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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 9. Отображено 9.
14-07-2023 дата публикации

Model test device and test method for simulating construction of tunnels with different clear distances

Номер: CN116429576A
Автор: HU HUI, HUAN YUXIANG, YANG WENBO, TIAN HAOSHENG, YAO CHAOFAN, ZHOU YANG, YOU ZHUGANG
Принадлежит:

The invention discloses a model test device and test method for simulating different clear distance tunnel construction, and the device comprises a box body, the box body is provided with first tunnel holes and second tunnel adjusting holes, each second tunnel adjusting hole is provided with a second tunnel translation block, and the two second tunnel translation blocks are correspondingly provided with second tunnel holes; a rack part is arranged at the bottom of the second tunnel translation block, a translation driving mechanism is arranged below the rack part, shaft rod sliding grooves are formed in the upper side and the lower side of the second tunnel adjusting hole correspondingly, and two sliding shaft rods are arranged in each shaft rod sliding groove. According to the test device and the test method, the optimal clear distance of the adjacent tunnel can be obtained through test simulation, and long-term research in the construction period or the operation period of the adjacent ...

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Номер записи: 1
23-06-2023 дата публикации

Testing device for realizing high ground stress segmented loading and fault dislocation coupling effect

Номер: CN116298186A
Автор: HE CHUAN, GENG PING, WANG QI, WANG TIANQIANG, CHEN JUNBO, ZHANG YINGBIN, YAO CHAOFAN
Принадлежит:

The invention discloses a test device for realizing high ground stress segmented loading and fault dislocation coupling effect. The test device comprises a segmented support frame, a loading plate, a reaction frame and loading control system (a vertical flange oil cylinder and a horizontal flange oil cylinder), a bearing bracket, a pushing hydraulic oil cylinder, a reaction device, a guide device (a guide plate and a clamping plate) and a corner plate, the loading strokes of the vertical flange oil cylinder and the horizontal flange oil cylinder are controlled, and a stable three-dimensional crustal stress field is applied to the soil body; the pushing hydraulic oil cylinder is controlled to provide sliding force, so that the movable disc moves horizontally along the guide angle of the guide plate, and fault movement simulation is achieved. The size of the device is adjustable, and a large-scale test can be carried out; the segmented loading of three-dimensional high ground stress can be ...

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Номер записи: 2
01-08-2023 дата публикации

Inclined rigid slidable structure for protecting tunnel in reverse fault

Номер: CN116516927A
Автор: YAO CHAOFAN, GUO DEPING, ZHENG KE, HE CHUAN, YAN QIXIANG, YANG WENBO, ZHANG YIFEI, CHENG TIANJIAN
Принадлежит:

The invention provides an inclined rigid sliding structure for protecting a tunnel in a reverse fault, which is characterized by comprising a first sliding block group and a second sliding block group, and the first sliding block group and the second sliding block group are respectively arranged on two sides of the tunnel in the length direction; the first sliding block group and the second sliding block group are obliquely arranged relative to the ground surface; each of the first sliding block group and the second sliding block group comprises two sliding blocks which are connected with each other in a sliding manner; the first sliding block set and the second sliding block set absorb energy released by reverse fault dislocation, the energy is prevented from being transmitted to the tunnel, the tunnel structure is protected against the instability phenomenon, the first sliding block set and the second sliding block set are arranged outside the tunnel, and on the basis that the tunnel ...

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Номер записи: 3
26-05-2023 дата публикации

Flexible connecting device used between driving box and follow-up box of vibration model box

Номер: CN116164917A
Автор: HE CHUAN, GENG PING, WANG QI, WANG TIANQIANG, YANG QINGCHENG, ZHANG YINGBIN, YAO CHAOFAN
Принадлежит:

The invention discloses a flexible connecting device used between a main box and a follow-up box of a vibration model box. The flexible connecting device is composed of a mounting plate and a plurality of module units evenly arranged on the mounting plate. Cloth clamping rubber sheets are arranged on the edges of the two sides of the mounting plate and used for covering gaps between the mounting plate and the driving box and the follow-up box; the cloth clamping rubber sheet is fixedly installed on the inner side of the box body through the steel pressing plate. Flexible connection between the driving box and the follow-up box of the vibration model box can be achieved, so that the vibration model box can transmit power and has a certain activity amount, three-direction six-degree-of-freedom movement of the vibration model box is achieved, meanwhile, the sealing performance of model soil is guaranteed, and the driving box and the follow-up box are connected into a whole; the time delay ...

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Номер записи: 4
21-01-2015 дата публикации

Interface circuit applied to avalanche photodiode working in linear mode

Номер: CN104296866A
Автор: ZHENG LIXIA, WANG MEIYA, YUAN DEJUN, TANG HAOJIE, YAO CHAOFAN, WU JIN, ZHANG XIUCHUAN, GAO XINJIANG
Принадлежит:

The invention discloses an interface circuit applied to an avalanche photodiode working in a linear mode. The interface circuit is composed of five parts, namely, a front-arranged trans-impedance amplifier, a single-turn dual-circuit, a voltage amplifier, an amplitude detector and a gating circuit. The front-arranged trans-impedance amplifier amplifies weak light induction current signals generated by the avalanche photodiode and converts the weak light induction current signals into voltage signals. The single-turn dual-circuit converts single-end output signals of the front-arranged trans-impedance amplifier into differential signals. The voltage amplifier further amplifies the differential signals to the order at which the differential signals can be distinguished by a comparator. The amplitude detector outputs reasonable digital logic signals according to the changes of signals at the input end of the amplitude detector. The gating circuit is used for controlling the working state of ...

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Номер записи: 5
09-05-2023 дата публикации

Deep foundation pit excavation side soil pressure coefficient measuring device and use method

Номер: CN116084473A
Автор: GUO DEPING, TANG JUNLIN, YAO CHAOFAN, ZHANG ZENG, QIAN JIAN, LI RUILIN, WANG FENG, LUO XUN, SHEN MINGLIANG, LIAO YANKAI
Принадлежит:

The invention discloses a deep foundation pit excavation side soil pressure coefficient measuring device and a using method. The device comprises a movable wall body, a control rod, a displacement sensor, a transverse soil pressure sensor and a vertical soil pressure sensor. The transverse soil pressure sensors are arranged on the soil facing side of the movable wall and are vertically arranged along the center line of the movable block, and the vertical soil pressure sensors are arranged on the inner wall of the deep foundation pit support structure and are arranged in a layered and staggered mode. Measurement by using the device comprises the following four steps: step 1, in an initial state of the deep foundation pit, reading initial values of the displacement sensor, the transverse soil pressure sensor and the vertical soil pressure sensor; 2, after excavation, according to a movable wall deformation curve, the position of a movable block is debugged layer by layer through a control ...

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Номер записи: 6
09-05-2023 дата публикации

Intelligent ground stress loading control system and method

Номер: CN116086969A
Автор: HE CHUAN, GENG PING, WANG QI, WANG TIANQIANG, GU WENQI, ZHANG YINGBIN, YAO CHAOFAN
Принадлежит:

The invention discloses an intelligent crustal stress loading control system and method, the system comprises an execution member for applying a crustal stress field and a control system, the execution member for applying the crustal stress field comprises horizontal soil pressure loading oil cylinders at the periphery of the interior of a test model box and vertical soil pressure loading oil cylinders at the top of a loading plate; the control system for applying the crustal stress field is a computer control system connected with all the oil cylinders; during test loading, the computer control system is operated to independently control the horizontal soil pressure loading oil cylinder and the vertical soil pressure loading oil cylinder to apply force to the loading plate according to crustal stress data obtained through calculation and exploration under actual engineering conditions, and loading of horizontal soil pressure and vertical soil pressure is achieved. The intelligent ground ...

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Номер записи: 7
12-05-2023 дата публикации

Segmented model test box for realizing non-uniform seismic excitation

Номер: CN116105954A
Автор: HE CHUAN, GENG PING, WANG QI, WANG TIANQIANG, HE DINGWEI, ZHANG YINGBIN, YAO CHAOFAN
Принадлежит:

The invention discloses a segmental model test box for realizing non-uniform seismic excitation, which comprises a driving box, a follow-up box, a follow-up box supporting bracket, an upper connecting plate, a bottom plate and a flexible connecting module, and is characterized in that the bottom plate is fixed on a vibration table top through bolts, and a T-shaped groove is formed in the bottom plate for mounting the driving box; the follow-up box is placed on a follow-up box supporting bracket below the follow-up box; the driving box and the follow-up box are connected through a flexible connecting module, and the follow-up box can rotate in three directions and six degrees of freedom; the driving box and the follow-up box are arranged at an interval to jointly form an integral container for containing a soil sample; upper connecting plates are mounted at the tops of the driving box and the follow-up box, and a plurality of groups of bolt holes are reserved in the upper connecting plates ...

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Номер записи: 8
09-05-2023 дата публикации

Segmented model test device capable of applying non-uniform excitation load

Номер: CN116086747A
Автор: HE CHUAN, GENG PING, WANG QI, WANG TIANQIANG, XIANG CHENYANG, ZHANG YINGBIN, YAO CHAOFAN
Принадлежит:

The invention discloses a segmental model test device capable of applying a non-uniform excitation load, which comprises a driving box, a follow-up box, an elastic supporting bracket, an upper connecting plate, a bottom plate and a flexible connecting module, and is characterized in that the bottom plate is fixed on a vibration table top through bolts, and a groove is formed in the bottom plate for mounting the driving box; the follow-up box is placed on the elastic supporting bracket below the follow-up box; the driving box and the follow-up box are connected through a flexible connecting module, and the follow-up box can rotate in three directions and six degrees of freedom; the driving box and the follow-up box are arranged at an interval to jointly form an integral container for containing a soil sample; upper connecting plates are mounted at the tops of the driving box and the follow-up box, and a plurality of groups of bolt holes are reserved in the upper connecting plates to be suitable ...

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Номер записи: 9