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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 17. Отображено 17.
07-07-2023 дата публикации

Reconstructed goaf coal bed gas extraction well based on waste coal bed gas well and extraction method

Номер: CN116398225A
Принадлежит:

The goaf coal-bed gas extraction well comprises a coal-bed gas well vertical well section, a horizontal well horizontal section and a packer, the packer is located in the coal-bed gas well vertical well section, and a horizontal well deflecting position is located above the packer and communicated with the coal-bed gas well vertical well section. The number of the horizontal well branches is determined according to the position of the vertical well section of the coal-bed gas well in the goaf, and the length of the horizontal section of the horizontal well is determined according to the distance between the position of the vertical well section of the coal-bed gas well in the goaf and the open-off cut. The extraction method comprises the three steps of coal-bed gas well selection, extraction well arrangement and extraction operation. According to the method, the waste coal-bed gas well is effectively reused, so that when coal-bed gas extraction operation in the goaf is carried out, manpower ...

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23-05-2023 дата публикации

Device and method for testing spatio-temporal evolution law of coal mine overlying strata fracture

Номер: CN116147711A
Принадлежит:

The invention provides a device and a method for testing spatio-temporal evolution rules of coal mine overlying strata fractures, and belongs to the technical field of coal mine gas extraction and strata control. The problem that double tests of coal seam roof control and gas extraction cannot be achieved at the same time through an existing testing method and device is solved. Comprising a dense grating optical fiber system, a fracture mechanical attribute analysis system and a fracture evaluation system, the dense grating optical fiber system comprises dense grating optical fiber measuring lines and an optical fiber signal modem, and the dense grating optical fiber measuring lines are connected with the optical fiber signal modem through wires; the fracture mechanical attribute analysis system comprises a displacement component vector recognizer and fracture mechanical attribute analysis software; the fracture evaluation system comprises a water injection system, a double-string screen ...

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19-03-2014 дата публикации

Hollow grouting anchor rod structure based mine pressure measuring device

Номер: CN103644986A
Принадлежит:

The invention provides a hollow grouting anchor rod structure based mine pressure measuring device and belongs to the technical field of mine equipment. The hollow grouting anchor rod structure based mine pressure measuring device comprises the anchor rod portion and the pressure measuring portion which is arranged on a rod body of the anchor rod portion. Compared with the prior art, the separate punching operation does not need to be performed on the measuring device, the pressure measuring portion can be automatically installed in place along with the anchor rod portion when the anchor rod construction is achieved according to the normal construction process, and accordingly the installation process of the pressure measuring device is completely omitted, the working efficiency is improved, and meanwhile the labor intensity of the staff is reduced. Four pressure sensors are utilized as a pressure signal collector and are uniformly distributed at four vertices of a regular tetrahedron with ...

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10-06-2015 дата публикации

Coal mine underground borehole anchoring reinforcement device

Номер: CN104695993A
Принадлежит:

The invention relates to a coal mine underground borehole anchoring reinforcement device and belongs to the technical field of mine support and monitoring. With the adoption of the device, the diameter of an anchoring end is effectively increased, so that an anchoring cable, a hole wall and an anchoring agent are matched with one another, the anchoring force is increased, and the anchoring effect is enhanced. The device comprises a plurality of reinforcement cylinders, a plurality of stirring rods and a plurality of stopping rings, wherein the anchoring cable is sleeved with the plurality of reinforcement cylinders and the plurality of stopping rings, the reinforcement cylinders are arranged on outer sides of the stopping rings, the plurality of stirring rods are arranged at the front part of the reinforcement cylinder located in the first place, tips are arranged at front parts of the stirring rods, a plurality of first fixing holes and a charging hole are formed in the wall of each reinforcement ...

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29-10-2014 дата публикации

High-density coral fleece fabric and manufacturing method of high-density coral fleece fabric

Номер: CN104120544A
Принадлежит:

The invention discloses a manufacturing method of a high-density coral fleece fabric. The manufacturing method sequentially includes the steps of warping filament yarns, weaving coral fleeces, cutting the fleeces, conducting high temperature setting, conveying the coral fleeces to a vat for scouring and bleaching, conducting secondary setting at a high temperature, conducting dying or printing, conducting ageing, conducting washing and drying, conducting soft anti-static processing, processing fluff, conducting fluff brushing on the back face at a high speed, conducting ironing and shearing two times, conducting loose drying and conducting setting. Compared with a common coral fleece fabric, the high-density coral fleece fabric is plump and elastic, the floating fluff is less, and the fluff is not prone to dropping. In addition, elaborate patterns are easily presented by conducting printing on the fabric.

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04-02-2015 дата публикации

Online monitoring device and method for roadway deformation data

Номер: CN104330064A
Принадлежит:

The invention provides online monitoring device and method for roadway formation data, and belongs to the technical field of safety monitoring of mines. The device comprises a plurality of ultrasonic emitting sensors, a plurality of ultrasonic receiving sensors, a CPU, a plurality of base stations and a ground monitoring center; the CPU comprises a power module, a temperature sensor, a microprocessor, a signal control module, a display module and a storing module. According to the device and method, the ultrasonic sensor is used for testing the distance, so that the interference resistance is high, and the measuring precision is improved; the measuring error caused by temperature and a hardware device is corrected, thus the measuring precision is obviously raised, and the measuring range is expanded; the data are stored on real time through an SD card, so that the labor intensity of manual recording is reduced, the measured original data are rich, and sufficient basis is provided for the ...

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06-06-2023 дата публикации

Complete set of supporting equipment suitable for dynamic pressure large-deformation roadway

Номер: CN116220761A
Принадлежит:

The invention relates to the technical field of dynamic pressure roadway equipment, in particular to complete supporting equipment suitable for dynamic pressure large-deformation roads.The complete supporting equipment comprises a base, fixing cones are connected to the two ends of a vertical symmetry axis of the bottom of the base, a supporting block is connected to the top of the base, and a bearing block is connected to the inner wall of the vertical symmetry axis of the top of the supporting block; a first connecting block is connected to the center of one side of the inner wall of the supporting block, the whole equipment can be more convenient to carry and transport by arranging a handle, and the whole supporting equipment is more convenient and faster to mount by arranging a simple connecting mode between a first bolt and the first connecting block and between a second connecting block and a bearing block; and by arranging a simple connecting mode between the top plate and the mounting ...

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30-12-2015 дата публикации

Antiskid ice silk sheet

Номер: CN0204908834U
Принадлежит:

The utility model discloses an antiskid ice silk sheet, antiskid ice silk sheet includes sheet body (3), antiskid ice silk sheet still includes fixed part, fixed part includes elastic cord (1) and anti -skidding picture peg (2), the antiskid picture peg (2) through elastic cord (1) with the edge connection of sheet body (3). The antiskid ice silk sheet that has this kind of structure is convenient to use not only, has solved the problem of smooth unevenness, lays moreover behind the bed, and it is holistic pleasing to the eye not influence the sheet, has satisfied the high requirement of consumer's sight, adopts the fixed part who locates the sheet body to fix smooth sheet under the prerequisite of trying one's best use fixed part few simultaneously, its industrial production and practical application's feasibility height.

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05-06-2020 дата публикации

Express cabinet capable of automatically taking and placing goods

Номер: CN0210682010U

An express cabinet capable of automatically picking and placing goods comprises a cabinet body, a plurality of sets of three-dimensional goods shelves are arranged in the cabinet body in the left-right direction, an automatic picking and placing device is arranged on the lower portion of the front side of each set of three-dimensional goods shelves, a goods picking opening located in the front side of each automatic picking and placing device is formed in the cabinet body, and a touch screen and a controller are arranged above each goods picking opening. Each three-dimensional goods shelf is provided with a plurality of storage spaces, a tray used for containing goods is arranged at the bottom of each storage space, and each three-dimensional goods shelf is provided with a roadway pick-upmachine used for driving the trays to move in the automatic pick-and-place device and the storage spaces. And the controller is respectively connected with the automatic pick-and-place device, the roadway ...

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22-04-2015 дата публикации

Production method for collecting fluorite-contained tailings from rubber seed oil

Номер: CN104525380A
Принадлежит:

The invention discloses a production method for collecting fluorite-contained tailings from rubber seed oil. The method comprises the following steps: (1) the rubber seed oil is prepared to a low-temperature resistant fatty acid saponified matter collecting agent; (2) the desliming classification treatment is performed for fluorite ore-contained flotation tailings; (3) the pulp mass concentration of the deslimed fluorite-contained tailings is controlled within 25-30%; and (4) the fluorite contained ore pulp is mineralized; and a four-six-segment direct flotation separation process is performed to obtain fluorite concentrate products with 90-95% of the fluorite (CaF2) content. The method has the following characteristics: the novel low-temperature resistant fatty acid saponified matter collecting agent prepared by the rubber seed oil has better collecting property on the fluorite in the fluorite-contained tailings; and the fluorite concentrates with 90-95% of the CaF2 grade can obtained ...

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01-10-2014 дата публикации

Gob-side entry retaining method of fully-mechanized mining/full-mechanized caving mining working face

Номер: CN104074534A
Принадлежит:

The invention provides a gob-side entry retaining method of a fully-mechanized mining/full-mechanized caving mining working face, belongs to the technical field of coal mine underground supporting, and is applicable to thick-coal-bed and high-gas-content coal mining working faces. By aiming at the problems generated when the existing gob-side entry retaining technology is adopted by the working face, the gob-side entry retaining method adopts the scheme that prefabricated cylindrical pier studs are arranged in a roadway arranged behind an end part hydraulic support frame of a stope working face, and in addition, square timbers are built above the pier studs, so that the pier studs can realize the in-time and firm contact with a top plate, and the effective supporting on the top plate is ensured; wood plates are used for sealing among the pier studs, the air leakage to a gob area can be effectively prevented, and the problem of spontaneous combustion of float coal in the gob area due to ...

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30-06-2023 дата публикации

True triaxial mechanical parameter measurement experiment device and method for coal rock while drilling

Номер: CN116359024A
Принадлежит:

The invention relates to a true triaxial coal rock mechanical parameter measurement experiment device and method, the device comprises a support frame, a true triaxial mechanism and a drilling mechanism, the true triaxial mechanism and the drilling mechanism are arranged on the support frame in parallel, the true triaxial mechanism is provided with a heating temperature control base plate, the drilling experiment under the multi-coupling condition can be completed, and the true triaxial mechanism is provided with a heating temperature control base plate. The method is used for exploring changes of drilling machine motion parameters of different coal-bearing stratum samples in a drilling experiment under the multi-coupling condition, parameters obtained in the experiment are closer to parameters obtained under the engineering field condition, and the distinguishing accuracy of rock properties and stratum combinations of coal-bearing strata can be greatly improved. The true triaxial stress ...

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08-09-1999 дата публикации

Loud-speaker

Номер: CN0001228005A
Автор: LUO MINGKUN, MINGKUN LUO
Принадлежит:

A sounding piece for loudspeaker is aimed at reducing size and weight and elongating service life and is composed of magnet, vibrating membrane, pad, coil and circular shell. It features that said circular shell in which all units are sequentially contained is a metal one with heat-radiating ribs and said magnet is Nb-Fe-B material. Its advantages are small size, light weight, long service life and easy assembling and disassembling.

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01-04-2015 дата публикации

Gas control method for large-mining-height working face of high gas coal seam

Номер: CN104481578A
Принадлежит:

The invention provides a gas control method for a large-mining-height working face of a high gas coal seam, and belongs to the technical field of safety of mines. The gas control method comprises the steps of arranging a first bed extraction tunnel during excavating at the working face; upwards arranging a crossing hole through the first bed extraction tunnel to pre-extract gas; arranging and cutting holes in the bed extraction tunnel to pre-extract gas; arranging an inclined connection roadway to form a ventilation circuit; arranging a second bed extraction tunnel and a connection roadway; pre-extracting gas through the crossing hole which is upwards arranged through the first bed extraction tunnel; arranging a high extraction tunnel to reach a gob caving slit band; arranging the crossing hole in the high extraction tunnel; pumping gas at the high extraction tunnel. According to the gas control method for the large-mining-height working face of the high gas coal seam, gas pumping drilling ...

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07-10-2015 дата публикации

Dribbling embroidery la sheer blanket

Номер: CN0204683266U
Принадлежит:

The utility model relates to a dribbling embroidery la sheer blanket, it includes one deck to the two -layer blanket face of being made by the la sheer surface fabric of borduring all around, blanket face upper portion directly is equipped with the embroidery pattern. The utility model discloses an embroidery la sheer blanket does not have plastic film yoshino membrane on the embroidery product for more comfortable when the blanket uses, feel in that the embroidery position is not hard, the outward appearance is elegant appearance more, and greatly reduced manufacturing cost.

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01-04-2015 дата публикации

Fully mechanized caving face gob-side entry retaining process and ventilating method

Номер: CN104481568A
Принадлежит:

The invention relates to a fully mechanized caving face gob-side entry retaining process and a ventilating method, and belongs to the technical field of mine supports and ventilating security. The process is applied to a high-gas thick-seam large-section roadway with poor conditions; an air inlet way, an air return way, a remained gob-side entry and a gas discharge way form an Y-I ventilating mode, and a problem of gas concentration exceeding limitation caused by corner methane accumulation on a coal mining working face is solved; the air return way behind a fully mechanized caving face is retained to serve as the gob-side entry, and gob-side entry retaining operation is performed, so that the mining without coal pillars is achieved, and the mining coefficient is ensured; a pier column serves as side way support, so that the side way supporting strength is improved; gangue is used for establishing an additional gangue wall on the outer side of the pier column of the side way support, so ...

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23-12-2015 дата публикации

Cool blanket of summer

Номер: CN0204889420U
Принадлежит:

The utility model relates to a cool blanket of summer is by the first head of a quilt (1), the second head of a quilt (2) and connection blanket main part (3) of the first head of a quilt (1) and the second head of a quilt (2) are constituteed, the first head of a quilt (1), the second head of a quilt (2) and blanket main part (3) all include precoat (11, 21, 31 ), lower precoat (12, 22, 32 )And arrange in go up precoat (11, 21, 31 )With lower precoat (12, 22, 32 )Between filler (4), go up precoat (11, 21, 31 ), lower precoat (12, 22, 32 )And the sewing thread quilting is connected between filler (4), the lower precoat (12 of the first head of a quilt (1) and blanket main part (3), 32 )For nice and cool fiber surface material. The utility model discloses a cool blanket of summer has good nice and cool function, can give other people sensation nice and cool in the twinkling of an eye in summer, reduces the use of air conditioner, the energy saving, and can reduce the sick possibility that ...

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