土被, 风化层
Under the mantlerock, the Tangential stress increases gradually and the Vertical stress goes slightly down.
最大主应力约等于竖向应力,与井筒轴向夹角为11.9°~14.25°。
Mantlet:移动掩蔽物
mantlerock 上岩层 | mantlet 移动掩蔽物 | mantua 女用外套