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地震研究中的断层流体动力学问题

The problems of fault fluids dynamics in seismological research

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【作者】 易立新刘香侯建伟王广才

【Author】 YI Li-xin1,LIU Xiang1,HOU Jian-wei1,WANG Guang-cai2 (1.Nankai University,Tianjin 300071;2.China University of Geosciences,Beijing 100081,China)

【机构】 南开大学中国地质大学 天津300071天津300071北京100081

【摘要】 流体在断裂带地震周期中具有重要作用。在地震流体研究中,该文建议在如下几个方面加强研究力度:①断层渗透结构和断裂带古水文地质旋回的研究;②断裂带流体循环的尺度效应;③流体分布、循环与构造展布关系;④断裂带深浅部流体关系研究。在断层流体动力学研究中,建议就某一发震断裂带开展系统研究,并优先解决以下问题:①断裂带流体的起源和成分;②产生和维持高孔隙压力的构造环境和水文地质条件;③断裂带及邻近岩体流体运移及重新分布的机制;④取得断裂带孔隙压力变化的数量知识;⑤垂直方向和水平方向流体孔隙压力变化范围;⑥地震周期中流体迁移与孔隙压变化规律。

【Abstract】 The fluids play an important role in the seismicity cycle of fault zones.The authors put forward several research areas that should be strengthened in the near future in China;① Fault permeability structure and pale-geohydrological history of fault zone;② The scale effect on fluid movement along fault zones;③ The relationship between fluid circulation distribution and tectonic geometry;④ The relationship between the shallow and the deep fluids.It is suggested that a systemic research work should be done on a specific earthquake fault,and the following topics should be studied preferentially.These are: ① What is the origin and composition of fault zone fluids? ② Identify the range of conditions necessary to develop and maintain elevated fluid pressures;③ What are the fluid transport mechanisms in and around the fault zone and what physical processes lead to fluid redistribution? ④ Quantify pore pressure spectrum of fault;⑤ What is the vertical and lateral distribution of fluid pressure regimes;⑥ What is extent of vertical and lateral fluid migration and pore pressure during a seismic stress cycle?

【基金】 国家自然科学基金项目“鲜水河—小江断裂带流体动力学研究”资助(40672161)
  • 【分类号】P315
  • 【被引频次】11
  • 【下载频次】325
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