【摘要】 通过对2组钻孔应力解除法地应力的测试和6组Kaiser效应地应力的测试,查明了二郎山深埋特长公路隧道工程岩体内地应力的总体状态为潜在走滑型,隧道中部测得的地应力量级普遍较高,最大主应力高达35.3MPa,因而,施工过程中须高度重视其高地应力与岩爆问题。更多还原

【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.更多还原