永定河官厅山峡冬季生态补水损失分析

Preliminary analysis on the loss of winter ecological water supplement in Guanting gorge of Yongding River

为研究永定河冬季生态补水期间官厅山峡沿途水量损失情况,以实测数据为基础,运用水量平衡原理,分区计算了山峡段各区间损失水量和输水损失率。结果表明:本次永定河冬季生态补水输水总量为2713.34万m^(3),输水损失为2330.14万m^(3),损失率为85.88%,且主要为渗漏损失;损失主要集中发生于陇驾庄至三家店枢纽区间,该区间损失水量占全部输水损失的40.02%,认为主要是受到河床地层岩性影响,渗漏损失量使该处地下水明显回升。测算结果初步摸清沿途损失规律,对今后持续开展永定河生态水量调度、提高调度精细化水平具有一定的参考价值。

In order to study the water loss along the Guanting gorge of Yongding River during the period of ecological water supplement in winter,based on the measured data and using the principle of water balance,we calculated the water loss and rate of conveyance loss of each section of the Guanting gorge.The results showed that the total amount of winter ecological water conveyance to Yong Ding River is 27.13 million m^(3),the water loss during water conveyance is 23.30 million m^(3)during the water resource supplement.The rate of conveyance loss was 85.88%and the main loss was leakage.The loss mainly occurred in between Longjiazhuang and Sanjiadian which accounted for 42.02%of the total water transfer loss.It was considered that the loss is mainly affected by the lithology of the riverbed stratum,and the leakage loss affected the regional groundwater rise obviously.The calculation results gave certain reference for the sustainable development of Yongding River ecological water regulation.