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| IN-SITU STRESS MEASUREMENT IN ROCKMASS OF ERLANG MOUNTAIN HIGHWAY TUNNEL |
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Abstract Through the in-situ stress measurement by borehole overcoring technique and Kaiser effect method，it is found out that the general space stress state of rockmass in the famous，deeply-lying and especially long Erlang mountain highway tunnel，belongs to the potential strike-slip type. The measured in-situ stresses in the middle part of the tunnel are generally very large with the major principal stress of 35.3 MPa. So during the construction process，the problems of high in-situ stress and rockburst have to be taken into account.
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Received: 13 June 2001
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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