13 results about "Open-pit mining" patented technology

A long arm type compact wheel bucket excavator relates to mechanical equipment for open pit mining, comprising a supporting mechanism, a bucket wheel driving mechanism, a discharging arm rotating mechanism, a crawler walking mechanism and a tensioning mechanism, the discharging arm rotating mechanism comprising a main machine walking mechanism, a supporting base assembly, a rotating platform assembly and an adjusting plate assembly; the supporting base assembly comprising a central pipe vertically fixed on the main machine walking mechanism and a mounting seat fixed on the central pipe; the rotating platform assembly comprising a rotating platform rotatably supported on an L-shaped beam; the adjusting plate assembly comprising an adjusting plate body, a lower connecting shaft slide way symmetrically arranged on both sides of the adjusting plate body and an upper connecting shaft slide groove symmetrically arranged on the other two sides of the adjusting plate body, the guide directions of the lower connecting shaft slide way and the upper connecting shaft slide groove being perpendicular to each other. The wheel bucket excavator does not need to additionally set a reclaimer and will not generate triangular coal, and has the advantages of good stress characteristics, good safety and the like.

The application discloses a kind of V-shaped slope stability calculation method and system, it is related to strip mining technical field.Based on three-dimensional numerical simulation technology, determine its failure mode first determine the spatial form equation of potential sliding body, then the sliding body is divided into regional division micro column, through constitutive relation and static equilibrium condition, the stress state of micro column is solved, the force of each row micro column is superposed along the direction of main sliding surface, and the two-dimensional equivalent shear strength parameters with three-dimensional effect on each row of main sliding surface micro column are obtained using equivalent idea, then the three-dimensional V-shaped slope stability coefficient is derived using rigid body limit equilibrium method.The application avoids the problems of high calculation cost, difficult parameter determination and complex calculation process in the traditional three-dimensional slope stability calculation method, solves the three-dimensional stability problem of this special form slope, provides more reliable theory and technology for the design, mining, prevention and management of slope, and has important practical significance for ensuring mining safety and efficient production.

This invention belongs to the field of open-pit iron ore mining technology, and particularly relates to a method for exploring deep water-filled goaf areas in open-pit iron ore mines based on transient electromagnetic methods. The specific steps are as follows: A transmitting wire frame is deployed at the edge of the open-pit iron ore platform to collect induced voltage signals; the location of the water-filled goaf area is predicted by comparing the induced voltage. The size of the transmitting wire frame is adjusted and deployed in areas suspected of having water-filled goaf areas below, and induced voltage signals are collected again; the top position of the water-filled goaf area is determined by comparing the induced voltage. The transmitting wire frame is moved to the first platform below the top of the water-filled goaf area, and the signal acquisition probe is moved to the first platform below the platform where the transmitting wire frame is located. The transmitting wire frame and the signal acquisition probe are moved down platform by platform, and induced voltage signals are collected again; the bottom position of the water-filled goaf area is determined by comparing the induced voltage. This method determines the extent of the water-filled goaf area by comparing the maximum voltage values ​​collected on different platforms and the corresponding times, thus avoiding safety hazards.

The application discloses a kind of open-pit mining mine annual resource quantity monitoring method and system, it is related to mine resource monitoring technical field, the method includes: obtaining multi-source remote sensing data, and the multi-source remote sensing data is carried out data screening and control point correction preprocessing, obtain the multi-source remote sensing data after preprocessing;Based on the multi-source remote sensing data after preprocessing, DEM extraction, DEM normalization and 3D butt joint ore body processing are carried out, obtain the butt joint three-dimensional ore body model;According to the butt joint three-dimensional ore body model, the earthwork of open-pit mining area is calculated;Based on the earthwork, the annual resource quantity of open-pit mine is calculated;Based on the annual resource quantity of open-pit mine, using vector and raster superposition method, annual resource quantity monitoring result map of open-pit mine is generated.The application can improve the precision and efficiency of mine annual resource quantity monitoring.

The application discloses a method for constructing an internal dumping site based on a fly ash-based cementing material carbon dioxide storage, and utilizes the cementing properties of fly ash of a pit mouth coal-fired power plant to prepare a fly ash-based cementing material with super high content, and utilizes the high-strength fly ash-based cementing material to construct a carbon dioxide storage, and utilizes a cement-free low-strength fly ash-based cementing material to backfill an open-pit mine pit, so that the resource utilization and efficient collaborative disposal of fly ash solid waste are realized; the carbon dioxide storage is constructed in the internal dumping site space, the open-pit mining space is effectively utilized, and the problem of insufficient material for land reclamation backfilling in the late mining stage is solved; the carbon dioxide storage reinforced by the anchor rod prestress has high strength and large internal space, the mine pit bottom plate impermeable layer and the overlying clay cover layer increase the airtightness, and the safe and efficient large-scale storage of critical state carbon dioxide is realized; the fly ash-based cementing material can mineralize carbon dioxide in a humid environment, increases the carbon dioxide storage amount, and improves the carbon dioxide storage strength and airtightness.

The utility model discloses a kind of transport equipment suitable for open-pit mining, it is related to open-pit mining technical field;And the utility model includes conveyor belt equipment, the bottom end side of conveyor belt equipment is equipped with the cleaning mechanism of cooperation use, and conveyor belt equipment is equipped with the collecting mechanism of cooperation use with cleaning mechanism;Cleaning mechanism includes rotary drum, rotary tube and motor, rotary drum and rotary tube are respectively rotationally inserted in the both sides upper end of conveyor belt equipment, and the end portion of rotary drum is fixedly sleeved with gear ring, the upper end of the side of conveyor belt equipment is penetrated and is equipped with rotary hole one, and rotary drum rotationally inserts in rotary hole one;Through the setting use of cleaning mechanism, brush roll can be driven to rotate slowly and make the moving direction of contact part of brush roll and conveying track opposite, thereby can effectively clean the ore dust attached to the outer wall of conveying track feeding side, and provide convenience for the insertion and separation of insertion rod and insertion hole, and then provide convenience for the disassembly of brush roll.

The utility model relates to a kind of open-pit mining blasthole axial slitting device, including cylinder, the threaded column is threaded cylinder upper end, and multiple groups of guide mechanism and multiple groups of cutting mechanism are arranged at interval in lower end, and guide mechanism and cutting mechanism are alternately arranged;The guide mechanism is arranged on the outer surface of cylinder;The cutting mechanism is arranged in the reserved cavity that is previously opened in cylinder interior, and the cutting mechanism can be telescopic adjustment.The utility model uses electric push rod and driving motor to control the extension and rotation of cutting wheel, can flexibly adjust cutting depth and direction according to different design and cutting demand, cutting wheel is retracted after construction, the integrity of blasthole wall can also be ensured, combined with intelligent control mode, the control precision of cutting action can be further improved, ensure the uniformity and consistency of slitting, significantly improve the flexibility, adaptability and accuracy of cutting.

This application proposes a method for controlling the safe boundary of open-pit coal mines in areas with landslide risk. It belongs to the field of open-pit mining technology. First, localized transverse mining and backfilling, along with localized slope reinforcement, are simultaneously carried out on both sides of the landslide risk area. Then, alternating longitudinal and transverse mining methods are used in both the landslide risk and non-landslide risk areas. Based on the slope stability coefficient at each stage, construction parameters are determined for each stage. A finite element analysis model is established based on these parameters to determine the tracking distance for transverse mining and backfilling. Finally, a plan view of the engineering location at each stage is drawn to guide open-pit coal mine mining. This method considers how to treat localized landslide risk areas and how to achieve boundary protection after treatment, avoiding the problem of delayed landslide risk area treatment and providing effective technical support for subsequent landslide risk area treatment and mining in open-pit coal mines.

The present application relates to the technical field of open-pit mining, in particular to an open-pit mining method for a multi-vein complex rare earth ore section, which determines the ore body strike and working bank advancing direction, sets out the mining steps along the advancing direction of the working bank, and sets a strip on the mining steps and sequentially cycles the stripping according to the strip; a slag zone is reserved on the strip free face, a blasting area is arranged vertically to the strip strike, and the perforation, sampling and blasting operations are sequentially completed; the sampling material in the blast hole is tested, and several sections along the strip strike are divided and marked; the mining and transportation scheme of the ore quality is determined and the mining and transportation are performed. The method solves the problems of frequent changes in the nature of the working face ore rock, unstable ore quality, and difficulty in blasting and mining, and achieves the purpose of stabilizing the target raw ore quality for selection, providing protection for the downstream beneficiation process. The method can effectively reduce the ore dilution rate and improve the ore resource recovery rate. Through the ore blending scheme feedback, the stable production and operation of the mine can be ensured.

The utility model relates to the technical field of mine transportation, and concretely relates to a small ore material carrying equipment for open pit mining, which comprises a vehicle frame, a carriage rotatably connected to the vehicle frame, two guide rails installed at the top end of the carriage, sliding blocks slidably connected in the guide rails, a mounting bracket fixedly connected between the two sliding blocks, a scraper provided at the bottom end of the mounting bracket, the scraper being slidably connected to the carriage, a cleaning brush rotatably connected to each end of the mounting bracket towards the inner wall of the carriage, the cleaning brush being in rolling contact with the inner wall of the carriage, a discharging structure installed on the carriage, a side door rotatably connected to the side of the carriage hinged to the vehicle frame, and a dust falling structure installed on the side door. The cleaning structure is arranged on the carriage, and the scraper is used to remove the large-area residual material on the bottom plate after discharging, and the cleaning brush is used to remove the adhered ore material on the inner wall, so that the problem of residual material with high viscosity, high humidity or fine granularity can be solved without manual cleaning, thereby reducing the operation cost and labor intensity.

The utility model relates to the field of surveying and mapping engineering technique discloses a kind of unmanned aerial vehicle equipment for open pit mining quantity calculation, including bottom plate and unmanned aerial vehicle body, the bottom plate inside is provided with buffer mechanism, the bottom plate inside is fixedly connected with multiple dampings, the damping top is fixedly connected with stop station, the unmanned aerial vehicle body bottom is equipped with detection camera, the detection camera top is provided with cleaning mechanism, the buffer mechanism includes two sliding rods, the sliding rod is fixedly connected in the bottom plate, the sliding rod outside is equipped with spring, the sliding rod outside is slidably connected with two sliding blocks one, the sliding block one inside is rotatably connected with rotating plate. In the utility model, when unmanned aerial vehicle body lands, sliding rod, spring, sliding block one, rotating plate and damping constitute buffer mechanism to absorb impact force, reduce equipment damage;Bottom plate bottom adjusting support leg adjusts height, guarantees parking stability, improves complex environment applicability.

This application proposes a method for dynamic replacement and coordinated construction of local support structures in open-pit mines, belonging to the field of open-pit mining technology. The method includes: determining the morphological parameters of the local support structures based on the engineering geological profile of the internal spoil heap, the physical and mechanical parameters of the slope's soil and rock, and the slope's safety reserve coefficient; and conducting dynamic replacement and coordinated construction of the local support structures based on the mining parameters of the cross-cutting working face, the spoil heap disposal parameters, and the morphological parameters of the local support structures. This includes: dynamically dismantling the old local support structures and dynamically establishing new ones; and rearranging the transportation system according to transportation system layout principles during the period of dynamic dismantling of the old local support structures and dynamic establishment of the new ones. This method can simultaneously dismantle old local support structures and construct new ones, enabling the recovery of coal resources overlying the old local support structures, expanding the volume of the internal spoil heap, improving slope stability, reducing production costs, and resulting in significant economic benefits.