岩体是一种地质体。在漫长的地质年代中经历了多次地质构造运动,并在构造应力作用下生成各种构造遗迹,在地质上称之为结构面,如断层、节理、层理、破碎带等。它们在不同程度上削弱岩体的强度,故一般简称为弱面(软弱结构面)。在自然界中,岩体有时表现为散体状,有时表现为破裂状或整体状,因而形成由松散体——弱面 Rock mass is a geological body. In the long geological age has experienced many geological tectonic movement, and in the tectonic stress generated by a variety of structural monuments, geologically known as the structural surface, such as faults, joints, bedding, broken belt. They weaken the strength of rock mass in varying degrees, so they are generally referred to as the weak surface (weak structural surface). In nature, rock sometimes behaves in a loose form, sometimes as a rupture or a whole, and thus forms a mass consisting of a loose body-weakness