200 results about "Hydrogeology" patented technology

The invention provides a trough for simulating groundwater pollution. The simulated trough at least comprises a trough which is internally filled with an aquifer medium, an aquifuge medium and a lens which are used for simulating typical hydrogeology unit; the simulated trough is provided with an underground water recharge area, a runoff area and a discharge area sequentially from the trough head and the trough body to the trough tail; a hydraulic control device supplies water from the underground recharge area located at the trough head; the runoff area at the trough body comprises a water-distribution and water-rock interaction section containing a porous barrier and a pollution restoration device; the water is discharged out from the discharge area located at the trough tail; the hydraulic control device comprises at least two water boxes with adjustable height; the two water boxes are arranged at two ends of the trough body respectively; a water level difference exists between the two water boxes so as to provide an underwater power field; a plurality of monitoring holes and contamination injection holes are arranged above the trough; and the monitoring holes are connected with the monitoring system. The simulated trough for simulating the groundwater pollution has the advantages of integrating simulating, monitoring and restoring functions into a whole.

The invention relates to the field of controlling underground water inrush disaster for mining projects and relates to a comprehensive treatment method of mine water inrush. The method includes the steps of setting a mine hydrogeology observation network; measuring a mine underwater supply area, a mine drainage area and a mine runoff area; exploring and measuring a water guide passage and fissures of the mine underwater supply area; determining and implementing a grouting curtain blocking scheme of the mine underwater supply area; designing and implementing a drainage treatment scheme of the mine drainage area, and after implementing the grouting curtain blocking scheme, performing underwater drainage treatment in the mine drainage area; implementing a scheme for dynamic monitoring of mine underwater level and information-based dredging and blocking treatment, during underwater drainage treatment in the mine drainage area, and dynamically monitoring the underwater level in the mine runoff area to finish the scheme.

The invention discloses a coal bed gas multilateral well recovery control stimulation device, which comprises a main pipeline and at least two branch pipelines, wherein the front end of the main pipeline is connected with an air exhaust device used for simulating recovery control; the rear end of the main pipeline is communicated with the front ends of all the branch pipelines; the rear ends of all the branch pipelines are communicated with each other and are connected with a hydraulic pressure input device and/or a gas pressure input device; the main pipeline and the branch pipelines have the same structure and are coal reservoir simulation pipelines; and a flowmeter, a pulverized coal filtering device and a coal sample container are sequentially arranged on the coal reservoir simulation pipeline from the front to the rear. The coal bed gas multilateral well recovery control simulation device is developed under the conditions that the pressure transmission change is complex during multi-branch horizontal well recovery, the water yield and the gas yield are instable and the recovery is difficult to control, and different coal structures, different hydrogeology conditions, different permeability and different reservoir pressure conditions are simulated, so that the pressure transmission radius, the water yield, the gas yield and the pulverized coal changes during recovery are found out under different conditions.

The present invention discloses a scanning electron microscope image pore identification method based on artificial intelligence, belonging to the field of hydrogeology. The present invention relatesto a rock and soil sample pore parameter obtaining method based on scanning electron microscope images. For the deficiencies that a traditional image segmentation method is low in identification precision of the electron microscope image pore, the pore identification precision and the parameter setting are closely related and the automatic image processing cannot be performed, a deep learning opensource model caffe based on a convolutional neural network is employed to automatically identify the pores in the scanning electron microscope images through a self-learning function of the artificial intelligence by means of the artificial intelligence. The artificial intelligence method provided by the invention can overcome the deficiencies of a current threshold value method, an edge detection method and a neural network method and can greatly improve the identification precision of the pores.

The invention discloses a quantitative prediction method of the clastic rock aquifer water yield property of a working seam roof and floor. The method comprises the following steps of: (1) determining main control factors of the clastic rock aquifer water yield property; (2) determining roof and floor rock stratum disturbance ranges caused by coal seam exploitation; (3) evaluating deposition characteristics of a researched area; (4) carrying out quantitative evaluation on the geological construction complexity degree of the researched area; (5) construction a lithological structure-geological construction prediction model, and comprehensively evaluating the clastic rock aquifer water yield property; and (6) carrying out scientific division and quantitative evaluation on the clastic rock aquifer water yield property. The method provided by the invention overcomes the defect that former people fail to effectively evaluates the clastic rock aquifer water yield property under the condition of deficient hydrogeology data.

The invention brings forward a method and apparatus for obtaining controllable source audio magnetotelluric (CSAMT) apparent phase information, and relates to the field of coalfield hydrogeology and geophysics. The method comprises the following steps: obtaining CSAMT electric field component potential difference data; through the potential difference data, obtaining apparent resistivity data; and according to the apparent resistivity data, calculating apparent phase data by use of a ratio. According to the invention, restrictions of a "remote area" are removed, under the condition of lack of magnetic field data, the apparent phase information is obtained by use of electric field single component data, and thus an important reference basis is provided for CSAMT data interpretation.

The invention relates to a geological disaster prediction system and method based on a porous media fluid-structure interaction model. The geological disaster prediction system and method based on the porous media fluid-structure interaction model comprises the following steps that geological parameters of a geological area to be predicted are collected; according to the geological characteristics and geological parameters of the geological area to be predicted, a hydrogeology concept model is built; according to the geological disaster type to be predicted and the geological characteristics of the area to be predicted, a finite element method is adopted to convert the hydrogeology concept model into a corresponding three-dimensional underground water mathematic model, and the displacement of the geological area to be predicted and the simulation result of distribution situation of stress along with space and time are obtained; the simulation result is output in the mode of image and/or data characters, and the simulation result is used for describing flowing of water among gap media and the sedimentation situation of underground soil; the occurrence time, the geological range and the forming mechanism of the geological disaster are predicted, and a solution scheme is given. The geological disaster predication system and method based on the porous media fluid-structure interaction model can predict geological disasters such as land subsidence, foundation settlement, landslide, debris flow, operation speed is high and accuracy is good.

The invention relates to a method used for measuring the vertical saturation permeability coefficient of soil, belonging to the hydrologic survey field. In the method, the devices such as a single ring, a self recording level meter and a soil moisture content tester are adopted for measurement; then, according to the observed water-level fluctuation process of the single ring, by adopting the soil water motion computing method of Philip and Nestingen, a computational formula of the water-depth variation for describing the single-ring falling head permeability test is elicited, and the vertical saturation permeability coefficient of the soil can be calculated by adopting the principle of least square. The method can be used for measuring the vertical saturation permeability coefficient of the soil outdoors quickly and accurately. The instruments need little water, the devices are simple, the outdoor carrying is convenient, and the radius of the permeated single ring is not limited when in measurement, therefore, the method can be used for measuring the permeability coefficient of the soil at large scale. In addition, the method can be used for measuring the vertical saturation permeability coefficient of the soil in the water conservancy industry, the hydrogeology industry and the irrigation and water conservancy industry and is easy to be promoted and used.

The invention discloses a water retention method of open coal mining frozen water-bearing stratum, which is applicable to the technical field of coal mining and environmental protection. The method includes steps of exploring distribution content of underground water-bearing stratum of a zone through hydrogeology drilling; practicing a freezing circle interception on the underground water-bearing stratum in a well field scale by an artificial cooling method, and preventing the underground water out of the well field mining scale from discharging to an open mine pit. The water retention method cannot disturb normal production activity, and can effectively prevent underground water body at periphery of the well field from discharging towards the open mine pit, maintain the underground water level at the peripheral zone, and effectively protect the ecological environment at surrounding of the mine zone; particularly, the method is applicable to the water retention and mining in the severely cold opencast working zone in the west part; the local climate condition can be fully utilized to reasonably reduce the energy consumption from practicing the embodiment; the method is economic and environment-friendly, and has very high reliability and practicability.

The invention discloses an experiment device for simulating accumulation and migration of solutes of valley plain zones and a method. The experiment device comprises an aeration zone and aquifer medium simulating box body, a water flow and solute supply system, a permeating, water collecting and draining system and a spraying simulating device. The experiment device is capable of achieving the processes of simulating lateral permeation of river to an aquifer, simulating infiltration and vertical supply of rainfall and river, simulating migration and accumulation of soil medium solutes, and thelike, is also capable of simulating drawing of water flow fields and solute concentration fields of different positions, and is further capable of carrying out back calculation for soil or other medium parameters through water flow transportation or solute migration experiment. The experiment device and the method are applied to scientific research and teaching guidance in aspects such as hydrogeology, edaphology and environtology.

The invention provides a geotechnical parameter and property tester capable of simultaneously testing the specific yield and osmotic coefficient. The geotechnical parameter and property tester comprises an evaporation-preventing and gas discharge device, an experiment section, a water level observing device, a water supply device with a controllable water head, a water discharge device with a controllable water head and a water head adjusting and fixing device. The geotechnical parameter and property tester has the advantages that the tester is simple in structure, convenient to use, capable of simultaneously and accurately testing the geotechnical osmotic coefficient and specific yield and promising in application prospect; the tester is widely applicable to hydrogeology researches, and the tester can be used as a teaching instrument to help students well understand the testing principles of the specific yield and osmotic coefficient; the tester is applicable to underground water resource balance calculation, phreatic water dynamic prediction, shallow groundwater withdrawal quantity calculation, depth and interval calculation of farmland draining ditches and underground pipes, farmland irrigation and draining calculation, calculation of hydrogeological parameters such as the recharge coefficient from irrigation water infiltration and the recharge coefficient from rainfall infiltration, and various researches related to underground water.

The invention discloses a method for determining a horizontal seepage channel of a runoff area by adopting a tracing technology. According to the method, on the basis of karst region hydrogeology condition understanding, existing hydrogeology observation holes in a region are firstly selected, water level unified measurement is carried out, an underground water flow field is drawn, hydraulic connection among the holes is determined, then a tracing test is arranged, and the horizontal apparent flow velocity in the region is calculated; secondly, a representative drill hole is selected in a targeted manner to carry out long-term monitoring on underground water temperature and conductivity indexes, inflection points of underground water movement in the drill hole are judged, the occurrence depth of a horizontal seepage channel is determined, and the flow velocity of underground water in the drill hole in the vertical direction is calculated; and finally, the difference between flow velocities in the vertical direction and the horizontal direction is comprehensively analyzed to determine a seepage channel. The invention provides scientific basis and decision support for karst water system protection and karst water resource management.

The invention relates to a three-drop distance non-steady flow dewatering test method for probing mine hydrogeology. According to the technical scheme of the invention for solving the problem, steady flow and non-steady flow dewatering tests are combined for a three-drop distance non-steady flow dewatering test; by implementing the dewatering test, the water storage property of a drainage water-bearing layer of a mine is evaluated based on the falling rate of water level of observation holes according to acquired test information; the watery property of the drainage water-bearing layer is evaluated by virtue of unit inflow of each drop distance and the draining property of the drainage water-bearing layer is evaluated according to a ratio of drawdown and the water inflow. The method not only can probe hydrogeological conditions of the mine in multiscales, but also can acquire abundant test data, and provides probability of establishing a mine inflow prediction model and predicting the mine inflow under a drainage water condition in the future by various methods such as a flow-drawdown correlation curve method, a steady flow analytical method, a non-steady flow analytical method and a numerical simulation method, thereby providing guarantee for correctly evaluating hydrogeological conditions of the mine.

The invention relates to a method for judging leakage of a waterproof curtain of a foundation pit by using an artificial heat source and the temperature tracing of underground water. The method comprises the following specific steps of: 1) performing geological exploration of geotechnical engineering and field survey to determine the relative hydrogeology parameters of a targeted foundation pit, wherein the relative hydrogeology parameters comprise an osmotic coefficient, a thermal coefficient, a water storage coefficient and the like; 2) reasonably arranging observation wells inside and outside the pit by using the original well site to ensure that two sides of the waterproof curtain covering the foundation pit are not leaked; 3) measuring the initial temperature field parameters of drilled holes inside and outside the targeted foundation pit on site to obtain the distribution characteristic, the normal value and the like of the foundation pit; 4) applying the heat source to the drilled hole outside the foundation pit to ensure that the temperature in the drilled hole outside the foundation pit is raised; and 5) measuring the temperature in the drilled hole inside the foundation pit, analyzing and judging according to the obtained initial temperature field value, reasoning by combining knowledge of thermodynamics, and judging and positioning the possibly leaked points. The method is definite in principle and high in adaptability; under the condition that the original observation well is utilized, the observation well can be increased appropriately; the leakage of the foundation pit is judged by applying the heat source into the drilled hole outside the pit actively; and the temperature field of the underground water of the observation wells is analyzed and judged by combing the knowledge of thermodynamics, so that the double aims of judging and positioning the leakage of the foundation pit can be fulfilled quickly and conveniently.

The invention relates to an analog simulation material of a water-resisting layer in fluid-structure interaction and a preparation method of the analog simulation material, belonging to the technical field of hydrogeology and mining combined. The analog simulation material of the water-resisting layer in fluid-structure interaction is prepared from the following components: medium-coarse sands, gypsum, calcium carbonate, paraffin and vaseline, wherein the adulterate amount of paraffin in mass is greater than 8% of the sum of medium-coarse sands, gypsum and calcium carbonate but less than 15% of the sum of the medium-coarse sands, the gypsum and the calcium carbonate. The invention further provides a method for preparing the analog simulation material of the water-resisting layer in fluid-structure interaction. The analog simulation material of the water-resisting layer in fluid-structure interaction, which is provided by the invention, has the characteristics of being good in water resistance, maintaining the mechanical properties and providing beneficial reference for analog simulation and the like.

The invention pertains to a method for preparing derivatives of the pyrazolinylnaphthalic acid having the general formula where Ar1 and Ar2 are unsubstituted or substituted phenyl radicals bearing in the para position an alkylated or acylated oxy- or amino group, or a polynuclear aryl radical, and Ar3 is a substituted N-naphthalimid or 1,8-naphthylene-1',2'-benzimidazole. Compounds ofthe above general formula are high-efficient red organic luminophors and are used widely as luminescent components of dyes for plastics and liquid scintillators, in hydrogeology to study water streams, to label the chemical industry wastewaters, as laser dyes, etc.

The invention belongs to the technical field of hydrogeology, earth science, environmental science and engineering research and provides a one-dimensional simulator of solute migration and transformation in deep phreatic water, which is high in safety and simple. The one-dimensional simulator comprises a water tank, a booster pump, a one-way valve, a safety valve, an aquifer dielectric column with special flange structure, a needle valve and a sampling device that are connected sequentially in succession, the aquifer dielectric column with the special flange structure is placed in a thermostatic control unit working chamber for controlling temperature. The use of the one-dimensional simulator has the following advantages that the simulator is simple in design, easy to operate and convenient to maintain, temperature and hydraulic pressure controlling is accurate, adjusting is convenient, the simulator can simulate a hydraulic pressure up to 10 MPa, is suitable for an experimental environment at 4-65 DEG C under pH 6.5-9, can effectively simulate pressure of the deep phreatic water as well as a low-temperature geothermal environment, can be operated stably in a long time and is free of limitations from ambient temperature.

In the prior art, mine hydrogeology inside and outside border hydraulic power nature is determined according to single index qualitative analysis or even theoretical analysis. The invention discloses a ration determination method which utilizes multiple indexes, qualitatively analyzes and studies from multiple aspects to determine the mine hydrogeology inside and outside border hydraulic power nature, analyzes and studies various control factors of the mine hydrogeology inside and outside border hydraulic power nature, collects data, builds an ANN mathematical model, simulates, evaluates, predicts, and develops an information system. The ration determination method has the advantages of analyzing and studying various control factors of the mine hydrogeology inside and outside border hydraulic power nature, adopting the multiple indexes, analyzing and studying from multiple aspects to determine the mine hydrogeology inside and outside border hydraulic power nature, introducing the ANN technology into a determination method of the mine hydrogeology inside and outside border hydraulic power nature, and having enough precision.

The invention provides a design method used for segmented intercepting of a debris flow flexible protection system. The method comprises the steps that according to hydrologic survey data, the size and hydrogeology information of a debris flow groove of a pedestrian accessible area are cleared; the number of segmented intercepts of the debris flow flexible protection system is determined accordingto the hydrologic survey data; the impact effect Fd of debris flow, the component Fg of gravity of an accumulation body on intercepting units, and frictional resistance Ff of the component of the gravity of the accumulation body on the normal of the groove are determined separately, and the resultant force is the load F acting on the debris flow flexible protection system; a finite element modelis built, the load F is equally distributed on mesh nodes, and the internal force, deformation and displacement of each component in the system are calculated; the peak internal force of each component like meshes and supporting ropes is extracted for strength checking calculation; and structure design of connection between structural steel and upper and lower supporting ropes, connection betweensteel wires and anchor rods and the like is conducted. The design method can be used for segmented intercepting of the debris flow flexible protection system.

The invention provides a deep water-rich overlying strata thick coal seam mining composite power disaster monitoring early warning system and method. The method includes the steps: acquiring coal seammining technical conditions and mine hydrogeology base data; preliminarily judging possible disaster conditions of a deep thick coal seam mining working surface; evaluating and analyzing working surface rock burst dangerousness by a rock burst disaster analysis and early warning module in real time; performing working surface sudden water burst disaster analysis and judgment on the acquired information by a working surface sudden water burst analysis and early warning module; giving working surface composite power disaster occurrence mechanisms and early warning results by comprehensive analysis of an early warning platform; comparing the results and early warning standards to provide a treatment method. The system is scientific, safe, practical and high in operability, and integrated monitoring and early warning and integrated control of deep water-rich overlying strata thick coal seam mining composite power disasters are conveniently achieved.

The invention discloses a proper water supply position intelligent recognition technology based on multi-source hydrogeology survey information. The intelligent recognition technology establishes an analytic hierarchy model (quantitative analysis model) by taking hydro-geological drilling, a plane hydro-geological map, a hydro-geological profile map, underground water dynamic monitoring data and the like as data sources, and taking a geography, a water bearing ground, a reservoir structure, an underground water level, an underground water flow direction, an underground water quantity, water quality and the like as recognition factors; the recognition factor information about the water supply survey hydrogeology on various hydrogeology survey spatial maps is automatically extracted by integrating the geographic information system (GIS) of the analytic hierarchy model, using a computer technology and the spatial analysis function of the GIS and combining expert knowledge, and a districtsuitable for water supply is rapidly evaluated and recognized according to a weight and a water-rich degree evaluation index endowed by each recognition factor so as to avoid the disadvantage of randomness of qualitative and empirical analysis site selection.

The invention relates to an underground water connectivity detection method for obtaining the underlying surface conditions of a distributed hydrological model, which belongs to the field of hydrogeology and particularly relates to a detection method for providing the underlying surface conditions for the distributed hydrological model. The method provided by the invention comprises the followingsteps: selecting a target river basin; carrying out the alternate water pumping measurement on the wells in the target river basin; monitoring the water-level variation of each well in real time by utilizing an automatic water-level tracker; and obtaining the flow direction of each well by utilizing an improved electric conductivity single-hole dilution method. In the method provided by the invention, the water-level variation course of each observation well in the water pumping course is obtained in real time by utilizing the automatic water-level tracker; the electric conductivity single-hole dilution method is improved; the flow direction of each observation well is obtained when the water pumping is carried out; and the judgment for the connectivity of underground water is simple, rapid and accurate.

The application provides a multi-channel transient electromagnetic (MTEM) virtual wave field extraction device and method and relates to the field of coalfield hydrogeology and physical geography. The method comprises steps of extracting virtual wave field data of a full time domain diffusion field; extracting virtual wave field data of each split window diffusion field; and performing related superposition of a full time domain extraction result and split window extraction results, and taking the superposition results as a virtual wave field extraction result. A stable and smooth virtual wave field waveform curve can be obtained, and the anti-interference capability is strong.

The invention discloses a soil stratified sampling device for hydrogeology, wherein the device comprises a mounting plate; a pressing mechanism is arranged at the upper end of the mounting plate and extends to the lower portion of the mounting plate, a sampling assembly is arranged on the lower portion of the pressing mechanism, and a stratification mechanism is arranged in the sampling assembly; a storage battery pack is fixedly mounted on the rear portion of the upper end of the mounting plate, a control table is fixedly mounted on the front portion of the upper end of the mounting plate, the control table is electrically connected with the pressing mechanism, the stratification mechanism and the storage battery pack, and a status lamp, a power switch and a control switch are arranged at the upper end of the control table; and the left end and the right end of the mounting plate are each fixedly provided with two connecting rods which are symmetrical front and back, and the upper ends of the two connecting rods are jointly and fixedly provided with a storage frame. According to the soil stratified sampling device for hydrogeology, stratified sampling can be conducted on soil, soil stratification is clear, the sampling accuracy is high, the sampling assembly can be detached and replaced, practicability is high, the intelligent degree is high, and use is convenient.