17.120.20 明渠中流量的测量 标准查询与下载



共找到 565 条与 明渠中流量的测量 相关的标准,共 38

This International Standard specifies a method of steady-flow measurement in open channels using a trapezoidal broad-crested weir under modular and non-modular conditions. Consideration is given to the use of the weir in both rectangular and trapezoidal channels. Limitations to the use of the weir are given in 7.6 and 8.6.

Hydrometric determinations -- Flow measurement in open channels using structures -- Trapezoidal broad-crested weirs

ICS
17.120.20
CCS
发布
2013-12-31
实施

This International Standard specifies methods for determining the concentration, particle-size distribution and relative density of sediment in streams and canals. NOTE The detailed methods of analysis are set out in the annexes. Annexes A, B and C deal with the determination of the suspended sediment concentration by evaporation and filtration. Annexes D and E deal with the particle-size analysis of suspended sediment and outline the procedures for the bed-load and bed material sediment, respectively. Annex F deals with the determination of the relative density of sediment and Annex G with the determination of particle size distribution characteristics.

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

ICS
17.120.20
CCS
发布
2013-12-31
实施

This International Standard gives requirements for the establishment and operation of a gauging station for the measurement of stage, or stage and discharge, of a lake, reservoir, river or canal or other artificial open channel. It also describes how a gauging station utilizing one of the measurement methods listed should be operated and maintained.

Hydrometry.Selection, establishment and operation of a gauging station

ICS
17.120.20
CCS
P12
发布
2013-12-15
实施

이 표준은 개수로의 유량을 측정하는 유속-면적법1)에 대하여 규정한다.

Method of measurements for flow discharge in open channels ? Velocity-area methods

ICS
17.120.20
CCS
B11
发布
2013-12-09
实施
2013/12/9

Method of measurements for flow discharge in open channels?Velocity-area methods

ICS
17.120.20
CCS
发布
2013-12-09
实施

本标准规定了以明渠堰槽流量计为计量器具测量排污流量和累积量的术语和定义、工作原理、技术要求和检验项目等。 本标准适用于排污计量中最常用的明渠堰槽流量计 (矩形薄壁堰和巴歇尔槽)及与堰槽配接水位传感器或水位流量显示仪表构成的明渠流量计。

Technical specification for measuring sewage flow by open channel weir and flume flowmeter

ICS
17.120.20
CCS
N42
发布
2013-11-15
实施
2014-02-01

This Technical Specification specifies the technical requirements that should be considered in designing and operating hydrometric data transmission systems and the necessary functions of those systems.

Hydrometry -- Hydrometric data transmission systems - Specification of system requirements

ICS
17.120.20
CCS
发布
2013-09-09
实施

Abstract ISO/TS 25377:2007 provides an understanding of the nature of measurement uncertainty and its significance in estimating the quality of a measurement or a determination in hydrometry. It is applicable to flow measurements in natural and man-made channels. Rainfall measurements are not covered.

Hydrometric uncertainty guidance (HUG)

ICS
17.120.20
CCS
发布
2013-09-09
实施

Abstract For determining the discharge in open channels by the velocity-area method, components of the flow need to be measured. The total uncertainty in discharge is a combination of the uncertainties in these components. This ISO-Standard specifies a standard basis for collecting and processing the data required to compute the component uncertainties for determining the total uncertainty in discharge.

Liquid flow measurement in open channels -- Velocity-area methods -- Collection and processing of data for determination of errors in measurement

ICS
17.120.20
CCS
发布
2013-09-09
实施

This International Standard gives guidance on methods for sampling of both non-cohesive sand bed material and cohesive bed material (both of which may contain some fine gravel), principally for the purpose of determining the grain size frequency distribution of the bed material in open channels. NOTE — Other publications of relevance to samplers and sampling techniques are listed in the bibliography in annex A.

Measurement of liquid flow in open channels - Bed material sampling

ICS
17.120.20
CCS
发布
2013-09-09
实施

Flow measurement structures. Rectangular, trapezoidal and U-shaped flumes

ICS
17.120.20
CCS
A42
发布
2013-02-28
实施
2013-02-28

This International Standard specifies methods for 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. A wide variety of flumes has been developed, but only those which have received general acceptance after adequate research and field testing, and which therefore do not require in situ calibration, are considered. The flow conditions considered are uniquely dependent on the upstream head, i.e. subcritical flow must exist upstream of the flume, after which the flow accelerates through the contraction and passes through its critical depth (see Figure 1). The water level downstream of the structure is low enough to have no influence upon its performance. This International Standard is applicable to three commonly used types of flumes, covering a wide range of applications, namely rectangular-throated, trapezoidal-throated and U-throated. Typical field installations are shown in Figure 2. Site conditions are important and Figure 3 shows acceptable velocity profiles in the approach channel. Detailed illustrations of the three types of flumes covered by this International Standard are given as follows: a) rectangular-throated (see Figure 4); c) U-throated, i.e. round-bottomed (see Figure 6). b) trapezoidal-throated (see Figure 5); It is not applicable to a form of flume referred to in the literature — sometimes called a “Venturi” flume — in which the flow remains subcritical throughout. NOTE This form is based on the same principle as a Venturi meter used within a closed conduit system and relies upon gauging the head at two locations and the application of Bernoulli’s energy equation.

Flow measurement structures - Rectangular, trapezoidal and U-shaped flumes

ICS
17.120.20
CCS
P12
发布
2013-02
实施

1.1 This test method covers measurement of the volumetric flowrate of water and wastewater in channels with thin-plate weirs. Information related to this test method can be found in Rantz (1)2 and Ackers (2). 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Open-Channel Flow Measurement of Water with Thin-Plate Weirs

ICS
17.120.20
CCS
发布
2013-01-01
实施

Diese Internationale Norm enthalt Anforderungen zur Einrichtung und zum Betrieb einer Pegelstation zum Messen des Wasserstands oder des Wasserstands und Durchflusses eines Sees, Stausees, Flusses, Kanals oder eines anderen kunstlichen offenen Gerinnes. Sie beschreibt auch, wie eine Pegelstation, an der eine der aufgefuhrten Messverfahren angewendet wird, betrieben und unterhalten werden sollte. Es werden Anforderungen fur reine Wasserstands-Pegel, fur Pegel mit Wasserstand-Durchfluss-Beziehung und fur Pegel mit direkter Durchflussmessung in naturlichen Gerinnen sowie fur Wasserstand-Durchfluss-Pegel mit Messbauwerken bereitgestellt. Zusatzlich werden einige Anforderungen zu Messungen unter schwierigen Bedingungen gegeben, wie zum Beispiel bei Eis.

Hydrometry - Selection@ establishment and operation of a gauging station

ICS
17.120.20
CCS
P12
发布
2013
实施
2013-12

本标准规定了重庆市行政区域范围内的防汛水文站、防汛水位站、巡测断面的测验方法、测验技术、测验资料整理、水文调查等技术要求。 本标准适用于重庆市行政区域内范围内天然河流、湖泊、水库、人工水道和水工程附近河段的防汛水文站、防汛水位站、巡测断面水文测验、调查和资料分析整理。 国家流域管理机构在重庆市行政区域内的水文巡测工作可以参照本标准执行。

Technical Standards for Hydrological Survey in Chongqing

ICS
17.120.20
CCS
P 93
发布
2012-11-28
实施
2013-01-01

Hydrometry. Methods for assessment of reservoir sedimentation

ICS
17.120.20
CCS
N12
发布
2012-08-31
实施
2012-08-31

Hydrometric determinations. Flow measurement in open channels using structures. Flat-V weirs

ICS
17.120.20
CCS
N12
发布
2012-08-31
实施
2012-08-31

This international standard provides summary of recommended methods for the determination of liquid flow in tidal channels , special consideration being given to those techniques that are either unique to or particularly appropriate for application under tidal conditions , including treatment of uncertainties. Reference is also made where appropriate, to methods for the determination of flow in non-tidal channels , but attention is drawn to their limitations with respect to practicality and/or uncertainty. This international standard does not describe altemative methods , such as the use of weirs , flumes , dilution gauging , salt velocity and floats, although they might be suitable under certain conditions , especially where the effect of tides only impedes and does not stop or reverse the passage of stream flow. These methods are described in detail other international standards

Hygrometry Measurement of liquid flow in open channels under tidal conditions

ICS
17.120.20
CCS
发布
2012-08-09
实施

This International Standard describes methods for the measurement of temporal and spatial changes in reservoir capacities due to sediment deposition.

Hydrometry - Methods for assessment of reservoir sedimentation

ICS
17.120.20
CCS
A52
发布
2012-08
实施

Hydrometric determinations - Flow measurement in open channels using structures - Flat-V weirs

ICS
17.120.20
CCS
A52
发布
2012-08
实施



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