摘要
在工程区基岩被第四纪土、江水等覆盖的情况下,如何充分利用好获得的钻孔岩芯来分析断层的发育和活动性情况就显得非常重要。为此,地基勘察中引入了一种显微构造分析方法,即方解石脉双晶纹分析方法。方解石脉双晶纹能解决断层的活动期次、每一期次的强度、断层应力场、断层性质、断层活动时的环境条件和最后一次活动的时代等问题。由于方解石脉双晶纹发育的广泛性,使之具有推广价值。
It is very important to use a core to analyze the development and activity of faults in the case of bedrock which is covered by soil and water.In order to do this,a method of microstructure in some bedrock investigation,was applied in this research,that is calcite twin lamellae method.The calcite twin lamellae can indicate the activity period of a fault,intensity of a fault in a period,stress directions,mode of fault activities,environmental conditions and the time of the last activity.The calcite twin lamellae method can be used widely because calcite veins widely develop in faults.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2002年第2期184-190,共7页
Rock and Soil Mechanics
基金
江苏省交通科技项目资助(编号:2000185)
