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Construction Method of Shallow Buried Tunnel Crossing Ground Fissure Broken Zone

A technology of shallow burial and underground excavation and construction method, which can be used in tunnels, tunnel linings, underground chambers, etc., and can solve problems such as difficult construction.

Active Publication Date: 2018-04-13
中铁二十局集团第五工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But now, there are very few construction materials for reference in the construction of shallow-buried tunnels passing through the broken ground fissure zone, and the construction is difficult

Method used

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  • Construction Method of Shallow Buried Tunnel Crossing Ground Fissure Broken Zone
  • Construction Method of Shallow Buried Tunnel Crossing Ground Fissure Broken Zone
  • Construction Method of Shallow Buried Tunnel Crossing Ground Fissure Broken Zone

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Embodiment Construction

[0060] Such as figure 1 Shown is a construction method for a shallow-buried underground excavation tunnel passing through ground fissures and broken zones. The constructed shallow-buried underground excavation tunnel includes a left-line tunnel 7 and a right-line tunnel 8 arranged on the right side of the left-line tunnel 7. The left-line tunnel 7 and the right-hand tunnel 8 are arranged in parallel, and the two are communicated through a cross passage 9, see figure 2 The constructed shallow-buried underground excavation tunnel is a tunnel passing through the broken zone of ground fissures, and the broken zone of ground fissures is a broken zone with ground fissures; The tunnels 8 are all divided into two tunnel sections through the cross passage 9, and the two tunnel sections are respectively the first tunnel section and the second tunnel section, and the first tunnel section of the left-line tunnel 7 and the right-line tunnel 8 The first tunnel section is located on the sa...

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Abstract

The invention discloses a ground fracture crushed zone passing construction method for shallow-buried tunnel excavation. A constructed shallow-buried excavation tunnel comprises a left line tunnel and a right line tunnel which are communicated through a transverse channel. During construction of the constructed shallow-buried excavation tunnel, the method comprises the steps that 1, transverse channel construction is performed; 2, tunnel construction is performed, wherein the two tunnel sections of the left line tunnel and the right line tunnel are constructed through the transverse channel, the construction is performed in the mode of multiple tunnel sections in the longitudinal extending direction of the tunnel from back to from during construction of any one tunnel section, and the construction of any one tunnel section includes the processes of ground fracture judgement, tunnel excavation and synchronous preliminary bracing construction, concrete protection layer construction, post-cast strip retention judgement, secondary tunnel lining construction and post-cast strip construction. The method includes simple steps and is reasonable in design, convenient to construct, good in construction effect, capable of simply and conveniently completing the shallow-buried tunnel excavation construction process of a ground fracture crushed zone and safe and reliable in construction process.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a construction method for a shallow-buried underground excavation tunnel passing through a broken zone of ground fissures. Background technique [0002] Ground fissure is the abbreviation of ground fissure. It is the cracking of surface rock and soil under the action of natural factors (crustal activity, water action, etc.) or human factors (pumping, irrigation, excavation, etc.), and forms a certain length on the ground. A macroscopic surface damage phenomenon of cracks with wide and wide cracks. Fracture zones are bands of rock broken by haphazard fissures and fissures; fissures may be mineral-filled, have a network of veins, or may roughly correspond to fault zones. The broken zone of ground fissures refers to the broken zone with ground fissures (that is, there are cracks in the ground). [0003] Compared with the open-cut method, the construction of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/14E21D11/10
CPCE21D9/00E21D9/14E21D11/10E21D11/107
Inventor 宁振国梁缄鑫万昌盛曹佳斌李朝成冯艳娜刘晓宁
Owner 中铁二十局集团第五工程有限公司
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