武汉地铁虎泉—名都区间隧道开挖引起的地表沉降研究

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Abstract In-depth research and reasonable control of tunnel excavation induced ground subsidence are of great practical significance. Taking the excavation of Huguan—Mingdu section of Wuhan subway as background，based on the typical ground subsidence and monitored displacement of the tunnel cross section convergence，simplified stochastic medium theory formula is used to back analyze the displacement of typical sections. The parameters，convergence area and where is the influextial angle，are obtained from the calculation. Ranges of key parameters values are given in the similar conditions. Therefore，it has some practical value in guiding the construction of Wuhan subway.

Key words： tunnelling engineering Wuhan subway double tunnels ground subsidence stochastic medium theory

Received: 20 December 2011

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http://www.rockmech.org/EN/Y2012/V31/I5/908

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