密云水库白河主坝右岸渗流分析  

Seepage Analysis on the Right Bank of Baihe Main Dam of Miyun Reservoir

作　　者：杜玉凤 付沛煊 张淼 陈丽娜 DU Yufeng;FU Peixuan;ZHANG Miao;CHEN Lina(Beijing Miyun Reservoir Management Office,Beijing 101512,China;Beijing Yongding-River Management Office,Beijing 100072,China.)

机构地区：[1]北京市密云水库管理处,北京101512 [2]北京市永定河管理处,北京100072

出　　处：《海河水利》2025年第4期74-80,共7页Haihe Water Resources

摘　　要：白河发电隧洞是密云水库重要的输水建筑物,位于白河主坝右岸,工程安全至关重要。2015年南水北调多余来水调入密云水库,解决了水库多年来水减少、供水功能下降问题。隧洞承受正反两方向输水的压力,还经历了2021年历史最高库水位的考验。通过相关分析、对比分析、外水压力分析、位势分析等,发现2^(#)测压管管水位、位势变大,结合巡视检查,得出结论:2^(#)测压管附近隧洞裂缝已经发展,有一定安全风险;主坝右坝头渗流向不利方向发展。建议近期放空隧洞,对洞身作进一步复查,同时进行补充灌浆等加强措施;加强单位内部沟通与协调,及时掌握闸门启闭情况。The Baihe Power Tunnel is an important water conveyance structure of the Miyun Reservoir,located on the right bank of the Baihe Main Dam,and plays a vital role to construction safety.In 2015,more than half of the water from the South to North Water Diversion Project was transferred into the Miyun Reservoir,solving the problem of reduced water supply and decreased water supply function over the years.The Baihe Power Tunnel bears the pressure of the water supply channels in both positive and negative directions and has also undergone the test of the highest reservoir water level in history in 2021.Through relevant analysis,comparative analysis,external water pressure analysis,potential analysis,and other methods,it was found that the water level and potential of the No.2 pressure measuring pipe increased.Combined with inspection,it was concluded that cracks in the tunnel near the No.2 pipe have developed,posing certain safety risks;The seepage at the right head of the main dam is developing in an unfavorable direction.I suggest emptying the tunnel in the near future,further rechecking the tunnel body,and implementing additional grouting and other strengthening measures;Strengthen internal communication and coordination within the unit,and timely grasp the situation of gate opening and closing.

关 键 词：白河发电隧洞 南水北调 反向输水 白河主坝 渗流分析 

分 类 号：TV698.12[水利工程—水利水电工程]