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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.
07-04-2023 дата публикации

Lining structure connecting form for shield underground butt joint and construction method

Номер: CN115929354A
Автор: ZHANG YAZHOU, YANG LINSONG, YAO ZHANHU, LI ZONGPING, ZHAO ZONGZHI, XU HUIBIN, WEI CHI, YAN XIAO, LU MINGFEI, XUE SHOUBAO, XU WENLI, LI HUI, ZHANG LEI, SHI ZHIPENG
Принадлежит:

The invention provides a lining structure connecting form for shield underground butt joint and a construction method. According to the connecting form, angle steel baffles on the inner wall of a shield shell, annular sealing gaskets, steel pipe pieces and retaining steel plates are included. Longitudinal force is provided through a shield tunneling machine jack to abut against the steel pipe piece, the sealing gasket is compressed into the shield tail gap, the sealing gasket and the contact face are extruded to generate contact stress sufficient to resist water pressure, and the purpose of joint water stopping is achieved. According to the sealing gasket, gaps between the segments and a shield shell are blocked through the sealing gasket body, a series of seepage channels such as longitudinal seams of the two annular segments and circular seams between the segments are blocked through the sealing gasket extending part, and the problem that a tunnel segment lining leaks water when the seepage ...

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Номер записи: 1
30-06-2023 дата публикации

Tunnel reinforcement cage sliding in-place device and construction method

Номер: CN116357389A
Автор: LI XUECHUANG, GAO JUNHUA, LU MINGFEI, YANG GUANG, ZENG DECHENG, LI YONGBO, XU WENLI, ZHANG YAZHOU, WEI CHI, ZHANG XIYING
Принадлежит:

The invention relates to the technical field of shield tunnel construction, in particular to a tunnel reinforcement cage sliding in-place device which comprises a tunnel segment, a mid-partition wall, a connecting piece and a reinforcement cage body, the mid-partition wall and the tunnel segment are connected through anchor bolts and concrete, the connecting piece is installed on the tunnel segment and located at the top of the mid-partition wall, and the reinforcing cage body is installed on the mid-partition wall. A groove track is formed in the top of the middle partition wall, the reinforcement cage body comprises reinforcement cage main reinforcements, reinforcement cage stirrups and protective layer cushion blocks, the reinforcement cage main reinforcements are hooped by the reinforcement cage stirrups, and the positions, close to the groove track, of the reinforcement cage stirrups are sleeved with the protective layer cushion blocks. The protective layer cushion blocks are arranged ...

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Номер записи: 2
23-06-2023 дата публикации

Flue plate bracket capable of providing horizontal force and flue plate optimization design method

Номер: CN116291663A
Автор: LU MINGFEI, YAO ZHANHU, ZHANG YAZHOU, WEI DAIWEI, YANG QIN, XU WENLI, LI HUI, ZENG DECHENG, ZHANG XIYING, WEI CHI, YAN XIAO
Принадлежит:

The invention provides a flue plate bracket capable of providing horizontal force and a flue plate optimization design method, belongs to the technical field of tunnels, breaks through the constraint of a traditional structure, creatively designs a flue plate into an arch structure, and adaptively, flue plate brackets with the same height are respectively arranged in the radial direction of a tunnel. The horizontal distance between the flue plate brackets is not larger than the horizontal distance between the two ends of the flue plate, the two sides of the flue plate make contact with the flue plate brackets on the two sides respectively, horizontal thrust is provided for the flue plate, the structure is mainly changed from bending stress to axis stress, the material characteristic that concrete is good in compression performance is fully utilized, and the structure is simple, convenient and practical. The structure stress state is greatly improved, the structural system is optimized, ...

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Номер записи: 3
25-07-2023 дата публикации

Similar case determination method and device, equipment, medium and program product

Номер: CN116484828A
Автор: LIU ZHENYU, LU MINGFEI, SHI JIANZHONG, KANJI
Принадлежит:

The invention relates to a similar case determination method and device, equipment, a medium and a program product. The method comprises the following steps: acquiring a plurality of case semantic vectors of a to-be-compared case; respectively determining a similarity score between each case semantic vector of the to-be-compared case and each case semantic vector of at least one reference case; based on the similarity scores, similar cases are determined from the at least one reference case, the similarity mean value determined based on target similarities is larger than or equal to a first threshold value, and the ratio of the number of the target similarities to the total number of the case semantic vectors of the to-be-compared cases and the similar cases is larger than or equal to a second threshold value; the target similarity is determined for each case semantic vector of the to-be-compared case and has a maximum similarity score with the case semantic vector of the similar case, ...

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Номер записи: 4
06-06-2023 дата публикации

Construction method for shield in-ground butt joint in strong water-permeable sand stratum

Номер: CN116220703A
Автор: YAO ZHANHU, ZHANG YAZHOU, LU MINGFEI, XU WENLI, WANG YISHENG, LI HUI, LIANG YUQIANG, ZHANG LEI, SHI ZHIPENG, QIN LE, LI JIAN, ZENG DECHENG, ZHANG XIYING, WEI CHI, YAN XIAO, WEI DAIWEI, WEI TAO, WANG YUYANG, LYU ZHIJIA, WANG JINLI, JI MINGRUI, LI JUNQI, TAO BOWEN, LIU FUYOU, DU ZHENFANG, YANG QIN, SHI JIA, SHI GUOQING, WANG YANG, CAI QI, CHI YI, LIAN DIANCHAO, GE TONGHAO, ZHAO WENQI, XU YONGSHENG, MA RUICHEN, WANG WANYU
Принадлежит:

The invention belongs to the technical field of shield tunnel engineering, and particularly relates to a construction method for shield in-ground butt joint in a strong permeable sand stratum. Comprising the following steps that a preceding shield tunneling machine is shut down for pressure maintaining and peripheral stratum grouting reinforcement, a following shield tunneling machine is subjected to advanced grouting reinforcement, the posture of the following shield tunneling machine is adjusted, and the butt joint position of the two shield tunneling machines is subjected to freezing reinforcement in a soil layer subjected to grouting reinforcement. According to the construction method, the problems that in the strong permeable sand stratum, a single construction method is used for stratum reinforcement, the requirement for shield in-ground butt joint is difficult to meet, and the shield posture in the strong permeable sand stratum is difficult to adjust are solved, the stratum reinforcement ...

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Номер записи: 5
06-06-2023 дата публикации

Middle partition wall reinforcing method under single-side soil filling condition of double-hole air shaft

Номер: CN116220693A
Автор: YAO ZHANHU, LYU JIRUI, ZHANG YAZHOU, ZHANG XIYING, HE JIANGUANG, WEI CHI, LUO CHUNGUANG, CHENG XIAOQING, SUN CHENGUANG, SUN SHULIANG, LU MINGFEI, LIANG HAO
Принадлежит:

The invention discloses a mid-partition wall reinforcing method under the condition of single-side soil filling of a double-hole air shaft, a plurality of holes are distributed in a mid-partition wall designed according to a vertical stress component, and the reinforcing method comprises the following steps that S1, the bottom constraint range of the mid-partition wall is enlarged; s2, the strength of the wall body at the hole of the mid-partition wall is improved; and S3, locally thickening the middle partition wall. On one hand, the influence on the non-filling side of the mid-partition wall is effectively avoided by enlarging the bottom constraint range of the mid-partition wall, blocking the holes in the mid-partition wall and locally thickening the mid-partition wall; and on the other hand, under the condition of single-side soil filling, various stress data of the middle partition wall are accurately calculated according to actual working conditions, so that necessary reinforcement ...

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Номер записи: 6
18-04-2023 дата публикации

Method for optimizing enzyme-assisted extraction of radix tetrastigme total triterpenes based on response surface method

Номер: CN115969917A
Автор: FAN SHIMING, XU WEN, XU HUILONG, LIN YAO, LU MINGFEI, YANG NAN, YE MIAO, XU WEI
Принадлежит:

The invention relates to the technical field of separation of active ingredients of traditional Chinese medicines, in particular to a method for optimizing enzyme-assisted extraction of total triterpenes of radix tetrastigme based on a response surface method. According to the method, based on a Box-Behnken response surface method, the mass concentration of Sebienic acid is taken as a response value, four response variables including the enzyme addition amount, the enzymolysis pH value, the enzymolysis temperature and the enzymolysis time are selected, the optimal point of a single-factor experiment is taken as the center, the upper portion and the lower portion of the center are each provided with a level value to serve as the response surface level, multiple regression analysis is carried out on data of all the response variables, and the optimal point of the single-factor experiment is obtained. A regression equation is obtained, and optimal enzymolysis conditions are obtained: cellulase ...

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Номер записи: 7
07-07-2023 дата публикации

Evaluation method for service life of mud film on excavation face of long-time shutdown slurry shield

Номер: CN116398242A
Автор: ZHANG YAZHOU, JIANG JIANGSU, YAO ZHANHU, MIN FANLU, LI HUI, ZHU WENCHAO, XU WENLI, WEI CHI, WANG SHIYU, ZHANG XIYING, LU MINGFEI, YAN XIAO
Принадлежит:

The invention discloses a method for evaluating the service life of a mud film on an excavation face of a long-time shutdown slurry shield, and solves the technical problem that no appropriate mud film service life evaluation standard exists in the prior art for evaluating the service life of the mud film. According to the method, main indexes influencing the service life of the mud film under three working conditions, namely a shutdown pressure maintaining working condition, a shutdown circulating working condition and a shutdown non-circulating working condition, are mainly included, the evaluation standard of the service life of the mud film is obtained, and stable maintenance of an excavation face in a long-time shutdown state is facilitated.

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Номер записи: 8
18-08-2023 дата публикации

Shield body inner lining construction method during river bottom butt joint

Номер: CN116607953A
Автор: ZHANG YAZHOU, ZHANG XIYING, LI HUI, YAO ZHANHU, XU WENLI, ZENG DECHENG, WEI TAO, XU MINGYUAN, LU MINGFEI, YANG QIN
Принадлежит:

The invention provides a shield body inner lining construction method during river bottom butt joint, and relates to the field of shield construction, an integral lining plays a role in supporting a shield body and preventing the shield body from instability and deformation, and meanwhile, freezing calandria arrangement is omitted, and the shield body inner lining construction method specifically comprises the following steps that 1, after two shield tunneling machines are in butt joint with the river bottom, a set of shield oil cylinders are taken back, and a set of shield oil cylinders are taken back; a circle of retaining plate is welded on the last circle of shield segments of the shield construction of the two shield tunneling machines respectively; 2, a local lining ring beam is poured in the corresponding position of the retaining plate; 3, a shield oil cylinder is dismantled, and a shield square beam and a shield rib plate are cut off; 4, three rows of freezing orifice pipes are ...

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Номер записи: 9