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Massive hollow concrete structures for backfilling of large cavities

A hollow concrete, large-volume technology, used in filling, earthwork drilling, shaft equipment, etc., can solve the problems of high cost and large amount of engineering, and achieve the effects of protecting the environment, reducing engineering costs, and reducing the amount of concrete backfill.

Active Publication Date: 2016-09-21
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology

However, the masonry backfill scheme has a large amount of work and high cost. How to reduce the project cost, save masonry, protect the environment, and at the same time ensure the safety of the large-volume concrete backfill structure has become a key technology for tunnel design and construction through large cavities.

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  • Massive hollow concrete structures for backfilling of large cavities
  • Massive hollow concrete structures for backfilling of large cavities

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing.

[0013] After safety and technical and economical comparisons, at present, large cavities without drainage requirements in the tunnel base mostly use concrete backfill structures, but the amount of concrete work is large, the cost of the project is high, and the volume deformation and cracking caused by the hydration heat of large-volume concrete cement may affect the The safety and normal use of the tunnel structure; how to solve the problem of large-volume concrete backfill safely, economically and conveniently has attracted more and more attention and attention, and the structure of reducing the large-volume concrete backfill masonry has become a key technology for the design and construction of tunnels through large cavities .

[0014] refer to figure 1 with figure 2 , the large-volume hollow concrete structure used for backfilling large-scale cavities in the present ...

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Abstract

The large-volume hollow concrete structure used for backfilling large-scale cavities can minimize the amount of concrete while ensuring the safety and reliability of the structure. It includes a backfill concrete body (2) filled between the outer wall of the tunnel lining (1) and the rock wall of a large cavity. Vertical holes (3) are laid out in the backfill concrete body (2) along the horizontal and vertical intervals. Concrete transverse connecting plates (4) are arranged at vertical intervals toward the holes (3).

Description

technical field [0001] The invention relates to the fields of railways, highways and municipal engineering, in particular to a large-volume hollow concrete structure used for backfilling large-scale cavities. Background technique [0002] With the vigorous development of the national economy and transportation, in order to facilitate the travel of the general public, high-speed rail and expressways are becoming more and more popular, and safety and speed are getting more and more attention. During the construction of high-speed railway or expressway tunnels, due to the limitations of complex geology, terrain conditions and the current level of survey technology, as well as the limitation of the radius of the line selection curve and the distribution of existing structures around the city, the tunnel will pass through some faults , karst cavities, goafs and other unfavorable geological areas. In my country's Guangxi, Guizhou, Yunnan and other karst-developed areas, tunnels i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E02D17/18
Inventor 李维巩江峰张海波刘鹏张慧玲王宏超冉前先张东卿
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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