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自80年代末,在首都圈陆续布设了一些地温测点,以开展动态地温前兆观测。经多年实践验证,精密地温动态观测方法监测地震的能力得到充分肯定和广泛关注。河北省阳原县三马坊地温测点,自1988年10月开始观测以来,记录到多次明显的短临前兆信息,为首都圈众多地温观测点所不多见。笔者曾做过一些研究。随着观测资料的不断积累和预报研究的深入,对三马坊测点的映震能力及特征有必要作进一步探讨和研究。二、井孔概况三马坊地温测点位于河北省阳原县三马坊温泉疗养院内,在桑干河的北侧,处在北东向桑干河断裂和北北西向化稍营断裂的交汇部位(图1)。井深200m,测温探头位于水面下10多米深处。该井井孔封闭良好,井水自流,系承压自流水。水压压差大,流量约为
Since the late 1980s, some geothermal measuring points have been set up in the metropolitan area in order to carry out the dynamic observation of temperature precursors. After many years of practical verification, the ability of precise temperature dynamic observation to monitor earthquakes has been fully affirmed and widely concerned. Yangma County, Hebei Province, Sanma Square geothermal measurement point, since the beginning of observation in October 1988, recorded several clear short-term precursory information for the metropolitan area many geothermal observation point rare. I have done some research. With the continuous accumulation of observational data and the advancement of forecasting research, it is necessary to further study and study the mapping ability and characteristics of Sanmafang measuring point. Second, the hole profile Sanmafang geotemperature measuring point is located in Sanmafang Spa Yangyuan County, Hebei Province, sanatorium in the north side of the Sanggan River, in the north-east Sangganhe fault and the north-west strike a little camp Intersection (Figure 1). Well depth 200m, temperature probe is located in the water more than 10 meters deep. The borehole well closed, well water gravity, the system pressure from the water. Water pressure, flow rate is about