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Tunnel Construction >

2021 , Vol. 41 >Issue 9: 1577 - 1584

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.09.017

Risk Prevention and Control Technology for Trackless Transportation with NonexplosionProof Equipment in Tunnels with High Gas Concentration: 

a Case Study on Tianping Tunnel of ChongqingGuiyang Railway

  • WANG Dong
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  • (1. China Railway Tunnel Consultants Co., Ltd., Guangzhou 511458, Guangdong, China; 2. Guangdong Provincial Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure, Guangzhou 511455, Guangdong, China)

Online published: 2021-10-01

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Abstract

The influencing factors of trackless transportation technology for the Tianping tunnel of ChongqingGuiyang railway are analyzed to realize trackless transportation with nonexplosionproof equipment in tunnels with high gas concentration, ensure the safety of the tunnel construction environment and high efficiency of the transportation machinery, and to pass the tunnel section with high gas concentration smoothly and quickly. Subsequently, the feasibility of the trackless transportation technology with nonexplosionproof equipment is examined, and the corresponding safety risk prevention and controlsupporting techniques are proposed. The applicable results of trackless transportation technology with nonexplosionproof equipment show the following: (1) The gas concentration and outburst volume in the tunnel were reduced effectively, realizing the comprehensive and fullprocess monitoring of gas concentration during the construction process and ensuring the safe implementation of trackless transportation technology with the nonexplosionproof equipment. (2)The comprehensive calculation results of benefits such as labor consumption, equipment input, transportation cost, and schedule show that the construction schedule and cost can be reduced by 5.4 month and more than RMB 30 million, respectively, realizing the safe and highefficient construction of the tunnel with high gas concentration.

Key words： tunnels with high gas concentration; nonexplosion-proof equipment; trackless transportation; risk prevention and control

Cite this article

WANG Dong .

Risk Prevention and Control Technology for Trackless Transportation with NonexplosionProof Equipment in Tunnels with High Gas Concentration: 

a Case Study on Tianping Tunnel of ChongqingGuiyang Railway

[J]. Tunnel Construction, 2021 , 41(9) : 1577 -1584 . DOI: 10.3973/j.issn.2096-4498.2021.09.017

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