15results about How to "Reduce mining costs" patented technology

The invention discloses a method for optimizing key structure parameters of a deep well electric submersible pump based on performance simulation, and relates to the technical field of design optimization of electric submersible pumps, a three-dimensional geometric model of a deep well submersible centrifugal pump is built in advance, the three-dimensional geometric model comprises an impeller, a guide shell, a pump shaft, a pump shell, an upper connector, a lower connector and a full-flow-channel structure, and initial structure parameters are calibrated; and establishing a centrifugal pump simulation model based on a computational fluid dynamics technology, performing fluid domain extraction, grid division and grid independence verification on the three-dimensional geometric model, and setting fluid attributes, boundary conditions and a turbulence model. According to the method, a closed-loop iteration framework for simulation, optimization, evaluation and feedback is constructed by adopting a mode of coupling a computational fluid dynamics simulation technology and a genetic algorithm, the limitation of local parameter optimization in the prior art is broken through, systematic and collaborative optimization of key structure parameters of the submersible centrifugal pump is realized, and the method is suitable for large-scale popularization and application. And the efficiency of the optimization process and the final optimization effect are obviously improved.

The utility model discloses a kind of ore screening equipment for coal mining, including base, base is the hollow cylinder of opening upwards, the elastic connection of base upper surface has receiving tray, receiving tray is the hollow cylinder of opening upwards, receiving tray side elevation is provided with discharge port one, discharge port one is connected with guide chute, vibration mechanism is arranged in base interior, vibration mechanism is connected with receiving tray, receiving tray upper surface is stacked with several sieve barrels by detachable connection mode, several sieve barrels are detachably connected, sieve barrel is circular tubular, sieve barrel side elevation is provided with discharge port two, discharge port two is connected with guide chute, sieve barrel is connected with screening element, screening element is equipped with sieve hole, the aperture of sieve hole of upper screening element is greater than the aperture of sieve hole of lower screening element. By stacking several sieve barrels, and being equipped with screening element of different sieve hole aperture, so as to realize the purpose that a screening operation can separate multiple particle size grade ores.

The present application relates to the technical field of oilfield reservoir reconstruction, and particularly relates to a coiled tubing mechanical control type double-seal drag fracturing equipment and a fracturing method. The method comprises the following steps: taking a reference layer section as a reference, analyzing temperature changes of each sampling position in a target layer section in a target period to obtain a plurality of temperature difference data, and performing local peak point detection on the temperature difference data to determine a plurality of temperature difference local peak data; then, in the plurality of temperature difference local peak data, analyzing a peak height, a peak width and a fracturing balance time of each temperature difference local peak data to determine a probability that each temperature difference local peak data indicates a main fracture, and then identifying a target sampling position indicating the main fracture according to the probability; finally, determining whether to stop fracturing operation of the target layer section according to temperature changes of a plurality of target sampling positions and a number of the plurality of target sampling positions. The present application can output a fracturing operation detection result with high timeliness, avoid unnecessary consumption of fracturing fluid, and reduce the exploitation cost of low-permeability and tight reservoirs.

The utility model provides a kind of broken material collecting device and mining machine, the bottom of hopper is provided with discharge port, power mechanism is set to the end of hopper, rotating shaft is rotatably set in hopper, and transmission connection with power mechanism, the outer surface of rotating shaft is equipped with the spiral structure for conveying material to discharge port, crushing assembly is set to the surface of rotating shaft. Through the above-mentioned broken material collecting device disclosed, rotating shaft is rotated by power mechanism, so that crushing assembly arranged on rotating shaft crushes material, and material is conveyed by the spiral structure of rotating shaft, so that crushed material is timely discharged through discharge port to realize continuous mining of material, compared with the existing mining equipment, the crushing system and material collecting device integrated design can not only reduce mining process, but also simplify the operation complexity and management difficulty of mining equipment, ensure the lump coal rate of coal, reduce mining cost, improve mining efficiency.

The application discloses a kind of parallel thin vein mechanized mining method, by using the way of half intra-vein in parallel vein interval to construct slope, it is back to construction in vein interval, simultaneously, using the mining layering in vein as intra-vein walking passage, using double layering synchronous stoping mode in vein, can effectively reduce the engineering quantity of slope, simplify mining preparation engineering, realize low mining cutting ratio, small engineering quantity mining preparation.Meanwhile, by constructing ore chute in vein interval, using rock drilling jumbo to drill rock for layering stoping, using shovel-truck to mine, can improve the degree of mechanization, reduce overall engineering quantity, reduce mining cutting ratio, and further reduce overall mining cost, achieve the purpose of parallel thin vein mechanized mining.This parallel thin vein mechanized mining method can realize the angle adjustment of vein interval slope, and is suitable for the mechanized efficient mining of thin vein with a vein inclination of more than 30°.

A composite double well fire flooding method for low permeability difference oil layer belongs to the technical field of artificial auxiliary viscosity reduction technology in tertiary oil recovery process. The composite double well low permeability reservoir development process is as follows: two wells are drilled at all well sites in the oil production core area, one is a composite oil production well, and the other is a fire flooding air injection well. All the drilled wells at the outer edge of the reservoir are single oil production wells. The fire flooding air injection well in the well pattern supplements the high production layer and is ignited by physical and chemical methods. Any oil production well in the well pattern cannot supplement the fire flooding layer. The present application has the following characteristics: the composite double well fire flooding technology absorbs the advantages of steam huff and puff development, steam flooding, fire flooding and other development methods, has low cost, good effect, reduces labor intensity and saves human resources.

This utility model discloses an integrated dust control device for ore unloading openings in roadways, including a top baffle. The top baffle has a semi-circular structure and is vertically installed at the top of the connecting roadway of the ore pass. A strip-shaped rubber dust curtain is suspended below the top baffle. A connecting opening for installing a side suction hood is provided on the lower side of the top baffle. One end of the dust removal duct is connected to the side suction hood, and the other end is connected to a wet vibrating grid dust collector. The spray dust suppression device includes a horizontal support plate and atomizing nozzles. The horizontal support plate is located above the connecting roadway of the ore pass, and atomizing nozzles are installed at intervals at the bottom of the horizontal support plate. This utility model uses the top baffle to block the airflow of dust from spreading to the main roadway. The strip-shaped rubber dust curtain and flexible sealant further seal the dust escape path. The dust is transported to the wet vibrating grid dust collector for purification through the inclined dust removal duct. Fine dust that is not captured enters the second line of defense. The atomizing nozzles spray high-pressure water mist to envelop the dust, causing it to agglomerate and settle.

The invention provides an in-vein S-shaped ramp open-stoping subsequent filling mining method for a gently inclined thick and large ore body, which comprises the following steps of: establishing an ore body three-dimensional model, and decomposing an ore body bottom plate contour line; constructing a middle-section haulage roadway; an in-vein S-shaped slope ramp is tunneled, and the S-shaped slope ramp is communicated with the middle section haulage roadway; two steps of stopes are divided on the left side and the right side of the S-shaped slope ramp, a connection roadway is tunneled from the S-shaped slope ramp and is communicated with the rock drilling roadway, and a cutting transverse roadway is constructed from the rock drilling roadway of the stope stoping boundary in the width direction of the stope; a linear slope ramp is constructed from the highest position of the S-shaped slope ramp, and a filling return air connection road is tunneled; the cutting courtyard is constructed, upward parallel blast holes are constructed in the cutting transverse roadway, and cutting grooves are formed through blasting; an upward fan-shaped medium-length hole is constructed in the rock drilling roadway, a flat bottom structure is formed through blasting, ore is transported out of the S-shaped slope ramp, and roof contact is filled after stoping is completed; and the comprehensive economic benefit of mining is comprehensively improved.

This invention relates to a dynamic optimization decision-making model for the mining sequence of polymetallic symbiotic ore bodies, comprising an edge layer, a cloud platform, and a control terminal. The edge layer, cloud platform, and control terminal interact through dedicated interfaces, achieving a closed-loop process from data acquisition, processing, decision-making, to execution. The edge layer acquires ore body data in real time via a multi-source sensor network, preprocesses it through an edge computing terminal, and then uploads it to the cloud platform. The cloud platform uses a dynamic geological model engine to construct a real-time 3D ore body model and generates a Pareto optimal mining scheme that comprehensively considers economic, environmental, and safety factors through a multi-objective optimization engine. The control terminal uses a digital twin console to visualize the scheme and allow for manual intervention, while the equipment control system automatically executes mining commands. The model supports hourly dynamic updates, significantly improving resource recovery rate and decision-making efficiency, reducing environmental costs and mining risks, and achieving efficient, intelligent, and green mining of polymetallic symbiotic ore bodies.

The present application relates to the technical field of ocean oil and gas exploitation, and particularly relates to a kind of subsea combustible ice exploitation process method, comprising determining combustible ice deposit exploitation area and positioning sea surface exploitation ship;The capture box is placed above the combustible ice reservoir and fixed, and the skirt is sealed;Multiple high-voltage pulse electrodes are inserted into the reservoir in an array form;Then, high-voltage power supply on the exploitation ship is used to continuously input high-voltage electric pulse into the electrodes, and the electric field, joule heating effect and stress wave generated by the high-voltage electric pulse are used to cooperate to destroy the crystalline structure of combustible ice and make it decompose and release methane;After the methane gas escapes in the subsea silt and is collected by the box, it is transported to the purification device of the sea surface exploitation ship through the transport pipeline connected to the capture box, and the methane product is obtained after purification treatment and storage. The present application has the advantages of simple process, low energy consumption, small disturbance to geological environment, and is suitable for large-scale subsea combustible ice exploitation.

The application relates to a kind of semi-automatic positioning method and system, the method comprises: obtaining the starting plane coordinate and end point plane coordinate of target hole site;Obtain drill rod position coordinate and drill rod inclination;Distance error is calculated based on drill rod position coordinate and starting plane coordinate;Theoretical inclination is calculated based on starting plane coordinate and end point plane coordinate;Angle error is calculated based on drill rod inclination and theoretical inclination;When the angle error and distance error are located in the preset error range, positioning operation is completed;Otherwise, based on the angle error and distance error control push beam swing until the angle error and distance error are located in the preset error range.The method is used when distance error and inclination error are in the preset error range, and the positioning operation between drill rod and target hole site is completed, so that the inclination and hole diameter of drill rod hole forming are consistent with the theoretically set inclination and hole diameter of hole forming, the blasting efficiency is improved, and the mining cost is reduced.

The invention discloses a repeated transformation method based on block multi-well physical property and production parameter comparison, and belongs to the technical field of oil field exploration and development borehole operation, and the method comprises the following steps: 1, preliminarily determining repeated transformation measures according to the physical property of a target block reservoir; 2, further optimizing repeated reconstruction measures according to the production effect of the adjacent well; and 3, determining the repeated transformation scale according to the number and density of adjacent wells. On the basis of systematization, comprehensiveness and process, the technology is optimized from area (macroscopic) to adjacent well (mesoscopic) to single well (microscopic) and from geology to engineering to production; on the basis of physical property parameters of each well in a target block and the condition of an early-stage transformation process, shaft integrity evaluation is carried out in combination with the production effect of each well.

The invention discloses a hydrate in-situ exploitation gas-liquid-solid separation device which comprises an outer cylinder, a bottom cover is arranged at one end of the outer cylinder, a backflow sleeve is fixed to the inner wall of the other end of the outer cylinder, first through holes are formed in the two ends of the backflow sleeve, a filter screen pipe is fixedly connected to the end, opposite to the bottom cover, of the backflow sleeve, and a plurality of screen holes are formed in the pipe wall of the filter screen pipe. A spiral blade is wound on the outer wall of the filter sieve tube; the device further comprises a feeding pipe, the feeding pipe penetrates through the first through hole, the end, located in the filter screen pipe, of the feeding pipe is fixedly connected with a grinding mechanism, the side, away from the feeding pipe, of the grinding mechanism is fixedly connected with one end of a screw rod, and a transmission mechanism is arranged between the other end of the screw rod and the bottom cover. A hydrate decomposition space and a low-pressure environment are provided, gas, liquid and solid in the hydrate are separated, and the exploitation cost is reduced; mining failure caused by sand production of the shaft is effectively avoided, and the stable and reliable mining process can be guaranteed.

This invention relates to the field of quarrying equipment, and discloses an infrared-guided quarrying system and method. The quarrying system includes a trackless walking mechanism, a robotic arm mechanism, a cutting mechanism, a first infrared component, and a second infrared component. One end of the robotic arm mechanism is hinged to the trackless walking mechanism, and the other end is connected to the cutting mechanism, driving the cutting mechanism to move. One of the first and second infrared components is an infrared receiver, and the other is an infrared transmitter. The first infrared component is located at one end of the ore to be mined, and the second infrared component is located at the front end of the trackless walking mechanism. The first and second infrared components work together to guide the trackless walking mechanism to move in a straight line. Advantages of this invention: It can reduce mining costs, improve mining efficiency, and allow for a smaller overall equipment size, reducing space occupation.

This invention discloses an underground ore transportation and hoisting system and method. The hoisting system includes an ore slurry preparation system for preparing mined ore into a slurry that can be transported through pipelines. Its structural features include: an N-stage pipeline conveying subsystem, with adjacent subsystems connected in series along the vertical direction, where N is a positive integer and N≥2. Each pipeline conveying subsystem includes a pump, a slurry mixer, and a hoisting pipeline. The lower end of the hoisting pipeline is connected to the output of the pump, and the upper end is connected to the inlet of the mixer. The outlet of the mixer is connected to the input of the pump in the adjacent pipeline conveying subsystem above. The output of the ore slurry preparation system is connected to the inlet of the pump in the first-stage pipeline conveying subsystem via a conveying pipeline. This hoisting system solves the technical problem of segregation during long-distance upward transport of ore slurry.