A seabed immersed tube tunnel foundation trench soil information output method

Abstract

The method comprises the following steps: S1, establishing a three-dimensional base trench geological model; S2, establishing a two-dimensional base trench mileage pile number line; S3, matching and calculating the starting and ending mileage pile numbers of a calculation area; S4, inputting boundary condition parameters of the calculation area; and S5, one-key table output of soil information of the calculation area. The method is based on the three-dimensional base trench geological model and combined with a soil classification calculation method, and under the condition of ensuring calculation accuracy, one-key table output of information of various types of soil in a local area of the base trench is realized, the calculation accuracy and efficiency are significantly improved compared with a traditional section method, important quantitative basis is provided for selection of construction equipment and process of excavation of the local area of the base trench, the effect is very obvious, and the method is also applicable to rapid calculation and output of soil information of linear engineering such as a base trench, a waterway, a highway, a railway, a tunnel and urban rail transit, and is widely applied.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of BIM three-dimensional geological modeling and dredging engineering, and particularly relates to a seabed immersed tunnel foundation trench soil information output method BACKGROUND

[0002] Dredging engineering is mostly operated on seabed or riverbed, and underwater soil conditions are difficult to find out and dynamically change, which brings great difficulties to dredging engineering survey, design and construction. In the prior art, based on isolated geological information such as engineering geological longitudinal and transverse section maps and engineering geological columnar maps, traditional methods such as section method cannot quantitatively and visually analyze the geological conditions of the foundation trench, which has an adverse effect on the foundation trench excavation construction. Since the seabed foundation trench needs to be excavated according to the principles of stratification, strip and section, the local area excavation is completed first, and then the overall excavation is completed, so the geological conditions of the local area of the foundation trench need to be analyzed during the foundation trench excavation process, and the process and equipment need to be selected. At present, a three-dimensional foundation trench geological model needs to cut the geological grid bodies on the boundaries of the local area of the foundation trench, manually count the soil information of the local area of the foundation trench, and analyze the geology of the area. The process is complex, the precision is low, and the workload is large. At present, there is no mature and reliable method for quickly calculating the soil classification of dredging engineering, and the section method is often used to calculate the dredging engineering quantity, which has the disadvantages of low precision, long time and extremely complex calculation process. In view of the above problems, a solution is urgently needed. SUMMARY

[0003] The purpose of the application is to provide a seabed immersed tunnel foundation trench soil information output method based on a three-dimensional foundation trench geological model, combined with a soil classification calculation method, and using the combination of the model and the tool to solve the problems of the seabed immersed tunnel foundation trench soil information that cannot be quantitatively and visually analyzed, the complex analysis process and the low precision.

[0004] The seabed immersed tunnel foundation trench soil information output method provided by the application comprises the following steps:

[0005] S1, establishing a three-dimensional foundation trench geological model;

[0006] S2, establishing a two-dimensional foundation trench mileage pile number line;

[0007] S3, matching and calculating the start and end mileage pile numbers of the calculation area;

[0008] S4, inputting boundary condition parameters of the calculation area;

[0009] S5, one-key table outputting the soil information of the calculation area.

[0010] The S1 step comprises: establishing a three-dimensional geological modeling system, which comprises: a model file module for storing a three-dimensional foundation trench geological model; and an information database module for storing project information, personnel information, survey information, and original data input information corresponding to the three-dimensional foundation trench geological model, the three-dimensional foundation trench geological model comprising three-dimensional geometric model information and three-dimensional geometric model information corresponding geological attribute information, the three-dimensional geometric model information being divided into point model information, line model information, surface model information, volume model information, and grid model information.

[0011] The S1 step specifically further comprises the following steps:

[0012] S11: generating a topographic surface using pre-dredging seabed multi-beam bathymetric data to generate a topographic surface model in the three-dimensional foundation trench geological model;

[0013] S12: establishing foundation trench geological layer interfaces using engineering geological longitudinal and transverse section maps and engineering geological boreholes, and establishing a foundation trench design interface using foundation trench construction plan and construction transverse section maps to generate a geological interface model in the three-dimensional foundation trench geological model;

[0014] S13: cutting entities in the foundation trench engineering area using the foundation trench design interface, the pre-dredging seabed topographic surface, and the foundation trench geological layer interfaces to generate the three-dimensional foundation trench geological model.

[0015] The S2 step comprises a milestone number adding module for data interaction with the three-dimensional geological modeling system, the two-dimensional foundation trench centerline being used as an axis to identify a starting milestone number of the two-dimensional foundation trench centerline to generate a two-dimensional foundation trench milestone number line, the two-dimensional foundation trench milestone number line being used as an axis to identify a starting milestone number and a terminal milestone number of a foundation trench calculation area;

[0016] The milestone number adding module comprises:

[0017] A reference module for referencing the two-dimensional foundation trench centerline to the three-dimensional foundation trench geological model and conforming to actual coordinates;

[0018] A picking-up module for picking up the two-dimensional foundation trench centerline and the two-dimensional foundation trench milestone number line;

[0019] A generating module for adding the starting milestone number to the two-dimensional foundation trench milestone number line at a correct position to generate the two-dimensional foundation trench milestone number line, and adding the starting milestone number and the terminal milestone number of the foundation trench calculation area to the two-dimensional foundation trench milestone number line at a correct position;

[0020] A parameter module for inputting boundary condition parameters of the foundation trench calculation area;

[0021] The calculation module is used for calculating the soil information of each soil in the three-dimensional foundation trench geological model in the calculation area, and the soil information includes the pile number interval, the elevation interval, the corresponding pile number, the lateral offset interval, the corresponding pile number, the maximum thickness, and the corresponding pile number of the distribution of each type of soil in the foundation trench area, and the engineering quantity.

[0022] The two-dimensional foundation trench mileage pile number line includes spatial node coordinates, mileage pile number identification, line type information, and control point information.

[0023] The S3 step includes adding the start pile number and the end pile number of the foundation trench calculation area at the correct position on the two-dimensional foundation trench mileage pile number line, taking the two-dimensional foundation trench mileage pile number line as an axis to identify the start pile number and the end pile number of the foundation trench calculation area, determining the start and end mileage pile numbers of the foundation trench calculation area, and generating the start and end mileage pile numbers of the calculation area on the two-dimensional foundation trench mileage pile number line by using the pile number positioning and query tool and inputting the style, position, and size parameters.

[0024] The S4 step includes inputting the boundary condition parameters of the foundation trench calculation area by using the parameter module, specifically including selecting the two-dimensional foundation trench mileage pile number line as a trajectory line, selecting the start pile number of the calculation area as the start mileage, selecting the end pile number as the end mileage, inputting the elevation interval and the lateral distance interval of the calculation area, and generating the calculation envelope of the foundation trench calculation area.

[0025] The calculation module includes a statistical module for traversing each layer of the three-dimensional foundation trench geological model, and storing the soil information; an analysis module for analyzing the data in the calculation area of the three-dimensional foundation trench geological model and outputting the analysis result; and an export module for writing the analysis result into an Excel template and exporting an Excel table file.

[0026] The calculation step of the mileage pile number adding module is:

[0027] 1. Obtain the two-dimensional foundation trench center line model data.

[0028] 2. Confirm the mileage pile number information to be identified.

[0029] 3. Input the start pile number of the two-dimensional foundation trench center line, generate the corresponding foundation trench start mileage pile number identification on the two-dimensional foundation trench center line marking model, and generate the two-dimensional foundation trench mileage pile number line; input the start pile number and the end pile number of the foundation trench calculation area, and generate the corresponding start pile number and the end pile number of the foundation trench calculation area on the two-dimensional foundation trench mileage pile number line.

[0030] The statistical step of the statistical module is:

[0031] 1. Statistics input the pile number interval, elevation interval, left and right lateral offset interval;

[0032] 2. Statistics calculate the soil information of each soil in the three-dimensional foundation trench geological model in the calculation area.

[0033] The S5 step includes: using the above S1-S4 steps, outputting the information of each type of soil in the envelope formed in the S4 step by one-key table, specifically including: setting the soil information Excel table output position as the desktop, the name as "soil information calculation output table", opening the generated soil information Excel table, and checking the information of each type of soil in the calculation area of the foundation trench.

[0034] The seabed immersed tunnel foundation trench soil information output method provided by the application is based on BIM technology, uses engineering geological longitudinal and lateral section graphs and engineering geological columnar graphs to establish a three-dimensional foundation trench geological model, and realizes one-key table output of the information of each type of soil between any elevation, pile number, left and right lateral offset and vertical foundation trench center line left and right lateral offset distance of the foundation trench based on the three-dimensional foundation trench geological model, which significantly improves the calculation efficiency and accuracy compared with the method of cutting the local area geological grid body of the foundation trench and manually counting the soil information, and realizes the overall three-dimensional qualitative and quantitative and visual analysis of the geological distribution of the foundation trench, thereby providing important quantitative basis for the foundation trench excavation cost prediction and control and the selection of excavation equipment and process. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a seabed immersed tunnel foundation trench soil information output method flow chart provided by the application;

[0036] Figure 2a It is a three-dimensional foundation trench geological model plan view in the seabed immersed tunnel foundation trench soil information output method provided by the application;

[0037] Figure 2b It is a three-dimensional foundation trench geological model bottom view in the seabed immersed tunnel foundation trench soil information output method provided by the application;

[0038] Figure 2c It is a three-dimensional foundation trench geological model and construction plan view in the seabed immersed tunnel foundation trench soil information output method provided by the application;

[0039] Figure 2d It is a three-dimensional foundation trench geological model typical section view in the seabed immersed tunnel foundation trench soil information output method provided by the application;

[0040] Figure 3 It is a two-dimensional foundation trench mileage pile number line schematic view in the seabed immersed tunnel foundation trench soil information output method provided by the application;

[0041] Figure 4 Fig. 1 is a schematic diagram of assigning the start and end pile numbers of the calculation area of the foundation trench to the two-dimensional foundation trench mileage pile number line in the embodiment of the present application;

[0042] Figure 5 Fig. 2 is a schematic diagram of the three-dimensional foundation trench geological model and the two-dimensional foundation trench mileage pile number line in the embodiment of the present application;

[0043] Figure 6 Fig. 3 is a calculation envelope of the calculation area of the foundation trench corresponding to the boundary condition parameters input in the rapid calculation tool for soil classification in the embodiment of the present application;

[0044] Figure 7 Fig. 4 is a soil information calculation output table of the calculation area of the foundation trench generated in the embodiment of the present application, which contains the soil information as shown in the figure; DETAILED DESCRIPTION

[0045] The technical solutions of the present application are described below in combination with the accompanying drawings, so as to be clear and complete.

[0046] As shown in Figure 1 , the technical solutions of the present application are as follows:

[0047] S1, establishing a three-dimensional foundation trench geological model;

[0048] S2, establishing a two-dimensional foundation trench mileage pile number line;

[0049] S3, matching the start and end mileage pile numbers of the calculation area;

[0050] S4, inputting the boundary condition parameters of the calculation area;

[0051] S5, one-key table output of the soil information of the calculation area.

[0052] The S1 step includes establishing a three-dimensional geological modeling system, which includes: a model file module for storing the three-dimensional foundation trench geological model; an information database module for storing the project information, personnel information, survey information, and original data input information corresponding to the three-dimensional foundation trench geological model. The three-dimensional foundation trench geological model includes three-dimensional geometric model information and three-dimensional geometric model information corresponding geological attribute information. The three-dimensional geometric model information is divided into point model information, line model information, surface model information, volume model information, and grid model information.

[0053] The S1 step further includes:

[0054] S11: generating a terrain surface using pre-dredging seabed multi-beam bathymetric data: importing a bathymetric data file in TXT format to generate a pre-dredging seabed terrain surface; using a multi-beam sounding system, which generally consists of a multi-beam sounder, a positioning system, an attitude sensor, other auxiliary sensors, a data acquisition system, and a data processing system. Its working principle is to use field software for field navigation and data collection, receive real-time differential signals from the base station of the sea measurement platform, realize three-dimensional underwater terrain measurement of the multi-beam system with RTK, and automatically collect and synchronously record RTK real-time positioning data, underwater terrain data, compass data, etc. in the computer; a specific embodiment takes a seabed immersed tube tunnel foundation trench excavation project as an example, which is 5035m long, with a maximum width of 400m and a maximum excavation thickness of 30m, and contains 23 types of soil such as silt, sand, clay, and rock. The three-dimensional foundation trench center line is a three-dimensional space curve, and the foundation trench is divided into 32 pipe sections according to the design file. According to the principle of segmentation, strip, and layer, the foundation trench excavation is completed by pipe section.

[0055] S12: establishing the interfaces of each geological layer of the foundation trench using three engineering geological longitudinal section maps, fifteen engineering geological transverse section maps, and 204 engineering geological drill holes; establishing the design interface of the foundation trench using the foundation trench construction plan and the construction transverse section map;

[0056] S13: cutting the entity in the foundation trench engineering area from top to bottom using the pre-dredging seabed terrain surface, the interfaces of each geological layer of the foundation trench, and the design interface of the foundation trench to generate a three-dimensional foundation trench geological model, prompting information in the window, data related parameters, and starting to calculate the volume model; confirming or exiting;

[0057] In step S2, a milestone number adding module for data interaction with the three-dimensional geological modeling system is included, which comprises: a reference module for referencing the two-dimensional foundation trench center line to the three-dimensional foundation trench geological model and being consistent with the actual coordinates; a picking module for picking the two-dimensional foundation trench center line; picking the two-dimensional foundation trench milestone number line; a generating module for adding a starting milestone number at the correct position on the two-dimensional foundation trench milestone number line to generate a two-dimensional foundation trench milestone number line.

[0058] The two-dimensional foundation trench milestone number line includes: spatial node coordinates, milestone number identification, line type information, and control point information. The milestone number identification of the two-dimensional foundation trench milestone number line includes: identification line length, identification line spatial position, and identification milestone number string identification method.

[0059] The identification length unit.

[0060] Step S2 includes: a, referencing and copying the two-dimensional foundation trench center line;

[0061] b. start a generation of a milestone marker command, input parameters, match a two-dimensional foundation trench center line starting milestone marker, and generate a two-dimensional foundation trench mileage marker line;

[0062] As shown in the specific Figures 2a-2d As shown in the specific

[0063] S21. In the three-dimensional foundation trench geological model, reference is made to the foundation trench construction general plan, the two-dimensional foundation trench center line is copied, the coordinates are kept consistent, and the reference foundation trench construction general plan is closed;

[0064] S22. The starting stake number K7+030.000 of the foundation trench is assigned to the two-dimensional foundation trench center line, and the two-dimensional foundation trench mileage marker line is generated.

[0065] As shown in the specific Figure 3 As shown in the specific

[0066] S31. It is determined that the starting stake number of the soil information foundation trench calculation area to be output is K7+645.000, and the ending stake number is K7+820.00.

[0067] S32. The stake number positioning and query tool is used to set the size of the marked text, the horizontal offset of the text, and the vertical offset of the text to be 50, mark the starting stake number K7+645.000 and the ending stake number K7+820.000 of the foundation trench calculation area, and display them on the two-dimensional foundation trench mileage marker line.

[0068] The mileage marker adding module further includes a parameter module and a calculation module.

[0069] As shown in the specific Figure 4 As shown in the specific

[0070] S41. Start the soil classification rapid calculation tool dialog window.

[0071] S42. Select the two-dimensional foundation trench mileage marker line as the track line, input the starting stake number K7+645.000 and the ending stake number K7+820.000 of the calculation area, the top elevation is 0m, the bottom elevation is -30m, the left offset is 250m, and the right offset is 250m. As shown in the specific Figure 5 As shown in the specific Figure 6 The calculation module is used to statistically calculate the soil information of each soil of the three-dimensional foundation trench geological model in the calculation area, and the soil information includes: the stake number interval, the elevation interval, the corresponding stake number, the lateral offset interval, the maximum thickness, and the corresponding stake number of the distribution of each type of soil in the foundation trench area, and the engineering quantity.

[0072] The calculation module comprises: a statistical module for traversing each layer of the three-dimensional foundation trench geological model, and counting and storing the soil information; and an analysis module for analyzing and outputting the data in the calculation region of the three-dimensional foundation trench geological model.

[0073] The calculation module of the milestone number adding module comprises the following steps:

[0074] 1: Obtain the data of the two-dimensional foundation trench center line model;

[0075] 2: Confirm the milestone number information to be identified;

[0076] 3: Input the starting milestone number of the two-dimensional foundation trench center line, generate the corresponding starting milestone number mark of the foundation trench on the two-dimensional foundation trench center line marking model, and generate the two-dimensional foundation trench milestone number line; input the starting milestone number and the ending milestone number of the calculation region of the foundation trench, and generate the corresponding starting milestone number and ending milestone number of the calculation region of the foundation trench on the two-dimensional foundation trench milestone number line.

[0077] The statistical module comprises the following steps:

[0078] 1: Count the input milestone number interval, elevation interval, and left and right lateral offset interval;

[0079] 2: Count the soil information of each soil in the three-dimensional foundation trench geological model in the calculation region.

[0080] The body, i.e. one-key table, outputs the information of each type of soil in the envelope body.

[0081] The step S5 comprises the following steps:

[0082] S51: Click to start calculation;

[0083] S52: Set the Excel table output position of the soil information to the desktop, and set the name as "soil information calculation output table";

[0084] S53: Open the generated soil information Excel table, and view the information of each type of soil in the calculation region of the foundation trench, as shown in Figure 7 .

[0085] The seabed immersed tube tunnel foundation trench soil information output method provided by the application utilizes a three-dimensional foundation trench modeling system, establishes a three-dimensional foundation trench geological model through a foundation trench construction plan, an engineering geological longitudinal and transverse section, a seabed topography surface before dredging, a foundation trench design interface, and realizes three-dimensional qualitative and quantitative and visual analysis of the geological distribution of the foundation trench. On the basis of the three-dimensional foundation trench geological model, a two-dimensional foundation trench mileage pile number line is established, the starting and ending mileage pile numbers of the matching calculation area are calculated, and the boundary condition parameters of the calculation area are input, a soil classification rapid calculation tool is developed through the above steps, and thus one-key table output of the information of various types of soil in the local calculation area of the foundation trench is realized, such as output of the information of various types of soil between any elevation, pile number, left-right transverse offset and vertical foundation trench center line left-right transverse offset distance of the foundation trench, the calculation efficiency and accuracy are significantly improved, the overall three-dimensional qualitative and quantitative and visual analysis of the geological distribution of the foundation trench is realized, and important quantitative basis is provided for foundation trench excavation cost prediction and control and selection of excavation equipment and process.

Claims

1. A seabed immersed tube tunnel foundation trench soil information output method, characterized by, The method comprises the following steps: S1, establishing a three-dimensional foundation trench geological model; S2, establishing a two-dimensional foundation trench mileage pile number line; S3, matching and calculating the starting and ending mileage pile numbers of the calculation area; S4, inputting boundary condition parameters of the calculation area; S5, one-key table outputting soil information of the calculation area; The S1 step comprises: establishing a three-dimensional geological modeling system, which comprises: a model file module for storing the three-dimensional foundation trench geological model; and an information database module for storing project information, personnel information, survey information, and original data input information corresponding to the three-dimensional foundation trench geological model, wherein the three-dimensional foundation trench geological model comprises three-dimensional geometric model information and three-dimensional geometric model information corresponding geological attribute information, and the three-dimensional geometric model information is divided into point model information, line model information, surface model information, volume model information, and grid model information; The S2 step comprises a mileage pile number adding module for data interaction with the three-dimensional geological modeling system, taking the two-dimensional foundation trench center line as an axis, identifying the starting pile number of the two-dimensional foundation trench center line, and generating a two-dimensional foundation trench mileage pile number line, taking the two-dimensional foundation trench mileage pile number line as an axis, and identifying the starting pile number and the ending pile number of the foundation trench calculation area; The mileage pile number adding module comprises: a reference module for referencing the two-dimensional foundation trench center line to the three-dimensional foundation trench geological model and being consistent with the actual coordinates; a picking module for picking the two-dimensional foundation trench center line and the two-dimensional foundation trench mileage pile number line; a generation module for adding the starting pile number to the two-dimensional foundation trench mileage pile number line at a correct position and generating the two-dimensional foundation trench mileage pile number line, and adding the starting pile number and the ending pile number of the foundation trench calculation area to the two-dimensional foundation trench mileage pile number line at a correct position; a parameter module for inputting boundary condition parameters of the foundation trench calculation area; a calculation module for statistically calculating soil information of each soil type in the three-dimensional foundation trench geological model in the calculation area, wherein the soil information comprises: a pile number interval, an elevation interval, corresponding pile numbers, a lateral offset interval, corresponding pile numbers, a maximum thickness, and corresponding pile numbers of the distribution of each soil type in the foundation trench area, and an engineering quantity; The two-dimensional foundation trench mileage pile number line comprises: space node coordinates, mileage pile number identification, line type information, and control point information, and the mileage pile number identification of the two-dimensional foundation trench mileage pile number line comprises: identification line length, identification line space position, identification mileage pile number string identification mode, and identification length unit.

2. The method of claim 1, wherein the method comprises: The S1 specifically further comprises the following steps: S11, generating a topographic surface by using pre-dredging seabed multi-beam water depth measurement data, and generating a topographic surface model in the three-dimensional foundation trench geological model; S12, establishing each geological layer interface of the foundation trench by using engineering geological longitudinal and lateral section maps and engineering geological drill holes, and establishing a foundation trench design interface by using a foundation trench construction plan and a construction cross section map, and generating a geological interface model in the three-dimensional foundation trench geological model; S13, cutting entities in the foundation trench engineering area by using the foundation trench design interface, the pre-dredging seabed topographic surface, and each geological layer interface of the foundation trench, and generating the three-dimensional foundation trench geological model.

3. The method of claim 1, wherein the method comprises: The S3 step comprises: adding the start and end stake numbers of the base trench calculation area at the correct position on the two-dimensional base trench mileage stake line, taking the two-dimensional base trench mileage stake line as an axis, identifying the start and end stake numbers of the base trench calculation area, determining the start and end mileage stakes of the base trench calculation area, inputting the style, position and size parameters by using the stake positioning and query tool, and generating the start and end mileage stakes of the calculation area on the two-dimensional base trench mileage stake line.

4. The method of claim 1, wherein the method comprises: The S4 step comprises: inputting the boundary condition parameters of the base trench calculation area by using the parameter module, specifically comprising: selecting the two-dimensional base trench mileage stake line as a track line, selecting the start stake number of the calculation area as a start mileage, selecting the end stake number as an end mileage, inputting the elevation interval and lateral distance interval of the calculation area, and generating the calculation envelope of the base trench calculation area.

5. The method of claim 1, wherein the method is characterized by: The calculation module comprises: a statistical module for traversing each layer of the three-dimensional base trench geological model, and storing the soil information; an analysis module for analyzing the data in the calculation area of the three-dimensional base trench geological model and outputting the analysis result; and an export module for writing the analysis result into an Excel template and exporting an Excel table file.

6. The method of claim 1, wherein, The calculation step of the mileage stake adding module is:

1. Obtain the two-dimensional base trench center line model data; 2. Confirm the mileage stake information to be identified; 3. Input the start stake number of the two-dimensional base trench center line, generate the corresponding base trench start mileage stake identification on the two-dimensional base trench center line marking model, and generate the two-dimensional base trench mileage stake line; input the start and end stake numbers of the base trench calculation area, and generate the corresponding start and end stake numbers of the base trench calculation area on the two-dimensional base trench mileage stake line.

7. The method for quickly calculating and outputting soil information of a complex geological seabed immersed tube tunnel foundation trench according to claim 5, characterized in that, The statistical step of the statistical module is:

1. Statistically input the stake number interval, elevation interval, and left and right lateral offset interval; 2. Statistically input the soil information of each soil in the three-dimensional base trench geological model in the calculation area.

8. The method of claim 1, wherein the method is characterized by: The S5 step comprises: using the above S1-S4 steps to perform one-key table output of the information of each type of soil in the envelope by the calculation envelope formed in the S4 step, specifically comprising: setting the Excel table output position of the soil information as the desktop, and the name as "soil information calculation output table", opening the generated soil information Excel table, and checking the information of each type of soil in the base trench calculation area.

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