红寺堡地电阻率NS向测值趋势下降原因分析

The Causes of the Measured Value’s Downward Trend of Ground Resistivity in NS Direction in Hongsibu Station

红寺堡地电阻率NS向测值自2016年11月以来出现下降趋势,在现场巡查、观测系统检查的基础上,分析了降雨、灌溉对地电阻率的影响。研究结果表明,该趋势下降变化与上述因素并无直接关系,可能与区域应力场变化等有关。

Since November 2016, the measured value of ground resistivity in NS direction in Hongsibu Sta-tion has shown a downward trend. On the basis of on-site inspection and observation, the influ-ence of rainfall and irrigation on ground resistivity was analyzed. Research results show that the downward trend was not caused by the above factors, may be associated with the change of re-gional stress field, etc.