Mechanized Construction Technology for Large Crosssection&nbsp;Longchang
Highway Tunnel in Grade Ⅳ Surrounding Rock

HUANG Weike; CHEN Jiabao; ZHANG Libin; MA Jianyun

doi:10.3973/j.issn.2096-4498.2020.08.014

Tunnel Construction >

2020 , Vol. 40 >Issue 8: 1203 - 1210

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.08.014

Mechanized Construction Technology for Large Crosssection Longchang Highway Tunnel in Grade Ⅳ Surrounding Rock

HUANG Weike ,
CHEN Jiabao ,
ZHANG Libin ,
MA Jianyun

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(CCCCSHB Sixth Engineering Co., Ltd., Xi′an 710075, Shaanxi, China)

Online published: 2020-09-03

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Abstract

The construction of highway tunnels in China is characterized by manual operation, low mechanization degree, long process cycle time, slow construction progress and high safety risk. Hence, large crosssection construction method is proposed for Longchang Tunnel on GuiyangHuangping Expressway based on Chinese standards and the design concept of NATM in Europe. The "9+N" equipments, i.e. tripleboom rock drilling jumbo, arch anchor installation trolley, etc. + multifunctional geological drilling machine and automatic grouting machine, etc.〖KG-*3〗, and corresponding construction technologies are adopted to carry out seamless tunnel construction. The results show that "9+N"construction technology recommended can reduce the labor consumption and impact on surrounding environment, improve the mechanization degree and construction efficiency, and guarantee the construction safety and quality.

Key words： highway tunnel; mechanized construction; large rosssection construction method; NATM

Cite this article

HUANG Weike , CHEN Jiabao , ZHANG Libin , MA Jianyun .

Mechanized Construction Technology for Large Crosssection Longchang Highway Tunnel in Grade Ⅳ Surrounding Rock

[J]. Tunnel Construction, 2020 , 40(8) : 1203 -1210 . DOI: 10.3973/j.issn.2096-4498.2020.08.014

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