48 results about "Groundwater flow" patented technology

The invention relates to the field of hydrology and water resource management and karst hydrodynamics, and discloses a karst basin coupling hydrology model prediction method, which comprises the following steps: S1, collecting and standardizing multi-source heterogeneous monitoring data of a karst basin; s2, constructing a hydrological model for dynamic coupling of surface runoff, fracture seepage and a pipeline network; s3, performing global optimization on the multi-dimensional hydrological parameters by adopting a hybrid intelligent optimization method; s4, performing iterative correction on the model based on a multi-level verification system; and S5, outputting a hydrological prediction result and generating disaster early warning information. By adopting a dynamic adjusting technology of karst area underground river and surface water flow network joint modeling, multi-karst water-containing medium characteristic analysis and integration of underground river and surface water system response characteristics, the problems that a traditional method cannot accurately predict underground water flow and flow velocity, and is difficult to deal with complexity of a karst water system, lack of data and the like are solved.

The invention relates to the technical field of water pollution traceability, and discloses an underground water pollution traceability system based on simulation data, and the system comprises a data collection module which collects real-time data of an underground water monitoring well, soil sampling points and underground water monitoring equipment, and forms a multi-source heterogeneous database; the three-dimensional modeling module is used for constructing a layered geologic body three-dimensional model based on the drilling data, the geological section and the remote sensing image; and the numerical simulation module is used for solving an underground water seepage equation and a pollutant migration equation by adopting a finite difference method of GPU parallel acceleration on the basis of the constructed layered geologic body three-dimensional model. Multi-source monitoring data are accessed in real time through the data acquisition module, online dynamic calculation of an underground water flow field and pollutant migration is achieved in combination with the GPU accelerated numerical simulation module, and the efficiency is effectively improved compared with traditional offline analysis.

The present disclosure provides a method for measuring flow velocity of multilayer groundwater using distributed optical fiber with point-source active heating, comprising: setting and optimizing field test parameters; conducting a background temperature monitoring test; performing a point-source active heating distributed temperature measurement test, including conducting multiple rounds of heating tests; denoising the obtained multi-point source thermal plume attenuation signal data of the groundwater; searching for the peak value of temperature-permeability curve based on an automatic multi-scale peak search algorithm; performing secondary processing on the peak data; estimating the groundwater flow velocity. The method of the present disclosure solves the problem that the existing groundwater flow velocity measurement technology cannot simultaneously measure multiple points and multiple layers, and it can avoid groundwater contamination during the measurement process.

The invention discloses a construction method of an assembly type vibration isolation trench. The method comprises the following steps: firstly, designing and prefabricating a vibration isolation trench unit according to construction site conditions, underground water flow and vibration isolation requirements, including site analysis, size material determination, simulation optimization and quality inspection; before construction, field survey is carried out, topography and geology are covered, underground pipeline detection and vibration source analysis are carried out, the excavation path and depth are determined, and field preparation is made. And then digging a trench by using special equipment according to the design, controlling trench wall parameters and carrying out acceptance inspection. And then gravel and an anti-seepage film are sequentially laid at the bottom of the groove, and a drainage facility is additionally arranged according to needs so as to install a vibration isolation layer. The prefabricated units are lifted, adjusted and connected, then light materials are filled, then fine sand and geotechnical cloth are covered, and soil is recovered. And finally, adjusting and optimizing according to a result through vibration and acoustic testing. According to the method, through multiple layers of vibration isolation materials, firm connecting pieces and strict testing, the vibration isolation effect and stability are remarkably improved, and an effective scheme is provided for engineering vibration isolation.

The invention relates to the technical field of collaborative traceability, in particular to a soil-groundwater multi-medium pollutant collaborative traceability method, which comprises the following steps: synchronously collecting a soil-groundwater conversion sample at an oxidation-reduction interface in a diving surface fluctuation zone of a polluted site, and recording three-dimensional coordinates of a sampling point and a groundwater dissolved oxygen threshold value; detecting valence state change of pollutants in the conversion sample, identifying a morphological transition marker caused by mutation of a medium environment, and generating an interface transition feature set comprising a marker concentration gradient; and based on the concentration gradient direction of the interface transition feature set, in combination with underground water flow velocity field data, reversely tracking a pollutant migration path, and outputting a pollution source position coordinate and a dominant conversion medium type. According to the method, the migration vector module value difference, the form transition amplitude response difference and the path distance attenuation effect are considered, the position of the pollution source is calculated through weighted reverse integral, and the adaptability of the traceability algorithm to a complex interface multi-source pollution scene is remarkably enhanced.

The invention belongs to the technical field of tunnels, and particularly relates to a treatment method for a building door tunnel penetrating a karst underground river reach, which comprises the following steps: step 1, multi-source geophysical prospecting fusion investigation: aiming at the tunnel karst underground river reach and the range of 500m around the tunnel karst underground river reach; the method comprises the following steps of: delineating a karst abnormal area by adopting semi-aviation transient electromagnetism; screening a strong corrosion area by adopting a depression analysis method; verifying parameters of the abnormal area through surface drilling and coring; identifying surface hydrology, lithology and seepage data characteristics through unmanned aerial vehicle-mounted high-resolution multispectral and thermal infrared cooperative remote sensing; karst water dynamic conditions including underground water flow velocity, flow direction and permeability coefficient, corrosion evolution characteristics including cavern forming time and expansion rate, and key physical and mechanical parameters including cavern filler porosity, permeability coefficient, surrounding rock integrity coefficient, uniaxial compressive strength, elastic modulus and Poisson's ratio are obtained. According to the treatment method for the building door tunnel to penetrate through the karst underground river section, the karst space characteristics are clearly presented through the arrangement of the treatment method for the building door tunnel to penetrate through the karst underground river section.

The invention discloses a heterogeneous water-containing medium physical model construction and verification method, and belongs to the technical field of underground water flow and pollutant transport rules. The method comprises the steps of setting a simulation model; sand samples are collected on site for permeability coefficient determination, and a mean value and a variance are calculated; generating a gridding permeability coefficient field based on a direct Fourier transform algorithm; accurately filling quartz sand in a simulation device according to the parameter field to form an initial physical model; a three-in-one verification system of physical experiment-ERT in-situ monitoring-numerical simulation is adopted for verification and correction, and finally a physical model capable of truly reproducing field heterogeneous characteristics is constructed. Compared with a traditional method adopting a simple lenticular body to approximate heterogeneity, the method is more suitable for the space variability of the actual underground water-containing medium. According to the three-in-one verification system provided by the invention, multi-dimensional verification of model precision is realized, and a new technical normal form is provided for research on a migration mechanism of pollutants in a heterogeneous medium.

The present invention discloses a thermal tracer test device and method for determining the comprehensive hydrogeological conditions of an aquifer. The thermal tracer test device comprises a water storage system, a medium tank, a heating system, and a distributed fiber optic data acquisition system. The device has a simple structure and is intelligent and convenient to operate. The heating system can be used to excite a transient or continuous linear heat source. The distributed fiber optic data acquisition system monitors water pressure and temperature changes at various locations in real time, allowing for the study of comprehensive hydrogeological parameters such as groundwater flow rate and direction, permeability, thermal diffusivity, heat capacity, and thermal conductivity. The heating system and distributed fiber optic data acquisition system can be used for both indoor and field tests, offering simple operation, high data accuracy, and strong practicality.

The present invention discloses a method for controlling the stability of the surrounding rock of a water-rich soft rock roadway through filling and water control. First, collect the geological and hydrogeological information and the law of mine pressure manifestation in the area of the water-rich soft rock roadway, and complete the work such as water exploration and drainage and determination of the cross-section shape before roadway excavation. Then, use the method of long grouting anchor cables + short hollow anchor bolts to anchor and grout the deep and shallow rock layers of the roof respectively and pump in desiccants, and use short hollow anchor bolts for the two sides to anchor and pump in desiccants to ensure sufficient dryness in the shallow part. Finally, dig water-conducting boreholes at the bottom corners of the two sides, spray the surface of the roadway, and reinforce the floor with concrete. This method can reinforce and control water in the water-rich soft rock, effectively improve the strength of the soft rock, and through macroscopically regulating the underground water flow direction artificially, reduce the intrusion of underground water into the soft rock of the roadway, so as to effectively control the stability of the surrounding rock of the water-rich soft rock roadway.

This utility model discloses a pressure-type anti-buoyancy anchor waterproof structure. A frustum-shaped water-storing buffer sleeve is fixedly installed on the outer wall of the middle part of the protective sleeve. The interior of the frustum-shaped water-storing buffer sleeve is filled with a drainage filling layer. Inclined water distribution pipes are symmetrically fixedly connected to both ends of the frustum-shaped water-storing buffer sleeve. This utility model utilizes the frustum-shaped water-storing buffer sleeve to provide a certain buffer area for groundwater to flow upward, preventing groundwater from directly seeping upward along the edge of the protective sleeve. The drainage filling layer plays a role in shaping and supporting the frustum-shaped water-storing buffer sleeve, improving its structural strength and preventing it from being squeezed and deformed underground. Water can flow inside the drainage filling layer, while the inclined water distribution pipes divert the flowing water, discharging it to the far sides of the anchor rod, allowing it to re-infiltrate into the underground soil, thus significantly reducing the amount of groundwater flowing to the surface.

The invention belongs to the technical field of underground pipe geothermal heating, and relates to an asymmetric arrangement method and design method of a buried pipe group for an underground water seepage field, and the method comprises the following steps: in the flowing direction of underground water, the depth of buried pipes is non-uniformly distributed according to the gradient principle of'shallow upstream and deep downstream '; the horizontal distances between the buried pipes are non-uniformly distributed according to the principle that the upstream is dense and the downstream is sparse; in the three-dimensional space, the adjacent buried pipes are distributed in a stepped mode or a staggered mode through differential arrangement of the depth and the distance, so that the heat affected zones of all the wells are overlapped in a staggered mode in the vertical direction and the horizontal direction. The depth, the horizontal distance and the arrangement form of the buried pipes are differentially adjusted in the seepage direction, so that the heat extraction strength of a pipe group is matched with the heat-carrying recovery capacity of underground water in space, cold accumulation is restrained, and dynamic balance of a regional rock-soil thermal field and long-term efficient and stable operation of a system are achieved.

The invention discloses the technical field of deep foundation pit dewatering construction methods, and particularly relates to a deep foundation pit safe dewatering method suitable for a water-rich sand layer. The method comprises the following specific steps that a foundation pit deformation monitoring instrument, an underground water flow monitoring instrument and an underground water level monitoring instrument are used for monitoring foundation pit pile top horizontal displacement, vertical displacement, ground surface settlement, underground water flow speed, underground water flow, gap water pressure foundation pit deformation and underground water flow in the deep foundation pit dewatering process; the underground water level data is wirelessly transmitted to the cloud deep foundation pit underground water comprehensive simulation and water discharge and return calculation system, and the cloud deep foundation pit underground water comprehensive simulation and water discharge and return calculation system processes the data, gives a calculation result and transmits the calculation result to the water discharge reduction terminal or the water return compensation terminal. The safe dewatering method for the deep foundation pit is good and accurate, the underground water condition can be monitored in real time, and water can be supplemented and drained in time.

The application provides a groundwater flow field information simulation method and system, including obtaining simulation basic data, obtaining hydrological event data through the simulation basic data, obtaining spatial correlation characteristics based on the hydrological event data and using clustering operation, and generating a geological hypothesis set; constructing an initial network topology framework and initializing through the simulation basic data and the geological hypothesis set, extracting an initial collaborative sub-network through the initial network topology framework and defining an execution rule; obtaining a correction parameter adjustment scheme set and a chaos parameter adjustment scheme set through the initial network topology framework respectively and generating a final scheme set, simulating based on the final scheme set to generate a deduction simulation result; performing cyclic deduction and obtaining a final simulation result based on a convergence condition, and providing a digital twin simulation method which can be based on and evolve with hydrogeological physical laws.

The invention is applicable to the technical field of pollution remediation, and particularly relates to a remediation method for polluted underground water in a storage yard based on coupling and blocking of a permeable reactive barrier, and the method comprises the following steps: acquiring site hydrogeological conditions and distribution conditions of pollution plumes, and constructing a stretching arm type water stop guide wall; constructing a lifting type PRB system, wherein the lifting type PRB system is constructed in a closure area of two downstream arms of the arm-expanding type water stop guide wall; the PRB filler is determined according to the water quality, the flow and the flow velocity of the underground water, the lifting type PRB system is filled with the PRB filler, and the polluted underground water is repaired through the PRB filler. Polluted underground water at the bottom of the tailing pond and around the tailing pond is blocked, guided and converged by the aid of the arm-expanding type water-stopping and flow-guiding wall, the polluted underground water is guided into the lifting type PRB system, and the polluted underground water naturally flows through the PRB system under the converging action of the water-stopping and flow-guiding system. Therefore, the underground water flowing to the downstream through the PRB system reaches the underground water environment quality standard requirement or meets the ecological function requirement of regional underground water.

The present invention belongs to the technical field of groundwater flow and solute transport prediction, and provides a method for predicting groundwater flow and solute transport based on a latent diffusion model, including: generating aquifer lithology structure samples by using a random algorithm; obtaining corresponding head and concentration distribution field samples; generating corresponding low-dimensional latent random variable samples; training a conditional constrained denoising diffusion probability model based on the low-dimensional latent random variable samples and the aquifer lithology structure samples; randomly generating latent random variables, given the aquifer lithology structure, and inputting them into the trained denoising diffusion probability model; inputting the predicted latent random variables into the trained variational autoencoder; The present invention can utilize the aquifer lithology structure parameters and the given initial and boundary conditions, and by inputting different aquifer lithology structures, output the corresponding head and concentration distribution fields, realizing the rapid prediction of groundwater flow and solute transport simulation.

The present invention discloses a geological and mineral analysis system and method. The system obtains geological profile data of a target mining area and constructs a three-dimensional geological model based on the data. The system then detects the permeability matrix and heavy metal adsorption characteristic parameters of each soil layer in the three-dimensional geological model, dividing the target mining area soil into multiple layers of heterogeneous soil structures. A pollution migration model corresponding to each heterogeneous soil layer is established. The pollution migration model corresponding to each heterogeneous soil layer is solved using the finite difference method, and heavy metal flux is iteratively calculated layer by layer. Based on the output flux of the bottom soil layer, combined with the groundwater flow direction and dilution effect, the spatial distribution of heavy metal concentrations in groundwater at the target depth is predicted. By dividing the soil in the mining area into multiple layers of heterogeneous soil structures, the prediction of heavy metal pollution migration is improved.

The present invention relates to the field of simulation experiment technology, and discloses a device and method for simulating underground root growth in karst areas. The device comprises a groundwater simulation layer disposed within a water tank, wherein a water circulation mechanism is provided within the water tank so that the groundwater simulation layer simulates the flow of groundwater; a rock-soil mixture layer disposed within the tank, wherein the top and bottom surfaces of the tank are both open, and the bottom surface of the tank is provided with a communication mechanism, and the tank is connected to the inner cavity of the water tank via the communication mechanism so that the rock-soil mixture layer and the groundwater simulation layer are connected; a simulation chamber for filling the rock-soil mixture layer; a plurality of simulated karst caves, wherein the plurality of simulated karst caves are spaced apart within the rock-soil mixture layer; and a vegetation simulation layer, wherein the vegetation simulation layer is provided on the top surface of the rock-soil mixture layer. The present invention simulates the influence of different karst bedrock crack widths and crack directions on the underground root growth changes, thereby achieving accurate dynamic monitoring of plant root growth in two-dimensional and three-dimensional structures in karst areas.

The present invention discloses a tunnel water diversion structure and a reverse construction method applicable to large karst channels, including a water-rich karst channel distributed horizontally or obliquely relative to the tunnel. The water-rich karst channel intersects with the tunnel and is truncated by the tunnel into a left channel section and a right channel section. A prefabricated spliced inverted siphon water conduit culvert structure for connecting the left channel section and the right channel section to each other is provided at the bottom of the tunnel. During construction, the excavation of the lower space of the tunnel is first carried out, and then the construction of structures such as the inverted siphon water conduit culvert is carried out. Subsequently, based on the lower structure of the tunnel, the excavation and support construction of the upper space of the tunnel are carried out. The structure of the present invention is simple and reliable, with good drainage performance, enabling the entire groundwater diversion process not to enter the tunnel, neither increasing the drainage pressure of the tunnel drainage structure nor having the operation risk of groundwater flowing in the tunnel. Moreover, by adopting the reverse construction method, the safety of tunnel construction and the reliability of the structure can be effectively guaranteed, with high construction safety and good economy.

To provide a subsurface water drainage structure and a subsurface water drainage method capable of effectively draining subsurface water without freezing when freezing the ground surrounding an existing underground structure and draining the subsurface water into the underground structure from an unfrozen ground.SOLUTION: A subsurface water drainage structure 40 is provided with: a guide pipe 41 provided with a hollow 41a in communication with an opening 16a in a wall surface 16 of the subsurface structure 10 and a branch pipe 41 located halfway; an insertion pipe 44 of which a part is inserted inside of the ground GB through the hollow 41a of the guide pipe 41 to form a first passage 43 through which subsurface water passes between the guide pipe 41 and itself, and through which fluid passes; a first bulb 47 shutting down the first passage 43 at an inner side of the subsurface structure 10 further than the branch pipe 41c; and a second bulb 48 opening / closing the branch pipe 41c so as to discharge the subsurface water of which pressure rises through freezing expansion pressure generated upon freezing the ground GB surrounding the subsurface structure 10 to the inside of the substructure 10 by opening the second bulb 48.SELECTED DRAWING: Figure 3

The invention relates to the field of sewage sampling, and discloses geophysical water sampling equipment and method for groundwater pollution investigation, and the geophysical water sampling equipment comprises a water taking device, a water pumping pipe, a connecting column and an upper cover; the water taking device further comprises a filtering water taking unit arranged in the water taking device; the water pumping pipe is fixedly arranged on one side of the water taking device; the connecting columns are uniformly and fixedly arranged at the top of the water taking device at equal intervals; when the upper cover is fixedly arranged in the hole in the top of the connecting column, the hole collapses so that underground water can be covered, the water taking device placed in the hole cannot obtain the underground water in the hole, the driving assembly on the water taking device drives the drilling assembly to rotate, the drilling assembly drills and collapses down a soil layer, and the water taking device can take the underground water out of the hole. And the water taking device can reach an underground water flowing area, so that the water taking device can stably take out underground water.

The invention discloses a method for testing shear mechanical characteristics of an interface between sandy cobble and a cast-in-place pile body under the action of hydrodynamic grouting. The device comprises a fixed base, a fixed bearing platform, a hydraulic column, a servo press, a loading sliding block, a force transmission base plate, a pressure plate, a test mold upper shear box, a soil sample lower shear box, a soil sample base, a base limiter, a sandy gravel soil sample, a cast-in-place concrete sample, a shear hydraulic jack and a grouting pump. The method comprises the following steps: covering cast-in-place concrete on a sandy gravel soil sample to form a mutually engaged and cemented concrete-soil sample interface, spirally burying a rubber flower in the sandy gravel soil sample to control the water level and flow velocity of water, and arranging a grouting inlet / outlet at the concrete-soil sample interface at the tops of the two sides of a lower shear box of the soil sample to diffuse slurry to a design range; under the conditions of different underground water flow rates, grouting pressures and water-cement ratios of cement grout, the diffusion and adhesion movement of the grout on the pile body interface of the cast-in-place pile is simulated, and then the interface shear model test of the sandy gravel stratum and the pile body of the cast-in-place pile under the hydrodynamic grouting pressure action is truly, visually and systematically achieved.

The invention discloses a foundation pit health status prediction method based on groundwater level monitoring, which belongs to the technical field of foundation pit health status prediction. The method specifically comprises: real-time monitoring of groundwater level, real-time collection of groundwater level data, and preprocessing of the collected groundwater level data; establishing a groundwater level change model based on the preprocessed groundwater level data, and analyzing the change of groundwater level; analyzing the relationship between the change trend of groundwater level and foundation pit stability, establishing a foundation pit health status assessment model, and obtaining a foundation pit health status index; based on the groundwater level change trend, predicting the foundation pit health status for a period of time in the future; dividing the foundation pit health status into different health status levels, and formulating corresponding measures according to the actual health status level; comprehensively analyzing the foundation pit health status in combination with groundwater level changes, foundation pit soil characteristics, support structure performance, and groundwater flow patterns, and the method is suitable for foundation pit projects under complex geological conditions.

This invention discloses an underground water supply system for a shield tunnel and its installation method. The tunnel is composed of segments, including a pipeline module for connecting groundwater on both sides of the tunnel and an intelligent control module for enabling self-adjustment and self-adaptation of the water supply equipment. The intelligent control module controls the pipeline module. Within each segment ring, a water collection pipe is installed on the side of the segment ring that contacts the higher water level, and a drainage pipe is installed on the side of the segment ring that contacts the lower water level. A guide pipe connects the water collection pipe and the drainage pipe, ultimately forming an interconnected water supply system. Groundwater flows from the side with the higher water level through the water collection pipe, guide pipe, and drainage pipe to the side with the lower water level, thereby maintaining the original water level around the tunnel, protecting the groundwater environment before tunnel construction, and avoiding adverse effects such as ground subsidence and ecological damage caused by groundwater obstruction and changes in groundwater level.

The present invention belongs to the field of geotechnical engineering and provides a system and method for obtaining water level values for anti-floating defenses that take into account the barrier effect of underground structures. The system and method comprise obtaining the water level heights of any two pre-set exploration holes, the distance between the two exploration holes, and groundwater flow direction parameters of a proposed underground structure site; determining the hydraulic gradient based on the water level heights of any two exploration holes and the distance between the two exploration holes, using the angle between the groundwater flow direction and the normal direction of the underground structure direction; determining the groundwater level elevation due to the barrier effect of the underground structure based on the hydraulic gradient and the influence radius of the aquifer; and determining the recommended groundwater anti-floating defense water level that takes into account the barrier effect of the underground structure based on the groundwater level elevation and the recommended anti-floating water level value obtained based on historical long-term observed water level and rainfall data.

The invention provides a high-salt mine water deep stratum reinjection chemical blockage prediction simulation method, which comprises the following steps of: establishing a water-rock reaction mineral list by analyzing hydrochemical characteristics of reinjection water and underground water of a deep reinjection layer and mineral component content of the reinjection layer, and calculating a chemical blockage prediction result by combining mineral reaction kinetics and nonlinear influence of high TDS (Total Dissolved Solid) on a reaction rate; an underground water flow-chemical reaction coupling model is constructed, and the mineral precipitation process and the influence of the mineral precipitation process on the porosity are simulated. Finally, a risk index (CRI) early warning model based on the porosity change rate is established, quantitative evaluation and graded early warning of the blockage risk of the reinjection well are achieved, and a scientific basis is provided for guiding blockage dredging measures and prolonging the service life of a well hole.

The invention relates to the technical field of data processing, in particular to an underground water updating capacity evaluation method and system based on multi-source data fusion. Comprising the steps that a multi-source heterogeneous data set is acquired, geological heterogeneity is processed through a spatial interpolation method, the permeability value of each geological unit is calculated, and permeability difference characteristics are determined; predicting spatial and temporal distribution of the underground water flow velocity based on permeability difference characteristics, and performing time sequence adjustment and calibration in combination with dynamic hydrological data to obtain dynamic calibration flow velocity parameters; integrating the supply rate and solute migration path information by using the dynamically calibrated flow velocity parameter, calculating the stability parameter of the hydrological cycle, and generating quantitative indexes of the underground water update rate and the cycle efficiency; and obtaining an optimized evaluation model, integrating multi-source data, calculating a comprehensive evaluation value of the groundwater updating capability, and determining a final evaluation result of the groundwater updating capability. The underground water renewal capacity can be accurately evaluated, and the method is suitable for management and sustainable utilization of underground water resources in the karst area.

The present invention discloses a method for constructing a mathematical model to simulate groundwater solute transport with variable density. The method includes establishing basic assumptions: saturated aquifer flow is based on Darcy's law, applicable to confined aquifers; temperature is constant; and fluids are completely miscible and incompressible. The method then establishes a relationship between the measured groundwater brine head and the equivalent freshwater head. The governing equations for groundwater flow and solute transport are established, with the hydrodynamic dispersion term in the governing equations adopting a nonlinear, compound-characteristic equation. The governing equations for groundwater flow and solute transport are coupled. Finally, boundary conditions are determined, and a mathematical model is established based on hydrogeological parameters and compound-characteristic parameters. By adding the characteristic dispersion of solute compounds to the governing equations for groundwater solute transport, the simulation of variable density solute transport becomes more accurate, facilitating the accurate prediction of the migration paths and contamination ranges of pollutants such as heavy non-aqueous phase fluids in aquifers.

The utility model discloses an underground water flow direction measuring device, which belongs to the technical field of underground water monitoring and comprises a cylinder, the bottom of the cylinder is connected with an isolation component, and the top of the cylinder is provided with a positioning component. A sliding limiting transmission block between a limiting block and a limiting groove can drive the filter cylinder to move out of the isolation cylinder, and water flow impacts on a marker to cause deviation, so that the device has a better detection effect on the flow direction of underground water; through the arrangement of the positioning assembly, the first motor drives the second straight gear to rotate, the lead screw can rotate in a limited mode under meshing transmission between the second straight gear and the first straight gear, the sliding groove limits the sliding blocks under meshing connection between the lead screw and the sliding blocks, and the two sliding blocks can drive the abutting blocks to move outwards to be supported on the underground rock wall. The device can be directionally positioned, so that the flow direction detection precision of underground water is improved.

To disclose a groundwater water level elevation measurement method, groundwater storage measurement system, and application.SOLUTION: According to a groundwater water level elevation measurement method in one aspect of the present invention, after boring at a measurement site, a permeable cylinder is placed therein so as to ensure that groundwater water enters the permeable cylinder, a water inlet of an aqueduct extends at or below a liquid level in the cylinder, a water outlet is led to the ground, a stable drainage flow rate is detected, and a water level elevation at the water inlet is measured and calculated according to a formula. A groundwater storage monitoring and measurement system according to one aspect of the present invention layouts a matrix of water level monitoring point matrix, measures and collects groundwater level elevations at all sites and related data, and constructs water storage feature data of a groundwater measurement space. The present invention is a new technological plan that makes it possible to measure a groundwater level elevation by using a groundwater flow rate, has high technological adaptability, and enables a direction of groundwater monitoring technological improvement to be changed.SELECTED DRAWING: Figure 2

The present application relates to the technical field of data processing, and more particularly to a groundwater renewal capacity evaluation method and system based on multi-source data fusion. The method comprises the following steps: obtaining a multi-source heterogeneous data set, processing geological heterogeneity through a spatial interpolation method, calculating the permeability value of each geological unit, and determining the permeability difference characteristics; predicting the spatio-temporal distribution of groundwater flow rate based on the permeability difference characteristics, combining with dynamic hydrological data, adjusting and calibrating the time sequence, and obtaining dynamic calibrated flow rate parameters; using the dynamic calibrated flow rate parameters, integrating the recharge rate and solute migration path information, calculating the stability parameters of hydrological cycle, and generating quantitative indicators of groundwater renewal rate and cycle efficiency; obtaining an optimized evaluation model, integrating multi-source data, calculating the comprehensive evaluation value of groundwater renewal capacity, and determining the final evaluation result of groundwater renewal capacity. The present application can accurately evaluate the groundwater renewal capacity and is suitable for the management and sustainable utilization of groundwater resources in karst areas.