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弥勒井多层梯度水温对比研究

The comparative study of multi-layer gradient water temperature in Mile Well
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摘要 通过对弥勒井多层梯度水温观测数据资料的分析研究,发现该井多层水温观测有以下特征:(1)弥勒井多层梯度水温的对比观测,较好地揭示了井-含水层系统中丰富的动态信息,为更细致地了解单井多层水温动态变化提供了新的观测技术途径;(2)多层梯度水温对比观测在地震前兆异常跟踪方面比起单层水温观测更能捕捉到地震引起的前兆信息,而且多层水温观测能充分利用现有井孔资源,更好地观测到地震引起的各层水温变化情况;(3)从2021年5月21日大理漾濞县连续发生5.6、6.4、5.2级3次地震、2021年6月10日楚雄双柏县5.1地震、2021年6月12德宏盈江5.0级地震、2021年9月16日四川泸县6.0地震情况看,在震前水温观测数据有前兆异常反映,异常形态为阶变;(4)多层水温同震响应明显、同步性好;(5)深层水温比浅层水温的映震效果更明显,受干扰程度更小,多层梯度水温对比研究在地下流体观测中,具有十分重要的作用. Through the analysis and research on the data of multi-layer gradient water temperature observation in Mile Well,it is found that the multi-layer water temperature observation in this well has the following characteristics.①The comparative observation of multi-layer gradient water temperature in the Mile Well has better revealed the rich dynamic information in the well aquifer system,providing a new observation technical way for more detailed understanding of the dynamic changes of multi-layer water temperature in a single well.②Multi layer gradient water temperature contrast observation can better capture earthquake induced precursor information than single layer water temperature observation in terms of earthquake precursor anomaly tracking,and multi layer water temperature observation can make full use of existing borehole resources to better observe the water temperature changes in each layer caused by earthquakes.③According to the three earthquakes of magnitude 5.6,6.4 and 5.2 successively occurred in Yangbi County,Dali on May 21,2021,the 5.1 earthquake in Shuangbai County,Chuxiong on June 10,2021,the 5.0 earthquake in Yingjiang,Dehong on June 12,2021,and the 6.0 earthquake in Luxian County,Sichuan on September 16,2021.④Multi layer water temperature has obvious co seismic response and good synchronization.⑤The deep water temperature is more effective than the shallow water temperature in reflecting earthquakes and less disturbed.The comparative study of multi-layer gradient water temperature plays a very important role in the observation of underground fluids.
作者 杜家云 DU Jia-yun(Seismological Bureau of Mile City,Mile 652399,Yunnan,China)
机构地区 弥勒市地震局
出处 《云南大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第S01期233-239,共7页 Journal of Yunnan University(Natural Sciences Edition)
基金 云南省人民政府“十项重大措施”地震监测预报项目(JCYB-20080601-5).
关键词 弥勒井 多层梯度水温 对比观测 同震响应 Mile Well multi layer gradient water temperature comparative observation coseismic response
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