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EMBANKMENT MODIFICATIONS AT FOLSOM RESERVOIR

机译：福尔索姆水库的路堤修改

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Folsom Reservoir is located approximately 15 northeast of Sacramento, California. It is composed of 11 earthen dams and dikes, and a main concrete dam. The reservoir is operated to provide flood protection to Sacramento and to provide agricultural and municipal water as part of Reclamation's Central California Project. As part of Reclamation's Safety of Dams program, the Folsom facility is regularly monitored and evaluated for dam safety. During regularly scheduled evaluations, risk under certain loading conditions was judged to justify action according to Reclamation guidelines. A Corrective Action Study was undertaken to plan modifications to reduce risk. Phase I modifications were begun in 2008 to address internal erosion deficiencies related to static and hydrologic loading conditions. Studies, design, and construction continue for the balance of earthen embankments.rnThe Right and Left Wing Dams are located on either side of the concrete dam, and were included in Phase I activities. During risk analyses, the failure mode identified as most critical involved internal erosion initiated by flood loading. To remediate this condition, the upper 20 feet of the downstream shell was removed, exposing the core; and a thin chimney filter was installed to provide filtering and drainage capabilities.rnDike 5 is located north of the main concrete dam, and was included in Phase I activities. Risk analyses identified critical failure modes involving internal erosion under both static and remote hydrologic loading conditions. To reduce risk, portions of the downstream shell were removed, and a thin chimney filter and toe drain were installed. This system provides both drainage and filter protection over the entire height of the dike.rnSeveral other dikes and dams are also to be modified in future phases of design and construction.
机译：佛森水库位于加利福尼亚萨克拉曼多东北约15号。它由11个土坝和堤坝和一个主要的混凝土坝组成。该水库的运营旨在为萨克拉曼多提供防洪保护，并作为Reclamation中部加州项目的一部分提供农业和市政用水。作为Reclamation大坝安全计划的一部分，Folsom设施将得到定期监测和评估，以确保大坝安全。在定期进行的评估中，根据填海指南，判断在某些负荷条件下的风险足以证明采取措施的合理性。进行了纠正措施研究以计划修改措施以降低风险。第一阶段的改造于2008年开始，以解决与静态和水文负荷条件有关的内部侵蚀缺陷。研究，设计和施工仍在继续进行，以平衡土堤。rn右翼和左翼水坝位于混凝土水坝的两侧，并已包括在第一阶段活动中。在风险分析过程中，确定为最关键的破坏模式涉及洪水荷载引发的内部侵蚀。为了补救这种情况，拆除了下游壳的上部20英尺，露出了岩心。 rnDike 5位于主要混凝土大坝的北部，属于第一阶段活动，它安装了薄的烟囱过滤器以提供过滤和排水功能。风险分析确定了在静态和远程水文荷载条件下涉及内部侵蚀的严重破坏模式。为了降低风险，去除了下游壳体的一部分，并安装了薄的烟囱过滤器和脚趾排水管。该系统可在堤防的整个高度上提供排水和过滤保护。在未来的设计和施工阶段，还将对其他几个堤防和大坝进行改造。

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  • 会议地点 Sacramento CA(US)
  • 作者

    Greg Eddy; rnRon Oaks; rnM. Jonathan Harris;

  • 作者单位

    Geotechnical Engineering and Embankment Dams Branch, Group 3, Technical Service Center, Bureau of Reclamation, Department of Interior, P.O. Box 25007 (86-68313), Denver, CO 80225;

    rnGeotechnical Engineering and Embankment Dams Branch, Group 2, Technical Service Center, Bureau of Reclamation, Department of Interior, P.O. Box 25007 (86-68312), Denver, CO 80225;

    rnGeotechnical Engineering and Embankment Dams Branch, Group 3, Technical Service Center, Bureau of Reclamation, Department of Interior, P.O. Box 25007 (86-68313), Denver, CO 80225;

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  • 正文语种 eng
  • 中图分类 挡水坝;
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