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Loess tunnel construction method

A technology of loess tunnel and construction method, which is applied in the direction of tunnel, tunnel lining, earthwork drilling, etc. to ensure the stability of the tunnel structure, control the settlement of the arch, and solve the effects of early cracking

Inactive Publication Date: 2011-08-03
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still many technical problems unsolved, so a systematic, mature and efficient construction method has not been formed.

Method used

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  • Loess tunnel construction method

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Embodiment Construction

[0038] The construction method of the loess tunnel of the present invention is: "quick excavation, quick support, quick closure, the inverted arch and the secondary lining side wall foundation follow closely, and the secondary lining is applied in due course".

[0039] Quick digging refers to quick excavation.

[0040] Fast support means that the initial support should be constructed in time.

[0041] Fast closure refers to the erection of inverted arch trestles, and the timely implementation of initial support for inverted arches, so that the initial support forms a closed force-bearing whole.

[0042] The follow-up measures of the inverted arch and the secondary lining side wall foundation refer to erecting the inverted arch trestle, backfilling the inverted arch and constructing the low side wall as soon as possible, so that the foundation supporting the upper primary support is changed from point force to surface force The backfilling of the inverted arch also reduces the...

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Abstract

The invention relates to a loess tunnel construction method, which can lower the construction difficulty and ensure the construction safety and the structure stability. The method comprises the following steps: (1) rapidly excavating the tunnel; (2) immediately constructing a primary support; (3) erecting an invert trestle, and constructing a primary support invert in time to make the primary support form a closed integral body; (4) erecting an invert trestle, and carrying out invert backfilling and short wall construction as earlier as possible; and (5) constructing a secondary lining at a proper moment meeting the deformation rule of the loess tunnel.

Description

1. Technical field: [0001] The invention relates to a construction method, in particular to a construction method of a loess tunnel. 2. Background technology: [0002] In the background technology, loess is called "yellow soil" in ancient times, which originated from the color of the land and is a kind of Quaternary sediment. Loess is widely distributed in the world. The total area of ​​loess and loess-like soil distribution in the world is about 13 million square kilometers, accounting for 9.3% of the total land area. my country is also the country with the largest loess distribution area in the world, with a distribution area of ​​640,000 square kilometers, accounting for 6.3% of my country's land area. In the middle reaches of the Yellow River, from the Helan Mountains in the west to the Taihang Mountains in the east, from the Great Wall in the north to the Qinling Mountains in the south, almost all of them are covered by loess, covering an area of ​​about 270,000 square...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/04E21D11/00
Inventor 陈建勋乔雄罗彦斌
Owner CHANGAN UNIV
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