Chang'an University

Jianxun Chen

Yanbin Luo

Chuanwu Wang

Mengen Qin

Chaopeng Tian

Fangfang Dong

Chaoxuan Zhang

Lijun Chen

Pei Huang

Daochuan Zhong

A method for determining parameters of cross sections of a single-hole four-lane highway tunnel includes the steps of determining surrounding rock pressure, constructing numerical models under different flatness ratios, calculating interval force of lining structures, calculating safety coefficients of the lining structures, performing contrastive analysis on the cross sections under different flatness ratios, obtaining reasonable cross section forms, and so on. This method provides a basis to formulate the specifications and standards for design of a single-hole four-lane highway tunnel and may provide a reference basis to design a cross section of a single-hole four-lane highway tunnel in new construction or reconstruction and expansion, thereby ensuring safety and economic efficiency of the cross section forms of the single-hole four-lane highway tunnel.

Method for parameters of cross sections of single-hole four-lane highway tunnel

A method for deformation control of large-span tunnel in chlorite schist stratum. The method divides the large deformation of large-span tunnel in chlorite schist stratum into five deformation grades according to the surrounding rock conditions of the tunnel. In response to each deformation grade, the deformation control of large-span tunnel is determined so as to ensure the safety and stability of the tunnel support structure and to avoid the clearance intrusion caused by tunnel deformation.

Method for deformation control of large-span tunnel in chlorite schist stratum

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Xi'an, China

Jianxun Chen