Geotechnical engineering investigation method based on existing data information

Abstract

The invention discloses a geotechnical engineering investigation method based on existing data information. The geotechnical engineering investigation method mainly solves the problem that traditional geotechnical engineering investigation is low in efficiency and cannot meet the requirement of design work for investigation results. The method comprises the following steps of: collecting engineering geological data in a planning range and geotechnical engineering indexes of an existing project by establishing a regional geological database to serve as a data basis for improving geotechnical engineering investigation efficiency; on the basis of engineering geology partitioning and acquisition and screening of existing project data corresponding to the periphery of a construction site, geotechnical parameter indexes of the corresponding site can be rapidly acquired through weighting operation, and a geotechnical engineering investigation text in a specific format can be generated by relying on an AI data model; and the rock mass parameter indexes are verified and corrected through field actual measurement re-checking after the geotechnical parameter indexes of the construction site are obtained, so that the accuracy and reliability of the investigation result can be ensured while the geotechnical engineering investigation efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering investigation, and particularly relates to a geotechnical engineering investigation method based on existing data information. Background Art

[0002] Geotechnical engineering investigation is an important link in the process of engineering construction. Its purpose is to use testing means and methods to conduct investigation, research, analysis and judgment on the construction site, so as to study the geological conditions for building various projects and the impact of construction on the natural geological environment; when the foundation, foundation and superstructure work together, ensure the foundation strength, stability and measures to prevent inadmissible deformation; at the same time, relevant information on the bearing capacity of the foundation can also be obtained through geotechnical engineering investigation, and engineering experience and geotechnical engineering data required for basic design, construction and foundation reinforcement when necessary can be provided.

[0003] The traditional geotechnical engineering investigation known to the inventors usually conducts work means such as data collection, geological exploration, static cone penetration test, geophysical exploration, in-situ testing, sampling analysis, etc. in sequence to analyze and evaluate the stability, uniformity and suitability of the construction site, the selection of foundation type and foundation parameters, and the foundation pit engineering. And for each construction project, geotechnical engineering investigation work needs to be carried out before the construction drawing design. The same working methods and working processes are adopted, the same working means and working contents are implemented, and finally a geotechnical engineering investigation report with basically the same overall chapter structure is submitted.

[0004] However, since the construction period of the project is generally relatively tight, once the implementation conditions are available, engineering investigation and engineering design are basically carried out simultaneously. The design unit needs to obtain basic information such as the site category, stratigraphic structure, and geotechnical parameters of the construction site as soon as possible, so as to complete the design work such as the selection of engineering foundation type and the form of foundation pit support in a short time. However, each sub-item work in geotechnical engineering investigation, such as geological drilling, in-situ testing, sampling analysis, etc., needs to be operated according to the technical requirements specified in the specifications, and some sub-item works take a long time. From the entry of the investigation construction site to the submission of the investigation results, the overall investigation period generally takes 30 - 50 days, or even longer, and it is impossible to meet the needs of the design unit for the results of geotechnical engineering investigation in a short time.

[0005] The information disclosed in this background art section is only used to deepen the understanding of the background art of the present disclosure, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, the present disclosure provides a geotechnical engineering investigation method based on existing data information, mainly solving the problem that the traditional geotechnical engineering investigation has low efficiency and cannot meet the requirements of the design work for the investigation results.

[0007] According to one aspect of the present disclosure, there is provided a geotechnical engineering investigation method based on existing data information, which includes the following steps: (1) Based on the regional geological database, the sites with the same geological origin and engineering geological units are correspondingly divided into the same engineering geological sub-region; and the engineering geological sub-region corresponding to the construction site is determined; (2) Under the same engineering geological sub-region, at least 5 existing projects closest to the construction site are selected, and the geotechnical engineering investigation results of the existing projects are obtained; (3) After removing the highest value and the lowest value from the corresponding geotechnical engineering indicators in the geotechnical engineering investigation results of the existing projects respectively, the weighted average values corresponding to each geotechnical engineering indicator are calculated as the geotechnical parameter indicators of the construction site, and the weight coefficient corresponding to the existing project closer to the construction site is greater than the weight coefficient corresponding to the existing project farther from the construction site; the geotechnical parameter indicators E s are: ; where N i is the weight coefficient corresponding to the geotechnical engineering indicator of the existing project; E si is the geotechnical engineering indicator of the existing project; (4) Based on the geotechnical parameter indicators of the construction site, a geotechnical engineering investigation report is correspondingly generated, and a review operation including geological drilling, in-situ testing and sampling analysis is carried out on the construction site to verify the geotechnical engineering investigation report.

[0008] In some embodiments of the present disclosure, in the step (1), based on geological surveys, engineering geological zoning, and geological hazard surveys, the regional geological database is correspondingly established with the existing data information of the existing geotechnical engineering investigation projects; the regional geological database includes at least one of topographic features, site categories, hydrogeological conditions, geological drilling, engineering geophysical exploration, in-situ testing, sampling analysis, and basic design data information.

[0009] In some embodiments of the present disclosure, in the step (1), if the construction site straddles multiple engineering geological sub-regions, based on the individual projects within the construction site, the engineering geological sub-regions corresponding to each individual project within the construction site are determined respectively.

[0010] In some embodiments of the present disclosure, in the step (2), an odd number of the existing projects are correspondingly selected.

[0011] In some embodiments of the present disclosure, in the step (3), the geotechnical engineering indicators in the geotechnical engineering investigation results of the existing projects include at least one of formation depth, physical and mechanical indexes of each soil layer, bearing capacity, and shear strength.

[0012] In some embodiments of the present disclosure, in step (3), the geotechnical engineering indicators in the geotechnical engineering investigation results of the existing project further include the site category, the selection of foundation and foundation type, and the foundation pit support structure. For the site category, the selection of foundation and foundation type, and the foundation pit support structure of the construction site, select the grade or method corresponding to the majority of the odd-numbered existing projects.

[0013] In some embodiments of the present disclosure, in step (3), the weight coefficient corresponding to the geotechnical engineering indicators of the existing project within 5 km from the construction site is 0.5; the weight coefficient corresponding to the geotechnical engineering indicators of the existing project within 5-10 km from the construction site is 0.3; the weight coefficient corresponding to the geotechnical engineering indicators of the existing project more than 10 km from the construction site is 0.2. Based on long-term practical experience and scientific research, the above weight setting is reasonable and effective, and can reflect the geological variation law.

[0014] In some embodiments of the present disclosure, in step (4), when the difference between the geotechnical engineering indicators corresponding to the construction site measured and verified and the geotechnical parameter indicators exceeds 5% of the value of the geotechnical parameter indicators, the geotechnical parameter indicators are corrected according to the verification result.

[0015] One or more technical solutions provided in the embodiments of the present application have at least any one of the following technical effects or advantages: By establishing a regional geological database to collect the engineering geological data within the planning scope and the geotechnical engineering indicators of the existing projects as the data basis for improving the geotechnical engineering investigation efficiency; based on the engineering geological zoning and the acquisition and screening of the data of the corresponding existing projects around the construction site, through reasonable and effective weighted operations, the geotechnical parameter indicators of the corresponding site can be quickly obtained, and relying on the AI data model, a geotechnical engineering investigation text in a specific format can be generated; and after obtaining the geotechnical parameter indicators of the construction site, through on-site measurement and verification, the rock mass parameter indicators are verified and corrected, which can ensure the accuracy and reliability of the investigation results while ensuring the geotechnical engineering investigation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic flow chart of a geotechnical engineering investigation method in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to better understand the technical solutions of the present application, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0018] To solve the problem that the traditional geotechnical engineering investigation cannot meet the actual construction period requirements due to low investigation efficiency, this example discloses a geotechnical engineering investigation method based on existing data information. SeeFigure 1 , which specifically includes the following steps: (1) Based on the regional geological database, the sites with the same geological origin and engineering geological unit are correspondingly divided into the same engineering geological sub-region; and the engineering geological sub-region corresponding to the construction site is determined.

[0019] To solve the above problems and considering that under the condition of the same geological origin and geological unit, within a certain regional scope, the geological conditions of the sites have similar characteristics and certain evolution laws, that is, the engineering geological conditions within the same engineering geological unit are basically the same, and the differences in stratigraphic structure, site seismic category, geotechnical engineering parameters, etc. are relatively small. Therefore, in this embodiment, the sites are first divided based on the existing regional geological database, and the engineering geological sub-region corresponding to the area where the construction site is located is determined.

[0020] Specifically, to establish the regional geological database, in this embodiment, the regional geological survey data at a scale of 1:200,000, the engineering geological zoning at a scale of 1:100,000, and the geological disaster survey and zoning data at a scale of 1:50,000 publicly released by the geological department are collected. The above existing geological achievements include the geological origin, engineering geological unit, and geological characteristics of each engineering geological unit in different regions and different sections of each place. Based on this data, the regional geological database is established accordingly, and the engineering geological sub-region is carried out in combination with the current national territorial space planning data. In this example, the sites with the same geological origin and engineering geological unit are divided into the same engineering geological sub-region, and within the same engineering geological sub-region, their engineering geological conditions are similar.

[0021] After the engineering geological sub-region is carried out based on the regional geological database in combination with the national territorial space planning, according to the inflection point coordinates and boundary lines of the construction site, the engineering geological sub-region where the construction site is located is determined. In some other embodiments, the construction site straddles multiple engineering geological sub-regions at the same time, and the engineering geological conditions in different engineering geological sub-regions are different. To ensure the accuracy of the final geotechnical engineering investigation results, in this example, the individual project in the construction site, that is, a single building, is used as the unit or benchmark for engineering geological division, and the engineering geological sub-region within the scope of each individual project in the construction site is determined respectively.

[0022] In addition, in this embodiment, to quickly determine the geotechnical parameter indicators of the construction site and considering the large number of existing urban construction projects and the considerable number of corresponding geotechnical engineering investigation projects, in this example, the existing geotechnical engineering investigation project data in each engineering geological sub-region in the regional geological database is further collected to improve and enrich the unit data information of each engineering geological sub-region in the regional geological database, including topographic features, site category, hydrogeological conditions, geological drilling (including trenches and exploration wells), engineering geophysical prospecting, in-situ testing, sampling analysis, and foundation design.

[0023] In this embodiment, taking the geotechnical engineering investigation of a certain industrial park construction project in Zhengzhou City as an example, through the collection of existing data and the establishment of a regional geological database, it can be known that the southwestern region of Zhengzhou City belongs to the loess hilly engineering geological unit, and its geological origin is the accumulation of proluvial and eluvial deposits in front of the mountain slope; the central region belongs to the gently inclined alluvial plain engineering geological unit in front of the mountain, and the geological origin is the accumulation of alluvial and diluvial deposits in the transitional zone from the mountain front to the plain; the northeastern region belongs to the Yellow River alluvial plain engineering geological unit, and the geological origin is the accumulation of sediment carried by the Yellow River floods. And this construction project is located in the northeastern region of Zhengzhou City, belonging to the geological division of the Yellow River flood alluvial plain. The strata within a depth of 50m in this area are soil layers such as silt, silty clay, and fine sand formed by river alluvium, and the stratum structure is basically stable. Moreover, there are many construction projects in this area, and the data volume of geotechnical engineering investigation projects is rich.

[0024] (2) Under the same engineering geological division, select the 5 existing projects closest to the construction site and obtain the geotechnical engineering investigation results of the existing projects.

[0025] Considering that there are differences in the corresponding geotechnical engineering indicators under the same engineering geological division, in order to accurately obtain the geotechnical parameter indicators corresponding to the construction site, in this embodiment, since the construction site is in a single engineering geological division, 5 existing projects closest to the construction site under the engineering geological division corresponding to the construction site are selected as the basis for the geotechnical parameter indicators of the construction site, and the geotechnical engineering investigation results of each existing project are obtained from the established regional geological data respectively. In some other embodiments, an odd number of at least 5 existing projects are selected as the data basis. And in some other embodiments, since the construction site straddles multiple engineering geological divisions, in this case, each single project in the construction site is used as the smallest unit, and 5 existing projects closest to the single project are respectively selected under the engineering geological division corresponding to each single project, and the geotechnical engineering investigation results of each existing project are obtained.

[0026] In this example, the unit data of the geotechnical engineering investigation results of 5 projects including Luxembourg Plot 1, Longhu International Center, Lanxi Heyuan, Lanxi Xinyuan, and the residential plot TA6-09-01 in the north of China Resources in the North Longhu around the industrial park construction project are selected from the regional geological database. In this example, the unit data of the geotechnical engineering investigation results specifically include topographic elevation, seismic intensity, drilling data, static cone penetration data, in-situ test data, geotechnical test data, groundwater measurement data, water quality analysis data, and foundation type selection.

[0027] (3) After removing the maximum and minimum values of the corresponding geotechnical engineering indicators in the geotechnical engineering investigation results of the existing projects respectively, calculate the weighted average values corresponding to each geotechnical engineering indicator as the geotechnical parameter indicators of the construction site, and the weight coefficient corresponding to the existing project closer to the construction site is greater than the weight coefficient corresponding to the existing project farther from the construction site.

[0028] In this embodiment, specifically obtain the stratum burial depth, physical and mechanical indexes of each soil layer, bearing capacity, shear strength and other geotechnical engineering indexes in the geotechnical engineering investigation results of the existing projects from the regional geological database. In order to reduce data differences and more accurately reflect the geotechnical parameter indexes at the construction site, in this embodiment, the obtained data indexes are processed. Specifically, remove the maximum and minimum values in each index data respectively, and then assign corresponding weight coefficients to the remaining data, and calculate the average value corresponding to the index, and use this average value as the geotechnical parameter index corresponding to the construction site to be investigated. Among them, in this embodiment, the geotechnical parameter index E of the construction site s The mean value is calculated corresponding to the following formula: ; Among them, N i is the weight coefficient corresponding to the geotechnical engineering index of the existing project; E si is the geotechnical engineering index of the existing project.

[0029] In this example, the data processing is demonstrated by taking the foundation bearing capacity of a certain soil layer as an example. Let the foundation bearing capacity of this soil layer be Fa, and the bearing capacity values of this soil layer corresponding to the investigation results of 5 surrounding sites be Fa1, Fa2, Fa3, Fa4, Fa5 respectively. Assume that Fa5 is the maximum value and Fa1 is the minimum value. Then Fa1 and Fa5 are excluded, and the weight coefficients corresponding to the remaining bearing capacity values are set as N2, N3, N4 respectively. Then the foundation bearing capacity Fa of this soil layer corresponding to the construction site is: Fa = (N2 + N3 + N4) / (N2 / Fa2 + N3 / Fa3 + N4 / Fa4) (1).

[0030] Among them, in this example, it is set that the weight coefficient of the geotechnical engineering index of the existing project closer to the construction site is greater than the weight coefficient of the geotechnical engineering index of the existing project farther from the construction site. Specifically, in this embodiment, the weight coefficient corresponding to the geotechnical engineering index of the existing project within 5 km from the construction site is set to 0.5; the weight coefficient corresponding to the geotechnical engineering index of the existing project within 5 - 10 km from the construction site is set to 0.3; the weight coefficient corresponding to the geotechnical engineering index of the existing project more than 10 km from the construction site is set to 0.2. Thus, the contribution of each geotechnical engineering index of the existing project to the geotechnical parameter index of the construction site to be investigated is adjusted through the weight coefficient.

[0031] Specifically, in this embodiment, the closest projects to the proposed construction site are Lanxi Heyuan and Lanxi Xinyuan, with distances of 3.0 km and 3.5 km from the proposed construction site respectively. Therefore, the weight coefficients corresponding to the two projects are both 0.5. The residence on the plot TA6-09-01 of China Resources North Longhu is 6.5 km away from the proposed site, so the corresponding weight coefficient is 0.3. The distances from Luxembourg Plot 1 and Longhu International Center to the proposed site are 10.5 km and 11.0 km respectively, so the weight coefficients corresponding to the two projects are both 0.2. Taking the second-layer silt of the foundation of the construction site as an example, the average thickness of this layer of soil provided in the exploration reports of Lanxi Heyuan and Lanxi Xinyuan are 3.3 m and 2.0 m respectively, and the bearing capacities are both 130 kPa. The exploration report of the residence on the plot TA6-09-01 of China Resources North Longhu provides that the average thickness of this layer of soil is 1.66 m and the bearing capacity is 130 kPa. The exploration reports of Luxembourg Plot 1 and Longhu International Center provide that the average thickness of this layer of soil are 2.3 m and 2.1 m respectively, and the bearing capacities are 115 kPa and 120 kPa respectively. After removing the highest and lowest values, the average thickness H and bearing capacity Fa of the second-layer silt of the proposed site can be calculated respectively according to the calculation formula shown in Equation (1).

[0032] In addition, the geotechnical engineering indicators in the geotechnical engineering exploration results of existing projects also include site category, foundation type selection, and foundation pit support structure. Therefore, for the determination of the site category, foundation type selection, and foundation pit support structure of the construction site, in this embodiment, the grade or method corresponding to the majority of the odd-numbered existing projects is selected as the geotechnical engineering indicator of the construction site to be explored.

[0033] Based on the geotechnical parameter indicators of the construction site, generate a geotechnical engineering exploration report, and conduct a review operation on the construction site including geological drilling, in-situ testing, and sampling analysis to verify the geotechnical engineering exploration report.

[0034] Since geotechnical engineering investigation reports have similar text structures and chapter formats, in this embodiment, to improve the efficiency of data summarization after geotechnical engineering investigation, an existing AI model compiles and generates the corresponding geotechnical engineering investigation report text based on the geotechnical parameter indicators of the construction site obtained in step (3), and uses it as the intermediate investigation result. However, to ensure the reliability of each data in the generated geotechnical engineering investigation report text, in this embodiment, a review operation is carried out on the construction site. By selecting representative points to conduct geological drilling, in-situ testing, sampling analysis and other review and actual measurement operations, it is verified whether the geotechnical parameter indicators in the geotechnical engineering investigation report are consistent with the review and actual measurement results. In this example, when the difference between the geotechnical engineering indicators corresponding to the review and actual measurement of the construction site and the geotechnical parameter indicators in the report text exceeds 5% of the value of the geotechnical parameter indicators, the geotechnical parameter indicators are corrected according to the review and actual measurement results. Thus, the verification and correction of the geotechnical parameter indicators are realized through the review and actual measurement with less workload, while ensuring the efficiency of geotechnical engineering investigation and the true reliability of the data in the investigation results, and finally obtaining the final geotechnical engineering investigation technical achievements.

[0035] When conducting geotechnical engineering investigation by the above method, compared with the traditional geotechnical engineering investigation method, it saves two-thirds of the field and indoor investigation workload, and also saves more than two-thirds of the investigation period, and the finally obtained geotechnical engineering investigation results are accurate and reliable.

[0036] Although some preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of its inventive concept. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A geotechnical engineering investigation method based on existing data information, characterized in that, It includes the following steps: (1) Based on the regional geological database, the sites with the same geological origin and engineering geological units are correspondingly divided into the same engineering geological sub-region; and the engineering geological sub-region corresponding to the construction site is determined; (2) Under the same engineering geological sub-region, at least 5 existing projects closest to the construction site are selected, and the geotechnical engineering investigation results of the existing projects are obtained; (3) After removing the highest and lowest values from the corresponding geotechnical engineering indicators in the geotechnical engineering investigation results of the existing project respectively, corresponding weights are assigned to each geotechnical engineering indicator, and the mean value is calculated correspondingly as the geotechnical parameter index of the construction site. Moreover, the weight coefficient corresponding to the existing project close to the construction site is greater than the weight coefficient corresponding to the existing project far from the construction site; the geotechnical parameter index E of the construction site s is as follows: ； Among which N i is the weight coefficient corresponding to the geotechnical engineering index of the existing project; E si is the geotechnical engineering index of the existing project; (4) Based on the geotechnical parameter indicators of the construction site, a geotechnical engineering investigation report is generated correspondingly, and a review operation including geological drilling, in-situ testing and sampling analysis is carried out on the construction site to verify the geotechnical engineering investigation report.

2. The geotechnical engineering exploration method according to claim 1, characterized in that In the step (1), the regional geological database is established corresponding to the existing data information of the existing geotechnical engineering investigation projects based on geological surveys, engineering geological zoning, and geological hazard surveys; the regional geological database includes at least one of topographic features, site categories, hydrogeological conditions, geological drilling, engineering geophysical exploration, in-situ testing, sampling analysis, and basic design data information.

3. The geotechnical engineering investigation method according to claim 1, characterized in that In the step (1), when the construction site straddles multiple engineering geological sub-regions, based on the individual projects within the construction site, the engineering geological sub-regions corresponding to each individual project within the construction site are determined respectively.

4. The geotechnical engineering exploration method according to claim 1, characterized in that, In the step (2), an odd number of the existing projects are correspondingly selected.

5. The geotechnical engineering exploration method according to claim 1, characterized in that, In the step (3), the geotechnical engineering indicators in the geotechnical engineering investigation results of the existing projects include at least one of the formation depth, physical and mechanical indicators of each soil layer, bearing capacity, and shear strength.

6. The geotechnical engineering exploration method according to claim 1 or 5, characterized in that In the step (3), the geotechnical engineering indicators in the geotechnical engineering investigation results of the existing projects also include the site category, foundation type selection, and foundation pit support structure. The site category, foundation type selection, and foundation pit support structure of the construction site are selected according to the grades or methods corresponding to the majority of the odd-numbered existing projects.

7. The geotechnical engineering exploration method according to claim 1, characterized in that, In the step (3), the weight coefficient corresponding to the geotechnical engineering indicators of the existing projects within 5 km of the construction site is 0.5; the weight coefficient corresponding to the geotechnical engineering indicators of the existing projects within 5 - 10 km of the construction site is 0.3; the weight coefficient corresponding to the geotechnical engineering indicators of the existing projects more than 10 km away from the construction site is 0.

2.

8. The geotechnical engineering investigation method according to claim 1, characterized in that, In the step (4), when the difference between the geotechnical engineering indicators corresponding to the construction site obtained by the review and the geotechnical parameter indicators exceeds 5% of the value of the geotechnical parameter indicators, the geotechnical parameter indicators are corrected correspondingly according to the review results.

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