天津地区咸水层观测井的改造与优化问题讨论
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摘要
本文系统清理、分析了天津地区的咸水井观测资料,通过实际观测资料分析认为,天津地区的咸水体具有封闭性好,不开采的优势,具备了作为地震观测井的基本条件;在观测资料的动态方面,一般具有两种动态变化特征,但仅个别井能够记录到微弱固体潮信息,同时也不能记录到水震波;在映震方面,取得了一批震例资料,其异常幅度往往较大,映震特征明显;在观测层的选取上,一般应选择50 m以下的咸水层,并且在观测段中最好应包括海相层;在观测点的位置方面,应选择较大断裂的交汇点、拐点以及端点部位或活动性较强的断裂上。
In this paper,observation data of salt water wells in Tianjin region are systematically analyzed.Through the analysis of actual observation data,the results show that the salt water layer possesses the advantageous position of better closure and non-exploitation,so it possesses fundamental conditions as observation well for earthquakes;In the aspect of dynamic variation,observation data usually possess two dynamic variation features,but only individual wells show a weak response of solid earth tide,at the same time it cannot record coseismic reflection;In the aspect of reflecting earthquakes,some earthquake examples are obtained,and the anomalous range usually is large,the feature of reflecting earthquakes is very clear;As for the selection of observation layer,it is better to select observation layer under 50 m,moreover the observation layer may include marine layer as well.The position of observation sites should be the interjunction of large scale faults or the inflection point or end point of faulting as well as on fairly active faults.
In this paper,observation data of salt water wells in Tianjin region are systematically analyzed.Through the analysis of actual observation data,the results show that the salt water layer possesses the advantageous position of better closure and non-exploitation,so it possesses fundamental conditions as observation well for earthquakes;In the aspect of dynamic variation,observation data usually possess two dynamic variation features,but only individual wells show a weak response of solid earth tide,at the same time it cannot record coseismic reflection;In the aspect of reflecting earthquakes,some earthquake examples are obtained,and the anomalous range usually is large,the feature of reflecting earthquakes is very clear;As for the selection of observation layer,it is better to select observation layer under 50 m,moreover the observation layer may include marine layer as well.The position of observation sites should be the interjunction of large scale faults or the inflection point or end point of faulting as well as on fairly active faults.
引文
[1]邵永新,马建英,王建国,等.天津地区地震地下流体观测网调整与优化的思考.地震研究,2009,32(2):215-220
[2]车用太,鱼金子.关于天津双桥井“蠕变”水位异常问题的讨论.地震,1998,18(3):313-318
[3]马建英.天津地区咸水井映震能力评估.内陆地震,2008,22(3):252-257
[4]邵永新,郑文俊.天津水动态项目异常的典型特征.地震,2002,22(4):123-129
[5]邵永新,李君英,李一兵,等.地下流体动态异常分布与构造的关系.西北地震学报,2000,22(3):284-287
[6]刘学领,马建英.天津地区咸水层水位映震能力的检验.华北地震科学,2009,27(2):22-25
[7]金艳,高文海,郑熙铭.东台子井水位的突升及其与地震的关系.地震学刊,1989(4):104-107
[8]金艳,郑熙铭.双桥井水位地震异常特征的再认识.华北地震科学,1997,15(1):58-66
[9]高玉柱.天船井水位映震特征研究.华北地震科学,2008,26(4):21-24
[10]郑熙铭.咸水层水位的突升与地震活动.地震,1988(5):10-16
[11]王雅灵.天津咸水层水动态映震特征剖析.华北地震科学,1988,6(2):7-16
[12]陆明勇.关于构造变动的“双力源”假设.山东科技大学学报(自然科学版),2009,28(5):1-9
①王强,宋大伟,等.天津市第四系沉积结构与地下水赋存条件分析.地质矿产部天津地质矿产研究所.1994年5月
①唐山地震资料汇编组.1976年唐山7.8级地震观测资料汇编(地下水部分).1978年8月
[2]车用太,鱼金子.关于天津双桥井“蠕变”水位异常问题的讨论.地震,1998,18(3):313-318
[3]马建英.天津地区咸水井映震能力评估.内陆地震,2008,22(3):252-257
[4]邵永新,郑文俊.天津水动态项目异常的典型特征.地震,2002,22(4):123-129
[5]邵永新,李君英,李一兵,等.地下流体动态异常分布与构造的关系.西北地震学报,2000,22(3):284-287
[6]刘学领,马建英.天津地区咸水层水位映震能力的检验.华北地震科学,2009,27(2):22-25
[7]金艳,高文海,郑熙铭.东台子井水位的突升及其与地震的关系.地震学刊,1989(4):104-107
[8]金艳,郑熙铭.双桥井水位地震异常特征的再认识.华北地震科学,1997,15(1):58-66
[9]高玉柱.天船井水位映震特征研究.华北地震科学,2008,26(4):21-24
[10]郑熙铭.咸水层水位的突升与地震活动.地震,1988(5):10-16
[11]王雅灵.天津咸水层水动态映震特征剖析.华北地震科学,1988,6(2):7-16
[12]陆明勇.关于构造变动的“双力源”假设.山东科技大学学报(自然科学版),2009,28(5):1-9
①王强,宋大伟,等.天津市第四系沉积结构与地下水赋存条件分析.地质矿产部天津地质矿产研究所.1994年5月
①唐山地震资料汇编组.1976年唐山7.8级地震观测资料汇编(地下水部分).1978年8月
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