问题:
[单选题]单一平面滑动破坏的岩坡,滑动体后部可能出现的张裂缝的深度为(岩石重度 γ,滑面粘聚力C,内摩擦角φ )()。
A(2C/γ)*tg(45°+φ/2)
B(2C/γ)*tg(45°-φ/2)
C(C/γ)*tg(45°+φ/2)
D(C/γ)*tg(45°-φ/2)
A(2C/γ)*tg(45°+φ/2)
B(2C/γ)*tg(45°-φ/2)
C(C/γ)*tg(45°+φ/2)
D(C/γ)*tg(45°-φ/2)
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