374results about How to "Improve mining efficiency" patented technology

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

The invention discloses a hard rock stratum continuous excavation automatic cutting depth control method based on deep learning. The control method comprises the steps of establishment and training of a deep neural network model, pre-drilling fracturing operation and rock stratum strength parameter prediction, determination of a reasonable cutting depth control value and monitoring and control of continuous excavation operation. The cutting performance of the hard rock stratum is improved through pre-drilling fracturing operation, meanwhile, the strength parameter of the fractured rock stratum is predicted according to a deep learning algorithm, then a reasonable cutting depth value is determined, the excavation efficiency of continuous excavation equipment in the hard rock stratum environment can be improved, and the consumption of cutting tools is reduced; and then, according to real-time monitoring data and the trained deep neural network model, a current continuous mining equipment operation strategy is calculated in real time, so that real-time monitoring and control of the cutting depth, the cutting mechanism power and the mining working face flatness are realized, and improvement of the control precision, safety and automation of the continuous mining equipment is facilitated.

The invention provides a novel coal mining method for an open-air well-to-well worker. The novel coal mining method comprises the following steps: stoping by a slope coal mining machine; filling a mining cave, determining a filling process, selecting one of pumping filling, waste rock throwing machine filling or side upper part drill hole conveying filling in the filling process, and selecting filling materials according to a ratio of waste rock to concrete; carrying out slope stability calculation and analysis and slope monitoring, and carrying out mechanical analysis and calculation by adopting a limit equilibrium method and a finite element method. The invention provides a mining process system and complete equipment, including automation of coal mining and transportation, realization of automatic operation and connection of coal, mining and transportation equipment, improvement of coal mining efficiency and efficiency of a filling system, and realization of key technologies and processes of efficient paste filling, and provides an overlying strata stability monitoring control technology and equipment. The intelligent mining site is realized, the scientific and reasonable cooperation of mining, filling and slope stability monitoring is realized, and the connection is orderly and efficient.

The embodiment of the invention provides a method and device for monitoring upward and downward movement of a scraper conveyor based on point cloud registration, and the method comprises the steps: setting a target on the wall of a transportation roadway, obtaining a depth image of a target region, and carrying out the filtering and hole filling of the depth image of the target region, and obtaining a processed depth image of the target region; based on a world coordinate system established by taking image acquisition equipment as an original point, carrying out coordinate conversion on pixel coordinates and depth values in the depth image of the processed target area to obtain a three-dimensional point cloud; sequentially carrying out denoising, segmentation, down-sampling and clustering division processing on the three-dimensional point cloud to obtain a first target point cloud; based on the obtained target template point cloud and the first target point cloud, template point cloud features and target point cloud features are extracted; registering the target point cloud features and the template point cloud features for multiple times to obtain registered target point cloud; and based on the registered target point cloud and the world coordinate system, the upward-sliding and downward-sliding offset of the scraper conveyor is determined.

The invention discloses a mining plan making method and system, and relates to the technical field of automatic management, and the method comprises the steps: obtaining a mine image and environment data; extracting multi-dimensional features of the mine image, and fusing the multi-dimensional features to obtain fused features; inputting the fusion features into a recognition model to obtain a mineral recognition result; combining the environment data with the mineral identification result to form a mine environment-resource distribution map; and inputting the mine environment-resource distribution map into the mining model to obtain a mine mining plan. According to the mining plan based on machine vision and a large model, real-time and high-definition monitoring of the mine environment is achieved by integrating the high-precision camera shooting function and the advanced video processing technology, subjectivity and errors of manual judgment are reduced, the mining process is accelerated, optimal configuration and efficient utilization of resources are achieved, and the mining efficiency is improved. And higher production efficiency and economic benefits are brought to mine enterprises.

The invention discloses a CO2 geological storage coordinated shale oil and geothermal energy green development system and method. The system comprises a geothermal power station located on the ground, a ground cable, a CO2 injection device, a CO2 conveying pipeline, a CO2 / shale oil separation device, a shale oil conveying pipeline and a shale oil storage tank. Wherein the geothermal power station is connected with the CO2 injection device through a ground cable, the CO2 injection device is connected with the CO2 / shale oil separation device through a CO2 conveying pipeline, and the CO2 / shale oil separation device is connected with the shale oil storage tank through a shale oil conveying pipeline; through multiple utilization and innovative closed circulation of CO2, an efficient energy development system is built, the recovery ratio of shale oil is increased, geological storage of CO2 and geothermal energy development are achieved, energy consumption and carbon emission are reduced, and therefore the environmental pollution risk is effectively reduced, and unification of economic benefits and environmental benefits is achieved.

The invention discloses a planned cutting curve issuing control method based on a predictive coal cutting technology, and belongs to the technical field of coal mine collection. Comprising the following steps: acquiring coal mining machine operation cutting data; a mathematical model is established based on the predicted coal cutting data, and a next cutting prediction curve is obtained; monitoring the running state and environmental parameters of the coal mining machine in real time, and generating an optimal cutting planning curve path; an operator judges whether the cutting curve path is optimal or not, if not, the above steps are executed circularly, and if yes, the following steps are executed; and issuing the generated optimal cutting planning curve path to the coal mining machine. The invention provides a planned cutting curve issuing control method based on a predictive coal cutting technology, which can realize generation of a planned cutting curve of a next cut based on historical cutting data, can edit and issue in advance according to geological data, reduces manual intervention in a production process, improves mining efficiency, realizes visualization of a predictive coal cutting curve, and is suitable for popularization and application. And the production process can be controlled, and the mining stability and safety are improved.

The invention relates to the technical field of oil production engineering, in particular to a fracturing process for a tight oil horizontal well, which comprises the following steps: acquiring geological data information; determining a rock stratum state according to the pore reference value of the to-be-constructed area and the tight oil enrichment degree, and determining a target stratum setting mode according to the rock stratum state; perforation is conducted on the toe end of the horizontal well, and fracturing operation is conducted on all target layers after perforation of the toe end of the horizontal well is completed; the injection amount of CO2 fracturing fluid is determined according to the length of the reference oil-containing sandstone, and the content of a thickening agent is determined according to the reservoir pressure; if the fracture density is smaller than the preset fracture density, it is determined that the fracturing fluid adjusting mode of the rear target layer is an optimization mode determined according to the gravel particle size difference degree or adjustment is conducted according to the injection pressure of CO2 fracturing fluid according to the gravel state of the proppant; after the CO2 fracturing fluid is injected into the whole well section, the well closing time is determined according to the comprehensive reference value; and drilling and removing the bridge plug. The fracturing effect can be improved, and the exploitation efficiency of the tight oil horizontal well is improved.

The invention belongs to the field of underground mining, and relates to a method for arranging a bottom structure of a multi-layer stope arranged along the trend of an ore body, which comprises the following steps of: arranging a one-step mining rock drilling roadway, arranging a shared ore removal roadway, arranging a peach-shaped ore pillar, arranging a one-step mining cutting roadway, arranging a one-step mining inclined crossing roadway, arranging a two-step mining rock drilling roadway and arranging a two-step mining cutting roadway. According to the technical scheme, the problem that a bottom structure cannot be arranged in a two-step mining field is solved; a two-step mining field has a bottom structure, the ore removal efficiency is improved, the stoping period is shortened, ore removal is cleaner, ore loss is reduced, the opportunity of remote ore removal is reduced, and the risk that equipment is buried is reduced.

The invention relates to the technical field of underground mining methods, and provides a thin vein group step-by-step efficient continuous stoping method which is used for collecting ore bodies in an ore block, the ore block comprises at least two ore bodies, the ore bodies are vertically arranged, a stone clamping layer is arranged between every two adjacent ore bodies, and the first ore body, the stone clamping layer and the second ore body in the ore block are sequentially arranged. Comprising the following steps that S10, a first ore body is mined, and a first goaf is formed; s20, blasting the stone clamping layer part, and filling the first goaf with broken stones obtained by blasting; and S30, a second ore body is mined. By means of the technical scheme, the problems that in the prior art, the mining efficiency of the steeply-inclined thin vein group containing the multi-layer clamping stone is low, and large-scale automatic mechanical equipment is difficult to apply are solved.

The invention discloses a coal underground gasification mining front and rear furnace common well continuous coordination propulsion method which comprises the following steps: S1, constructing a gas inlet well and a gas outlet well of a first furnace, and performing gas injection fracturing on a gasification to-be-mined area of the first furnace by using the gas outlet well; s2, coal seam combustion gasification operation is conducted on the gasification to-be-mined area of the first furnace, and synthesis gas is collected through a gas outlet well of the first furnace; meanwhile, a gas outlet well of the second furnace is used for conducting gas injection fracturing on the gasification to-be-mined area of the second furnace; s3, the combustion space area of the first furnace is made to be idle for cooling, meanwhile, the second furnace conducts combustion gasification operation, and the third furnace conducts gas injection fracturing operation; each furnace is subjected to a flow process of gas injection fracturing, combustion gasification, idle cooling and CO2 storage well closing treatment; and S4, completing each flow process in sequence. The upper furnace and the lower furnace carry out difference node follow-up according to the flow process by one flow node, the upper furnace and the lower furnace carry out well sharing, the number of drilled wells is reduced, geological damage is relieved, and the mining efficiency is improved.

The invention belongs to the technical field of oil and gas well perforation, and relates to a high-speed communication method and system for single-core cable perforation. The method comprises the following steps: performing low-frequency modulation on underground perforation data; performing high-frequency modulation on underground logging data; synthesizing carrier signals; the driving power of the carrier synthesis signal is amplified, so that the carrier synthesis signal is transmitted to the ground end on the single-core cable; the ground terminal carries out carrier signal conditioning on the carrier synthesis signal and then carries out amplification processing; carrying out carrier signal separation, and respectively outputting a low-frequency modulation signal and a high-frequency modulation signal; and outputting perforation data and logging data. According to the invention, perforation signals and underground logging data can be transmitted on the single-core cable at the same time, and the exploitation efficiency of an oil-gas well is improved; according to the single-core cable perforation communication system, continuity and low delay characteristics of perforation operation signals are kept, discrete data can be selectively transmitted, the efficiency of single-core cable perforation communication is improved, and mutual influence of perforation or logging communication faults is effectively avoided.

The invention belongs to the technical field of thickened oil development, and particularly relates to a displacement exploitation method with controllable thickened oil activity. According to the displacement mining method with the controllable heavy oil activity, firstly, fracture development condition analysis is conducted on oil reservoir crude oil reserves, then different slugs are adopted for heavy oil mining according to the fracture development condition, and a water plugging agent, a composite viscosity reducer and a CO2 synergistic huff and puff mode and a CO2 response type alkyl amidine surfactant are adopted in the different slugs; the plugging agent can generate good water channeling plugging, viscosity reduction, gas channeling plugging and other effects, has good oil displacement capacity, can greatly improve the recovery efficiency, and is suitable for heavy oil recovery under harsh conditions.

The invention discloses a cellular coalbed methane exploration and development well pattern deployment method, which comprises the following steps: step 1, carrying out geological exploration and analysis, and determining the distribution, reservoir characteristics and geological conditions of coalbed methane; 2, according to occurrence characteristics and geological conditions of the coal bed gas, a honeycomb type well pattern layout is designed; step 3, accurately arranging a well position: optimizing the well position by utilizing a geographic information system and a computer simulation technology; 4, drilling operation is conducted, specifically, in the drilling process, a directional and horizontal drilling technology is adopted, and it is ensured that drilling is conducted according to the preset track and angle; 5, fracturing operation is conducted, specifically, fracturing fluid is injected into the well through a high-pressure pump, cracks are formed, and the permeability of the coal seam is improved; and step 6, carrying out production testing and monitoring. According to the method, the honeycomb structure is simulated, the mining wells are evenly distributed on the coal seam, the coal seam area can be covered to the maximum degree, comprehensive covering and efficient development of coal seam gas resources can be achieved, and the recovery rate of coal seam gas is increased.

The utility model provides a cutting pick assembly protection device, which comprises an expanding digging plate, a screw and a screw hole, the screw hole is arranged on the side wall of a high-position end cover ring, and the expanding digging plate is fixed on the high-position end cover ring by installing the screw in the screw hole. And a wear-resistant welding layer is arranged on the peripheral surface of the expanding digging plate. The expanding excavation plate is convenient to mount and easy to dismount, and the cutting teeth are protected. The wear-resistant welding layer is arranged on the outer surface of the expanding excavation plate, so that the contact area between the expanding excavation plate and the coal seam is increased, the expanding excavation plate participates in the rock breaking process of the coal wall, the expanding excavation performance of the end disc is improved, and the mining efficiency is improved.

The invention discloses a coal underground combustion gasification and carbon dioxide sequestration mining treatment method. The method comprises the steps that S1, gas injection fracturing is conducted, specifically, fracturing gas is introduced through a gas outlet well to enable a coal seam corresponding to a gasification to-be-mined area to form a fracturing seam net; s2, combustion gasification: taking the bottom end of a gas inlet shaft of the furnace to mountain gas and the bottom end as a mining direction, discharging gas from the furnace, and discharging synthesis gas; and S3, sealing and closing the well: injecting carbon dioxide serving as displacement gas into the space to be sealed through the gas inlet well, collecting mixed gas through the gas outlet well, and then injecting high-pressure CO2 gas into the space to be sealed for sealing treatment. According to gas injection fracturing of a single furnace, a horizontal fracturing gas injection channel is adopted for carrying out gas injection fracturing treatment on the gasification to-be-mined area of the furnace located above to form a fracturing crack net, the upper furnace well and the lower furnace well can be jointly subjected to difference node follow-up according to the flow process and the difference of one flow node, and the sealing difficulty of the well and a combustion space area is reduced; and the mining efficiency is improved.

The invention relates to a natural gas hydrate generation inhibitor for deepwater shaft working fluid as well as a preparation method and application thereof. The natural gas hydrate inhibitor SYZ-3 provided by the invention is synthesized by taking a monomer containing a cyclic functional group and a monomer containing a chain functional group as raw materials, azodiisobutyronitrile as a free radical polymerization reaction initiator and dimethylformamide as a free radical polymerization reaction solvent through free radical polymerization reaction. The natural gas hydrate inhibitor SYZ-3 provided by the invention can effectively inhibit secondary generation of hydrates in a shaft, and also can reduce the requirements of a sea area natural gas hydrate drilling fluid system on salt and alcohol thermodynamic inhibitors, so that the drilling fluid performance is guaranteed, the shaft is prevented from being blocked, the well control risk is reduced, and the hydrate exploitation safety is guaranteed; the mining work efficiency is improved, and the method has important significance on construction of a sea area natural gas hydrate low-density strong-inhibition drilling fluid system.

The partition wall is arranged in the middle of each stoping unit in the width direction of the goaf and comprises a plurality of spliced wallboards, each wallboard comprises a solid pressure-resistant plate, a fixed net rack and a movable net rack, the fixed net rack is connected to the thickness side of the solid pressure-resistant plate, and the movable net rack is connected to the thickness side of the solid pressure-resistant plate. One side of the movable net rack in the height direction is rotatably connected with the fixed net rack; the fixed net rack is a double-layer steel bar net rack, and the inner-layer steel bar net is provided with connecting steel bars used for being connected with the solid pressure-resistant plate; the fixing net racks of the adjacent wallboards are assembled in an inserted mode, a horizontal sleeve is welded to the corresponding assembling side of the fixing net rack of one wallboard, and a horizontal inserting rod is welded to the corresponding assembling side of the fixing net rack of the other wallboard. Each goaf is divided into two independent parts including a replacement area and a receiving area by the partition wall, so that the receiving area of each goaf is reserved as a free space for blasting and ore breaking of a subsequent stoping unit, direct contact between blasting operation and a filling body can be cut off, damage of blasting impact to the filling body is reduced to the maximum extent, and the service life of the filling body is prolonged. And the situation that mining of the follow-up stoping unit is delayed by filling and consolidation is avoided, and the overall mining efficiency is greatly improved.

The utility model discloses a combustible ice exploiting device based on a coiled tubing, which comprises a coiled tubing assembly and a combustible ice exploiting assembly, the combustible ice exploiting assembly is arranged at the lower end of the coiled tubing assembly, and the combustible ice exploiting assembly can move to an underground combustible ice exploiting well section along with the movement of the coiled tubing assembly. A mining monitoring assembly, a hydraulic control pipeline and a power supply control cable are arranged on the outer side wall of the coiled tubing assembly; according to the continuous oil pipe, the function of rapidly and stably exploiting combustible ice is achieved, the exploiting time and the exploiting speed can be remotely and accurately controlled on the ground in the whole exploiting process, and the function of measuring a DAS signal, a DTS signal and a DPS signal on the inner side and the outer side of the continuous oil pipe body in real time in the exploiting process of the combustible ice is achieved; the operation safety of the device in the whole combustible ice exploiting process is guaranteed, the exploiting accuracy and exploiting efficiency of the combustible ice are improved, and the device is simple in structure, high in practicability and suitable for being widely popularized and used.

The invention relates to the technical field of oil exploitation, and discloses an automatic pressurizing device for oil exploitation equipment, the automatic pressurizing device comprises a mounting plate, an oil pumping pipe is arranged on the mounting plate, the oil pumping pipe fixedly penetrates through the top of the mounting plate, one side of the oil pumping pipe is communicated with an oil pumping branch pipe, and an oil pumping pump is fixedly mounted on the mounting plate. Petroleum can be pressurized by arranging the pressurizing pipe, the box body, the inner frame, the gas pump and the gas pipe, so that petroleum exploitation is more stable, atmosphere pumped by the gas pump can be filtered by arranging the water inlet pipe and the filter water, impurities in the atmosphere are removed, gas pressurization is more stable, and the petroleum exploitation efficiency is improved. The mineralization degree of petroleum can be detected by arranging the mineralization degree tester, water injection and pressurization can be conducted on the petroleum by arranging the water pipe, the limiting rod, the spring and the partition plate, meanwhile, the petroleum with the high mineralization degree can be diluted, the fluidity of the petroleum is improved, and therefore the petroleum exploitation efficiency is higher.

The invention provides a separate collection and separate control technology for horizontal subsection combined mining of coal and gangue in a steeply inclined short-distance coal group. Comprising the following steps: step 1, determining a section height H and a mining and releasing ratio n: 8.25 m < = H < = 15m, and 1: 5 < = n < = 1: 2.3; step 2, top coal separate caving control under the side wall effect: (1) increasing the inclination angle of a working face, and (2) optimizing a coal caving mode; and step 3, controlling collapse of the dirt band layer under the action of asymmetric dynamic constraint: (1) presplitting the dirt band layer and top coal, and (2) designing a coal caving sequence. According to the steeply-inclined short-distance coal group horizontal section combined mining coal gangue separate collection and separate control technology provided by the invention, through the three steps from the working face dimension and the trend dimension, the roadway tunneling rate of the working face is reduced, the moving times of the working face are reduced, the top coal caving side wall effect is inhibited, the resource mining rate is increased, and the working efficiency is improved. Invalid transportation and lifting of a large amount of gangues are reduced, and green, safe and efficient mining can be achieved.

The invention discloses a deep-sea mining plume inhibition technology using an AUV (Autonomous Underwater Vehicle) to add a flocculating agent, which comprises a mine car, a solution mixing container is arranged in the mine car, a stirrer is arranged on the solution mixing container, a second flow pump is arranged on the left side of the solution mixing container, and one end of the second flow pump is connected with the solution mixing container through a conveying pipeline; the other end of the solution mixing container is connected with a water pumping pipeline through a conveying pipeline; a jet flow pump is arranged on the left side of the solution mixing container; a flocculating agent is accurately added through the AUV, aggregation and sedimentation of suspended particulate matter are promoted, formation and diffusion of plume are effectively inhibited, pollution of deep-sea mining to the marine environment is reduced, the AUV can conduct autonomous navigation and control operation underwater, the system can adapt to the complex deep-sea environment, and the service life of the system is prolonged. The application scene of the technology is wide, the flocculant can be used for reducing plume generation, the drag reducer can also be used for reducing water jet resistance, and the mining efficiency is improved.

The invention provides an off-vein single-draw-shaft inclined mining combined low-waste efficient mining method, and relates to the technical field of mining. The mining method is based on stope construction of three stages, the stoping work of each layer access in each stage is realized by respectively constructing a first stope layer-changing connection gateway, a second stope layer-changing connection gateway and a third stope layer-changing connection gateway, and the stope construction of the second stage and the stope construction of the third stage are circularly carried out. Therefore, the draw shaft is directly connected with the stope through the stope layer-changing connection way, a segmented outside-vein roadway and a panel slope ramp do not need to be constructed, a large amount of accurate mining work amount and construction time can be saved, and the defects that in an upward drift filling mining method, the accurate mining work amount is large, and a large amount of segmented outside-vein roadways, panel slope ramps and other projects need to be constructed are effectively overcome; and the preparation time before ore block stoping is long, and after construction of the segmented outside-vein roadway is completed, a layer-changing connection roadway needs to be constructed from the segmented outside-vein roadway to the footwall of the ore body to cut the ore blocks, and then an access road can be constructed for mining operation.

The invention relates to the field of open-pit coal mine mining, in particular to an open-pit coal mine full-continuous coal mining layered mining system which comprises an excavating unit, a coal mining unit, a coal mining unit, a coal mining unit, a coal mining unit, a coal mining unit and a monitoring unit, and the excavating unit is used for carrying out continuous layered excavating operation on a coal seam of an open-pit coal mine; the crushing unit is used for screening and crushing excavated coal briquettes and ores and comprises a mounting frame, a shell is mounted on the mounting frame, a filtering cavity, a crushing cavity and a deposition cavity are sequentially formed in the shell from top to bottom, a feeding port and a discharging port are formed in the side walls of the two sides of the filtering cavity respectively, and a power assembly is mounted at the bottom of the deposition cavity; a crushing assembly is mounted in the crushing cavity, and the power assembly is used for providing driving force for the crushing assembly; the system further comprises a transfer unit, a transportation unit and a control unit used for monitoring the operation state of each unit. A plurality of functional units such as excavating, screening, crushing, transferring, transporting and intelligent monitoring are integrated, and an efficient, automatic and intelligent mining system is formed.

The invention discloses a stope ore breaking method for combined blasting of presplitting blast holes and downward fan-shaped blast holes. The method comprises the step that an ore body to be mined is divided into stopes of two steps according to the mining sequence. A stope connecting roadway, a rock drilling roadway and an ore removal roadway are constructed in the two stopes respectively, and a long anchor cable and anchor rod supporting system is adopted for providing pre-supporting. A cutting transverse roadway and an undercutting transverse roadway are constructed in a rock drilling roadway of a stope in the first step, a first cutting groove is formed through blasting, and a necessary free face and a compensation space are provided for subsequent downward fan-shaped blast hole blasting. Downward fan-shaped blast holes and presplitting blast holes are constructed in the rock drilling roadway of the first-step stope, and meanwhile only the presplitting blast holes are constructed in the rock drilling roadway of the second-step stope. And the downward fan-shaped blast holes and the presplitting blast holes of the stope in the first step are filled with explosives, and blasting is conducted in sequence. And after blasting is completed, gas flowing through the ore removal roadway is used for cleaning the stope so as to discharge foul gas, then residual ore is removed, and the goaf is filled.

The invention discloses a fully-mechanized caving filling mining method for a high-gas thick coal seam, and relates to the field of coal seam mining, a gas extraction filling roadway arranged in an overlying rock stratum is adopted to perform gas extraction and filling at the same time, and one-hole multi-purpose drilling is achieved, that is, a hole is drilled in an advanced working face to extract gas, and the gas extraction and filling are performed at the same time. And parallel operations of filling and mining are realized in a drilling and filling manner behind the working face, so that the mining efficiency is improved, and the problem that the mining efficiency is restricted by filling is solved. The gas is extracted through the drill hole, so that the gas concentration of the working face is reduced. Grouting and filling are conducted from top to bottom through the drilled holes, the filling efficiency is improved, and the problem that a traditional filling support is insufficient in height is solved; meanwhile, after the filling slurry is injected into the goaf, a filling body can be formed, namely, an integral supporting structure can be formed, roof contact can be achieved, the bearing performance is high, ground surface subsidence is controlled, and the problem of large-scale subsidence caused by fully mechanized caving mining is solved.

The invention discloses a multi-thin ore body multi-mining-area mining structure and a continuous mining method. The multi-thin ore body multi-mining-area mining structure comprises a slope ramp, a segmented haulage roadway, an air return raise, filling slurry, an unmined ore body, a mining area, a filling retaining wall, a connecting channel and a staged haulage roadway. According to occurrence conditions of the ore body, the ore body is divided into a plurality of subsections in a stage, then the subsections are divided into a plurality of layers, the multiple ore bodies are divided into a plurality of mining areas in the layers in the trend of the ore body, stoping work of all the mining areas is propelled at the same time, and the working procedures of rock drilling, explosive charging, ore removal, filling and the like are sequentially carried out in the mining areas. On the basis of the collaborative mining principle, multi-section parallel operation is implemented in the stages, continuous stoping is conducted on a plurality of mining areas in all sections, the thin ore body group multi-section multi-mining-area collaborative continuous mining technology is achieved, the stoping period is greatly shortened, the mine production capacity and the stoping efficiency can be effectively improved, and safe and orderly connection during collaborative mining of the multiple mining areas is ensured.

The utility model discloses a lotus root harvesting all-in-one machine which comprises a machine body frame used for enabling the lotus root harvesting all-in-one machine to float on the water surface; the advancing device is arranged on the machine body frame and used for enabling the machine body frame to advance on the water surface; the collecting device is arranged on the machine body frame; the digging device comprises a rack, a lifting mechanism, a supporting frame, bearing seats, supporting optical shafts, a supporting seat, a high-pressure water gun and a power system, the rack is arranged on the machine body frame, the lifting mechanism is arranged on the rack, the supporting frame is arranged on the lifting mechanism, the two bearing seats which are oppositely arranged are arranged on the supporting frame, and the supporting optical shafts are arranged in the two bearing seats in a sleeved mode. A supporting seat is arranged on the supporting optical shaft, a high-pressure water gun is arranged on the supporting seat, the supporting optical shaft is connected with a rotary driving mechanism, the power system comprises a water suction pump, and the water suction pump is connected with the high-pressure water gun through a water outlet pipeline. Harvesting efficiency is remarkably improved through lifting and rotating design of the high-pressure water gun, working breadth is increased, and meanwhile high-pressure water jet is further attached to the surfaces of the lotus roots to scour the lotus roots.

The invention relates to the technical field of ocean engineering deep-sea mining equipment, in particular to a multi-metal nodule desliming device suitable for deep-sea mining, which consists of a mineral aggregate input connecting flange, a mineral aggregate input transition cabin, a mineral aggregate enrichment cabin, a waste discharge cabin, a desliming screen, a screen fixing frame, a screen fixing screw and a waste discharge guide plate. The mineral aggregate input connecting flange is located at the front end of the multi-metal nodule desliming device and used for being connected with the multi-metal nodule collecting and conveying device, the mineral aggregate input transition cabin is tightly connected with the mineral aggregate input connecting flange, and a square opening is formed in the rear end of the mineral aggregate input transition cabin. The shape of the front end of the mineral aggregate input transition cabin is the same as that of the mineral aggregate input connecting flange.

The present invention discloses an optimization method and system for geothermal resource exploitation schemes, and relates to the technical field of geothermal resource exploitation. The optimization method comprises: obtaining original data: conducting geological surveys on the target area, obtaining geological data and geothermal resource data of the geothermal area, and using the geological data and geothermal resource data as original data. The present invention divides the target area into several No. 1 areas, evaluates and optimizes the scheme using simulation calculations, and adjusts the layout of the exploitation wells and the reinjection wells and the equipment parameters to achieve a more efficient exploitation effect or a lower cost. Although the calculation accuracy is reduced by dividing the area for calculation, it is a simulation calculation itself, so that the results of the simulation calculation can be effectively referenced, and at the same time, it provides convenience for the calculation of subsequent optimization schemes, and reduces the possibility of calculation errors.