CN114969912A - Method and system for analyzing cavern excavation engineering - Google Patents
Method and system for analyzing cavern excavation engineering Download PDFInfo
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Abstract
The invention provides a method and a system for analyzing a cavern excavation project, wherein the cavern is divided into K project sections in the length direction of the cavern, and K is more than or equal to 2; the method is characterized in that: the method for analyzing the grotto excavation engineering comprises the following steps: step 1: after the cavern excavation engineering construction and before the lining engineering construction, determining the actual three-dimensional position coordinates of the inner wall of the whole cavern, and obtaining K local cavern three-dimensional mapping models respectively corresponding to K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern; step 2: and (3) comparing the local cavern three-dimensional mapping model corresponding to the engineering section obtained in the step (1) with the local cavern three-dimensional design model corresponding to the engineering section in the same coordinate system in a simulation space, so as to obtain a three-dimensional model of a first characteristic region in each engineering section and a three-dimensional model of a second characteristic region in each engineering section.
Description
Technical Field
The invention relates to a method and a system for analyzing a cavern excavation project, and belongs to the technical field of underground cavern and tunnel excavation projects.
Background
In the process of large-scale hydropower and water conservancy engineering construction, underground caverns, tunnel excavation and filling engineering are huge, and overexcavation and underexcavation of the caverns are inevitable due to reasons such as site geology, construction technology and the like. Generally, overbreak refers to an actual excavation profile that is larger than a design excavation profile, whereas under excavation refers to an actual excavation profile that is smaller than a design excavation profile. For the over-excavation, great hidden danger can be caused to the safe construction of the cavern, and the engineering quantity of supporting and lining concrete can be increased; the engineering quality can be influenced for underexcavation, the thickness of lining concrete is reduced, and the overall safety of the engineering is influenced.
Often combine two-dimentional design drawing among the traditional engineering construction process, measure the cavern through lofting measuring mode and surpass under cut and compare, manual intervention and later stage calculation work load are great, and accurate degree is lower, can't the accurate super under cut region of every engineering and the engineering volume condition of mastering, and in accounting excavation measurement, define the overexcavation ration of digging with the hole to the cubic metre of earth and stone and easily produce the dispute. In addition, the construction site is usually managed by adopting paper forms, the auditing process is lagged, and the construction unit has the problems of one over-excavation and multiple reports, so that the overall settlement of the project is influenced.
Disclosure of Invention
The invention provides a method and a system for analyzing a cavern excavation project, aiming at the problems that the measurement precision of over excavation and under excavation is low and the excavation measurement is easy to dispute during the analysis of the existing cavern excavation project.
In order to solve the technical problems, the invention adopts the technical scheme that: a cavern excavation engineering analysis method is characterized in that a cavern is divided into K engineering sections in the length direction of the cavern, wherein K is more than or equal to 1; the method for analyzing the cavern excavation engineering comprises the following steps:
step 1: after the cavern excavation engineering construction and before the lining engineering construction, determining the actual three-dimensional position coordinates of the inner wall of the whole cavern, and obtaining K local cavern three-dimensional mapping models respectively corresponding to K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern;
step 2: for each engineering section, comparing the local cavern three-dimensional mapping model corresponding to the engineering section with the local cavern three-dimensional design model corresponding to the engineering section to obtain a three-dimensional model of a first characteristic region in the engineering section and a three-dimensional model of a second characteristic region in the engineering section, and obtaining engineering quantity corresponding to the first characteristic region and engineering quantity corresponding to the second characteristic region in the engineering section according to the three-dimensional model of the first characteristic region and the three-dimensional model of the second characteristic region in each engineering section;
wherein the first characteristic region is a region which is not covered by the corresponding local cavern three-dimensional design model in the local cavern three-dimensional mapping model; the second characteristic region is a region which is not covered by the corresponding local cavern three-dimensional mapping model in the local cavern three-dimensional design model.
According to the method, the actual three-dimensional position coordinates of the inner wall of the cavern in each engineering section are determined so as to obtain the local cavern three-dimensional mapping model of the cavern in each engineering section, so that the cavern excavation condition in each engineering section after cavern excavation engineering construction and before lining engineering construction can be determined, and after the local cavern three-dimensional mapping model is compared with the local cavern three-dimensional design model, the three-dimensional model of the first characteristic region (the three-dimensional model of the over-excavated region) in each engineering section and the three-dimensional model of the second characteristic region (the three-dimensional model of the under-excavated region) in each engineering section can be obtained, so that the conditions of the over-excavated region and the under-excavated region of the engineering in each engineering section can be visually displayed, and reference is provided for subsequent engineering. For each engineering section, according to the three-dimensional model of the first characteristic region and the three-dimensional model of the second characteristic region corresponding to the engineering section, the section local inspection of the models can be carried out, the specific excavation condition of the engineering section can be known, and for the over-excavation and under-excavation serious regions, the site correction can be guided according to the corresponding three-dimensional models.
According to the invention, the engineering quantities respectively corresponding to excavation and underexcavation can be calculated through the arrangement. Compared with the mode that the excavation and underexcavation quantities of all engineering sections are determined and manually accounted by combining two-dimensional design drawings with actual excavation conditions in the prior art, the method for calculating the engineering quantities by using the three-dimensional model is more accurate and higher in accuracy, and avoids the problem that disputes are easily generated in excavation measurement as much as possible.
In the above technical solution, K is greater than or equal to 2, and the step 2 is followed by:
and step 3: and combining the three-dimensional models of the first characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the first characteristic regions in the cavern, and calculating corresponding engineering quantities.
And combining the three-dimensional models of the second characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the second characteristic regions in the cavern, and calculating corresponding engineering quantities.
In the invention, the integral three-dimensional model corresponding to all the first characteristic areas in the cavern is the integral model of the over-excavated area of the whole cavern, and the integral three-dimensional model corresponding to all the second characteristic areas in the cavern is the integral model of the under-excavated area of the whole cavern. According to the invention, by obtaining the integral three-dimensional model, the deviation between the actual engineering quantity and the design engineering quantity change of the engineering global area can be calculated, so that data support can be provided for the settlement of the engineering total price contract.
In the above technical scheme, in the step 1, a whole cavern three-dimensional mapping model is obtained according to actual three-dimensional position coordinates of the inner wall of the whole cavern, and the whole cavern three-dimensional mapping model is split according to the range of each engineering section, so that K local cavern three-dimensional mapping models respectively corresponding to the K engineering sections are obtained.
According to the technical scheme, the cavern is divided into the cavern sections with the same length along the length direction of the cavern, the three-dimensional imaging equipment is respectively fixed at the preset position of each cavern section, the inner wall of the cavern of each cavern section is scanned, the scanning results of the inner walls of the caverns of each cavern section are mutually spliced, and therefore the actual three-dimensional position of the whole cavern inner wall is determined.
According to the invention, through the arrangement, the three-dimensional imaging equipment scans the inner wall of the cavern in each sub-engineering section, and after scanning, the scanning results are spliced, so that when the length of the cavern is longer, the scanning can be realized in a mode that each section is scanned respectively, namely, the scanning of the whole cavern is not required to be completed at one time.
According to the technical scheme, the scanning points obtained by the three-dimensional imaging equipment are thinned according to the point distance requirement of the three-dimensional mapping model modeling on the adjacent scanning points, and the three-dimensional mapping model of the local cavern in the engineering section is obtained according to the data of the thinned scanning points.
Applicants have found that the data volume of the scan points is large, but the computer processing power is limited, making modeling time-consuming and lengthy. Therefore, under the condition that the three-dimensional model modeling of the first characteristic region and the second characteristic region is not influenced, the spatial distance thinning method is adopted to properly thin data, so that the modeling time is shortened, and the efficiency is improved.
According to the technical scheme, the designed lining thickness is determined according to design parameters and the geological surrounding rock condition of the environment where the cavern is located, the three-dimensional design model of the cavern is obtained according to cavern surveying and mapping data and the designed lining thickness, the whole three-dimensional design model of the cavern is split according to the range of each engineering section, and therefore K local three-dimensional design models of the cavern corresponding to the K engineering sections are obtained.
According to the invention, the whole cavern three-dimensional design model is established firstly, and then the model is split according to the engineering sections, so that the processing efficiency of the scheme is higher compared with the modeling of the design model of each engineering section.
In the above technical solution, in the step 2, the local cavern three-dimensional mapping model and the corresponding local cavern three-dimensional design model are subjected to boolean logic operation to compare the two models, so as to obtain a three-dimensional model of the first characteristic region in each engineering section and a three-dimensional model of the second characteristic region in each engineering section.
In the invention, the two models are compared by performing Boolean logic operation, so that the processing mode is simple, the processing efficiency is high, and the three-dimensional models of the first characteristic region and the second characteristic region are obtained more quickly.
The invention also provides a cavern excavation engineering analysis system, wherein the cavern is divided into K engineering sections in the length direction of the cavern, and K is more than or equal to 2; the cavern excavation engineering analysis system includes:
a three-dimensional imaging device: the method is used for scanning the inner wall of the cavern after the cavern excavation engineering construction and before the lining engineering construction so as to obtain the actual three-dimensional position coordinates of the inner wall of the integral cavern;
a processor to: obtaining K local cavern three-dimensional mapping models respectively corresponding to the K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern; for each engineering section, comparing the local cavern three-dimensional mapping model corresponding to the engineering section with the local cavern three-dimensional design model corresponding to the engineering section to obtain a three-dimensional model of a first characteristic region in the engineering section and a three-dimensional model of a second characteristic region in the engineering section, and obtaining engineering quantity corresponding to the first characteristic region and engineering quantity corresponding to the second characteristic region in the engineering section according to the three-dimensional coordinate model of the first characteristic region and the three-dimensional coordinate model of the second characteristic region in each engineering section;
wherein the first characteristic region is a region which is not covered by the corresponding local cavern three-dimensional design model in the local cavern three-dimensional mapping model; the second characteristic region is a region which is not covered by the corresponding local cavern three-dimensional mapping model in the local cavern three-dimensional design model.
The invention has the advantages and positive effects that: the method can efficiently collect the field construction measurement data after the cavern excavation project, truly restore the three-dimensional image of the cavern on the project site, thereby obtaining the construction project amount, and visually displaying the conditions of the over-excavation region and the under-excavation region of the project through the three-dimensional model of the first characteristic region and the three-dimensional model of the second characteristic region, thereby providing three-dimensional visual reference for the body control and the subsequent project processing of the over-excavation region and the under-excavation region of the project site, and integrally improving the safety and quality control of the project. The invention extracts the engineering quantity data by using the model, can reduce the engineering metering error, avoids the problem that each participating party calculates the overexcavation quantity to be easy to dispute as much as possible, and improves the field communication efficiency.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic flow chart of the analysis method of the cavity excavation project of the present invention;
FIG. 2 is a schematic diagram of modeling model effects of a first feature region and a second feature region according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
The invention provides a cavern excavation engineering analysis method, which divides a cavern into K engineering sections in the length direction of the cavern. When K is 1, the whole cavern is taken as 1 engineering section. When K is more than or equal to 2, the engineering section can be divided according to the pile number of the engineering unit engineering or the minimum engineering settlement unit, so that the engineering section can be segmented flexibly.
The method for analyzing the cavern excavation engineering comprises the following steps:
step 1: after the cavern excavation engineering construction and before the lining engineering construction, determining the actual three-dimensional position coordinates of the inner wall of the whole cavern, and obtaining K local cavern three-dimensional mapping models respectively corresponding to K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern.
In the invention, the cavern model is a model of a space enclosed by the inner wall and the bottom surface of the cavern.
In the step 1, a whole cavern three-dimensional mapping model is obtained according to the actual three-dimensional position coordinates of the inner wall of the whole cavern, and the whole cavern three-dimensional mapping model is split according to the range of each engineering section, so that K local cavern three-dimensional mapping models corresponding to the K engineering sections are obtained.
The cavern is divided into a plurality of cavern sections with the same length along the length direction of the cavern. The three-dimensional imaging equipment is fixed at a preset position of the 1 st cavern section, and the inner wall of the cavern of the 1 st cavern section is scanned; and fixing the three-dimensional imaging equipment at the preset position of the 2 nd cavern section, scanning the inner wall of the cavern of the 2 nd cavern section, and repeating the steps. And splicing the scanning results of the cavern inner walls of all cavern sections, so as to determine the actual three-dimensional position of the integral cavern inner wall.
And (3) according to the point spacing requirement of the three-dimensional mapping model modeling on adjacent scanning points, thinning the scanning points obtained by the three-dimensional imaging equipment, and according to the data of the thinned scanning points, obtaining a local cavern three-dimensional mapping model of the cavern in the engineering section.
Determining the designed lining thickness according to the design parameters and the geological surrounding rock condition of the environment where the cavern is located, obtaining a whole cavern three-dimensional design model according to cavern surveying and mapping data and the designed lining thickness, splitting the whole cavern three-dimensional design model according to the range of each engineering section, and thus obtaining K local cavern three-dimensional design models corresponding to the K engineering sections respectively.
Different geological surrounding rock types can cause different thicknesses of the linings of the caverns, and the shape style and the volume of the cavern model during modeling are influenced, so that design parameters and modeling can be determined only by determining the surrounding rock types. Which design parameters to select, how to build the design model from the design parameters, will be understood by those skilled in the art.
The three-dimensional imaging device can be a three-dimensional laser scanner for acquiring field measurement data of the cavern in sections, the target acquisition precision is 2 mm/50 m, and a cavern excavation point cloud model is generated by using point cloud data.
The three-dimensional imaging device of the invention can comprise a laser scanner, and also can comprise the laser scanner and an internal or external digital camera, and a software control system. The method comprises the steps of utilizing a laser scanner to quickly obtain point cloud data with a continuous area, preprocessing the obtained point cloud data or the point cloud data and image data after the data are obtained, and removing error points and points containing gross errors in original point cloud by applying a filtering algorithm. And identifying and classifying the point cloud data, and geometrically correcting the scanned and obtained image. And splicing and processing the multi-section scanning data to form integral point cloud data of the engineering area. And (3) directly and automatically modeling the entity through a computer to form a point cloud three-dimensional model. Three sets of engineering area metering point cloud models can be formed by scanning and modeling an engineering original ground surface, an earth-rock interface and an excavated cavern surface.
In the invention, three-dimensional point cloud data of a field cavern or tunnel can be acquired by a three-dimensional laser scanner in a subsection (cavern section). According to the cavern or the scene of the tunnel visible range and the three-dimensional laser scanner scanning distance index come the division cavern section, three-dimensional imaging device's scanning range can cover this cavern section on cavern length direction promptly, and can scan the marker (mark) between two cavern sections to make things convenient for the later stage to splice. Every cavern section can set up and be no less than 4 mark targets and distribute in this section region, be fixed with 2 between two adjacent cavern sections and reach 2 above public mark targets, for the needs of the point cloud concatenation, utilize the three-dimensional laser scanner who sets up on the fixed scanning station of every cavern section to scan this section 4 mark targets earlier, gather mark target coordinate data, then scan this section cavern or tunnel data, under the motionless condition of 2 public mark targets, remove three-dimensional laser scanner to next section scanning station, scanning step more than the repetition, complete data acquisition of cavern or tunnel finishes. When each chamber section is scanned, the three-dimensional imaging device fixed on the chamber section is kept still, and 4 targets in the chamber section and 2 common targets between two chamber sections are scanned at one time. Coordinates corresponding to each image in the scanned cavern are unified to the same coordinate system through the relative position relation of the target coordinates and the scanning positions of the target and the cavern, so that the point cloud data can be spliced conveniently.
After splicing, filtering and denoising the point cloud model, importing design software, performing coordinate matching (unified as 2000 national geodetic coordinate system in the example), generating a mapping DEM model, and splitting according to unit engineering;
the method comprises the steps of forming complete point cloud data of a cavern or a tunnel through common target splicing, preprocessing the spliced whole point cloud data, removing noise of the point cloud data to keep effective points and delete ineffective points, further filtering the point cloud data, thinning the point cloud data according to a point interval meeting the requirement of modeling precision, and finally performing point cloud fitting to construct a Mesh model of the cavern or the tunnel. Due to the fact that the point cloud data volume is large, but the processing capacity of a computer is limited, under the condition that modeling is not affected, a spatial distance rarefying method is adopted, and data are properly rarefied. The thinning may utilize existing algorithms. Data of the Mesh model are exported to be an obj format model, model import and reconstruction are carried out by using three-dimensional design software, the model is preprocessed, and a broken surface, a cross surface and an overlapped surface in the surveying and mapping model are optimized (namely, an error part which is not consistent with an actual structure is optimized), namely, a grid surface tool is provided by using the existing software to check the grid surface, triangular grids corresponding to wrong grids are removed, and grid optimization can be realized. Can be implemented using known optimization techniques, as will be appreciated by those skilled in the art.
Model coordinate matching can be carried out on the basis of the same set of coordinate system with the design model, and a cavern DEM surveying model (namely a local cavern three-dimensional surveying model corresponding to the engineering section) is established.
Step 1 a: and establishing a cavern design model, and splitting according to the engineering section. The method specifically comprises the following steps: according to the design parameters and the mapping data, a BIM model outline of the cavern with the precision of LOD300 is established by utilizing three-dimensional design software, and the thickness of the lining of the cavern is set according to the geological surrounding rock condition and the design parameters, so that a 1:1 solid design model of the cavern is obtained.
The establishment of an ideal model (three-dimensional design model) of the cavern is the prior art, and the three-dimensional model can be established by Bentley Microstation design software.
Step 1a may be performed simultaneously with step 1, or may be performed earlier or later than step 1.
Step 2: under the same coordinate system in a simulation space, comparing the local cavern three-dimensional mapping model corresponding to the engineering section obtained in the step 1 with the local cavern three-dimensional design model corresponding to the engineering section, so as to obtain a three-dimensional model of a first characteristic region in each engineering section and a three-dimensional model of a second characteristic region in each engineering section;
the first characteristic region is a covering region of the local cavern three-dimensional mapping model and is an uncovered region of the local cavern three-dimensional design model, and the second characteristic region is an uncovered region of the local cavern three-dimensional mapping model and is a covering region of the local cavern three-dimensional design model.
In the step 2, boolean logic operation is performed on the local cavern three-dimensional mapping model and the corresponding local cavern three-dimensional design model to compare the local cavern three-dimensional mapping model and the corresponding local cavern three-dimensional design model, so that a three-dimensional model of the first characteristic region in each engineering section and a three-dimensional model of the second characteristic region in each engineering section are obtained.
In step 2, the three-dimensional design model of the local cavern can be used as a reference model, the compensation set boolean calculation is carried out on the three-dimensional mapping model unit of the local cavern to obtain an over-excavation region model and an under-excavation region model of each engineering section, and the over-excavation region engineering quantity and the under-excavation region engineering quantity, namely the engineering quantity corresponding to the first characteristic region in each engineering section and the engineering quantity corresponding to the second characteristic region in each engineering section, are automatically obtained by using three-dimensional design software. The corresponding engineering quantities may be obtained from the volume of the three-dimensional model of the first feature region within each engineering section. Similarly, the corresponding engineering quantities may be obtained from the volume of the three-dimensional model of the second feature region within each engineering section.
In a preferred embodiment, K.gtoreq.2.
The engineering section division calculation is mainly used for providing support for the engineering excavation quality, the section of the unit engineering can be locally inspected, and the site modification can be guided to the over-excavation and under-excavation serious areas;
and 3, step 3: and combining the three-dimensional models of the first characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the first characteristic regions in the cavern, and calculating corresponding engineering quantities.
And combining the three-dimensional models of the second characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the second characteristic regions in the cavern, and calculating corresponding engineering quantities.
By obtaining the integral three-dimensional model, the integral engineering quantity calculation and the subsection engineering quantity calculation can be carried out, the deviation of the actual engineering quantity of the engineering global area relative to the designed engineering quantity change is obtained through the integral calculation, and data support is provided for the settlement of the engineering total price contract.
And 4, step 4: and importing the design model, the surveying and mapping model, the overexcavation model and the undermining model into a digital control platform, associating the project attribute, the visa data, the geological identification data and the settlement data, and realizing the digital control of the overexcavation and the undermining of the cavern project based on BIM.
And hooking the model and the measurement visa bill by using a digital engineering control platform, combining electronic form filling and electronic signature approval, auditing the over-short filling data through an online process, and associating the over-short filling data to the corresponding BIM model.
FIG. 1 shows a schematic diagram of the steps of the method of the present invention. FIG. 2 illustrates an over-cut and under-cut three-dimensional model obtained by the method of the present invention in one embodiment.
The results of the design measurement, construction measurement, overbreak measurement and overbreak measurement of the present example obtained from FIG. 2 are shown in Table 1.
TABLE 1 engineering quantity gauge of the embodiment
| Amount of work | Unit of | |
| Surveying and mapping model | 7819 | m 3 |
| Design model | 8422 | m 3 |
| Overbreak area model | 1165 | m 3 |
| Undermining area model | 1768 | m 3 |
The invention also provides a cavern excavation engineering analysis system, wherein the cavern is divided into K engineering sections in the length direction of the cavern, and K is more than or equal to 2; the cavern excavation engineering analysis system includes:
a three-dimensional imaging device: the method is used for scanning the inner wall of the cavern after the cavern excavation engineering construction and before the lining engineering construction, so as to obtain the actual three-dimensional position coordinates of the inner wall of the integral cavern;
a processor to: obtaining K local cavern three-dimensional mapping models respectively corresponding to the K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern; under the same coordinate system in a simulation space, comparing the local cavern three-dimensional mapping model corresponding to the engineering section obtained in the step 1 with the local cavern three-dimensional design model corresponding to the engineering section, so as to obtain a three-dimensional model of a first characteristic region in each engineering section and a three-dimensional model of a second characteristic region in each engineering section;
the first characteristic region is a covering region of the local cavern three-dimensional mapping model and is an uncovered region of the local cavern three-dimensional design model, and the second characteristic region is an uncovered region of the local cavern three-dimensional mapping model and is a covering region of the local cavern three-dimensional design model.
The processor is further configured to: and obtaining the engineering quantity corresponding to the first characteristic region and the engineering quantity corresponding to the second characteristic region in each engineering section according to the three-dimensional coordinate model of the first characteristic region and the three-dimensional coordinate model of the second characteristic region in each engineering section.
According to the invention, through division of cavern construction unit projects, a design model and a surveying and mapping model can be divided into project sections according to pile numbers, the design and surveying and mapping cavern unit project models are respectively established, unit project attributes are given, the design excavation project quantity and the surveying and mapping excavation project quantity of each unit project section are automatically calculated by using three-dimensional design software, and a project quantity comparison list of each unit project is derived. Namely, two models are overlapped through design software, a coordinate system is unified, automatic segmentation is carried out, and the engineering quantity is counted.
The BIM-based three-dimensional forward design is an emerging design means in the engineering design field, the whole process from a draft design stage to an engineering delivery stage is realized through a BIM three-dimensional model, a three-dimensional result is delivered to embody the design intention, the whole design condition of the engineering is visually and finely reflected by using the three-dimensional model, and the contents of engineering quantity, a material table and the like can be accurately obtained by using the model.
The invention fuses the laser point cloud technology and the BIM technology. The integration of project BIM data and project construction and management data is realized by utilizing a digital technology, management data such as metering visa data and overbreak geological visa data are hung on a BIM model, the overbreak and underbreak conditions and settlement conditions of each region are visually displayed, the metering approval process is accelerated, the situations of error reporting and repeated reporting are avoided, and data support is provided for project cost management and control.
The invention can be applied to underground caverns of hydroelectric engineering or hydraulic engineering, analyzes the over-under-excavation condition of the caverns or tunnels, can respectively construct engineering caverns or tunnels by applying BIM technology and laser point cloud technology and construct three-dimensional models, obtains the over-excavation and under-excavation areas of the models by Boolean calculation by using the models obtained by the two methods, and establishes an over-under-excavation model display system by comparing and calculating the engineering quantity.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent. After reading this disclosure, modifications of various equivalent forms of the present invention by those skilled in the art will fall within the scope of the present application, as defined in the appended claims. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Claims (8)
1. A method for analyzing a cavern excavation project is characterized in that the cavern is divided into K project sections in the length direction of the cavern, wherein K is more than or equal to 1; the method is characterized in that: the method for analyzing the cavern excavation engineering comprises the following steps:
step 1: after the cavern excavation engineering construction and before the lining engineering construction, determining the actual three-dimensional position coordinates of the inner wall of the whole cavern, and obtaining K local cavern three-dimensional mapping models respectively corresponding to K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern;
step 2: for each engineering section, comparing the local cavern three-dimensional mapping model corresponding to the engineering section with the local cavern three-dimensional design model corresponding to the engineering section to obtain a three-dimensional model of a first characteristic region in the engineering section and a three-dimensional model of a second characteristic region in the engineering section, and obtaining engineering quantity corresponding to the first characteristic region and engineering quantity corresponding to the second characteristic region in the engineering section according to the three-dimensional model of the first characteristic region and the three-dimensional model of the second characteristic region in each engineering section;
wherein the first characteristic region is a region which is not covered by the corresponding local cavern three-dimensional design model in the local cavern three-dimensional mapping model; the second characteristic region is a region which is not covered by the corresponding local cavern three-dimensional mapping model in the local cavern three-dimensional design model.
2. The analysis method for cavern excavation engineering of claim 1, wherein: k is more than or equal to 2, and the method also comprises the following step after the step 2:
and step 3: combining the three-dimensional models of the first characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the first characteristic regions in the cavern, and calculating corresponding engineering quantities; and combining the three-dimensional models of the second characteristic regions in each engineering section to obtain an integral three-dimensional model corresponding to all the second characteristic regions in the cavern, and calculating corresponding engineering quantities.
3. The analysis method for cavern excavation engineering of claim 1 or 2, wherein: in the step 1, a whole cavern three-dimensional mapping model is obtained according to the actual three-dimensional position coordinates of the inner wall of the whole cavern, and the whole cavern three-dimensional mapping model is split according to the range of each engineering section, so that K local cavern three-dimensional mapping models corresponding to the K engineering sections are obtained.
4. The analysis method for cavern excavation engineering of claim 1 or 2, wherein: dividing the cavern into a plurality of cavern sections with the same length along the length direction of the cavern, fixing the cavern sections at preset positions of the cavern sections respectively by using three-dimensional imaging equipment, scanning the inner wall of the cavern of each cavern section, and splicing the scanning results of the inner walls of the caverns of each cavern section with each other, thereby determining the actual three-dimensional position of the whole cavern inner wall.
5. The analysis method for cavern excavation engineering of claim 4, wherein: and (3) thinning the scanning points obtained by the three-dimensional imaging equipment according to the point spacing requirement of the three-dimensional mapping model modeling on the adjacent scanning points, and obtaining a local cavern three-dimensional mapping model of the cavern in the engineering section according to the data of the thinned scanning points.
6. The analysis method for cavern excavation engineering of claim 1 or 2, wherein: determining the designed lining thickness according to the design parameters and the geological surrounding rock condition of the environment where the cavern is located, obtaining an integral cavern three-dimensional design model according to cavern surveying and mapping data and the designed lining thickness, splitting the integral cavern three-dimensional design model according to the range where each engineering section is located, and thus obtaining K local cavern three-dimensional design models corresponding to the K engineering sections respectively.
7. The analysis method for cavern excavation engineering of claim 1 or 2, wherein: in the step 2, boolean logic operation is performed on the local cavern three-dimensional mapping model and the corresponding local cavern three-dimensional design model to compare the local cavern three-dimensional mapping model and the corresponding local cavern three-dimensional design model, so that a three-dimensional model of the first characteristic region in each engineering section and a three-dimensional model of the second characteristic region in each engineering section are obtained.
8. A cavern excavation engineering analysis system divides a cavern into K engineering sections in the length direction of the cavern, wherein K is more than or equal to 2; it is characterized in that, the cavern excavation engineering analytic system includes:
a three-dimensional imaging device: the method is used for scanning the inner wall of the cavern after the cavern excavation engineering construction and before the lining engineering construction so as to obtain the actual three-dimensional position coordinates of the inner wall of the integral cavern;
a processor to: obtaining K local cavern three-dimensional mapping models respectively corresponding to the K engineering sections according to the actual three-dimensional position coordinates of the inner wall of the whole cavern; for each engineering section, comparing the local cavern three-dimensional mapping model corresponding to the engineering section with the local cavern three-dimensional design model corresponding to the engineering section to obtain a three-dimensional model of a first characteristic region in the engineering section and a three-dimensional model of a second characteristic region in the engineering section, and obtaining engineering quantity corresponding to the first characteristic region and engineering quantity corresponding to the second characteristic region in the engineering section according to the three-dimensional coordinate model of the first characteristic region and the three-dimensional coordinate model of the second characteristic region in each engineering section;
the first characteristic region is a region which is not covered by the corresponding local cavern three-dimensional design model in the local cavern three-dimensional mapping model; the second characteristic region is a region which is not covered by the corresponding local cavern three-dimensional mapping model in the local cavern three-dimensional design model.
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| CN115482648A (en) * | 2022-09-13 | 2022-12-16 | 西安热工研究院有限公司 | Visual intelligent monitoring and early warning method and system for safety of wind power deep foundation pit |
| CN117726306A (en) * | 2024-02-07 | 2024-03-19 | 石家庄羚建工程技术咨询有限公司 | Rapid calculation method for tunnel construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115482648A (en) * | 2022-09-13 | 2022-12-16 | 西安热工研究院有限公司 | Visual intelligent monitoring and early warning method and system for safety of wind power deep foundation pit |
| CN117726306A (en) * | 2024-02-07 | 2024-03-19 | 石家庄羚建工程技术咨询有限公司 | Rapid calculation method for tunnel construction |
| CN117726306B (en) * | 2024-02-07 | 2024-05-07 | 石家庄羚建工程技术咨询有限公司 | Rapid calculation method for tunnel construction |
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