珠窝水库是永定河上第二个梯级水库,它担负着下马岭水电站和京西火电厂的供水任务。大坝是建筑在砂砾石软基上的砼重力坝,由五个溢流坝段和两个非溢坝段组成。珠窝大坝有严重缺陷,每个溢流坝段中间部位有一条顺河向贯穿裂缝,深达八米左右。虽然作过一些工程处理措施,但不够彻底,裂 Zhuwo Reservoir is the second cascade reservoir on the Yongding River, which is responsible for the water supply tasks of Xiamaling Hydropower Station and Jingxi Thermal Power Station. The dam is a concrete gravity dam built on sand and gravel soft foundation and consists of five overflow dam sections and two non-overflow dam sections. Beads and dams have serious defects. Each overflow dam section has a middle section running along the river and reaching a depth of about eight meters. Although some engineering measures have been made, it is not thorough enough