共找到 195 条与 工程水文 相关的标准,共 13 页
Specifies methods of liquid flow measurement in open channels (particularly in irrigation canals) under steady or slowly varying flow conditions. The flumes used are designed to operate under both free-flow and submergence conditions.
Measurement of liquid flow in open channels; Parshall and SANIIRI flumes
Measurement of liquid flow in open channels; trapezoidal profile weirs
Measurement of flow of clean water under free flow conditions. Covers installation conditions, maintenance, head measurement, discharge, relationships, computation of discharge and errors in flow measurement.
Methods of measurement of liquid flow in open channels - Weirs and flumes - Rectangular broad-crested weirs
Guidance on the applicability and extension for use of existing methods of discharge measurement under conditions of high discharge. Site selection under those conditions is also considered.
Measurement of liquid flow in open channels - Stream flow measurement - Guide to the methods of measuring high discharges in rivers
Operational requirements, construction, calibration and maintenance of rotating element devices.
Measurement of liquid flow in open channels - Measuring instruments and equipment - Current meters incorporating a rotating element
This Technical Report provides an alternative to the procedure given in ISO 748 : 1979, annex C, for the determination of the wetline correction.
Measurement of liquid flow in open channels; determination of the wetline correction
Liquid flow measurements in open channels; Stage-fall-discharge relations
Liquid flow measurement in open channels; General guidelines for the selection of methods
Method for the measurement of subcritical flow in small rivers and articifial channels.
Methods of measurement of liquid flow in open channels. Weirs and flumes. V-shaped broad crested weirs
Methods for steady flow conditions. Examples are given on the computation of flow rate and associated uncertainty for modular and drowned flow conditions.
Methods of measurement of liquid flow in open channels - Weirs and flumes - Triangular profile weirs
Gives a standard basis for the determination of individual components of the total error for velocity area methods.
Measurement of liquid flow in open channels - Stream flow measurement - Collection and processing of data for determination of errors in measurement
Specifies a method for the measurement of subcritical flow in small rivers and artificial channels using V-shaped broad-crested weirs. Covers also selection of site and installation conditions, measurement of head, discharge equations and errors in flow measurement and contains three annexes.
Liquid flow measurement in open channels by weirs and flumes; V-shaped broad-crested weirs
Liquid flow measurement in open channels; Guidelines for the selection of flow gauging structures
Liquid flow in open channels; Sediment in streams and canals; Determination of concentration, particle size distribution and relative density
Specifies methods for the measurement of the flow of water in open channels under steady flow conditions using triangular profile weirs. The flow conditions considered are steady flows which are uniquely dependent on the upstream head and drowned flows which depend on downstream as well as upstream levels.
Liquid flow measurement in open channels by weirs and flumes; Triangular profile weirs
Specifies methods of determining the position of hydrometric boats with respect to known points on the banks of rivers or estuaries. Applies to conventional surveying techniques and, in recognition of the availability of more sophisticated equipment, describes the principles of operation of currently available electronic positioning equipment.
Liquid flow measurement in open channels; Position fixing equipment for hydrometric boats
Hydrometric data transmission systems; Part 1 : General
Specifies a method for the estimation of subcritical flow of clear water in smooth, essentially horizontal, straight open channels with a vertical drop and discharging freely. Gentle positive slopes not greater than 1 in 2000 are admissible. Covers channels with the following types of cross-section, the nappe being confined: a) trapezoidal; b) triangular; c) parabolic; d) circular.
Measurement of liquid flow in open channels by weirs and flumes; End depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method)
Summarizes the results of investigations of the total error in measurements of flow by velocity-area methods. Describes the procedure used and types of errors (section one), and gives recommendation for the collection of data for investigations of errors (section two) with a view to supplementing the information given in ISO 1088.
Liquid flow measurement in open channels; Velocity-area methods; Investigation of total error
Deals with the measurement of flow in rivers and artificial channels under steady or slowly varying flow conditions, using certain types of standing-wave (or critical depth) flumes. An annex gives the guidelines for the selection of weirs and flumes for the measurement of the discharge of water in open channels.
Liquid flow measurement in open channels; Rectangular, trapezoidal and U-shaped flumes
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