危岩链式规律的力学演绎

危岩链式规律主要是对群体危岩崩落的先后顺序的描述。危岩链式规律的研究核心是确定各个受力不同的危岩体的崩落时间。危岩的崩落时间主要由三部分组成:岩腔的形成时间,危岩主控结构面的裂纹孕育和裂纹的扩展破坏所需要的时间。其中岩腔的形成时间主要由软、硬质岩的风化速度差所决定,裂纹的孕育和裂纹的扩展时间主要由各块危岩体所受的荷载决定。裂纹的孕育和扩展时间通过岩石的蠕变损伤断裂理论进行求解。然后通过对各块危岩体的崩落机理和时间的综合分析验证了群体的崩落基本上是和危岩链式规律相符合的。获得了的群体危岩崩落机理和时间计算方法不仅给群体危岩的防治和治理提供了理论依据而且也对陡崖附近的地貌形成和演化提供理论依据。

Mechanical Illation for Chained Regularity of Perilous Rock

Chained regularity of perilous rock is mainly a describtion for the avalanche order of the group perilous rock.The core of the study on chained regularity of perilous rock is to confirm the avalanche time of each perilous rock suffering from different loads.The avalanche time for each perilous rock is composed of three parts: the time for rock cell formation,the time for crack gestation of perilous rock's control fissure and the time for crack enlarging up to its failure.The time for rock cell formation was dominant by the soft and inflexible rock's weathering velocity.The time that crack gestated and enlarged is dominant by the load each perilous rock bore.The time that crack gestated and enlarged is calculated by the theory of rock damage and rupture.And then,it is validated that the group perilous rock's avalanche by and large accorded with the chained regularity of perilous rock by integrated analysis of the time that each perilous rock avalanched.The mechanism of group perilous rocks avalanche and the time of perilous rock avalanche have been gained.It provided not only theory for group perilous rocks' prevention and cure,but also provided a theory for physiognomy formation and evolution.