平凉铁路小区水位上升原因调查分析与讨论
Investigation Analysis and Discussion on the Cause of Water Level Rise in Pingliang Railway District

通过对仪器观测系统、仪器供电避雷接地电阻、电源电压检查、水位现场校测，观测井点降雨与水位资料对比，周边不同测点水位观测资料对比，同井不同深度水温观测资料及平凉华能发电厂多年来地下水开采量的对比，分析了平凉铁路小区水位上升变化的原因。通过周围环境调查后发现，该小区水位上升是由于平凉华能发电厂使用的分布在市区13口抽水井多年来开采量减少引起的，是地震前兆异常的可能性不大。
This paper analyzed the reason for the rise of water level in Pingliang Railway district. We calibrated the measurement system, lightning grounding resistance of power supply system, electric source voltage and on-site water level. We also investigated and compared the data of rain-fall and water level at the observation site, the water level data at other observation sites around the district, water temperatures of different depth in the well, the groundwater exploitation amount of Pingliang Huaneng power plant and the environment around the area. We have found that the rise of water level is caused by the decrease of groundwater exploitation of the 13 water wells owned by Huaneng power plant which is distributed over Pingliang area. It is unlikely to be the precursor of earthquake.