Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 8. Отображено 8.
27-06-2023 дата публикации

Water level measurement error analysis and control method and system

Номер: CN116342965A
Принадлежит:

The invention discloses a water level measurement error analysis and control method and system which are applied to the technical field of image processing, and the method comprises the steps: obtaining a steam drum water level image; through coarse positioning of the first water level image, an area containing a water level gauge and an area for error identification are determined; the water level of the steam-containing area and the water level of the saturated water area are positioned through fine positioning; establishing a gray level co-occurrence matrix; analyzing a local mode and an arrangement rule of the first water level image in the gray level co-occurrence matrix; mapping the features of the first water level image to a high-dimensional feature space through a nonlinear function, and constructing a classification super-plane to classify the first water level image; acquiring a timestamp of the steam drum water level, outputting an analog signal, and converting the analog signal ...

Подробнее
16-11-2011 дата публикации

Method for constructing double-arch tunnel by rebuilding and expanding existing single-hole tunnel

Номер: CN0101737061B
Принадлежит:

The invention relates to a method for constructing a double-arch tunnel by rebuilding and expanding an existing single-hole tunnel. The technical problem to be solved by the invention is to provide a method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel, which adopts a ' middle pilot hole, the existing tunnel and a right hole' three pilot pit construction scheme, enlarges construction face and reduce excavation face and surrounding rock disturbed zone. To solve the technical problem, the invention adopts a technical scheme that the method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel comprises the following steps: 1.1 constructing the middle pilot hole parallel to the existing single-hole tunnel on one side of the existing single-hole tunnel and completing supporting construction; 1.2, constructing a left hole by sequence and zone on the basis of the existing single-hole tunnel and ...

Подробнее
19-03-2014 дата публикации

End-free reinforcing shield receiving structure and receiving method

Номер: CN103643961A
Принадлежит:

The invention relates to an end-free reinforcing shield receiving structure and receiving method. The end-free reinforcing shield receiving structure and receiving method are safe, efficient, and low in construction risk. According to the technical scheme, the structure comprises a shield receiving well which is arranged at the outer side of a hole and is provided with a receiving well surrounding protecting structure and a receiving well structural wall. The end-free reinforcing shield receiving structure is characterized in that a cubic plain concrete block is poured by covering the hole inside the shield receiving well, a set of slip casting pipes are buried in the hole inside the plain concrete block in advance, one ends of the slip casting pipes penetrate through the two-layer surrounding protecting structure and enter a tunnel, the other ends of the slip casting pipes are bent by 90 degrees, pipe openings are cocked up to be exposed out of the plain concrete block, a set of long-pipe ...

Подробнее
12-03-2014 дата публикации

Neighborhood tunnel middle clamping rock strengthening method

Номер: CN103628884A
Принадлежит:

The invention relates to a neighborhood tunnel middle clamping rock strengthening method to solve the problems that a traditional strengthening method is complex in processes and relatively slow in schedule. According to the technical scheme, the neighborhood tunnel middle clamping rock strengthening method is characterized by comprising the following steps that firstly, advance pipe-shed supports are established before a tunnel is excavated and are arranged inside a rock on the periphery of the tunnel, the advance pipe-shed supports extend to the arch springing position close to the middle clamping rock from the spandrel position far away from the middle clamping rock through the vault, and all large-pipe shed supports are arranged in the axial direction of the tunnel; secondly, the tunnel is partially excavated and supported, and before the soil body close to the middle clamping rock is excavated, small guiding pipes are filled with thick liquid, secondary reinforcing is carried out, ...

Подробнее
09-12-2015 дата публикации

Shallow stratum of burying under leading reinforcement of undercut tunnel warp testing system

Номер: CN0204851286U
Принадлежит:

The utility model relates to a shallow undercut tunnel stratum of burying warp the testing system field, aims at providing shallow stratum of burying under leading reinforcement of undercut tunnel warp testing system. This shallow stratum of burying under leading reinforcement of undercut tunnel warp testing system includes model groove built -in system, actuating system, outside monitoring system, and model groove built -in system includes model groove, tunnel model, and tunnel model's main part is used for arranging at the model inslot, and the residual space of model inslot portion is used for the layering to pack the soil sample, and the actuating system adopts the motor to realize that outside monitoring system includes digital photography camera, LVDT displacement sensor. The utility model discloses can plan shallow burying through the back demould who removes the panel and secretly dig release of stress under the drilling depth, change, retreat speed and an earth's surface sedimentation ...

Подробнее
02-09-2015 дата публикации

Large-span tunnel excavation method for upper soft and lower hard compound strata

Номер: CN104879131A
Принадлежит:

The present invention relates to a large-span tunnel excavation method for upper soft and lower hard compound strata. The present invention aims at providing a large-span tunnel excavation method for upper soft and lower hard compound strata so as to ensure large-span tunnel construction safety for the upper soft and lower hard compound strata, accelerate the construction progress and shorten the construction period. The technical scheme is that a tunnel is divided into upper and lower steps for excavation by the method, and the steps are as follows: a, determining a boundary of the upper soft and lower hard strata of an excavation surface according to geological prospecting data; b, constructing the upper step by using the center diaphragm method; c, constructing the lower step by using the method of reserving core soil; d, lagging the lower step with 2-3m headings at two sides; e, arranging earthwork cloth and an EVA waterproof board on a surface of a lower step inverted arch preliminary ...

Подробнее
18-11-2015 дата публикации

Tunnel portal faces upward on limit sloping catch water drain structure

Номер: CN0204781274U
Принадлежит:

The utility model relates to a tunnel portal faces upward on limit sloping catch water drain structure. The utility model aims at providing a tunnel portal faces upward on limit sloping catch water drain structure to phase reaches reduces construction cost, improvement efficiency of construction, simple and convenient safe mesh. The utility model provides a: tunnel portal faces upward on limit sloping catch water drain structure is applied to hard rock condition, tunnel mouth limit, faces upward sloping opening line and has basement rock face, its characterized in that outward: on the limit, face upward sloping opening line outside 3 -5m department carry out plain noodles rock mass chisel hair to the basement rock face or broken rock mass chisel removes, arrange in the basement rock face that mortar stock and one end expose to exerted mortar stock founds mould concreting catch water drain ditch body for the joint bar. The utility model is suitable for an it is waterproof that the side slope ...

Подробнее
16-06-2010 дата публикации

Method for constructing double-arch tunnel by rebuilding and expanding existing single-hole tunnel

Номер: CN0101737061A
Принадлежит:

The invention relates to a method for constructing a double-arch tunnel by rebuilding and expanding an existing single-hole tunnel. The technical problem to be solved by the invention is to provide a method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel, which adopts a ' middle pilot hole, the existing tunnel and a right hole' three pilot pit construction scheme, enlarges construction face and reduce excavation face and surrounding rock disturbed zone. To solve the technical problem, the invention adopts a technical scheme that the method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel comprises the following steps: 1.1 constructing the middle pilot hole parallel to the existing single-hole tunnel on one side of the existing single-hole tunnel and completing supporting construction; 1.2, constructing a left hole by sequence and zone on the basis of the existing single-hole tunnel and ...

Подробнее