摘要
对北京市范围内5口观测井进行了温度梯度精细测量。结果显示:不同区域受到的太阳辐射热的影响深度存在差异,可能与岩性及岩土中夹杂砂砾石颗粒的大小、多少有关;不同观测井的温度梯度值不同,最小的仅0.014℃/hm,最大者达3.376℃/hm,推测与井孔结构、地层岩性及构造条件等有关。水温传感器放置处的温度梯度特征很大程度上影响着水温微动态特征及水温前兆信息特征。
The temperature and its gradient of 5 wells in Beijing area are measured and analyzed. The result shows that the effect of sunadiation heat is regionally different and depends on the percentage of the sandy gravel particles and its size in the clay. The average water temperature gradient is different in different wells, the minimum value is 0. 014 ℃/hm, the maximum is 3. 376 ℃/hm. The difference is mainly related to hydrogeology structure, lithology of stratum and the tectonic condition. The micro-behavior characteristics of water temperature of well and the anomalies before an earthquake depend largely on the temperature gradient of the section in where the temperature sensor is fixed.
出处
《华北地震科学》
2016年第3期53-60,共8页
North China Earthquake Sciences
基金
2012年度北京市地震局任务性科技专项(JZX-201201)
2016年度北京市地震局任务性科技专项(JZX-201603)
关键词
北京区域
观测井温度梯度
太阳辐射热
Beijing area
temperature gradient of observation well
sunadiation heat
