龙羊峡水电站近坝库岸滑坡体 地下水位监测及变化特征

Monitoring and Variation Characteristics of Groundwater Level in the Landslide Body Near the Dam Bank of Longyangxia Hydropower Station

龙羊峡水电站库水位自2005年、2009年、2012年及2018年后连续几年高水位运行,近坝库岸滑坡体龙西、农场地下水持续在孔内水位较高的情况下运行。随着龙羊峡大坝运行时间的增加,这些问题是否会影响到滑坡体的稳定,是水电站大坝安全运行重点关注的问题,因此对库区滑坡体龙西地下水的稳定性分析是必要的。龙羊峡水电站近坝库岸滑坡体地下水位测量是滑坡体预警的参考性判据中比较重要的一种。通过对龙羊峡水电站近坝库岸滑坡体地下水位监测资料的分析,找出水位出现升、降变化的原因,为滑坡体岸坡稳定性分析提供依据。

The water level of the Longyangxia Hydropower Station has been running at high water levels for several consecutive years since 2005,2009,2012 and 2018.The landslide body near the dam bank in Longxi and farm groundwater continued to operate at high water levels in the boreholes.With the increase of the operating time of the Longyangxia Dam,whether these problems will affect the stability of the landslide mass is the key concern for the safe operation of the hydropower station dam.Therefore,it is necessary to analyze the stability of the Longxi groundwater of the landslide body in the reservoir area.The groundwater level measurement of the landslide body near the dam bank of Longyangxia Hydropower Station is one of the more important reference criteria for landslide body early warning.By analyzing the monitoring data of the groundwater level of the landslide body near the dam bank of the Longyangxia Hydropower Station,we can find out the reasons for the rise and fall of the water level,and provide the basis for the stability analysis of the bank slope of the landslide body.