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首页> 外文会议>Association of State Dam Safety Officials, Inc. 2002 Annual Conference Sep 8-11, 2002 Tampa, Florida >CONSTRUCTION OF SUPPLEMENTAL PRINCIPAL SPILLWAY AT CLEAR FORK OF THE TRINITY, SITE 23
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CONSTRUCTION OF SUPPLEMENTAL PRINCIPAL SPILLWAY AT CLEAR FORK OF THE TRINITY, SITE 23

机译：在三叉戟透明叉处建造辅助主溢洪道，站点23

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Clear Fork, Site 23 is a 49-foot-high homogeneous earthfrll dam located on Squaw Creek in the Willow Park community of Parker County, Texas, about 20 miles west of Fort Worth, Texas. The dam was constructed in 1957 under Public Law 534, administered by the USDA, Natural Resources Conservation Service. The dam is operated and maintained by Parker County Soil and Water Conservation District to provide sediment storage, flood control, and supplemental irrigation water for a nearby golf course. The dam was constructed as a Low Hazard dam. Subsequent development of the area downstream of the dam resulted in upgrading the hazard classification to High Hazard. The dam was rehabilitated in 2000-2001 to reduce the duration of flood storage and meet high hazard hydrologic criteria. One of the modifications to address the deficiencies was constructing a 30-inch inside diameter auxiliary principal spillway (outlet works) conduit through the embankment. This discharge feature was constructed by boring and jacking a steel carrier pipe through the embankment and subsequently lining the pipe with an internal lining pipe. The embankment/carrier pipe contact and the carrier/liner pipe annulus were both grouted. Additional components of the auxiliary principal spillway include a filter diaphragm around the conduit, a concrete hooded inlet structure with trashrack, and a lined plunge basin. Constructing additional discharge capacity using this method was cost effective, reduced the exposure to inflow during construction, and did not require a large excavation and reconstruction of the embankment.
机译：站点23的透明叉是49英尺高的均匀泥石坝，位于德克萨斯州帕克县Willow Park社区Willaw Park社区的Squaw Creek，距德克萨斯州沃思堡以西约20英里。根据美国第534号公法，该水坝于1957年建造，由美国农业部自然资源保护局负责管理。该水坝由帕克县水土保持区负责运营和维护，为附近的高尔夫球场提供沉积物存储，防洪和补充灌溉用水。该水坝是低危害水坝。大坝下游区域的后续开发导致将危险等级升级为高危险等级。大坝于2000年至2001年进行了修复，以减少蓄洪时间并符合高危害水文标准。解决缺陷的一种方法是建造一条30英寸内径的辅助主溢洪道（出口工程），穿过路堤。通过在钢堤上钻孔和顶起钢管，然后用内部衬管对管道进行衬里，可以构造此排放特征。路堤/支管接触和支管/衬管环空均被灌浆。辅助主溢洪道的其他组件包括围绕导管的过滤膜片，带垃圾桶的混凝土带帽入口结构以及带衬里的下沉式水盆。使用这种方法建造额外的排水能力具有成本效益，减少了施工期间的流入量，并且不需要大的开挖和路堤改造。

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