1.(4) The palaeotectonic movements resulted in the complicate stages of fractures, the relations between fractures were cutting, confinement, tacnode and so on, and formed 2 types 6 groups fractures.

1.(4) 受多次古构造运动的影响，南裂缝之间的关较复杂，有切割、、切共轭、追踪改造等关，形成了两期共6组构造裂缝。