This part of GB/T 20257 specifies the grades, specifications and color standards of symbols and annotations for various natural and artificial features and geomorphic elements shown on 1:500, 1:1000 and 1:2000 topographic maps, as well as the principles, requirements and basic methods for the use of these symbols. GB/T 20257.1-2007 National Basic Scale Map Diagrams Part 1: 1:500 1:1000 1:2000 Topographic Map Diagrams GB/T20257.1-2007 Standard Download Decompression Password: www.bzxz.net
This part of GB/T 20257 specifies the grades, specifications and color standards of symbols and annotations for various natural and artificial features and geomorphic elements shown on 1:500, 1:1000 and 1:2000 topographic maps, as well as the principles, requirements and basic methods for the use of these symbols.
GB/T20257 "National Basic Scale Map Diagrams" is now divided into 4 parts:
--- Part 1: 1:500, 1:1000, 1:2000 topographic map diagrams;
--- Part 2: 1:5000, 1:10000 topographic map diagrams;
--- Part 3: 1:25000, 1:50000, 1:100000 topographic map diagrams;
--- Part 4: 1:250000, 1:500000, 1:1000000 topographic map diagrams.
This part is Part 1 of GB/T20257. This part replaces GB/T7929-1995 "1:500, 1:1000, 1:2000 topographic map diagrams". Compared with GB/T7929-1995, the main changes of this part are as follows:
--- In addition to monochrome, topographic maps can also use four colors (CMYK), and color separation is carried out according to the specified color values;
--- In the classification of map elements, residential areas and fences are combined with industrial and mining buildings (structures) and other facilities as residential areas and facilities, and landforms, soil quality and vegetation are adjusted to landforms, vegetation and soil quality;
--- The names of GPS control points, health centers, and light tracks are renamed as satellite positioning grade points, medical points, simple tracks, etc.;
--- The symbols of traverse points and basic points are interchangeable;
--- Highway grades are distinguished by symbols according to administrative grades, and the highway technical grade code and administrative grade code and number are added;
---Added symbols such as geothermal wells, ship locks, pumping stations, houses with basements, protruding houses, post offices, telecommunications offices, hotels, supermarkets, theaters, cinemas, TV stations, gymnasiums, science and technology museums, museums, exhibition halls, seismic stations, observatories, scientific experimental stations, flare torches, offshore platforms, garbage dumps, historic sites, ruins, cultural relics, maglev rails, light rail lines, subways, ramps, expressways, elevated expressways, trunk roads, secondary trunk roads, branch roads, zero kilometer signs for highways, long-distance bus stations (yards), water transport port passenger stations, special administrative region boundaries, development zones, bonded area boundaries, high points and notes, other economic forests, and special trees;
---The symbols for dangerous bank, reinforced bank, shed, cave, cave, oil and gas well, salt well, greenhouse, water storage tank, conveyor belt, school, colorful gate, memorial arch, statue, bell tower, drum tower, TV transmission tower, expressway, viaduct, cable bridge, railway level crossing, cable car, water aqueduct, floating dock, toll station, substation, special area boundary, steep rocky mountain, orchard, and mature forest have been modified, and the size of some symbols has been adjusted;
---The symbols for retaining wall and grade separation have been deleted;
---The map division and numbering in the appendix have been added with the provisions of division according to latitude and longitude;
---The explanatory definitions of symbols have been added to the brief description of symbols.
Appendices A, C and D of this part are normative appendices, and Appendix B is an informative appendix.
This part is proposed and managed by the State Administration of Surveying, Mapping and Geoinformation.
This part was drafted by the Surveying and Mapping Standardization Institute of the State Administration of Surveying, Mapping and Geoinformation, Beijing Surveying and Mapping Design Institute, and Construction Comprehensive Survey Research and Design Institute.
The main drafters of this part are: Ma Xiaoping, Xiao Guoxiong, Wu Wei, Xiao Xuenian, Duan Yihong, Zhang Kun, Chen Zhuo, Wang Dan, Huang Jian, Sun Lebing, and Lv Yuxia.
The previous versions of the standards replaced by this part are:
--- GB7929-1987, GB/T7929-1995.

Preface III
Introduction IV
1 Scope 1
2 General provisions for the use of symbols 1
2.1 Classification of symbols 1
2.2 Symbol size 1
2.3 Positioning points and positioning lines of positioning symbols 1
2.4 Orientation and configuration of symbols 1
2.5 Methods and requirements for the use of symbols 2
3 Division and color of topographic maps 2
3.1 Division and numbering of topographic maps 2
3.2 Topographic map outline decoration 3
3.3 Topographic map color 3
4 Symbols and annotations 4
4.1 Survey control points 4
4.2 Water system 6
4.3 Residential areas and facilities 20
4.4 Transportation 44
4.5 Pipelines 60
4.6 Boundaries 64
4.7 Landforms 66
4.8 Vegetation and soil quality 72
4.9 Notes 80
Appendix A (Normative Appendix) Brief Notes Table 88
Appendix B (Informative Appendix) Examples 91
Appendix C (Normative Appendix) Topographic map division and numbering 97
Appendix D (Normative Appendix) Outline decoration style insert
Symbol index 99

ICS 01.080.30
National Standard of the People's Republic of China
GB/T20257.1—2007
Replaces GB/T7929—1995
National basic scale map diagrams
Part 1: 1:500 1:1000 1:2000 Topographic map diagrams
Cartographic symbols for national fundamental scale maps Part 1: Specifications for cartographic symbols 1:500 1:1000 & 1:2000 topographicmaps2007-08-30issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of ChinaWww.bzxZ.net
2007-12-01implemented
1Scope
2General provisions for the use of symbols
Classification of symbols
Symbol size
Location points and location lines of positioning symbols
Symbol direction and configuration
2.5 Methods and requirements for the use of symbols
3 Division and color of topographic maps
Division and numbering of topographic maps
Topographic map outline decoration
Topographic map color
Symbols and annotations
Survey control points
Residential areas and facilities
Transportation·
Pipeline·
Vegetation and soil quality,||t t||Notes·
Appendix A (Normative Appendix)
Appendix B (Informative Appendix)
Appendix C (Normative Appendix)
Appendix D (Normative Appendix)
Symbol Index
Explanation Notes Brief Table
Topographic Map Division and Numbering
Map Outline Decoration Style
GB/T20257.1—2007
GB/ T20257 "National Basic Scale Map Patterns" is now divided into 4 parts: - Part 1: 1:5001:10001:2000 Topographic Map Patterns; Part 2: 1:50001:10000 Topographic Map Patterns; Part 3: 1:250001:500001:100000 Topographic Map Patterns; - Part 4: 1:2500001:5000001:1000000 Topographic Map Patterns. GB/T20257.1—2007
This part is Part 1 of GB/T20257. This part replaces GB/T7929-1995 "1:500, 1:1000.1:2000 Topographic Map Patterns". Compared with GB/T7929-1995, the main changes of this part are as follows: In addition to monochrome, topographic maps can also use four colors (CMYK) and are separated according to the specified color values: in the classification of map elements, "residential areas and fences" and "industrial and mining buildings (structures) and other facilities" are merged into "residential areas and facilities", "landforms and soil quality" and "vegetation" are adjusted to "landforms", "vegetation and soil quality", -GPS control points, health centers, light rails, etc. are renamed as satellite positioning grade points, medical points, simple rails, etc.; the symbols of first-line point points and basic point symbols are interchangeable; highway grades are distinguished by administrative grade symbols, and highway technical grade codes and administrative grade codes and numbers are added; geothermal wells, ship locks, pumping stations, houses with basements, protruding houses, post offices, telecommunications bureaus, hotels, supermarkets, theaters, cinemas, TV stations, gymnasiums, science and technology museums, museums, exhibition halls, seismic stations, observatories, scientific experimental stations, flare torches, offshore platforms, garbage dumps, monuments, ruins, cultural relics, maglev trains, etc. are added. Railway, light rail line, subway, ramp, expressway, elevated expressway, trunk road, secondary trunk road, branch road, highway zero kilometer sign, long-distance bus station (yard), water transport port passenger station, special administrative region boundary, development zone, bonded area boundary, high point and notes, other economic forest, special tree and other symbols; dangerous bank, reinforced bank, shed, cave, cave, oil and gas well, salt well, greenhouse, water storage tank, conveyor belt, school, colorful gate, archway, statue, bell tower, drum tower, TV tower, expressway, elevated road, railway The symbols of cable bridge, railway level crossing, cable car, water aqueduct, floating dock, toll station, substation, special area boundary, steep rock mountain, orchard, mature forest, etc. have been modified, and the size of some symbols has been adjusted;
- Delete the symbols of retaining wall, grade separation, etc.; The map division and numbering in the appendix have been added with the provisions of division according to latitude and longitude; The explanatory definition of symbols has been added to the brief description of symbols. Appendix A, Appendix C, and Appendix D of this part are normative appendices, and Appendix B is an informative appendix. This part is proposed and managed by the National Administration of Surveying, Mapping and Geoinformation. This part is drafted by the Institute of Surveying and Mapping Standardization of the National Administration of Surveying, Mapping and Geoinformation, Beijing Surveying and Mapping Design Institute, and Construction Comprehensive Survey Research and Design Institute.
The main drafters of this part: Ma Xiaoping, Xiao Guoxiong, Yuan Wei, Xiao Xuenian, Duan Yihong, Zhang Kun, Chen Zhuo, Wang Dan, Huang Jian, Sun Lebing, Chang Yuxia The previous versions of the standards replaced by this part are: GB7929-1987GB/T7929-1995. The national standards for topographic map patterns or surveying and mapping industry standards GB/T7929 "1:500.1:1000.1:2000 Topographic Map Patterns", GB/T5791 "1:5000, 1:10000 Topographic Map Patterns", GB12342 "1:25000, 1:50000, 1:100000 Topographic Map Patterns", GB15944 "1:250000 Topographic Map Compilation Specifications and Patterns", GB14512 "1:1000.000 Topographic Map Compilation Specifications and Patterns", CH/T4011 "1:500000 Topographic Map Compilation Specifications and Patterns" have been implemented for many years, and they have played an important role in my country's national economic construction and surveying and mapping production work. In order to meet the needs of digital surveying and mapping production and facilitate users, it is necessary to adjust the standard structure of topographic map formats. The adjusted structure is as described in the preface. This part is revised after the adjustment of GB/T7929. V
1 Scope
National basic scale map formats
Part 1: 1:5001:1000
1:2000
Topographic map formats
GB/T20257.1—2007
This part of GB/T20257 specifies the grades, specifications and color standards of symbols and annotations of various natural and artificial landforms and geomorphic elements represented on 1:5001:1000 and 1:2000 topographic maps, as well as the principles, requirements and basic methods for using these symbols.
This section applies to the surveying and mapping of 1:500, 1:1000, and 1:2000 topographic maps, and is also the basic basis for various departments to use topographic maps for planning, design, and scientific research. It can be used as a reference when compiling geographic base maps of other types of maps or mapping maps of corresponding scales. 2 General provisions for the use of symbols
2.1 Classification of symbols
2.1.1 Scaled symbols: symbols of features whose length and width can be expressed according to scale after the features are reduced in scale. 2.1.2 Semi-scaled symbols: symbols of features whose length can be expressed according to scale but whose width cannot be expressed according to scale after the features are reduced in scale. In this section, only the width dimension value is marked next to the symbol. 2.1.3 Non-scaled symbols: symbols whose length and width cannot be expressed according to scale after the features are reduced in scale. In this section, the length and width dimension values ​​of the symbol are marked next to the symbol.
2.2 Dimensions of symbols
2.2.1 The dimension values ​​marked with numbers next to the symbols are all in millimeters (mm). 2.2.2 If only one dimension value is marked next to the symbol, it means the diameter of a circle or a circumscribed circle, the side length of an equilateral triangle or a square; if two dimension values ​​are listed side by side, the first number indicates the height of the main part of the symbol, and the second number indicates the width of the main part of the symbol; the number at one end of a linear symbol, a single line refers to its thickness, and two parallel lines refer to the width of the thick line (streets refer to the width of its blank part). Dimension values ​​that need to be specially marked on the symbol are indicated with dotted lines
2.2.3 The thickness of the symbol's line strokes, the length of line segments, the angle between intersecting line segments, etc., if not specified, shall be based on the symbols in this diagram. Generally, the line thickness is 0.15mm, the point diameter is 0.3mm, the line length of the non-main part of the symbol is 0.5mm, and the angle of non-vertical crossing line segments is 45° or 60°
2.3 Positioning point and positioning line of positioning symbol
2.3.1 If there is a point in the symbol graphic, the point is the actual center position of the feature. 2.3.2 Symbols such as circles, squares, rectangles, etc. The positioning point is at the center of their geometric figures. 2.3.3. The positioning point of the wide-bottom symbol (yurt, chimney, water tower, etc.) is at the center of its bottom line. 2.3.4. The positioning point of the symbol with a right angle bottom (windmill, road sign, independent tree, etc.) is at the top point of its right angle. 2.3.5. The positioning point of the symbol composed of several graphics (Aobao, church, weather station, etc.) is at the center point or intersection of the graphics below. 2.3.6. The positioning point of the symbol without a bottom line below (kiln, pavilion, cave, etc.) is at the center point of the line connecting the two end points below. 2.3.7. The positioning point of other symbols not expressed according to scale (bridge, sluice, dam, karst funnel, etc.) is at the center point of its symbol. 2.3.8. The positioning line of linear symbols (road, river, etc.) is at the center axis of its symbol; when expressed according to scale, it is at the center axis of the lines on both sides. 2.4. Direction and configuration of symbols
2.4.1. Except for those specified in the brief description to be expressed according to the true direction, all symbols are perpendicular to the southern outline. 1
GB/T20257.1—2007
2.4.2Soil and vegetation symbols can be divided into three types according to their arrangement: a) Column type: arranged in certain rows and columns, such as nursery, grassland, economic forest, etc.; b)
Hash type: arranged in no certain rows and columns, such as small grass hills, shrubs, stone land, etc.; c
Corresponding type: symbols are represented according to the density or position of the actual situation, such as sparse forests, scattered trees, etc. When representing symbols, attention should be paid to showing their distribution characteristics.
Column type arrangement generally arranges symbols according to the intervals represented by the diagram. When the area is large, the symbol interval can be enlarged 13 times. Under the principle of being able to express clearly, the annotation method can be used for expression. It is also possible to not represent the most common symbol in the diagram, and add annotations to the diagram, but a diagram or a batch of diagrams should be unified.
Note: Configuration means that the symbols used are explanatory symbols and do not have positioning significance. Symbols are arranged in a scattered or complete manner within the distribution range of the features to indicate the category of the surface features.
2.5 Symbol usage and requirements
2.5.1 In the diagram, except for special markings, solid lines generally indicate the intersection of the outer contour of buildings and structures with the ground (except bridges, dams, sluice gates, and overhead pipelines), dashed lines indicate the projection of underground or overhead parts on the ground, and dotted lines indicate the land category boundary line and feature boundary line. 2.5.2 Features represented by scale are divided into the following forms: a)
The outline of the feature is represented by scale, and the contour is added with color, such as rivers and lakes; or non-scale symbols and explanatory notes (or brief explanatory notes) are arranged in the appropriate position within the contour as an explanation, such as wells and toll booths. See Appendix A for brief explanatory notes.
b) For the same type of surface-distributed features, descriptive symbols and notes are arranged in a row, hash or corresponding manner within their scope. If the boundary is obvious, the land class boundary is used to indicate its scope (such as economic forest land, etc.), and if the boundary is not obvious, the boundary is not indicated (such as sparse forest land, saline-alkali land, etc.).
c) For the same features distributed in groups adjacent to each other, their scope is indicated by the land class boundary, and non-scale symbols are arranged at moderate positions within their scope, such as open-air equipment, etc.
2.5.3 When two features overlap or intersect in three dimensions, the part of the lower layer covered by the upper layer is disconnected according to the projection principle, and the upper layer remains intact. 2.5.4 The sizes of various symbols are specified according to the map sheet with medium density content of the topographic map. In order to make the topographic map clear and easy to read, except for those that allow symbol intersection and combination, the interval between symbols (including the interval between the contour line and the configured non-scale symbol) should generally not be less than 0.3mm. If the density of features in some areas is too high and cannot be accommodated on the map, it is allowed to slightly reduce the size of the symbol (reduction rate not greater than 0.8) or move the symbol of the secondary feature. When the symbols of linear features represented by double lines are very close to each other, they can be represented by collinearity. 2.5.5 For some buildings and structures on the ground, for which there are no symbols specified in the diagram and it is inconvenient to classify them, the outline or range of the object can be represented and annotated. The outline of the feature is represented by a 0.15mm solid line, and the distribution range line of the feature and the land class boundary are represented by the land class boundary symbol.
2.5.6 In the soil and vegetation symbol column of this diagram, those with dotted lines indicate that the actual range line should be represented by the land class boundary symbol; those with solid lines indicate that the range line is not represented and the symbol is only configured within the range. 2.5.7 The numerical notes such as width, depth, and relative height next to the symbol are generally marked to 0.1m. Unless otherwise specified, all numerical descriptions that are “greater than” include the number itself (e.g. greater than 3m, including 3m), and “less than” do not include the number itself. The meanings of “above” and “below” in various symbol level descriptions are the same as above. 2.5.8 Examples of symbol representation and coordination are shown in Appendix B. 3 Topographic map framing and color
3.1 Topographic map framing and numbering
Topographic map framing and numbering shall be implemented in accordance with Appendix C. 2
Topographic map outline decoration
See Appendix D for outline decoration.
3.3 Topographic map colors
GB/T20257.1—2007
1:500, 1:1000, 1:2000 topographic maps can be multi-color or monochrome as needed. Multi-color maps use cyan, magenta, yellow and black (CMYK) and are separated according to the specified color values ​​3
GB/T 20257. 1—2007
Symbols and annotations
Symbol name
Survey control point
Triangulation point
Address 11
Zhangwanling, Huangshigang 1
203,623 Business Program
5.0——Higher
Small triangulation point
On!
Jurenling, Zhangzhuang
234.91, 155.71
0 relative height
Traverse point
"Ten piles!"
115, 123-
First level
84.46.54.40
2.4-——relative height
Burial stone root point
a. On the Ten Cui
12, 1c——Point number
273.46.175.64
2.5——relative height||t t||Ignore stone basic point
Leveling point
I—level
Beijing-Shi 5 point name
332,505 business
Weicheng positioning level point
H—equal suffix
11——point
Symbol style
1:1000
Zhangwanling
Huangtugang
Motianling
2:0 day
Drying stone 5
1*2000
Symbol details
: :0:5
Multi-color map
4.1 Survey control points
Brief description
GB/T20257.1—2007
The geometric center of each surveyor's control point symbol on the map indicates the center position of the surveyor's control point mark on the ground: the elevation note next to the symbol indicates the elevation of the top surface of the field mark or the top surface of the technical pile, marking a complete survey control point. In addition to the control point symbol, the control point should also be noted on the map. The point name (or point number) and elevation of the leveling point. The point name and elevation are expressed in fractional form, divided into point name (or point number), and elevation: the point name and elevation are annotated on the right side of the symbol (when there is a relative height, the relative height is on the left side of the symbol), the leveling point and the triangulation point measured by the leveling joint, the small triangulation point, the elevation is generally annotated to 0.001-1, and the elevation measured by the one-angle elevation is generally annotated to 0.01m. When using smoke maps, water towers and other independent features as measurement control points, the features are outlined according to the scale. When indicating, if the control point symbol can be accommodated in the outline figure, the control point symbol is drawn at the actual position in the figure, and the corresponding feature symbol is not indicated, but the control point name (or point) and the feature name must be noted, such as ③ courtyard map building (smoke map). When the feature cannot be expressed according to the scale, Figure 1 shall indicate the corresponding feature symbol, the point name and elevation of the survey control point, and the type of the survey control point, such as 【courtyard(_corner sound. The survey control point located on the house shall be indicated by the control point symbol at the actual position of the house symbol, and the point name shall be noted. 156.71
4.1.1 The national level corner points and precision traverse points determined by the corner measurement method or the precision traverse method. Those located on the mound and the mound cannot be expressed according to the scale shall be indicated by the symbol. 4.1.2 The corner points with an angle measurement accuracy of 5\ or 10\ and other control points with the same accuracy located on the upper mound and the upper mound cannot be expressed according to the scale shall be indicated by the symbol a. 4.1.3 Control points determined by traverse measurement: The second and third level traverse points are all represented by this symbol: those located on the soil pile and the soil pile cannot be represented according to the scale are represented by the symbol a 4.1.4 Topographic points with marks on the reversed stone or natural rock and viscosity lower than the small triangle point: those located on the H of the pile 1 and the pile cannot be represented according to the scale are represented by the symbol a, 4.1.5 The unburied stone control points are indicated according to the map requirements. 4.1.6 The national level elevation control points measured by the leveling method. 4.1.7 The national level control points measured by satellite positioning technology, including A~E GB/T 20257. 1—2007
Derivation number name
Independent point
2.51——Elevation
Surface river
bh. Elevation times shoreline
Qingjianghui
River name
Underground river section
. Unknown
6. Clear water route
Xiaojian river section
Inling river
Unfixed water chain line
Water month
Dry Riverbed (Gandong River)
Canal.Ditch frame
b1.Royal piece
1:1000
Zhaobi Mountain
1:2000
Detail of the derivative number
Multicolor map color Bo
Mountain color 10
M4UYI80K38
Mountain color (10
Facial color 10
Facial color c10
M49rlsnK30
Facial color c10
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