可可托海——二台断层带断层泥力学性质的实验研究

THE EXPERIMENTAL STUDY OF THE MECHANICAL BEHAVIOR OF FAULT GOUGE ALONG THE KE KE TUO HAI-ER TAI FAULT ZONE IN XINJIANG AUTONOMOUS REGION

摘要: 沿新疆可可托海-二台断层采集了断层泥,分析了断层中碎屑和粘土含量的比例。在100-300Mpa围压下测定了断层泥的力学性质,并就它们与断层粘土含量和水含量的关系进行了讨论。#br#1931年在新疆可可托海-二台断层中部不连续段卡拉先格尔发生了8级强震,沿断层发生了十几米的右旋水平错动。由于新疆气候干旱,人烟稀少,使这个五十多年前发生的地震遗迹得以保存。在新疆地震局的协助下,1984年部分作者沿这条长达200公里的地震断层进行了野外考查,并在一些部位采集了断层泥样品。本文着重提供断层泥的性质以及不同围压下的强度。由于断层泥是断层活动的产物,但又影响断层带的力学性质,故可在分析地震发生条件时参考。

Abstract: The fault gouge was collected from the Ke Ke Tuo Hai-Er Tai fault Zone in Xinjiang autonomos rcgiont.The content of clay minerals and clastic fragment was analysed.The mechanical behaviors of fault gogue were studied under the confining pressurr of 100-300Mpa. And the correlation between them and the clay content and moisture content was discussed.