Antiicing special shaped protective block-umbrella-shaped body for artificial island
A technology of face protection block and artificial island, applied in the direction of coastline protection, etc., can solve the problems of face protection collapse, difficult construction, endangering the safety environment, etc., and achieve the effect of low price, convenient structural design and good effect.
Inactive Publication Date: 2007-11-07
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
However, in the northern winter, the shallow sea freezes due to the temperature drop and forms a large range of sea ice blocks. Under the action of wind and waves, the ice blocks will move and impact the artificial island armor and climb up on the armor. In severe cases, The ice climbs to the island surface to impact and destroy the working and living areas on the island surface
At this time, the impact force of sea ice is the main impact force, and its damage is far greater than that caused by sea conditions such as waves and currents. It is designed considering the wave to control the load, and then improved according to the experience of the designer. This design cannot meet the environmental requirements in severe cold areas, and the design is not reasonable enough. The armor often collapses in large and small areas, seriously jeopardizing the Safe environment for staff working on the island
In order to solve this problem, the general method in China is to use a larger heterogeneous block than the design, so that the ice will be damaged during the climbing process. This design is costly, the volume and weight of the heterogeneous block are large, and the construction is difficult.
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[0011] As shown in Figure 1, n pieces of heterogeneous blocks are gradually embedded and connected to each other from the bottom to the top according to the structural form of the artificial island anti-ice armor. The blocks should be closely connected, and the maximum gap should not exceed 2cm. Because there is an angle difference of b between the upper and lower sides of a heterosexual block, b<10°, when n heterosexual blocks are connected, the bottom and top of the structure have an angle difference between nb, and nb is the largest in general 90°, according to the design needs to see the magnification of 5°, the minimum is not less than 80°.
[0012] In Fig. 2 and Fig. 3, the main working surfaces of the heterosexual block are the upper side 4 and the lower side 5, and there is an angle difference b between the side 4 and the side 5, and the maximum does not exceed 10°. There is a straight through hole 1 in the middle of the block, R is the long side of the working surface...
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The present invention relates to one kind of umbrella-shaped blocks, which have irregular shapes and may be combined to form ice resisting slope protecting face for oil extracting artificial island in shallow sea. In extreme ice condition, the slope protecting face comprising the umbrella-shaped blocks can break and turn over large ice block to protect the artificial island. The present invention has excellent artificial island protecting effect.
Description
technical field [0001] The invention relates to a new anti-icing block-umbrella body of an artificial island used for shallow sea oil recovery, which is mainly used to resist large flat ice under very low temperature conditions. Background technique: [0002] At present, in shallow seas, artificial islands are used partly for subsea oil production in China. Sand and gravel artificial island is the simplest and most commonly used structural form in the artificial island series. The known sand and gravel artificial island is mainly composed of a protective surface, an island surface, a bottom protection, a prism, a cushion and a wave-resistant parapet. In general, the main impacts it receives come from waves, ocean currents, its own load and operating load, and the impact of sea ice is not the main impact force. However, in the northern winter, the shallow sea freezes due to the temperature drop and forms a large range of sea ice blocks. Under the action of wind and waves, t...
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IPC IPC(8): E02B3/14
Inventor 艾志久舒仕勇
Owner SOUTHWEST PETROLEUM UNIV