P12 工程水文 标准查询与下载



共找到 195 条与 工程水文 相关的标准,共 13

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

ICS
17.120.20
CCS
P12
发布
1992-09
实施

Measurement of liquid flow in open channels; trapezoidal profile weirs

ICS
6955
CCS
P12
发布
1992-09
实施

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

ICS
17.120.20
CCS
P12
发布
1990-08-31
实施
1990-08-31

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

ICS
17.120.20
CCS
P12
发布
1990-06-29
实施
1990-06-29

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

ICS
CCS
P12
发布
1989-09-29
实施
1989-09-29

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

ICS
17.120.20
CCS
P12
发布
1989-07
实施
1989-07-01

Liquid flow measurements in open channels; Stage-fall-discharge relations

ICS
17.120.20
CCS
P12
发布
1986-12
实施

Liquid flow measurement in open channels; General guidelines for the selection of methods

ICS
6955
CCS
P12
发布
1986-11
实施

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

ICS
17.120.20
CCS
P12
发布
1986-09-30
实施
1986-09-30

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

ICS
17.120.20
CCS
P12
发布
1986-01-31
实施
1986-01-31

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

ICS
17.120.20
CCS
P12
发布
1986-01-31
实施
1986-01-31

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

ICS
17.120.20
CCS
P12
发布
1985-11
实施

Liquid flow measurement in open channels; Guidelines for the selection of flow gauging structures

ICS
6955
CCS
P12
发布
1985-10
实施

Liquid flow in open channels; Sediment in streams and canals; Determination of concentration, particle size distribution and relative density

ICS
17.120.20
CCS
P12
发布
1985-03
实施

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

ICS
17.120.20
CCS
P12
发布
1984-12
实施

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

ICS
17.120.20
CCS
P12
发布
1984-12
实施

Hydrometric data transmission systems; Part 1 : General

ICS
6955
CCS
P12
发布
1984-12
实施

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)

ICS
17.120.20
CCS
P12
发布
1984-12
实施

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

ICS
17.120.20
CCS
P12
发布
1983-07
实施

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

ICS
17.120.20
CCS
P12
发布
1983-07
实施



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