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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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Применить Всего найдено 12. Отображено 12.
15-06-2017 дата публикации

DESALINATION METHOD FOR IMPROVING TOPSOIL OF SALINE-ALKALI LAND BY USING SILT

Номер: AU2017100488A4
Автор: ZHU WEI, BAO JIANPING, XIN PEI, ZHANG HUIWEN, WEI DAIWEI, SHU SHI, LV YIYAN, WU SILIN, Zhu, Wei, Bao, Jianping, Xin, Pei, Zhang, Huiwen, Wei, Daiwei, Shu, Shi, Lv, Yiyan, Wu, Silin
Принадлежит: Madderns Patent & Trade Mark Attorneys

A desalination method for improving topsoil of a saline-alkali land by using silt is disclosed. The method includes the following steps: (a) mixing topsoil of a saline-alkali land with silt, to form a mixed zone with a permeability coefficient of 1.Ox10-6 cm/s to 5.Ox1 0-5 cm/s; (b) building ridges around the mixed zone using silt, irrigating the mixed zone with fresh water for 2 to 4 months, and keeping a water depth of between 10 cm and 15 cm; and (c) planting rice in the mixed zone, and draining and irrigating the rice according to the growth characteristics and needs of the rice. Through mixing of topsoil of a saline-alkali land and silt, a mixed zone with a certain permeability coefficient is formed. In this way, a structure of the topsoil of the saline-alkali land can be improved, the soil fertility is improved, suitable conditions for the growth of rice are created, and a yield of the rice is improved. Moreover, after the structure of the topsoil of the saline-alkali land is improved ...

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Номер записи: 1
30-09-2015 дата публикации

A automatic suction filtration of stifled type of preventing becoming silted up - blow and take off device that is used for quick drainage usefulness of mud

Номер: CN0204671956U
Автор: ZHANG CHUNLEI, WEI DAIWEI, SUN QINGYU, HUO LEI, WU SILIN, WANG SHUNCAI, BAO JIANPING, LI LEI
Принадлежит:

The utility model provides an automatic suction filtration of stifled type of preventing becoming silted up - blow and take off device that is used for quick drainage usefulness of mud, the concentrated technology of vacuum filtration drainage that can be used for dredging mud, water treatment mud, industry mud belongs to engineering and environmental protection field includes vacuum dust -collecting bucket, vacuum filtration unit, dust -collecting bucket drainage system, its characterized in that of, still include suction filtration - blow take off translation unit, with suction filtration - the blow suction tube that takes off translation unit and be connected, suction filtration - blow take off translation unit simultaneously with air compressor, vacuum dust -collecting bucket with hold the mud container and be connected, dust -collecting bucket drainage system and vacuum filtration unit all be connected with the vacuum dust -collecting bucket, it is equipped with the suction filtration ...

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Номер записи: 2
08-06-2017 дата публикации

A DEWATERING METHOD FOR DREDGED SLURRY BASED ON HIGH PERMEABILITY CAKE

Номер: AU2017100487A4
Автор: ZHU WEI, WU SILIN, BAO JIANPING, WEI DAIWEI, ZHANG CHUNLEI, MIN FANLU, Zhu, Wei, Wu, Silin, Bao, Jianping, Wei, Daiwei, Zhang, Chunlei, Min, Fanlu
Принадлежит: Madderns Patent & Trade Mark Attorneys

A dewatering method for dredged slurry which through high permeability cake is disclosed. The method sequentially includes the following steps: (a) adding a flocculant to dredged slurry to form floc-containing transition slurry; and (b) performing vacuum filtration on the transition slurry by using a geotextile as a filtering medium, to form a highly permeable cake on the surface of the geotextile, which could keep vacuum filtration durable and efficient to separate the water from the transition slurry. In the dewatering process, water can be extracted continuously for a long period since the mud cake generated from the formed flocs in the vacuum filtration process which has high permeability, so that not only the geotextile can be prevented from being blocked, but also water is allowed to permeate through the geotextile to achieve continuous dewatering effect. The dewatering method can rapidly reduce slurry volume, greatly improve efficiency, lower the costs, and require smaller operating ...

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Номер записи: 3
02-11-2011 дата публикации

Earth pressure balance/ muddy water pressurization continuously-switching shield construction method

Номер: CN0102230384A
Автор: WEI ZHU, XIAOCHUN ZHONG, FANLU MIN, RUI WANG, JIA ZUO, DAIWEI WEI, SHENGQUAN XIA, HAILING SHI, ZHU WEI, ZHONG XIAOCHUN, MIN FANLU, WANG RUI, ZUO JIA, WEI DAIWEI, XIA SHENGQUAN, SHI HAILING
Принадлежит:

The invention discloses an earth pressure balance/ muddy water pressurization continuously-switching shield construction method. In the method, on the basis of the earth pressure balance shield working mode, the design of switching a spiral soil evacuator into a dredge pipe (capable of controlling pressure), an assorted mud feeding and discharging pump system and a mud preparation, transportation and processing system are added. In the tunnelling process, the method can switch and regulate the working mode according to the variation of a reservoir condition; and when muddy water pressurization shield construction is required and earth pressure balance shield is not suitable, the earth pressure balance shield working mode is switched into the muddy water pressurization shield construction working mode. The earth pressure balance/ muddy water pressurization continuously-switching shield construction method has the advantages that the process flow related in the invention integrates two types ...

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Номер записи: 4
22-08-2023 дата публикации

Underwater butt joint reinforcing method in high-water-pressure strong-permeability stratum

Номер: CN116624157A
Автор: YAO ZHANHU, WEI DAIWEI, ZHANG CHAO, ZHANG YAZHOU, YANG QIN, LI HUI, XU WENLI, SUN JINGXIN, ZHANG LEI
Принадлежит:

The invention provides an underwater butt-joint reinforcing method in a high-water-pressure and strong-permeability stratum, relates to the field of shield construction, is suitable for underwater butt-joint engineering of two large-diameter shield tunneling machines, has high safety for the high-water-pressure and strong-permeability stratum, effectively meets the special working condition that the underwater construction space is limited, and improves the construction efficiency. The method specifically comprises the following steps that 1, at least one circle of radial grouting holes are formed in a shield of a shield tunneling machine, a waterproof curtain is formed on the periphery of the shield tunneling machine through radial grouting, and a closed construction environment is provided for the follow-up process; 2, multiple sets of inclined grouting holes are pre-buried in the shield shell, advanced grouting reinforcement is carried out, and the stratum is improved so as to facilitate ...

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Номер записи: 5
06-08-2014 дата публикации

Excavation face supporting method for shield tunneling machine to open chamber under pressure

Номер: CN103967499A
Автор: ZHU WEI, MIN FANLU, WEI DAIWEI, JIANG TENG, WANG RUI, ZHANG YAZHOU, CHEN XIKUN, ZHANG NING
Принадлежит:

The invention discloses an excavation face supporting method which can form a permeable layer through slurry and then form mud cake. The excavation face supporting method comprises the steps of preparing thin slurry, enabling the thin slurry to permeate into a stratum to form a stable permeable zone to reduce the permeability of the stratum, replacing the thin slurry with dense high-density slurry to form a dense mud cake type slurry film on the surface of the stratum to reduce the breathability of the stratum, finally testing the airtightness of the slurry film, setting the pressure in a pressure chamber when the pressure chamber is opened, reducing the slurry level to be below a maintaining face, supporting an excavation face through compressed air and the like. The shield tunneling excavation face supporting method can effectively guarantee the stability of the excavation face in a high-water-pressure and strong-permeable coarse particle soil layer when the chamber is opened under pressure ...

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Номер записи: 6
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: 7
23-06-2023 дата публикации

Bolt-connected shield tunnel fabricated flue plate structure and construction method

Номер: CN116291715A
Автор: WEI DAIWEI, LI HUI, XU WENLI, YANG QIN, TAO BOWEN, SHI JIA, XUE SHOUBAO
Принадлежит:

The invention provides a shield tunnel assembly type flue plate structure connected through bolts. The shield tunnel assembly type flue plate structure comprises flue plates and cast-in-place brackets. In the longitudinal direction of the tunnel, each flue plate comprises a middle flat plate and flue plate cross beams symmetrically and fixedly arranged at the two ends of the middle flat plate, a sealing gasket is arranged between every two adjacent flue plates and is in threaded connection with the flue plates, continuous cast-in-place brackets are arranged on the inner walls of the two sides of the duct piece in the longitudinal direction of the tunnel, and the cast-in-place brackets on the inner walls of the two sides are continuously arranged in the longitudinal direction of the tunnel. Each flue plate is in lap joint with cast-in-place bracket upper supports on the two sides of the duct piece; pre-embedded sliding grooves of the flue plate are formed in the cast-in-place bracket supports ...

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Номер записи: 8
25-03-2015 дата публикации

River channel reinforced retaining wall structure and construction method thereof

Номер: CN104452667A
Автор: YANG GUI, HAN YUHUI, JIANG YUFENG, CHEN HEDONG, WEI DAIWEI
Принадлежит:

The invention discloses a river channel reinforced retaining wall structure, and belongs to the field of marine traffic engineering. The river channel reinforced retaining wall structure comprises a wall body and geogrids. The geogrids are horizontally laid in the wall body in a layered mode, the layers of geogrids are connected together through vertical composite rivets, and the wall body is directly connected with the geogrids through reinforcing steel bars; filling earth is placed on the geogrids in a filling mode; the composite rivets comprise vertical guide rods, lateral wall connecting rods, top face connecting rods and guide rings. The invention further discloses a construction method of the river channel reinforced retaining wall structure. According to the river channel reinforced retaining wall structure, every two up-and-down layers of geogrids are connected by the adoption of composite rivet structures to form a three-dimensional reinforced structure, friction force and meshing ...

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Номер записи: 9
04-07-2023 дата публикации

Shield tail device for restraining shield tunnel segment from floating upwards and construction method

Номер: CN116378708A
Автор: YANG QIN, XU WENLI, LI HUI, WEI DAIWEI, SHI JIA, TAO BOWEN, XUE SHOUBAO
Принадлежит:

The invention relates to the technical field of shield tunnel construction, in particular to a shield tail device for restraining shield tunnel duct pieces from floating upwards, which comprises a shield tunneling machine, the shield tunneling machine comprises a shield shell, a shield tail is arranged on the shield shell, the duct pieces are assembled in the shield tail, a plurality of grouting openings are formed in the shield tail at intervals along an arc line, and the grouting openings are communicated with the shield shell. A plurality of radial plates are distributed on the upper portion of the end, close to the shield tail, of the shield shell at intervals, a plurality of limiting strips are fixedly connected to the side, close to the segment, of each radial plate, the limiting strips are arranged on the radial plates at intervals in the longitudinal direction, grouting pipelines are arranged in the radial plates, and a plurality of grouting ends are arranged at the tails of the ...

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Номер записи: 10
08-04-2015 дата публикации

Riverway arch retaining wall structure and construction method thereof

Номер: CN104499502A
Автор: LYU XUEFEN, JIANG YUFENG, HAN YUHUI, WEI DAIWEI, CHEN HEDONG
Принадлежит:

The invention discloses a riverway arch retaining wall structure and belongs to the field of traffic and marine traffic engineering. The riverway arch retaining wall structure comprises buttress piers and a retaining wall, the retaining wall is formed by side-by-side connection of a plurality of circular arc wall bodies, two ends of each circular arc wall body are fixed on the buttress piers, circular arc protruding portions point to the earth filling direction, the protruding side of the retaining wall is filled with earth to form an earth-filled layer, and the space between the retaining wall and the earth-filled layer is filled with a rubble layer. Tie bars are arranged in the earth-filled layer horizontally, and one end of each tie bar is connected with the corresponding buttress pier while the other end is fixed through a fixing column. Plastic blind ditches are horizontally arranged in the earth-filled layer layer by layer. The outer side of each plastic blind ditch is coated with ...

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Номер записи: 11
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: 12