在无量水堰的前提条件下,为监测三道湾水电站坝基渗流量,在坝后覆盖层中布设测压管监测系统,在满足一定误差要求的条件下,依据水力坡降法推导出三道湾水电站坝后河床渗流量计算公式,计算得出2012年汛期坝后河床平均渗流量为58.06L/s,并基于坝后渗流的影响因素,提出增设坝肩绕渗监测系统的建议。 Under the premise of immeasurable weir, in order to monitor the seepage volume of dam foundation of Sandaowan Hydropower Station, a piezometer monitoring system was laid in the overburden of the dam. Under the condition of certain error, three ways of hydraulic slope descent were deduced The calculation formula of seepage flow rate of the river bed behind the dam in Wanwan Hydropower Station shows that the average seepage flow of the river bed after the dam in the flood season in 2012 is 58.06L / s. Based on the influencing factors of the seepage after the dam, the suggestion of adding the dam abutment percolation monitoring system is proposed.