6109results about How to "Reduce economic costs" patented technology

The invention discloses an optimizing and dispatching method for microgrid economical operation on the basis of multiple time scale coordination, comprising the following steps: dividing microgrid economical operation into two time scales, namely a dayahead plan and real-time dispatching; in the dayahead plan, dividing one dispatching period into a plurality of time intervals, and modelling into a mixed integer linear programming program based on the dayahead prediction data; and during the real-time dispatching period, complying with the startup and halt result of the dayahead plan, and modelling into a nonlinear plan based on real-time ultra-short term prediction data. In the optimizing and dispatching method, the coordinated mechanism of two time scales is designed, the dispatching scheme obtained with the method not only can satisfy the economic factors of a long time scale but also can satisfy safe operation constraints, such as the inner microgrid voltage, carrying capacity and the like of short time scales, and the capacity fluctuation of new energy is smoothened. The method is suitable for optimizing and dispatching economical operation in the parallel and single network operation of a micro power grid composed of a controllable power supply, an uncontrolled power supply and energy storage equipment of any type and any volume proportion.

The embodiment of the invention discloses a processing method and a system for risk monitoring and controlling of the transaction data. The method comprises the following steps: receiving the transaction data generated in the business processing information; calling the related transaction data of the transaction data according to the transaction data; calculating the risk monitoring index data threshold value according to the transaction data and the related transaction data; judging that the business processing information generating the transaction data is quasi-risk business processing information when the transaction data is more than the risk monitoring index data threshold value; and setting the quasi-risk business processing information into the risk business processing information. The method and the system of the invention can automatically generate a risk control threshold value, identifies and controls the risk according to the different conditions, can provide a risk monitoring process flow and a rule improvement mechanism, thus saving the economic cost, improving the accuracy and the efficiency of the risk event checking, and greatly improving the monitoring efficiency and effect of the banking business risks.

The invention discloses a building method of a digital copyright tracing system based on a block chain and a cloud platform. The method comprises the following steps: designing a general framework of the digital copyright tracing system based on the block chain and the cloud platform; building a block chain consensus mechanism, wherein nodes in the block chain reach a consistent consensus on the aspects of node reliability and data real-time performance; designing a digital content storage way based on the block chain and the cloud platform, wherein the block chain stores a Hash function value formed after dimension reducing processing of digital content, and the cloud platform saves digital content on which a digital content producer performs a digital signature with a private key; building a digital content transaction platform based on the block chain to perform a registration transaction and an authentication transaction of the digital content; and building a digital content copyright tracing model, and performing tracing by using a chain-style relation of a Hash chain in the block chain. Through adoption of the method, safe and effective propagation of digital products can be realized, and the problem that digital content copyrights cannot be traced is solved.

The invention discloses an ARM (advanced RISC (reduced instruction set computer) machines) and FPGA (field-programmable gate array) based navigation and autonomous flight control system for an unmanned helicopter. The system comprises a PC (personal computer), an integrated navigation subsystem, a power supply module and controllers, wherein the integrated navigation subsystem comprises a sensor group; the sensor group comprises a GPS (global positioning system), a gyroscope, an accelerometer, a magnetoresistive sensor, a barometric altimeter and a sonar altimeter; the controllers include a main controller and a steering engine controller; the main controller adopts an ARM microprocessor to operate the integrated navigation algorithm and flight control PID (proportion integration differentiation) algorithm and simultaneously completes data acquisition of the GPS, the barometric altimeter and the sonar altimeter; and the steering engine controller adopts an FPGA to realize data acquisition of the gyroscope, the accelerometer and the magnetoresistive sensor and transfers the data to the main controller via a concurrent bus to carry out attitude calculation and control operation on the unmanned helicopter. With the unmanned helicopter as a carrier, the hardware environment of a whole set of flight control system integrating study of the aircraft navigation and control theory problem, data acquisition, information transfer and embedded control is set up.

The invention discloses a low-temperature SCR catalyst which takes nitrogen mingled with active carbon as a carrier. The catalyst takes the nitrogen mingled with active carbon prepared by ammonia gas ignition as the carrier and one of the oxides loaded with metallic element of Mn, V, Fe, Co or Cu as an active ingredient. The invention also discloses a specific method for preparing the catalyst. The carrier of nitrogen mingled with active carbon increases the number of base sites on the surface of the active carbon, so as to improve the adsorptive capacity of NO and O2 and lead more NO to be oxidized into NO2. The load of the metal metallic oxides of Mn, V, Fe, Co and Cu forms a large amount of acid sites on the surface of the catalyst, which promotes the absorption capability of the catalyst to NH3. The measures effectively enhances the denitration activity of the low-temperature SCR catalyst which takes the nitrogen mingled with active carbon as the carrier and extends the activity temperature window of the reaction thereof.

The invention discloses an SAS hard disk and NVMe hard disk compatible hard disk backplane, and relates to the field of server hard disk backplanes. The integral structure of the hard disk backplane is a PCB board card on which a plurality of hard disk connectors and a CPLD are arranged, the hard disk connectors are SAS hard disk and NVMe hard disk compatible connectors, and are connected to the CPLD; and the CPLD can be used for automatically recognizing the types of connected hard disks, and is in communication with a BMC management module on a server mainboard through an I2C bus. According to the SAS hard disk and NVMe hard disk compatible hard disk backplane, an SAS hard disk and an NVMe hard disk use a same onboard connector and are compatible, so that the online change of the two hard disks is realized, the operation convenience is improved and the board card development cost is reduced; the management, carried out by the BMC management module, on the hard disk operation states and health conditions is realized; and by using different combinations of LED lamps, the current hard disk states are shown, so that convenience and visualization are provided.

A method for transmitting Ethernet data in a Digital Unit (DU) that processes a baseband and interfaces with at least two Radio Frequency (RF) Units (RUs) is provided. The method includes setting location information of two or more Ethernet channels in a first subchannel of a radio frame, allocating the two or more Ethernet channels in second subchannels of the radio frame, using the location information, and transmitting the radio frame to the at least two RUs.

The invention discloses a fault reconstruction method for a simple redundancy flight control system of a long-endurance unmanned aerial vehicle. The redundancy is formed for the measurement of key navigation information by using two devices of main and backup sensors on the basis of the non-similarity principle, and two redundancies are guaranteed on an execution mechanism, so that the simple redundancy flight control system is formed. A comparison is made between information of the main sensor and the information of the backup sensor; when the times of the deviation of the information of the main and backup sensors greater than the threshold in unit time are more frequency, one sensor is broken down; the fusion is implemented through other normal navigation information for locating the broken device; and when one execution mechanism is broken down, the influence of the broken mechanism is complemented through the rest normal execution mechanisms to guarantee the flight safety.

The invention belongs to the field of water supply pipe network leakage management systems, in particular to a water supply pipe network leakage management system and an establishment method and system application thereof. In the prior art, through DMA (District Metering Area) zone metering, the independent metering and management of a complex pipe network is realized, and common DMA zone meteringhas the problems of high hardware investment, insufficient hardware laying reasonability, extensive leakage management, shortage of leakage economic evaluation system, imperfect data releasing and sharing mechanism. The water supply pipe network leakage management system comprises a pipe network hydraulic model subsystem, an SCADA (Supervisory Control And Data Acquisition) subsystem, a DMA management subsystem, a leakage management subsystem and a water affairs GIS (Geographic Information System) management subsystem. Through the guidance of basic data, an optimal hydraulic model is established, independent metering zone division is guided through the hydraulic model, pipe network hardware laying is guided, the economic benefit of a laying scheme is accurately evaluated, leakage management is reasonably carried out, and multiple pieces of system data can be shared.

The invention provides a nitrogenous nickel-free stainless steel and a powder-metallurgical molding technology, relating to the field of stainless steel production. Nitrogenous stainless steel powder and a prepared cementing agent are mixed evenly in a mixing machine and then crashed to injection molding feedstock; injection molding blanks with smooth surfaces and without macro defects are obtained by an injection molder under appropriate injection temperature and injection pressure; after degreasing by chlorylene solvent, thermal degreasing and presintering are carried out to the injection molding blanks, thermal degreasing blanks with certain strength and without defects are obtained; the thermal degreasing blanks are sintered and densified in nitrogen based atmosphere, therefore, products with higher density and more excellent performance can be obtained. The nitrogenous nickel-free stainless steel of the invention can solve the problems that resource price of the nickel-contained stainless steel is expensive and the contained nickel thereof is harmful to human health and the like, extends the application scope of nitrogenous austenitic stainless steel. The materials prepared by using the nitrogenous nickel-free stainless steel of the invention are better than traditionally smelted austenitic stainless steel in terms of performance and the nitrogenous nickel-free stainless steel of the invention is resource saving and environmentally friendly.

The invention relates to a rapid construction method of a conditional gene knockout animal model, which is implemented by using a CRISPR / Cas9 technology. The specific method can be implemented as follows: designing a gRNA target spot sequence, for a to-be-knocked-out gene of an animal, of a CRISPR / Cas9 system, designing a corresponding promoter, constructing a plasmid, thereby implementing conditional gene knockout. According to the invention, the rapid, efficient, simple, feasible, economic, efficient, and wide-applicable-scope construction of a conditional gene knockout animal model can be realized, and the defects existing in traditional methods (specific recombination enzyme system Cre-LoxP) can be overcome.

The invention discloses a video image processing-based fire detection system and detection method. A video acquisition module, a fire detection module, a fire analysis module, a fire judgment module and a fire alarm module are connected with one another so as to form the video image processing-based fire detection system; the video acquisition module acquires video images in the coverage area of a camera; the fire detection module performs background modeling and background updating on the video image and detects a foreground moving object; the fire analysis module analyzes the video images to identify a suspected flame region and extracts static characteristics and dynamic characteristics of the suspected flames; the fire judgment module adopts the static characteristics and dynamic characteristics of the suspected flames extracted by the fire analysis module as the input of a BP neural network so as to judge whether flames exist in a video; and the fire alarm module judges whether to give an alarm according to the output result of the fire judgment module. With an existing monitoring system used in combination, the video image processing-based fire detection system can decrease detection cost and greatly reduce a false alarm rate with fire detection accuracy ensured.

The invention relates to the technical field of fruit growing and in particular relates to a growth regulator for improving the fruit setting rate of peaches and a regulating method. The growth regulator comprises the following components of gibberellin and auxin, wherein the auxin may be one of 1-Naphthalene acetic acid, sodium alpha-naphthyl acetate, indoleacetic acid, phenylacetic acid, indolebutyric acid, indoleacetic acid and 2,4-dichlorphenoxyacetic acid, and the growth regulator is sprayed after the peaches bloom. The growth regulator provided by the invention is easy to obtain and prepare and low in economic cost, and can effectively remedy deficiency of endogenous hormone caused by poor fertilization of peaches; the method for applying the growth regulator provided by the invention is simple and convenient and easy to operate and control, effectively solves the problem that in the growing of peaches, the fruit setting rate is influenced by abnormal weather in a flowering phase, shriveled flower buds, overly rapid warming and the like, improves the fruit setting rate by more than 34 times, and is obvious in effect and applicable to popularization and application in the production of peaches in common peach orchards, green houses and other facilities.

A method for forming a structure that includes a layer that is removed from a donor wafer that has a first layer made of a semiconductor material containing germanium. The method includes the steps of forming a weakness zone in the thickness of the first layer; bonding the donor wafer to a host wafer; and supplying energy so as to weaken the donor wafer at the level of the zone of weakness. The zone of weakness is formed by subjecting the donor wafer to a co-implantation of at least two different atomic species, while the bonding is carried out by performing a thermal treatment at a temperature between 300° C. and 400° C. for a duration of from 30 minutes to four hours.

Disclosed is a resettable roll-in type swinging seismic-isolation pier stud with flanges. The resettable roll-in swinging seismic-isolation pier stud is of a resettable seismic-isolation structure. The seismic-isolation pier stud comprises a main beam, piers, bearing platforms, semi-protruding spherical pier bottoms, pier flanges, rubber spacers, hollowed semispherical bearing platform tops, shape memory alloy shear bolts and oblique-section stoppers. The fixed connection of the piers and the bearing platforms is changed into swingable hinge connection. The spherical pier bottoms of the piers are embedded in the hollowed hemispheres of the bearing platform tops. The pier flanges are arranged on two sides of the upper portions of the spherical pier bottoms and are in anchorage connection with the bearing platforms via the shape memory alloy shear bolts. The rubber spacers are arranged between the semi-protruding spherical pier bottoms and the hollowed semispherical tops and between the bearing platforms and the pier flanges as well as between the sides of the pier flanges and the bearing platform stoppers. The pier stud is separated from the foundation, and seismic energy can be filtered by swinging, so that the piers and the foundation are protected. The resettable roll-in type swinging seismic-isolation pier stud has excellent social and economic benefits and worthy of popularization and application.

The invention discloses a method for economically and optimally dispatching cogeneration units. The method includes S1, determining safe and adjustable peak-load regulation ranges of the cogeneration units; S2, constructing mathematical model for unit load optimization under the consideration of electric load adjustment moments and creating multi-objective and multi-constraint unit load optimization objective functions; S3, designing a cogeneration unit multi-objective and multi-constraint load optimal dispatching scheme on the basis of a non-dominated sorting genetic algorithm (NSGA-II). The multi-objective and multi-constraint method for optimally dispatching the cogeneration units has the advantages that power generation load and heating load among the various units of an integral plant can be reasonably distributed in real time on the premise that safe, economical and environment-friendly running of the units is guaranteed, standard total coal consumption and pollutant emission of the integral plant are reduced to the greatest extent, power grid load adjustment can be quickly responded, the load competitiveness of each unit is improved, the integral plant can run at a low comprehensive economical cost, and the overall efficiency of the units is improved.

The present invention provides a method for production of heavy oil reservoir. It is technically characterized by that in the cyclic steam injection and steam-flooding process it utilizes air injection to raise recovery efficiency and engineering benefits. Said method includes the following steps: after the oil well is drilled, making casing sand control completion of heavy oil reservoir so as to inhibit sand inflow in after-production; constructing artificial bottom hole so as to resist high-pressure produced by injecting steam and high-pressure air; after well completion injecting hot steam (above 200 deg.C), and injecting air into same oil reservoir, reducing heavy oil viscosity, then closing well, making crude oil and oxygen gas produce oxidation reaction; after the wellhead pressure is stabilized, opening well and making production.

The invention discloses a reactive-power control method of a wind power field, which is suitable for performing reactive-power coordinated control on a wind power field variable-speed constant-frequency wind power generating set and a reactive-power compensation device. The control method comprises the steps that: reactive-power requirements of the wind power field are calculated, and a correspondent allocation method is adopted according to the valid reactive-power power capacities of the reactive-power compensation device and the wind power generating set. Due to the adoption of the controlmethod, the reactive-power power adjusting capacity of the variable-speed constant-frequency wind power generating set can be adequately played, the coordinated control of multiple reactive power sources can be realized, and the oscillation situation caused by the adjustment can be avoided. When an electric power system has malfunctions, the reactive power adjustment is locked, so the system over-voltage caused by the excessive reactive power of the system after the malfunction is removed can be prevented. When the reactive power capacity of the wind power field is insufficient to maintain the voltage of an interconnected point, a prompting signal is transmitted, the active power of the wind power field is limited, and the coordination of the active power and the reactive power can be realized.

The present invention provides a measuring device and a method of dynamic real-time measurement of position and posture of a pipe pushing jack, wherein the method comprises the steps of setting a total station and a rear view prism inside a starting shaft to obtain laser target coordinates by the total station and obtain the pipe pushing jack coordinates by the laser target coordinates, an azimuth angle, a rolling angle, and a pitch angle; installing a forward-looking prism on the pipe joint to obtain a tunnel path line; moving the total station onto the pipe joint to back calculate the real-time coordinates of the total station by the path line, and measure the position and posture of the pipe pushing jack real timely; moving the rear view prism onto the pipe joint to back calculate the real-time coordinates of the rear view prism by the path line, and measure the position and posture of the pipe pushing jack real timely. The device comprises a laser target located on the pipe pushing jack; a forward-looking prism installed on the pipe joint inside the tunnel; a forward-looking prism, a total station, and a rear view prism placed in order behind the laser target; and a controller connected with the laser target. The present invention is able to solve problems of uneasy measurement of the position coordinates caused by dynamic changes with the pipe joint moving to the pipe pushing jack.

A method is disclosed for evaluating and predicting a shale oil enrichment area of a fault lacustrine basin, comprising: obtaining materials and key data; determining a source-reservoir configuration relationship according to a longitudinal superposition relationship of different types of rock in a lithology profile and establishing a single-well lithofacies model; in the single-well lithofacies model, using a dolomite-to-formation ratio and a TOC average value to form a dolomite-to-formation ratio contour map and a TOC contour map, and superposing the dolomite-to-formation ratio contour map, the TOC contour map and a source-reservoir configuration relationship plane distribution map to form a lithofacies plane distribution map; on the basis of the lithofacies plane distribution map, superposing a vitrinite reflectance contour map and a dolomite thickness contour map to obtain a corresponding evaluation and prediction map of the shale oil enrichment area of the fault lacustrine basin.

The invention discloses a peak-time avoiding parking method based on a cloud service platform. The method is used for improving the utilization rate of urban parking spaces and then alleviating the problems that the parking spaces are insufficient and it is difficult to park at present. Based on mastered comprehensive information of urban parking spaces, parking space resources can be reasonably distributed to car owners having the parking demands in time through the method. A peak-time avoiding parking management system based on the cloud service platform comprises a cloud service platform subsystem, a parking space information collection subsystem, a parking space information issuing subsystem and a parking charging subsystem.

The invention discloses nitrogen doped graphene with a regular morphology and a preparation method thereof. The nitrogen doped graphene is prepared by adopting a chemical vapor deposition method. The preparation method comprises the following steps of: placing a metal catalyst into a reactor; heating in the non-oxidizing atmosphere to ensure the temperature of the catalyst rises to 200 to 600 DEG C; and then filling carbon and nitrogen sources into the reactor to perform the reaction to obtain the nitrogen doped graphene. The nitrogen doped graphene prepared by the invention is regular nitrogen doped graphene with a quadrangular structure. The layer number of the nitrogen doped graphene can be 1 to 10. The nitrogen doped graphene not only can be of a polycrystal structure, but also can be of a single crystal structure. The method for preparing the nitrogen doped graphene with the regular morphology, which is provided by the invention, has simple process and low economic cost and is environmental-friendly. The nitrogen doped graphene with the regular morphology can be produced in a large scale.

The invention discloses a specific performance based consistency control method for multiple intelligent agents. The control method comprises that the intelligent agents as communication nodes establish a communication topology; neighbor node and self state information is obtained according to the communication topology; the state information includes the position and speed; a tracking error of aleader is calculated according to the state information; the specific performance of the tracking error is transformed via a design performance function, and a transformed error model is obtained; andaccording to the transformed error model, an event triggering adaptive controller of a follower is designed via a backstepping method and a dynamic surface technology, an event triggering mechanism is designed, and specific performance based consistency control for the intelligent agents is realized. A system can obtain expected transient performance and stable error in the control process rapidly and precisely, the communication cost among the intelligent agents can be reduced, the application range is wide, and the application value is high.

This invention relates to a non-destructive precise determination method for biophysical parameters of cotton. To the feature and growth characteristic of cotton, selecting SAVI2 and RVI (precision more than 80%) with high precision for LAI and CCD measurement on middle and final period; finding out a optimal wave band combination for NDVI as 705nm (wave width 20nm) and 780nm (wave width 40nm); and presents an empirical regression equation as Y=0.5287*R780 -0.202*R705+2.4575 for LAI measurement by high-spectrum reflection rate. Compared with prior art, this invention has precision more than 81.8% with simple process and no damage.

The invention discloses an additive manufacturing method for an electrical contact made of a copper-tungsten functionally gradient material. According to the method, by controlling the powder feeding speed of copper powder and the powder feeding speed of tungsten powder, the copper powder and the tungsten powder are mixed evenly and distributed through a powder distributor, a high-energy beam is used as a heat source, the mass fraction of tungsten molten and deposited on a copper substrate is increased as the number of formation layers is increased, and the electrical contact made of the copper-tungsten functionally gradient material changes gradiently. The tungsten content in the copper-tungsten functionally gradient material changes gradiently in a quasi-continuous or stepped mode along with the formation height. Through the method, the high-voltage breaking capacity of an electrical contact part is improved, and the service life of the electrical contact part is prolonged.

The invention relates to a rapid bridge detection method, which belongs to the technical field of civil engineering application. Firstly, a loading test vehicle with known axle load and wheelbase is adopted for loading to measure response of a test point; then, a method of adopting a specific function (piecewise polynomial and sine wave stacking) to fit the dynamic response of the test point is adopted to extract influence line information of the bridge; a tire-pavement stress distribution emprical formula is introduced to build a tire-pavement contact force trapezoid distribution model; in combination of the actual influence line information and the vehicle tire-pavement contact force distribution model, a linear superposition method is adopted to reconstruct bridge test point response information under different vehicle load combination effects, and thus, rapid bridge detection based on the influence lines is realized. Based on few driving tests on a single vehicle, the actual influence line information can be acquired rapidly and accurately, the bridge response information under different static load combination working conditions is reconstructed, rapid bridge detection is achieved, and the defects that the existing bridge detection method is long in consumed time, high in economic cost and long in traffic block time can be solved.

The invention relates to a cement grinding aid, in particular to a cement grinding aid and a preparation method thereof. The cement grinding aid is prepared from, by weight, 13-18 parts of polymeric polylol, 8-12 parts of tri-isopropanolamine, 12-15 parts of polyol ether, 15-20 parts of ethanediol, 25-30 parts of triethanolamine, 15-18 parts of molasses, 13-15 parts of lignin, 0.03-0.06 part of sodium chloride, 0.5-1 part of silane coupling agents and 40-45 parts of water. By means of the obtained cement grinding aid, in the cement production process, the phenomena of clinker fine particle aggregation and ball pasting can be effectively improved, mobility of clinker particles is enhanced, thereby the pulverization effect of grinding media in a grinding machine for materials is enhanced, grinding efficiency can be improved by 15-20%, the cement machine-hour yield is increased, electricity consumption is greatly lowered, production cost is lowered, in addition, strength of cement at different ages can be remarkably improved, and flowability of the cement is improved.

The invention discloses and provides a tidal current power generation device which comprises a horizontal impeller, a vertical impeller, a first magnetic coupling coupler, a second magnetic coupling coupler, a first gear speed increasing box, a second gear speed increasing box, a first generator, a second generator, a gear tumbler, a sealed cabin, a speed-limit control mechanism and an energy storage device. The tidal current power generation device has the advantages of combining horizontal shaft tidal current power generation with vertical shaft tidal current power generation, being good in self-starting performance, adapting to directional changes of incoming flow, being high in power generation efficiency, beneficial to the design, debugging and maintenance of an electrical control system due to an integral suspension structure, capable of connecting with a fixing anchor chain of a sea surface wave power generation device through a supporting truss structure and hierarchically arranged below the sea surface in a suspension mode to form into an ocean current wave power generation system, achieving good utilization of the ocean energy and the like.

The invention belongs to the fields of the state monitoring and the fault diagnosis of vehicles, ships, engineering machinery, locomotive cars, engines, and the like by applying noise signals, in particular to a mechanical fault judgment system and method based on noise test, particularly suitable for complicated mechanical machinery which can not be provided with various sensors. The system comprises a high-frequency microphone, a sound card, a PC (Personal Computer) and a telescopic bracket, wherein the high-frequency microphone is fixed on the telescopic bracket and connected with the sound card, the sampling frequency of the high-frequency microphone can meet the requirement of the Nyquist theorem, and the sound card is connected with the PC. On the basis of combing the extraction andfractal algorithm of an energy band, noise signals in machinery operation are acquired and calculated to test mechanical faults by using the method; the system is simple to set, the economic cost is decreased, and the operation safety and the fault diagnosis accuracy are improved.

The invention relates to a drift-pillar-free sublevel barnyard caving mining method of an open pit transferred underground transitional period. The drift-pillar-free sublevel caving mining method comprises the following steps of: carrying out sublevel recovering; and finishing rock drilling, blasting and ore removing in a feeding path. The drift-pillar-free sublevel caving mining method is characterized in that at an open pit transferred underground recovering transitional period, open pit mining and underground hanging wall ore recovering are carried out at the same time; a barnyard method and a drift-pillar-free sublevel caving method are combined to recover hanging wall ore; when open pit ore is mined, a drift-pillar-free sublevel barnyard method is used for recovering a hanging wall ore sublevel feeding path; and after the open pit mining is finished, a drift-pillar-free sublevel caving method is used for carrying out large-scale blasting and ore removing on safety pillars, other sublevel ores and barnyard-method residual ores. The drift-pillar-free sublevel barnyard caving mining method disclosed by the invention has the advantages of effectively reducing accurate mining coefficient and saving economic cost. The accurate mining engineering amount is greatly reduced and the accurate mining invest is reduced at the same time; and the extracted ore amount and the production capability of unit accurate mining engineering are increased and the economic benefit is effectively improved.