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Construction method for underneath passing of existing railway through three-hole highway tunnel

A construction method and existing railway technology, applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as road and railway tunnel construction, improve travel efficiency and reduce traffic accidents

Inactive Publication Date: 2021-11-09
赵红刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a construction method for a three-hole highway tunnel passing through an existing railway, which has the advantages of highway and railway tunnel construction, and solves the problems of highway and railway tunnel construction

Method used

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Examples

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Effect test

Embodiment 1

[0029] Embodiment 1: A construction method for passing through an existing railway under a three-hole highway tunnel, comprising the following steps:

[0030] S1. The construction adopts the drilling and blasting method to blast the two main holes and the intermediate pilot hole. In step S1, the drilling and blasting method is a construction method that uses explosive blasting to break the rock mass and open the cavern. S1 The main hole is treated and reinforced The distance between the working face and the unfavorable geological zone shall not be less than 10m;

[0031] S2. After the assembly and commissioning of the open tunnel boring machine is completed, the drilling and blasting construction of the intermediate pilot tunnel is stopped, and the open tunnel boring machine advances to the working face of the intermediate pilot tunnel, so that the open tunnel boring machine can excavate and produce, and the two main tunnels continue Drill and blast construction;

[0032] S3....

Embodiment 2

[0041] Embodiment 2: A construction method for passing through an existing railway under a three-hole highway tunnel, comprising the following steps:

[0042] The construction method for passing through the existing railway under the three-hole highway tunnel is characterized in that it comprises the following steps:

[0043] S1. The construction adopts the drilling and blasting method to blast the two main holes and the intermediate pilot hole. In step S1, the drilling and blasting method is a construction method that uses explosive blasting to break the rock mass and open the cavern. S1 The main hole is treated and reinforced The distance between the working face and the unfavorable geological zone shall not be less than 10m;

[0044] S2. After the assembly and commissioning of the open tunnel boring machine is completed, the drilling and blasting construction of the intermediate pilot tunnel is stopped, and the open tunnel boring machine advances to the working face of the ...

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Abstract

The invention discloses a construction method for underneath passing of an existing railway through a three-hole highway tunnel. The construction method comprises the following step of: S1, blasting two main holes and a middle pilot tunnel through a drilling and blasting method during construction. A railway tunnel body is excavated and supported, smooth blasting is adopted for blasting, the safe distance between an inverted arch and a tunnel face needs to be guaranteed during lining and inverted arch construction so as to guarantee construction safety of the tunnel face and the inverted arch, concrete is sprayed in time for sealing after the inverted arch is excavated, and then concrete construction is carried out, so that the problems that a railway tunnel cannot be communicated under a traditional three-hole tunnel, traffic accidents are liable to occur during traveling, and time is liable to delay during traveling are solved, and the effects of reducing traffic accidents and improving the traveling efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a construction method for a three-hole highway tunnel passing under an existing railway. Background technique [0002] From 2180 BC to 2160 BC, a brick-lined pedestrian passage about 900 meters long was built under the Euphrates River. . In 36 BC, the Bosilibo Road Tunnel dug between Naples and Puzzoli was about 1,500 meters long, 8 meters wide and 9 meters high. The tunnel is the Shimen Tunnel on the Gubao Incline. It was built in the ninth year of Yongping in the Eastern Han Dynasty. The ancient tunnel was built in relatively hard rock without lining. Make the rock swell first and then suddenly shrink and crack to facilitate excavation. In the Middle Ages, tunnels were mainly used for mining and military affairs. Railway tunnels are passages specially used for train transportation. When railways pass through mountainous areas, due to limited traction capacity and ...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/10E21D11/18E21D21/00
CPCE21D9/006E21D11/105E21D11/107E21D11/183E21D21/0026
Inventor 赵红刚李亚隆毛锦波于海涛
Owner 赵红刚
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