Study on the effect of underground hot water on fracturing and earthquake activities  

作　　者：宋贯一 易立新 宋晓冰 

出　　处：《Acta Seismologica Sinica(English Edition)》2000年第6期674-678,718,共6页

基　　金：Chinese Joint Seismological Science Foundation (9507433).

摘　　要：Utilizing the geological exploring information of Houhaoyao area and digital seismic network's data of Huailai area, the author studied the role of underground fluids (hot water) in the fracturing activities and in the processes of seismogeny. The results show that the shear stress between two blocks of the fault is decreased rapidly and the vertical fault throw is obviously increased at the fracture segments where there is underground hot water action. With the vertical fault throw increasing, the shear stress transfers to two ends of the fault at the place where there is no underground hot water action, and the earthquake probably develops at these two ends of the fault.Utilizing the geological exploring information of Houhaoyao area and digital seismic network's data of Huailai area, the author studied the role of underground fluids (hot water) in the fracturing activities and in the processes of seismogeny. The results show that the shear stress between two blocks of the fault is decreased rapidly and the vertical fault throw is obviously increased at the fracture segments where there is underground hot water action. With the vertical fault throw increasing, the shear stress transfers to two ends of the fault at the place where there is no underground hot water action, and the earthquake probably develops at these two ends of the fault.

关 键 词：underground hot water tectonic activity seismogeny processP 

分 类 号：P314.2[天文地球—固体地球物理学]