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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 >MCKINNEY LAKE DAM MADE READY FOR NEW OWNER
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MCKINNEY LAKE DAM MADE READY FOR NEW OWNER

机译：麦金尼湖大坝已为新所有者做好准备

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The reservoir was lowered just enough to allow the required construction on the upstream slope as water was needed for hatchery operations throughout construction. The sequence of construction was as follows: 1. Trees and brush were cleared and grubbed from the embankment. 2. Steel sheet piling was driven to form the emergency spillway training walls, starting on the left side. 3. Topsoil was stripped from the embankment and stockpiled. 4. Excavation to subgrade was commenced within the sheet pile walls for the emergency spillway, starting on the left side. 5. Construction of embankment fills was commenced using material excavated for the emergency spillway, starting on the left side of the dam. 6. The emergency spillway underdrain, consisting of a 6-inch layer of filter sand overlain by a 12-inch layer of drainage stone, was constructed following excavation. 7. RCC placement for the left side of the emergency spillway was commenced. Concurrently, the right side emergency spillway was prepared for RCC placement. 8. Upon completion of the left side emergency spillway, RCC placement was commenced for the right side. The RCC mix design consisted of 450 lbs. of Type Ⅰ/Ⅱ Portland Cement, 262 lbs. of water, and 3,428 lbs. of a single gradation, modified NCDOT road base aggregate. The maximum size aggregate (MSA) was 1(1/2) inches. The specified 28-day compressive strength was 3,000 psi. The relatively high cement content was required because of poor grading of the sand fraction of the NCDOT base course aggregate and silt fines on the high side of the specified range for minus #200 sieve of 3 to 8% by weight.
机译：水库刚好降低到足以允许上游边坡进行所需的施工，因为整个施工过程中孵化场需要水。施工顺序如下：1.清除路堤上的树木和灌木丛。 2.从左侧开始，驱动钢板桩形成应急溢洪道训练墙。 3.从路堤上剥离表土并进行堆放。 4.从左侧开始，在应急溢洪道的板桩墙内开始挖掘路基。 5.从大坝的左侧开始，使用为应急溢洪道挖出的材料开始筑堤。 6.挖掘之后，建造了紧急溢洪道下水道，包括一个6英寸的滤砂层和一个12英寸的排水石层。 7.开始在应急溢洪道左侧放置RCC。同时，右侧紧急溢洪道已准备好用于碾压混凝土。 8.左侧紧急溢洪道完工后，开始在右侧进行RCC安置。 RCC混合料设计为450磅。 Ⅰ/Ⅱ型硅酸盐水泥的重量为262磅。水和3,428磅。单一等级，修改后的NCDOT公路路基骨料。最大尺寸总计（MSA）为1（1/2）英寸。规定的28天抗压强度为3,000 psi。由于NCDOT基层集料的砂级分等级不佳，以及200至3％（重量）至8％的＃200筛子在指定范围的高侧上的粉砂细度，因此需要相对较高的水泥含量。

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