- 行业: Government
- Number of terms: 10940
- Number of blossaries: 0
- Company Profile:
For a reservoir with a fixed overflow sill the lowest crest level of that sill. For a reservoir whose outflow is controlled wholly or partly by moveable gates, siphons or other means, it is the maximum level to which water may rise under normal operating conditions, exclusive of any provision for flood surcharge.
Industry:Energy
A room from which a gate or valve can be operated, or sometimes in which the gate is located.
Industry:Energy
The storage that lies below the invert of the lowest outlet and that, therefore, cannot readily be withdrawn from the reservoir.
Industry:Energy
An instrument for measuring pressure within a mass of soil, rock, or concrete or at an interface between one and the other. These inlcude Gloetzl cell, Carlson Load cell, vibrating-wire gauges, flat jacks and total pressure cell.
Industry:Energy
Instruments that measure movements transverse and along a joint or crack.
Industry:Energy
A postulated seismic event, specified in terms of specific bedrock motion parameters at a given site, which is used to evaluate the seismic resistance of manmade structures or other features at the site.
Industry:Energy
A project designed for irrigation, power, flood control, municipal and industrial, recreation, and fish and wildlife benefits, in any combinations of two or more. Contrasted to single-purpose projects serving only one need.
Industry:Energy
Placed at the beginning of an outlet-works waterway (power conduit, water supply conduit), the intake establishes the ultimate drawdown level of the reservoir by the position and size of its opening(s) to the outlet works. The intake may be vertical or inclined towers, drop inlets, or submerged, box-shaped structures. Intake elevations are determined by the head needed for discharge capacity, storage reservation to allow for siltation, the required amount and rate of withdrawal, and the desired extreme drawdown level.
Industry:Energy
An active fault that is judged capable of producing macroearthquakes and exhibits one or more of the following characteristics:
: Movement at or near the ground surface at least once within the past 35,000 years. : Macroseismicity (3. 5 magnitude or greater) instrumentally determined with records of sufficient precision to demonstrate a direct relationship with the fault. : A structural relationship to a capable fault such that movement on one fault could be reasonably expected to cause movement on the other. : Established patterns of microseismicity that define a fault, with historic macroseismicity that can reasonably be associated with the fault.
Industry:Energy
