SY/T 4100-2024 Technical specification for engineering survey in beach-shallow sea English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 4100-2024
Replaces SY/T 4100-2012
Technical specification for engineering survey in beach-shallow sea
滩海工程测量技术规范
(English Translation)
Issue date: 2024-09-24 Implementation date: 2025-03-24
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Basic Requirements
4.1 General Provisions
4.2 Survey Benchmarks
4.3 Survey Accuracy
5 Horizontal Control Survey
5.1 General Provisions
5.2 Satellite Positioning Survey
6 Vertical Control Survey
6.1 General Provisions
6.2 Leveling
6.3 GNSS Leveling (Satellite Positioning Altitude Survey)
7 Beach-Shore Topographic Survey
7.1 General Provisions
7.2 Mapping Control Survey
7.3 RTK Mapping
7.4 Total Station Mapping
7.5 Low-Altitude Digital Photogrammetric Mapping
7.6 Airborne LiDAR Scanning Mapping
7.7 Digital Line Graphic (DLG)
7.8 Digital Elevation Model (DEM)
7.9 Digital Orthophoto Map (DOM)
8 Sounding (Bathymetric Survey)
8.1 General Provisions
8.2 Water Level Control
8.3 Sounding Positioning
8.4 Depth Measurement
8.5 GNSS Tidal-Independent Bathymetry
8.6 Bathymetric Data Processing
8.7 Bathymetric Survey Results and Data
9 Engineering Mapping and Construction Survey
9.1 General Provisions
9.2 Beach-Shore Engineering Mapping
9.3 Artificial Island and Platform Survey
9.4 Construction Survey
9.5 Results and Data
10 Route Survey
10.1 General Provisions
10.2 Horizontal and Vertical Control for Route Engineering
10.3 Road and Seawall Survey
10.4 Pipeline, Power Line, and Communication Line Survey
Technical specification for engineering survey in beach-shallow sea
1 Scope
This document specifies the work content and technical requirements for engineering surveying in beach-shallow sea areas, and describes the survey methods.
This document is applicable to the surveying and mapping work during the engineering design and construction phases of beach-shallow sea oil and gas fields.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 12319 Symbols, abbreviations and terms used on Chinese charts
GB 12327 Specifications for hydrographic survey
GB/T 20257.1 Cartographic symbols for national fundamental scale maps — Part 1: Specifications for cartographic symbols of 1:500, 1:1000 & 1:2000 topographic maps
GB/T 20257.2 Cartographic symbols for national fundamental scale maps — Part 2: Specifications for cartographic symbols of 1:5000 & 1:10000 topographic maps
GB 50026 Standard for engineering surveying
CH/T 3003 Specifications for indoor work of low-altitude digital aerial photography
CH/T 3004 Specifications for field work of low-altitude digital aerial photography
CH/T 3005 Specifications for low-altitude digital aerial photography
CH/T 8024 Technical specification for airborne laser radar data acquisition
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
beach-shallow sea
A general term for the supratidal zone, intertidal zone, and adjacent shallow sea areas.
[Source: SY/T 0313—2017, 3.1]
3.2
coastline
The line marking the boundary between sea and land at the average high tide level during spring tides over many years.
[Source: GB/T 18190—2017, 2.1.1]
3.3
sounding
Measurement techniques and methods for determining the vertical distance from a water surface point to the seabed and the planimetric position of that point.
[Source: GB 12327—2022, 3.2]
3.4
chart datum, depth datum
The reference plane from which depth measurements are reckoned in hydrographic surveying.
Note: Also referred to as chart datum. In China, the lowest astronomical tide (or theoretical lowest tide level) is adopted as the chart datum for oceans, harbors, and estuaries.
[Source: GB 12327-2022, 3.11, modified]
3.5
satellite positioning
Techniques and methods for determining the position of ground points by using satellite positioning receivers to receive signals from multiple positioning satellites of a satellite navigation system.
[Source: GB 50026-2020, 2.1.1]
3.6
global navigation satellite system (GNSS)-leveling
A method for obtaining the normal height of points using satellite positioning combined with leveling techniques (GNSS fitting leveling) or by utilizing refined regional quasi-geoid model results.
[Source: GB 50026-2020, 2.1.9]
3.7
airborne LIDAR
An integrated system installed on an aerial platform, combining a laser radar (LiDAR), positioning and orientation system, digital camera, and control system.
[Source: CH/T 8024—2011, 3.4]
3.8
point cloud
A collection of points distributed discretely and irregularly in three-dimensional space.
[Source: CH/T 8024—2011, 3.5]
3.9
route strip topographic map
A specialized topographic map showing the terrain and features within a certain width along both sides of routes such as roads, seawalls, pipelines, power lines, and communication lines.
3.10
route topographic profile map
A survey map product that integrates a digital line graphic or digital orthophoto map with a longitudinal profile.
4 Basic Requirements
4.1 General Provisions
4.1.1 The cartographic symbols for beach-shallow sea engineering surveying shall adopt GB/T 20257.1 and GB/T 20257.2. For marine areas not covered by these standards, GB 12319 shall be used.
4.1.2 Before commencing work, it is necessary to understand the client's technical requirements for the surveying task, collect, analyze, and utilize existing qualified data, conduct field reconnaissance, formulate a reasonable technical plan, and prepare a technical design document. During engineering surveying, internal and field quality control should be strengthened. Upon completion of the work, inspection and acceptance shall be carried out, and data management and technical summary preparation shall be completed.
4.2 Survey Benchmarks
4.2.1 A plane coordinate system may adopt an independent coordinate system but shall be connected to the China Geodetic Coordinate System 2000 through surveying.
4.2.2 The vertical datum shall adopt the National Vertical Datum 1985. When surveying in an area with an existing vertical control network, the original vertical datum may be used. If connection surveying is not feasible for a small survey area, an assumed datum may be adopted.
4.2.3 The depth datum shall adopt the lowest astronomical tide level (theoretical lowest tide level) in coastal waters. A conversion relationship between the depth datum and the National Vertical Datum 1985 shall be established.
