Paul Voebel
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« on: December 17, 2010, 04:24:08 AM » |
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At first glance you might mistake a bell-mouth spillway for a watery vortex into another dimension. What can only be described as a giant hole in the water is actually a method for controlling the release of flows from a dam or levee into a downstream area. These spillways help prevent floods from ‘dam’-aging or destroying a dam.
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Paul Voebel
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« Reply #1 on: December 17, 2010, 04:24:51 AM » |
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Paul Voebel
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« Reply #2 on: December 17, 2010, 04:26:27 AM » |
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SPILLWAYS - A spillway is a structure used to provide for the controlled release of flows from a dam or levee into a downstream area, typically being the river that was dammed - Spillways release floods so that the water does not overtop and damage or even destroy the dam. Except during flood periods, water does not normally flow over a spillway - In contrast, an intake is a structure used to release water on a regular basis for water supply, hydroelectricity generation, etc. - Floodgates and fuse plugs may be designed into spillways to regulate water flow and dam height - Other uses of the term “spillway� include bypasses of dams or outlets of a channels used during highwater, and outlet channels carved through natural dams such as moraines
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Paul Voebel
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« Reply #3 on: December 17, 2010, 04:27:04 AM » |
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Paul Voebel
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« Reply #4 on: December 17, 2010, 04:28:11 AM » |
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BELL-MOUTH SPILLWAYS - Some spillways are designed like an inverted bell so that water can enter all around the perimeter. These uncontrolled spillway devices are also called: morning glory, plughole, glory hole, or bell-mouth spillways - In areas where the surface of the reservoir may freeze, bell-mouth spillways are normally fitted with ice-breaking arrangements to prevent the spillway from becoming ice-bound
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Paul Voebel
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« Reply #5 on: December 17, 2010, 04:29:24 AM » |
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