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Smoke exhaust method for shallow tunnel construction

A technology for shallow buried tunnels and tunnels, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., and can solve problems such as large energy consumption, inconspicuous effects, and poor effects

Inactive Publication Date: 2021-05-18
华能铜川照金煤电有限公司
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Problems solved by technology

However, this method of mechanical air supply will become less and less effective with the increase of the excavation depth of the face, and increasing the power of the fan will cause greater energy consumption, and the effect is not obvious

Method used

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  • Smoke exhaust method for shallow tunnel construction

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Embodiment Construction

[0014] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0015] Such as figure 1 As shown, the vertical shaft flue 2 connected to the ground is drilled at intervals on the top of the tunnel with a shallow buried depth. The vertical shaft flue 2 is connected to the ground by steel pipe 1. Rain shielding device 4 is arranged on the top;

[0016] Among them, the contact position between the shaft flue 2 and the ground needs to be compacted to prevent accumulated water from seeping into the tunnel.

[0017] Wherein, th...

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Abstract

The invention discloses a smoke exhaust method for shallow tunnel construction. Vertical shaft smoke exhaust channels communicating with the ground are formed in the top of a tunnel with the shallower buried depth at intervals, the vertical shaft smoke exhaust channels communicate with the ground through steel pipes, the steel pipes are higher than the ground, and rain shielding devices are arranged at the tops of the steel pipes. According to the shallow terrain characteristics of the tunnel, the method that vertical shafts are formed in the top of the tunnel, and the vertical shaft smoke exhaust channels conduct natural ventilation and smoke exhaust through the chimney effect of air circulation is adopted, turbid air is exhausted to the ground through the vertical shaft smoke exhaust channels, and therefore the air quality of a tunnel face is improved, ventilation and smoke exhaust in the construction process are accelerated, and the smoke exhaust efficiency in the tunnel construction process is improved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a ventilation and smoke exhaust method for tunnel construction. Background technique [0002] With the rapid development of China's infrastructure, tunnels in mountainous and hilly areas are also widely used, and long tunnels are also increasing. A tunnel is an engineering building used to maintain the underground space as a traffic channel. During the construction process of the tunnel, the ventilation of the tunnel is generally adopted to enter the face of the tunnel, and then the tunnel surface is discharged from the tunnel through the tunnel space. During the construction of the tunnel, it is like a relatively airtight container. Due to excavation and blasting, equipment discharge, spray anchor support and other reasons, a large amount of smoke and dust cannot be discharged naturally, which leads to high failure rate of equipment, high incidence of occupational diseases of...

Claims

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Application Information

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IPC IPC(8): E21F1/00
CPCE21F1/006
Inventor 蒋大文姚斌丁继刚张国兴刘永军安小军朱一博
Owner 华能铜川照金煤电有限公司
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