CN113806423A - GIS-based power transmission and transformation project environment-friendly detection system and method - Google Patents
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Abstract
The invention discloses a GIS-based power transmission and transformation project environment-friendly detection system and method, which comprises a map attribute, a map operation layer, a drawing layer, a label and a data layer; the map attribute is used for setting a map frame, and comprises setting a map frame coordinate system and setting a map range; the map operation comprises user interaction and serialization, the user interaction is used for a user to operate the map through a mouse or a keyboard, and the map operation comprises map translation, map amplification, map reduction and map zooming to specified elements. According to the GIS-based power transmission and transformation project environment-friendly detection system and method, the relation between the line and the sensitive area is judged by performing space analysis on the ecological sensitive area data and the line data, so that the line can be ensured to normally pass through environment evaluation detection, the environment-friendly problem is avoided in the design stage, the working efficiency is improved, repeated modification is avoided, accumulation is performed for the environment-friendly work of a power grid towards the automation direction, and the environment-friendly supervision work level is improved.
Description
Technical Field
The invention relates to the technical field of environment-friendly detection of power transmission and transformation projects, in particular to a GIS-based environment-friendly detection system and method for the power transmission and transformation projects.
Background
With the increasing concern of the environment for the country and people, the environmental problem is one of the most serious challenges facing China currently, and protecting the environment is a basic national benefit for ensuring the long-term stable growth of economy and realizing sustainable development. The quality of the environmental problem solution is related to the national security, the international image and the fundamental benefits of the masses of people in China. Along with the development of national electric power, the capacity of a power grid is also larger and larger, the voltage grade of a power transmission line is also continuously improved, the risk of damaging the local environment exists in the construction process of a power transmission and transformation project, and in order to protect the environment, a power transmission and transformation project environment protection regulation file regulates the part so as to ensure that the influence on the local environment is as small as possible.
At present, in the construction process of power transmission and transformation projects in China, problems of implementation loss of part of environmental protection measures, insufficient circulation of information management and ecological sensitive area basic data loss exist, so that a design unit cannot perform environment-friendly detection in real time in the design process, corresponding problems can be found only in stages of acceptance and environmental evaluation and rechecking when a current design line and the ecological sensitive area data spatial position relation is judged, and the problems cannot be effectively avoided in a line address selection stage.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a GIS-based power transmission and transformation project environment-friendly detection system and method, so as to overcome the technical problems of the prior related schemes. All ecological sensitive area data of the whole province are collected, data are published by taking administrative districts as units and stored in a cloud server, all departments can access data through the cross-regional data access of projects, and spatial analysis is carried out on the geographical spatial position of a power transmission and transformation project and the data spatial position of the ecological sensitive area so as to accurately evaluate the influence of the power transmission and transformation project on the ecological sensitive area. The real-time reminding function is provided when the designer selects the site, so that the ecological influence problem is solved in the design stage, the repeated design of the line is avoided, the working efficiency is improved, the economic expenditure is reduced, and meanwhile, the accumulation is carried out on the environmental protection work of the power grid towards the development of the automation direction, and the environmental protection supervision work level is improved.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a GIS-based power transmission and transformation project environment-friendly detection system comprises a map attribute, a map operation layer, a drawing layer, a label and a data layer;
the map attribute is used for setting a map frame, and comprises setting a map frame coordinate system and setting a map range;
the map operation comprises user interaction and serialization, the user interaction is used for a user to operate a map through a mouse or a keyboard, the map operation comprises map translation, zooming-in, zooming-out, zooming-in to a designated element, previous view and next view operation, and the serialization is used for storing the map state;
the drawing layer comprises a temporary annotation layer and a measurement layer, the temporary annotation layer is used for plotting temporary elements of points, lines and surfaces, and the measurement layer comprises distance measurement, angle measurement and area measurement;
the label is used for displaying the content of the field on the element through the data attribute field, so that the element information can be visually described;
the data layer is used for providing various data loading, rendering and displaying functions, and the data supports vector data, raster data, Grid and OgrDataSource.
Preferably, the data of the ecological sensitive area is stored in a cloud server database in an OgrDataSource mode, hierarchical storage is carried out according to an administrative division and data categories, a user carries out data loading through the administrative division and the categories, design line data are loaded and displayed in a local vector data loading mode, images related to the water and soil conservation process are loaded into a main map in a local offline grid data loading mode, and loading comparison can also be carried out in a split screen module.
Preferably, various analyses of the system are processed in the data layer geographic processing module, the system provides line addressing, line comparison, automatic distance measurement, image comparison, major change, image cutting, image geographic correction, contour line generation and a tool for calculating earth volume by DEM, and a user can conveniently carry out various environment-friendly detection works.
The invention also provides a GIS-based power transmission and transformation project environment-friendly detection method, which specifically comprises the following steps:
s1, setting a map coordinate system and a map range, loading an online map or a local offline raster image as a subsequent analysis background map, and also being capable of being used for multi-period image comparison analysis;
s2, after the user account logs in, loading basic vector data of the ecological sensitive area according to the administrative region, performing color matching rendering according to the specification requirement, and using the basic vector data as basic data of environmental protection detection;
s3, loading power transmission and transformation engineering line data to be detected in an environment-friendly manner, and configuring patterns, wherein the patterns comprise point patterns and line patterns, and the point patterns adopt tower-rod patterns by default;
s4, setting relevant environment-friendly detection parameters, setting default detection parameters by the system, wherein the reference is carried out according to relevant specifications, such as a significantly-changed transverse displacement threshold value of 500 meters;
and S5, carrying out environment-friendly detection on various power transmission and transformation projects, including automatic distance measurement and major change analysis.
Preferably, the data of the ecological sensitive area comprise a national-level geological park, a national-level scenic spot, a national-level forest park, a national-level wetland park, a national-level natural protection area, a provincial-level scenic spot, a provincial-level forest park, a provincial-level wetland park, a provincial-level natural protection area, an aquatic germplasm resource protection area, a drinking water source area and a natural protection cell, and meanwhile, the data can be added in a self-defined mode to carry out follow-up analysis.
Preferably, the route site selection involves a stage, the spatial positions of the tower pole, the route and the ecological sensitive area are judged in real time, the inappropriate sites are modified in time, and the environmental assessment problem is solved in a design stage.
Preferably, the automatic ranging in step S5 is to help the user analyze distances between the line data and the sensitive area and between the line data and the sensitive point, analyze a buffer area of the line, analyze a spatial intersection between the buffer area and the ecological data, calculate a shortest distance between the line and the intersected ecological data, prompt a designer to have a potential ecological impact problem at a corresponding location, and perform adjustment in time.
Preferably, in the step S5, the significant change is that in the loop evaluation check, the requirement that the ratio of the lateral displacement of the acceptance line to the designed line exceeds 500 meters in length is not more than 30%, the designed line is analyzed by a buffer area with a radius of 500 meters, the buffer area and the acceptance line are analyzed by a symmetry difference (symmetry difference), data with a lateral displacement exceeding 500 meters are obtained, and the length and the total length ratio of the data are calculated to determine whether the lateral displacement exceeds 30%.
Preferably, for the environmental water conservation repair work, the environmental water conservation repair condition after the engineering construction is intuitively known through the comparison and analysis of satellite images or aviation flying images in different periods and the view comparison of the same position of the images in different periods.
(III) advantageous effects
The invention provides a GIS-based power transmission and transformation project environment-friendly detection system and method. Compared with the prior art, the method has the following beneficial effects: the GIS-based power transmission and transformation project environment-friendly detection system and method comprise a map attribute, a map operation layer, a drawing layer, a label and a data layer; the map attribute is used for setting a map frame, and comprises setting a map frame coordinate system and setting a map range; the map operation comprises user interaction and serialization, the user interaction is used for a user to operate the map through a mouse or a keyboard, the map operation comprises map translation, zooming in and zooming out to a designated element, and the map operation comprises previous view and next view operation, and the serialization is used for storing the map state; the drawing layer comprises a temporary annotation layer and a measurement layer, the temporary annotation layer is used for plotting temporary elements of points, lines and surfaces, and the measurement layer comprises distance measurement, angle measurement and area measurement; the label is used for displaying the content of the field on the element through the data attribute field, and can visually describe the element information; the data layer is used for providing functions of loading, rendering and displaying various data, the data supports vector data, raster data, Grid and OgrDataSource, space analysis is carried out on ecological sensitive area data and line data to judge the relation between a line and a sensitive area, the situation that the line can normally pass through environmental evaluation detection and avoid environmental protection problems in a design stage is ensured, the work efficiency is improved, repeated modification is avoided, accumulation is carried out on the environmental protection work of a power Grid towards the development of an automation direction, and the environmental protection supervision work level is improved.
Drawings
FIG. 1 is a GIS platform architecture diagram of a GIS-based environment-friendly detection system for power transmission and transformation projects in an embodiment of the invention;
FIG. 2 is a data architecture diagram of a GIS-based environmental protection inspection system for power transmission and transformation projects according to an embodiment of the present invention;
FIG. 3 is a flowchart of an embodiment of the invention, wherein the GIS-based environmental protection detection method for the power transmission and transformation project is implemented by the GIS-based environmental protection detection method;
FIG. 4 is a diagram illustrating an effect of automatic distance measurement in environmental protection detection in power transmission and transformation engineering according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an analysis effect of environmental detection and major changes in power transmission and transformation engineering according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a statistical result of environmental protection testing in power transmission and transformation engineering according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating the effect of environmental protection and restoration inspection in the first power transmission and transformation project according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating the effect of environmental protection and restoration inspection in the second power transmission and transformation project according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an automatic ranging analysis algorithm in an embodiment of the present invention;
fig. 10 is a schematic diagram of an example of an automatic ranging analysis algorithm in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 10, an embodiment of the present invention provides a technical solution: a GIS-based environment-friendly detection system for power transmission and transformation projects comprises a map attribute, a map operation layer, a drawing layer, a label and a data layer.
The map attribute is used for setting a map frame, and comprises setting a map frame coordinate system and setting a map range.
The map operation comprises user interaction and serialization, the user interaction is used for a user to operate the map through a mouse or a keyboard, the map operation comprises map translation, zooming in and zooming out, zooming in and out to a designated element, and previous view and next view operation, and the serialization is used for storing the map state.
The drawing layer comprises a temporary annotation layer and a measurement layer, the temporary annotation layer is used for plotting temporary elements of points, lines and surfaces, and the measurement layer comprises distance measurement, angle measurement and area measurement.
The label is used for displaying the content of the field on the element through the data attribute field, and the element information can be described visually.
The data layer is used for providing various data loading, rendering and displaying functions, and the data supports vector data, raster data, Grid and OgrDataSource.
In the embodiment of the invention, data of the ecological sensitive area is stored in a cloud server database in an OgrDataSource mode, hierarchical storage is carried out according to an administrative division and a data category, a user carries out data loading through the administrative division and the data category, design line data is loaded and displayed in a local vector data loading mode, images related to a water and soil conservation process are loaded into a main map in a local offline grid data loading mode, and loading comparison can also be carried out in a split screen module.
In the embodiment of the invention, various analyses of the system are processed in the data layer geographic processing module, and the system provides tools for line addressing, line comparison, automatic distance measurement, image comparison, major change, image cutting, image geographic correction, contour line generation and earth volume calculation by DEM (digital elevation model), so that various environmental protection detection works can be conveniently carried out by a user.
The embodiment of the invention also provides a GIS-based power transmission and transformation project environment-friendly detection method, which specifically comprises the following steps:
s1, setting a map coordinate system and a map range, loading an online map or a local offline raster image as a subsequent analysis background map, and also being capable of being used for multi-period image comparison analysis;
s2, after the user account logs in, loading basic vector data of the ecological sensitive area according to the administrative region, performing color matching rendering according to the specification requirement, and using the basic vector data as basic data of environmental protection detection;
s3, loading power transmission and transformation engineering line data to be detected in an environment-friendly manner, and configuring patterns, wherein the patterns comprise point patterns and line patterns, and the point patterns adopt tower-rod patterns by default;
s4, setting relevant environment-friendly detection parameters, setting default detection parameters by the system, wherein the reference is carried out according to relevant specifications, such as a significantly-changed transverse displacement threshold value of 500 meters;
s5, carrying out environment protection detection of each power transmission and transformation project, including automatic distance measurement and major change analysis, wherein the automatic distance measurement is used for helping a user to analyze the distance between line data and a sensitive area and a sensitive point, analyzing a buffer area of a line, carrying out space intersection analysis between the buffer area and ecological data, and calculating the shortest distance from the line to the crossed ecological data to prompt designers that the corresponding position has potential ecological influence problem, and carrying out adjustment in time, wherein the major change is in the process of environmental assessment and review, the proportion of the transverse displacement of the acceptance line and the design line exceeding 500 meters is required to be not more than 30 percent, and (3) analyzing a buffer area with the radius of 500 meters on the designed line, analyzing the symmetric difference (symmetry difference) between the buffer area and the acceptance line, acquiring data of which the transverse displacement exceeds 500 meters, and calculating the length and the proportion of the transverse displacement to the total length to judge whether the transverse displacement exceeds 30 percent.
In the embodiment of the invention, the data of the ecological sensitive area comprise a national-level geological park, a national-level scenery scenic spot, a national-level forest park, a national-level wetland park, a national-level natural protection area, a provincial-level scenery scenic spot, a provincial-level forest park, a provincial-level wetland park, a provincial-level natural protection area, an aquatic germplasm resource protection area, a drinking water source area and a natural protection cell, and meanwhile, the data can be added in a self-defining manner for subsequent analysis.
In the embodiment of the invention, the route site selection relates to a stage, the spatial positions of a tower pole, a route and an ecological sensitive area are judged in real time, an improper station is modified in time, and the environmental assessment problem is solved in a design stage.
In the embodiment of the invention, aiming at the environment-friendly restoration work, the environment restoration condition after the engineering construction is intuitively known through the comparison and analysis of satellite images or aviation images in different periods and the view comparison of the same position of the images in different periods.
In the embodiment of the present invention, fig. 1 is a diagram of a GIS platform architecture of a GIS-based environmental protection detection system for power transmission and transformation projects, where the GIS platform mainly includes five parts, namely, a map attribute, a map operation, a drawing layer, a label, a data layer, and the like.
The map attribute is mainly used for setting a map frame, including setting a map frame coordinate system, once coordinate information is set, all subsequent loaded data are projected to the coordinate system, and the map attribute is a basis for loading, processing and analyzing the subsequent data. The map range is the limit to the display range, and the map cannot be translated and zoomed out of the map range, so that the map view can be effectively limited to an effective area.
The mapping operations include user interaction and serialization. The user interaction mainly refers to that a user operates the map through a mouse or a keyboard, and the operations comprise map translation, zooming in and zooming out, zooming to a specified element, a previous view, a next view and the like. The serialization mainly refers to the storage of the map state, the map state comprises the current online map type, the center point coordinate, the zoom level, the loading layer sequence, the color matching labels of all layers and the like, and the map can automatically load corresponding data and carry out corresponding setting through a serialization file, so that the map state storage function is realized.
The drawing layer mainly comprises a temporary annotation layer and a measurement layer. The temporary layer is used for plotting temporary elements such as points, lines and surfaces. The measuring layer comprises distance measurement, angle measurement and area measurement.
The marking refers to displaying the content of the field on the element through the data attribute field to describe the element information more intuitively, and the marking comprises parameter setting such as visualization, category, convention, transparency and the like. The visualization indicates whether the label is visible or not, the category is a function of setting different styles through different contents of element designated fields in the drawing, and the convention mainly comprises marking font styles, sizes, colors and the like. Transparency the transparency can set the transparency of the annotation content.
The data layer mainly provides functions of loading, rendering and displaying various types of data, and the data mainly supports vector data (such as shape file, kml, dxf and the like), raster data (such as TIFF and the like), Grid and OgrDataSource. The vector data operation comprises data loading, rendering and displaying, and the geographic processing is various spatial analysis, such as buffer area analysis, intersection analysis and the like, most analysis of environmental protection detection is carried out based on the analysis, an attribute table is used for checking attribute information of all elements of a layer, the attribute table is used for visually setting whether the data of the layer is visible, a platform supports an element selection function, a user can select interested data by clicking or frame selection, and a chart refers to statistics of the proportion of various types of data. The raster data mainly provides user-defined data loading display for a user, complex slice issuing processing is not needed, local loading is directly carried out, and the raster image is conveniently used as a background image or a multi-period image for comparison and analysis by the user. The part integrates a grid processing module of a GDAL library, so that grid data can be analyzed and processed through the GDAL, and various grid analysis functions including cutting, contour line automatic generation and the like can be realized. The OrgDataSource mainly aims at database layers, including PostGIS, MySQL database layers and the like, and supports the direct connection function of the database layers and data loading and browsing.
In the embodiment of the present invention, fig. 2 is a data architecture diagram of a GIS-based environmental protection detection system for power transmission and transformation projects in the embodiment of the present invention. The map data management method comprises a coordinate system, a ranging side face, raster tiles, file management and data editing, wherein the modules are in a one-to-one relation, and raster data and vector data are in a one-to-many relation, namely one map allows a plurality of raster data and vector data to be loaded. Grid tiles refer to online maps, such as the mainstream map services of high-end, hundredth, sky maps, and the like. The user can edit the geometric position of the data through the data editing function, and can also modify the attribute information, and the addition and deletion of the elements are also partial functions of the data editing.
In the embodiment of the present invention, fig. 3 is a flowchart of a GIS-based environmental protection detection method for power transmission and transformation engineering in the embodiment of the present invention. The main steps are as follows.
Setting a map coordinate system and a map range, loading an online map or a local offline raster image as a subsequent analysis background map, and also being used for multi-period image comparison analysis.
And after the user account logs in, carrying out basic vector data loading on the ecological sensitive area according to the administrative area where the user account is located, and using the basic vector data as basic data for environment protection detection.
And loading the transmission and transformation project line data to be subjected to environment protection detection, and configuring the style, including point style and line style.
And (3) setting related environment-friendly detection parameters, setting detection default parameters by the system, and performing reference according to related specifications.
And carrying out environment-friendly detection on various power transmission and transformation projects. The automatic ranging function is used for helping a user analyze the existing line data, sensitive areas and sensitive points, providing graphical statistical information and table statistical information, and visually knowing which sensitive areas the line crosses and which sensitive areas are too close to (smaller than a buffer distance). By double-clicking the corresponding row to zoom the base map to the corresponding position, the operator can conveniently master more detailed results, including corresponding length and length ratio of the line crossing the sensitive area. In the ring assessment and rechecking process, the length ratio of the transverse displacement of the acceptance line to the design line is more than 500 meters and cannot exceed 30 percent, and in order to more intuitively master the condition, software provides a major change analysis function and mainly aims at the change condition of the acceptance line and the design line.
In the embodiment of the present invention, fig. 4 and fig. 5 are diagrams of partial environmental protection detection effects of the power transmission and transformation project based on the GIS in the embodiment of the present invention. Fig. 4 is an automatic distance measurement effect diagram, wherein power transmission and transformation project line data are tower pole icons and dark lines, planar data are ecological sensitive area basic vector data, buffer area analysis is performed on the power transmission and transformation project line through automatic distance measurement analysis, intersection analysis is performed on the power transmission and transformation project line and the ecological sensitive area data, the shortest distance is solved for intersecting elements, a shortest distance line is generated, a shortest distance value is labeled, an intersecting line segment is generated across a sensitive section, and attribute labeling includes corresponding length and length proportion of the line across the sensitive area. Fig. 5 is a major variation analysis, that is, in the loop evaluation, the requirement of the ratio of the transverse displacement of the test line to the design line exceeding 500 meters in length cannot exceed 30%, and the major variation analysis result has length deviation and ratio and the transverse displacement is greater than 500 meters in length and ratio. The length and the ratio of the unqualified line segments are marked in detail on the graph, so that a user can intuitively and clearly master the change part so as to analyze and modify the change part.
In the embodiment of the present invention, fig. 6 is a diagram of a statistical result of environment protection detection of power transmission and transformation engineering based on a GIS in the embodiment of the present invention. Is a table statistics of fig. 4 and 5, listing in a list the sensitive zone elements crossing the sensitive zone and having a distance less than the buffer distance, including information such as name, nearest distance, latitude and longitude of the nearest point of the route, the distance of 0 indicating that the sensitive zone is crossed, and zooming to the elements by double-clicking the list map for the user to verify one by one.
In the embodiment of the present invention, fig. 7 and fig. 8 are diagrams illustrating the environmental water conservation repair effect of the power transmission and transformation project in the embodiment of the present invention. The system provides a raster data loading display module, a user can conveniently load own image data, vector data are superposed through an image split screen same view comparison function, a front-back comparison diagram of a certain tower pole is shown in the diagram 8, the left diagram is an image in 10 months, the right diagram is an image in 8 months, through front-back comparison, operations such as water and soil conservation and the like are carried out, vegetation recovery is obvious in the area in 10 months compared with the area in 8 months, and the water and soil conservation effect can be intuitively and clearly mastered through the function.
In the embodiment of the invention, the Buffer analysis basic principle comprises the following steps:
the method comprises the following steps: and determining the buffer width corresponding to each line segment of the multi-segment line, wherein the buffer distance is b.
Step two: each broken line is composed of a starting point (E)1,N1) And end point (E)2,N2) And determining that the difference value of the horizontal coordinates and the vertical coordinates of the two points is delta X and delta Y.
Step three: the calculation formula of the coordinates of the starting point and the ending point of the parallel buffer lines on the two sides of the line segment is as follows:
and
the above formula is applicable to most situations, and when the line segments are parallel to the coordinate axes, the parallel buffer lines are simpler.
Step four: and determining parallel buffer lines on two sides of the line segment according to the third step, and obtaining parallel lines of subsequent line segments according to the mode.
Step five: and solving the intersection points of the parallel buffer lines corresponding to the adjacent line segments to serve as the starting point or the end point of the buffer boundary, and sequentially connecting all the intersection points to obtain a buffer range to finish buffer area analysis.
In the embodiment of the invention, the automatic ranging analysis algorithm is as follows:
automatic ranging refers to solving for the shortest distance between two elements. If the two elements are intersected, the distance between the two elements is 0, and the principle core of automatic distance measurement is the solution of the shortest distance between the two polylines. The shortest distance between the multiple segments can be decomposed into the shortest distance between any two segments for solving, and the distance between the segments can be decomposed into the shortest distance between points and the segments for solving. The following description will be made in terms of solving for the shortest distance between two segments.
The shortest distance between a point and a line segment is the perpendicular from the point to the line segment. If a perpendicular cannot be drawn between the endpoints of a line segment, then the distance from the point to the nearest endpoint is the shortest distance. As shown in fig. 9.
The shortest distance calculation between the line segments is mainly as follows:
calculating the distance from each end point of the line segment to the adjacent line segment by calculating the shortest distance from the point to the line segment.
Calculating the distance from each end point of the adjacent line segment to the input line segment.
The smaller of the two distance values is the distance between the two line segments.
Fig. 10 shows a perpendicular CX to the line segment defined by the break point AB from the break point C. The perpendicular from the break point D to the line segment may also be calculated, but this distance is longer than CX. Thus, CX is the shortest distance from the line segment CD to the line segment AB.
And those not described in detail in this specification are well within the skill of those in the art.
The embodiments of the invention disclosed above are intended merely to aid in the explanation of the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a power transmission and transformation engineering environmental protection detecting system based on GIS which characterized in that: the method comprises the steps of map attributes, map operations, a drawing layer, labels and a data layer;
the map attribute is used for setting a map frame, and comprises setting a map frame coordinate system and setting a map range;
the map operation comprises user interaction and serialization, the user interaction is used for a user to operate a map through a mouse or a keyboard, the map operation comprises map translation, zooming-in, zooming-out, zooming-in to a designated element, previous view and next view operation, and the serialization is used for storing the map state;
the drawing layer comprises a temporary annotation layer and a measurement layer, the temporary annotation layer is used for plotting temporary elements of points, lines and surfaces, and the measurement layer comprises distance measurement, angle measurement and area measurement;
the label is used for displaying the content of the field on the element through the data attribute field, so that the element information can be visually described;
the data layer is used for providing a data loading rendering display function, and the data supports vector data, raster data, Grid and OgrDataSource.
2. The GIS-based environment-friendly detection system for the power transmission and transformation project according to claim 1, characterized in that: the data of the ecological sensitive area are stored in a cloud server database in an OgrDataSource mode, layered storage is carried out according to an administrative division and data categories, a user carries out data loading through the administrative division and the categories, design line data are loaded and displayed in a local vector data loading mode, images related to the water and soil conservation process are loaded into a main map in a local offline grid data loading mode, and loading comparison can also be carried out in a split screen module.
3. The GIS-based environment-friendly detection system for the power transmission and transformation project according to claim 1, characterized in that: the various types of analyses of the system are processed in the data layer geo-processing module.
4. A method for implementing the GIS-based environmental protection detection system for electric transmission and transformation projects according to any one of claims 1-3, comprising: the method specifically comprises the following steps:
s1, setting a map coordinate system and a map range, loading an online map or a local offline raster image as a subsequent analysis background map, and also being capable of being used for multi-period image comparison analysis;
s2, after the user account logs in, loading basic vector data of the ecological sensitive area according to the administrative region, performing color matching rendering according to the specification requirement, and using the basic vector data as basic data of environmental protection detection;
s3, loading power transmission and transformation engineering line data to be detected in an environment-friendly manner, and configuring patterns, wherein the patterns comprise point patterns and line patterns, and the point patterns adopt tower-rod patterns by default;
s4, setting relevant environment protection detection parameters, setting detection default parameters by the system, and performing reference according to relevant specifications;
and S5, carrying out environment-friendly detection on various power transmission and transformation projects, including automatic distance measurement and major change analysis.
5. The GIS-based power transmission and transformation project environment-friendly detection method according to claim 4, characterized in that: the ecological sensitive area data comprises a national-level geological park, a national-level scenery scenic spot, a national-level forest park, a national-level wetland park, a national-level natural protection area, a provincial-level scenery scenic spot, a provincial-level forest park, a provincial-level wetland park, a provincial-level natural protection area, an aquatic germplasm resource protection area, a drinking water source area and a natural protection area, and meanwhile, the data can be added in a self-defining mode for subsequent analysis.
6. The GIS-based power transmission and transformation project environment-friendly detection method according to claim 4, characterized in that: the method comprises the steps of selecting sites with lines, judging the spatial positions of a tower pole, the lines and an ecological sensitive area in real time, timely modifying improper sites, and solving the problem of environmental evaluation in the design stage.
7. The GIS-based power transmission and transformation project environment-friendly detection method according to claim 4, characterized in that: in the step S5, the automatic ranging helps the user to analyze the distance between the line data and the sensitive area and the sensitive point, analyze the buffer area of the line, analyze the spatial intersection between the buffer area and the ecological data, calculate the shortest distance between the line and the intersected ecological data, and prompt the designer to have a potential ecological impact problem at the corresponding position for timely adjustment.
8. The GIS-based power transmission and transformation project environment-friendly detection method according to claim 4, characterized in that: in the step S5, the important change is that in the loop evaluation and review, the requirement that the ratio of the transverse displacement of the acceptance line to the designed line exceeds 500 meters in length cannot exceed 30%, the designed line is analyzed by a buffer area with a radius of 500 meters, the buffer area and the acceptance line are analyzed by a symmetry difference, data of the transverse displacement exceeding 500 meters are obtained, and the length and the total length ratio of the buffer area and the acceptance line are calculated to determine whether the transverse displacement exceeds 30%.
9. The GIS-based power transmission and transformation project environment-friendly detection method according to claim 4, characterized in that: aiming at the environmental water conservation restoration work, the environmental restoration condition after the engineering construction is intuitively known through the comparison and analysis of satellite images or aviation flying images in different periods and the view comparison of the same position of the images in different periods.
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