黏性土地层中盾构隧道开挖面支护压力计算方法探讨

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Abstract The determination of the face supporting pressure has been one of the key problems in tunnelling engineering. This paper presents a discussion in depth on six different calculating models of the face supporting pressure. Based on the characteristics of clayey soil，the famous Horn?s silo model was modified and the calculation equation on clayey soil，which considers the soil arching effect，was successfully derived. Taking Qianjiang tunnel for example，the calculating results by seven different face supporting pressure methods were analyzed；and their applicability was investigated as well. Detailed discussion on the choosing of calculation parameters was given；so as to provide reference values for similar projects.

Key words： tunnelling engineering supporting pressure calculation methodclayey soil soil arching effect shield tunnel

Received: 20 May 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I3/606

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