crop root; the constant-temperature pipe is arranged on one side of crops, underground water flows through the constant-temperature pipe and transmits heat into a cavity of the second film through the constant-temperature pipe, and under the condition that the temperature of the underground water is stabilized at 12-15 DEG C, the first water pump conveys the underground water into the heat preservation water tank, and the second water pump conveys the underground water in the heat preservation water tank to one end of the flow dividing valve. The diverter valve is communicated with the drip irrigation pipe and the water and fertilizer integrated pipe to realize drip irrigation. The device has the advantages that underground water is conveyed into the heat preservation water tank through the first water pump, the underground water in the heat preservation water tank is conveyed to one end of the flow dividing valve through the second water pump, the flow dividing valve is communicated with the drip irrigation pipe and the water and fertilizer integrated pipe, and drip irrigation temperature increasing operation is achieved; through the arrangement of the triangular valves and the elastic sleeves, the water permeable holes can be prevented from being blocked, and the drip irrigation efficiency is guaranteed.

The application is a system for realizing water saving and reducing water field non-point source pollution based on intercepting and storing underground water, which is characterized by: the system is composed of underground water interception structure and underground water gate regulation structure, the underground water interception structure is located at the end of drainage channel and the downstream end of underground water flow direction, and is buried below the ground surface, used for intercepting and storing underground water, at least one underground water gate regulation structure is arranged in the underground water interception structure, the upper end of the underground water gate regulation structure is above the ground surface, which is beneficial to operation, the lower end of the underground water gate regulation structure is below the ground surface, the water inlet is communicated with the water outlet end of the underground water interception structure, the water outlet of the underground water gate regulation structure is communicated with the drainage channel, used for regulating underground water level and preventing secondary salinization. The system can form an underground barrier to effectively intercept and store the originally lost underground return water, so as to achieve the purpose of intercepting and discharging underground water, and improve the utilization rate of irrigation water.

The application discloses a kind of filling new material PRB permeable reaction wall test device, it is related to permeable reaction wall test technical field, including base;Drive bin, it is fixed in one side of base, and its inside fixed drive cylinder body;Fixed plate, it is fixed in the upper end surface of base, and it is set in the side of base close to drive bin;Bottom plate, it is fixed in the upper end surface of base, located in the side of fixed plate, and its inside fixed has adjusting cylinder body;Support piece, at least two, are all fixed on bottom plate;Adjusting assembly, it is fixed in the side of fixed plate away from drive bin;Adjusting bin, it is fixed in the side of adjusting assembly away from fixed plate, and is fixed by one of support piece, the inner wall of adjusting bin is opened with two groups of conversion grooves symmetrically;Drainage bin, it is slidably arranged on another support piece, and located in the side of adjusting bin away from adjusting assembly;Clamping assembly, it is installed on drainage bin;The application can accurately simulate the actual situation of groundwater flow, improve simulation accuracy.

The application discloses a kind of wellbore skin permeability coefficient determination method and system, it is related to hydrogeology technical field, the method is simulated by experimental device well nearby groundwater flow field, adjusts stable water tank height to simulate different water head difference, obtains the actual flow rate data of wellbore and aquifer under multiple working conditions;Three-dimensional steady flow numerical model including the zonal seepage equation and corresponding boundary conditions of aquifer region and wellbore skin region is established, and the characteristics of three-dimensional flow field near well are restored;Numerical model consistent with experimental parameters is constructed, iterative adjustment wellbore skin permeability coefficient, determine the permeability coefficient of wellbore skin region when the relative error between simulated wellbore flow rate and actual flow rate in wellbore is smallest;Through physical experimental device and numerical simulation and inversion subsystem work cooperatively, both can adjust stable water tank height to realize multiple working condition experiment, also can avoid the problem that traditional method geology scene is disjointed, data error is big, cost is high, to complete wellbore skin permeability coefficient determination.

The application discloses a groundwater remediation device and method, and the device comprises multiple-stage funnel-door type permeable reaction walls arranged at intervals.

The invention discloses a cross-scale underground water simulation and prediction method based on a graph neural network, and belongs to the crossing field of environmental science and artificial intelligence. In order to solve the problems that an existing underground water simulation method is high in calculation cost, poor in adaptability to complex boundary conditions and lack of cross-site migration capacity, the method comprises the steps that firstly, a training data set containing multi-scale grids and multi-type boundary conditions is generated; further constructing a graph convolutional network used for flow field prediction and a graph neural network model which is used for pollutant concentration field prediction and introduces an attention mechanism, and performing training by mapping a numerical simulation grid into graph nodes and edges; and finally, directly applying the trained model to a new site to quickly predict an underground water flow field and a pollutant concentration field of the new site. According to the method, the calculation efficiency and the cross-scale migration capability are remarkably improved while the precision is ensured.

The application discloses a kind of water power and pollutant dual response type nano repair materials and its application;Nano repair material has core-shell-outer layer structure, core provides repair function;Inner shell layer can perceive and respond target pollutant concentration, regulate active release;Outer shell layer can respond groundwater flow rate (shear force), regulate particle migration behavior.Nano repair material of the application can realize "low pollution area stable migration, high pollution area efficient activation", solve the problem of short migration distance of traditional nano repair material, non-target consumption fast, especially suitable for repairing complex groundwater flow affected organic pollution plume.The simultaneously provided repair method and repair system realize the controllability and intelligentization of repair process.

This utility model relates to the field of bridge steel technology, specifically to anti-corrosion steel structure bridge steel, including symmetrically arranged bridge decks, with crossbeams symmetrically arranged between the two bridge decks. Drip grooves are symmetrically opened on the bridge decks to effectively guide rainwater away from the bridge deck surface, reducing the risk of corrosion. Several piers are arranged below the bridge decks. The bridge deck surface is coated to protect the bridge deck from corrosion damage. Anti-corrosion skirts are installed on the outer bottom of both ends of the piers to block ground water flow and soil erosion, forming a stable whole with the piers to jointly bear the load and external erosion. The arc-shaped outer wall guides water flow smoothly around the piers, reducing impact and accumulation, and lowering the risk of corrosion and wear. Deflector plates are fixedly installed on the outer walls of both ends of the piers, located above the anti-corrosion skirts. The downward-sloping design of the outer wall of the deflector plates effectively guides rainwater, soil, and other impurities to the outside, preventing them from entering the gap between the anti-corrosion skirts and the piers, thus reducing the risk of corrosion.

This invention discloses a groundwater monitoring device based on array thermal conductivity flow measurement. Groundwater flow direction logging is a technical means of obtaining groundwater flow information through drilling or monitoring wells. This invention includes a cylindrical shell, a heating element, a temperature sensor, an azimuth sensor, and a controller; the cylindrical shell has the same dimensions as the inner wall of the logging well; the heating element is located at the center of the cylindrical shell; the bottom surface of the cylindrical shell is uniformly divided into N sub-regions along the circumference, with the heating element as the center, and each sub-region is equipped with a temperature sensor; an azimuth sensor is set on each temperature sensor to monitor the azimuth angle of the temperature sensor. This invention provides a groundwater monitoring device based on array thermal conductivity flow measurement, overcoming the measurement difficulties of heterogeneous aquifers and thin aquifers, significantly reducing the hysteresis effect in the measurement process, and achieving more extensive and accurate monitoring of the aquifer environment.

The utility model discloses a groundwater flow direction measuring appearance relates to groundwater detection equipment technical field. The utility model discloses a base, the bottom surface of base and the surface of support are provided with moving assembly, the top surface of base is provided with storage assembly, the inner wall fixedly connected with the baffle of storage assembly, the inner wall bottom surface fixedly connected with the butt block of storage assembly, the top surface of base is provided with battery, the surface of base is provided with measuring assembly, the surface of support is provided with control panel, the surface of support is provided with solar panel. The utility model discloses the moving assembly of moving wheel and push handle composition, can easily push the equipment shift to different monitoring point, adapts to the field, different site operation demand, improves equipment mobility. Storage assembly utilizes the baffle partition, butt block and supports, can neat receipt measuring assembly scattered parts, such as probe etc.

The invention discloses a foundation pit open type precipitation water level and streamline calculation method considering pile group water blocking. The method comprises the steps that basic parameters of a foundation pit boundary range, a water-bearing layer, a pile group and a precipitation well are obtained; treating the pile as an impermeable medium, and treating the dewatering well as a point source so as to establish an underground water seepage analysis model; carrying out series expansion on water flow change caused by dewatering well water pumping and pile group water blocking by utilizing a complex variable function; taking a pile as an inner boundary and infinity as a far field boundary, and calculating a coefficient of series expansion through an iteration method according to boundary conditions; according to the coefficients obtained through calculation, the underground water level and the underground water flow direction of any point in the plane are determined, and an equal water level graph and a streamline graph are drawn. According to the method, the calculation efficiency is higher while the pile foundation water blocking effect is considered.

The application discloses a groundwater telemetry system and a self-calibration method, and belongs to the field of groundwater monitoring. The system comprises a terminal machine arranged at the wellhead of a monitoring well and a water level gauge hung in the monitoring well. The water level gauge comprises a shell, a pressure sensor arranged in the shell, a reference calibration module and a sensor calibration module. A water inlet hole for groundwater inflow is arranged on the shell at the position corresponding to the pressure sensor. The terminal machine is organically linked with the reference calibration module, the sensor calibration module and the pressure sensor, forming a complete monitoring and calibration closed loop. The reference calibration module automatically updates the well depth reference, eliminating the water level calculation deviation caused by silt impurities and the like. The sensor calibration module corrects the pressure sensor drift in situ, ensuring the detection accuracy. The two modules work cooperatively, realizing long-term, continuous and accurate groundwater monitoring without manual intervention, and fully meeting the needs of engineering construction safety control, water resource fine management and other scenes for groundwater monitoring.

The invention relates to the technical field of groundwater pollution remediation, and discloses a photocatalytic degradation-based optical fiber lead-in type groundwater green low-carbon remediation system, which comprises a lens lighting unit, an optical fiber catalytic degradation unit and a hydraulic driving unit, the optical fiber catalytic degradation unit is arranged in a groundwater pollution plume range in a non-excavation mode, the hydraulic driving units are arranged on the two sides of the optical fiber catalytic degradation unit, and the hydraulic driving units drive polluted groundwater to flow through the optical fiber catalytic degradation unit; one end of the optical fiber catalytic degradation unit extends out of the ground and is fixedly connected with the lens lighting unit; the lens lighting unit collects sunlight and guides the sunlight into the ground through the optical fiber catalytic degradation unit, and the underground water achieves photocatalytic reaction in the optical fiber catalytic degradation unit. The method only depends on natural light for restoration, no agent needs to be added, the optical fiber catalytic degradation unit can adopt non-excavation construction technologies such as horizontal directional drilling, and the method has the advantages of being small in construction disturbance, large in action range, environmentally friendly and low in carbon.

The invention belongs to the technical field of buried pipe geothermal heating, and relates to an arrangement method and a design method for a middle-deep layer variable-depth buried pipe group, the buried pipe group comprises not less than three buried pipes, the depth range of the buried pipes is 2000-4000 m, and the buried pipes are arranged according to different depths in the dominant underground water flow direction or the thermal load distribution direction; the depth arrangement mode of the buried pipes comprises shallow, medium, deep, medium and shallow, and deep, medium, shallow, medium and deep; the medium-deep layer buried pipes are designed into a plurality of three-dimensional heat exchange structures which are different in depth and are arranged in a staggered mode in the same area, so that heat interference is dispersed, the heat recovery effect is improved, temperature field distribution can be remarkably improved, cold accumulation can be relieved, and the sustainability and stability of long-term operation of a buried pipe group are effectively improved.

A geothermal heat pump system includes a main heat exchanger, a borehole that extends in a vertical direction through an aquifer, a ground loop and a pump. The main heat exchanger is configured to exchange heat between a ground loop flow and a heat distribution system. The ground loop includes a groundwater heat exchanger, an input pipe and an output pipe. The groundwater heat exchanger is contained within the borehole and includes heat exchange piping. The input pipe delivers the ground loop flow from the main heat exchanger to the heat exchange piping. The output pipe delivers the ground loop flow from the heat exchange piping to the main heat exchanger. The pump drives a groundwater flow in a horizontal direction that is transverse to the vertical direction across the heat exchange piping. Heat exchange occurs between the ground loop flow and the groundwater flow.