31 results about "Surface mining" patented technology

The invention relates to the technical field of mining machine transmission mechanisms, in particular to an automatic tensioning system and an open-cast mining machine, and the automatic tensioning system comprises a speed reducer output wheel and a milling roller receiving wheel which are connected through a belt, and further comprises a tensioning part connected with the belt and used for adjusting the tensioning force of the belt; the control part is connected with the tensioning part and used for controlling the tensioning part to change the tensioning force of the belt; and the information acquisition module is used for acquiring the tensioning part information, the speed reducer output wheel information, the milling roller receiving wheel information, a first preset range value and a second preset range value. Compared with a traditional tensioning device of a fixed structure, the system can respond to the requirement for belt tensioning force change caused by various factors in the working process in real time, the appropriate tensioning degree of the belt is automatically maintained in the equipment operation process, the power transmission stability and the equipment operation efficiency are improved, and the system is suitable for popularization and application. And the equipment fault and the maintenance cost caused by the problems of belt slipping and the like are reduced.

The present application relates to the technical field of open-pit mining, in particular to a fully internal discharge period stripping and dumping balance method for open-pit coal mine, comprising: calculating internal discharge space utilization coefficient, ideal internal discharge space utilization coefficient and surplus dumping space; establishing a natural stripping and dumping curve, the natural stripping and dumping curve taking internal discharge space as horizontal coordinate and taking cumulative stripping amount as vertical coordinate, the slope of the natural stripping and dumping curve being internal discharge space utilization coefficient, defining the stage with slope less than ideal internal discharge space utilization coefficient as space surplus stage and defining the stage with slope greater than ideal internal discharge space utilization coefficient as space insufficient stage; finding a year limit set in which the sum of surplus dumping space of space insufficient stage and space surplus stage is 0; calculating the cost of each year limit in the year limit set and finding the year limit corresponding to the lowest cost, which is defined as optimal balance period; and formulating stripping and dumping operation plan by using the optimal balance period. The present application can judge the dumping space surplus and insufficient stages in fully internal discharge period, and improve internal discharge space utilization rate.

A rod feeding apparatus of the type used in underground and surface mining core drilling is disclosed. The apparatus has a receptacle configured to contain outer rods in a rod storage area. A rod discharging mechanism is configured to support the rods within the rod storage area, and actuatable to displace the rods upwardly and discharge one or more rods from the rod storage area. A rod dispenser associated with the receptacle is adapted to receive the one or more rods discharged from the rod storage area by action of the rod discharging mechanism, and to expose them onto a rod collection area of the rod dispenser for access.

The invention discloses a precious metal vein open-cast mining blasting parameter optimization intelligent calculation system, which comprises a data acquisition module, a double-target coupling algorithm module and an intelligent decision execution module, and is characterized in that the data acquisition module, the double-target coupling algorithm module and the intelligent decision execution module are in communication connection in sequence; the data acquisition module is used for acquiring vein geological grade data, carbon emission related data, slag recovery related data and equipment operation data; the dual-target coupling algorithm module is used for constructing a vein grade grade-rock stratum hardness-blasting energy parameter-carbon emission intensity quaternary mapping model on the basis of the collected data, and the vein grade grade-rock stratum hardness-blasting energy parameter-carbon emission intensity quaternary mapping model is constructed. Optimized weights are automatically distributed based on the vein grade, precise energy control blasting parameters are adopted for a high-grade area, and precious metal loss caused by excessive crushing is reduced; and optimizing the parameters of the low-grade area to guarantee the basic dissociation effect.

The present application relates to the technical field of strip mining machine, and particularly relates to a filter core life prediction method, an electronic device and a medium. The method constructs state information of the engineering machinery hydraulic circuit in a first preset time period into a plurality of sample features (each sample feature represents an operating state in a single preset unit time), and trains an original model to obtain a life prediction model, so that the model can learn the degradation law and time sequence characteristics of the filter core under different working conditions from historical operation samples. In actual application, real-time state information in a second preset time period is collected and input into the life prediction model, and the remaining service life of the filter core after the second preset time period is directly output.

The utility model relates to the technical field of blasting, in particular to a deep hole blasting device for open-cast mining, which reduces the shaking of an electric three-jaw chuck in the descending process, reduces the shaking of an explosive charge, prevents the explosive charge from colliding with the inner side wall of a deep hole when the explosive charge is put in the deep hole, and is high in safety and reliability. Comprising an electric moving trolley and an electric three-jaw chuck. A cavity is formed in the protection cylinder, the upper end and the lower end of the protection cylinder are open, the protection cylinder is installed on the electric moving vehicle through the lifting mechanism, the lifting mechanism is used for lifting the protection cylinder, the guide mechanism is installed on the electric three-jaw chuck and the protection cylinder, and the height adjusting mechanism is used for adjusting the height of the protection cylinder. The guide mechanism is used for guiding the electric three-jaw chuck, and the height adjusting mechanism is used for adjusting the height of the electric three-jaw chuck.

The invention discloses a crab-type deep-sea mining vehicle, which belongs to the technical field of underwater operation equipment, and comprises a vehicle body walking along a straight line, an ore plowing arm mounted at the front end of the vehicle body in the moving direction and capable of performing ore plowing action on a mining area on one side of the vehicle body, and a collecting arm mounted at the rear end of the vehicle body in the moving direction and used for collecting along the working path of the ore plowing arm, mining operation is completed in a mode of profiling crab movement, the plough arm and the collecting arm which are functionally differentiated in form are arranged, the plough arm is used for turning over the sediment mud surface, the collecting arm is used for collecting ore turned out of the sediment mud surface, the device is suitable for surface mining, suction equipment does not need to be used, and the risk of generating sediment plume is avoided from the source; according to the device, the disturbance to a deep sea ecological system is reduced, the requirement of sustainable development is met, meanwhile, the damage to the sediment mud surface is small, large-scale cutting equipment is not depended on, the device is compact in structure and low in gravity center, and subsidence on a soft sediment layer is effectively avoided.

The present application relates to coal mining technology field, especially to a kind of coal mine working face surface mining subsidence pit monitoring method and system, coal mine working face surface mining subsidence pit monitoring method includes: target hard difficult collapse rock stratum is reformed, to reduce the strength, integrity and integrity of target hard difficult collapse rock stratum;The roof strata of working face initial mining stage are carried out surrounding rock structure detection, determine the damage range, strength and joint fissure distribution of target hard difficult collapse rock stratum of working face initial mining stage roof;The roof strata of working face initial mining stage are carried out pre-splitting, damage the integrity and strength of target hard difficult collapse rock stratum;The position of working face mining predicted subsidence pit is grouted and filled;Monitoring working face initial mining stage mining working face roof strata microseismic event, surface real-time displacement and surface subsidence during working face mining process.Effectively control roadway under the influence of double thick coal seam and hard roof working face mining surface subsidence pit management problem.

The invention provides a coal mine perforation blasting high-temperature hole temperature measuring device and method, and relates to the technical field of open-cast mining perforation blasting and coal mine safety. The device comprises a temperature measuring assembly, a connecting cable, a concentrator, a digital display processing unit, an alarm unit, a data transmission module and a power supply. According to the invention, the temperature in the blast hole can be accurately measured in real time, and the high-temperature risk is pre-warned, so that the safety production of a coal mine is guaranteed.

The invention provides a method for calculating the safe distance between a dumping site outside a strip mine and a stope, and belongs to the technical field of open-cast mining design. The calculation method comprises the following steps: acquiring a safety distance between a slope base line of a lowermost step of the outer waste dump and a slope top line of an uppermost step of the stope according to respective slope forms of the outer waste dump and the stope, calculating a composite slope stability coefficient according to the safety distance, and comparing the slope stability coefficient with a slope safety reserve coefficient Fst, and the minimum safety distance meeting the safety requirement between the outer dumping site and the stope is obtained. According to the method, the slope stability change trend under different safety distances is researched, on the premise that the slope safety is guaranteed, the surface mine dumping distance is shortened, the economic benefits of the surface mine are improved, and the problem of reserving the safety distance between an outer dumping site and a stope is reasonably solved.

The invention provides a surface mining resource accurate positioning method, which relates to the field of mining, and comprises the following steps: obtaining the average grade of a sample of each drill hole in each production step of a mining area; the drill holes with the average grade larger than a first threshold value serve as resource enrichment drill holes; based on the grade interval and the distance between the resource enrichment drill holes, all the resource enrichment drill holes in each production step are divided into a plurality of ore body groups; dividing the reserve boundary of the ore body group on each production step according to the distance between the drill hole adjacent to the ore body group on each production step; according to the method, the system, the equipment and the medium for accurately positioning the open-cast mining resources, accurate positioning, closer to the actual field production, of the ore bodies on all the steps is achieved, and accurate positioning of the ore bodies on all the steps is achieved. And a more scientific design basis is provided for open-cast mining.

This invention discloses a big data-driven optimization method and system for tailings dam recovery schemes, relating to the field of mineral resource recovery and intelligent optimization technology. The system's operation includes: constructing a detailed three-dimensional digital model of the dam area; conducting value zoning evaluation to delineate high-value recovery zones and low-value replacement zones; implementing surface mining and pipeline transportation of high-value zones using a floating sand mining platform; simultaneously filling low-value materials into the goaf to maintain stress balance; and dynamically regulating the hydraulic system based on intelligent monitoring data of the entire dam area to ensure the safety of the dry beach length and phreatic line. The system comprises six modules: multi-source data acquisition, digital modeling, intelligent zoning evaluation, recovery operation execution, synchronous filling and reinforcement, and dynamic monitoring and balance control. This application achieves synergistic optimization of efficient high-value tailings recovery and dam structural safety through spatial replacement and dynamic balance mechanisms.

The application discloses a mining method for open-pit mine, which comprises the following steps: performing overall perforation on the blasting pile of open-pit mining, performing secondary ore circle on the blasting pile after the test result is obtained, optimizing the blasting sequence according to different types of ores or waste rocks and the free surface of blasting, performing regional blasting according to the blasting sequence, achieving the purpose of sub-blasting, creating conditions for sub-shovel and sub-loading, and reducing the loss and dilution rate of mining.

The invention discloses an electric control method and an electric control system for cutting pick replacement of an open-cast mining machine, and belongs to the technical field of coal mining equipment. According to the electric control method, the operation box controls the motor to drive the cutting pick roller to rotate, then the controller controls the cutting pick replacing tool to replace damaged cutting picks, traditional manual operation is replaced, the cutting pick replacing tool greatly reduces the manual operation intensity, the replacing time of a single cutting pick is shortened, the replacing efficiency is effectively improved, and meanwhile the replacement cost is reduced. According to the method, a front safety barrier is constructed through forced safety logic that a toolbox is opened to trigger a sensor, the sensor transmits a first signal to a controller, and the controller responds to and controls a mining machine to stop. When a worker opens the tool storage box and prepares to replace cutting picks, the system automatically stops the mining machine, the risk that a roller rotates accidentally or parts are operated mistakenly due to the fact that a motor and a hydraulic system are started due to misoperation in traditional manual replacement is avoided from the source, and the personal safety of the worker during short-distance operation is guaranteed.

The invention discloses an underwater cluster type green mining system and method, and relates to the technical field of deep sea mining, and the underwater cluster type green mining system is composed of a wave energy power generation device, a storage cabin, an energy storage ball, a collecting and processing device, an underwater mining vehicle and a mining ship. The wave energy power generation device captures wave energy and stores the wave energy in an energy storage ball on the seabed, the energy storage ball supplies power to the collecting and processing device through a cable, the collecting and processing device wirelessly charges the underwater mining vehicle through a wireless charging transmitting end and a wireless charging receiving end, and the underwater mining vehicle collects minerals and sends the minerals to the collecting and processing device. And the ore is conveyed to a storage cabin on the sea surface through an ore lifting vertical pipe and a conveying pump and collected by a mining ship. The wave energy power generation device captures renewable wave energy and replaces diesel oil for power generation, electric power supply of a sea surface mining ship is not needed, an underwater mining vehicle and a collecting and processing device are deployed on the seabed, mining operation is prevented from being affected by sea surface extreme weather, and uninterrupted green mining all the year round is achieved.

The invention relates to a simulation method designed to provide an immersive experience to users in virtual environments in which heavy machinery is used, for example the mining, agriculture, port, maritime, electrical or construction industries. The method includes virtual reality anchor markers for positioning the user inside the compartment of a piece of heavy machinery or any type of structure, and comprises precisely simulating operation in underground and open-pit mining environments, agricultural fields and large constructions or movements of earth, without including sophisticated hardware other than a virtual reality headset.

The invention provides a surface mine transportation channel based on edge diversion, belongs to the technical field of surface mining transportation, and solves the problems that the mining quantity is large, the transportation efficiency is low and the traffic safety risk is high. The first connection cutting and the second connection cutting are arranged at the edges of the two ends of the mining horizontal operation platform respectively; and each of the first connection cutting and the second connection cutting comprises an inlet section horizontally connected with the upper part, a straight connection section connected with the edge of the mining horizontal operation platform, and an outlet section horizontally connected with the lower part. According to the method, the prepared mining quantity of the stope center is released, the resource recovery rate and economic benefits are improved, and meanwhile the passage capacity and the transportation safety are improved.

This invention discloses a surface mining intensity index calculation model based on mining parameters. It uses mining width, mining depth, loose layer thickness, mining face thickness, and mining speed as factors to evaluate surface mining intensity. A 3x3 Boltzmann calculation model is constructed to obtain a surface mining intensity coefficient, which is then used as an index to measure surface mining intensity. This invention, by considering four mining parameters—mining thickness, mining depth, working face width, and working face advance speed—to obtain the surface mining intensity coefficient, provides a more comprehensive evaluation compared to previous methods that used mining sufficiency and whether the surface had reached the critical maximum subsidence value.

The invention provides a cutting roller and an open-cast mining machine, and belongs to the technical field of strip mine rock soil stripping equipment.The cutting roller comprises a roller body, a material throwing plate and a cutting tooth seat, the cutting tooth seat and the material throwing plate are both arranged on the side face of the roller body and synchronously rotate along with the roller body, and the cutting tooth seat is used for stripping mineral materials on a working face; the material throwing plate is used for throwing stripped mineral materials, the barrel is selected to be of a structure comprising large-diameter sections and a small-diameter section, the diameter of the large-diameter sections is larger than that of the small-diameter section, the two large-diameter sections are arranged at the two axial ends of the small-diameter section respectively and are coaxially arranged, and the side face of the small-diameter section and the end faces of the two large-diameter sections form a material storage space. The storage space is located in the middle of the barrel and used for temporarily storing the stripped mineral materials, and the problem that the mineral materials are scattered due to the fact that a traditional cylindrical barrel does not have a storage area is solved.

1. Name of the product in this design: Open-pit mining vehicle (large). 2. Application of this design: This design is intended for use in open-pit mining equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The invention discloses an emergency starting system of an open-cast mining machine, which comprises a set of main hydraulic loop and a set of independent standby power unit which are connected through a multi-position reversing valve. Through oil way switching of the multi-position reversing valve, when an engine works normally, the main hydraulic system and the standby power unit system operate independently; when the engine breaks down, the reversing valve is operated to switch oil ways, so that pressure oil of the standby power unit enters the oil cylinder control valve of the main system, the oil cylinder for controlling the core safety function of the whole machine is driven to conduct emergency operation, and therefore the mining machine is adjusted to be in a safe state. The invention provides a built-in, reliable and easy-to-operate emergency power scheme for the engine fault of the open-cast mining machine, solves the problems that the state of the whole machine cannot be adjusted when the engine fault occurs, and the operation is difficult and unsafe by depending on external equipment, remarkably reduces the labor intensity and potential safety hazards of operators, and improves the working efficiency. And the reliability and the safety of the whole machine are improved.

This invention belongs to the field of coalbed methane extraction technology, specifically relating to a method for enhancing coalbed methane production in structural coalfields. Addressing the shortcomings of poor fracture system connectivity and ineffective conventional hydraulic fracturing in structural coalfield development zones, this invention combines radial borehole technology with electro-pulse technology to enhance coal seam production, achieving high-yield and high-efficiency coalbed methane development in structural coalfields. The method involves: arranging multi-layered, multi-directional radial boreholes in the coal seam section exposed by the vertical wellbore of the coalbed methane surface well, based on the coal seam geological conditions; after well flushing, using electro-pulse technology to impact radial boreholes layer by layer. The multi-layered, multi-directional, long-distance radial boreholes of this invention effectively connect the fracture system around the wellbore, significantly increasing the single-well control area of ​​coalbed methane wells in structural coalfield development zones. The high-energy shock waves generated by the electro-pulse technology further enhance the coal reservoir through fracture creation, unblocking, and desorption promotion effects.

The utility model provides an anchoring and pushing device and a conveying and transferring system, relates to the technical field of open-cast mining supporting and pushing equipment, and aims to optimize the structure of the pushing device to a certain extent and improve the propelling efficiency and the positioning stability of the conveying and transferring equipment. The utility model provides an anchoring pushing device. The anchoring pushing device comprises a main body, a positioning mechanism and a pushing mechanism, the positioning mechanism is connected with the main body and comprises a driving component and a positioning component, and the driving component can drive the positioning component to rotate, so that one end of the positioning component can be drilled into or screwed out of the ground; the pushing mechanism comprises a pushing component, and the positioning end of the pushing component or the telescopic end of the pushing component is connected with the body.

The invention discloses a metal mine underground-to-open-pit mining method, which belongs to the technical field of mine engineering, and comprises the following steps: exploring a goaf and a subsidence area to obtain a spatial three-dimensional model and an ore body geometrical shape model; the ore body is divided into a regular area and a branch area according to the geometric model of the ore body, the regular area refers to the regular part of the geometric shape of the ore body, and the branch area refers to the ore body which extends out of the regular area and is smaller than the ore body of the regular area in size; and the regular area is set as an open-pit mining area, the branch area is set as an underground mining area, and stoping is carried out respectively. By means of the collaborative process of exploration modeling, ore body zoning and stoping in different modes, safety risks are avoided through a model, stoping is conducted in different areas through a zoning matching mining mode, and productivity transition work in the process of converting underground mining into open-pit mining of the metal mine is guaranteed.

A surface mining apparatus is provided. The surface mining apparatus includes a base (102), a drive system (104) connected to the base operable to move the base relative to a surface, and a cutting system (108) coupled to the base at a mount point (116) on the base. The cutting system includes a lift assembly (110) and a cutting attachment (112) coupled to the lift assembly. The cutting attachment includes a drum (150) having a plurality of cutting teeth (152) and is operable to pivot about a pivot axis extending through the mount point when the lift assembly is engaged. The plurality of cutting teeth is operable to cut into the surface when the drum is rotated about a drum axis. The pivot axis is positioned at a vertical distance from the surface to maintain a center of gravity of the surface mining apparatus that supports the cutting system via coupling to the base at the mount point.

The utility model provides an ore lifting device for a surface mine, and belongs to the technical field of surface mining, and the ore lifting device is characterized in that a supporting assembly supports a lifting rope, a driving assembly drives a winding assembly to rotate, the lifting rope is released, an ore barrel assembly at the tail end of the lifting rope is made to descend, and ore at a low position is conveniently put into the ore barrel assembly; when the driving assembly drives the winding assembly to rotate and withdraw the lifting rope, the ore barrel assembly is lifted by the lifting rope, ore is lifted and conveyed to a high position, then lifting and conveying of the ore are completed through releasing and withdrawing of the lifting rope, the lifting equipment is convenient to install, the height range of ore lifting is slightly limited by the equipment, and the service life of the ore lifting equipment is prolonged. By adjusting the releasing length of the lifting rope, the height of the ore barrel assembly can be controlled, the ore barrel assembly can adapt to different landform heights of ore plants, operation is easy, ores of different heights can be lifted to the same height position, the ore barrel assembly can adapt to different ore bed conditions, ore lifting continuity is guaranteed, and ore lifting efficiency can be improved.

The invention discloses a method for controlling the stripping thickness of an open-cast mining machine under a complex terrain condition, which comprises the following steps of: stripping a surface stripping layer to expose an ore body top plate, surveying and mapping the ore body top plate, importing surveying and mapping data into CAD (Computer Aided Design) software to generate a flat triangular net curved surface, and importing the flat triangular net curved surface into a control system of the open-cast mining machine to control the stripping thickness of the open-cast mining machine. After the stripping thickness is set in the control system, the open-cast mining machine conducts separate mining stripping till the ore body roof meets the target thickness; detecting the hardness of the ore, carrying out a stripping test according to a preset speed gradient, and analyzing to obtain the maximum stripping speed corresponding to different hardness of the ore; the ore hardness of a stope is detected before stripping operation, the corresponding mining speed is designed according to the maximum stripping speed corresponding to the ore hardness, the mining speed is marked on a stripping design drawing, and the stripping design drawing is imported into an Ovi map for stripping operation. It can be guaranteed that the stripping layer thickness of the mining machine meets the design requirement, the stripping speed of the mining machine can be guaranteed to the maximum extent, and therefore the purpose of improving the stripping efficiency of the mining machine is achieved.

The invention belongs to the field of change detection based on remote sensing images, and relates to a method for accurately detecting land utilization changes and illegal mining activities by fully utilizing multi-resolution information of images and enlarging a receptive field during feature extraction through an improved deep learning network structure. According to the improved algorithm provided by the invention, time, space and channel attention (STC-Attention) mechanisms are integrated into UNet + +, so that semantic representation of features is enhanced through multiple dimensions. The method mainly comprises the following steps: using time, space and channel attention modules in feature fusion stages of different scales so as to better fuse feature information of targets of different scales; a focus loss function (focus loss) is used to solve the problem of target category imbalance among a plurality of categories; and a post-processing step of a detection result is added, so that refining and denoising of a change detection segmentation image are realized. The method can adapt to the characteristics of multi-scale and diversified ground feature shapes in a complex open-cast mining environment, and the mining area change detection precision is improved.