Construction progress simulation management method and system based on earthwork allocation

Abstract

The invention discloses a construction progress simulation management method and system based on earthwork allocation, and relates to the technical field of earthwork construction, and the method comprises the steps: generating a preset model based on a BIM model and a GIS terrain model; obtaining a digging-filling ratio; obtaining the filling volume V1 of each filling area every day and the highest filling volume V2 required in a single day, counting the unearthed volume V3 of each excavation group in the excavation area every day, and forming a daily matching scheme according to V1, V2 and V3; and presetting a scheduling point based on the preset model and the daily matching scheme, wherein the scheduling point is used for placing excavation equipment and / or providing earthwork reservation. According to the method, the difference of the preset matching paths is compared based on the daily matching scheme, the corresponding area is determined, the scheduling point is set, places with insufficient earthwork supply are supported in time or earthwork is provided by using the scheduling point, and the method is flexible and changeable and can conveniently adapt to uncertain situations in the construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of earthwork construction, and particularly relates to a construction progress simulation management method and system based on earthwork allocation. Background Art

[0002] The construction progress simulation management method for earthwork allocation refers to, before the earthwork construction, predicting, evaluating, and optimizing the earthwork allocation and construction progress during the construction process by simulating the construction plan, so as to ensure the construction quality and safety, improve the construction efficiency, and reduce the construction cost.

[0003] In the known prior art, the BIM3D model is used to transform the two-dimensional drawing into a three-dimensional model, which simplifies the difficulty of reading construction drawings, makes it easier for operators to understand, speeds up the construction speed, improves the construction efficiency, and engineers can formulate a reasonable earthwork allocation plan according to the earthwork volume data and site conditions in the model, including determining the allocation area, allocation direction, allocation quantity, etc. At the same time, the BIM model can also simulate the earthwork construction process and predict possible construction problems and risks, so as to adjust and optimize the allocation plan in time.

[0004] However, in the process of formulating based on the BIM model for the entire earthwork allocation, the filling area and the excavation area are mostly corresponding and bound, and the excavation area and the excavation team are also mostly bound. The allocation plan is too rigid, lacking the necessary flexibility and adjustment space, and sometimes it is difficult to cope with the uncertain factors in the construction process. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction progress simulation management method and system based on earthwork allocation to solve the deficiencies in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A construction progress simulation management method based on earthwork allocation, including the following steps: constructing a BIM model based on construction drawings, constructing a GIS terrain model based on a terrain image database, and generating a preset model based on the BIM model and the GIS terrain model.

[0007] Dividing the strata of each excavation area, obtaining the unit volume of the soil in each section of the strata and the volume of the soil after compaction in the filling area, and obtaining the excavation-fill ratio based on the unit volume and the compaction volume.

[0008] Obtaining the daily filling volume V1 of each filling area and the maximum daily required filling volume V2, and counting the daily excavation volume V3 of each excavation team in the excavation area, and forming a daily matching plan based on V1, V2, and V3.

[0009] Presetting scheduling points based on the preset model and the daily matching plan, and the scheduling points are used to place excavation equipment and / or provide earthwork reserves.

[0010] In a preferred embodiment, the step of generating a preset model based on the BIM model and the GIS terrain model includes: obtaining the construction drawings of the site, and constructing a three-dimensional terrain model, i.e., the BIM model, based on the terrain data provided by the construction drawings.

[0011] Obtain the terrain data of the construction site based on remote sensing technology, GPS technology, and on-site investigation, construct a terrain image database based on the terrain data, construct a GIS terrain model based on the terrain image database, and the information reflected by the GIS terrain model includes: the undulation, slope, and elevation of the terrain. The GIS terrain cooperates with the terrain, geology, and construction plan to optimize the earthwork allocation plan.

[0012] Generate a preset model according to the BIM model and the GIS terrain model.

[0013] In a preferred embodiment, the step of obtaining the excavation and filling ratio based on the unit volume and the compacted volume includes: determining the project scope, excavation and filling demarcation line, excavation area, filling area, and site leveling elevation according to the preset model, and determining the terrain measurement control network points.

[0014] Arrange exploration points on the original site of each excavation area, drill holes at the exploration points and take out the soil, then divide the strata, obtain the unit volume of the soil in each soil layer and mark it as the volume before compaction, obtain the volume of the compacted soil after the filling pressure in the filling area acts on the soil with the unit volume before compaction, mark the volume of the compacted soil as the volume after compaction, and obtain the excavation and filling ratio based on the volume before compaction and the volume after compaction.

[0015] The excavation and filling ratio is used to deduce the required soil volume in the excavation area from the required soil volume in the filling area.

[0016] In a preferred embodiment, the step of forming a daily matching plan based on V1, V2, and V3 includes: there are multiple excavation areas and filling areas, count the daily required filling volume V1 of all filling areas, and compare to obtain the highest filling volume V2 required for a single day.

[0017] Each excavation area is equipped with an excavation team, and the excavation capabilities of each excavation team are different. Count the daily soil output volume V3 of each excavation team in the excavation area.

[0018] Form a daily matching plan based on V1, V2, and V3, and adapt the filling area and the excavation area based on the matching plan. The matching plan uses a day as the unit time.

[0019] In a preferred embodiment, the step of presetting the dispatching points based on the preset model and the daily matching plan includes: determining the excavation and filling areas, transportation methods, and preset matching paths based on the preset model.

[0020] Determine the preset matching path between the filling area and the excavation area according to the minimum element method, and detect and determine the final preset matching path through the imaginary haulage distance method and the potential method.

[0021] Compare the differences in the preset matching paths based on the daily matching plan, and determine the preset matching paths with differences. Lock the corresponding filling area and excavation area, mark them as the specific filling area and the specific excavation area. Determine the central positions of all specific excavation areas based on the preset model, and preset dispatching points at the central positions. The dispatching points are used to place excavation equipment and / or provide earthwork reserves.

[0022] In a preferred embodiment, each matching path corresponds to a group of specific filling areas and specific excavation areas. A group of specific filling areas and specific excavation areas is marked as the corresponding area. Calculate the variance value of the earthwork volume required by each specific filling area and the earthwork volume supplied by the specific excavation area. Obtain the variance values of all groups and sum them to get the total variance value of the earthwork volume. Match the excavation equipment according to the total variance value of the earthwork volume.

[0023] In a preferred embodiment, the excavation equipment reserved at the dispatching point is allocated in real time according to the demand. When a group of corresponding areas appears in the same time period, the excavation equipment goes to the excavation area of the corresponding area.

[0024] When multiple groups of corresponding areas are predicted to appear or no corresponding areas appear at the same time, the excavation equipment conducts earth excavation operations at the dispatching point.

[0025] In the above technical solution, the technical effects and advantages provided by the present invention are as follows: Statistically obtain the daily filling volume of each filling area and the daily earth excavation volume of each excavation team in the excavation area. The solution is no longer fixed, but takes days as the unit, and adapts to the work progress of the filling area by adjusting the transportation route and the position of the excavation team, with a higher degree of adaptation; Compare the differences in the preset matching paths based on the daily matching plan, determine the corresponding areas, set up dispatching points, and use the dispatching points to provide timely support or earthwork for the areas where the earthwork supply is insufficient. It is flexible and changeable, and is convenient for adapting to uncertain situations in the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is the flowchart of the method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Example 1. Refer to Figure 1 As shown, a safety monitoring and alarm method for on-site construction in this embodiment includes the following steps:

[0030] S1. Construct a BIM model based on the construction drawings, construct a GIS terrain model based on the terrain image database, and generate a preset model based on the BIM model and the GIS terrain model. Divide the strata in each excavation area, obtain the unit volume of the soil in each section of the strata and the volume of the soil after compaction in the filling area, and obtain the excavation-fill ratio based on the unit volume and the compaction volume.

[0031] S2. Obtain the daily filling volume V1 of each filling area and the maximum daily filling volume V2 required for a single day, and count the daily excavation volume V3 of each excavation team in the excavation area. Form a daily matching plan based on V1, V2, and V3. Preset scheduling points based on the preset model and the daily matching plan. The scheduling points are used to place excavation equipment and / or provide earthwork reserves.

[0032] As described in the above steps S1 - S2, the earthwork allocation simulates the construction plan, predicts, evaluates, and optimizes the earthwork allocation and construction progress during the construction process to ensure construction quality and safety, improve construction efficiency, and reduce construction costs. However, during the entire process of the earthwork allocation based on the BIM model, the filling area and the excavation area are mostly correspondingly bound, and the excavation area and the excavation team are also mostly bound. The allocation plan is too rigid, lacking necessary flexibility and adjustment space, and sometimes it is difficult to cope with the uncertain factors during the construction process. In this application, the BIM model and the GIS terrain model are fused to generate a preset model, and the 3D model is more accurate. The excavation-fill ratio of the soil in each section of the excavation area is obtained, thereby reducing the error between the excavation volume in the excavation area and the required soil volume in the filling area, and the matching is more accurate; the daily filling volume of each filling area and the daily excavation volume of each excavation team in the excavation area are statistically obtained. The plan is no longer fixed, but takes days as the unit, and adapts to the work progress of the filling area by adjusting the transportation route and the position of the excavation team, with a higher degree of adaptation; based on the daily matching plan, compare the differences in the preset matching paths, determine the corresponding areas, set the scheduling points, and use the scheduling points to provide timely support or earthwork for the areas where the earthwork is insufficient. It is flexible and changeable, and is convenient for adapting to the uncertain situations during the construction process.

[0033] In one embodiment, the generation of the preset model and the acquisition of the excavation and filling ratio S1 include:

[0034] S11. Obtain the construction drawings of the site, and construct a three-dimensional terrain model, i.e., a BIM model, based on the terrain data provided by the construction drawings.

[0035] The complete steps for constructing a BIM model are as follows: Define the project objectives and scope: Determine the specific objectives of the earthwork allocation project, such as shortening the construction period, reducing costs, etc. Define the geographical scope and work content of the project. Collect relevant materials such as topographic maps, geological exploration reports, and design drawings. Select a suitable coordinate system and unit to ensure the accuracy and consistency of the model data. According to the project requirements, establish corresponding layers and linear standards for easy model management and modification. Use BIM software (such as Revit, Civil 3D, etc.) to import terrain data and create a high-precision three-dimensional terrain model. According to the terrain model, divide the excavation area and the filling area. Mark the key information such as the boundaries and elevations of the excavation area and the filling area in the model. According to the earthwork allocation plan, add detailed information such as allocation paths and transportation methods to the model. Use the collision detection function of the BIM software to check for conflicts and errors in the model. According to the detection results, make corresponding adjustments and optimizations to the model. Simulate the earthwork allocation process through the model to verify the feasibility and economy of the plan. According to the simulation results, optimize and improve the plan. Conduct a detailed inspection of the model to ensure the accuracy and integrity of the data. Correct the errors and omissions in the model to improve the reliability of the model. Extract construction drawings from the BIM model, including earthwork allocation drawings, topographic maps, etc. The construction drawings should meet the construction requirements and be easy for construction personnel to understand and use. Share the BIM model data with relevant parties of the project, such as designers, construction personnel, supervisors, etc. Achieve information sharing and collaborative work through the BIM platform to improve the overall efficiency of the project.

[0036] S12. Obtain the terrain data of the construction site based on remote sensing technology, GPS technology, and on-site surveys. Construct a terrain image database based on the terrain data, and construct a GIS terrain model based on the terrain image database. The information reflected by the GIS terrain model includes: the undulation, slope, and elevation of the terrain. The GIS terrain cooperates with the terrain, geology, and construction plan to optimize the earthwork allocation plan.

[0037] The specific steps for constructing a GIS terrain model are as follows: Determine the specific requirements of the earthwork allocation project, including project scope, accuracy requirements, time limits, etc. Collect terrain data from reliable data sources (such as Geospatial Data Cloud, satellite remote sensing data, laser measurement data, etc.). The data should include key information such as ground elevation, surface features, slope, and aspect. Preprocess the collected terrain data, including data cleaning, denoising, calibration, etc. Clean the data to remove outliers and anomalies to ensure the accuracy and reliability of the data. The denoising operation reduces measurement errors and interference and improves data quality. The calibration operation eliminates offsets and distortions in data collection to make it conform to the actual situation of the earth's surface. Use appropriate interpolation methods (such as inverse distance weighting method, ordinary kriging method, triangulation interpolation method, etc.) to interpolate the terrain data. The choice of interpolation method should be determined according to the data characteristics and project requirements. The interpolation result should accurately reflect the terrain undulation and topographic changes. Generate contour lines based on the interpolation result to visually display the terrain undulation and topographic changes. Determine the interval and density of the contour lines and mark the elevation values on the contour lines. Convert the terrain model into a three-dimensional form for visual display. Use three-dimensional modeling software (such as ArcGIS, SketchUp, etc.) to refine and render the terrain. Three-dimensional visualization helps to better understand and analyze terrain features and provides a scientific basis for earthwork allocation. Verify the constructed terrain model to ensure its accuracy and reliability. The model can be compared with on-site measurement data to evaluate the accuracy and applicability of the model. Use the GIS terrain model to calculate the earthwork volume and determine the earthwork volume in the excavation area and filling area. Based on the earthwork volume calculation result, design a reasonable earthwork allocation plan. The allocation plan should consider factors such as transportation route, transportation method, cost-benefit, etc.

[0038] S13. Generate a preset model based on the BIM model and the GIS terrain model.

[0039] S14. Determine the project scope, excavation and filling demarcation line, excavation area, filling area, and site leveling elevation according to the preset model, and determine the topographic survey control network points.

[0040] S15. Arrange exploration points on the original site of each excavation area, drill holes at the exploration points and take out the soil, then divide the strata to obtain the unit volume of the soil in each soil layer and mark it as the pre-compression volume. Obtain the compacted soil volume after the filling pressure in the filling area acts on the pre-compression unit volume of the soil, and mark the compacted soil volume as the post-compression volume. Obtain the excavation and filling ratio based on the pre-compression volume and the post-compression volume. The excavation and filling ratio is used to derive the required soil volume in the excavation area from the required soil volume in the filling area.

[0041] As described in the above steps S11 - S15, the BIM model mainly focuses on the information integration and management inside the building, while GIS focuses on the management of macro regions and geographical information. The integration of the two can achieve the comprehensive integration of information inside and outside the building and construct a complete information system. The BIM technology can greatly improve the quality of construction data, realize the integration and effective collaboration among multi-disciplinary resources, and reduce design errors. While GIS provides rich map presentation forms and powerful spatial query and analysis capabilities. The integration of the two can further improve the accuracy and precision of data. The preset model, combined with the excavation and filling ratio, can clearly understand the actual supply and demand of the excavation area and the filling area. The adaptation between the excavation area and the filling area is more accurate, reducing errors and providing guarantee for the establishment of subsequent dispatching points.

[0042] In one embodiment, the forming of the daily matching plan and the preset dispatching point S2 includes:

[0043] S21. There are multiple excavation areas and multiple filling areas. Stat the daily required filling volume V1 of all filling areas, and compare to obtain the highest filling volume V2 required per day.

[0044] S22. Each excavation area is equipped with an excavation team, and the excavation capabilities of each excavation team are different. Stat the daily earthwork volume V3 excavated by each excavation team in the excavation area. Form a daily matching plan based on V1, V2, and V3, and adapt the filling area and the excavation area based on the matching plan. The matching plan uses a day as the unit time.

[0045] S23. Determine the excavation and filling areas, transportation methods, and preset matching paths based on the preset model. Determine the preset matching paths between the filling area and the excavation area according to the minimum element method, and detect and determine the final preset matching paths through the imaginary transportation distance method and the potential method. Compare the differences in the preset matching paths based on the daily matching plan, and determine the preset matching paths with differences, lock the corresponding filling area and excavation area, mark them as the specific filling area and the specific excavation area, determine the central positions of all specific excavation areas based on the preset model, and preset dispatching points at the central positions. The dispatching points are used to place excavation equipment and / or provide earthwork reserves.

[0046] The minimum element method is an effective method for solving transportation problems, and it is particularly suitable for the selection of transportation paths and the optimization of transportation volume in earthwork allocation. In earthwork allocation, the application steps of the minimum element method are as follows:

[0047] List the freight rate table and the earthwork transfer balance table: The freight rate table lists the transportation costs (usually expressed as transportation distances or transportation fees) from each excavation point to each filling point. The earthwork transfer balance table lists the earthwork volumes of each excavation point and the demands of each filling point.

[0048] Find the minimum freight rate and allocate earthwork: Locate the minimum freight rate in the freight rate table, which usually indicates the lowest transportation cost from a certain excavation point to a certain filling point. Based on the earthwork volume and demand at the excavation and filling points, allocate as much earthwork volume as possible to the path with this minimum freight rate.

[0049] Update the earthwork balance table: After allocating the earthwork, update the earthwork volume and demand at the excavation and filling points. If the earthwork volume at a certain excavation point has been fully allocated, cross it out from the freight rate table.

[0050] If the demand at a certain filling point has been fully met, also cross it out from the freight rate table. Repeat the above steps: Continue to find the next minimum freight rate in the updated freight rate table and allocate the earthwork. Repeat this process until the earthwork volume at all excavation points and the demand at all filling points are satisfied.

[0051] Obtain the optimal allocation plan: The allocation plan obtained by the minimum element method is usually an initial feasible solution. It is necessary to further check whether this plan is optimal, that is, whether it meets the condition of the minimum total transportation volume (or total cost). If it is not an optimal plan, adjustments need to be made until the optimal allocation plan is found.

[0052] In earthwork allocation, the imaginary transportation distance method and the potential method are two commonly used optimization methods.

[0053] The imaginary transportation distance method is an approximate optimization method commonly used in earthwork allocation. Its basic principle is to first assume one or more imaginary transportation distances, and then formulate an earthwork allocation plan based on these imaginary distances. This method is usually used in the preliminary planning stage to quickly obtain a roughly feasible allocation plan. In practical applications, the imaginary transportation distance method is usually considered comprehensively in combination with other factors (such as terrain, road conditions, transportation tools, etc.). By continuously adjusting and optimizing the imaginary distances, the optimal earthwork allocation plan can be gradually approximated. However, it should be noted that since the essence of the imaginary transportation distance method is an approximate method, the results obtained may not be the optimal solution.

[0054] The potential method is a more precise and systematic optimization method, especially suitable for solving complex earthwork allocation problems. The core idea of the potential method is to use potentials (or potential functions) to describe the transportation costs or expenses in earthwork allocation. By constructing a suitable potential function, the complex earthwork allocation problem can be transformed into a mathematical optimization problem. In earthwork allocation, the potential method is usually used to judge the optimality of the solution. Specifically, the potential method can calculate the inspection numbers (also called potential differences) in the earthwork allocation plan, which reflect the changes in transportation costs when a non-basic variable (i.e., the earthwork volume not participating in the allocation) becomes a basic variable (i.e., the earthwork volume participating in the allocation). If all the inspection numbers are non-negative, it means that the current allocation plan has reached the optimal solution; if there are negative inspection numbers, it means that there is still room for further optimization. The advantage of the potential method is that it can provide a clear optimization direction and goal, that is, to approach the optimal solution by continuously adjusting and optimizing the potential function. In addition, the potential method also has strong generality and flexibility, and can adapt to earthwork allocation problems of different scales and complexities.

[0055] S24. Each matching path corresponds to a specific filling area and a specific excavation area. A specific filling area and a specific excavation area are marked as corresponding areas. The earthwork variance value between the required earthwork volume of each specific filling area and the supplied earthwork volume of the specific excavation area is obtained. The earthwork variance values of all groups are obtained and summed to get the total earthwork variance value. The excavation equipment is matched according to the total earthwork variance value.

[0056] S25. The excavation equipment reserved at the dispatching point is allocated in real time according to the demand. When a group of corresponding areas appears in the same time period, the excavation equipment goes to the excavation area of the corresponding area. When multiple groups of corresponding areas are predicted to appear or no corresponding areas appear at the same time, the excavation equipment conducts earth excavation operations at the dispatching point.

[0057] It is also possible to temporarily determine the corresponding areas according to the on-site construction environment and mark the temporary areas on the preset model, so as to determine new matching paths and remedial plans, with flexible adjustment.

[0058] As described in the above steps S21 - S25, the daily filling volume of each filling area and the daily earth excavation volume of each excavation team in the excavation area are statistically obtained. The plan is no longer fixed, but takes days as the unit. By adjusting the transportation routes and the positions of the excavation teams, it adapts to the work progress of the filling area, with a higher degree of adaptation; based on the daily matching plan, the differences between the preset matching paths are compared to determine the corresponding areas, set up the dispatching point, and use the dispatching point to provide timely support or earthwork for the places where the earthwork supply is insufficient. It is flexible and changeable, and is convenient for adapting to uncertain situations during the construction process.

[0059] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claimed rights.

Claims

1. A construction progress simulation management method based on earthwork deployment, characterized in that: The following steps are involved: Build BIM models based on construction drawings, build GIS terrain models based on terrain image databases, and generate preset models based on BIM models and GIS terrain models; Divide the strata in each excavation area, obtain the unit volume of soil in each stratum and the volume of the soil after compaction in the filling area, and obtain the excavation-filling ratio based on the unit volume and the compacted volume; Obtain the daily filling volume V1 of each filling area and the maximum filling volume V2 required for a single day, count the daily excavation volume V3 of each excavation team in the excavation area, and form a daily matching plan based on V1, V2, and V3; The scheduling points are preset based on the preset model and the daily matching plan, and the scheduling points are used to place the excavation equipment and / or provide earthwork reservation.

2. The construction progress simulation management method based on earthwork deployment according to claim 1 is characterized by: The step of generating a preset model based on the BIM model and the GIS terrain model includes: Obtain construction drawings on site and build a three-dimensional terrain model, i.e., a BIM model, based on the terrain data provided by the construction drawings; Based on remote sensing technology, GPS technology, and field surveys, we obtain terrain data of the construction site, build a terrain image database based on the terrain data, and build a GIS terrain model based on the terrain image database. The information reflected by the GIS terrain model includes: terrain undulation, slope, and elevation. GIS terrain is combined with terrain, geology, and construction plans to optimize the earthwork allocation plan. Generate a preset model based on the BIM model and GIS terrain model.

3. The construction progress simulation management method based on earthwork deployment according to claim 2 is characterized by: The step of obtaining the cut-fill ratio according to the unit volume and the compacted volume comprises: Determine the project scope, cut-fill boundary, cut area, fill area and site elevation according to the preset model, and determine the topographic survey control points; Exploration points are arranged on the original site of each excavation area, and holes are drilled at the exploration points to take out the soil and divide the strata. The unit volume of soil in each soil layer is obtained and marked as the volume before compaction. The volume of compacted soil is obtained after the filling pressure of the filling area acts on the unit volume of soil before compaction. The volume of compacted soil is marked as the volume after compaction. The excavation-filling ratio is obtained based on the volume before compaction and the volume after compaction. The cut-fill ratio is used to derive the soil volume required for the cut area from the soil volume required for the fill area.

4. The construction progress simulation management method based on earthwork deployment according to claim 1 is characterized by: The step of forming a daily matching plan based on V1, V2, and V3 includes: There are multiple excavation areas and filling areas. The daily filling volume V1 required for all filling areas is counted, and the maximum filling volume V2 required for a single day is obtained by comparison; Each excavation area is equipped with an excavation team. Each excavation team has different excavation capabilities. The daily excavation volume V3 of each excavation team in the excavation area is counted; A daily matching scheme is formed according to V1, V2 and V3, and the filling area and the excavation area are adapted based on the matching scheme, and the matching scheme uses day as the unit time.

5. The construction progress simulation management method based on earthwork deployment according to claim 1 is characterized by: The step of presetting the scheduling point based on the preset model and the daily matching plan includes: Determine the cut and fill area, transportation method and preset matching path based on the preset model; Determine the preset matching path of the filling area and the excavation area according to the minimum element method, and detect and determine the final preset matching path through the hypothetical distance method and potential method; Compare the differences of preset matching paths based on the daily matching plan, determine the preset matching paths that produce the differences, lock the corresponding filling areas and excavation areas, mark them as specific filling areas and specific excavation areas, determine the center positions of all specific excavation areas based on the preset model, and preset scheduling points at the center positions. The scheduling points are used to place excavation equipment and / or provide earthwork reservations.

6. The construction progress simulation management method based on earthwork deployment according to claim 5 is characterized by: Each matching path corresponds to a set of specific filling areas and specific excavation areas. A set of specific filling areas and specific excavation areas are marked as corresponding areas. The earthwork difference between the required amount of soil in each set of specific filling areas and the supplied amount of soil in the specific excavation areas is obtained. The earthwork difference values ​​of all groups are obtained and summed up to get the total earthwork difference value, and the excavation equipment is matched according to the total earthwork difference value.

7. The construction progress simulation management method based on earthwork deployment according to claim 5 is characterized by: The excavation equipment reserved at the dispatching point is deployed in real time according to demand. When a group of corresponding areas appear in the same time period, the excavation equipment goes to the excavation area of ​​the corresponding area. When multiple groups of corresponding areas are predicted to appear at the same time or no corresponding area appears, the excavation equipment performs excavation operations at the dispatching point.

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