80 results about "Hydraulic conductivity" patented technology

The invention provides a water conservancy grid parameter inversion method and system based on artificial intelligence, and the method comprises the steps: obtaining multi-source monitoring data of a target water conservancy project region, combining the multi-source monitoring data with a preset water conservancy grid physical mechanism model, and building an artificial intelligence probability inference frame for heterogeneous medium parameter inversion; and iteratively optimizing an implicit association relationship between permeability coefficient spatial distribution and hydraulic conductivity dynamic change in the water conservancy grid physical mechanism model, generating a parameter probability distribution set, and according to the parameter probability distribution set, combining with a historical seepage field evolution mode of the target water conservancy project area to obtain a historical seepage field evolution model of the target water conservancy project area. And the equivalent parameter value of each grid unit in the water conservancy grid physical mechanism model is dynamically corrected, a water conservancy grid parameter inversion result is generated, the precision and stability of water conservancy grid parameter inversion under complex working conditions are improved, and reliable support is provided for engineering safety and risk early warning of reservoirs and dams.

The invention relates to the technical field of coal mine safety, in particular to a coal mine water disaster prediction system based on a data analysis and machine learning technology, which comprises a multi-source data acquisition module, a dynamic data preprocessing module, a multi-modal feature engineering module, an integrated prediction model construction module and a prediction optimization control module, the multi-source data acquisition module fuses geological and hydrological data, micro-seismic data and equipment working condition data, the dynamic data preprocessing module constructs a noise feature library and realizes noise elimination and data standardization, and the multi-modal feature engineering module extracts dynamic causal feature vectors of a water diversion coefficient change rate and a micro-seismic energy release rate based on convergence cross mapping; the integrated prediction model construction module fuses and outputs a water disaster risk probability value through a meta-learner; and the prediction optimization control module triggers a sampling rate adjustment and disaster response linkage mechanism according to the risk probability value. The method has the advantages of high reliability, high adaptability and timely response, and is suitable for real-time prediction of water disasters in a complex coal mine environment.

The invention belongs to the technical field of hydrology and water resources, and discloses a cold and dry mountainous area drainage basin runoff simulation method based on an MIKE SHE / MIKE 11 coupling model in combination with GIS / RS data. According to the multi-source data fusion technology, a cold and dry mountainous area distributed input data set is constructed through TRMM satellite rainfall data, an MODIS LAI product and an ASTER DEM, and the rainfall space representation precision is improved by 40%. According to the model coupling mechanism, an MIKE SHE / MIKE 11 collaborative simulation framework is provided, earth surface-groundwater flow data interaction is achieved through river channel linkage, and the complex river network flood routing simulation error is reduced to 10% or below. According to the parameter partition calibration method, a drainage basin is divided into five hydrogeological regions, sensitive parameters such as a Manning coefficient and a hydraulic conduction coefficient are optimized in combination with a genetic algorithm, and the basic flow simulation precision is improved by 25%.

The invention provides a soil drought resistance determination method, device and equipment and a storage medium, and the method comprises the following steps: determining a specific drought-susceptibility index of a target soil sample in a specific water content state based on the volume, saturated water content, saturated hydraulic conductivity and a soil water holding curve of the target soil sample; the specific drought-susceptibility index represents the power required for transferring unit water from unit volume of a target soil sample to the surface of a crop root system in unit time; and determining the drought resistance of the target soil sample based on the specific drought-susceptibility index of the target soil sample. Therefore, the drought resistance of the soil is comprehensively, accurately and quantitatively evaluated, and a theoretical basis and practical guidance are provided for comparison and improvement of the drought resistance of the soil in agricultural production.

Tuning fracture hydraulic conductivity can be provided so that high hydraulic conductivity in high temperature zones and low hydraulic conductivity in low temperature zones can be defined in enhanced geothermal systems (EGS). Uniform thermal gradient along flow paths can be provided or defined to help provide such conductivity zones. Experimentation performed to evaluate embodiments showed that embodiments could prevent appearance of dominant flow paths between the wells and maintain high heat extraction rates. Embodiments can greatly increase cumulative heat extraction. Embodiments can also be provided for application solely to the injection wells. Other embodiments can position tuning agents between the wells and still help provide control of the fluid flow in the reservoir and enhance heat extraction.

The invention discloses a complex slope runoff simulation method based on multi-source data fusion. Comprising the following steps: fusing an unmanned aerial vehicle LiDAR, a ground penetrating radar and a remote sensing image, and considering physical coupling relationships such as vegetation root systems to generate a high-precision and physically consistent initial earth surface parameter field; the method comprises the following steps: identifying micro-topographic depression through a graph cutting algorithm and the like, and constructing a dynamically evolved slope overflow network based on a depression filling-overflow mechanism; establishing an overflow-scour-infiltration dynamic feedback regulation and control mechanism, wherein the scour intensity calculated according to overflow data is used for correcting the saturated hydraulic conductivity of the soil in real time, and corrected parameters are immediately fed back to an improved Green-Ampt infiltration model; through coupling solution of a multi-time scale algorithm, spatial and temporal distribution of slope runoff is output, and early warning and inversion of critical rainfall conditions can be triggered. The underlying surface dynamic feedback process can be simulated, the simulation reliability is improved, and technical support is provided for mountain torrent early warning.

The invention relates to the technical field of rail transit construction, and discloses an analogue simulation method for a shield mud film gas check test, which comprises the following steps: S1, establishing an analogue simulation system for the shield mud film gas check test; s2, preparing slurry according to requirements; s3, measuring the porosity, density, residual moisture content, water conductivity coefficient, elastic modulus, Poisson's ratio and water holding capacity parameters of the slurry and the stratum soil body; s4, all the material parameters obtained in the S3 are substituted into an analogue simulation system of the shield mud film air closing test, and then a small amount of mud film air closing tests are used for carrying out model verification; and S5, carrying out simulation calculation analysis. According to the method, an indoor gas closing test simulation model is established on the basis of a Biot pore elasticity theory under a fluid-solid coupling condition, different water holding capacity characteristics of a mud film and a stratum are considered, and model verification is carried out through a gas migration rule and leakage flow evolution data obtained through an indoor test; and the rapid evaluation of the closeness characteristic of the mud film under complex geological conditions and shield parameter working conditions is realized.

The invention provides a soil sampling system and method. The method comprises the following steps: collecting the water content of each sensing node in a target wetland; determining a sudden change area of soil moisture in the target wetland according to the difference characteristics of the moisture content among the sensing nodes and the terrain gradient of the target wetland, and further determining a dynamic offset vector of an initial sampling point in the target wetland; determining layering characteristics of soil moisture in the target wetland, and determining fluctuation characteristics of soil unsaturated hydraulic conductivity when the soil moisture in the target wetland diffuses according to the layering characteristics and difference characteristics of the moisture content among the sensing nodes; and according to the dynamic offset vector and the fluctuation characteristic of the soil unsaturated hydraulic conductivity when the soil moisture in the target wetland diffuses, determining a credible interval of a sampling route when soil sampling is performed on the target wetland, and further controlling a sampler to sample the target wetland based on the credible interval of the sampling route. By adopting the scheme, the sampling point can be dynamically adjusted according to the real-time change condition of the soil moisture.

The application provides a soil vertical water flux monitoring method and system, and belongs to the technical field of soil water monitoring. The method comprises the following steps: collecting multi-layer soil water content and water potential data in real time, calculating soil vertical water flux of each layer by combining soil hydraulic conductivity, and determining soil water balance plane depth by detecting vertical water flux direction change. The upward evapotranspiration flux and downward seepage flux are calculated respectively based on the balance plane. The application can accurately identify the balance plane of vertical water migration direction change, realize synchronous dynamic monitoring of evapotranspiration and seepage, and effectively improve the continuity and accuracy of soil vertical water flux monitoring.

The invention discloses a dynamic monitoring system and method for soil water seepage characteristics based on multi-sensor fusion, and the system comprises a data collection module which collects the original data of soil moisture content, matrix potential and temperature through a plurality of integrated sensing units; the data preprocessing module is used for carrying out time synchronization and anomaly correction on the original data and generating water content, matrix potential and temperature data streams; the dynamic collaborative inversion module is used for resolving a soil hydraulic characteristic parameter group of each unit position in real time based on a space-time gradient change relation of a soil hydrodynamic model coupling data flow; and the space-time adaptive fusion module is used for carrying out space interpolation and time deduction by introducing a fusion algorithm taking a soil hydrodynamic model as a covariable according to the parameter groups and the temperature data streams of all the units, and generating a saturated permeability coefficient field and an unsaturated hydraulic conductivity parameter field of continuous space-time evolution. The spatial-temporal resolution and the real-time sensing capability of dynamic evolution of the soil moisture field are improved, and the requirements of precision agriculture and disaster early warning are met.

The application discloses a kind of fruit hydraulic conductivity and biomechanical parameter measurement method and device;The measurement method includes the following steps: step 1: sampling;Step 2: measure initial fruit water potential Ψ f0 With pressure chamber;Step 3: do fruit water absorption experiment;Step 4: measure fruit pressure-volume curve (P-V curve);Step 5: measure fruit stalk + calyx hydraulic resistance and fruit stalk hydraulic resistance, respectively Rc And Rs;Step 6: data processing.The fruit hydraulic conductivity and biomechanical parameter measurement method and device, the hydraulic conductivity affecting fruit water transport and the biomechanical parameters such as volume elastic modulus, cell wall coefficient of extension, critical point swelling pressure and other influencing factors affecting cell elastoplastic deformation are conveniently obtained, which is convenient for studying fruit swelling growth, and helps to deeply understand the physiological mechanism of fruit cell swelling and its response law to changes in different habitat elements.

To provide an ejecta suppression and ground subsidence suppression system of liquefaction ground which confirms that a crushed shell drain composed of a crushed shell suppresses reduction in drainage performance accompanied by mixing of sand compared to a gravel drain, and is effective as a liquefaction countermeasure drain, and in which since the crushed shell is small in dry density and is extremely lightweight compared to a crushed stone, the dead weight in a ground improvement area is small, and the system has an effect for further reducing a ground subsidence amount after liquefaction.SOLUTION: An ejecta suppression and ground subsidence suppression system, ejecta being from an improvement ground surface by earthquake time liquefaction in an improved ground where a crushed shell drain is laid, includes: selecting a crushed shell having such a coefficient of permeability that a seepage pressure by an excess pore water pressure difference of the crushed shell drain laid on the ground is not higher than an effective placement pressure of the crushed shell drain, after liquefaction; laying the crushed shell drain formed of the selected crushed shell; and improving the ground.SELECTED DRAWING: Figure 1

The simple and practical device comprises a sample ring, a graduated tube and an assembly seat, the assembly seat is provided with an assembly cavity with two through ends, a sealing plug is arranged at the top of the assembly cavity and used for assembling the graduated tube, a limiting groove is formed in the bottom of the assembly cavity, and the graduated tube is arranged in the limiting groove. The sample ring is detachably arranged in the limiting groove, an expansion gap is formed between the sample ring and the sealing plug, a water seepage leakage net is assembled at the bottom of the sample ring, and supporting legs are arranged at the bottom of the assembling base. Through mutual cooperation of the sample ring, the sealing plug, the graduated tube, the assembling seat and the water seepage leakage net, a simple device for measuring the saturated hydraulic conductivity of the soil by adopting a variable water head method is formed, and the defect of surface disturbance in the expansive soil measuring process of an existing instrument can be overcome.

The application discloses a numerical simulation method for evaluating ion type rare earth ore leaching efficiency, and the method comprises the following steps: setting ore solution input flow and ore solution concentration; based on the water content of the ore bed and the unsaturated hydraulic conductivity of the ore bed soil, the matric potential function of the ore bed soil is constructed through Richards equation; then the change relationship of the water content of the ore bed with time is determined; based on the change relationship of the water content of the ore bed with time, the diffusion coefficient is solved through the convection-diffusion equation, and then the ore solution output flow and the rare earth element concentration are determined; and the rare earth ore leaching efficiency is determined according to the ore solution input flow and the ore solution concentration, and the ore solution output flow and the rare earth element concentration. According to the embodiment of the application, on the one hand, the process of the ore solution entering the ore bed can be intuitively understood, and on the other hand, the reaction process of the ore solution and the ion type rare earth can be obtained, and meanwhile, a leaching efficiency evaluation method is provided, which can provide a reference for precise control of the ore washing process in the later period, and can be widely applied to the ion type rare earth ore mining technical field.

The invention provides an optimal signal source frequency selection method and system based on an oscillation hydraulic chromatography test, and the method comprises the steps: building a sensitivity equation of water head observation to a water diversion coefficient under the condition of exporting oscillation water pumping; under the condition of visualized two-dimensional oscillation water pumping, the sensitive degree of a water head to the water guiding coefficients of different positions is observed; the sensitivity equation of the hydraulic conductivity coefficient is converted into a dimensionless form, a frequency selection scheme based on the observation position and the hydraulic diffusion coefficient is provided, and the optimal frequency is determined according to the sensitivity equation of the dimensionless form; and according to the hydraulic diffusion coefficient, forward modeling of the two-dimensional heterogeneous parameters of the detection area is carried out by using the established two-dimensional geological forward modeling model, and according to the determined optimal frequency, parameter inversion is carried out by using the established parameter inversion model. According to sensitivity analysis, the optimal frequency selection scheme is obtained according to the influence of parameters on observation data, the hydraulic diffusion coefficient of a simple geologic structure and the distance between an observation well and a pumping well.

The invention relates to the technical field of measurement fixing devices, in particular to a solid waste regeneration type concealed pipe drainage inverted filter and a laying method.The solid waste regeneration type concealed pipe drainage inverted filter comprises an aggregate layer and a fine material layer, the aggregate layer is located below the fine material layer, the aggregate layer is located above a concealed pipe, and the aggregate layer and the fine material layer are integrally narrow in the lower portion and wide in the upper portion; geotechnical cloth 2 is laid among the aggregate layer, the fine material layer and the original soil layer, and the aggregate layer is in contact with the upper half part of the outer side wall of the concealed pipe. According to the invention, through the arrangement of the reverse osmosis layer, the reverse osmosis layer is composed of the aggregate layer and the fine material, the water conductivity of the reverse osmosis layer is larger than that of soil, water in the soil above the reverse osmosis layer can be absorbed into the reverse osmosis layer, and the trumpet-shaped arrangement increases the contact interface between the reverse osmosis layer and the soil, so that the reverse osmosis layer at the upper part of the concealed pipe can rapidly reach saturation; water in the reverse osmosis layer is drained into the concealed pipe under the action of gravity and pressure potential, so that the water content of soil is reduced quickly, and a good drainage effect is achieved.

The present application provides a soil column device and method for simulating soil water and salt leaching under drip irrigation conditions. The method generates simulated moisture information at different depths within the soil column device; pre-installs intelligent moisture sensors and intelligent salt concentration sensors in each soil layer of the soil column device, collects soil moisture information via the pre-installed intelligent moisture sensors, and then determines the degree of fit between the simulated moisture information and the soil moisture information; collects the salt concentration within the soil column device during drip irrigation via the pre-installed intelligent salt concentration sensor, and determines the water-salt permeability coefficient during water and salt migration within the soil column device based on the soil moisture information and salt concentration; adjusts the saturated hydraulic conductivity based on the degree of fit; and uses the adjustment result and the water-salt permeability coefficient to determine the sensitivity of the soil's saturated hydraulic conductivity to water and salt leaching. The present application's solution allows for adaptive adjustment of the leaching simulation process under the premise of dynamic changes in soil physical properties.

The present disclosure provides a method, device, electronic device, and storage medium for evaluating the conductivity of a fault zone. The method comprises obtaining an imaging logging image and / or core image of a target fault zone at a preset location, and determining the number of each diagenetic product at the preset location based on the imaging logging image and / or core image at the preset location and a diagenetic product identification model; determining a cementation weight coefficient and a strain weight coefficient at the preset location based on the number of each diagenetic product at the preset location; calculating a conductivity evaluation parameter at the preset location based on the cementation weight coefficient and the strain weight coefficient; and evaluating the hydraulic conductivity of the target fault zone at the preset location based on the conductivity evaluation parameter. This method qualitatively determines the hydraulic conductivity of the fault zone by identifying and quantitatively analyzing diagenetic products and rock fabric.

The application discloses a kind of rice irrigation area field dynamic hydrological process simulation method and system, method includes: the spatial correlation information base of rice field and ditch is constructed;With day as step simulation cycle, according to the dynamic adjustment effective field height of rice growth stage, based on field type and water level potential energy difference calculation lateral recharge or discharge;According to the exponential decay correction of plow pan saturated hydraulic conductivity of consecutive flooding days, calculate vertical infiltration amount;Overflow drainage, lateral discharge, vertical infiltration are updated into water balance equation field water depth;According to the topological network of confluence of field spatial position and elevation, consider the peak-shaving superposition of confluence time delay, obtain sub-basin export total runoff.It realizes the whole process fine simulation of field ridge water storage, field-ditch lateral interaction, plow pan nonlinear infiltration and distributed confluence, significantly improves the precision of rice irrigation area hydrological process simulation, provides scientific basis for irrigation water resources management.

The present disclosure relates to a method for predicting soil hydraulic properties based on an upward infiltration experiment of a cutting ring soil sample. According to the new design approach, based on an inverse process of one-dimensional water upward infiltration analytical solution of homogeneous dry soils under a boundary condition of a constant pressure, by recording the data regarding cumulative infiltration amounts and infiltration times during the upward infiltration process of the cutting ring soil sample and a time for the wetting front to reach the upper surface of the cutting ring soil sample, a saturated hydraulic conductivity of the cutting ring soil sample is measured, and the soil hydraulic properties are quickly obtained. The present disclosure overcomes the defects that the methods in the prior art for measuring soil hydraulic properties are time consuming, low in efficiency, and not suitable for rapid acquisition of large area in the field, avoids the problems of multiple solutions and non-convergence of parameters, and improves the efficiency of acquiring soil hydraulic properties, thereby providing an effective means for the investigation of soil hydraulic properties in a large area in the field.

The utility model discloses a device for measuring the saturated hydraulic conductivity of soil. The device comprises a variable water measuring part, a constant water measuring part and a sealed cylinder with a through top, the interior of the sealing cylinder is sequentially divided into a placing area for placing a soil sample and a water outlet area from top to bottom through a permeable component, a water outlet pipe penetrating through the water outlet area is arranged on one side of the bottom of the sealing cylinder, a water outlet valve is arranged on the water outlet pipe, and the water outlet pipe is communicated with a graduated tube arranged in the vertical direction; the variable-water measuring part or the constant-water measuring part is detachably assembled at the top end of the graduated tube, and the arranged sealing cylinder and the graduated tube are matched with the variable-water measuring part and the constant-water measuring part, so that the saturated hydraulic conductivity of the soil can be measured by a variable-water-head method, and the saturated hydraulic conductivity of the soil can also be measured by a constant-water-head method; therefore, one tool has two purposes.

The utility model discloses a soil crust infiltration characteristic monitoring device, which belongs to the technical field of soil measuring instruments and comprises a matrix soil column layer, a water accumulation device arranged above the matrix soil column layer and an organic crust layer detachably arranged between the matrix soil column layer and the water accumulation device. The matrix soil column layer comprises a bottom barrel and matrix soil filled in the bottom barrel, the organic crust layer comprises a middle barrel and soil crust filled in the middle barrel, and overflow holes are formed in the bottom of the bottom barrel. The device disclosed by the utility model can be used for measuring the hydraulic conductivity of the soil with the crust, so that the soil crust with different thicknesses can be conveniently replaced, and the measurement accuracy is high.

The invention discloses a preparation method of high-performance artificial wetland filler by using tailings, belongs to the technical field of wetland fillers, and comprises the following steps: grinding tailings, preparing sawdust powder, preparing binder aqueous solution, mixing, granulating, drying and roasting. The invention uses tailings, sawdust powder, water, polyvinyl alcohol or sodium carboxymethyl cellulose, aluminum hydroxide and the like as main raw materials, and prepares tailings artificial wetland filler through grinding, mixing, granulating, drying, roasting and the like processes. The invention has the advantages of low preparation cost, high hydraulic conductivity, large specific surface area, relatively uniform pore distribution, fast organic matter accumulation speed, high ability to remove phosphorus in water and the like, is suitable for various artificial wetland water treatment processes, and has good development prospects and practical significance.

The invention discloses a method for measuring saturated hydraulic conductivity of soil, and belongs to the field of soil detection. Acquiring a remote sensing image of the to-be-measured area, acquiring vegetation coverage data of the to-be-measured area and gradient size data of the to-be-measured area from the remote sensing image, and acquiring ground temperature data of the to-be-measured area on site; the method comprises the following steps: preprocessing vegetation coverage data, gradient size data and ground temperature data obtained from a to-be-measured area so as to obtain a vegetation coverage correction factor, a gradient correction factor and a ground temperature correction factor of the to-be-measured area; and constructing a soil saturated hydraulic conductivity measurement optimization coefficient of the to-be-measured area. According to the method, the soil saturation hydraulic conductivity optimization coefficient is constructed through the vegetation coverage correction factor, the slope correction factor and the ground temperature correction factor, and the soil saturation hydraulic conductivity reference value is regulated and controlled through the optimization coefficient, so that more accurate soil saturation hydraulic conductivity can be measured, and more accurate guidance can be provided for agricultural production.

Tuning fracture hydraulic conductivity can be provided so that high hydraulic conductivity in high temperature zones and low hydraulic conductivity in low temperature zones can be defined in enhanced geothermal systems (EGS). Uniform thermal gradient along flow paths can be provided or defined to help provide such conductivity zones. Experimentation performed to evaluate embodiments showed that embodiments could prevent appearance of dominant flow paths between the wells and maintain high heat extraction rates. Embodiments can greatly increase cumulative heat extraction. Embodiments can also be provided for application solely to the injection wells. Other embodiments can position tuning agents between the wells and still help provide control of the fluid flow in the reservoir and enhance heat extraction.

The application discloses a kind of simultaneously determining the measurement system and method of soil water characteristic curve and unsaturated permeability coefficient, comprising: sample chamber, pressure chamber, water supply side, drainage side, manual valve, differential pressure gauge, solenoid valve, PC end and electronic scale.PC end is connected with electronic scale, for recording experimental data;Sample chamber is used to place sample, pressure chamber is used to place sample chamber and pressurization, drainage side and water supply side are each provided with three burettes, and are divided into standard burette and measuring burette, wherein standard burette applies variable head method to measure permeability coefficient in permeation experiment, measuring burette is used to measure the change amount of soil water volume, differential pressure gauge is used to measure the head pressure difference of standard burette and measuring burette and connect solenoid valve to realize the automatic control of soil water inlet and drainage.The application has the advantages that: water level is adjusted using solenoid valve, to realize the automation of measurement process;SWCC curve and permeability coefficient can be simultaneously measured;Instrument cost is low, and measurement result accuracy is higher.

The application discloses a deep mine super-high confined water gushing prediction method and system and a storage medium, and comprises the following steps: constructing a three-dimensional hydrogeological parameter model; dividing the three-dimensional hydrogeological parameter model into a back-calculation target area and a non-target area according to the excavation response priority; summing up the equivalent exposed areas of the shaft and the roadway to obtain the total equivalent exposed area of the present situation of the mining area, and substituting the three-dimensional hydrogeological parameter model to obtain the initial equivalent water inflow; when the deviation between the initial equivalent water inflow and the present situation of the total measured water inflow is greater than the set deviation threshold, the local back-calculation calibration is carried out on the water conductivity parameters in the back-calculation target area to obtain the present situation calibration model; based on the present situation calibration model, the normal water inflow of the mine and the maximum water inflow of the mine are predicted in the subsequent production stage; by establishing the water inflow equivalent quantitative constraint calibration model, the present application can realize the partition parameter adjustment and guarantee the reasonable and interpretable parameters, and greatly improve the water conductivity channel identification and water inflow prediction accuracy.

The invention provides an anti-clogging composite drainage network and a preparation method thereof, and relates to the technical field of drainage networks. Comprising a net core and geotechnical cloth fixedly arranged on the two sides of the net core, the net core sequentially comprises an inner core and an outer core from inside to outside, the inner core is glass fiber reinforced HDPE, and the outer core is a polyurea coating; the geotechnical cloth is PP + ES geotechnical cloth. The problems that a net core is poor in compression resistance, low in hydraulic conductivity and low in transverse stretching, and geotechnical cloth is poor in acid and alkali resistance are solved.

The invention discloses a storage medium, and an underground water pollution early warning method, device and equipment. The method comprises the following steps: constructing a tracing test well group for a tracing test; sampling analysis of underground water is carried out through observation points at different monitoring depths in the tracer test well group, and tracer agent concentration penetration curves at different monitoring depths are obtained; a groundwater flow and solute transport coupling model is established and calibrated, and a spatial distribution field containing hydraulic conduction coefficients of aquifers of different depths is obtained; identifying groundwater priority channels of the target plot at different depths; determining the hydraulic gradient from the pollution source to the potential risk receptor, and calculating the average underground water flow velocity on the priority channels at different depths according to the average value of the hydraulic conduction coefficients of the priority channels and the effective porosity of the stratum; determining a priority channel for installing a monitoring device according to the sequence of the average underground water flow velocity; according to the invention, the installation number of monitoring devices can be reduced, so that the layout cost and the maintenance cost are reduced.

The utility model belongs to the technical field of soil saturated hydraulic conductivity measurement, and particularly relates to a simple soil saturated hydraulic conductivity measurement device which comprises an upper fixing plate and a lower fixing plate, the lower fixing plate is mounted below the upper fixing plate, and a water outlet pipe is mounted at the bottom of the lower fixing plate; the lifting mechanism is used for automatically lifting the upper fixing plate and comprises fixing rods vertically installed at the four corners of the top of the lower fixing plate and springs arranged on the four fixing rods in a sleeving mode, and the top ends of the four fixing rods movably penetrate through the upper fixing plate; the upper fixing plate can be always kept suspended above the lower fixing plate through the lifting mechanism, at the moment, the distance between the upper fixing plate and the lower fixing plate is larger than the height of two overlapped cutting rings, when the cutting rings are placed, the overlapped cutting rings are directly placed on the top of the lower fixing plate, and therefore the cutting rings can be placed conveniently. The upper fixing plate does not need to be disassembled additionally, and the step of installing the cutting ring is simplified.