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77results about How to "Reduce layout time" patented technology
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Method for second mining mining-stopping line coal column in super thick coal layer
ActiveCN107313778ARecovery is safe and reliableAvoid safety accidentsUnderground miningSurface miningEconomic benefitsEngineering
The invention discloses a method for second mining a mining-stopping line coal column in a super thick coal layer. The method comprises the following steps that (1), positions of a coal column second mining working surface transporting gate trough and a rail gate trough are stimulated; (2) comprehensive probing is conducted on an original working surface goaf area where the super thick coal layer mining-stopping line coal column is located, and potential safety hazard is removed; (3) a roadway in the propelling direction of the coal column second mining working surface is dug at the upper part of the super thick coal layer, and the roadway is filled; (4) a coal column second mining working surface mining returning roadway and a affiliated oblique roadway are dug, so that the coal column second mining working surface mining returning roadway and the affiliated oblique roadway form a completed producing system, and the coal column second mining working surface is arranged; (5) a bottom plate of the roadway is drilled from top to bottom for using as a filled pipeline; (6) filling paste is prepared, the filling paste is evenly injected into one side, close to the original working surface goaf area, of the transporting gate trough along the filled pipeline; and (7) comprehensive mining is conducted on the coal column second mining working surface. According to the method for second mining the mining-stopping line coal column in the super thick coal layer, the compressed coal amount is reduced, waste of coal resources is avoided, the economic benefits of enterprises are improved, and the service life of mines and mining areas is prolonged.
Owner:TAIYUAN UNIV OF TECH
Intelligent layout method used for rectangular part
InactiveCN103500255AMeet the process requirementsEfficient searchSpecial data processing applicationsRelevant informationAlgorithm
The invention discloses an intelligent layout method used for a rectangular part. The method comprises the steps that S1 relative parameters of the genetic algorithm are initialized; S2 relative information of the rectangular part is extracted from a rectangular part bank to be laid out; S3 relative information of raw material boards is extracted from a board tank; S4 the obtained information is coded, and primary species are generated randomly; S5 one-by-one decoding is conducted on the primary species by means of the lowest horizontal line search algorithm to obtain solution using efficiency; S6 selection, crossover and mutation operation is conducted according to the genetic algorithm until iteration is finished, and the optimal layout scheme is output. According to the intelligent layout method, the process requirement of the rectangular part can be met well, the intelligent algorithm and the heuristic algorithm are combined, one optimizing scheme can be found rapidly and efficiently, and therefore the material using rate of an enterprise is greatly improved, layout time can be obviously shortened, and layout efficiency is improved.
Owner:NANTONG UNIVERSITY
Automated analog layout
ActiveUS10783292B1Accelerate Design CycleFast resultsSpecial data processing applicationsSymbolic schematicsDesign cycleElectrical and Electronics engineering
An automated analog layout tool creates not just one, but many electrically correct layouts from an input schematic. Designers can explore multiple layout options in a fraction of the time needed to produce just a single layout by hand. Because the tool produces layout results so quickly, parasitics are available for simulation early in the design process, further speeding the entire design cycle. The tool considers place and route concurrently.
Owner:PULSIC
Irregular layout method based on real-coded quantum evolutionary algorithm
InactiveCN105740953AReduce code lengthReduce layout timeGenetic algorithmsQuantum evolutionary algorithmReal arithmetic
The invention belongs to the technical field of the computer-aided layout technology, and relates to an irregular layout method based on a real-coded quantum evolutionary algorithm. The irregular layout method comprises the following steps: S1: utilizing a real-coded quantum probability amplitude to carry out uniform coding on a layout number sequence and a rotation angle sequence; S2: carrying out system initialization; S3: calculating the fitness of a population individual, and storing an optimal individual; S4: updating a quantum population; S5: carrying out quantum observation; S6: arranging a print into a mother board, carrying out individual fitness evaluation again, and updating the optimal individual; and S7: judging a termination condition. Since the quantum evolutionary algorithm is applied for solving an irregular layout problem, the irregular layout method has the advantages that layout time can be effectively shortened, the search precision of layout is improved and the use ratio of raw materials is improved, and the irregular layout method can be used for the layout in production and processing including glass cutting, clothes and leather cutting and the like.
Owner:WENZHOU UNIVERSITY
Determination method and device of object storage position in storage cabinet
The invention discloses a determination method and a device of an object storage position in a storage cabinet. Storage boxes in the storage cabinet are divided into M layers. The method comprises the following steps: the descending sorting is performed for multiple objects to be stored according to the type number of associated objects of each object to obtain an object sequence; previous L objects are selected from the object sequence, and the total number of the storage boxes occupied by the previous L objects is not smaller than M; the previous L objects are respectively stored in each layer of the storage cabinet, and one of the previous L objects is at least placed in each layer of the storage cabinet; the associated objects of the objects determined in the storage cabinet are determined; and the associated objects of the determined objects are stored in the same one or adjacent layers of the storage boxes with the determined objects. Through the method, related persons can quickly find out the objects; the object sequence is obtained through a mode of counting if the objects are synchronously shown in the same one object taking list or the same one selling list; and the relevance of the objects is obtained by a data excavation technology, so that the layout time is largely shortened.
Owner:SUZHOU POWERSITE ELECTRIC CO LTD
Existing line railway tunnel defect comprehensive improvement operation trolley
InactiveCN103670435AMeet the requirements of the operating limitsSatisfy simultaneous operation requirementsTunnelsRailway tunnelEngineering
The invention discloses an existing line railway tunnel defect comprehensive improvement operation trolley, and belongs to the technical field of tunnel defect improvement construction equipment. The existing line railway tunnel defect comprehensive improvement operation trolley is composed of a walking mechanism, a fixing rack, a lifting type top layer operation platform, a turning type lower layer operation platform and a retractable type upper layer operation platform, wherein the fixing rack is fixed to the walking mechanism, the lifting type top layer operation platform is arranged in the fixing rack, the turning type lower layer operation platform is provided with a turning mechanism, and the retractable type upper layer operation platform is provided with a retraction mechanism. The operation platforms can be mechanically retracted or lifted, the trolley can mechanically adjust the space operation area in the vertical direction and the horizontal direction of a tunnel and the operation space between the operation platforms, tunnel defect full section improvement station requirements are met, the time for arranging the operation platforms in the defect improvement earlier stage is greatly shortened, and tunnel defect improvement efficiency is improved. The trolley is especially suitable for conducting simultaneous improvement on a tunnel defect full section.
Owner:CHINA RAILWAYS CORPORATION +1
Circuit layout method for printed circuit board, eletronic device and computer readable recording media
InactiveUS20130326453A1Improve circuit efficiencyQuality improvementCAD circuit designSpecial data processing applicationsEngineeringRadio frequency
The present disclosure illustrates a circuit layout method for printed circuit board which is adapted for an electronic device. The circuit layout method includes the following steps. A parameters configuration interface is provided for receiving corresponding stack-up parameters and a plurality of layout parameters. A radio frequency layer, a first keep out layer, and a reference layer are determined based on the stack-up parameters. The first keep-out layer is placed between the radio frequency layer having a first signal trace disposed thereon and the reference layer. A first keep-out region on the first keep-out layer is formed in corresponding to the first signal trace. Circuit layouts disposed inside the first keep-out region are removed. Consequently, the corresponding keep-out region may be automatically generated in accordance to the signal requirements of the signal trace while designing the circuit layout thereby increase circuit layout quality and efficiency thereof.
Owner:WISTRON CORP
Layout modification engine for modifying a circuit layout comprising fixed and free layout entities
InactiveUS20100205573A1Reduce processing timeFew conflictComputer aided designSpecial data processing applicationsEngineeringIntegrated circuit
The invention relates to a layout modification engine (18) for modifying a circuit layout (1) comprising layout entities including a fixed layout entity and free layout entities. The layout entities are a representation of at least part of an integrated circuit, each layout entity comprises at least one layout element. The fixed layout entity is restrained to a predefined position. The layout modification engine comprises the conflict-solver for resolving conflicts between the fixed layout entity and the free layout entities. The conflict-solver comprises a layout analyzer (14) and a conflict-solving-module (16). The conflict-solving module generates a set of fixed layout elements for resolving the detected conflict. Because the layout modification engine converts the fixed layout entity into the set of fixed layout elements, the layout modification engine will encounter less conflict situations while modifying the circuit layout which reduces the processing time.
Owner:SAGANTEC ISRAEL
Automatic layout method based on critical polygonal plates
PendingCN110457756AImprove plate utilizationReduce layout timeForecastingSpecial data processing applicationsGenetic algorithmUtilization rate
The invention discloses an automatic layout method based on a critical polygonal plate, which comprises the following steps: reading a part CAD drawing, and identifying and storing information of eachpart; solving critical polygons among all the parts through a moving collision method and a Midget-Kovski vector sum method; determining a dischargeable point of each to-be-discharged part based on the obtained critical polygon; and performing global optimization search on the part arrangement sequence by utilizing a genetic algorithm so as to determine the optimal arrangement sequence of the parts. Compared with traditional automatic plate arrangement, the plate utilization rate is increased, the part arrangement time is shortened, complex information such as part holes is considered, and the method is more practical and stable.
Owner:TIANJIN UNIV
Intelligent control system applied to guest room
ActiveCN108415321ARealize intelligent on-off controlEliminate noiseProgramme controlComputer controlComputer moduleEngineering
The invention provides an intelligent control system applied to a guest room. The system comprises a Doppler sensor which is arranged on the roof of the guest room to transmit a microwave signal to ahuman body and receive a feedback signal of the human body, a filter amplifier module which is used for receiving the feedback signal acquired by the Doppler sensor and carrying out noise filtering and signal amplification on the feedback signal, a control module which receives the feedback signal filtered and amplified by the filter amplifier module, and calculates the amplitude and phase of thesignal to acquire the heartbeat number and breath number of the human body, and a power control module which is used for acquiring the heartbeat number and breath number, which are acquired by the control module, of the human body. If the heartbeat number and breath number of the human body are zero, the power control module cuts off the power line of the guest room. If the heartbeat number and breath number of the human body are not zero, the power control module turns on the power line of the guest room. The system uses the Doppler effect, measures the breath and heartbeat without touching the human body, and turns on and off the power supply of the guest room according to whether a person is in the guest room or not.
Owner:JINAN QUANWANG BIOTECH CO LTD
Iintelligent configuration platform suitable for quickly arranging UWB positioning system
PendingCN112612000ASolve various problems in manual configurationReduce labor costsSynchronisation arrangementPosition fixationData acquisitionEngineering
The invention provides an intelligent configuration platform suitable for quickly arranging a UWB positioning system, and the platform comprises a data collection module, a data preprocessing module, a time slot automatic distribution module, and a base station coordinate calculation module. The data acquisition module, the data preprocessing module, the time slot automatic distribution module and the base station coordinate calculation module are connected in sequence according to a flow mode configured by the base station to form the intelligent integrated configuration platform, and are all deployed on a cloud server or a local server. The data acquisition module acquires communication data between base stations through a network; the data preprocessing module classifies and arranges the original communication data acquired by the data acquisition module; the time slot automatic distribution module performs time slot automatic distribution on all base stations through a centralized time slot distribution algorithm; and the base station coordinate calculation module is used for resolving according to the information processed by the data preprocessing module to obtain a coordinate value of each base station and automatically writing a resolving result into the corresponding base station.
Owner:ZHENGZHOU LOCARIS ELECTRONICS TECH CO LTD
Accelerating simulated annealing method for integrated circuit layout
ActiveCN104679931AReduce running timeReduce movementSpecial data processing applicationsIntegrated circuit layoutComputer science
The invention relates to an accelerating simulated annealing method for integrated circuit layout. The method includes the steps of changing the size of each dynamic exchange window of a circuit module included in an integrated circuit; according to exchange success rate at former temperature and a random number for determining whether or not certain exchange is accepted, determining the sizes of the dynamic exchange windows, and allowing the size of each dynamic exchange window engaging in exchanging to dynamically change with the random number; applying different dynamic exchange window regulating strategies according to annealing high-temperature and low-temperature phases, thus allowing a whole simulated annealing process, from high temperature to low temperature, for the layout of the circuit module.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
Sensor positioning support for automobile acoustic performance test
PendingCN113503452AImprove experimental efficiencySimple structureSubsonic/sonic/ultrasonic wave measurementStands/trestlesCar seatControl engineering
The invention discloses a sensor positioning support for an automobile acoustic performance test. The sensor positioning support comprises a connecting cross rod, a quick clamping mechanism, a support rod connecting piece, at least one support rod and a sensor fixing clamp, the connecting cross rod is provided with the quick clamping mechanism, the support rod connecting piece is assembled on the connecting cross rod, the support rod can move in the axis direction of the support rod and is arranged on the support rod connecting piece in the mode of rotating along the axis of the support rod connecting piece, the sensor fixing clamp is fixed to the end portion of the support rod, a sensor for testing is fixed to the sensor fixing clamp, and the rapid clamping mechanism can be rapidly detachably connected to a mounting rod below an automobile seat headrest. The sensor positioning support for automobile acoustic performance testis simple in structure and ingenious in design; and moreover, the arrangement and adjustment time of a microphone sensor during the automobile performance test can be reduced, and the experiment efficiency of the automobile acoustic performance test is improved.
Owner:WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
Spiral conveying equipment
ActiveCN103523483AAvoid interferenceReduce space occupationMechanical conveyorsEngineeringScrew conveyor
The invention discloses spiral conveying equipment, and relates to the technical field of engineering machines. The spiral conveying equipment is used for solving the problem that when spiral conveyors are arranged in a concentrated mode in the prior art, staggering, interference and material discharging outlet blocking occurring during conveying in a concentrated mode occur. The spiral conveying equipment comprises a concentrating head and at least two spiral conveyors. The concentrating head is provided with a cavity, an opening and a concentrated material discharging outlet, wherein the opening and the concentrated material discharging outlet are both communicated with the cavity, and the opening is formed above the concentrated material discharging outlet. Each spiral conveyor is provided with a material feeding pipe, wherein each material feeding pipe is provided with a material discharging port, and each material discharging port is communicated with the opening through a detachable connection structure. According to the spiral conveying equipment, a material discharging head of an existing spiral conveyor is eliminated, the spiral conveying equipment is provided with the concentrating head which is provided with the concentrated material discharging outlet, and the problem that when the spiral conveyors are arranged in a concentrated mode, staggering, interference and material discharging outlet blocking occurring during conveying in a concentrated mode occur can be solved.
Owner:XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
Structure model derivation system and method
PendingCN111475970AImprove normalization and reliabilityShorten planning timeDesign optimisation/simulationProduct dataCommunication interface
The invention discloses a structure model derivation system, which is matched with an external product data management system, and is characterized in that the system comprises a database module and an interaction module, the interaction module comprises an interaction interface module and an automatic number taking module, and the database module stores a plurality of structure templates; the interaction interface module acquires a structure template from the database module and displays the structure template on an interaction interface; the interaction interface module acquires parameters of a to-be-derived new structure model; a communication interface is arranged between the automatic number taking module and the product data management system, and the automatic number taking module obtains a number from the product data management system through the communication interface according to the currently selected structure template; and the interaction interface module generates a newstructure model according to the parameters and number of the to-be-derived new structure model. By means of the structure model derivation method, the scheme arrangement time of research and development personnel is shortened by 80%, and the overall structure research and development efficiency is improved by 60%.
Owner:CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
A dynamic defense system for power system safety production
ActiveCN106875627BSafe and stable operationPrevent strayed into the intervalAlarmsGratingState parameter
Owner:STATE GRID CORP OF CHINA +2
Grounding wire assembly with real-time electricity testing function
PendingCN111585059AEasy to operateImprove securityElectric connection structural associationsConnection contact member materialCopper wireElectroscope
The invention discloses a grounding wire assembly with a real-time electricity testing function. The grounding wire assembly comprises a grounding wire clamp, an insulating operating rod and an electroscope, wherein the grounding wire clamp comprises a clamp head, a grounding wire set connected with the clamp head and a connector, the grounding wire set is connected with a grounding pin, the clamphead comprises a U-shaped part and two elastic clamping plates oppositely arranged on the inner sides of the two side edges of the U-shaped part, and the connector is connected with one side of an opening of the U-shaped part; the upper end of the insulating operating rod is connected with the connector of the wiring clamp, and the lower part of the insulating operating rod is provided with an operating handle; and the electroscope comprises a copper wire and an induction alarm module, one end of the copper wire is connected with the induction alarm module, and the other end of the copper wire is connected with the chuck of the grounding wire clamp. Grounding wire hanging, electricity testing and near-electricity alarm are integrated, and the device is suitable for electricity testing andgrounding functions of electric power lines of 10KV and above.
Owner:STATE GRID ZHEJIANG TAIZHOU CITY JIAOJIANG DISTRICT POWER SUPPLY CO LTD +2
Circumferential weld back chipping machining device
The invention discloses a circumferential weld back chipping machining device. The circumferential weld back chipping machining device comprises a driving roller carrier, a driving roller carrier base, a driven roller carrier, a circumferential weld back chipping machine, an integrated base, a first moving device, a second moving device, a first guide part and a second guide part; and by arrangingthe integrated base under the circumferential weld back chipping machine and the driven roller carrier, the consistency of the longitudinal height of the circumferential weld back chipping machine and the longitudinal height of the driven roller carrier can be ensured without paving a base plate, and the machining precision of the circumferential weld back chipping machining device is improved. The transverse position of the circumferential weld back chipping machine and the transverse position of the driven roller carrier can be quickly adjusted through cooperation of the guide parts and themoving devices. In the preparing process before circumferential weld back chipping machining, the steps of base plate paving, lifting, moving and the like are not needed, the driven roller carrier and the circumferential weld back chipping machine are convenient to arrange, moving is fast, the preparing time before circumferential weld back chipping is greatly shortened, the application range iswide, and the precision of circumferential weld back chipping is ensured.
Owner:SHANGHAI ZHENHUA HEAVY IND
Moving tower crane bridge surface running construction method and apparatus
ActiveCN101177932AReduced labor demandImprove mobilityBridge erection/assemblyArchitectural engineeringBridge deck
The invention discloses a bridge deck operation construction method of a mobile tower crane and a device thereof; when in the bridge construction, the mobile tower crane moves on finished bridge deck, then moves to the back of the bridge construction place, and is fixed on the bridge deck, so as to lift construction materials; the invention has the advantages that: the construction period can be shortened by 20 to 30 percent, thus greatly improving work efficiency, the labor demand is reduced by 40 to 50 percent, and related machinery and equipment investment is reduced by about 40 percent; the invention can not only improve work efficiency, but also enhance safety factor of construction, therefore, greatly increasing reliability of whole construction scheme. The invention has strong adaptability and can be used for almost constructions of concrete girder bridges and continuous construction of rigid frames.
Owner:GUIZHOU BRIDGE CONSTR GROUP
Multipurpose portable easy-to-store quick-to-install safety purse seine device
The invention relates to the technical field of purse seine, and particularly relates to a multipurpose portable easy-to-store quick-to-install safety purse seine device which comprises a seine body and further comprises a base, a winding assembly and a rotating assembly. Universal wheels are arranged at the bottom of the base, a box body used for containing the seine body is arranged on the base,and an opening used for allowing the seine body to penetrate through is formed in the side wall of the box body; the winding assembly comprises supporting wheels rotationally arranged at the bottom of the box body, rotating wheels and a plurality of fixing rods connected between the supporting wheels and the rotating wheels, the fixing rods are arranged in a hollow mode, a plurality of fixing rods are distributed in the circumferential direction of the middle axis of the supporting wheels, and the fixing rods are used for being connected with the seine body; the rotating assembly comprises acrank arranged in the box body in a rotating mode, and the crank is in transmission connection with the rotating wheels. The arrangement and withdrawing steps of the safety purse seine can be simplified so that the arrangement time of the safety purse seine is shortened and the workload is reduced.
Owner:GUIZHOU POWER GRID CO LTD
Advanced geology forecasting sensor laying and coupling device and method
ActiveCN109444951AEasy to operateReduce layout timeSeismic signal receiversSeismic signal transmissionWireless transmissionCoupling
The invention provides an advanced geology forecasting sensor laying and coupling device and method. The device comprises a shell, and the shell is provided with static electricity attraction units, arock-device coupling unit, a data collecting and locating sensor and a wireless data transmission unit, wherein the static electricity attraction units are arranged at the edges of the shell, and attracted to the surface of rock through static electricity so that the shell is fixed on a preset point, the rock-device coupling unit is arranged in the middle of the shell and closely couples the datacollecting and locating sensor and the surface of the surrounding rock, the data collecting and locating sensor collects information data required in advanced geology forecast, collects position information of the device in a tunnel and underground engineering, and uploads the information to the wireless data transmission unit, and the wireless data transmission unit receives collected detector information and position information, and transmits the collected information to a host through a wireless transmission technology.
Owner:SHANDONG UNIV
Circuit layout method for printed circuit board, electronic device and computer readable recording media
InactiveUS8826220B2Improve efficiencyQuality improvementCAD circuit designSpecial data processing applicationsRadio frequencySignal trace
Owner:WISTRON CORP
Shielding cover selecting method, device, computer equipment and shielding cover
ActiveCN109862768AEfficient use ofReduce typesMagnetic/electric field screeningPrinted circuit manufactureComputer engineeringComputer equipment
The invention discloses a shielding cover selecting method, device, computer equipment and a shielding cover. The method comprises steps: a layout instruction for laying components inputted by a useris received; whether signals for enabling a user to select a specified component are received is detected according to the layout instruction; if yes, after the specified component is laid according to a preset layout rule, the first layout parameters of the specified component are acquired; a shielding cover component library matched with the specified component is displayed according to the first layout parameters of the specified component, wherein the shielding cover component library at least comprises the shielding cover and the size data of the shielding cover; and the shielding cover which is selected in the matched shielding cover component library and matched with the specified component is selected as a target shielding cover. Thus, the purpose is to solve the problem of how toeffectively use the shielding cover.
Owner:深圳市水世界信息有限公司
Safety purse seine storage hook
PendingCN109736635AProtected storageExtended service lifeFencingEconomic benefitsUltimate tensile strength
The invention discloses a safety purse seine storage hook. The storage hook comprises a storage hook body, the storage hook body is divided into an upper ring part, a middle connecting part, a lower arc-shaped part and an extension part connected with the arc-shaped part; a ring opening is distributed in the ring part, a fixing hole is formed in the connecting part in a penetrating mode, a hook opening is formed among the arc-shaped part, the connecting part and the extension part, an inner arc-shaped opening is distributed in the side, facing the extension part and the connecting part, of thehook opening, an outer arc-shaped opening is formed in a position corresponding to the inner arc-shaped opening, and the inner arc-shaped opening is movably connected with the outer arc-shaped opening. According to the present invention, through improvement, an operator can easily finish the storage or arrangement of a purse seine, the phenomenon of purse seine winding is avoided, the effect of protecting the purse seine is achieved, the service life of the purse seine is prolonged, the operation efficiency is improved, the arrangement time of safety measures is shortened, the labor intensityis reduced and the labor time consumption is greatly reduced, and meanwhile, the storage hook is low in manufacturing cost and has obvious economic benefits.
Owner:王慧忠
Automated analog layout
ActiveUS11281828B1Increase speedMinimal setupSpecial data processing applicationsSymbolic schematicsDesign cycleLayout
An automated analog layout tool creates not just one, but many electrically correct layouts from an input schematic. Designers can explore multiple layout options in a fraction of the time needed to produce just a single layout by hand. Because the tool produces layout results so quickly, parasitics are available for simulation early in the design process, further speeding the entire design cycle. The tool considers place and route concurrently.
Owner:PULSIC
Cabinet for roll-to-roll conveying selective electroplating flexible printed circuit board and manufacturing process of cabinet
Owner:CAREER TECH MFG
Open pit coal mine dumping method
The embodiment of the invention discloses an open pit coal mine dumping method which comprises the following steps of performing gradual segment descending on an end slope road; building an end sloperamp on the end slope road in a segment descending direction; and conveying overburden of a coal mining yard to a dumping site from the end slope ramp. By utilizing the open pit coal mine dumping method provided by the embodiment of the invention, a solid yardage end slope ramp can be utilized for directly discarding rocks and soils after explosion of the coal mining yard to the dumping site without discarding back, so that a transportation distance is saved, and the dumping cost is lowered; the arrangement time of the end slope road at the lower part of the solid yardage end slope ramp can bedelayed, and end slope coals are mined as much as possible within a design range, so that the overburden quantity at an end slope is reduced, building of a slope ramp of the coal mining yard can be avoided, the dumping space of the dumping site is released, the forward movement speed of the dumping site, the moving frequency of the solid yardage end slope ramp and the dumping cost are lowered; and meanwhile, the position of a slope ramp does not need to be reserved at the dumping site, so that neat slope of the dumping site can be ensured, and the cleanness of the dumping site is improved.
Owner:CHINA SHENHUA ENERGY CO LTD +1
Ship arranging method for immersed tube installation
InactiveCN107642106ASmooth releaseReduce layout timeArtificial islandsUnderwater structuresMarine engineeringImmersed tube
The invention discloses a ship arranging method for immersed tube installation. A command ship, a crane ship, a transport ship and a diving ship are involved. The arranging method comprises the following steps that anchor systems are distributed, and anchors are distributed at work positions respectively; the command ship enters a site, stopped and moored; the diving ship enters the site, stoppedand moored; the crane ship enters the site, stopped and moored; the transport ship transports immersed tubes to the work positions and is moored on the side face of the crane ship, and arrangement ofthe ships is completed. According to the ship arranging method for immersed tube installation, the ships can be anchored and then moored respectively to achieve scientific and reasonable arrangement;the method is simple in operation and high in efficiency, and the ship arrangement time can be effectively saved; the method is suitable for the ships to conduct construction of the immersed tubes ina complex and changeable water area environment, such as in harbor environments having rising tide, falling tide and still tide stages and limited work time windows, arrangement of the ships is efficiently completed, and later smooth settlement of the immersed tubes is ensured.
Owner:CCCC FIRST HARBOR ENG +1
High-voltage power cable single-phase sheath double-end direct grounding method and system
PendingCN114550993AReduce induced voltageReduce layout timePower cables for overhead applicationDesign optimisation/simulationPower cableControl theory
The invention discloses a high-voltage power cable single-phase sheath double-end direct grounding method and system. The two ends of an intermediate-phase single-core cable sheath are directly grounded; in addition, one end of the sheath of the two-phase single-core cable is directly grounded, the other end of the sheath is grounded after being connected with a protection device, and the metal sheath of the middle phase serves as a return wire, so that the equipment cost of the return wire and the protector is saved, and the risk that the return wire is stolen is avoided; especially, when a fault occurs in the intermediate phase with two ends directly grounded, the induced voltage of the fault phase sheath is obviously reduced; when any phase of which the two ends are not directly grounded fails, the induced voltage of the fault phase sheath is slightly reduced; the grounding mode provided by the invention is more suitable for cable loops laid in parallel. According to the grounding mode provided by the invention, the induced voltage of a cable sheath under a fault condition is reduced, the use of a return wire and a protector is reduced, and the engineering construction cost and the return wire arrangement time are reduced.
Owner:JIANGSU ELECTRIC POWER CO
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