Key Technologies for Design and Construction of Tunnels with Flat Roofs and Straight Walls

doi:10.3973/j.issn.1672-741X.2015.12.010

Tunnel Construction ›› 2015, Vol. 35 ›› Issue (12): 1295-1300.DOI: 10.3973/j.issn.1672-741X.2015.12.010

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Key Technologies for Design and Construction of Tunnels with Flat Roofs and Straight Walls

LI Bing^1,2, HAO Zhihong^1,2, LI Songmei^1,2, DU Yufeng^1,2

(1. Beijing Rail and Transit Design & Research Institute, Beijing 100068, China;  2. Beijing Rail and Transit Engineering Technology Research Center, Beijing 100068,China）

Received:2015-07-03 Revised:2015-09-19 Online:2015-12-20 Published:2016-01-08

Abstract

Abstract:

In the construction of the mined tunnels with flat roofs and straight walls in Beijing, collapse and ground surface settlement may occur. In the paper, the technical difficulties in the design and construction of mined tunnels with flat roofs and straight walls are analyzed, the design method, construction principle and requirement for the mentioned tunnels are proposed, the sequential support, advance support, primary support, construction step conversion and special measures taken for the mentioned tunnels are summarized, and three typical construction sequences are proposed.

Key words: mined tunnel with flat roof and straight wall, design and construction, construction steps

CLC Number:

U 455

LI Bing, HAO Zhihong, LI Songmei, DU Yufeng. Key Technologies for Design and Construction of Tunnels with Flat Roofs and Straight Walls[J]. Tunnel Construction, 2015, 35(12): 1295-1300.

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Key Technologies for Design and Construction of Tunnels with Flat Roofs and Straight Walls

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