井孔水温对远场巨震同震响应及其机制的数模研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
热量的流动必然伴随着温度的改变,地震活动期间的井孔水温同震响应也服从热力学的基本规律。本文以汶川8.0级地震和日本9.0级地震为例,以海口ZK26井水温同震响应的观测数据为基础,运用热力学传导方程的数值模拟方法,研究了同震响应过程中井孔水温度变化与热量传导之间的关系及相关的热力学机制问题.通过正演的方法,得出沿井深方向不同时刻水温同震响应变化的数值模拟曲线,水温数值模拟曲线与实际测量数据一致.研究结果表明,井孔中水温同震响应方式(上升、下降或不变),与水温传感器的位置、热源的位置和分布、传感器与热源之间的相对空间等因素有关。
Variations of temperature are accompanied by exchange of heat,and thus,coseismic response of water temperature during the activity of earthquake should obey the laws of thermodynamics.Taken the cases of the 2008 Wenchuan MS8.0 earthquake in China and the 2011 Fukushima 9.0 Earthquake of Japan,and based on the coseismic response data of water temperature collected from well ZK26 in Haikou,Hainan province,we analysed the relationship between variations of water temperature and heat conduction as well as the thermodynamic mechanism by numerical simulation of thermodynamic conduction equation.Then through forward modeling,we obtained several simulation curves of coseismic effect of water temperature along the axis of well at different times,and the water temperature simulation curves fit the measurement curves approximately.Our research indicates that the way of coseismic response(ascending,descending or stable) has something to do with factors like the locations of sensors,distribution and locations of heat sources,the span between sensors and heat sources and so on.
引文
[1]鱼金子,车用太,刘五洲.井水温度微动态形成的水动力学机制研究[J].地震,1997,17(4):389-396.
    [2]车用太,鱼金子,刘春国.我国地震地下水温度动态观测与研究[J].水文地质工程地质,1996,23(4):34-37.
    [3]Kitagawa Y,Koizumi N.Comparison of post-seismic groundwater temperature changes with earth-quake-inducedvolumetric strain release:Yudani hot spring,Japan[J].GeophysResLett,1996,23:3 147-3 150.
    [4]梁昆淼.数学物理方程(第3版)[M].北京:高等教育出版社,1998.
    [5]刘娟芳,曾丹苓,刘朝,等.水导热系数的分子动力学模拟[J].工程热物理学报,2007,28(2):196-198.
    [6]Pinson F,Gregoire O,Quintard M,et al.Modeling of turbulent heat transfer and thermal disper-sion for flows inflat plate heat exchangers[M].International Journal of Heat and Mass Transfer(inPress),2007.
    [7]孙小龙,刘耀炜.应力加载作用引起地下水微温度场变化的研究综述[J].国际地震动态,2006,(7):17-26.
    [8]孙小龙,刘耀炜,王博.宾川井对印度尼西亚大震的同震响应特征及其机理解释[J].地震,2008,28(3):69-78.
    [9]滕吉文,白登海,杨辉,等.2008汶川MS8.0地震发生的深层过程和动力学响应[J].地球物理学报,2008,51(5):1 385-1 402.
    [10]石耀霖,曹建玲,马丽,等.唐山井水温的同震变化及其物理解释[J].地震学报,2007,29(5):265-273.
    [11]杨竹转,邓志辉,陶京玲,等.北京塔院井数字化观测水温的同震效应研究[J].地震学报,2007,29(2):203-213.
    [12]张昭栋,郑金涵.井水位阶变与含水层所受体应力之间的定量关系[J].地球物理学报,1994,37(A02):222-229.
    [13]郑江蓉,徐桂明,李鸿宇,等.2004年12月26日印度尼西亚8.7级强震后江苏地区同震效应分析[J].防灾减灾工程学报,2005,25(1):105-113.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心