214 results about "Hydrogeology" patented technology

The invention is suitable for the technical field of hydrogeology, and provides a high-dimensional permeability field inversion method based on Monte Carlo sampling and information entropy, and the method comprises the steps: learning a mapping relation between a model parameter and a model response from a large amount of high-dimensional data through a deep neural network; through coupling Monte Carlo stochastic simulation, monitoring stations are arranged based on a multi-objective optimization algorithm of information entropy, more reliable observation data are provided for a parameter inversion process, and finally, the inversion precision of a permeability field is improved. According to the method, the high-dimensional parameter inversion problem in the heterogeneous aquifer is solved, and good calculation efficiency and recognition precision are shown. Specifically, a layout scheme of monitoring stations is optimized, errors of inversion results are reduced by efficiently utilizing monitoring data, and accuracy and reliability of inversion are improved; inversion of the high-dimensional permeability field in the heterogeneous aquifer is achieved, technical support is provided for the problem of complex solute transport simulation, and wide practical application prospects are shown.

The invention relates to the field of hydrogeology, and discloses a mine pit water inflow prediction method suitable for cohesive soil coverage, which comprises the following steps: special drilling: performing monitoring drilling on a mine, and simultaneously respectively adopting cohesive soil undisturbed samples at different positions to obtain cohesive soil data; monitoring data: respectively observing corresponding data of the drill holes by using a monitoring device; a group hole water pumping test is carried out on the mine to obtain a mine underground water flow field form, observation data are collected in real time in the water pumping process, and water pumping test data are obtained; and water release test: carrying out cohesive soil compaction water release test on the cohesive soil undisturbed sample in a high-pressure state by adopting special equipment. The cohesive soil data are obtained through special drilling, the foundation is laid for follow-up analysis, the dynamic state of the cohesive soil is mastered in real time through data monitoring, the basis for studying the characteristics and change rules of the cohesive soil is built by combining the data with the special drilling data, the interaction between underground water and the cohesive soil is studied through a water pumping test, and key support is provided for prediction.

The invention discloses a device and a method for measuring the flow direction and the flow velocity in a hole, and belongs to the technical field of water conservancy, hydrogeology and engineering geology. According to the measuring device, a plurality of conductivity probes are arranged on the lower edge of an upper tank base, and an electronic compass is arranged in each conductivity probe and used for measuring the flow direction of underground water in a hole; the bottom of the upper tank body is connected with the lower tank body, and a certain distance is reserved between the upper tank body and the lower tank body; the lower tank top cover is provided with a nozzle, and the lower tank base is provided with a water inlet hole. The technical problems that in the prior art, the flow direction and the flow speed of underground water in a micro-scale range in a single drill hole cannot be measured, and vertical turbulent flow interference of the underground water cannot be avoided in the measuring process are solved.

The invention belongs to the technical field of hydrogeology and intelligent control, particularly relates to an underground water level dynamic regulation and control method and system based on digital twinning, and aims to solve the problems of one-sided perception, static model, extensive decision and single feedback of traditional regulation and control. The method comprises the following steps: collecting multi-source monitoring data and constructing a data set through cross-scale calibration; constructing a multi-field dynamic coupling digital twinborn model, and introducing a dynamic coupling coefficient to deduce a risk evolution field; calculating a variable coefficient of the risk value of each physical field based on the risk evolution field, and generating a comprehensive risk value; and matching the risk threshold to generate a deep and shallow layered regulation and control instruction. The multi-field dynamic coupling breaks the static limitation of the model, the dynamic weight based on the variable coefficient ensures that the regulation and control decision can preferentially respond to the key physical field with high absolute risk level and large spatial fluctuation, and the full-region visual tracking and accurate management and control of the underground water level and the geological risk are realized.

The invention relates to the technical field of hydrogeology, in particular to a karst underground water system characteristic analysis method and system. The method comprises the following steps: identifying an X-shaped joint controlled by a structural composite part through hydrogeological survey and geophysical exploration; plane distribution of underground water is determined, the position of an underground water main runoff zone on the plane is determined through drilling verification, and vertical feature extraction analysis is conducted on the underground water main runoff zone; analyzing the concentration and distribution characteristics of pollutants in the underground water, and identifying a pollutant transport channel; according to the vertical characteristics, multiple layers of water outlet sections in the vertical direction of the aquifer and relative water separation sections between the water outlet sections are determined; constructing a three-dimensional model of the hydrogeological structure, simulating underground water flow and pollutant migration, and predicting dynamic change characteristics of a future underground water system according to a simulation result; an on-site monitoring network is constructed, long-term monitoring is carried out, and the risk of the underground water system is identified. According to the technical scheme, the comprehensiveness and accuracy of karst underground water system analysis can be improved.

The invention relates to the field of hydrogeology and environmental engineering, and discloses an underground water anomaly identification and early warning method based on a multi-time-sequence spatial-temporal change rate field, which comprises the following steps: acquiring underground water monitoring data, constructing a multi-time-sequence underground water level burial depth space field, constructing a spatial-temporal change rate field, acquiring a comprehensive saliency map, intelligently identifying a dynamic descending area of underground water, and performing early warning. Identifying and classifying the dynamic descending area, quantifying the dynamic index of the dynamic descending area, and performing graded early warning; historical data of known groundwater abnormal events are obtained, and adaptive adjustment is carried out on the corresponding adaptive threshold parameters in the previous steps. According to the scheme, a static water level field is converted into a dynamic space-time change rate field, the form change trend of the water level field of the whole area can be obtained, and the problem that only single-point water level change can be obtained in a traditional monitoring method is solved; graded early warning based on different development modes of the dynamic descending area is realized; the method does not depend on geological parameters difficult to obtain, and is simple and easy to implement and low in cost.

The invention relates to the field of groundwater resource management and protection, and discloses an AI intelligent groundwater level dynamic prediction system based on multi-source data fusion, which comprises a data acquisition module used for acquiring multi-source data to break through the limitation of a single data source and cover various factors influencing the change of the groundwater level; and the data fusion module adopts a multi-criterion decision analysis method and a multi-agent decision mechanism, analyzes the influence weight of each factor on the underground water level under different scales through weighted linear combination, and determines a decisive factor of a specific area. Multi-source data of meteorology, hydrogeology, human activities, building construction and the like are integrated through the data acquisition module, the influence weights of different factors on the underground water level can be comprehensively quantified in combination with a multi-criterion decision analysis method and a multi-agent decision mechanism of the data fusion module, the limitation of a traditional single data source is changed, and the underground water level can be accurately measured. Driving factors of underground water level changes are comprehensively captured, and a foundation is laid for accurate prediction.

The invention discloses a method for calculating leakage flux of a disjointed river, which relates to the field of hydrogeology, and comprises the following steps of: constructing a coupling model integrating river water level, sediment seepage control equation and unsaturated zone seepage under sediment according to the characteristics of riverbed sediment of the disjointed river; according to the method, a suspended waterlogged zone is found to exist under a riverbed, a suspended waterlogged zone migration equation is analyzed by utilizing a coupling equation, the leakage flux of the disjoint river at different moments is invented according to the suspended waterlogged zone equation, and the leakage calculation problem of the disjoint river under the condition of different river water depths can be accurately calculated by the method. The method overcomes the problem of poor precision of leakage estimation by using the upstream and downstream section river flow difference at present, and enriches and develops the theory and method of river bed leakage dynamics.

The invention relates to a riverside zone range defining method and system, and relates to the technical field of hydrogeology, and the method comprises the following steps: obtaining the landform characteristics, hydrogeologic structure, river channel form, soil property, vegetation distribution characteristics and other index data in a drainage basin; monitoring water level dynamic change data of the river and the riverside groundwater, analyzing a conversion relation between the river and the groundwater, and dividing different river-groundwater conversion modes. A two-dimensional profile river-underground water conversion kinetic model perpendicular to the river channel is established, and the conversion flux of the river and the underground water at the river bank and the moisture contribution amount extending to the two sides of the river bank by different distances are calculated. And determining an effective influence space range of river-underground water conversion based on the water contribution amount of a set threshold value. On the basis of the influence space range of river-underground water conversion, various index data obtained in the first step are superposed, and the river basin riverside zone range is defined.

The invention discloses a granite residual soil slope section structure optimization method which is applied to the technical field of slope prevention and control. Comprising the steps that S1, geological drilling is conducted on a slope to be excavated, hydrogeological conditions are investigated to obtain relevant data of the slope, and the relevant data comprise stratum lithology, a slope body structure, an underground water level and a rainfall condition; s2, measuring physical and mechanical properties of stratum lithology according to the obtained side slope geological drilling core sample; s3, according to the height of the side slope, the stratum lithology, the land use red line and the surrounding environment, design parameters of the side slope stages, the slope ratio of each stage of the side slope, the height of each stage of the side slope and the platform width of the side slope to be excavated under different working conditions are designed; s4, obtaining slope stability coefficients corresponding to different working conditions based on S2 and S3, and obtaining an optimal section structure design working condition; s5, performing protection and retaining design on the slope to be excavated according to the principles of technology feasibility, economy, reasonability and ecological environmental protection on the basis of the step S4, obtaining a slope stability coefficient, and obtaining a protected slope section structure; and S6, on the basis of the S5, in combination with hydrogeology and meteorology, drainage design of the slope to be excavated is carried out, and finally an optimized slope section structure is obtained. According to the method, the long-term stability of the slope can be improved, better environmental adaptability and ecological friendliness are provided, engineering protection measures are reduced, and the construction and maintenance cost is reduced.

The invention provides a complex geological structure mine area grouting transformation effect evaluation method, and relates to the technical field of grouting effect evaluation. The method specifically comprises the following steps that mine geology and hydrogeology characteristics, the space superposition relation and the water yield property of a water-bearing layer and a water-resisting layer, the range of a main coal mining layer, a construction outline map, ground stress analysis, a grouting layer position, grouting hole arrangement and grouting parameters are determined; carrying out fracture effective area analysis, and determining the fracture effective area distribution condition; carrying out fracture effective area water conductivity analysis; carrying out correlation analysis on the effective fracture area and the grouting space; and grouting effect evaluation is carried out, and a grouting effect evaluation model is constructed. According to the technical scheme, the problems that in the prior art, geologic structures and fracture development are not fully considered, the relation between the geologic structures and the fracture development and grouting parameters is not established, and grouting does not have engineering practicability are solved.

The invention provides a method for removing spartina alterniflora in a lagoon face environment, and belongs to the technical field of spartina alterniflora governance, and the method comprises the following steps: S10: data collection: collecting, sorting and analyzing hydrogeological data, tide water conditions and spartina alterniflora distribution conditions of a governance area; s20, dividing a treatment area: dividing the treatment area into a high tidal flat area, a middle-low tidal flat area and other areas through treatment according to field survey data and hydrogeology in combination with the current situation environment of the treatment area; and S30, a treatment scheme is formulated in a targeted manner. The step S30 comprises the following steps: S310, for a high tidal flat area, a'deep burying method 'is adopted for block and ridge treatment. According to the method, for the treatment of spartina alterniflora, different treatment environments can be combined, treatment is carried out according to an established method, quality monitoring is carried out in the treatment process, surveying and lofting are carried out according to different process treatment areas before treatment, colored flags and other obvious markers are arranged for identification, the different process treatment areas are distinguished, and patrol inspection is carried out regularly after treatment is completed; and the found problem is rectified in time.

The invention discloses a karst underground river type water source area supply area delimiting method, and relates to the technical field of karst hydrogeology. Comprising the following steps: acquiring basic information of a water source and preprocessing the basic information to form an initial information set; determining an initial boundary of a supply area of the water source based on a water point type, a position and surface watershed information of the water source; comprehensively analyzing and correcting to determine an uncertain section after first correction; performing field investigation and checking and reducing on the uncertain section to obtain an uncertain section after second correction; the method comprises the following steps of: performing third correction on the water source area by adopting geophysical prospecting, drilling and underground water tracing tests, checking nearby key pollution sources, determining a final boundary of a water source area supply area, dividing supply subareas according to stratum lithology, karst development degree and the final boundary of the supply area, and determining geographical boundaries of the supply area and the subareas by combining permanent marks. And finally completing demarcation of the supply area. According to the method, high-precision supply area demarcation can be completed, and the method is suitable for development, utilization and protection of karst underground river system water sources with different development degrees.

The invention discloses a tunnel water inrush and mud inrush catastrophe evolution stage division method, which belongs to the technical field of tunnel engineering, and comprises the following steps: S1, investigating geology and hydrogeology of a tunnel excavation section; s2, geophysical prospecting and advanced drilling testing are conducted on the unexcavated section of the tunnel; s3, geological conditions and hydrogeological conditions of a tunnel excavation section are obtained according to the tunnel body information; s4, acquiring water gushing characteristics of the excavated section; s5, analyzing hydrochemical characteristics and water-rock interaction characteristics of the tunnel gushing water; s6, the supply elevation and supply sources of the tunnel gushing water and the supply proportion of each supply source are obtained; s7, rock mass density characteristics of the unexcavated section are obtained; s8, geological conditions and water outlet conditions of the non-excavated section are obtained; and S9, comprehensively judging and dividing a water inrush and mud inrush catastrophe evolution stage of the tunnel. According to the method, multiple information indexes are combined, the tunnel gushing catastrophe evolution stages can be judged and recognized, the catastrophe evolution stages are scientifically divided, and the accuracy of the judgment result is improved.

The invention discloses an underground water level change prediction method and system based on machine learning, and relates to the technical field of hydrogeology, and the method comprises the steps: carrying out the standardization processing of multi-source time series data, obtaining a standardized multivariable time series data matrix, and constructing a supervised learning sample set; inputting the underground water level sequence in the supervised learning sample set into a physical information guided variational mode decomposition network; decomposing the underground water level sequence into K intrinsic mode component sequences and residual term sequences through a loss function of physical driving consistency constraint; and for each of the K intrinsic mode component sequences, dynamically assembling a differentiable simulator from the differentiable simplified physical simulator basic library, and carrying out cooperative training by taking approximation to each intrinsic mode component sequence and overall reconstruction of the original water level sequence as targets to obtain K completely trained assembled differentiable simulators. According to the method, a reliable visual prediction result is generated through multi-simulator collaborative deduction and uncertainty quantization.

The invention discloses a multi-scale loess foundation stability prediction method and system, a storage medium and equipment, and belongs to the technical field of geophysics and hydrogeology, and the method mainly comprises the steps that a high-density electrical method is used for collecting resistivity data of a loess foundation in a monitoring area; performing inversion on the resistivity data in different time periods to obtain different inversion profiles; gridding the resistivity data of the loess foundation in the monitoring area, comparing the difference of resistivity distribution among different inversion profiles, and screening out a high-risk area; and performing kernel density estimation and distribution difference analysis according to the screened high-risk area to obtain a low-resistivity data change trend, and predicting the collapse risk according to the low-resistivity data change trend by combining a multi-scale breakpoint detection technology. Based on the high-density electrical method, various data analysis technologies are combined, and efficient, economical and sustainable loess foundation stability monitoring and prediction are achieved.

The invention discloses a fractured stratum groundwater pollution source positioning method based on deep learning enhanced inversion, and relates to the field of pollution source positioning, and the method comprises the steps: constructing a space-time concentration response data set containing complex physical field characteristics based on hydrogeology and pollution source parameters, and training a deep learning substitution model according to the space-time concentration response data set; the complex groundwater solute transport process is efficiently approximated, so that the problem that traditional numerical simulation consumes too long time is solved. On the basis, an integrated inversion framework is constructed, time sequence concentration data observed on site is combined with a substitution model, and global optimization is carried out by utilizing a genetic algorithm. Not only can a nonlinear high-dimensional parameter space be processed, but also a space-time evolution rule in observation data can be fully excavated, finally, synchronous accurate inversion of pollution source three-dimensional coordinates, dynamic release history and key hydrogeological parameters is achieved, and the defects that a traditional method is low in recognition rate and poor in timeliness under complex geological conditions are effectively overcome.

A portable flow velocity tester for hydrogeology comprises a lower half floating ball, an upper half floating ball is arranged above the lower half floating ball, transverse mounting grooves and longitudinal mounting grooves are formed in the faces, close to each other, of the upper half floating ball and the lower half floating ball, a driving plate is arranged in the transverse mounting grooves, a plurality of tooth grooves are formed in the top face of the driving plate, and the tooth grooves are communicated with the longitudinal mounting grooves. The tooth groove is connected with the speed measuring mechanism, a first connecting rope is arranged on the left side of the driving plate, and the first connecting rope is fixedly connected with the driving plate. The full-mechanical flow velocity tester is designed and thrown into water, the water velocity can be obtained by observing the extending length of the velocity measuring rod, and the full-mechanical flow velocity tester does not contain any electronic component such as a sensor, and is low in manufacturing cost and convenient to operate. The problems that an existing flow meter is mostly integrated with electronic components such as a sensor, the manufacturing cost is high, and damage is easily caused by water inflow are effectively solved.

The invention relates to the technical field of coal mine hydrogeology and environmental engineering, and discloses a coal mine groundwater flow-water quality coupling simulation method under mining disturbance condition, which comprises the following steps: step 1, mining disturbance area hydrogeology basic data acquisition: field investigation, drilling sampling, field test and long-term monitoring are carried out to obtain mining disturbance area hydrogeology basic data; the method comprises the following steps: acquiring landform, stratum lithology, geological structure, initial hydraulic gradient, porosity, initial permeability, initial pollutant concentration and hydrogeochemical parameters of a research area, and collecting a coal mining scheme, rock stratum movement observation data and fracture development characteristic parameters; according to the method, the dynamic hydrogeological parameter model is constructed, the water flow-water quality coupling control equation is established, numerical solution and accurate calibration are combined, and accurate simulation of the underground water flow field and the water quality migration process under the mining disturbance condition can be achieved.

The utility model relates to the field of hydrogeology, in particular to a layered water stop device for hydrogeology drilling, which comprises a layered water stop pipe body, a component for mounting internal water stop, a first layered cylinder, a second layered cylinder, a first water stop plate, a second water stop plate, a second water stop plate, a third layered cylinder and a fourth layered cylinder, and the first layered cylinder is arranged in the layered water stop pipe body and is used for taking water and stopping water in a first layer; and a first damping reset rod is fixedly mounted above the leakage groove plate. The first layering cylinder, the leakage groove plate, the first damping reset rod, the adjusting sleeve, the abutting strip, the second layering cylinder and the water stopping cylinder are arranged, according to the current layering water taking and water stopping requirements, a water taking device only needs to abut against the adjusting sleeve, the adjusting sleeve is pressed downwards to enable the abutting strip to be inserted into the leakage groove plate, and therefore the first layering cylinder can be rotated; the side, provided with the leakage holes, of the first layering cylinder is attached to the hole of the layering water stop pipe body, water permeates from the outside, or water is directly injected from the inside to the outside, and the upper-layer layering water injection and water taking work can be completed.

The utility model discloses a hydrogeology water pumping test device, relates to hydrogeology technical field, including bottom plate, water storage tank, water pump and water pumping pipe, water storage tank and water pump are respectively fixed connection on the upper surface of bottom plate, the water pumping pipe is fixed connection on the end of water pump departing from water storage tank, a supporting seat is fixedly connected to the bottom of the water pumping pipe, a stopwatch is fixedly connected to the side wall of the water storage tank, a water drain valve is fixedly connected to the bottom of the water storage tank, and a measuring seat is fixedly connected to the top end of the water pumping pipe. The external water pipe is connected with the water pumping pipe, the water pump and the water pumping pipe can pump underground water needing to be pumped into the water storage tank, when water flows along the water pumping pipe, the induction plate can be pushed to rotate along the fixed rod, the movable rod is made to move along the first scale line, and the flow speed and water pressure of water flow can be visually observed conveniently.

The invention relates to the technical field of environment monitoring and big data analysis, and discloses a soil environment quality evaluation method based on big data. The method comprises the following steps: fusing measured data of soil heavy metals with multi-source heterogeneous data such as remote sensing, terrain, land utilization, hydrogeology and the like; a space-attribute joint constraint depth generation network is constructed, an encoder of the space-attribute joint constraint depth generation network extracts multi-scale features, an attribute physical constraint module is embedded into a convection-dispersion equation to model a heavy metal migration mechanism, and a decoder outputs a high-fidelity concentration field; and dividing four pollution risk grades according to national standards, and generating an evaluation diagram. Through data driving and physical mechanism collaborative modeling, the pollution boundary depicting precision is improved, the prediction error under the low sampling density is reduced compared with a traditional method, the recall rate of a high-risk area is increased, and reliable support is provided for precise soil treatment.

The present invention relates to the field of hydrogeology and discloses a method for predicting the water inflow of mine pits suitable for being covered by cohesive soil, which comprises the following steps: special drilling: monitoring boreholes are drilled in the mine, and undisturbed samples of cohesive soil at different positions are taken respectively, so as to obtain cohesive soil data; data monitoring: using monitoring devices to respectively observe the corresponding data of the boreholes; pumping test: a group of borehole pumping tests are carried out on the mine to obtain the shape of the groundwater flow field of the mine, and at the same time, observation data are collected in real time during the pumping process to obtain pumping test data; water release test: a special device is used to carry out a high-pressure compaction water release test on the undisturbed sample of cohesive soil. Obtaining cohesive soil data through special drilling lays a foundation for subsequent analysis. Data monitoring grasps the dynamics of cohesive soil in real time and combines with the data of special drilling to build a basis for studying its characteristics and variation laws. The pumping test studies the interaction between groundwater and cohesive soil and provides key support for prediction.

The present application relates to a kind of coal face water inflow prediction method, system, electronic equipment and medium, specifically related to the field of mine hydrogeology and mining engineering.The method includes determining the water level difference of aquifer and adjacent aquifer and the mining simulation model of mining area according to the drilling column chart of mining area;According to the mining simulation model, the fracture height and the horizontal distance of the fracture distance of pumping test aquifer are obtained by coal seam mining simulation;According to the fracture height and horizontal distance, the drilling position and rock sample of pumping test are obtained;The vertical permeation speed is obtained by using triaxial servo instrument to operate the rock sample with surrounding pressure;According to the vertical permeation speed, the constant flow of pumping test is obtained;According to the drilling position, constant flow and water level difference, the drawdown of stable aquifer is obtained by non-complete well pumping test;According to the drawdown of stable aquifer, the water inflow is obtained.The present application makes the prediction result of water inflow of mining area more accurate, and reduces cost.

The invention discloses a multi-period non-stationary multi-hydrological variable spatial valuation method, and relates to the technical field of hydrogeology. Comprising the steps of obtaining a univariate time sequence; combining the univariate time sequences of all observation stations in the drainage basin to obtain a multivariate random time sequence; calculating a long-term average level of each observation station through a space-time random function to obtain a long-term trend; subtracting the multivariable random time sequence of each observation station from the corresponding long-term trend to obtain a random residual error; according to the random residual error, determining a covariance function and a variation function between any two observation stations in the drainage basin; and on the basis, a multi-period non-stationary multivariable space valuation model is constructed by combining a multivariable Kriging model theory, and multi-hydrological variable valuation is performed on the drainage basin to be measured. According to the invention, internal correlation between variables can be revealed, and the prediction precision and reliability can be effectively improved.

The invention relates to a polluted site ecological environment damage and recovery evaluation method. The method comprises the following steps: S1, constructing a multi-dimensional underground water ecological environment recovery capability indication index system coupling hydrogeology, pollution degree and recovery technical elements; s2, carrying out quantitative evaluation on a space tracing-source analysis-migration-degradation process of underground water pollution; s3, establishing an underground water ecological environment natural recovery capability evaluation and visualization platform based on multiple factors, multiple dimensions and multiple targets; and S4, constructing a site-region groundwater ecological environment damage quantitative model. According to the method, the groundwater damage evaluation efficiency is improved, the accuracy of the evaluation result is guaranteed, and support can be provided for the ecological environment and judicial departments to carry out groundwater damage compensation and litigation.

The invention relates to the technical field of hydrogeology, and particularly discloses a geologic surveying and mapping underground water filtering and sampling method, which comprises the following steps of: establishing a time-space consistent characteristic data set by acquiring optical characteristic parameters, electrochemical response signals, suspended matter distribution characteristics and pressure pulsation data of an underground water body in real time; through multi-scale fluctuation feature extraction and synchronism analysis, hydrogeological feature indexes and change rules thereof are identified; constructing an underground hydrogeological characteristic profile taking the sampling depth as a reference, performing matching analysis in combination with a typical hydrogeological mode pedigree, determining representativeness and reliability levels of sampling points, and finally generating a sampling optimization scheme and a quality control report; according to the method, closed-loop control from data acquisition to quality evaluation is realized, the problem of insufficient data representativeness and reliability caused by chemical disturbance and lack of systematic quality control in a traditional sampling method is solved, and the accuracy of underground water sampling data and the reliability of geological interpretation are improved.

A hydrogeology layered sampling device, including equipment frame, wheel, tooth pressure plate, internal thread cylinder hand wheel, internal thread cylinder, guide wheel shaft, guide wheel, motor frame, drive shaft, the lower part of the equipment frame is fixedly connected with the wheel, the rear part of the equipment frame is fixedly connected with the push rod, the front part of the equipment frame is fixedly connected with the angle frame, the inside of the angle frame has an angle shaft slot, the side part of the frame is fixedly connected with the angle shaft, the angle shaft slot is adapted to the angle shaft, the angle shaft slot is connected with the angle shaft, the angle shaft rotates in the angle shaft slot, the front part of the angle shaft is fixedly connected with the hand wheel, the rear part of the angle shaft is fixedly connected with the pointer, the rear part of the angle frame has a scale, the pointer corresponds to the scale position, the side part of the angle frame has a sliding slot, and the side part of the angle shaft is fixedly connected with the screw rod seat.

The utility model relates to the technical field of underground water level observation, and discloses a hydrogeological exploration underground water level observation device which comprises a water level gauge body and a mounting frame connected to the outer wall of the water level gauge body. According to the water level gauge, the protective cover is arranged on the water level gauge body, the water level gauge body which is not used can be protected by the protective cover, the elastic cushion layer is arranged on the inner side of the protective cover, impact force generated when the protective cover is collided can be effectively absorbed, damage is effectively avoided, and the water level gauge body cannot be accidentally collided and damaged when being carried outdoors; the protective cover is rotationally connected, when the water level gauge body is used, opening and closing can be achieved only in a rotating mode, and operation is easy and practical.

This invention relates to the field of hydrogeology, specifically to a groundwater sampling device for hydrogeology. The device comprises multiple vertically arranged splicing rods, each with a threaded hole at its top and a screw head fixedly connected to its bottom. The screw head engages with the adjacent threaded hole. A circular hole is formed on the top surface of a sleeve plate, which slidably engages with the outer wall of the splicing rod. A motor box is located on one side of the sleeve plate. In this invention, the splicing rods are sequentially spliced ​​and inserted into a well. A welded metal bracket secures the splicing rods to the wellhead. The sleeve plate is lowered to the aquifer using an automatic winch. An electric push rod moves the sampling mechanism, allowing it to drill into the aquifer through the well pipe's filter holes. The sampling mechanism then samples the water flow within the aquifer, improving the accuracy of sampling a single aquifer. After sampling, a filling mechanism can backfill the aquifer with soil, facilitating sampling operations for users.