Statistic Analysis on TimeSpace Effects of Deformation of Surrounding

Tunnel Construction ›› 2011, Vol. 31 ›› Issue (2): 166-170.

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Statistic Analysis on TimeSpace Effects of Deformation of Surrounding

GUO Shi-An

Shenzhen Highway and Tunnel Construction Management Office, Shenzhen 518100, Guangdong, China

Received:2011-01-20 Revised:2011-03-15 Online:2011-04-20 Published:2011-05-11

Abstract

Abstract:

The scatter diagram and histogram of the stabilization time and stabilization distance of the deformation under Grade Ⅱ to Grade Ⅴ surrounding rocks, as well as the crown settlement, are drawn and their fitted normal distribution function is provided, based on the site monitoring data of 6 threelane NATM tunnels on LianhuaYanba Highway in Shenzhen, so as to estimate the stability of different grades of surround rocks and to provide reference for the timing of the secondary lining installation. Conclusions drawn are as follow: The stabilization time and stabilization distance of the deformation of the surrounding rocks of tunnels have some connection with the grades of the surrounding rocks and the stabilization time and stabilization distance grow as the grades of the surrounding rocks grow.

Key words: tunneling, surrounding rock grade, crown settlement, convergence deformation, timespace effect

GUO Shi-An. Statistic Analysis on TimeSpace Effects of Deformation of Surrounding[J]. Tunnel Construction, 2011, 31(2): 166-170.

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Statistic Analysis on TimeSpace Effects of Deformation of Surrounding

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