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温度是地下水渗流的天然示踪剂。地层温度的分布在正常情况下是连续有规律的,温度是随地层深度的增加而增大。但在有地下水渗流的影响下,地层的温度分布会产生异常现象。通过采集钻孔中的温度数据,绘制温度曲线;根据温度的异常变化判断地层渗流的情况,如确定地层集中渗漏通道以及地下水的补给关系等信息。利用温度示踪法对西部某水电站进行了地下水探测分析;根据地层中温度的异常,探测出集中渗漏水是从水平排水条带汇集到坝后量水堰,由此提出了相应的处理措施。
Temperature is a natural tracer of groundwater seepage. The distribution of formation temperature is continuous and regular under normal conditions, and the temperature increases with the increase of formation depth. However, under the influence of groundwater seepage, the temperature distribution in the formation will be abnormal. By collecting the temperature data in the borehole, the temperature curve is plotted, and the seepage of the formation is judged according to the abnormal temperature change, such as determining the leakage channel of the formation and the recharge relationship of the groundwater. Based on the temperature anomaly in the strata, it is detected that the concentrated seepage water is collected from the horizontal drainage strips to the weir of the dam after the temperature tracing method, and the corresponding treatment measures are put forward .