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 6. Отображено 6.
09-05-2023 дата публикации

Photovoltaic power generation pile foundation construction method

Номер: CN116084395A
Принадлежит:

The invention relates to the technical field of photovoltaic power generation, in particular to a construction method of a photovoltaic power generation pile foundation, and aims to relieve the technical problems that a galvanized steel pipe is corroded and rusted and the photovoltaic pile foundation is difficult to transport during construction of the photovoltaic pile foundation in related technologies. The photovoltaic power generation pile foundation construction method comprises the steps that S1, pile foundation hole forming is conducted; s2, a reinforcement cage is placed in the pile foundation hole formed in the step S1; s3, concrete is poured into the pile foundation hole to a preset height, and a filling layer is formed; and S4, the bottom end of the embedded pipe is inserted into the reinforcement cage to make contact with the horizontal plane of the filling layer. When the photovoltaic power generation pile foundation construction method is adopted, the fixing cage and the embedded ...

Подробнее
19-08-2015 дата публикации

Industrial waste residue-doped water-permeable concrete, and production method thereof

Номер: CN104844082A
Принадлежит:

The invention discloses an industrial waste residue-doped water-permeable concrete and a production method thereof, and belongs to the technical field of concrete. The industrial waste residue-doped water-permeable concrete comprises, by mass, 20 to 30 parts of fly ash, 5 to 12 parts of silica fume, 10 to 15 parts of acetylene sludge, 25 to 35 parts of cement, 270 to 290 parts of a gap-graded aggregate, 23 to 28 parts of water, and 0.8 to 1.2 parts of a water reducer. According to the production method, the raw materials above are subjected to a series of operation such as stirring, vibrating, and pressing so as to obtain the industrial waste residue-doped water-permeable concrete at last. The industrial waste residue-doped water-permeable concrete is excellent in permeability performance and freezing resistance, high in compressive strength, excellent in durability, and low in cost.

Подробнее
30-12-2015 дата публикации

Leveling ruler pad

Номер: CN0204924232U
Принадлежит:

The utility model relates to a leveling ruler pad, including ruler pad main part and locating piece, the ruler pad main part is tetrahedron, is equipped with the locating piece of surface for the sphere on its 4 summits respectively, tetrahedron's the length of side is 100-200mm, and the diameter of the spheroid or the ball addendum cone body is 10-30mm, be equipped with the link in the ruler pad main part. The ruler pad main part is the hollow body structure, and the locating piece is the spheroid or the ball addendum cone body. Leveling ruler pad adopts the tetrahedron structure, always has a summit upwards after placing at will, has the function of automatic alignment promptly, and it is very convenient to use, can alleviate the intensity of labour of survey crew greatly, improves measurement of efficiency, the ruler pad main part adopts hollow structure, and it is little to conduct oneself with dignity.

Подробнее
23-06-2023 дата публикации

Double-stand-column photovoltaic support suitable for being installed in east-west large-gradient mountain land

Номер: CN116317861A
Принадлежит:

A double-stand-column photovoltaic support suitable for being installed on a large-gradient mountain land in the east-west direction comprises a plurality of sets of photovoltaic panels installed on purlines, the purlines are connected with oblique beams through purline supports, the purlines are arranged in the east-west direction, the oblique beams are arranged in the north-south direction, the purlines are connected through middle braces, the outer rings of the middle braces are sleeved with supporting rods, and the outer rings of the middle braces are sleeved with the supporting rods. Stand columns are arranged at the front end and the rear end of the bottom of the oblique beam, and an inter-column support is arranged between every two adjacent stand columns; the upper ends of the inclined struts are fixed with the inclined beams through bolts, and the lower ends of the inclined struts are fixed on the stand columns through hoops; the stand column is connected with the oblique beam ...

Подробнее
18-04-2023 дата публикации

Implementation method for simultaneously recovering upheaval deformation and horizontal deformation of tunnel

Номер: CN115977180A
Принадлежит:

The invention discloses an implementation method for simultaneously recovering upheaval deformation and horizontal deformation of a tunnel. The implementation method comprises the steps that before a foundation pit is excavated, numerical simulation is conducted to obtain the position and size of a vertical grouting hole and the position and size of an oblique drill hole, located below an existing tunnel, of an unloading hole area; preparing a grouting device and a reamer bit; drilling holes; a grouting device is inserted into each vertical grouting hole; excavating a foundation pit on the inner side of the underground diaphragm wall, observing displacement monitoring equipment mounted on monitoring points on the inner wall of the existing tunnel and a track bed, if a certain ring segment generates displacement and deformation, grouting in a vertical grouting hole in a position corresponding to the ring segment, and grouting in a vertical grouting hole in a position corresponding to the ...

Подробнее
04-02-2015 дата публикации

Method for measuring gradient of chimney

Номер: CN104330073A
Принадлежит:

The invention relates to a method for measuring the gradient of a chimney. The method comprises the following steps: (1) selecting an observation station point and an orientation point on the spot; (2) arranging a laser total station at the observation station point and measuring the three-dimensional space coordinates with the points being not less than 5 at the edges of laser scanning oval cross sections of the top and the bottom of the chimney in a laser scanning mode respectively; (3) plotting the measured three-dimensional space coordinate points to form a diagram and obtaining the projection coordinates of the top and bottom observation points of the chimney; (4) obtaining the coordinates of the central points of the oval cross sections of the top and the bottom of the chimney by use of a formula; and (5) connecting the two central points to obtain a vector line segment and obtaining the inclination orientation and the inclination amount of the measured chimney by checking attributes ...

Подробнее