井水位气压效率b值动态响应的断层-前兆场主应力组合模式

COMBINATION PATTERNS OF FAULT -PRINCIPAL STRESS OF PRECURSOR FIELD RESPONSED BY THE ATMOSPHERIC PRESSUR EFFICIENCY b-VALUE OF WETER LEVEL IN WELL

摘要:

统计鲁03、04井水位的气压效率b值发现,在华北及其周缘绝大多数地震前两井前兆异常形态各异.经分析井孔定位断层走向与地震前兆场主应力的组合模式不同是产生上述现象的根本原因.

Abstract:

It is found after statistics that the styles of precursor anomaly of the atomosphetic pressure efficiency b-value of water level in well are different in Lu -0.3、04 wells to most earthquakes took place in North China and the adjacent regions. The analysis shows that the different combination patlerns of locating fault of wells and principal stress direction of seismic precursor field is the basical reason for it.