A large-scale site earthwork optimization method and system for new energy projects

Abstract

The present invention discloses a large-scale site earthwork optimization calculation method and system for new energy projects, belonging to the technical field of site earthwork optimization calculation. The method divides the project site into multiple sub-blocks by multiple levels in a fission manner based on the topography and landform data of the project site and under the condition that set terrain parameters are met. The project site is then divided into multiple sub-blocks, and the earthwork filling and excavation engineering quantities of the two adjacent levels after the final level division are respectively calculated. The optimal earthwork engineering quantity of the site leveling is determined according to the optimization rate ω. The method can optimize the earthwork engineering quantity of the site leveling to the greatest extent and save the engineering investment in the site leveling stage of the project to a great extent.

Description

Technical Field

[0001] The present invention relates to the technical field of site earthwork optimization calculation, and in particular to a large-scale site earthwork optimization method and system for new energy projects. Background Art

[0002] Site leveling is a crucial step in the preparation phase of new energy projects. For medium and large-scale new energy projects, especially, if the entire site needs to be leveled, the earthwork involved is enormous. This can significantly impact the overall project cost and return on investment, and can even affect the owner's investment decision. Therefore, during the site leveling design phase, it's crucial to optimize the design and minimize both fill and excavation while maintaining a balanced balance, thereby minimizing the overall site leveling workload and cost.

[0003] The traditional earthwork calculation method for site leveling is to design the site leveling in a flat slope, stepped, or a combination of the two, based on the original natural terrain of the site. At the same time, in combination with the design requirements for the horizontal and vertical slopes of the site leveling, and with the help of the current mainstream earthwork calculation software, perform a one-time, non-differentiated site leveling and site leveling earthwork calculation. However, most of the current new energy projects are medium- to large-scale projects, especially photovoltaic or "photovoltaic +" projects of large new energy bases, which often cover tens of square kilometers. If the traditional site leveling earthwork calculation method is used to perform a one-time, non-differentiated site leveling for the entire site, the earthwork calculation will often lead to large deviations due to local terrain fluctuations and sudden changes:

[0004] After the internal leveling of the site, the fill and excavation heights in some areas are too large, which is not conducive to ensuring the stability of the site foundation and project quality control. After the sloping treatment at the edge of the site, the fill and excavation heights of some slopes are too large, which is not conducive to ensuring the stability of the site slopes, nor is it conducive to the vertical transition between the project site and the surrounding plots. At the same time, the excessive fill and excavation slopes will also cause the project to invisibly increase the amount of additional high slopes and retaining walls, as well as the area of land requisitioned and leased, which is not conducive to the quality, progress and cost control of the project, and may even affect the project investment and returns.

[0005] During the construction of internal leveling and edge sloping of the site, if the filling and excavation height is too large, the cost of the project earthwork will be greatly affected due to the technical requirements of layered backfilling, rolling and compaction, which is not conducive to the project progress and cost control.

[0006] The earthwork volume calculated by performing a one-time, non-differentiated site leveling on the entire site will have a large deviation from the earthwork volume calculated after optimization, and the accuracy is not high, which will affect the project earthwork cost and even the overall investment and benefits of the project. Summary of the Invention

[0007] In response to the problems existing in the prior art, the present invention provides a method and system for optimizing the calculation of earthwork on large sites of new energy projects, which solves the problems existing in the traditional method of one-time and non-differentiated site leveling, such as excessive filling and excavation heights inside the site and on the slopes, and large deviation and low accuracy of the site leveling earthwork volume compared to the optimized earthwork volume.

[0008] The present invention is achieved through the following technical solutions:

[0009] A large-scale earthwork optimization method for a new energy project comprises the following steps:

[0010] Step 1: Divide the project site into multiple first-level blocks based on the topography and landform data of the project site;

[0011] Step 2: Based on the terrain data of each first-level block, the first-level block is further divided into multiple second-level blocks;

[0012] Step 3: Repeat step 2 until the set conditions are met, and calculate the earthwork and excavation volume of the project site after the final block and its corresponding upper block are divided;

[0013] Step 4: Calculate the optimization rate ω of the site leveling earthwork filling and excavation engineering volume of the final block compared with the corresponding previous block, and determine the optimal site leveling earthwork filling and excavation engineering volume of the project based on the optimization rate.

[0014] Preferably, in step 1, the project site is divided into a plurality of first-level blocks according to the terrain data of the project site and restrictive design factors, including a block with flat terrain, a block with sudden terrain changes, and a restricted block.

[0015] Preferably, the restrictive design factors include environmental protection areas, existing buildings and structures, above-ground and underground pipeline facilities, historical sites and other unusable land in the project site.

[0016] Preferably, in step 2, each first-level block outside the restricted area is divided into two levels.

[0017] Preferably, the flat terrain blocks are divided according to the slope and the slope direction, and the sudden terrain blocks are divided according to the continuous change of the slope.

[0018] Preferably, when dividing each level of blocks, a field-level transition zone is provided between adjacent sub-blocks.

[0019] Preferably, the calculation method for the earthwork and excavation volume of the project site leveling in step 3 is as follows:

[0020] The filling and excavation quantities of each sub-block after division are calculated, and the summarized earthwork filling and excavation quantities of the project site are obtained by summing up the filling and excavation quantities of each sub-block.

[0021] Preferably, the method for determining the optimization rate ω in step 4 is as follows:

[0022] ω=|(Q i+1 -Q i ) / Q i |, i∈n.

[0023] Among them, Q i is the earthwork excavation and filling volume of the entire site after the i-th block division.

[0024] Preferably, in step 4, when the optimization rate ω is less than the set value, the earthwork excavation and filling volume of the project site after the last division is used as the optimal site leveling volume;

[0025] When the change amplitude is greater than the set value, step 3 is repeated until the optimization rate ω is less than the set value.

[0026] A system for optimizing earthwork calculation method for large-scale sites of new energy projects, comprising:

[0027] The primary division module is used to divide the project site into multiple primary blocks based on the topography and landform data of the project site;

[0028] A secondary division module is used to divide the primary blocks again according to the terrain data of each primary block to form multiple secondary blocks;

[0029] The engineering quantity calculation module is used to repeatedly execute the operations of the secondary division module until the set conditions are met, and calculate the earthwork and excavation quantities of the project site after the final block and its corresponding upper block division;

[0030] The output module is used to calculate the optimization rate ω of the site leveling earthwork filling and excavation engineering volume of the final block compared with the corresponding previous block, and determine the optimal site leveling earthwork filling and excavation engineering volume of the project based on the optimization rate.

[0031] Compared with the prior art, the present invention has the following beneficial technical effects:

[0032] The present invention discloses a method for optimizing the calculation of earthwork at a large site of a new energy project. The method divides the project site into multiple sub-blocks by using a fission method based on the topographic and geomorphological data of the project site and under the condition that set terrain parameters are satisfied. The sub-blocks are then divided into multiple sub-blocks. The earthwork filling and excavation quantities of the site leveling are then calculated for the two adjacent summaries after the final division. The optimal earthwork quantity of the site leveling is determined based on the optimization rate ω. This method can optimize the earthwork quantity of the site leveling to the greatest extent and significantly save the engineering investment in the site leveling stage of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The figure is a flow chart of the earthwork optimization calculation method of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings, which are intended to explain rather than limit the present invention.

[0035] See Figure 1 A large-scale earthwork optimization method for a new energy project includes the following steps:

[0036] Step 1: Obtain the topographic data and restrictive design factors of the project site based on the topographic map of the project site;

[0037] Specifically, terrain data includes the topography, topography, slope, and slope direction of the project site. Restrictive design factors include environmental protection areas, existing buildings and structures, above-ground and underground pipeline facilities, scenic spots and historical sites, and land that is not usable due to policy regulations.

[0038] Step 2: Divide the project site into multiple first-level blocks based on terrain data and restrictive design factors, and set a site-level transition zone with a width of B between adjacent first-level blocks;

[0039] The project site is divided into multiple first-level blocks according to the flat terrain, undulating terrain and restricted areas. The multiple first-level blocks include flat terrain blocks, terrain mutation blocks and restricted blocks, and a field leveling transition zone is set between each block to facilitate the field leveling and slope treatment between each block according to the actual situation on site to ensure a smooth transition after the field leveling of each block.

[0040] When dividing the blocks, the project site is divided according to the site slope and slope direction. The area with an average slope of less than 10% is divided into a flat terrain block, and the area with an average slope greater than or equal to 10% and a large slope change rate is divided into a sudden terrain block.

[0041] It should be noted that each first-level block can be composed of one closed area or multiple closed areas.

[0042] Step 3: Based on the terrain data, each primary block outside the restricted block is divided into a secondary block to form multiple secondary blocks. The area of each secondary block is kept as uniform as possible, and a field-level transition zone with a width of B is set between adjacent secondary blocks.

[0043] The width B of the site leveling transition zone is generally consistent with the site leveling design grid spacing, set to 10m or 20m, and can also be adjusted appropriately according to the actual site conditions.

[0044] Step 4: Calculate the earthwork volume of each secondary block according to the site leveling calculation method, and calculate the total site leveling earthwork excavation and filling volume of the project site based on the earthwork volume of each secondary block.

[0045] In order to improve the calculation accuracy, combined with the requirements of the site design for longitudinal and transverse slopes, the current mainstream earthwork calculation software is used to optimize the calculation of the final sub-blocks of various terrains to ensure that the filling and excavation of each final sub-block is balanced and the engineering volume is minimized; for the field leveling transition zone with a width of B between each block, the slope is reduced between adjacent blocks, and the slope earthwork volume is counted.

[0046] The earthwork calculation programs include Feishida earthwork calculation software, Hongye earthwork calculation software, Sweil three-dimensional quantity calculation software, Suanwang installation quantity calculation and Guanglianda civil engineering quantity calculation, etc.

[0047] Step 5: Repeat the method of steps 3-4 to divide each secondary block into multiple tertiary blocks, and determine the total site leveling earthwork excavation and filling volume of the project site corresponding to the tertiary blocks.

[0048] Step 6: Determine the earthwork excavation and filling volume Q of the entire site leveling at level i+1 i+1 Relative to the total earthwork excavation and filling volume Q of the i-th level i The optimization rate ω is expressed as follows:

[0049] ω=|(Q i+1 -Q i ) / Q i |, i∈n.

[0050] Among them, Q i is the earthwork excavation and filling volume of the entire site after the i-th block division.

[0051] Step 7: Compare the optimization rate ω with the set value When the optimization amplitude ω is greater than the set value Repeat steps 5-6 and divide each third-level block into multiple levels again, so that the terrain of each final sub-block is relatively uniform and flat, until the optimization range is less than the set value.

[0052] When the optimization range is less than the set value The total earthwork excavation and filling volume Q i+1 As the optimal site leveling project volume, at this time, the filling and excavation projects of the entire site are basically balanced and the project volume is the smallest. The entire site is flat while meeting the horizontal and vertical design slopes, and the terrain changes are uniform and gentle.

[0053] In this embodiment, preferably, the setting value It is 5%, and can be adjusted appropriately according to the actual situation of the project.

[0054] Example 1

[0055] In order to improve the calculation efficiency, the project site is divided into multiple levels until the sub-blocks formed at each level meet the requirements. The slopes of the sub-blocks with gentle terrain change relatively evenly and gently, and the slopes of the sub-blocks with sudden terrain change change continuously and evenly. Then, the earthwork filling and excavation engineering volume Q of the project site after the division of the front and rear adjacent blocks is calculated respectively. i and Q i+1 , and calculate the optimization rate ω. When the optimization rate ω does not meet the requirements, the sub-blocks are divided again and the optimization rate ω is calculated repeatedly until the optimal site leveling engineering quantity is obtained.

[0056] Example 2

[0057] A system for optimizing earthwork at large sites of new energy projects, comprising:

[0058] The primary division module is used to divide the project site into multiple primary blocks based on the topography and landform data of the project site;

[0059] The secondary division module divides each primary block into multiple secondary blocks according to the terrain data of each primary block;

[0060] The engineering quantity calculation module is used to repeat the operations of the secondary division module until the set conditions are met, and respectively determine the last block division and the corresponding project site leveling earthwork excavation and filling engineering quantities after the previous block division;

[0061] The output module is used to determine the optimization rate ω of the earthwork excavation and filling engineering quantities of the two project sites, and determine the optimal site leveling engineering quantities based on the optimization rate ω.

[0062] Example 3

[0063] Taking the site leveling calculation of a new energy project as an example, the land area within the project red line is 1691.9580hm 2 According to the project's own requirements, the slope after site leveling is no more than 2%. With the help of Feishida GPCAD V5.0 earthwork calculation software, according to the optimization design ideas of the present invention, the site earthwork volume and optimization rate after multi-level division are summarized as shown in the following table:

[0064]

[0065]

[0066] As shown above: After the four-level block division, the earthwork optimization rate is controlled within 5% compared with the third-level block. The earthwork volume of the site leveling and excavation is 15607322m after the first-level block division. 3 Optimized to 10530823m 3The total optimized earthwork volume is 5,076,499 m 3 The overall earthwork optimization rate was 32.53%, saving 30.45899 million yuan in site leveling project costs.

[0067] The present invention provides a large-scale earthwork optimization method for new energy project sites. By performing multiple optimization calculations on the site, the optimal site leveling workload is determined. At this point, the fill and excavation workloads for the entire site are essentially balanced and minimized. The entire site is flat, meeting the designed horizontal and vertical slopes, and the topography changes evenly and gently. This method can maximize the optimization of site leveling earthwork workloads, particularly for medium- and large-scale new energy project sites, significantly reducing project investment during the site leveling phase.

[0068] The above content is only for explaining the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A large-scale earthwork optimization method for a new energy project, characterized in that: The following steps are involved: Step 1: Divide the project site into multiple first-level blocks based on the topography and landform data of the project site; Based on the topography data of the project site and restrictive design factors, divide the project site into multiple first-level blocks, including flat terrain blocks, sudden terrain blocks, and restricted blocks; Step 2: Based on the terrain data of each first-level block, the first-level block is further divided into multiple second-level blocks; Step 3: Repeat step 2 until the set conditions are met. When dividing each level of blocks, set a site leveling transition zone between the adjacent sub-blocks formed; calculate the site leveling earthwork and excavation engineering volume of the project site after the final block and its corresponding upper block division respectively; Step 4: Calculate the optimization rate ω of the site leveling earthwork filling and excavation engineering quantity of the final block compared to the corresponding previous block, and determine the optimal site leveling earthwork filling and excavation engineering quantity of the project site based on the optimization rate; when the optimization rate ω is less than the set value, the site leveling earthwork filling and excavation engineering quantity of the project site after the last division is used as the optimal site leveling engineering quantity; when the change range is greater than the set value, repeat step 3 until the optimization rate ω is less than the set value; The method for determining the optimization rate ω is as follows: ω=|(Q i+1 -Q i ) / Q i |,i∈n Among them, Q i is the earthwork excavation and filling volume of the entire site after the i-th block division.

2. The large-scale earthwork optimization method for a new energy project according to claim 1 is characterized in that: The restrictive design factors include environmental protection areas, existing buildings and structures, above-ground and underground pipeline facilities, historical sites and other unusable land in the project site.

3. The large-scale earthwork optimization method for a new energy project according to claim 2 is characterized in that: In step 2, each first-level block outside the restricted area is divided into two levels.

4. The large-scale earthwork optimization method for a new energy project according to claim 2 is characterized in that: The flat terrain blocks are divided according to the slope and slope direction, and the sudden terrain blocks are divided according to the continuous change of slope.

5. The large-scale earthwork optimization method for a new energy project according to claim 1 is characterized in that: The calculation method for the earthwork and excavation volume of the project site leveling described in Step 3 is as follows: The filling and excavation quantities of each sub-block after division are calculated, and the summarized earthwork filling and excavation quantities of the project site are obtained by summing up the filling and excavation quantities of each sub-block.

6. A system for executing the large-scale site earthwork optimization calculation method for a new energy project according to any one of claims 1 to 5, characterized in that: include, The primary division module is used to divide the project site into multiple first-level blocks based on the topography and landform data of the project site. Based on the topography data of the project site and restrictive design factors, the project site is divided into multiple first-level blocks, including flat terrain blocks, sudden terrain blocks and restricted blocks. A secondary division module is used to divide the primary blocks again according to the terrain data of each primary block to form multiple secondary blocks; The engineering quantity calculation module is used to repeatedly execute the operations of the secondary division module until the set conditions are met, and calculate the earthwork and excavation quantities of the project site after the final block and its corresponding upper block division; The output module is used to calculate the optimization rate ω of the site leveling earthwork filling and excavation engineering quantity of the final block compared with the corresponding previous block, and determine the optimal site leveling earthwork filling and excavation engineering quantity of the project based on the optimization rate; when the optimization rate ω is less than the set value, the site leveling earthwork filling and excavation engineering quantity of the project site after the last division will be used as the optimal site leveling engineering quantity; when the change range is greater than the set value, the execution is repeated until the optimization rate ω is less than the set value; The method for determining the optimization rate ω is as follows: ω=|(Q i+1 -Q i ) / Q i |,i∈n Among them, Q i is the earthwork excavation and filling volume of the entire site after the i-th block division.

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