A method for establishing curtain grouting BIM model based on 3DE

Abstract

The present invention relates to the technical field of hydropower engineering modeling. In order to facilitate the establishment of a real curtain grouting BIM model and quickly extract the required information, a method for establishing a curtain grouting BIM model based on 3DE is provided, including: step 1, establishing a basic model; step 2, generating the center surface and curtain grouting holes of each layer of anti-seepage curtain, and adding an identifier to each curtain grouting hole; step 3, performing secondary editing on the curtain grouting holes to generate curtain grouting holes with information, and entering the information corresponding to the curtain grouting holes into the attached specification parameter table; step 4, automatically extracting the curtain grouting hole information as needed. The model information established by the above steps is detailed, fits the actual site, is convenient for engineering information management, and lays the foundation for the subsequent establishment of the curtain grouting engineering BIM4D / 5D model.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower engineering modeling, and in particular to a method for establishing a curtain grouting BIM model based on 3DE. Background Art

[0002] In water conservancy and hydropower projects at home and abroad, curtain grouting, as the main means of anti-seepage treatment of the foundation of hydraulic structures, plays an important role in ensuring the safe water storage, power generation and safe operation of hydraulic structures during the operation period of reservoirs.

[0003] In traditional two-dimensional seepage control design, curtain grouting drawings are mainly expressed in two dimensions, including horizontal cutting drawings, axis expansion cross-section drawings, vertical axis typical longitudinal section drawings, etc. The results are not clear and intuitive, and the specific spatial position of the curtain grouting holes, grouting sequence, grouting parameters, etc. are relatively simple.

[0004] In recent years, with the advancement of science and technology and the advocacy of the state, BIM technology has been increasingly applied to the construction of water conservancy and hydropower projects. However, most projects have only achieved simple modeling and remodeling of BIM technology. A few projects have reached the forward design standard, but they are limited to the three-dimensional visualization of the project. The generated BIM model only partially expresses the geometric information of the building structure. A lot of geometric information is difficult to query, extract, calculate and analyze, while other non-geometric information such as construction sequence and process parameters are basically not involved. In the end, the effective information that users can extract is even less than that of two-dimensional drawings. This is obviously not a true BIM 3D model, and it also hinders the construction of subsequent BIM 4D / 5D models. The same is true for the current curtain grouting model, which basically stays at the three-dimensional visualization level and does not reflect the true role of BIM technology. Summary of the invention

[0005] In order to facilitate the establishment of a real curtain grouting BIM model and quickly extract the required information, a method for establishing a curtain grouting BIM model based on 3DE is provided.

[0006] The technical solution adopted by the present invention to solve the above problems is:

[0007] A method for establishing a curtain grouting BIM model based on 3DE, comprising:

[0008] Step 1: Establish a basic model for laying out curtain grouting holes, wherein the basic model includes the top boundary and the bottom boundary of each layer of anti-seepage curtain;

[0009] Step 2, select the top boundary and bottom boundary of the anti-seepage curtain, input the layout parameters of the curtain grouting holes, automatically generate the center plane and curtain grouting holes of each layer of the anti-seepage curtain according to the layout parameters of the curtain grouting holes, and add an identifier to each curtain grouting hole;

[0010] Step 3: input the required information items, locate the curtain grouting hole through the identifier, and perform secondary editing on the curtain grouting hole according to the input content to generate the curtain grouting hole with information, and enter the information corresponding to the curtain grouting hole into the attached specification parameter table;

[0011] Step 4: Automatically extract curtain grouting hole information as needed.

[0012] Furthermore, after the basic model is established in step 1, the step also includes: checking whether the basic model meets the design requirements.

[0013] Furthermore, the curtain grouting hole layout parameters include depression angle, number of rows, row spacing and hole spacing.

[0014] Furthermore, the specific steps of generating the center plane of each layer of anti-seepage curtain and the curtain grouting holes according to the layout parameters of the curtain grouting holes are as follows: generating the center plane of each layer of anti-seepage curtain according to the inclination angle of the curtain grouting holes, the top boundary and the bottom boundary of each layer of anti-seepage curtain; generating the center plane of the corresponding upstream row / middle row / downstream row of anti-seepage curtain according to the number of rows and row spacing of the curtain grouting holes and the center plane of each layer of anti-seepage curtain; generating the curtain grouting holes according to the center plane and hole spacing of each row of anti-seepage curtain.

[0015] Furthermore, when generating curtain grouting holes, the top boundary of the anti-seepage curtain is divided into a straight section and a corner section. The positions of the curtain grouting holes in the straight section are evenly distributed, while the positions of the holes in the corner section are gradually distributed.

[0016] Furthermore, the calculation method of the number of holes k in the straight section is: Where s represents the length of the top boundary, x represents the hole distance, and a represents the number of gradient corrections.

[0017] Furthermore, a is 2 or 3.

[0018] Furthermore, the calculation method of the number of holes i in the corner section is: If the hole bottom distance w of the corner section is ≤1.5x(i-1), the curtain grouting holes are evenly distributed accordingly. Otherwise,

[0019] Furthermore, after the step 3 generates the curtain grouting holes with information, the step also includes classifying the grouting holes according to the geological information.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the method described in the present application can automatically generate a real curtain grouting BIM model according to the hole layout parameters and additional information items. Compared with the existing general three-dimensional visualization model, the effective information is complete and detailed, and the completeness of the description of the curtain grouting project entity and functional characteristics is greatly improved, which is in line with the actual on-site construction, facilitates project information management and improves quality and efficiency on its basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a flow chart of a method for establishing a curtain grouting BIM model based on 3DE. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] like Figure 1 As shown, a method for establishing a curtain grouting BIM model based on 3DE includes:

[0024] Step 1: Establish a basic model for laying out curtain grouting holes; the basic model can be automatically generated according to the design parameters, or an existing model can be referenced. The basic model includes the top and bottom boundaries of each layer of anti-seepage curtain, the dam foundation surface, unfavorable geological bodies, seepage control surfaces, etc.

[0025] In order to ensure the accuracy of the final model and the smooth progress of the modeling process, a geometric check is required after the basic model is established. If the basic model meets the design requirements, the subsequent steps are executed. If not, the designer is prompted to make modifications and adjustments in a timely manner.

[0026] Step 2: Input the layout parameters of the curtain grouting holes, including the depression angle, number of rows, row spacing and hole spacing, etc. Generate the center plane of each layer of anti-seepage curtain and curtain grouting holes according to the layout parameters of the curtain grouting holes, and attach an identifier to each curtain grouting hole. Specifically: Generate the center plane of each layer of anti-seepage curtain according to the depression angle of the curtain grouting holes, the top boundary and the bottom boundary of each layer of anti-seepage curtain; Generate the center plane of the corresponding upstream row / middle row / downstream row of anti-seepage curtain according to the number of rows and spacing of the curtain grouting holes and the center plane of each layer of anti-seepage curtain; Generate curtain grouting holes according to the center plane of each row of anti-seepage curtain, hole layout direction, hole spacing and hole diameter; Add identifiers to the curtain grouting holes to facilitate their positioning during subsequent use.

[0027] Since the deep hole curtain is drilled from top to bottom, the top boundary is located in the grouting flat hole. The spatial position of the top boundary and the hole end points generated on it are of practical significance for on-site construction. In order to arrange the curtain holes more reasonably and evenly, this embodiment divides the top boundary of the anti-seepage curtain into a straight section and a corner section when generating the curtain grouting holes. The straight section curtain grouting holes are evenly distributed, and the corner section holes are gradually distributed. The calculation method of the straight section hole number k is: Where s represents the length of the top boundary, x represents the hole spacing, and a represents the number of gradient corrections. In order to ensure that the corner segment has enough length to meet the hole layout gradient requirements, a can be 2 or 3. Then the calculation method of the number of holes in the corner segment i is: If the hole bottom distance w of the corner section is ≤1.5x(i-1), the curtain grouting holes are evenly distributed accordingly. Otherwise, For example: the top boundary length is 104.6m, the hole spacing is 2m, 104.6 / 2 is rounded down and subtracted from 2 to get 50, then the straight section is 100m with a total of 51 holes; the corner section is 4.6m, 3 holes are initially arranged, and the hole bottom distance is extracted. If it is not greater than (1.5 times the hole spacing × 2), it is arranged in this way, otherwise the number of holes is arranged according to the hole bottom distance / hole spacing rounded up.

[0028] Step 3: Input the required information items, locate the curtain grouting hole through the identifier, and perform secondary editing on the curtain grouting hole according to the input content to automatically generate the curtain grouting hole with information, and enter the corresponding information of the curtain grouting hole into the attached specification parameter table. The input information items may include: hole length, pile number, hole diameter, hole sequence, azimuth, grouting segmentation, grouting pressure, spatial position of the hole mouth and bottom, and maximum allowable deviation of each segment hole bottom. For example, the geometric information of the curtain grouting hole can be extracted, including hole length, azimuth, spatial position of the hole mouth and bottom, etc., and the information can be entered into the attached specification parameter table; the grouting segmentation can be generated based on the generated curtain grouting hole, and the segmentation information and the maximum allowable deviation of each segment hole bottom can be entered into the attached specification parameter table; the curtain grouting hole envelope can be generated according to the hole diameter; the hole mouth endpoints of different colors can be generated according to the hole sequence, and summarized into a set to clearly and intuitively distinguish the distribution of the first-order hole, the second-order hole, and the third-order hole.

[0029] Furthermore, the grouting holes can be classified according to the geological information. For example, the curtain grouting holes can be divided into bedrock drilling sections and concrete drilling sections according to the dam foundation surface to facilitate on-site drilling guidance. Each grouting section can be colored and numbered to facilitate linking to the grouting recorder during construction and automatic entry of grouting process information. According to the spatial distribution of unfavorable geological bodies, the corresponding grouting sections can be automatically searched and marked to facilitate focus during the actual grouting process.

[0030] Step 4: You can re-enter the curtain grouting hole layout parameters or required information items, make secondary modifications to the built curtain grouting BIM model, check the model, and after confirming that it meets the design requirements, obtain the final curtain grouting BIM model, and automatically extract the required information as needed for two-dimensional drawing, progress analysis, cost analysis, etc.

Claims

1. A method for establishing a curtain grouting BIM model based on 3DE, characterized in that: include: Step 1: Establish a basic model for laying out curtain grouting holes, wherein the basic model includes the top boundary and the bottom boundary of each layer of anti-seepage curtain; Step 2, select the top boundary and bottom boundary of the anti-seepage curtain, input the layout parameters of the curtain grouting holes, automatically generate the center plane and curtain grouting holes of each layer of the anti-seepage curtain according to the layout parameters of the curtain grouting holes, and add an identifier to each curtain grouting hole; The curtain grouting hole layout parameters include depression angle, number of rows, row spacing and hole spacing; The specific steps of generating the center plane of each layer of anti-seepage curtain and the curtain grouting holes according to the layout parameters of the curtain grouting holes are as follows: generating the center plane of each layer of anti-seepage curtain according to the inclination angle of the curtain grouting holes, the top boundary and the bottom boundary of each layer of anti-seepage curtain; generating the center plane of the corresponding upstream row / middle row / downstream row of anti-seepage curtain according to the number of rows and row spacing of the curtain grouting holes and the center plane of each layer of anti-seepage curtain; generating the curtain grouting holes according to the center plane and hole spacing of each row of anti-seepage curtain; When generating curtain grouting holes, the top boundary of the anti-seepage curtain is divided into a straight section and a corner section. The positions of the curtain grouting holes in the straight section are evenly distributed, while the positions of the holes in the corner section are gradually distributed. The calculation method of the number of holes k in the straight section is: , where s represents the top boundary length, x represents the hole distance, and a represents the number of gradient corrections; The calculation method of the number of holes in the corner section is: , if the hole bottom distance of the corner segment is , then the curtain grouting holes are evenly distributed according to this, otherwise, ; Step 3: input the required information items, locate the curtain grouting hole through the identifier, and perform secondary editing on the curtain grouting hole according to the input content to generate the curtain grouting hole with information, and enter the information corresponding to the curtain grouting hole into the attached specification parameter table; Step 4: Automatically extract curtain grouting hole information as needed.

2. The method for establishing a curtain grouting BIM model based on 3DE according to claim 1, characterized in that: After the basic model is established in step 1, the step further includes: checking whether the basic model meets the design requirements.

3. The method for establishing a curtain grouting BIM model based on 3DE according to claim 1, characterized in that: a Take 2 or 3.

4. A method for establishing a curtain grouting BIM model based on 3DE according to any one of claims 1 to 3, characterized in that: After the step 3 generates the curtain grouting holes with information, the step also includes classifying the grouting holes according to the geological information.

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