矾山岩体是一环状碱性超镁铁杂岩体。靠近该岩体的白云岩已变成白云质大理岩,岩层产状迅速变陡。沿岩体边缘形成一弧形挤压带。挤压带中,大理岩具明显的形态组构,其片理面平行于挤压带,岩石晶粒的轴比为2.6:1:0.5。本文提出一种计算f双晶面上分剪应力系数的新方法和一种关于岩体形成机制的新认识。 Alum rock body is a cyclic alkaline ultramafite complex. The dolomite near the rock mass has become dolomitic marble, and the rock formation has rapidly changed steeply. Along the rock edge to form a curved extrusion zone. In the compression zone, the marble has obvious morphological structure with the plane of the marble parallel to the compression zone. The axial ratio of the rock grains is 2.6: 1: 0.5. In this paper, a new method of calculating the shear stress coefficient on f-bite plane and a new understanding of rock mass formation mechanism are proposed.