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ISSN 2096-7780 CN 10-1665/P

石小磊, 李良辉, 王俊, 孙亮亮, 张伟峰, 潘洁. 蚌埠监测中心井水位短时升高成因探究 [J]. 地震科学进展, 2023, (6): 261-267. doi: 10.19987/j.dzkxjz.2022-134" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-134.
引用本文: 石小磊, 李良辉, 王俊, 孙亮亮, 张伟峰, 潘洁. 蚌埠监测中心井水位短时升高成因探究 [J]. 地震科学进展, 2023, (6): 261-267. doi: 10.19987/j.dzkxjz.2022-134" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-134.
Shi Xiaolei, Li Lianghui, Wang Jun, Sun Liangliang, Zhang Weifeng, Pan Jie. Study on the cause of short-term rise of water level in Bengbu monitoring center well [J]. Progress in Earthquake Sciences, 2023, (6): 261-267. doi: 10.19987/j.dzkxjz.2022-134" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-134.
Citation: Shi Xiaolei, Li Lianghui, Wang Jun, Sun Liangliang, Zhang Weifeng, Pan Jie. Study on the cause of short-term rise of water level in Bengbu monitoring center well [J]. Progress in Earthquake Sciences, 2023, (6): 261-267. doi: 10.19987/j.dzkxjz.2022-134" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-134.

蚌埠监测中心井水位短时升高成因探究

Study on the cause of short-term rise of water level in Bengbu monitoring center well

  • 摘要: 本文在蚌埠监测中心井水位长时上升的研究基础上,对蚌埠监测中心井2017—2020年水位出现的59次短时间升高进行分析。通过选取不同时段的降雨参数,建立多元回归方程,研究显示,水位59次短时升高与降雨部分参数有一定的影响关系。结合蚌埠周边ML2.0以上震例和13次无降雨事件分析结果认为,蚌埠周边以ML2.0—3.0地震为主,地壳应力释放稍弱,且对蚌埠地下流体的影响幅度不大。ML3.0以上地震主要发生在皖西部和郯庐断裂带附近,地震活动性强,对蚌埠地下流体观测数据的变化幅度大,且持续时间更长。由此得出水位短时上升在排除降雨因素影响的同时还与蚌埠地区地壳应力变化有关系,可见蚌埠监测中心井具有一定的预测效能,能够反映蚌埠周边地区地震应力场变化,对于地震前兆观测数据的分析预报研究具有重要的意义。

     

    Abstract: Based on the previous study on the long-term rise of water level in Bengbu monitoring center well, we analyze 59 short-time rises of the water level in Bengbu monitoring center well from 2017 to 2020. By selecting rainfall parameters in different periods andestablishing multiple regression equations, the results show that there is a certain relationship between 59 short-term rise of water level and some rainfall parameters. According to the analysis results of earthquake cases above ML2.0 and 13 non rainfall events around Bengbu, the surrounding area of Bengbu is mainly affected by ML2.0—3.0 earthquakes, with slightly weaker crustal stress release and minimal impact on underground fluids in Bengbu. Earthquakes above ML3.0 mainly occurred in the west of Anhui Province and near the Tanlu fault zone, with strong seismic activity. The observation data of underground fluid in Bengbu changed greatly and lasted longer. It is concluded that the short-time rise of water level is related to the change of crustal stress in Bengbu area while excluding the influence of rainfall. It can be seen that Bengbu monitoring center well has a certain prediction efficiency, which can reflect the changes of seismic stress field around Bengbu, and is of great significance for the analysis and prediction of earthquake precursor observation data.

     

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