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Title:: Study on the Optimization of Tianjin Underground Fluid Observation Network

Author(s):: SHAO Yong-xin; MA Jian-ying; WANG Jian-guo; WU Qiang; (Earthquake administration bureau of Tianjin Municipality,Tianjin 300201,China)

摘要:: 从天津地区地震地下流体观测网映震能力的角度出发,讨论了其发展问题。在天津地区地下流体观测网映震效果不理想的条件下,2007年又发生了王3井断流、王4井井压加速下降情况,因此,应对天津流体观测网的观测进行调整:在数量上应以水物理参量的观测为主,水化学观测为辅; 在观测井孔的深度上,采取浅井(咸水井)、中深井和深井相结合的方式,建设一个立体型的观测网,尤其应注意对咸水层的利用; 采取与相关单位合作联合观测的方式,资料共享。

Abstract:: In this paper,we discussed the development of underground fluid observation network in Tianjin region based on the earthquake-responding capacity.In the situation of weak capacity to respond from earthquake,no flux of Wang3 well happened and the pressure of Wang4 well quickened down in 2007.We considered that the fluid observation network of Tianjin must be adjusted.Water physics parameters should be given quantitative priority than water chemistry parameters for the future in Tianjin fluid observation network.In the aspect of the well's depth,we adopted the method of integrating shallow wells(salt water wells),middle-deep wells and deep wells.A three-dimensional observation network should be built.More attention should be given to the use of salt water layer.Relative departments should unite to observe and cooperate with each other to share the data and information.