- 産業: Government
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A gate at the spillway crest whose prime purpose is to control the release of debris and logs with a limited amount of water. It is usually a bottom hinged flap or Bascule gate.
Industry:Energy
An instrument used for measure water levels or pore water pressures in embankments, foundations, abutments, soil, rock, or concrete. (See instrumentation. )
Industry:Energy
Any secondary spillway that is designed to be operated infrequently, possibly in anticipation of some degree of structural damage or erosion to the spillway that would occur during operation.
Industry:Energy
Large logs, timbers, or steel beams placed on top of each other with their ends held in guides on each side of a channel or conduit so as to provide a cheaper or more easily handled means of temporary closure than a bulkhead gate.
Industry:Energy
A device located at an intake to prevent floating or submerged debris from entering the intake.
Industry:Energy
The finely divided residue resulting from the combustion of ground or powdered coal and which is transported from the firebox through the boiler by flue gases; known in the United Kingdom as pulverized fuel ash (pfa).
Industry:Energy
The longitudinal profile of the water surface in an open channel where the depth of flow has been increased by an obstruction, an increase in channel roughness, a decrease in channel width, or a flattening of the bed slope.
Industry:Energy
The most severe wind for generating waves that is reasonably possible at a particular reservoir. The determination will generally include results of meteorologic studies that combine wind velocity, duration, direction, fetch, and seasonal distribution characteristics in a realistic manner.
Industry:Energy
A wall built of relatively impervious material, usually of concrete or asphaltic concrete in the body of an embankment dam to prevent seepage.
Industry:Energy
A hole used to observe the groundwater surface at atmospheric pressure within soil or rock.
Industry:Energy
