18 results about "Geophysical survey" patented technology

A method for evaluating geological hydrogen source rock in a region is provided. The method includes: collecting magnetic susceptibility data from a plurality of subsurface locations in the region; receiving geophysical survey data of the region, wherein the geophysical survey data comprises geophysical data collected from above ground; tying the magnetic susceptibility data of the plurality of subsurface locations to the geophysical survey data; generating a geologic map of igneous rock, metamorphic rock, or mafic mineral- or iron-rich sedimentary rock within the region based on the magnetic susceptibility data using a model; and determining, based on the geologic map, a target zone of the geological hydrogen source rock with a potential for hydrogen production or with the potential for hydrogen accumulation.

This utility model relates to the field of seismic acquisition cable maintenance technology for deep-sea geophysical survey vessels, specifically, to an underwater cable lifting device and a cable maintenance boat. The underwater cable lifting device includes a lifting section with a lifting section on one side. The lifting section includes a range-extending component, which comprises a first range-extending shell and a second range-extending shell that slide together. A limiting plate is provided at one end of the first range-extending shell, and the second range-extending shell has a groove in which a sliding plate slides. An auxiliary lifting mechanism is provided at the sliding plate, which drives the sliding plate away from the limiting plate when the second range-extending shell moves away from the limiting plate. A detachable support plate is provided on the side of the sliding plate away from the first range-extending shell. The above-mentioned underwater cable lifting device, through the auxiliary lifting mechanism and the support plate, lifts the underwater cable out of the water, thereby facilitating maintenance and significantly improving the efficiency of underwater cable maintenance.

The utility model belongs to geophysical technology field, specifically disclose the rainproof device for geophysical detection system, including the first rainproof module of the electrode and cable connection place of setting in the cover, the first rainproof module includes the first electrode box and the second electrode box, and the first electrode box is connected with the second electrode box through the first pivot, the first electrode box and the second electrode box all include the main box and the extension box, the main box is communicated with the extension box and is provided, the both ends of main box all are set up with the first outlet, still including the second rainproof module of the cover setting in the external switch, the second rainproof module includes the first switch box and the second switch box of buckle connection, the both ends of first switch box and second switch box all are set up with the second outlet, the side of first switch box and the side of second switch box are connected through the second pivot, the other side of first switch box and the other side of second switch box are connected through the buckle. The utility model rainproof device can promote the security and environmental adaptability of geophysical detection system.

The present application relates to the field of quantum magnetic field measurement, and discloses a CSAMT and transient electromagnetic combined detection method for concealed copper-gold mine exploration, comprising the following steps: establishing a survey area coordinate system and arranging comprehensive geophysical survey lines in the survey area; sending alternating current by using the controllable source audio frequency magnetotelluric method along the survey line, and combining a quantum geomagnetic field strength meter to obtain the earth's electromagnetic response data; sending pulse current by using the equivalent counter magnetic flux transient electromagnetic method, and placing a quantum magnetometer on the zero magnetic flux plane of the primary field to obtain the stratum pure secondary field transient decay signal; inputting the data into a noise reduction system, and extracting the noise-reduced data by using an adaptive common-mode noise suppression algorithm; performing inversion processing on the noise-reduced data to obtain a two-dimensional resistivity section and delineate the concealed ore body. The present application overcomes the delay of the traditional induction coil, captures deep and extremely weak signals with high precision, and strips strong interference at the physical and algorithm levels, thereby improving the inversion reliability and ore body positioning accuracy.

A method for evaluating geological hydrogen source rock in a region is provided. The method includes: collecting magnetic susceptibility data from a plurality of subsurface locations in the region; receiving geophysical survey data of the region, wherein the geophysical survey data comprises geophysical data collected from above ground; tying the magnetic susceptibility data of the plurality of subsurface locations to the geophysical survey data; generating a geologic map of igneous rock, metamorphic rock, or mafic mineral-or iron-rich sedimentary rock within the region based on the magnetic susceptibility data using a model; and determining, based on the geologic map, a target zone of the geological hydrogen source rock with a potential for hydrogen production or with the potential for hydrogen accumulation.

The invention relates to the technical field of data calibration, and discloses a geophysical survey data feedback calibration method, which is characterized in that an initial model is established through geological data integration, and a low-resolution region is calculated and identified by using a sensitivity matrix. A multidirectional measuring line array is deployed in an acquisition stage, and the position of a seismic source is dynamically adjusted by monitoring an offset distance distribution heat map in real time. And when frequency spectrum missing is detected, low-frequency seismic source supplementary excitation is automatically triggered. And for the acquisition data missing region, a low-rank tensor completion algorithm is adopted to recover a complete data volume. In the inversion process, long-offset data are preferentially utilized to construct a macroscopic velocity model, and then short-offset reflected wave data are gradually introduced to refine a local structure. And the model uncertainty analysis module automatically identifies a low-confidence region, generates supplementary acquisition coordinates and drives field equipment to implement directional encryption, newly added data is reinjected into an inversion process after being quickly processed, and a continuously optimized closed-loop system is formed.

A geophysical surveying method and assembly applying transient pulses of electric current to an airborne time-domain electromagnetic transmitter to generate a primary controlled electromagnetic field; measuring, using an airborne receiver, a secondary controlled electromagnetic field to generate controlled field data; measuring, using the airborne receiver, a magnetic component of a natural electromagnetic field at an above-ground position to generate first natural field data; measuring, using a ground receiver at a ground station, telluric electrical currents induced by the natural electromagnetic field and / or a magnetic component of the natural electromagnetic field at a ground position to generate second natural field data; merging the first natural field data and the second natural field data into combined natural field data; extracting, from the combined natural field data, off-time natural field data recorded between the pulses; and generating geophysical survey data based on the controlled field data and the off-time natural field data.

This invention relates to the field of data calibration technology and discloses a geophysical survey data feedback calibration method. An initial model is established through geological data integration, and low-resolution areas are identified using sensitivity matrix calculations. During the acquisition phase, a multi-azimuth survey line array is deployed, and the source position is dynamically adjusted by monitoring the offset distribution heatmap in real time. When a spectral gap is detected, low-frequency source supplementary excitation is automatically triggered. For areas with missing acquired data, a low-rank tensor completion algorithm is used to recover the complete data volume. During the inversion process, long-offset data is prioritized to construct a macroscopic velocity model, and then short-offset reflected wave data is gradually introduced to refine the local structure. The model uncertainty analysis module automatically identifies low-confidence areas, generates supplementary acquisition coordinates, and drives field equipment to implement directional encryption. The newly added data is rapidly processed and reinjected into the inversion process, forming a continuously optimized closed-loop system.

The invention belongs to the field of uranium prospecting technical methods, and particularly relates to a roll-shaped uranium deposit prospecting method, which comprises the following steps of: (1) collecting basic geological information of a uranium metallogenic ground in a working area through geological survey; (2) establishing a working area deep space geologic structure by using a geophysical measurement technology method; (3) carrying out hydrogeological survey, and establishing a hydraulic connection between a surface water system and each stratum sand body; (4) establishing a uranium metallogenic basic geological condition analysis model, and predicting the uranium metallogenic potential of the working area; and (5) carrying out drilling verification, tracing and controlling the front line of the interlayer oxidation zone, and discovering and positioning the rolled uranium ore body. According to the method, the prospecting of the roll-shaped uranium ore deposit is decomposed into five links of ground survey, geophysical survey, hydrogeological survey, basic geological condition analysis and drilling verification, so that the technical problem that the existing prospecting exploration working technical method is relatively single is solved.

The invention belongs to the field of unmanned aerial vehicle fixed-point wiring of AB-pole power supply wires, and provides an unmanned aerial vehicle fixed-point wiring system for measuring AB-pole power supply wires through a geophysical prospecting electrical method, and the system comprises an unmanned aerial vehicle unit which employs a multi-rotor unmanned aerial vehicle, has a lifting capacity of more than 25 kg, and is provided with a wire fixing anchor point, a gripper and scissors at the lower part; the GPS module is used for determining the positions of a point A and a point B and determining the position of a damaged line when the unmanned aerial vehicle is used for observing the line before work; the wire control module is used for enabling the wire releasing speed to be controllable and cooperating with the unmanned aerial vehicle for wire arrangement and wire take-up; the unmanned aerial vehicle control module is used for controlling the unmanned aerial vehicle to rise, fall, advance and retreat and has the function of controlling grippers and scissors; wiring is conducted through the unmanned aerial vehicle, the working efficiency is improved, line processing is conducted through tongs and scissors on the unmanned aerial vehicle, the problem that erecting is conducted on trees on the two sides of a road or wires are wound on branches is solved, and meanwhile safety is further improved.

A method for carbon sequestration includes receiving geophysical survey data. The method also includes building a three-dimensional (3D) model based upon the geophysical survey data. The method also includes calibrating the 3D model to produce a calibrated 3D model. The method also includes extracting a soil layer from the calibrated 3D model to produce an extracted soil layer. The method also includes designing a soil-sampling campaign based upon the extracted soil layer. The soil-sampling campaign includes a plurality of cores. The method also includes determining characteristics of the cores. The method also includes propagating the characteristics through the calibrated 3D model to produce a 3D property model.

This invention discloses a method for detecting deep targets using multiple cross-electromagnetic component modes, belonging to the field of geophysical exploration. It includes several exploration vehicles equipped with multi-dimensionally adjustable sensors. The area to be explored is gridded, with the transmitting vehicle fixed to one side and multiple receiving vehicles automatically addressing to each detection node. At each node, the orientation of the detection sensors is adjusted to form six orthogonal transmission-reception combination modes: TxRz, TxRy, TyRx, TyRz, TzRx, and TzRy, acquiring multi-mode electromagnetic data. Based on the principle of common depth, horizontal distance is converted into vertical detection depth. The rate of change of magnetic field strength with polarization direction for each mode is calculated as a weight for data fusion, and then a least-squares inversion algorithm is used to image the underground target. This invention achieves multi-mode, multi-node, and automated detection, significantly improving the detection accuracy and imaging effect of deep targets such as coal mine fire boundaries and cavities.

This invention discloses a method for prospecting for metallic minerals in shallowly covered areas, belonging to the field of mineral exploration technology. The method includes: acquiring geological data of the shallowly covered area and analyzing the data to initially select potential mineral-bearing areas; delineating prospecting target areas for the initially delineated potential mineral-bearing areas using a combination of geophysical exploration methods; conducting shallow drilling and geochemical exploration to verify the prospecting target areas, further narrowing down the target areas, and carrying out a second round of shallow drilling and geochemical exploration; combining the results of the combined geophysical surveys and the results of the second round of shallow drilling and geochemical exploration, deeply interpreting each geophysical method, determining the exploration direction, and comprehensively analyzing the prospecting target areas and their mineralization potential in the shallowly covered area to further screen the prospecting target areas; and conducting deep verification of the screened prospecting target areas. This invention improves prospecting efficiency by employing the above method.

The application provides a geophysical three-dimensional modeling method and system based on multidimensional data, and relates to the technical field of geophysical modeling. The method comprises the following steps: acquiring geographic surveying and mapping data, extracting surveying and mapping data of a detection area, and forming target area surveying and mapping data; collecting geophysical survey data, combining the target area surveying and mapping data to analyze resistivity variation, and establishing a target area geophysical resistivity model; acquiring geological interpretation data, conducting geological structure analysis according to the target area geophysical resistivity model, and establishing a target area geophysical model. The method analyzes and models by reasonably analyzing multidimensional data, and improves the stability of modeling data accuracy and the reliability of data.

The present application belongs to the technical field of geophysical survey, and relates to a coal mine fault seismic exploration method, system and equipment based on active and passive source cooperation, aiming to solve the problems of limited application of the existing active source exploration method in the filling area and insufficient information of the passive source exploration method. The present application comprises: obtaining passive source data of a target area, passive source data of an edge area and active source data of the edge area; obtaining the corresponding relationship between the active source data and the passive source data based on the active source data and the passive source data of the edge area; predicting the active source data of the target area based on the passive source data of the target area and the corresponding relationship; and obtaining the exploration result of the target area by interpretation according to the passive source data of the target area and the active source data of the target area. The present application realizes high-precision and high-reliability detection of the coal mine area fault through the cooperative fusion of active and passive source data.

A method for evaluating geological hydrogen source rock in a region is provided. The method includes: collecting magnetic susceptibility data from a plurality of subsurface locations in the region; receiving geophysical survey data of the region, wherein the geophysical survey data comprises geophysical data collected from above ground; tying the magnetic susceptibility data of the plurality of subsurface locations to the geophysical survey data; generating a geologic map of igneous rock, metamorphic rock, or mafic mineral- or iron-rich sedimentary rock within the region based on the magnetic susceptibility data using a model; and determining, based on the geologic map, a target zone of the geological hydrogen source rock with a potential for hydrogen production or with the potential for hydrogen accumulation.

The application discloses a current detection device of a geophysical instrument and a multi-mode endurance prediction method, and relates to the technical field of geophysical instruments, in particular to a current detection device of a geophysical instrument and a multi-mode endurance prediction method. The current detection device comprises a geophysical survey device and a current detection device used for supplying power to the geophysical survey device. The current detection device comprises a precision voltage dividing resistor, a voltage stabilizing power supply and a power detection module. One end of the precision voltage dividing resistor is connected to a positive output end of the voltage stabilizing power supply, the other end is connected to an input end of the geophysical survey device, an output end of the geophysical survey device is connected to a negative output end of the voltage stabilizing power supply, an input end of the power detection module is connected to an input end of the precision voltage dividing resistor, and an output end of the power detection module is connected to a terminal. The current detection device of the geophysical instrument and the multi-mode endurance prediction method shorten endurance test time, shorten the equipment development cycle to a certain extent, and accelerate the product iteration speed.

The present application is suitable for the field of geophysical exploration technology, and provides a non-structured grid joint inversion method for gravity and magnetic based on equivalent surface source and wave number domain, comprising the following steps: using surface source equivalence to optimize the calculation of gravity and magnetic kernel function matrix; the wave number domain method calculates the kernel function matrix of gravity and magnetic by combining the characteristics of the equivalent surface of non-structured tetrahedral subdivision. In practical application, the present application can more quickly calculate the gravity and magnetic kernel function matrix under non-structured tetrahedral grid subdivision, thereby improving the calculation efficiency of the joint inversion of gravity and magnetic under non-structured tetrahedral grid subdivision, making the joint inversion of gravity and magnetic under non-structured tetrahedral grid subdivision with higher inversion resolution and field source description capability have better development in the fields of large-area mineral resource exploration and fine structure exploration. Through simulation experiment verification, the efficiency improvement of kernel function calculation in the joint inversion of gravity and magnetic under non-structured tetrahedral grid subdivision can reach more than 90%.