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研究围岩破坏分类主要目的在于预测支护的破坏形态,以便采取针对性措施,有效地解决支护问题,这对所有类型支护都是非常重要的。 一、围岩的破坏分类 1.静压下的围岩破坏类型 岩体是一种多裂隙多属性的介质,它在不同的时间、空间及力学形态中,具有不同的介质性质、破坏机制和显现形式,但破坏类型主要取决于所处力场的特征。根据工程轴向与σ_1方向的关系,一般可分为压—张型破坏和压—剪型破坏两大基本类型。
The main purpose of the research on the classification of surrounding rock failure is to predict the failure mode of support so as to take pertinent measures to effectively solve the support problem, which is very important for all types of support. First, the classification of the surrounding rock damage 1 under the static pressure of rock failure type Rock mass is a multi-fractured multi-attribute medium, which in different time, space and mechanical morphology, with different media properties, damage mechanisms and The appearance of the form, but the type of damage depends mainly on the characteristics of the force field. According to the relationship between the engineering axial direction and the direction of σ_1, it can be generally divided into two basic types: compression-tension failure and compression-shear failure.