A spiral hidden excavation cable tunnel structure
A cable tunnel and spiral technology, which is applied in the field of spiral underground excavation cable tunnel structures, can solve the problems of more waste of underground space, long construction period and large construction scope, and achieves improved reliability, saving underground space, and convenience. The effect of maintenance work
Active Publication Date: 2022-04-29
重庆电力设计院有限责任公司
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Problems solved by technology
In areas with sudden steep slopes and great height differences, two methods are currently used to solve the height difference problem: the first is to connect the cable tunnels up and down the steep slope through vertical shafts, which forms a cable tunnel The shape of the vertical shaft in the middle is 10m short and 80-90m high. The risk of construction operation is relatively high, and the physical requirements for personnel inspection and maintenance are high. bring hidden dangers; the second is to connect the cable tunnels up and down the steep slope by means of long-distance changing slopes farther away from the cable tunnel on the steep slope, and use the changing slope to solve the problem of great height difference. The buried depth of the cable tunnel is relatively large, and the length of the cable tunnel is long to ensure the smooth connection of the line shape. The tunnel excavation technology is often used. Considering multiple construction surfaces and ventilation sections, corresponding construction wells need to be added. The ground occupies a large area of construction, and the underground More space waste, long construction period and high investment
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[0019] It should be noted that the orientation words "upper, lower, horizontal, and vertical" appearing in this article refer to figure 1 Up, down, horizontal and vertical directions. The orientation words appearing in this article are established based on the customary usage of those skilled in the art and the drawings in the specification, and their appearance should not affect the protection scope of the present invention.
[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Please refer to figure 1 and figure 2 , figure 1 A structural schematic diagram of the spiral underground excavation cable tunnel structure provided by the present invention; figure 2 It is a vertical cross-sectional view of the spiral underground excavation cable tunnel structure provided by the...
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The present invention provides a spiral concealed excavation cable tunnel structure, which includes a cable tunnel on a steep slope and a cable tunnel below a steep slope. The cable tunnel and the multi-turn spiral cable tunnel of the cable tunnel under the steep slope. This application uses a multi-turn spiral cable tunnel to realize the connection between the cable tunnel on the steep slope and the cable tunnel on the steep slope, which solves the problems of stress concentration, plastic stretching, outer sheath rupture and other damage and deformation problems during cable laying and operation, and improves the power grid. operational reliability.
Description
technical field [0001] The invention relates to the technical field of cable construction, and more specifically relates to a spiral concealed excavation cable tunnel structure. Background technique [0002] With the rapid development of the city, the overhead transmission lines that originally occupied the above-ground space have developed into the underground space, and the cable tunnel has become the new normal of the urban power grid. Especially in mountainous areas, the construction of cable tunnels needs to cross mountains and ridges. In areas with sudden steep slopes and great height differences, two methods are currently used to solve the height difference problem: the first is to connect the cable tunnels up and down the steep slope through vertical shafts, which forms a cable tunnel The shape of the vertical shaft in the middle is 10m short and 80-90m high. The risk of construction operation is relatively high, and the physical requirements for personnel inspecti...
Claims
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IPC IPC(8): H02G9/08
CPCH02G9/08
Inventor 王金鑫喻建波杨力武田良陈风樵陈焰周哲胡泽友
Owner 重庆电力设计院有限责任公司