281 results about "Mineral exploration" patented technology

The invention relates to a single-action double-pipe coring overburden drill tool for an air down-the-hole hammer. The single-action double-pipe coring overburden drill tool comprises a central coring drill tool and an overburden drill tool. The central coring drill tool is a single-action double-pipe coring drill tool and comprises a single-action vibration reduction mechanism, an inner pipe adjusting mechanism and a coring mechanism with a bayonet device; the single-action vibration reduction mechanism comprises an impact connector, a disc spring, a bearing block, a connecting shaft, a thrust ball bearing and a radial ball bearing; the inner pipe adjusting mechanism comprises a connecting shaft, a core pipe connector, an inner pipe and a nut; the coring mechanism with the bayonet device comprises an outer pipe, an inner pipe, a connecting shaft, a core pipe connector, a coring drill bit, a rolling needle, a pawl spring seat and a pawl spring; the overburden drill tool comprises a casing, a casing connector, a casing shoe, a clamp ring and a casing drill bit. The single-action double-pipe coring overburden drill tool for the air down-the-hole hammer is applicable to relevant fields such as geological mineral exploration and engineering geological survey for complex formation with loose sand, cobbles, gravel, fracture, breakage and the like.

Mineral exploration needs a reliable method to distinguish between uneconomic mineral deposits and economic mineralization. A method and system includes a geophysical technique for subsurface material characterization, mineral exploration and mineral discrimination. The technique introduced in this invention detects induced polarization effects in electromagnetic data and uses remote geophysical observations to determine the parameters of an effective conductivity relaxation model using a composite analytical multi-phase model of the rock formations. The conductivity relaxation model and analytical model can be used to determine parameters related by analytical expressions to the physical characteristics of the microstructure of the rocks and minerals. These parameters are ultimately used for the discrimination of different components in underground formations, and in this way provide an ability to distinguish between uneconomic mineral deposits and zones of economic mineralization using geophysical remote sensing technology.

The invention discloses an ore crushing and screening integrated equipment for mining exploitation, which includes a crushing box, a lifting sleeve, a connecting rod, a crushing wheel, a screening box, a base and a collection box, and a material guide is fixedly arranged on the inner wall of the upper inner cavity of the crushing box The lower part of the crushing box is sleeved on the upper outer ring of the lifting sleeve. The lower surfaces of both ends of the material guide seat are connected to the connecting rod through the hinge shaft. The bottom end of the connecting rod is provided with a crushing device. The inner cavity of the screening box A rotating rod is installed in the middle through the bearing connection mode, and the outer ring of the rotating rod is equipped with a spiral blade. The first screen, the second screen and the third screen are arranged on the inner cavity plate of the screening box from left to right. The invention is simple in structure and reasonable in design, can effectively crush ore materials, and is suitable for different ore materials, and can screen the crushed ore materials at the same time, greatly reducing the labor intensity of workers and improving the efficiency of ore processing , suitable for promotional use.

Disclosed is a method and apparatus for measuring the electromagnetic wave resistivity of earth formations. The disclosed method and apparatus use an electric field sensor, a magnetic field sensor in conjunction with a data collecting system to obtain data samples from strata, determine certain parameters associated with the data samples, such as a depth coefficient and a surface-layer depth coefficient, establish an observational reference frame based upon an equation defined by the stratum depth (H) and propagation frequency (F) and an equation defined by the electromagnetic wave resistivity (ρ) and stratum depth (H), and utilize the reference frame to record results from a data collecting, controlling, storing and processing system configured for continuously measuring the electromagnetic wave resistivity of earth formations. Compared with the conventional method where the multi-variable theory and formula is used for determining the stratum depth and/or thickness, the presently disclosed method uses actual data to determine the relationship between the stratum depth (H) and propagation frequency (F), which makes the resistivity of earth formations the only variable to be measured and thus significantly improves the accuracy of depth measurements. In addition, the disclosed apparatus provides almost real-time data processing of the collected data samples to produce a changing curve of the measured electromagnetic wave resistivity corresponding to any changes in the stratum depth. The disclosed method and apparatus can be directly applied in the field of mineral exploration, and it will reduce the number of well drills and improve the efficiency of mineral exploration.

The invention discloses a mineral cleaning device for mineral exploration. The mineral cleaning device comprises a bottom plate, a transmission cavity, a cleaning frame and a cleaning tank, wherein the cleaning tank is arranged on the upper end of the bottom plate; the cleaning frame is arranged in the cleaning tank; second slide chutes are symmetrically arranged on two ends of the cleaning frame;a second pushing rod is slidably connected into each second slide chute; the second pushing rod on the left end penetrates through the side wall of the cleaning tank and is hinged to a connection rod; the left end of the connection rod is rotatably connected to an eccentric position of a rotary disc; the transmission cavity is arranged on the inner side of the bottom plate; a motor is arranged onthe right side of the transmission cavity; and an output end of the motor is fixedly connected with a rotary shaft. The mineral cleaning device is novel in design and simple in operation; the cleaning frame 10 can reciprocate horizontally and swing vertically intermittently at the same time, so that fluidity of water in the cleaning frame is improved; dust and soil on minerals can be rapidly carried away, so that the cleaning efficiency of the minerals is improved, and the cleaning effect of the minerals is enhanced.

The invention relates to a mineral exploration sampling device convenient for fixing. The device comprises a base, a top plate, a controller, a hydraulic cylinder, a first motor, a drill pipe, a sampling mechanism, a number of brackets and a number of legs. A fixing mechanism is arranged on one side, which is away from the drill pipe, of the legs. The sampling mechanism comprises a sampling box, adrill bit and a sampling component. The sampling component comprises a driving unit, a driving plate and two sampling units. The fixing mechanism comprises an adjusting component, an adjusting plate,a bottom plate, a fixing component and four rollers. According to the mineral exploration sampling device convenient for fixing, the device is fixed on the ground by the fixing mechanism to prevent the device from slipping and shifting a sampling position when the drill pipe rotates; moreover, the sampling mechanism allows a certain depth of soil to enter the sampling box through a sampling port,and the soil in other positions is prevented from entering the sampling box; sampling at a specific position is realized, which is beneficial to accurate detection of mineral products; and the practicability of the device is improved.

The invention discloses a method for measuring the total porosity of shale, which is applied to laboratories for oil exploration, geological exploration and mineral exploration to perform a shale measurement. The method is characterized by comprising the following steps of: measuring the apparent volume of a shale sample; crushing the same sample used aforementioned to 100-200 meshes; performing drying treatment for 24-48 hours at 60-80 DEG C; performing cyclic crushing on the shale sample into fine particles which are 100-1000 nm in diameter by an auxiliary liquid, and measuring the volume of the consumed auxiliary liquid; and measuring the volume of the mixed liquid of the auxiliary liquid and the shale sample after the cyclic crushing, and calculating to obtain the total porosity of the shale sample. The method has the effects of being capable of measuring the total porosity of shale and high in measurement accuracy.

The invention provides a method and a device for extracting mineral composition remote sensing information based on a characteristic index. The method comprises the following steps of: A, preprocessing a remote sensing image; B, calculating the characteristic index of a pixel of the preprocessed remote sensing image; C, building a regression equation; D, calculating values of a, b, c, d and e in the regression equation according to an actual sample; and E, calculating the mineral composition content in the pixel according to the regression equation obtained in the step C. The method and the device can be applied to mineral exploration; and effects of saving time, saving labors and saving resources are achieved during mineral exploration.

The invention belongs to the technical field of uranium ore, and specifically relates to a method for testing the formation age of crystalline uranium ore; The age of uranium deposits and the role of metallogenic evolution analysis, decomposing the key elements and main ore-controlling factors of each metallogenic period from complex geological phenomena, providing ideas for uranium deposit exploration, and guiding specific ore-prospecting work to test crystal quality The method for the formation age of uranium ore; including the following steps: Step 1, field investigation and collection of uranium ore samples; Step 2, rock ore identification and electronic probe analysis on the ore samples; Step 3, using LA-ICP-MS Micro-zone dating of crystalline uranium ore; step 4, data collation, parameter calculation and mapping, and finally the formation age of uranium ore is obtained.

The invention discloses a method of delineating a mineralization center based on a short-wave infrared spectrum. According to the method, in the interpreting process of the short-wave infrared spectrum, the influences of different deposit types, different landscapes and different surrounding rocks and source rocks on spectrum parameters are considered, qualitative description of the content of relevant altered minerals in a magmatic-hydrothermal metallogenic system is improved to quantitative interpretation, and the difficulties that accurate recognition is difficult and efficiency is low because rocks are not uniform and alteration is not representative in conventional petrographic identification are overcome. By deeply analyzing the influences of different influence factors on infrared spectrum information, the accuracy and mineral visibility at a delineated hydrothermal center can be greatly improved, the exploration risk is lowered, sample preparation is not needed, test time is short, energy conservation and environment protection are realized, the method is convenient and rapid to use, and the mineral exploration cycle is effectively shortened.

The invention discloses a non-negative matrix unmixing method of air-spectrum combined multi-constraint optimization, which comprises the following steps: 1) estimating the number of hyperspectral terminal elements; 2) constructing a minimum distance constraint term of an end-member spectrum; 3) constructing an abundance mixed norm sparsity constraint term; 4) constructing a sparsity constraint term of the gradient domain group of the abundance graph; 5) establishing a non-negative matrix unmixing model of space-spectrum combined multi-constraint optimization; 6) alternate direction iterativesolution; 7) outputting the terminal element and the abundance diagram obtained by the demultiplex. As the distance between the spectrum of the end element of the hyperspectral image and the geometrical cent of mass is small, the abundance sparsity and the slice smoothness are fully utilized, the searching space for solving the end element and the abundance is limited by multiple constraints, thelocal minimum is avoided, and the optimal solution is obtained by iterative solution; compared with the traditional non-negative matrix unmixing model method, the invention improves the precision of unmixing, enhances the robustness of the method to noise, and can be widely applied to the hyperspectral unsupervised unmixing in the fields of land resources, mineral exploration and precision agriculture.

The invention discloses a sampling device for bauxite mineral exploration. A supporting beam is horizontally arranged, a supporting rod is fixed to two ends of the supporting beam respectively, the lower ends of the supporting rods are supported and arranged on bases by adopting hydraulic jacks, a supporting base is arranged in the middle position of the supporting beam, a bauxite sampling drill bit assembly is fixedly arranged on the lower surface of the supporting base, a sampling pipeline is arranged on the bauxite sampling drill bit assembly in a communicated mode, and a negative pressure sampling pump is arranged on the sample pipeline in a communicated mode and is fixedly arranged at the end of the supporting beam. The sampling assembly is arranged on the cross beam through the hydraulic jacks, the negative pressure sampling pump is utilized to sample mineral resources, a sampling effect is improved, the hydraulic jacks can adjust the height of the cross beam very conveniently, energy accumulation of an energy accumulation spring steel sheet is achieved by utilizing a driving cam cylinder, resonant impact is performed by combining with a high-frequency impactor, bauxite sampling can be achieved rapidly, and the sampling efficiency is improved.

The invention provides a portable single-cabinet ball highly-integrated seabed electromagnetic device. The electromagnetic device integrated with the single cabinet ball and is provided with an externally-arranged magnetic probe, so magnetic disturbance on elements in a cabinet is effectively reduced and measurement data is more precise. The electromagnetic device is integrated with electric field measurement, magnetic field measurement and recording functions, so the number of devices is reduced. Electrode arms are telescopic, detachable and rotatable, and can be erected, unfolded and laid flat after being thrown into sea. The electromagnetic device can autonomously sink, float and is easily thrown and positioned. It is convenient for people to operate, maintenance and use the electromagnetic device to perform construction work without the assistance of large mechanical devices like cranes. The electromagnetic device has pressure-resisting, corrosion-resisting and waterproof functions, and is capable of easily sinking or floating and recyclable and stably working under the sea. Being integrated with common uncoupling mechanisms, the electromagnetic device is highly universal. Cost for scientific research is remarkably reduced. The electromagnetic device is highly precise and automatic and suitable for field of offshore oil, mineral exploration and research for marine geological structures.

The invention provides a spectrum camera based on all-pass single-template complementary sampling and an imaging method for solving a technical problem that a conventional spectral imaging system is complex in structure and poor in spectral image reconstruction quality. The spectrum camera comprises a lens group, an encoding module, an observation module, and an image reconstruction processing module. The lens group is composed of a group of lenses. The encoding module uses an area array structure formed by random combination of multiple transmission array elements and reflection array elements, and forms an acute angle with the transmission direction of the spectral image, and is used for randomly encoding the transmission information and the reflection information of the spectral image. The observation module comprises a transmission observation module and a reflection observation module and is used for performing transmission observation and reflection observation on the encoded spectral image. The image reconstruction processing module simultaneously fuses two observation results to reconstruct the spectral image. The spectrum camera is simple in system structure, high in luminous flux, and short in exposure time, and can be used in the fields of mineral exploration, natural disaster monitoring, and military reconnaissance.

The invention provides an estimation system of reserve of solid mineral resources based on a two-tier database. The system comprises an original data management module, an application data management and processing module and a reserve estimation result outputting module. The original data management module comprises a geological and mineral exploration original database, a collecting module of original data of a mine exploration phase and a collecting module of data newly acquired in a mining phase. The application data management and processing module comprises an original data extracting module, a reserve estimation application database, a base map generating module, a profile interpretation module, a block combination module and a result storage module. The original database and the application database are separated to obtain the two-tier database; safety and stability of original data of geological and mineral exploration is guaranteed, local data is operated more quickly and more efficiently during reserve estimation, and application modules developed allow solid mineral reserve estimation and exploratory line profile map generating to be synchronized and integrated.

A method is disclosed for identifying a sediment accumulation from an image of a part of the earth's surface. The method includes identifying a topographic discontinuity from the image. A river which crosses the discontinuity is identified from the image. From the image, paleocourses of the river are identified which diverge from a point where the river crosses the discontinuity. The paleocourses are disposed on a topographically low side of the discontinuity. A smooth surface which emanates from the point is identified. The smooth surface is also disposed on the topographically low side of the point.

The invention relates to the field of oil and gas field exploration and development and mineral evaluation and prediction, and particularly relates to a multi-period fracture quantitative prediction method based on the fault activity. The paleo fall of the fault is solved based on seismic interpretation, different periods of fault activity plane models are established, and different periods of fracture density development models are established by calculating the fault activity information dimension; and a fracture openness evaluation model is established through current ground stress analysis so as to predict different periods of current fracture development indexes. The method is low in prediction cost and high in operability so that labor and financial cost can be greatly reduced, and the prediction result has certain reference significance for multiple aspects including preferential selection of important areas of oil and gas and mineral exploration and performing of later fracturing stimulation measures.

The invention discloses a method for picking up a boundary with abnormal gravity by using a normalized derivative model method which utilizes gravimetric and magnetic data to interpret breakage and other geotectonic boundaries in petroleum and solid mineral exploration. The method comprises steps of: eliminating weak information generated by shallow and near-surface heterogeneous bodies in bouguer gravity anomaly of gravity data by using a low-pass filter; respectively getting a derivative in X axis direction and a derivative in Y axis direction to obtain a horizontal gradient model; determining a coherent signal to obtain curvature properties, the normalized derivative model and a contour map; and determining the boundary with abnormal gravity to be picked up according to a ligature of maximum values of the anomaly. According to the anomaly information obtained by the invention, not only the width of large-scale anomaly is narrowed and thinned, but also the weak anomaly in small scale can be effectively highlighted.

The invention belongs to the field of mineral exploration, and aims at solving the problems that the physical heterogeneity of sand bodies in sandstone-type uranium ore stratums in a research area ishigh, and conventional hole-permeability fitting formula accounts for low permeability. The method for calculating the permeability of the sandstone-type uranium ore sand body based on the flow unit classification is provided, and the stratum permeability explanation precision is improved. The method comprises the following steps: 1, calculating a flow unit index of a sample point according to actually measured physical property data of a core of a coring well section; Step 2, realizing reservoir classification by applying a probability graph method; Step 3, establishing a quantitative relation between the flow unit index and the logging response based on five logging curve data of quantitative gamma, natural gamma, density, apparent resistivity and sonic time difference; Step 4, on the basis of flow unit index classification, respectively establishing holes according to different types of reservoirs; a seepage relational expression; Step 5, performing reservoir classification; 6, obtaining a stratum interpretation permeability value; and step 7, drawing a permeability spatial distribution diagram, and establishing an ore searching model.

The invention provides a multifunctional tractor which comprises a frame with power equipment and a platform arranged above the frame. The rear lower central portion of the platform is hinged to a hydraulic cylinder. The middle lower part of the frame is fixedly connected with a rear axle box. The rear axle box is provided inside with a front output shaft and a rear output shaft for power transmission. The frame can be coupled with the existing products such as two-furrow plough, rotary cultivator, hole digger, hoisting machine and well detector. Compared with the prior art, the multifunctional tractor has the advantages that: (1) the tractor has multiple functions and wide application range, is suitable for various operations in farmland as well as pit digging and planting in farmland, fruit garden and mountain forest, construction hoisting, well construction and mineral exploration, agricultural byproduct processing and short distance transportation, and integrates the function of small tractor for agricultural use and helps increase the economic benefit for farmers; (2) the multifunctional tractor has reasonable structure, film assembly and connection, safe and reliable transmission and easy operation; and is easy to be operated by famers; and (3) the multifunctional tractor can complete various operations without using additionally power equipment and realizes low cost and high work efficiency.

The invention provides a jack-tightening and sealing mechanism of a hydraulic jet impacter, belonging to the fields of geological mineral exploration engineering and petroleum drilling. The device comprises an upper connecter, a disc spring frame, a disc spring, a seal ring, an adjusting washer and a fluidic element. The maximum working load of the disc spring can be obtained through calculation and then software design and simulation are adopted to obtain the specification of the disc spring which meets the requirement of the static strength and the fatigue strength simultaneously, thus the phenomenon that the cylinder body deforms and the piston is locked and can not move flexibly caused by over-tight axial assembly, and the phenomenon that high pressure mud leaks and the end faces of each part are eroded caused by over-loose axial assembly and over-low set pretightening force, in the test and application process of the existing hydraulic jet impacter is solved. In addition, a vertical overflowing section is arranged above the inlet structure of the fluidic element; and a radial seal ring is added between the disc spring frame and the fluidic element, thus the fluid transition structure between the fluidic element and the disc spring frame can be optimized and the service life of the fluidic element can be increased.

The invention discloses a high-spectrum image segmentation method based on pixel space information, mainly solving the problem that similar physiognomies can not be favorably segmented by the prior method. The high-spectrum image segmentation method comprises the following steps: solving and normalizing a pixel characteristics matrix and a pixel space Euclidean distance matrix of high-spectrum data; weighting the pixel characteristics matrix and the pixel space Euclidean distance matrix, adding the two weighted matrixes to form a joint dissimilarity matrix and adjusting weighted parameters toacquire a plurality of groups of joint dissimilarity matrixes; using an isometric mapping algorithm to reduce the dimension of each group of joint dissimilarity matrix and acquiring a plurality of groups of mapping results; counting and analyzing each group of mapping result, finishing the primary segmentation of a high-spectrum image; and carrying out category correction to primarily segmented boundary points to acquire a final image segmentation result. The method can effectively find the nuance of different physiognomies in the high-spectrum image and can be applied to martial object recognition, mineral exploration and environmental condition analysis.

The invention discloses a waste sewage treatment method in the mineral exploration process. The waste sewage treatment method comprises the following steps: I, studying and utilizing the vantage ground under a well, selecting an appropriate large-capacity worked out section as a natural filtering tank and a settling pond, and treating mine wastewater so as to circulate the mine wastewater under the well; II, according to mine water quality characteristic analysis, performing simple purification and utilization on mine water if pollutants such as heavy metals which can do great harm and are hard to remove do not exceed standards, removing suspended solids and bacteria in the mine water, and neutralizing acid mine water so as to meet mine operation water use requirements; and III, performing wastewater diversion from clean water. By adopting the waste sewage treatment method in the mineral exploration process, the large-capacity worked out section has settling and filtration functions, meanwhile the quality of a water body can be improved through a self-cleaning function to a certain extent, and high-temperature wastewater which is discharged in a short term can be cooled.