Application of flow driven pore-network crack model to Zipingpu reservoir and Longmenshan slip  

作　　者：ZHU BoJing LIU Chang SHI YaoLin SUN DongSheng ZHANG Kai 

机构地区：[1]Key Laboratory of Computational Geodynamics of Chinese Academy of Sciences, College of Earth Science, Graduate University of Chinese Academy of Sciences, Beijing 100049, China [2]Laboratoire De Geologie, Ecole Norrnale Superieure, 24 Rue Lhomond, 75231 Paris CEDEX 5, France [3]Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China [4]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第8期1532-1540,共9页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by Project SinoProbe-07 of China;the National Natural Science Foundation of China (Grant No. D0408/4097409);the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KJCX2-YW-N42);the Key Important Project of the National Natural Science Foundation of China (Grant No. 10734070)

摘　　要：The study has analyzed the relationship between the water-drainage sluice process of reservoir, stress triggers and shadows of earthquake and porosity variability of fault slip zone. First, the pore pressure, pressure gradient, viscous stress and Reynolds stress to reservoir-earthquake fault slip problem are analyzed, and these are un-negligible factors of the extended coulomb failure stress under ultra-high temperature and pressure condition. Second, the porosity tensor and permeability tensor are studied, the relationship between Zipingpu reservoir and Longmenshan slip has been analyzed, and the extended viscous stress and Reynolds stress as function of time and infiltration process are obtained. Last, some primary conclusions about the flow-solid coupled facture mechanism to the Zipingpu reservoir and Longmenshan slip problem are presented, which can help understand the flow-solid coupled facture mechanism of reservoir-coseismic fault slip problem.The study has analyzed the relationship between the water-drainage sluice process of reservoir, stress triggers and shadows of earthquake and porosity variability of fault slip zone. First, the pore pressure, pressure gradient, viscous stress and Reynolds stress to reservoir-earthquake fault slip problem are analyzed, and these are un-negligible factors of the extended coulomb failure stress under ultra-high temperature and pressure condition. Second, the porosity tensor and permeability tensor are studied, the relationship between Zipingpu reservoir and Longmenshan slip has been analyzed, and the extended viscous stress and Reynolds stress as function of time and infiltration process are obtained. Last, some primary conclusions about the flow-solid coupled facture mechanism to the Zipingpu reservoir and Longmenshan slip problem are presented, which can help understand the flow-solid coupled facture mechanism of reservoir-coseismic fault slip problem.

关 键 词：Zipingpu reservoir 2008 Wenchuan earthquake coulomb failure stress diffusion pore stress diffusion fluid flow driven pore-network crack model 

分 类 号：P542.3[天文地球—构造地质学] TV697.21[天文地球—地质学]