1239 results about "Water sampling" patented technology

The invention relates to the technical field of water level surveying devices, and discloses a hydrogeological multi-layer underground water level surveying device and a surveying method.The hydrogeological multi-layer underground water level surveying device comprises a support and a water sampling barrel, the support is provided with a winding mechanism, and the winding mechanism is used for adjusting the sampling height of the water sampling barrel; the upper part of one side of the water sample sampling barrel is communicated with a liquid inlet pipe, and the bottom of the water sample sampling barrel is fixedly connected with a balancing weight. In the sampling process, large-particle impurities in water are blocked through the filter screen, the impact force of water flow can be converted into the rotating force of the blades, the rotating shaft and the scraping rod, the function of automatically cleaning the impurities in the sampling process is achieved, and the rope winding condition caused by uncontrollable winding position is prevented through the adjusting mechanism; the dustproof mechanism prevents dust and stones from falling into the hydrological hole to affect sampling of a water sample in the surveying process, and the highest water level in the hydrological hole can be accurately known through the water level monitoring mechanism.

The invention relates to the technical field of water sampling, in particular to a floater fixed-depth sampling device for polluted water, which comprises a lifting rope, a sampling barrel, a floating ball and a pull rope, the lifting rope is sleeved with a sliding frame in a sliding mode, and the floating ball is horizontally installed on the sliding frame in a sliding mode and connected with the sliding frame through an elastic piece. A winding unit is arranged on the sliding frame; a piston plate is mounted in the sampling barrel in an up-down sliding manner, is connected with the sampling barrel through an elastic rope, and is connected with a lifting rope through a piston column. The stopping assembly is arranged to limit movement of the piston column, the releasing amount of the pull rope is adjusted according to movement of the floating ball under the action of water flow, the stopping assembly is unlocked through the pull rope connected to the floating ball, when the sampling barrel reaches the sampling depth, the pull rope is just tightened to relieve limitation of the stopping assembly to the piston column, and it is guaranteed that the sampling barrel conducts sampling at the sampling depth; the influence of movement of the floating ball under the water flow effect on the sampling depth of the sampling barrel is eliminated, and sampling is more accurate.

The invention discloses a method for completing an autonomous deep-sea exploration task by a deep-sea cross-domain unmanned aerial vehicle. The method comprises the following steps: determining a target area; taking off to a specified height from the sea level, receiving a task execution command and then flying to a target area; when the relative distance between the current position and the coordinates of the target area reaches a preset value, descending; when it is detected that the device is contacted with seawater, the device dives through gravity; when it is detected that the set depth is reached, the propeller is restarted, and the detection task is executed; after the detection task is completed, the standby battery is rejected and ascends; after leaving the water surface, rising to a specified height and switching to a homeward flight mode; and when the deep-sea cross-domain unmanned aerial vehicle is within the sight distance range, a manual landing task is executed. The invention further discloses the deep-sea cross-domain unmanned aerial vehicle. According to the unmanned aerial vehicle and the method, autonomous switching operation between an air medium and an underwater medium can be realized, and the unmanned aerial vehicle has the capability of autonomously completing detection and water body sampling in an extreme deep sea environment.

The invention relates to the technical field of pollutant detection, and discloses a deepwater sampling system and method, and the system comprises a collection module which is configured to determine a to-be-monitored water area, collect the area of the to-be-monitored water area, and determine an initial sampling frequency according to the area of the to-be-monitored water area; the judgment module is used for comparing the heavy metal ion change rate with a heavy metal ion change rate threshold value and judging whether the initial sampling frequency is adjusted or not according to a comparison result; the adjusting module is used for judging whether to correct the adjusted sampling frequency or not according to the real-time characteristic data so as to obtain a corrected sampling frequency; the processing module is configured to collect organic matter content data of the to-be-monitored water area according to the corrected sampling frequency, and determine the pollution level of the to-be-monitored water area according to the organic matter content data and the heavy metal ion concentration data. According to the invention, the accuracy of data acquisition is improved, and the high efficiency and adaptability of the sampling activity are ensured through real-time monitoring and dynamic adjustment.

The invention relates to the technical field of water quality monitoring, in particular to a distributed raw water quality real-time monitoring system which comprises an underground water sampling module, a sample analysis module, a water quality feedback terminal and a data storage terminal. And finally, the water body quality corresponding to the underground water quality in the target raw water body area is fed back to a system interface for interface display, the water quality evaluation can guarantee the safety and sustainability of the water resource, and the water quality evaluation efficiency is improved. Health risks and economic losses caused by water quality pollution are avoided, and underground water quality evaluation has direct influence on public health. Various health problems may be caused by drinking or using the water for a long time, the drinking water safety of residents can be guaranteed, health risks can be found and treated in time, and therefore the health of the residents is protected.

The invention discloses a method for measuring calcium and magnesium in an environmental water body by using a smart phone graphic colorimetric method, which belongs to the technical field of environmental monitoring and comprises the following steps: measuring a calcium and magnesium total amount standard curve, measuring a magnesium content standard curve and measuring the total amount of calcium and magnesium in an actual water sample. On the basis of a smart phone colorimetric method, water collection sampling, mixed reaction and photographing measurement are performed, and the test time of one sample can be controlled to be 10 min. The method is rapid, accurate and high in sensitivity, can be used for real-time field in-situ determination, and meets the requirements of rapid in-situ quantitative analysis and determination of an environmental water sample.

The invention provides a rainfall sampler for meteorological monitoring, and relates to the technical field of water sampling, the rainfall sampler comprises a placing box, and a water quality collecting mechanism is arranged in the placing box; the water collecting mechanism comprises a shaft rod, a circular plate, a turntable, an up-down moving part and an annular concave-convex plate; the shaft rod is connected into the containing box, the circular plate is connected with the shaft rod in the containing box, a gear disc is arranged on the shaft rod, arc-shaped grooves are formed in the gear disc and the circular plate, the rotating disc is in threaded connection with the shaft rod, the up-down moving part is slidably connected to the rotating disc and is opposite to the arc-shaped grooves, the annular concave-convex plate is fixedly connected into the containing box, and the up-down moving part annularly rotates on the annular concave-convex plate. The inner top wall of the placing box is communicated with an elastic plugging pipe mechanism, under the assistance of an annular concave-convex plate, up-down moving pieces are inserted into arc-shaped grooves in a circular plate and a gear disc at intervals to control the circular plate to rotate and ascend, when the circular plate rotates, respective sampling of a plurality of sampling bottles is achieved, and when the circular plate ascends, water overflow is avoided under the assistance of the elastic plugging pipe mechanism.

The invention relates to the technical field of new-generation information, and discloses an underground water quality monitoring equipment control method, system, equipment and medium, the method comprises the following steps: connecting sampling equipment to obtain sampling equipment information; acquiring an underground water sampling task, and determining sampling task monitoring parameters; task interval time span analysis is carried out, and an identification control relation is established; and performing matching analysis according to the running state, the sampling data and the sampling task monitoring parameters, performing control identification, and positioning the equipment layout position to perform equipment control operation. The technical problems that in the prior art, underground water quality monitoring equipment is high in continuous operation failure rate, large in energy consumption and incapable of achieving centralized management are solved, and the technical effects that equipment standby, sleep awakening, remote control and multi-equipment networking management are achieved, equipment operation stability is improved, energy consumption is reduced, and management efficiency is improved are achieved.

The invention provides an underground water constant-speed sampling device, and belongs to the technical field of underground water sampling, the underground water constant-speed sampling device comprises a box body, a water inlet pipe is horizontally arranged at the upper part in the box body, the left end of the water inlet pipe penetrates through the left side wall of the box body and is connected with a water suction pump, the right end of the water inlet pipe is provided with a pressure relief assembly, and the bottom of the water inlet pipe is vertically provided with a plurality of water outlet pipes; the underground water constant-speed sampling device comprises a box body, a water inlet pipe and a plurality of water outlet pipes, the water outlet pipes are sequentially arranged in the box body at intervals in the length direction of the water inlet pipe, a sampling bottle is placed below each water outlet pipe, and a first fixing assembly is arranged at the position, located at each water outlet pipe, of the water inlet pipe. The problems that sampling personnel are inconvenient to sample and the working efficiency is low are solved, stable control over the water flow speed in the underground water sample collection process is achieved, automatic control over the sample collection amount is achieved, and air bubbles generated by air mixing in the sampling process are effectively avoided.

The utility model relates to the technical field of underground water sampling, and discloses underground water sampling equipment with well washing and low-flow-rate sampling functions, which comprises an aquifer, a well wall arranged in the aquifer, a screen pipe fixedly connected to the inner wall of the well wall, a centrifugal pump arranged in the well wall, and a well washing pipe fixedly connected to an outlet of the centrifugal pump. According to the underground water sampling equipment with the well washing and low-flow-speed sampling functions, through the arranged cleaning mechanism, when impurities adhering to the outer side of a filter cylinder need to be cleaned, an inserting block can be moved out of the interior of a through opening, limiting is canceled, the filter cylinder can be pulled downwards, an inserting column is pulled out of the inner wall of an inserting base, and the filtering cylinder is pulled out; and similarly, the filter cartridge can be conveniently mounted under the action of the inclined surface of the insertion block, so that good mounting and dismounting efficiency can be achieved while cleaning is realized, the time consumed by workers is further saved, and the operation convenience of the device is improved.

The invention provides an underground water sampling device with a protective structure, and relates to the technical field of underground water sampling, the underground water sampling device comprises a sampling bottle, the bottom of the sampling bottle is sleeved with a protective sleeve; a mounting cover is arranged at the top end of the sampling bottle; a sealing plug is arranged at the position, close to the top end, in the sampling bottle, two hooks are adjusted in the opposite directions to relieve hooking of a limiting clamping block, the sealing plug is driven to slide downwards along a limiting frame through the rebound pulling effect of a first extension spring, and underground water can enter the sampling bottle through a gap between a water inlet and the limiting frame; opening can be controlled according to the underground water collection position, accurate collection of different liquid layers is achieved, the accuracy of sample detection is guaranteed, and the problems that in the process of sampling different water levels, a sampling bottle needs to be controlled to be adjusted to be opened and closed, operation is troublesome, and time and labor are wasted are solved. And unsteady opening and closing control is easy to cause mixing of groundwater at different depths, so that the accuracy of groundwater analysis and detection is influenced.

The invention relates to the technical field of water body sampling, in particular to a water environment water quality monitoring and sampling device for water body pollution tracing based on a multispectral unmanned aerial vehicle, which comprises an aircraft, a quantitative sampling device arranged below the aircraft and a recovery device for collecting a sampled water body, the quantitative sampling device comprises a sampling barrel, an upper floating part arranged above the sampling barrel, a rotating ring rotating along with the movement of the upper floating part, and a mounting part arranged at the top end of the butt joint part. According to the water environment water quality monitoring and sampling device for water pollution tracing based on the multispectral unmanned aerial vehicle, after the bottom of the sampling barrel moves downwards into the outer sleeve funnel along with the aircraft, a plate surface convex pipe jacks up the position of a liquid blocking plug, so that a collected water sample is poured into a sampling test tube, manual intervention is reduced, and meanwhile, the sampling efficiency is improved. The next round of water body collection work can be quickly carried out.

The utility model relates to the technical field of underground water sampling, in particular to an underground water sampling device which comprises a mounting disc, a balancing weight is fixedly mounted on the bottom surface of the mounting disc, and a switching mechanism is rotatably mounted in the center of the top surface of the mounting disc. A plurality of mounting seats which are distributed in a circumferential array manner about the axis of the mounting disc are fixedly mounted on the top surface of the mounting disc, and sampling bottles are detachably and fixedly mounted in the mounting seats; the sampling bottle comprises a bottle body, the top end of the bottle body is of an open structure and is provided with a bottle cap in a threaded mode, and a sealing assembly used in cooperation with the switching mechanism is arranged in the bottle cap; a connecting block is fixedly mounted at the top end of the switching mechanism and is fixedly connected with a rope; according to the utility model, the switch mechanism is matched with the sealing assembly in the bottle cap, so that the sampling bottle can be in a sealed state after sampling is completed, water in the sampling bottle is prevented from being mixed, and the accuracy of subsequent detection and analysis results is improved.

The invention discloses a method and system for detecting heavy metal pollutants in water based on big data, and relates to the technical field of water quality detection.The method comprises the steps that basic characteristic values of a water area to be detected are obtained; processing to generate a basic pollution condition performance value of the to-be-detected water area; processing, analyzing and generating water sampling execution parameters of the to-be-detected water area; analyzing and generating a single collection period of a water sample collection point of the to-be-detected water area; carrying out water body data acquisition on each water sample acquisition point, processing to obtain a heavy metal pollutant detection result of the water area to be detected, and carrying out early warning feedback; by analyzing basic information such as the water body type of the to-be-detected water area and counting the historical water sample monitoring data and the historical environment monitoring data of the place where the to-be-detected water area is located, heavy metal pollutant fixed-point and fixed-time detection is carried out on the to-be-detected water area, potential factors of heavy metal pollution of the to-be-detected water area are comprehensively considered, and the detection accuracy is improved.

The invention discloses an unmanned aerial vehicle water body fixed-point sampling device, which relates to the technical field of water sampling, and comprises an unmanned aerial vehicle body and a telescopic rod arranged below the unmanned aerial vehicle body, the airflow collecting mechanism is arranged outside the telescopic rod and can be automatically unfolded or folded according to lifting of the unmanned aerial vehicle body; the air collecting disc is located below the telescopic rod and used for collecting airflow; the airflow guiding mechanism is arranged at the bottom of the air collecting disc and used for circularly supplying air to the water surface from inside to outside; a sampling pipe capable of automatically rotating and moving downwards according to lifting of the unmanned aerial vehicle body and a spiral probe installed at the bottom of the sampling pipe and capable of synchronously rotating with the sampling pipe and moving downwards are arranged in the wind collecting disc, and wind power of the airflow guiding mechanism drives the water surface to regularly diffuse water ripples outwards, so that duckweeds are made to be away from a sampling center along with the ripples; water surface fluctuation is reduced, it is ensured that the water sample is not interfered by underwater sediment, and interference of underwater obstacles is further avoided through cooperation with the spiral probe which automatically rotates and moves downwards.

The invention relates to the technical field of underground water sampling, in particular to a sampling device for underground water recharge, which comprises a sampling barrel, the sampling barrel is internally divided by a plurality of partition plates to form liquid storage cavities, a plurality of liquid inlet pipes are arranged in one-to-one correspondence with the liquid storage cavities and are communicated with the tops of the liquid storage cavities, and liquid discharge pipes are arranged at the bottoms of the liquid storage cavities. A pipe sealing mechanism is mounted on each liquid inlet pipe and comprises a one-way valve plate; the cable protection mechanism comprises a fixing support, and the cable support is fixed to the fixing support through a supporting rod. The centering mechanism comprises a connecting rod, a ring seat is fixed at the bottom of the sampling barrel through the connecting rod, and a positioning rod is mounted on the ring seat. Before underground water with different depths is sampled, the one-way valve plate is adjusted to ensure that the one-way valve plate can be opened by water pressure after reaching a certain depth, sampling of underground water at a deeper position is achieved, after sampling is completed, pressure inside and outside the liquid storage cavity is balanced, the one-way valve plate is reset to seal the liquid inlet pipe, and a sample in the liquid storage cavity is prevented from spilling out.

The invention relates to the technical field of sewage treatment, in particular to a dynamic regulation and control system for sewage treatment. The invention provides a sewage treatment dynamic regulation and control system which comprises an inlet water sampler, an outlet water sampler, a sampling switcher, a water quality analyzer and a controller, the inlet water sampler is used for collecting an inlet water sample, the outlet water sampler is used for collecting an outlet water sample, and the sampling switcher is used for sampling the outlet water sample according to a preset time interval. Controlling the water quality analyzer to alternately collect and detect inlet and outlet water samples; the controller receives the alternately obtained detection data, calculates the processing efficiency and outputs a process regulation and control instruction according to the processing efficiency; a plurality of sampling points are monitored through the sampling switcher, the water quality of inlet and outlet water is comprehensively monitored, regulation and control are more accurate, meanwhile, the frequency of automatic sampling is higher than that of manual sampling, and the timeliness of regulation and control is improved.

The invention belongs to the technical field of intermediate frequency furnace management and control, and particularly relates to an intermediate frequency furnace circulating water cooling monitoring system based on the Internet of Things, which comprises a water inlet monitoring unit, a water outlet monitoring unit, a circulating water sampling unit and a touch panel unit, the core parameters of the cooling water of the intermediate frequency furnace are accurately monitored in real time through the sensor technology and based on the Internet of Things, when any parameter exceeds the preset safety range, an operator is reminded to take necessary measures, and equipment overheating or other potential risks caused by insufficient cooling are prevented; the circulating water sampling unit is used for sampling water at the water inlet end of the intermediate frequency furnace and detecting the quality of the sampled water, a user is reminded to treat the circulating water of the intermediate frequency furnace when a circulating water abnormal signal is generated, safe operation of the intermediate frequency furnace is facilitated, the service life of the intermediate frequency furnace is prolonged, and the operation management difficulty of the intermediate frequency furnace is remarkably reduced; and the intelligent level is high.

The invention discloses a sampler for underground water sampling, and belongs to the technical field of hydrogeological prospecting, the sampler for underground water sampling comprises a moving frame, a blocking block and an overturning cover are arranged, and when the sampler is used for assisting underground water sampling, the blocking block and the overturning cover are arranged to improve the shielding and sealing effects of a sampling opening when the sampling opening is not used; a second servo motor can be turned on to drive a blocking block fixedly connected with a telescopic rod to stretch out and draw back along the inner wall of the sampling opening through rotation of a threaded rod, so that the blocking block is not in contact with the sampling opening, and the sampling opening is prevented from being exposed outside to be placed in a diving manner; a threaded sliding rod slides to drive an overturning cover to perform overturning motion through rotation of a second rotating rod, so that the end part of a sampling opening is exposed outside, the effect that the sampling opening is communicated with the inner wall of the sampling box for use is achieved, and the linkage effect of soil prevention and effective sealing on the sampling opening when the sampling box is not used is achieved.

The invention discloses a closed injection-production alternation tubular column based on a canned pump and an injection-production alternation method based on a fixed tubular column. The closed injection-production alternating tubular column based on the canned pump comprises an oil pipe, a perforated pipe connected to the end of the oil pipe, and a positioning steering flow dividing device, an axial switch control valve, a radial switch control valve, the canned pump and a water injection sliding sleeve which are sequentially connected in the axial direction of the oil pipe. In the shaft, the perforated pipe is located in a water injection layer, and the positioning, steering and shunting device is located above a water source layer; the positioning, steering and shunting device comprises a water sampling channel and a water injection channel which are isolated from each other, and the water sampling channel is located on the periphery of the water injection channel. Switching among different production modes of a water injection well, a production well and a water source well can be achieved through one pipe column, immovable pipe column alternation can be conducted at any time according to oil reservoir requirements, the operation cost is saved, and the adjustment operation efficiency of injection and production wells of offshore oilfields is improved.

The invention relates to the technical field of water treatment sampling, in particular to a convenient storable water body sampling device which comprises a sampling barrel, the length of the sampling barrel is adjustable, a plurality of longitudinally-arranged sampling holes are formed in the sampling barrel, and one-way assemblies which are in one-way communication with an inner cavity of the sampling barrel are arranged in the sampling holes; the sampling mechanism comprises a plurality of detachably connected sample storage barrels, and the sample storage barrels are longitudinally and movably arranged in an inner cavity of the sampling barrel; the sampling hole and the sample storage barrel are correspondingly arranged and are detachably communicated, and an external water sample enters the sample storage barrel from the sampling hole during sampling; the top seat is arranged at the top end of the sampling barrel, a driving assembly is arranged on the top seat, and the driving assembly is in transmission connection with the longitudinally-arranged sample storage barrel and used for controlling the sampling process of the sample storage barrel. The device is compact in mechanism and convenient to use, and the length-adjustable sampling barrel can adapt to sampling in water environments of different depths; the one-way assembly prevents the water sample from flowing back and ensures the sampling accuracy; and the detachably connected sample storage barrel is convenient for storage and subsequent analysis of the sample.

The invention discloses a water quality detection sampling device, and particularly relates to the technical field of water sampling, the water quality detection sampling device comprises a center shaft and a shell arranged on the outer surface of the center shaft, water inlet structures used for taking water are arranged on the lower portion of the inner surface of the shell in a bilateral symmetry mode, a sampling structure is arranged in an inner cavity of the center shaft, and a second sliding groove is formed in the upper end of the center shaft; a quick-connecting structure is arranged on the inner surface of the second sliding groove, a connecting groove matched with the quick-connecting structure is formed in the lower end of the center shaft, and guide rails in sliding connection with the shell are symmetrically arranged on the outer surface of the center shaft front and back. Through cooperation of the quick connection structure and the connection groove, the center shaft is quickly disassembled and assembled, and it is guaranteed that the shell smoothly moves along the guide rail; an air tap in the sampling structure pumps negative pressure to enable a water sample to automatically enter a sample storage cavity, a connecting assembly is movably matched with an L-shaped rod and a notch to open a turning plate, an arc-shaped elastic piece assisting component resets to close a channel, it is guaranteed that the sampling time is accurate, the water sample is free of impurities, and the water quality detection efficiency and accuracy are remarkably improved.

The invention belongs to the technical field of ocean sampling, and provides a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling device and a pneumatic throwing type multi-channel self-sinking and floating trace seawater sampling method. The device comprises a portable gas cylinder, a casting track, a self-sinking and floating type trace seawater sampler shell, a fixing frame, a pressure sensor, a control bin and the like, and after a seawater sample is collected, a fixing agent can be injected into the seawater sample to fix microorganisms in the seawater sample and the like. And the self-sinking and floating trace seawater sampler is far away from the trace element precipitation influence area of the scientific investigation ship in a pneumatic throwing manner. Meanwhile, the seawater sampling valve with the engineering plastic valve core and the flow channel is innovatively designed, and the seawater sample bin and the fixing agent bin on the inner surface are coated with engineering plastic, so that the interference caused by trace element precipitation of a metal structure of the sampler in the prior art is avoided.

The invention discloses a device and a method for monitoring the content of pollutants in oilfield wastewater by using hyperspectral data, and relates to the technical field of water sampling and water quality pollutant monitoring. Comprising a sampling shell, a rotating plate is rotatably connected in the sampling shell, the upper side of the rotating plate is fixedly connected with a circumferentially distributed negative pressure sampling barrel, the outer side of the sampling shell is provided with a sliding cylinder, the outer side of the sliding cylinder is slidably connected with a buoy, and the lower side of the buoy is rotatably connected with a circumferentially distributed circular gear. Circumferentially distributed racks are fixedly connected to the outer side of the sliding cylinder, the circumferentially distributed racks are engaged with the adjacent circular gears, and driving rods are fixedly connected to the circular gears. The five racks move downwards and drive the adjacent driving rods to rotate, impurities on the water surface are shifted to the side, and therefore the situation that in the process of lowering the sampling shell, the impurities on the water surface are attached to the outer side of the sampling shell, and the sampling result is affected is avoided.

The present invention relates to a water sampling immersion probe (50) for continuously filtering a water sample from wastewater (14). The water sampling immersion probe (50) includes a distal coarse filter (60) with a porosity of 0.1 to 1.0 mm, a proximal fine filter (70) arranged downstream of the coarse filter (60) and having a porosity of less than 5.0 μm, and a sample suction opening (74) arranged downstream of the fine filter (70). The coarse filter (60) is arranged to not contact the fine filter (70).

The invention relates to a rainfall sampler for meteorological monitoring, and belongs to the technical field of rainfall sampling equipment. Comprising a box body, a water pan arranged at the top of the box body, a rotating assembly arranged in the box body and a plurality of sampling bottles arranged on the bottom surface in the box body, and a plurality of first water inlet holes are formed in the top of the box body; the rotating assembly comprises a fixed shaft fixedly connected to the middle in the box body in the vertical direction, a middle rotating disc located above the fixed shaft, a connecting sleeve arranged at the bottom of the middle rotating disc and rotationally connected to the top end of the fixed shaft in a sleeving mode, and a water leakage hole eccentrically formed in the middle rotating disc. The first drainage cylinder is fixedly connected to the bottom of the middle rotating disc and corresponds to the water leakage hole, a gravity rotating mechanism is arranged between the fixing shaft and the connecting sleeve, and the sampling bottles are uniformly distributed around the fixing shaft. According to the invention, the problem that sampling equipment in the prior art needs power supply and is not suitable for a field working environment is solved.

The invention relates to the field of geothermal water detection, and discloses a geothermal water supply source and circulation depth calculation and determination method, which is used for solving the problem of result deviation caused by influence of bottom layer heat conductivity change during geothermal water source and depth determination, and comprises the following steps of: calculating a representative index of each geothermal well; selecting a representative geothermal well according to the representative index, collecting a final geothermal water sample of the representative geothermal well, carrying out water chemical analysis on the final geothermal water sample, carrying out isotopic tracing analysis on the final geothermal water sample according to a water chemical analysis result, and regularly measuring hydrogen isotope values of a plurality of rainfall sampling points. The gradient of the hydrogen isotope changing along with the elevation is obtained, the geothermal water supply elevation is calculated according to the elevation effect of the hydrogen isotope, a distributed hydrological model is combined with GIS space analysis, the supply area range is optimized, and the scientificity and rationality of geothermal resource development are effectively improved.

The present invention relates to the technical field of seawater sampling, and discloses an underwater robot seawater sampling device and method. Among them, an underwater robot seawater sampling device includes an outer frame assembly. A sampling mechanism is arranged inside the outer frame assembly. The sampling mechanism includes a main driving component, a driving component, an adjusting component and a sampling cylinder. The sampling cylinder is arranged at the bottom of the main driving component. The adjusting component is arranged at the bottom outside the sampling cylinder. The driving component is connected to the bottom of the adjusting component. When the main driving component drives the sampling cylinder to descend to a specified depth, the adjusting component is started to change the bottom of the sampling cylinder from a sealed state to a sampling state to perform seawater sampling at the specified depth; by setting multiple groups of sampling structures, seawater at different depths is sampled and sealed separately. When moving to a certain specified depth, one of the sampling mechanisms is opened for sampling. When moving to the next specified depth, another unused sampling mechanism is opened for sampling.

The invention discloses a lake self-settling layered water sampling device and method, and belongs to the technical field of water quality monitoring. The device comprises a bearing table floating on the water surface, a main control box is arranged in the middle of the bearing table, the bottom of the main control box is connected with a rope-controlled lifting assembly, and the rope-controlled lifting assembly is connected with a self-settling water sampling assembly through a pull rope; the rope-controlled lifting assembly comprises an adjustable-speed motor, a rope winding roller and a depth detection unit, the self-settling water sampling assembly comprises a multi-cavity water sampling barrel and a counterweight cabin, and the main control module coordinates all the assemblies to realize stratified sampling. The invention further discloses a lake self-settling layering water sampling method. The device can accurately obtain water samples in different depths of lakes, and is suitable for scenes of lake ecological monitoring, water quality analysis and the like.

The invention discloses a test device for simulating migration and transformation of pollutants in underground water. The test device comprises a sand box, a water supply system and a drainage system, the sandbox is internally divided into a water inlet well, a water outlet well and a sand tank; the water inlet well adjusts water head height and is connected with the water supply system; the water supply system, the water inlet well and a passage therebetween are sealed; the sand tank simulates an aquifer soil body and is filled with a soil sample or quartz sand; the water outlet well is connected with a drainage system; the water inlet well and the water outlet well are separated from the sand tank through partition plates, a plurality of through holes are formed in the partition plates, and filter cloth is arranged on the surfaces of the partition plates facing the sand tank. A plurality of pore water sampling holes are formed in the front upper part of the sand tank; a plurality of underground water sampling holes are formed in the front lower part of the sand tank; a plurality of pressure measuring holes connected with a pressure measuring pipe or inserted into a soil moisture tensiometer are formed behind the sand tank; water of the water supply system enters the water inlet well and then permeates into the sand tank filler, water in the filler permeates into the water outlet well, and water of the water outlet well is discharged from the drainage system. Compared with a field test, the material and time cost is reduced.