CN115510607A - Three-electricity migration and transformation design method based on three-dimensional live-action modeling technology - Google Patents
Three-electricity migration and transformation design method based on three-dimensional live-action modeling technology Download PDFInfo
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- CN115510607A CN115510607A CN202210805502.6A CN202210805502A CN115510607A CN 115510607 A CN115510607 A CN 115510607A CN 202210805502 A CN202210805502 A CN 202210805502A CN 115510607 A CN115510607 A CN 115510607A
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Abstract
The invention discloses a three-electricity migration and transformation design method based on a three-dimensional live-action modeling technology, which comprises the following steps of S1, carrying out three-dimensional live-action modeling on an existing line, and importing a GIS map and a railway line map; s2, judging whether the distance value between the existing line and the railway route path is not greater than a minimum allowable threshold value or not, and marking the area around the line which is not greater than the minimum allowable threshold value; s3, acquiring the area of a peripheral area of which the positioning information is larger than that of the mark area as a pre-migration and transformation area, and determining the migration and transformation area by taking the intersection point of the boundary and the existing line as the starting point and the end point of the migration and transformation line; and S4, carrying out gridding treatment on the relocation and transformation area, judging whether the relocation and transformation area meets the site selection condition or not, and finishing automatic generation of a pre-planned relocation and transformation line path. Based on the three-dimensional live-action modeling technology, the GIS geographic information and the geological information are combined to plan and design the three-live-action modified line, the problem of accuracy of manually using a paper map to select the line site is solved, the planning and design efficiency is greatly improved, and the design period is shortened.
Description
Technical Field
The invention relates to the technical field of migration project management, in particular to a three-electromigration-transformation design method based on a three-dimensional live-action modeling technology.
Background
The three-electric-transfer-to-change method in railway engineering construction is an important link which needs to be solved in the whole engineering firstly and necessarily, is a 'project before a station' of a unit before the station, and has the characteristics of time tightness, strong policy, complex condition, wide coordination range and high difficulty.
At present, the path of a migration route after three-electricity removal is mostly selected after a paper map is finished and a site is surveyed, and then the path is readjusted to form a final path. The following disadvantages exist:
1. existing lines (such as power lines and communication lines), newly-built or planned railway lines are long in path and wide in area, most maps are drawn for a long time, and geographic information is lacked, so that the selection of a moving and modifying route area and a starting point and a finishing point of the lines is inaccurate, and the error is large;
2. because the drawing age of the map is long, a plurality of additional road routes, buildings and the like cannot be reflected on the map in time, and the site survey must be carried out to collect the site environment data along the route, so that the whole planning and designing period is longer;
3. influence factors in the migration and modification route area are more, and an optimal migration and modification route path is difficult to design according to factors such as actual landforms, landforms and land conditions.
Disclosure of Invention
Aiming at the problems in the technical background, the invention aims to provide a three-electric migration and transformation design method based on a three-dimensional live-action modeling technology, wherein a three-electric migration and transformation line is planned and designed based on the three-dimensional live-action modeling technology and combined with geographic information and geological information of a GIS (geographic information system) and is visually displayed; the problem of accuracy of manually using a paper map to select the route site is solved, the planning and designing efficiency is greatly improved, and the design period is shortened.
In order to achieve the above purpose, the invention adopts the technical scheme that:
a three-electricity migration and transformation design method based on a three-dimensional live-action modeling technology comprises the following steps:
s1, performing three-dimensional live-action modeling on an existing line (communication and power line), importing a GIS map, constructing a three-dimensional live-action model of the existing line by using three-dimensional modeling software, importing a newly-built or planned railway line map, and establishing a corresponding geographic information database;
s2, judging whether the distance value D between the existing line and the railway route path is not larger than the minimum allowable threshold value D or not Min For a value not greater than the minimum allowable threshold D Min Is marked along the line peripheral region;
s3, acquiring the area of a peripheral area of which the positioning information is larger than that of the mark area as a pre-migration and modification area, acquiring boundary positioning information of the pre-migration and modification area, taking the intersection point of the boundary of the pre-migration and modification area and the existing line as the starting point and the end point of the migration and modification line, and determining the migration and modification area by taking the center of the linear distance between the starting point and the end point of the migration and modification line as the circle center and taking half of the linear distance as the radius;
step S4, gridding the relocation and modification area, acquiring geographic information and geological information of each grid, judging whether the geographic information and the geological information accord with site selection conditions or not, screening the grids which accord with the site selection conditions, and finishing automatic generation of a pre-planned relocation and modification line path;
and S5, determining the optimal route path of the relocation route by combining with the on-site investigation and verification condition.
In a specific technical solution of the present invention, in step S4, the meeting the address selection condition means: the vertical distance L between the grid and the railway line path is greater than a maximum allowable threshold D Max And not in the risk area; automatic generation from risk values of individual gridsA plurality of pre-planned relocation route paths.
In the technical scheme, the risk value is evaluated according to the geological information of the grid, and when the grid is an area easy to be washed by rainwater or an area with ponding water, or the grid contains obstacles, the grid is directly determined as a risk area;
and (4) carrying out weight analysis on the influence factors of the risk value by adopting an analytic hierarchy process, and calculating the risk value of the grid.
Still further, the influencing factors include terrain type, geological type, vegetation type, body of water, level one road, highway, railway, and/or housing.
In another specific technical solution of the present invention, in step S4, the meeting the address selection condition further includes: the intersection angle between the pre-planned relocation route path and the railway route is not smaller than 45 degrees.
Further, in step S2, the positioning information at least includes longitude, latitude, and elevation.
Furthermore, when the starting point and the end point of the relocation and transformation line are positioned at two sides of the railway line, namely the existing line is crossed with the railway line, and steel pipes are selected at the crossed parts for protecting and burying or passing through in a bridge and culvert stereo crossing manner;
when the three-dimensional crossing mode is selected to pass, the method also comprises the step of planning the elevation of the moved and changed line by combining the elevation information of the railway line in the three-dimensional live-action model, so that the two conditions are met: the distance from the outer edge of the line tower to the center of the railway track is not less than 3.1m of the height of the tower.
Further, when the starting point and the end point of the relocation route are positioned at the same side of the railway route, whether the grids of the relocation area positioned at the same side of the railway route meet the site selection condition is judged:
and if the pre-planned relocation route meets the site selection condition, generating the pre-planned relocation route on the same side of the railway route in a same-direction translation mode.
And further, comparing risk values of grids positioned on the same side and the different side of the railway line in the transition area, and adopting a different-side protection translation construction method when the risk value of the grid positioned on the different side of the railway line is lower.
Further, when the different-side protection translation mode is adopted, a symmetrical point of an end point or a starting point on the different side of the railway line is used as a virtual point, and the transition area is determined again by the starting point or the end point and the virtual point.
Compared with the prior art, the invention has the following advantages:
the three-electricity-to-live-action-based three-live-action modified line is planned and designed based on a three-dimensional live-action modeling technology and by combining geographic information and geological information of a GIS (geographic information system) and is visually displayed; the problem of accuracy of manual line site selection by using a paper map is solved, the planning and design efficiency is greatly improved, and the design period is shortened;
and carrying out gridding treatment on the determined migration and transformation area, fully considering the influence degree of each actual factor on grid site selection conditions, acquiring the conditions of geological structures, ground roads, buildings and the like through a GIS, optimizing a path selection scheme of the migration and transformation line, and determining the optimal migration and transformation line path by combining with the field survey condition.
Drawings
FIG. 1 is a flow chart of a three-electrization design method based on a three-dimensional live-action modeling technology according to the present invention;
FIG. 2 is a schematic diagram illustrating a migration and modification area marking of an existing line in the present invention;
FIG. 3 is a schematic diagram of a gridding process of a migration and modification area according to the present invention;
FIG. 4 is a schematic view of the processing of the transition route with the start and end points located on both sides of the railway route;
FIG. 5 is a schematic view of a process of crossing a transition route with a railway route;
FIG. 6 is a schematic diagram of a translation process using an opposite side guard.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, a three-dimensional live-action modeling technology-based three-electricity migration and change design method includes the following steps:
s1, performing three-dimensional live-action modeling on an existing line (communication and power line), importing a GIS map, constructing a three-dimensional model of the existing line, importing a newly-built or planned railway line map, and establishing a corresponding geographic information database;
specifically, aerial survey is carried out on the existing line in a full line by adopting advanced oblique photography equipment and technology, and the acquired data is used for generating a live-action three-dimensional model; and carrying out image fusion on the BIM model and the real scene three-dimensional model based on oblique photography.
Importing a GIS map, and establishing a three-dimensional live-action modeling model based on the GIS by utilizing foreign open source modeling software such as ContextCapture, photomesh and the like; the GIS technology is an important spatial information system, and can integrate the analysis of map visual effect and geographic information, thereby carrying out a series of digital statistical management and processing on geographic distribution data. The method can describe two-dimensional and three-dimensional effects of the earth surface, the underground and the atmosphere, and supplement geological analysis, flooding analysis, environmental analysis and other external space analysis of the moving and reforming whole line.
And the high-precision BIM model provides an important data source for the GIS, integrates the graph and non-graph information of the building, parametrically integrates the information, and realizes a data-driven model. The BIM and the GIS are fused and cooperated in the three-electricity migration and transformation field, and the informatization and visual management of the migration and transformation line engineering is realized.
S2, inverting the positioning information of the existing line and the railway line in different colors, displaying the inverted positioning information in the three-dimensional real scene model, and judging whether the distance value D between the existing line and the railway line is not more than the minimum allowable threshold value D or not Min For not greater than the minimum allowable threshold D Min Is marked along the line peripheral region;
in an embodiment of the present invention, the existing routes and railway routes are visually displayed in different colors in the three-dimensional live-action model, specifically, positioning information along the route path, including but not limited to longitude, latitude and elevation information, is displayed, and the geographic information of the existing routes and railway routes is displayed in the three-dimensional live-action model.
At the upper partOn the basis, comparing a distance value D between the paths of the existing line and the railway line, wherein the distance value D refers to the shortest straight line distance between the paths of the two lines, and when the distance value D is less than or equal to a minimum allowable threshold value D Min To the edge minimum allowable threshold D Min Is marked as shown in fig. 2.
S3, acquiring the area of a peripheral area of which the positioning information is larger than that of the mark area as a pre-migration and modification area, acquiring boundary positioning information of the pre-migration and modification area, taking the intersection point of the boundary of the pre-migration and modification area and the existing line as the starting point and the end point of the migration and modification line, and determining the migration and modification area by taking the center of the linear distance between the starting point and the end point of the migration and modification line as the circle center and taking half of the linear distance as the radius;
as shown in fig. 2, on the basis of the area range marked in step S2, geographic information of the peripheral line installation base bars is acquired, a pre-relocation area is defined by the area of the peripheral area, and intersection points of the boundary of the pre-relocation area and the existing line (i.e., the peripheral line installation base bars) are acquired as the start point and the end point of the relocation line, and on the basis, the relocation area is determined again.
S4, carrying out gridding processing on the relocation and transformation area, acquiring geographic information and geological information of each grid, judging whether the geographic information and the geological information accord with site selection conditions, screening out the grids which accord with the site selection conditions, and finishing automatic generation of a pre-planned relocation and transformation route path;
as shown in fig. 3, the migration and modification area is divided into grids, and each grid is respectively judged whether to meet the foundation pile site selection condition, and it must be satisfied that the vertical distance L between the grid and the railway line path is greater than the maximum allowable threshold D Max And not in risk areas; the unqualified grids are marked with culling marks, such as X marks, or selected colors. When the grid is an area easy to be washed by rainwater or an area with water or the grid contains obstacles, the grid is directly determined as a risk area.
After determining the grids which accord with the site selection condition of the foundation pile, evaluating the risk values of the grids according to the geological information of the grids:
and (4) carrying out weight analysis on the influence factors of the risk value by adopting an analytic hierarchy process, and calculating the risk value of the grid. The influencing factors include terrain type, geological type, vegetation type, body of water, level one highway, railway, and/or housing. In particular, the amount of the solvent to be used,
and automatically generating an optimal preplanned relocation route path by utilizing a Dijkstra algorithm according to the risk value of each grid. Specifically, in the three-dimensional live-action model, the risk conditions of the grid region are visually displayed by adopting colors of different depths according to the risk values of the grid, so that the three-dimensional live-action model is more intuitive.
And S5, determining the optimal route path of the relocation route by combining with the on-site investigation and verification condition.
In the specific embodiment of the present invention, as shown in fig. 4, when the starting point and the ending point of the transition route are located at two sides of the railway route, that is, the existing route and the railway route are crossed, steel pipes are selected at the crossing position for protection and burying or passing through in a bridge and culvert stereo crossing manner;
in this embodiment, when the grade crossing mode is selected to pass, the method further includes planning the elevation of the migrated and modified track by combining the elevation information of the railway track in the three-dimensional live-action model, so that the two conditions are satisfied: the distance from the outer edge of the line tower to the center of the railway track is not less than 3.1m of the height of the tower. As shown in FIG. 5, the distance L between the outer side of the line tower and the center line of the railway line is not less than the height H plus 3.1m.
When the starting point and the end point of the relocation route are positioned at the same side of the railway route, judging whether the grids of the relocation area positioned at the same side of the railway route meet the site selection condition:
if the location conditions are met, generating a pre-planned relocation route on the same side of the railway route in a same-direction translation mode, as shown in fig. 3.
And comparing the risk values of the grids positioned on the same side and the different side of the railway line in the migration and transformation area, and adopting a different-side protection translation construction method when the risk value of the grid positioned on the different side of the railway line is lower.
As shown in fig. 6. When the different-side protection translation construction scheme is determined to be selected, the moving area is determined again by taking a symmetrical point of the end point or the starting point on the different side of the railway line as a virtual point and taking the center of the straight-line distance between the starting point or the end point and the virtual point as a circle center.
In another embodiment of the present invention, in step S4, the selection of the pre-planned relocation route path further satisfies: the intersection angle between the pre-planned relocation route path and the railway line is not suitable to be smaller than 45 degrees.
And after the foundation pile is determined to meet the site selection condition, calculating the intersection angle of the generated pre-planned relocation route and the railway route, and avoiding the intersection angle from not meeting the standard requirement of related files. As shown in fig. 6, the intersection angle a of the transition route and the railway route is greater than 45 degrees.
In an embodiment of the present invention, displaying the transition route in S5 in different colors according to the construction progress, and displaying the transition route in the three-dimensional live-action model.
Specifically, the relocation route completed in construction is displayed in green, the relocation route in construction is displayed in yellow, the relocation route completed in design and planned for construction is displayed in gray, and the relocation route incomplete in design is displayed in red.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A three-electricity migration and transformation design method based on a three-dimensional live-action modeling technology is characterized by comprising the following steps:
s1, performing three-dimensional live-action modeling on an existing line, importing a GIS map, constructing a three-dimensional live-action model of the existing line by using three-dimensional modeling software, importing a newly-built or planned railway line map, and establishing a corresponding geographic information database;
s2, judging whether the distance value D between the existing line and the railway route path is notGreater than a minimum allowable threshold D Min For a value not greater than the minimum allowable threshold D Min Is marked along the line peripheral region;
s3, acquiring the area of a peripheral area of which the positioning information is larger than that of the marked area from the geographic information database as a pre-migration and modification area, acquiring boundary positioning information of the pre-migration and modification area, taking the intersection point of the boundary of the pre-migration and modification area and the existing line as the starting point and the end point of the migration and modification line, and determining the migration and modification area by taking the center of the linear distance between the starting point and the end point of the migration and modification line as the center of a circle and taking half of the linear distance as the radius;
s4, carrying out gridding processing on the relocation area, acquiring geographic information and geological information of each grid, judging whether the geographic information and the geological information accord with site selection conditions of foundation piles, screening out the grids which accord with the site selection conditions, and finishing automatic generation of a pre-planned relocation route path;
and S5, determining the optimal route path of the relocation route by combining with the on-site investigation and verification condition.
2. The three-dimensional live-action modeling technology-based three-electricity migration and modification design method according to claim 1, wherein in step S4, the meeting of the addressing condition is: the vertical distance L between the grid and the railway line path is greater than a maximum allowable threshold D Max And not in the risk area; and automatically generating a plurality of pre-planned relocation route paths according to the risk value of each grid.
3. The three-electricity migration and transformation design method based on the three-dimensional live-action modeling technology as claimed in claim 2, wherein the risk value is evaluated according to the geological information of the grid, and when the grid is a region easy to be washed by rainwater or a region with water accumulation or contains an obstacle, the grid is directly identified as a risk region;
and (4) carrying out weight analysis on the influence factors of the risk value by adopting an analytic hierarchy process, and calculating the risk value of the grid.
4. The three-dimensional live-action modeling technology-based three-electricity migration and modification design method according to claim 3, wherein the influence factors comprise terrain type, geological type, vegetation type, water body, first-class road, expressway, railway and/or house.
5. The three-dimensional live-action modeling technology-based three-electricity migration and modification design method according to claim 2, wherein in step S4, the meeting of the addressing condition further comprises: the intersection angle between the pre-planned relocation route path and the railway route is not smaller than 45 degrees.
6. The three-dimensional live-action modeling technology-based three-electromigration design method as claimed in claim 1, wherein in step S3, the positioning information at least includes longitude, latitude, and elevation.
7. The three-electric relocation design method based on the three-dimensional live-action modeling technology according to claim 6, characterized in that when the starting point and the ending point of a relocation route are located at two sides of a railway line, namely the existing route and the railway line are crossed, steel pipes are selected at the crossed part for protection and burying or the existing route passes through in a bridge and culvert stereo crossing manner;
when the three-dimensional crossing mode is selected to pass, the method also comprises the step of planning the elevation of the moved and changed line by combining the elevation information of the railway line in the three-dimensional live-action model, so that the two conditions are met: the distance from the outer edge of the line tower to the center of the railway track is not less than 3.1m of the height of the tower.
8. The three-electric migration and transformation design method based on the three-dimensional real-scene modeling technology as claimed in claim 1, wherein when the starting point and the ending point of the migration and transformation route are located on the same side of the railway route, the grid of the migration and transformation area located on the same side of the railway route is judged whether the grid meets the site selection condition:
and if the pre-planned relocation route meets the site selection condition, generating the pre-planned relocation route on the same side of the railway route in a same-direction translation mode.
9. The three-electric migration and transformation design method based on the three-dimensional real-scene modeling technology as claimed in claim 7, wherein risk values of grids on the same side and the opposite side of the railway line in the migration and transformation area are compared, and when the risk value of the grid on the opposite side of the railway line is low, an opposite side protection translation mode is adopted.
10. The three-dimensional live-action modeling technology-based three-electricity migration and transformation design method according to claim 8, characterized in that when a different-side protection translation mode is adopted, a symmetrical point of an end point or a start point on the different side of the railway line is used as a virtual point, and a migration and transformation area is re-determined by using the start point or the end point and the virtual point.
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| CN116070387A (en) * | 2023-03-07 | 2023-05-05 | 山东铁路投资控股集团有限公司 | Digital power line migration design method, device, equipment and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116070387A (en) * | 2023-03-07 | 2023-05-05 | 山东铁路投资控股集团有限公司 | Digital power line migration design method, device, equipment and medium |
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