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鉴于井壁结构承受的外界作用是由“变形”引起的“特殊荷载”,诸如冻结压力、膨胀土压力、开挖变形压力及温度收缩应力等,而且这一类变形(从实测资料看)对井壁结构往往起着决定性的作用,同时变形变化与荷载变化有着许多不同的特点,所以本文先补充一种新的探索方法,即“变形变化引起的应力状态”,然后,重点探索井壁结构的环向开裂问题。
In view of the external role of the borehole wall structure is the “special load” caused by “deformation”, such as the freezing pressure, expansive soil pressure, excavation deformation pressure and temperature contraction stress, and this type of deformation (from the measured data) Well wall structure often plays a decisive role. At the same time, the deformation change and the load change have many different characteristics. Therefore, this paper first adds a new exploration method, namely “the stress state caused by the deformation change”. Then, it focuses on the well wall structure. The problem of ring cracking.