A Construction Method of Shallow Buried Bias Asymmetric Arch Protection

A construction method and asymmetrical technology, applied in earthwork drilling, shaft equipment, wellbore lining, etc., can solve problems such as inability to reduce the lateral pressure of mountain bias pressure, construction method not suitable for bias pressure areas, and tunnel lining encroaching on clearance, etc. Achieve less risk, reasonable structure and size design, and good anti-bias effect

Active Publication Date: 2019-08-13
CHINA RAILWAY 16TH BUREAU GRP 5TH ENG +1
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Problems solved by technology

[0002] At present, shallow buried excavation of tunnels (shallow buried depth) exists in the form of open cut and concealed excavation, but the construction method is not suitable for biased areas. This product cannot reduce the lateral pressure caused by the mountain bias. effect, prone to lining cracking, and the overall bias of the lining, causing the tunnel lining to encroach on the clearance during operation

Method used

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  • A Construction Method of Shallow Buried Bias Asymmetric Arch Protection
  • A Construction Method of Shallow Buried Bias Asymmetric Arch Protection

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0029] Such as Figure 1-2 As shown, a shallow-buried bias-pressure asymmetrical arch protection method, wherein the two ends of the asymmetrical arch protection arch are inconsistent in height from the horizontal plane includes the following steps:

[0030] S1: Build a water intercepting gutter 5 meters away from the excavation line of the side slope of tunnel 1, and divert the water flow in the intercepting gutter to a natural ditch. The excavation section of tunnel 1 is 114m 2 ~140m 2 ; ...

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Abstract

The invention discloses a construction method for a shallow-buried partial-pressed non-symmetrical support arch. The construction method comprises the steps of water-intercepting gutter constructing, non-symmetrical support arch foundation constructing, non-symmetrical support arch constructing and cave-top backfilling. According to the construction method for the shallow-buried partial-pressed non-symmetrical support arch, the construction method is simple, the construction steps are closely linked, and the design of arranged positions, structures and sizes of the tunnel support arch and pile foundations are reasonable; the construction method has the advantages that construction is convenient and fast; and the effect of partial-pressure resistance is good, risks brought by shallow-depth and partial pressure of a tunnel to safety of railway operation can be reduced effectively.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering shallow burial excavation, in particular to a shallow burial bias pressure asymmetric arch protection construction method. Background technique [0002] At present, shallow buried excavation of tunnels (shallow buried depth) exists in the form of open cut and concealed excavation, but the construction method is not suitable for biased areas. This product cannot reduce the lateral pressure caused by the mountain bias. As a result, cracking of the lining is prone to occur, and the overall bias of the lining will cause the tunnel lining to encroach on the clearance during operation. Contents of the invention [0003] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a shallow-buried bias-voltage asymmetric arch protection construction method, which can overcome the above-mentioned deficiencies in the prior art. [0004] For realizing abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/15
CPCE21D11/15
Inventor 马栋刘春辉王传宗吕志军吕秀华王浪峰谭朝阳何旭东雷保珂林少军杨洪飞赵生
Owner CHINA RAILWAY 16TH BUREAU GRP 5TH ENG
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