290 results about "Mine site" patented technology

The invention discloses a repair medicament for compound heavy metal polluted soil. The repair medicament comprises the following components: phosphate compound, soluble ferric salt, magnesium oxide, inorganic clay, an organic chelating agent and silicon dioxide, wherein the phosphate compound adopts one or the combination of phosphate, hydrophosphate or dihydric phosphate. The repair medicament is applicable to compound heavy metal polluted farmland soil, compound heavy metal polluted industrial site soil and compound heavy metal polluted mine site soil. Stirring and mixing of the repair medicament and the heavy metal polluted soil belong to in-site stirring and mixing or off-site stirring and mixing. The repair medicament is short in repair cycle and low in cost, has wide spectrum, and is simple in technical operation.

The present invention discloses a road surface dust suppressant and a preparation method thereof, wherein the road surface dust suppressant comprises 1-3% of a water-soluble macromolecule polymer, 0.5-1.5% of sodium polyacrylate, 0.5-1% of urea, 0.2-0.5% of an anionic surfactant, and the balance of water. According to the present invention, the road surface dust suppressant can be applied in road dust suppression, earth work dust emission treatment in mine exploitation, mine field road transportation and municipal construction, and other fields so as to effectively solve the problem of dust pollution, ensure transportation safety and health safety of motorcyclists and staffs around, reduce the maintenance cost of the transportation equipment, increase the service life of the equipment, and especially solve the problem of rolling dust emission of the heavy duty transportation tool.

The invention provides an all-solid-waste cementing material synergistically prepared from steel slag and a multi-objective optimization method, and relates to the technical field of mine field filling; large-scale and high-added-value resource utilization of steel slag and industrial byproduct gypsum low-quality solid waste in filling mining can be realized, so that the tailing filling mining cost is reduced, and the economic benefit and the environmental protection benefit of filling mining are improved. The method comprises the steps: preparing the all-solid-waste cementing material from the steel slag, industrial by-product gypsum and mineral slag, filling by taking mine superfine full tailings as aggregate, and establishing a multi-objective optimization model by taking the strength cost performance of a filling body, the cost of the filling material and the utilization rate of the mineral slag as optimization objectives and taking the strength and the volume expansion rate of thefilling body as constraint conditions; and according to the multi-objective optimization model, obtaining the optimal proportion of the components in the all-solid-waste cementing material. The method provided by the invention is suitable for a mine field filling process.

The invention relates to an underground locating and monitoring system which comprises a client, a server, a data communication box, a radiofrequency card and a plurality of card readers arranged at different positions underground, wherein the card readers read information on the radiofrequency card in a readable range, generate corresponding position information through the information on the radiofrequency card and send the information on the radiofrequency card and the corresponding position information to the data communication box, the data communication box retransmits and stores the information on the radiofrequency card and the corresponding position information to the server, and the client remotely visits the information on the radiofrequency card and the corresponding position information stored on the server. By implementing the invention, online monitor, control and management of an underground mine field can be realized, and the conditions and underground concrete positions of miner lamp users can be automatically counted and reported so as to realize automatic attendance check of downhole personnel and location of underground operators.

The invention relates to a dimension and dip angle adjustable type coal mine stope similar model test system and method. The system comprises a model bearing frame, a pressure loading device, a model frame rotating device, a centralized control device and a monitoring device, wherein the model bearing frame is used for laying a stope similar model; the centralized control device is used for sending a pressure application control instruction to the pressure loading device according to a pressure value set by the test and sending a rotation control instruction to the model frame rotating device according to a dip angle value set by the test; the pressure loading device is used for applying pressure to the model bearing frame according to the pressure application control instruction; the model frame rotating device is used for enabling the model bearing frame to rotate by the set dip angle according to the rotation control instruction; the monitoring device is used for monitoring the state of the stope similar model in an excavation process. With the adoption of the system provided by the invention, the pressure characteristics of a coal working face of different dip angles, different buried depths and different coal seam thicknesses of a coal mine site can be simulated in a laboratory.

The invention discloses a method for fixing pollutants in pollution source soil in abandoned mine fields and application thereof. The fixing method comprises the steps of loosening the soil, digging holes, adding modifier and fertilizer to balance the soil in the holes, planting energy trees in the soil in the holes, sowing pioneer grass seeds on the topsoil in the holes, and the like. The invention uses chemical modifier and fertilizer to modify the planting condition of the polluted soil in mine areas, then interplants pioneer grass, fast-growing energy trees and other plants to effectively fixe substances such as heavy metal pollutants in soil, avoid the pollutants from being discharged to downstream areas in the form of acidic mine waste water to pollute the environment and damaging the ecology.

The invention discloses a method for strengthening regional gas extraction through hydro-thermal coupling fracturing. The method comprises steps as follows: firstly, a main fracturing hole, branch fracturing holes and lead holes are sequentially formed in a coal seam roadway through construction, the main fracturing hole is formed in the central position of an equilateral triangle, the opening positions of the branch fracturing holes are distributed at three vertexes of the equilateral triangle separately, the borehole bottom locations of the branch fracturing holes are converged in a center line of the equilateral triangle, the lead holes are located in a circle with the main fracturing hole serving as a center of the circle, and the radius of the circle is 5-15 m; fracturing equipment comprises water injection equipment and a powder injection device, and the water injection comprises an intelligent water tank and a fracturing pump. Quicklime powder in the powder injection device is injected into the main fracturing hole and the branch fracturing holes through underground air pressure; the water injection equipment performs hydraulic fracturing on the main fracturing hole, the quicklime powder is carried by high-pressure water to enter cracks, meanwhile, the quicklime powder and water have a thermal reaction to generate a large amount of heat, and hydro-thermal coupling fracturing is realized; with the implementation of the method for strengthening the regional gas extraction through the hydro-thermal coupling fracturing, the regions influenced by fracturing are increased, the concentration of extracted gas is increased, the effect is remarkable, and demands of work such as regional gas treatment in a coal mine site and the like are met.

The invention provides a method for maintaining flow conductivity of seams near the wellbore area. The method comprises the steps of firstly, preparing a temporary plugging steering working solution, wherein the temporary plugging steering working solution comprises degradable temporary plugging agents, an equidensity proppant and a low-viscosity carrying liquid; carrying out staged fracturing, wherein the pump injection sequence is a prepad fluid, a sand-carrying fluid and the temporary plugging steering working solution; and after complete fracturing, waiting till the temporary plugging steering working solution is degraded, carrying out fluid drainage, and ensuring that the proppant remains at the seams and forms a seepage channel. According to the method, the degradable temporary plugging agents are formed through mixing multi-scale combined degradable temporary plugging agents according to a certain proportion, the large-particle degradable temporary plugging agents are blocked at the end openings of the seams, and the clearances among the large-particle degradable temporary plugging agents are filled with the small-particle degradable temporary plugging agents, so that the plugging effect is effectively and quickly improved, after fracturing, the degradable temporary plugging agents and the proppant exist in the hydraulic fracture seams, after the degradable temporary plugging agents are degraded, the proppant maintains the flow conductivity of a near mineshaft, the risk that the seams near the wellbore area are closed and do not have the flow conductivity is reduced, and seepage channels of a gas reservoir and a mineshaft are maintained.

The invention provides an on-site dynamic detection method for a surface mine. The method comprises the following steps of step 100, selecting three-dimensional laser scanner devices according to the requirement, simultaneously dividing the scanning area of each three-dimensional laser scanner device, and then arranging the three-dimensional laser scanner devices in each scanning area; step 200, establishing a common feature point cloud between adjacent scanning areas, and then sequentially starting the three-dimensional laser scanner devices of each scanning area to scan the scene and obtain regional point cloud data; step 300: subjecting the regional point cloud data to point cloud stitching, point cloud pruning and coordinate system conversion to obtain the whole point cloud data; and step 400, using a tool to deal with the whole point cloud data to obtain the actual data of the current surface mine and the 3D visualization image. The method is based on the three-dimensional laser scanning technique, can recover the space shape of the surface mine at the selective examination time, and enable the three-dimensional management mode to gradually replace the two-dimensional mode.

The invention discloses a car wash platform for a mine, and relate to the field of mining engineering. The car wash platform for a mine comprises a base, the base is provided with a cleaning box, oneside of the cleaning box is provided with an opening used for allowing a vehicle to enter; the base is internally provided with a cavity, drainage holes communicating with the internal portion of thecavity are uniformly distributed at the upper end face of the base, a filter net is horizontally arranged at the inner wall of the upper end of the cavity, a water pump is arranged at the outer wall of the lower end of the base, the water inlet end of the water pump is provided with a water inlet pipe communicating with the lower portion of the cavity and a drainage pipe is arranged at the position of a water outlet end. By cooperation of the cavity and the filter net, the filtering and recovery of the waste water can be achieved, and the filtered water can be continuously used, thereby improving the utilization of water resources and avoiding waste of water resources.

Staged crushing combined with water addition and mixing is practiced at the mine site to prepare an oil sand slurry ready for hydrotransport. More particularly, as-mined oil sand is crushed to conveyable size (e.g. —24″) using a mobile crusher. The pre-crushed ore product is conveyed to a dry ore surge bin. Ore is withdrawn from the bin and elevated to the upper end of a slurry preparation tower having downwardly aligned process components to enable gravity feed. The ore is further crushed in stages to pumpable size (e.g. —4″) by a stack of crushers and water is added during comminution. The ore and water are mixed in a mixing box and delivered to a pump box. The surge bin and tower are relocatable. Screening and oversize reject treatment have been eliminated to achieve compactness and enable relocatability.

The invention discloses a device for testing performance of a grouting and water plugging material for a mine and an application method of the device. The device comprises a plain jolter, a testing barrel, grouting pumps, a water pump and a pressurization system, the testing barrel is fixedly mounted on the plain jolter, a fixed porous plate is mounted at the bottom in the testing barrel, a movable porous plate is mounted at the top in the testing barrel, the area between the fixed porous plate and the movable porous plate forms a material filling area, the movable porous plate is connected with the pressurization system, multiple grouting pipes and multiple pressure testing pipes are mounted on and communicated with the material filling area from top to bottom, each grouting pipe is connected with the corresponding grouting pump, a water pressure meter is mounted on each pressure testing pipe, the water pump is communicated with the bottom of the testing barrel through a water injection pipe, a water outlet pipe is mounted at the top of the testing barrel, and the grouting pipes, the pressure testing pipes, the water injection pipe and the water outlet pipe are each provided with a valve. The device can simulate the water inrush conditions under different permeability conditions, true water plugging performance of the water plugging material is obtained, and furthermore, reliable reference is provided for a coal mine site to select water plugging materials and construction conditions.

The invention relates to a mine environment monitoring cloud control system, which comprises a control platform, a remote monitoring computer, running equipment, monitoring equipment and a plurality of duty mobile phones, wherein the control platform mainly consists of a PLC (programmable logic controller) wireless communication module and a PLC, the PLC wireless communication module and the PLC are connected by a RS485 bus, the PLC is connected with the running equipment and the monitoring equipment, and the remote monitoring computer and the duty mobile phones are connected with the PLC of the control platform through a GPRS (global packet radio service) wireless network. The mine environment monitoring cloud control system has the advantages that the collection, transmission, storage and analysis functions of data are realized according to the mine site environment and the equipment current conditions, the collection of factor signals of the environment and the equipment is integrated, and the collection, transmission, storage and analysis functions of data are realized through function modules, so a user can clearly know the site actual conditions, the early warning is performed, the security protection is well performed, and the data is transmitted through the GPRS wireless network in real time; the intelligence degree is high, the information interaction effect is realized, and multiple functions are realized.

The invention discloses a green mine location selection method based on remote sensing data and geographic information system. The method comprises the following steps: obtaining remote sensing imagedata of an area to be studied and performing pretreatment; extracting factor information of the preprocessed remote sensing image data; quantitatively processing the extracted factor information; calculating the weight coefficients of quantified factor information and constructing the linear model of mine site selection. Wherein the factor information is selected from the group consisting of faultstructures, mining area locations, vegetation coverage, boreholes and grooves, villages, rivers, roads, gradients and height differences. The invention provides a green mine site selection method based on remote sensing data and geographic information system, which enables remote sensing data to play an important role in green mine construction by utilizing remote sensing information extraction technology, combining powerful spatial analysis functions of GIS such as spatial superposition, buffer analysis and the like, and providing assistance for green mine site selection.

The invention discloses a sulphide ore calefactive oxidation experimental device which is composed of a calorstat, a temperature probe, a sulfur dioxide transmitter and a paperless recording instrument. A hole is perforated perpendicularly in a shell of a top cover of the calorstat and penetrates through a thermal insulation layer to enter a working chamber inside a calorstat body. The temperature probe is arranged through the hole, is connected with the paperless recording instrument, and is used for continuously monitoring a temperature of the working chamber of the calorstat and temperatures on the surface and inside a sulphide ore pile. A gas vent is formed in the top of the calorstat, and a metal pipeline is fixed at the gas vent of the calorstat. The sulfur dioxide transmitter is arranged at an outlet of the metal pipeline and is connected with the paperless recording instrument through a two-core shielded wire, and a concentration of sulfur dioxide released due to calefactive oxidation of sulphide ore is continuously monitored. By adoption of the sulphide ore calefactive oxidation experimental device, the whole process of oxidation, self-heating and spontaneous combustion of the sulphide ore pile can be researched, a reactive state can be analyzed according to temperature changes and the concentration of the generated sulfur dioxide, and meanwhile, influences of multiple factors and multiple levels can be considered to simulate influences of various environment factors on a mine site.

The invention discloses a coal flow control device based on a CAN bus. The coal flow control device based on the CAN bus comprises an MCU module (1). A CAN module (3), a display screen (5) and buttons (6) are arranged on the periphery of the MCU module (1), wherein the CAN module (3), the display screen (5) and the buttons (6) are all connected with the MCU module (1). A power source (2) supplying power to the control device is further arranged on the periphery of the MCU module (1). The input of the MCU module (1) is connected with an on-off status sensor (7) and a start-stop sensor (8) of the belt conveyer (10). The output of the MCU module (1) is connected with a protective device host (9) driving the belt conveyer (10). For a coal mine site with multiple belt conveyers, each belt conveyer is provided with the flow control device, the flow control devices conduct communication through the CAN bus, each flow control device conducts centralized control over the corresponding belt conveyer based on signals fed back by the on-off status sensor and the start-stop sensor of the flow control device according to the needs, start and stop are intelligently conducted according to the conditions of coal on each belt conveyer, idling of each belt conveyer is avoided, and electricity is greatly saved.

This invention is directed to a means for transporting a mine roof support set including a plurality of nested containers. Each container in the set has a progressively smaller cross-sectional dimension, or a tapered, frusto-conical shape, to allow the containers to be nested one within the other. The plurality of nested containers allows more efficient transportation of the mine roof support set to a mine site. The containers can be separated at the mine site and filled with a load-bearing material. The containers filled with the load-bearing material are then placed with their longitudinal axis between a mine roof and a mine floor.

This invention is directed to a mine roof support set including a plurality of nested containers. Each container in the set has a progressively smaller cross-sectional dimension to allow the containers to be nested one within the other. The plurality of containers can be nested during transportation of the mine roof support set to a mine site. The containers can be separated at the mine site and filled with a load-bearing material. The containers filled with the load-bearing material are placed with their longitudinal axis between a mine roof and a mine floor.

A magnesium suppressant / flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant / flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.

A mining vehicle is provided, which is capable of appropriately recognizing a condition of a traveling road in front of the vehicle, preventing an obstacle on a roadside from being erroneously detected by a distance detector, and controlling the speed of the vehicle in a stable manner even when the vehicle is approaching a curved portion of the road from a linear portion of the road.The mining vehicle that travels on a transport road of a mining site includes: a minimum roadside distance determining unit; a traveling status calculator configured to calculate traveling status of the vehicle and a turning radius of the vehicle; a roadside distance calculator configured to calculate a roadside distance between the vehicle and a roadside of the transport road; a roadside distance selector configured to select and output a minimum roadside distance if the vehicle is in a rectilinearly traveling state and select and output the roadside distance calculated with the roadside distance calculator if the vehicle is in a turning state; a detected distance limiter configured to disable a signal representing the distance, detected with the distance detector, between the vehicle and the object and the relative speed if the distance between the vehicle and the object is larger than a distance represented by a signal selected and output from the roadside distance selector; and a vehicle speed controller configured to control the speed of the vehicle on the basis of a signal output from the detected distance limiter.

The invention provides a method for evaluating multi-level development potential of whole-loading oil field in high water-cut period based on improved QFD. The core tool of the method is an evaluationhouse, which consists of nine parts, namely a development effect evaluation index matrix, a technical measure matrix, a development effect index and technical measure correlation matrix, a technicalmeasure first-level, second-level and third-level application potential matrix, and a first-level, second-level and third-level development potential matrix. The multi-level development potential of whole-loading oil field in high water-cut period after different technical measures are carried out can be analyzed. Compared with the numerical simulation, the method is simple and convenient: after the mutual correlation matrix is determined, the application potential of various levels of technical measures is evaluated, and the multi-level development potential of the target oil field can be calculated; at the same time, the method also realizes the development potential evaluation corresponding to the technical measures of different grades which are already applied in the local block and are applied in the same block and are to be applied in the test stage, and has higher reference value for the actual production of the mine field.

The invention discloses a stockpiling surface prediction method based on mine field environment perception. Firstly, mine field environment sensing is carried out, stockpiling and walls are classified, and stockpiling surface prediction is completed on the basis. The mine field environment sensing comprises the steps of point cloud preprocessing, registration, fusion, horizontal calibration, removal of useless points on the ground and above a stockpile, clustering, classification and extraction, and environment point cloud data is collected through a 3D laser radar; the environment sensing method comprises the steps of point cloud preprocessing, registration, fusion, horizontal calibration, removal of useless points on the ground and the like, clustering, classification and extraction. The stockpiling surface prediction model is established based on a Kd tree and K nearest neighbor search. According to the method, effective fusion of point cloud registration and segmentation methods is realized, the stockpiling points in the mine field environment can be effectively extracted and utilized, the stockpiling surface prediction model established based on the real stockpiling point cloud can be used for three-dimensional excavation volume calculation, and the accuracy of a calculation result can be realized.

The invention relates to a high-permeability oil and gas reservoir drilling and completion fluid protective capability mine field evaluating device in the oil and gas industry. The device mainly comprises a barrel, a plunger, a motor, a rotary blade, a sealing sleeve, a standard core, a pressure sensor, a fluid outlet and inlet switch, a high pressure nitrogen gas cylinder, a pressure reduction valve, a rock sample steel base, a connection pipeline, a computer and a clamping device base. In the drilling and completion fluid damage evaluation process, fluid pressure provides confining pressure for a rock sample, the drilling and completion fluid volume is a constant value, and the rock sample is prepared from target stratum outcrop. The rock sample of reservoir rock is damaged in a constant-pressure mode, and the rock sample gas log permeability damage degree is rapidly evaluated by monitoring the attenuation process of gas pressure in the barrel. The principle is reliable, operation is simple, and the gap of the high-permeability oil and gas reservoir drilling and completion fluid dynamic damage evaluating device for a mine field is filled. Drilling and completion fluid reservoir protective capacity evaluating device miniaturization is achieved, and conditions are provided for instant, timely and simple drilling and completion fluid protective capability evaluation of the mind field.

A mine destroyer round in the shape of a hollow aerodynamic disk containing explosively formed projectiles that fire toward the ground. A powered means such as a catapult or a mortar tube containing a contact explosive is used to launch the round over a mine field.

Disclosed herein is a method and computing system for illustrating elevations in an image corresponding to an area of interest that is at least a portion of a mine worksite. The method includes determining, by a selection, a first dataset that includes a plurality of elevation values defining an elevation topography for a first area of interest. The method further includes, for each of the at least a portion of the elevation values in the first dataset, determining a corresponding colour for illustrating the elevation value according to a scale of colours. The scale spans a defined range of altitudes. Each colour in the scale is definable by a hue; and at least one parameter for influencing at least one of a lightness and a darkness of the colour. The colour scale is defined to progress through a spectrum of hues across the defined range of altitudes. The method also includes generating a first image portraying at least a 3-dimensional, non-plan view of the elevation topography for the first area of interest, illustrating the at least a portion of the elevation values of the first dataset in the corresponding determined colours.

The invention discloses a method for optimizing soaking time after volume fracturing of a shale gas well. The method comprises the steps that a rock sample is prepared according to rock of a shale reservoir section and dried to constant weight; a physical property index of the rock sample is obtained; a brittleness index of the rock sample is obtained; a hydrophilicity index of the rock sample isobtained; a clay mineral content and hydrophilicity index curve is fitted, and a clay mineral content critical value is determined; a rock sample hydration effect comprehensive index is determined according to the physical property index, the brittleness index and the hydrophilicity index of the rock sample; and a two-dimensional coordinate system and a four-region optimization plate are established according to the rock sample clay mineral content and the rock sample hydration effect comprehensive index, and the gas well soaking time is optimized according to the optimization plate. Accordingto the method, the shale gas well soaking time optimization plate is established, mine field engineers can quickly optimize the soaking time through the plate, and the cost of a long-time productiontest of a mine field is saved.

The invention provides a method for identifying oil-water layers in tight sandstone reservoirs, the method comprising the following steps: (1) performing nuclear magnetic resonance T2 spectrum measurement on oil- and water-containing tight sandstone reservoir cores obtained from sealed coring to obtain core oil and water phases T2 spectrum, calculate the movable fluid saturation M of the rock core; (2) process the rock core to shield the nuclear magnetic resonance signal of the water in the rock core, carry out the NMR T2 spectrum measurement on the processed rock core again, obtain the core oil phase T2 spectrum, calculate The oil saturation S of the rock core; (3) comparing the movable fluid saturation and the oil saturation, and judging the type of the oil-water layer of the rock core. The present invention utilizes the nuclear magnetic resonance technology to analyze and study the on-site airtight coring cores of tight sandstone reservoirs in oil field experiments, which can accurately identify the oil and water layers of tight sandstone reservoirs and determine, interpret and evaluate them, and can also calibrate and compare well logging interpretation results. The well results are accurate and the error is small.

In alternative embodiments, the invention provides processes and methods for the recovery or the removal of the so-called “Minor Elements” consisting of iron, aluminum and magnesium (expressed as oxides), from wet-process phosphoric acid using a continuous ion exchange approach. In alternative embodiments, use of processes and methods of the invention allows for the reduction of these Minor Elements with minimal phosphate losses and dilution in order to produce a phosphoric acid that is suitable for the production of fertilizer products such as world-class diammonium phosphate (DAP), merchant-grade phosphoric acid, superphosphoric acid, and other phosphoric acid products. Further, use of the invention would allow the use of lower grade phosphate rock or ore, which would greatly expand the potential phosphate rock reserve base for phosphate mining activities, and allow for better overall utilization of resources from a given developed mine site.

A method of making a cementitious composition comprises (a) selecting at least one pozzolanic particulate material; (b) selecting and grinding at least one feldspar material to a fineness of at least 3000 Blaine; (c) mixing calcium oxide or calcium hydroxide with gypsum; (d) mixing the ground feldspar with the lime-gypsum mixture to produce an activator; (e) conditioning the pozzolanic particulate material with an aqueous solution; (f) adding the activator to the conditioned material to produce a slurry; and (g) curing the slurry in a sealed container. The pozzolanic particulate material can be slag, fly ash, or siliceous rock. A cementitious composition of the invention comprises a pozzolanic particulate material, a ground feldspar material, a lime compound and gypsum, and uses readily available materials, as an economic replacement for Portland cement, fly ash or other materials in filling, backfilling and paving, particularly for backfilling or stabilizing mine sites.

The invention discloses a raw coal sample making method. The raw coal sample making method comprises the following steps of: (1) firstly, placing an original coal block taken from a coal mine site in a box body, casting concrete into the box body to ensure that the concrete is full of all gaps between the original coal block and the box body; (2) after the concrete is completely hardened, sampling the coal block by using a drilling sampler; and (3) finally, grinding the drilled coal sample into a coal sample with a size required by an experiment, and placing the made original coal sample in a drying box for later use in the experiment. According to the invention, the effective raw coal sample making method is provided to increase the making success rate of the raw coal sample.