Abstract Considering that upper-soft lower-hard strata may increase construction risks and cause ground settle?
ment during shield tunnelling, and using the unhomogeneous strata in Nanjing as an example, this paper analyzes the stability of the working face and relevant construction parameters during tunnelling, and then proposes suitable tunnelling modes and auxiliary measures.
Keywords ��
Upper-soft lower-hard strata Shield Tunnelling mode Abrupt change criterion Test method
Abstract ��
Considering that upper-soft lower-hard strata may increase construction risks and cause ground settle?
ment during shield tunnelling, and using the unhomogeneous strata in Nanjing as an example, this paper analyzes the stability of the working face and relevant construction parameters during tunnelling, and then proposes suitable tunnelling modes and auxiliary measures.
Keywords ��
Upper-soft lower-hard strata Shield Tunnelling mode Abrupt change criterion Test method
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2017, Vol. 54 