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构造形迹结构面力学性质的鉴定,是研究、划分构造体系的基础。压扭性结构面是李四光同志提出的结构面力学性质的五种类型之一,它的特征主要是直压力#与水平扭力同时作用;先压后扭,或先扭后压的情况,则属于次序(或者可以说是复合)问题。据我们学习和野外实践,初步认识到的有下列几个特征。 1、断裂的一侧出现牵引褶曲,它的褶曲轴线与断裂面呈倾斜状,是直压力和水平扭力同时作用的结果(图1),与其它结构面的区别见表1。铜峪矿区的F_5断裂旁侧
The identification of the mechanical properties of the structural trace surface is the basis for the study and division of the structural system. The surface of the compression-torsional structure is one of the five types of the mechanical properties of the structural surface proposed by Comrade Li Siguang. Its characteristics are mainly that the direct pressure # acts in parallel with the horizontal torque; Order (or arguably compound) problem. According to our study and field practice, we initially realized the following several characteristics. 1, the traction fault occurs on one side of the fracture, and its axis of flexure and the fracture surface are inclined. It is the result of the simultaneous action of the direct pressure and the horizontal torque (Figure 1). The difference with other structural planes is shown in Table 1. Tongyu Mining F5 fault flank