27 results about "Groundwater depth" patented technology

This invention provides a groundwater safety monitoring method and system based on GRACE satellite data, belonging to the field of groundwater safety monitoring technology. The method includes: collecting multi-source data of a target area; separating non-groundwater signals from the multi-source data to obtain anomaly sequences of groundwater storage in the target area; calculating the difference between the anomaly sequence of groundwater storage in the target area and the natural baseline groundwater storage change sequence to determine the annual rate of change of groundwater storage caused by human activities in the target area; and conducting a two-dimensional safety risk early warning based on the determined annual rate of change of groundwater storage caused by human activities, combined with the dynamic shallow groundwater depth simulated by the SPHY model. This invention achieves multi-angle and multi-level comprehensive identification and early warning of regional groundwater safety risks, significantly improving the scientific nature and practical application value of the monitoring method.

The application discloses a kind of slot wall collapse simulation device, including box, water inlet hole plate, water outlet hole plate, cover plate, air connection water inlet pipe, displacement sensor;Multiple pore water pressure sensors;Cover plate is installed above first area, and is used to close the top of first area;Air connection water inlet pipe is communicated with first area inside;Multiple pore water pressure sensors are placed in the inside of soil sample in second area;Displacement sensor is installed in simulation tank.The device can simulate the migration of water flow in soil sample under different groundwater depths by pressurization, and then cause the process of soil sample collapse;It can test the stability of soil layer conditions in construction area under the action of groundwater, quantitatively evaluate the porosity and water erosion resistance of soil sample;At the same time, it can also approximately infer the depth of possible hole wall collapse, for engineering construction reference, to judge whether soil sample reinforcement is needed and propose appropriate soil sample reinforcement method, reduce the impact of hole wall collapse on project progress.

The invention provides a new energy power station planning method and system, and the method comprises the steps: obtaining the static characteristics of a plurality of candidate points, the static characteristics including the seismic activity frequency, the altitude, the gradient and the underground water burial depth; calculating a static abnormal score of each candidate point based on the static features of the candidate points, and performing a first round of screening on all the candidate points according to the static abnormal scores to obtain remaining candidate points; obtaining dynamic characteristics of each residual candidate point, wherein the dynamic characteristics comprise wind speed, sunlight intensity, environment temperature, environment humidity and precipitation; and performing a second round of screening on all the remaining candidate points based on the dynamic feature of each remaining candidate point and the static abnormal score of each candidate point to obtain a final point location. According to the method, multi-dimensional quantitative evaluation of new energy power station site selection is realized through a static and dynamic dual screening and clustering optimization mechanism, and site selection scientificity and engineering reliability are remarkably improved.

The invention provides a three-dimensional salt controlling and discharging method and system for moderate and severe saline-alkali soil, and the method comprises the steps: laying a concealed pipe salt discharging and water discharging system at the bottom of the section of the to-be-improved coastal moderate and severe saline-alkali soil for discharging soil leaching salt and underground water; a salt barrier layer is constructed at the designated depth of the middle of the soil profile and used for blocking salt in deep soil from moving upwards; a ground surface covering layer is arranged on the ground surface and used for weakening salt surface accumulation driven by soil moisture evaporation. Through the synergistic effect of three layers, three-dimensional blocking and efficient discharging of soil salt are achieved, the problems that salt control through a single measure is not lasting and prone to repetition are effectively solved, and the method is particularly suitable for improvement of coastal moderate and severe saline-alkali soil with deep underground water burying depth and high mineralization degree.

The application discloses a kind of foundation concrete freeze-thaw cycle test system, including simulation box, top cover is provided on the upper end of simulation box, test piece positioning device is arranged in the middle lower part in simulation box, and pressure device is also oppositely arranged above positioning device;Simulation box one end side surface middle lower part one side is connected with water supply pipeline with switch valve, and water supply pipeline other end is connected with water storage tank;Still include the refrigeration evaporator being arranged in the upper portion of simulation box, refrigeration evaporator is connected with the compressor outside simulation box and forms refrigeration cycle system;Still include the electric heating tube being fixed in the inner surface of the top cover of simulation box;Still include groundwater depth adjustment simulation device for realizing groundwater depth adjustment simulation in simulation box.The application can more realistically and reliably simulate freeze-thaw soil environment, obtain the freeze-thaw durability performance of foundation concrete structure under the action of groundwater infiltration;It can be better used for building foundation safety evaluation guidance, improve freeze-thaw environment building safety performance.

The invention belongs to the technical field of mine engineering, and particularly discloses a method for constructing a groundwater model influenced by snow melting supply based on CMA-RA / Land data. The method comprises the following steps: acquiring a CMA-RA / Land data set of a research area and creating data extraction points; a meteorological variable time sequence corresponding to each data extraction point is extracted from the data set, and spatial interpolation and unit conversion are carried out; determining a source sink item based on the meteorological variable time sequence and in combination with an underground water burial depth condition; establishing a groundwater model, setting initial and boundary conditions, taking the source sink item as an input parameter and setting condition combination, and simulating a groundwater dynamic process by adopting the groundwater model; and based on the simulation result, an SHAP method is adopted to analyze and output characteristics of the underground water model, and the underground water model influenced by snow melting supply is obtained according to analysis and optimization of the underground water model. The method has the characteristics of easiness in data acquisition, clear physical significance of parameters and strong certainty of simulation results.

The utility model relates to the technical field of underground water level measurement, in particular to a device for measuring underground water burial depth, which comprises a universal meter and a substrate, a meter pen of the universal meter is connected with a twisted-pair measuring rope, an underground water liquid level is arranged on the bottom side of a well wall of a motor-pumped well, the twisted-pair measuring rope comprises an inner core, the inner core is a copper conductor, and the inner core is connected with the substrate. The outer side of the inner core is provided with a middle layer, the middle layer is a polyformaldehyde layer, the outer side of the middle layer is provided with an outermost layer, the outermost layer is a thermal shrinkage molding layer, the outer side of the outermost layer is calibrated with scales, the tail part of the twisted-pair measuring rope is a conical lead body, the interior of the twisted-pair measuring rope is connected with a copper conductor, and the exterior of the twisted-pair measuring rope is kept not in contact with the copper conductor. According to the utility model, the characteristics of polyformaldehyde are mainly utilized to change the existing common measuring rope, the strength, toughness, rigidity and the like of the common measuring rope body are changed, the measuring rope is easier to pass through obstacles and transmit radial force during field measurement, and the measurement is easier to succeed.

The invention discloses an underground water fixed-depth sampling device, which belongs to the technical field of sampling, and comprises an outer cylinder, a counterweight is slidably arranged in the outer cylinder, a sampling cylinder is arranged at the lower end of the counterweight, and the sampling cylinder adopts a telescopic pipe structure; a sampling barrel is arranged at the lower end of the sampling barrel; a filter head is arranged at the bottom of the sampling barrel; a sampling cavity is formed between the upper part of the counterweight and the outer cylinder; a water sample outlet pipe is arranged in the center of the upper end of the outer cylinder, and the top of the counter weight penetrates out of the water sample outlet pipe through a rope and then is connected with a lifting assembly; sealing mechanisms are arranged at the upper and lower ends of the outer cylinder. The underground water fixed-depth sampling device adapts to complex well conditions through sealing mechanisms at the upper end and the lower end of the outer barrel to prevent sample pollution, a filter head anti-blocking stabilizing device at the lower end of the sampling barrel, a counterweight and the outer barrel are in sliding fit, cleaning is easy, cross contamination is reduced, the representativeness and accuracy of underground water samples are finally guaranteed, and reliable data support is provided for related work.

The present application relates to the field of hydrogeology, and more particularly to a surface water-groundwater interaction determination method and system, comprising obtaining temperature data, electric potential field data and water body gravity stratification sampling data at different depths within a drainage basin; mapping the temperature data to a temperature manifold and extracting temperature stratification characteristics; inverting a hydraulic gradient field based on the temperature stratification characteristics and the water body gravity stratification sampling data; calculating water flow momentum based on the hydraulic gradient field and the electric potential field data; determining interaction coefficients between different water bodies within the drainage basin based on the hydraulic gradient field, the water flow momentum and groundwater depth data; a hydraulic gradient inversion method based on a temperature manifold is established by introducing differential geometry theory, achieving high-precision mapping from a temperature field to a hydraulic gradient field; a coupling mechanism of a temperature field-hydraulic gradient-water flow momentum is established, achieving organic integration of multi-physical field data, and providing a scientific basis for water resources management in the Yellow River Basin.

The application discloses a groundwater infiltration simulation control method for rock-soil environment simulation test, characterized in that one side of a simulated soil in a test area in a simulation box is separated from an independent water collecting area by a movable retaining wall, groundwater simulation water is first connected to the water collecting area, then the retaining wall is lifted upwards to expose a required interval of the groundwater simulation depth, and water flows into the simulated soil from the interval according to the exposed height, thereby forming the required groundwater simulation depth. The application can better control and realize the simulation of the groundwater infiltration into the soil, better assist the simulation and reduction of the soil environment in the soil freeze-thaw test, and improve the simulation accuracy and application range of the soil freeze-thaw test.

The invention belongs to the technical field of agricultural water conservancy and water-saving irrigation, and provides a winter wheat daily crop coefficient calculation method. According to the method, key meteorological factors influencing the evapotranspiration of typical crops in each growth period of the Huaibei plain are extracted through a geographic detector method, a winter wheat growth period crop coefficient model based on meteorology and underground water burial depth is constructed, and the crop evapotranspiration process under different underground water burial depths is simulated. According to the technical scheme provided by the invention, the crop evapotranspiration simulation precision can be improved, a scientific basis is provided for efficient utilization of regional agricultural water resources and daily evapotranspiration simulation, and meanwhile, the blank of considering the underground water level burial depth influence in an existing crop evapotranspiration empirical model is filled.

The utility model discloses a kind of groundwater depth measuring devices, including rack, winding wheel, folding mechanism, collapsible support, meter counter, pulley and measuring rope, winding wheel is rotatably installed on rack, collapsible support includes pulley mounting support and meter counter wheel mounting support, it can be unfolded and stowed under the drive of folding mechanism, meter counter is installed on the second connecting arm of meter counter wheel mounting support, pulley is installed on the first connecting arm of pulley mounting support, measuring rope is led out from winding wheel and sequentially passes through meter counter and pulley, the head end of measuring rope is equipped with plumb bob. The utility model is convenient to fold the meter counter and pulley support that extend, thereby reduce storage space, avoid the process of moving transportation meter counter and pulley support knock.

This invention discloses a method, apparatus, medium, and equipment for predicting shallow groundwater depth, relating to the field of shallow groundwater depth prediction technology. The method includes acquiring monthly remote sensing data of the area to be measured; extracting multiple feature variables from the remote sensing data; constructing multiple shallow groundwater depth prediction models for each month of the area to be measured based on multiple machine learning algorithms; combining the multiple feature variables to determine different sets of feature variables; training each shallow groundwater depth prediction model based on these different sets of feature variables to optimize the model parameters of each model and determine the optimal shallow groundwater depth prediction model for each month; inputting the feature variable to be measured into the optimal shallow groundwater depth prediction model corresponding to the month in which the feature variable is located to obtain the predicted groundwater depth.

The present application belongs to the technical field of hydrogeology, and discloses a prediction method for spatial distribution of groundwater recovery force and uncertainty thereof, comprising: calculating groundwater recovery force by using groundwater performance index and recovery force index; and quantitatively analyzing the relationship between the groundwater recovery force and nine kinds of groundwater control factors, i.e., lithology, topography, slope, distance to river, soil, canal system density, permeability coefficient, groundwater depth and land use, based on GIS technology combined with DS model to generate a groundwater recovery force zoning map. The present application can reliably predict the spatial distribution of groundwater recovery force. The present application can not only output the support degree of the evidence layer to the prediction result through the belief function, but also can quantify the uncertainty of the prediction result to reflect systematic error and random error, so that the generated spatial prediction result is accurate and reliable.

The invention discloses a spatio-temporal dynamic determination method and device for an ecologically suitable underground water level in an arid region. The method comprises the following steps: acquiring surface elevation, meteorology, hydrology, soil, geology, vegetation ecology and human activity and social economic data of a research region; calculating the maximum rising height and spatial distribution of capillary water above the diving surface according to the soil data; determining main vegetation types and root distribution characteristics thereof according to the vegetation ecological data; according to the maximum rising height of capillary water, vegetation types and root system distribution characteristics, determining a buried depth threshold value and spatial distribution of ecologically suitable underground water; constructing a groundwater numerical model of the research area, and simulating to obtain groundwater levels in different stress periods; the simulated underground water level is converted into underground water burial depth, space-time comparison is conducted on the underground water burial depth and an ecologically-suitable underground water burial depth threshold value, and ecologically-suitable underground water levels of different regional grids in different stress periods are determined. According to the method, the spatio-temporal dynamic refined evaluation and prediction of the ecologically suitable underground water level on the regional scale are realized.

The application discloses a kind of community structure water source driving cause-effect relationship analytical method, device, equipment and medium.It includes: obtaining soil water sample, plant water sample, precipitation water sample and groundwater water sample in target sample plot;The layered treatment of soil water sample obtains multilayer soil water sample and soil moisture content;The target sample plot is divided to obtain groundwater depth zoning data;The species number, species proportion and simpson diversity of annual plant and perennial plant are calculated as community structure characterization index;Test to obtain the isotopic characteristic data of each water sample, and input bayesian mixture model to calculate utilization ratio;Key water source factor is identified by redundancy analysis;The cause-effect relationship influence path is analyzed using partial least squares path model, and the complete cause-effect chain of community structure variation and ecological risk early warning basis are output.The present application realizes shallow groundwater grassland plant water source utilization quantification and water source driving cause-effect relationship analysis, and provides technical support for ecological early warning and water resources development.

The invention discloses a portable underground water burial depth automatic monitoring device, and belongs to the technical field of underground water monitoring, the portable underground water burial depth automatic monitoring device comprises a pressure-bearing shell, a main pressure sensor, an atmospheric pressure sensor and a temperature sensor are integrated in the pressure-bearing shell, and the main pressure sensor is communicated with an external water body through a pressure guide hole to collect water body static pressure; the atmospheric pressure sensor collects ambient pressure through the independent sealing cavity, and the temperature sensor is used for measuring water temperature; the spiral flow guide cover is detachably arranged on the outer side of the pressure-bearing shell in a sleeving mode, and a spiral flow guide groove is formed in the inner wall of the spiral flow guide cover and spirally extends in the axial direction of the pressure-bearing shell. The spiral flow guide cover is detachably arranged on the outer side of the pressure-bearing shell in a sleeving mode, the spiral flow guide grooves in the inner wall of the spiral flow guide cover guide underground water to form spiral flow, particle impurities are automatically separated and discharged through centrifugal force, sediment is prevented from being deposited to block pressure guide holes or be attached to the surface of the shell, passive self-cleaning is achieved, and the manual maintenance frequency is remarkably reduced; and the field long-term unattended monitoring requirement is met.

This invention discloses a method for optimizing blasting design parameters, relating to the field of engineering blasting technology. The method involves acquiring rock hardness coefficient and groundwater depth data for the current project area through a pre-established blasting archive, extracting information on topographic slope influence and soil looseness from historical blasting cases, and training a deep learning feature extraction model based on historical blasting cases in the archive. The trained deep learning feature extraction model is then used to encode the rock hardness coefficient, groundwater depth, topographic slope influence, and soil looseness, forming a current geological feature set and a historical geological feature set. This blasting design parameter optimization method can significantly improve the efficiency and accuracy of blasting design parameter optimization, reduce reliance on manual intervention, improve engineering construction safety and efficiency, and possess the ability to quickly adapt to and self-optimize for new project geological conditions.

The invention discloses an evaporation limit burial depth determination method considering an unsteady-state water flow system, which is particularly suitable for an underground water shallow burial area with topographic change, and comprises the following steps: step 1, constructing a lakeside zone two-dimensional profile conceptual model and training the lakeside zone two-dimensional profile conceptual model; 2, performing numerical simulation through the trained lakeside zone two-dimensional profile conceptual model to obtain a simulation result; and step 3, post-processing the simulation result to obtain a groundwater evapotranspiration-groundwater burial depth relation curve and evaporation limit burial depth. The method has the characteristics that the sampling accuracy and the acquisition efficiency are improved, tedious model construction and calculation are not needed, topographic change factors are considered, the influence of an unsteady-state water flow system is included, the distribution of the soil moisture content better conforms to a field scene, and the method is suitable for large-scale popularization and application. The large soil moisture content error and the flux error of an unsteady-state water flow system caused by rapid drop of the underground water level are eliminated.

This application relates to the field of groundwater monitoring, and in particular to a multi-parameter groundwater depth determination device. The device includes an integrated template on which a water level gauge, a thermometer, a conductivity meter, a pH meter, and a GPS positioning device are respectively installed. These components are modularly integrated into the template. A main control unit is mounted on the template, and the main control unit is connected to the water level gauge, thermometer, conductivity meter, pH meter, and GPS positioning device via a corresponding data transmission bus. A cable encoder and a depth-determining float are also installed on the template, and the float is lowered via a guide rod. The purpose of this application is to provide effective support for practical production work such as groundwater pollution prevention and control and ecological restoration.

The invention discloses an underground water refilling method based on flood diffusion and flood irrigation, and the method comprises the steps: selecting a utilization region suitable for the implementation of flood diffusion and flood irrigation from candidate regions according to a plurality of preset comprehensive evaluation indexes, the comprehensive evaluation indexes comprise a riverway longitudinal slope, a flood period water level uplift characteristic, a diffusion area surface slope, a terrain continuity index, a surface layer or shallow layer permeability coefficient, an underground water burial depth, a diffusion area controllable boundary proportion and a safe overflow condition index; a drainage facility is arranged on a river reach bank slope corresponding to the utilization area, and multiple stages of diversion units are arranged in the utilization area in the flood diffusion direction to distribute and guide the flow direction of the flood entering the utilization area; in the boundary area of the utilization area, the flood diffusion range is controlled based on the natural terrain and / or the artificial structure, and a safety overflow channel is arranged and used for discharging redundant flood in order when the flood flow exceeds the stagnant storage capacity of the utilization area. The flood retention time can be prolonged, and the flood infiltration efficiency is improved.

The present application relates to water and soil simulation analysis technical field, specifically relates to a kind of slope infiltration and stability analysis method, medium and equipment under double rainfall algorithm, method includes the following steps: with saturated moisture content, initial moisture content and groundwater depth to describe water-holding property parameter A;Introduce water-holding property parameter A, deduce the empirical formula of soil moisture content, obtain the slope moisture content distribution model after rainfall;Rainfall process is divided into two stages of complete infiltration and incomplete infiltration, obtain the segmented expression of rainfall infiltration rate;According to the law of conservation of rainfall, the change relationship of wetting front depth with rainfall time is derived;According to the change relationship of wetting front depth with rainfall time, the safety factor of slope at a certain rainfall moment is calculated.The present application realizes the high-precision simulation of slope instability process induced by heavy rainfall by introducing water-holding property parameter fitting soil moisture content formula, rainfall segmented infiltration analysis, double rainfall calculation method, so as to carry out slope disaster early warning.

This invention discloses a groundwater depth-based sampling device, comprising a support base with two sets of symmetrically rotatably mounted support wheels at both ends of the base's bottom; a transmission sleeve rotatably mounted on the support base, with a feed rod slidably mounted inside the sleeve and aligned with its axis; two guide rods symmetrically fixedly mounted on the upper part of the support base outside the transmission sleeve, with a T-shaped lifting platform slidably mounted between the two guide rods; the upper end of the feed rod is rotatably mounted on the end of the lifting platform away from the two guide rods; the upper ends of the two guide rods are jointly fixedly connected to a horizontal mounting plate, and a sampler is detachably mounted on the lower end of the feed rod. This invention avoids the mixing of soil water at different depths during the traversal of non-target layers and the upward extraction process of traditional sampling devices, significantly improving the depth representativeness of the sample and the authenticity of the test data.

The invention relates to the technical field of water resource management, and particularly discloses an underground water burial depth prediction and sustainability evaluation method based on multivariable and Transform models. According to the method, various variable data influencing underground water in a region are fully considered, a high-dimensional feature tensor is generated after each variable data is downscaled, an underground water burial depth prediction model is constructed based on the multivariable data, and a segmented error correction strategy is adopted to correct a prediction result to obtain the predicted burial depth. Obtaining the actual burial depth based on the built burial depth and reserve change fitting curve, and achieving the prediction of the underground water burial depth. Meanwhile, a new sustainable comprehensive evaluation index GSI is also constructed to comprehensively reflect the stability and sustainability of the underground water system and the system imbalance risk in a certain time in the future.

This invention relates to the field of railway subgrade design, specifically to a railway subgrade design method and apparatus based on a rule engine. The method includes acquiring basic engineering data of the railway subgrade design section, including slope height, soil type, cut and fill type, and groundwater depth; performing rule matching processing on the basic engineering data using a preset design rule library to obtain candidate design schemes; calculating multi-dimensional indicators based on the candidate design schemes to obtain evaluation indicator information corresponding to each candidate design scheme; performing weight adaptive configuration processing on the evaluation indicator information corresponding to each candidate design scheme based on the basic engineering data to obtain an evaluation indicator weight vector; and performing multi-objective optimization decision processing based on the evaluation indicator weight vector and the evaluation indicator information to obtain the railway subgrade design scheme. This invention comprehensively improves the intelligence level and decision quality of railway subgrade design.

The invention discloses an underground water fixed-depth sampling device for geological exploration, and relates to the technical field of geological exploration, the underground water fixed-depth sampling device comprises a box body, the bottom of the box body is fixedly provided with a plurality of self-locking trundles, the bottom of the inner cavity of the box body is fixedly provided with an electric telescopic rod, and the top end of the electric telescopic rod is fixedly connected with a top cover. According to the underground water fixed-depth sampling device for geological exploration, self-locking trundles are used for driving the box body to move, the sampling mechanism can be stored in an inner cavity of the box body, the device can be conveniently moved, and during sampling, an electric telescopic rod is used for driving a top cover to move upwards, and the top cover is used for driving the sampling mechanism to move out of the inner cavity of the box body; the sampling seat moves downwards into underground water by releasing the rope on the winding drum, the downward moving depth of the sampling seat is controlled by using the depth graduated scale on the rope, in addition, the sampling seat is provided with a plurality of sampling pipes, the plurality of sampling pipes can descend into a well at one time to sample underground water with different depths, and the working quality is good.