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New Understanding of Variation Characteristics of Well Water Level in Majiagou Mine, Tangshan City, Hebei, China
ZHANG Suxin, SHENG Yanrui, DING Zhihua, ZHANG Ziguang
Hebei Earthquake Agency, Shijiazhuang 050021, China
摘要:
Based on the well water level data in Majiagou Mine in Tangshan City since 2000, it is suggested that the water level rise from 2008-2014 is possibly associated with reduced infiltration caused by less precipitation, together with the effect of less groundwater exploitation. However, the water level rise from 1992-1998 cannot be interpreted properly if we extend the data source back to 1991. After comparing the data with long-term water level data of five wells with different hydro-geological units in Tangshan and Qinhuangdao, the study indicates that the long-term water level variation cannot be only attributed to the effect of less precipitation and the control of groundwater exploitation, but also with the influence of regional stress field change. With the support of regional geological and tectonic information, combined with the comprehensive analysis of CBM data obtained from the coal field, new understandings of the dynamic characteristics of annual variation are obtained.
关键词:  Majiagou Well  Water level  Variation characteristics  Stress field
DOI:10.19743/j.cnki.0891-4176.202002008
分类号:
基金项目:This project is sponsored by the Key Project of Spark Program of Earthquake Sciences of Hebei Province:Tectonic Characteristics of the Northern Section of Tangshan Fault and Its Relation with Earthquakes(DZ20190424079).
New Understanding of Variation Characteristics of Well Water Level in Majiagou Mine, Tangshan City, Hebei, China
ZHANG Suxin, SHENG Yanrui, DING Zhihua, ZHANG Ziguang
Hebei Earthquake Agency, Shijiazhuang 050021, China
Abstract:
Based on the well water level data in Majiagou Mine in Tangshan City since 2000, it is suggested that the water level rise from 2008-2014 is possibly associated with reduced infiltration caused by less precipitation, together with the effect of less groundwater exploitation. However, the water level rise from 1992-1998 cannot be interpreted properly if we extend the data source back to 1991. After comparing the data with long-term water level data of five wells with different hydro-geological units in Tangshan and Qinhuangdao, the study indicates that the long-term water level variation cannot be only attributed to the effect of less precipitation and the control of groundwater exploitation, but also with the influence of regional stress field change. With the support of regional geological and tectonic information, combined with the comprehensive analysis of CBM data obtained from the coal field, new understandings of the dynamic characteristics of annual variation are obtained.
Key words:  Majiagou Well  Water level  Variation characteristics  Stress field