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Deformation control construction method for shallow-buried underground excavation foundation of power tunnel in cobble stratum

A technology for power tunnels and foundation deformation, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problem that shallow buried excavation cannot meet the requirements of pebble strata, and achieve the effect of improving hole forming efficiency and pile foundation quality.

Active Publication Date: 2020-05-08
CHINA MCC5 GROUP CORP
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Problems solved by technology

[0007] In order to solve the problem that the existing shallow buried excavation construction cannot meet the requirements of pebble strata, the present invention provides a foundation deformation control construction method for shallow buried buried excavation of power tunnels in pebble stratum

Method used

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  • Deformation control construction method for shallow-buried underground excavation foundation of power tunnel in cobble stratum
  • Deformation control construction method for shallow-buried underground excavation foundation of power tunnel in cobble stratum
  • Deformation control construction method for shallow-buried underground excavation foundation of power tunnel in cobble stratum

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the embodiments, and the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other used embodiments obtained by persons of ordinary skill in the art without creative efforts all belong to the protection scope of the present invention.

[0042] In conjunction with the accompanying drawings, a construction method for controlling deformation of a shallow buried excavation foundation of a pebble formation electric tunnel according to the present invention, a construction method for controlling deformation of a shallow buried excavation foundation for a pebble formation power tunnel, including a dewatering well construction process and an electric power tunnel construction process, The construction process of the dewatering well should reduce the groundwater level in the pebble layer area to below 0.5m at ...

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Abstract

The invention belongs to the technical field of power tunnel construction, discloses a deformation control construction method for a shallow-buried underground excavation foundation of a power tunnelin the cobble stratum, and aims to solve the problem that the existing shallow-buried underground excavation construction cannot meet the requirement of the coble stratum. Through the adoption of thedeformation control construction method for the shallow-buried underground excavation foundation of the power tunnel in the cobble stratum, a stratum area constructed by dense cobble stratums can be effectively avoided. Rocks are complex in composition and different in particle sizes, and even include boulders and solid rock stratums, the underground water volume is large, and even local areas have the phenomena of diameter expansion and hole collapse in the presence of cavities, so that the method effectively improves the pore formation efficiency and the pile base quality.

Description

technical field [0001] The invention belongs to the technical field of power tunnel construction, and in particular relates to a construction method for controlling deformation of a shallow-buried subsurface excavation foundation of a pebble formation power tunnel. Background technique [0002] The application of power tunnels in developed countries abroad has been very extensive, and it has also been greatly promoted in developed areas such as my country's coastal areas, but it is not widely used in undeveloped areas such as the west of my country. [0003] With the transformation of my country's economic growth mode, the standards of urban planning are getting higher and higher, and the forward-looking is becoming more and more prominent. There will be more and more construction of comprehensive utility corridors and power tunnels. The old urban area is more suitable for the construction of power tunnels because the surrounding buildings and municipal facilities have been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21D11/14E21D11/18E21D11/38E21F16/02E21F15/00E21D21/00
CPCE21D11/00E21D11/105E21D11/14E21D11/18E21D11/38E21F16/02E21F15/005E21D21/00
Inventor 李飞
Owner CHINA MCC5 GROUP CORP
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