An underground space geological environment overall feature three-dimensional representation and evaluation device

Abstract

The application discloses a kind of underground space geological environment overall characteristics three-dimensional characterization and evaluation device, it is related to underground space geological detection and evaluation technical field, including data acquisition module, data preprocessing module, three-dimensional characterization module, comprehensive evaluation module, central control module and display output module, each module is electrically connected by wire or wireless communication module;Data acquisition module is used to collect original data, including geological body physical parameter data, stratum lithology data, borehole data and adverse geological body detection data;The data acquisition module includes detection unit, borehole data acquisition unit and auxiliary positioning unit, and the detection unit integrates OCTEM detection unit, geological radar detection unit and mu imaging detection unit;Data preprocessing module is used to preprocess the multi-source original data collected by data acquisition module, realizes the synchronous collection of underground space geological environment multi-source data, efficient fusion, high-precision three-dimensional characterization and scientific comprehensive evaluation.

Description

Technical Field

[0001] This invention relates to the field of underground space geological exploration and evaluation technology, and in particular to a three-dimensional characterization and evaluation device for the overall characteristics of underground space geological environment. Background Technology

[0002] With the accelerating pace of urbanization and the continuous growth of the urban population, the development and utilization of underground space has become an important way to alleviate the shortage of urban land resources and enhance the carrying capacity of cities. The complexity of the geological environment of underground space directly affects the design, construction safety, and subsequent operational stability of underground engineering projects. Therefore, accurate three-dimensional characterization and scientific evaluation of the overall characteristics of the geological environment of underground space are the premise and foundation for the rational development and utilization of underground space.

[0003] Currently, geological environment detection and evaluation in underground space mostly adopt single detection methods, such as geological drilling, ground-penetrating radar detection, and transient electromagnetic detection. The detection range and accuracy of single detection technologies are limited, making it difficult to fully cover the complex geological conditions of underground space. Furthermore, ground-penetrating radar has poor detection effect on deep strata. Summary of the Invention

[0004] This application provides a three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment. It solves the problem that existing technologies for underground space geological environment detection and evaluation often rely on single detection methods, such as geological drilling, ground-penetrating radar, and transient electromagnetic detection. These single detection technologies have limited detection range and accuracy, making it difficult to fully cover the complex geological conditions of underground spaces. Furthermore, ground-penetrating radar has poor detection performance in deep strata. This device enables the synchronous acquisition, efficient fusion, high-precision three-dimensional characterization, and scientific comprehensive evaluation of multi-source data on the underground space geological environment. It improves the efficiency and accuracy of underground space geological environment detection and evaluation, and provides reliable technical support for underground engineering design, construction, and safety management.

[0005] This application provides a three-dimensional characterization and evaluation device for the overall characteristics of the geological environment of underground space, including a data acquisition module, a data preprocessing module, a three-dimensional characterization module, a comprehensive evaluation module, a central control module, and a display output module. Each module is electrically connected via wires or a wireless communication module.

[0006] The data acquisition module is used to collect multi-source raw data on the underground geological environment, including physical parameter data of geological bodies, lithological data of strata, borehole data, and detection data of adverse geological bodies. The data acquisition module includes a detection unit, a borehole data acquisition unit, and an auxiliary positioning unit. The detection unit integrates an OCTEM detection unit, a ground-penetrating radar detection unit, and a muon imaging detection unit. The OCTEM detection unit is used to detect the resistivity distribution characteristics of underground strata and identify adverse geological bodies such as gypsum-salt enrichment layers. The ground-penetrating radar detection unit is used to detect lithological interfaces, fractures, and pipeline distribution in shallow strata. The muon imaging detection unit is used to detect the density distribution of deep strata and identify adverse geological bodies such as hidden cavities. The borehole data acquisition unit is used to collect data such as borehole depth, lithology of strata, and geotechnical mechanical parameters. The auxiliary positioning unit uses a combination of a GNSS positioning module and an inertial measurement unit to obtain the precise spatial coordinates of each detection point, ensuring spatial consistency of the data.

[0007] The data preprocessing module is used to preprocess the multi-source raw data collected by the data acquisition module, eliminating noise interference, unifying the data format, and achieving data alignment. The data preprocessing module includes a noise filtering unit, a format conversion unit, and a data alignment unit. The noise filtering unit uses an adaptive filtering algorithm to denoise the raw detection data and improve data accuracy. The format conversion unit converts different types of detection data into a unified standardized format to facilitate subsequent fusion processing. The data alignment unit spatially aligns the multi-source data based on the spatial coordinates obtained by the auxiliary positioning unit to ensure that data obtained by different detection methods correspond to the same underground spatial location.

[0008] The three-dimensional characterization module is used to construct a three-dimensional model of the overall characteristics of the underground geological environment based on preprocessed multi-source data, realizing the visual characterization of the geological environment. The three-dimensional characterization module includes a geological body modeling unit, an adverse geological body identification unit, and a three-dimensional rendering unit. The geological body modeling unit, based on stratigraphic lithology data, resistivity data, and density data, uses a multi-source data fusion modeling algorithm to construct a three-dimensional spatial model of stratigraphic interfaces and geological bodies. It can be combined with the modeling ideas of the Voxler platform to achieve accurate depiction of geological bodies. The adverse geological body identification unit identifies the spatial location, shape, and scale of adverse geological bodies such as gypsum-salt enrichment layers, hidden cavities, and fractures by analyzing resistivity anomalies, density anomalies, and borehole data. The three-dimensional rendering unit uses realistic rendering technology to perform texture mapping and lighting processing on the three-dimensional model, realizing an intuitive presentation of the overall characteristics of the geological environment. It can be scaled up to any scale and observed from any angle. It can also cut the model arbitrarily through the cutting module to observe vertical geological features.

[0009] The comprehensive evaluation module is used to comprehensively evaluate the overall characteristics of the underground space geological environment based on the three-dimensional model constructed by the three-dimensional representation module, and output the evaluation results and risk level. The comprehensive evaluation module includes an evaluation index construction unit, a weight allocation unit, and an evaluation calculation unit. The evaluation index construction unit constructs a multi-dimensional evaluation index system covering stratum stability, risk of adverse geological bodies, rock and soil mechanical properties, and groundwater distribution. The weight allocation unit uses the analytic hierarchy process (AHP) to allocate weights to each evaluation index in combination with the needs of underground engineering. The evaluation calculation unit uses a fuzzy comprehensive evaluation algorithm to quantitatively calculate the overall suitability and risk level of the underground space geological environment in combination with the geological parameters in the three-dimensional model, and outputs an evaluation report.

[0010] The central control module is used to control the collaborative work of each module, receive feedback data from each module, and realize data transmission and scheduling. The central control module adopts an embedded processor with built-in control program, which can set data acquisition parameters, preprocessing rules, modeling parameters and evaluation criteria to realize the automated operation of the device. At the same time, the central control module has data storage function, which can store raw data, preprocessed data, 3D model data and evaluation results for easy subsequent query and traceability.

[0011] The display output module is used to display the 3D representation model, comprehensive evaluation results, and the working status of each module, and can also output an evaluation report. The display output module includes a high-definition display screen and a printing interface. The high-definition display screen can display the rendering effect of the 3D model, evaluation indicators, and risk level in real time, and supports touch operation to facilitate interactive operation by staff. The printing interface can be connected to a printer to output a paper version of the evaluation report to meet the needs of project archiving.

[0012] Furthermore, the data acquisition module also includes a groundwater detection unit for collecting groundwater level and water quality parameters. The groundwater detection unit uses an immersion-type water level sensor and a water quality sensor, which can collect parameters such as groundwater depth, pH value, and conductivity in real time, providing data support for comprehensive evaluation.

[0013] Furthermore, the three-dimensional representation module also includes a model update unit, which is used to update the three-dimensional model in real time based on the newly added detection data to ensure the timeliness of the three-dimensional representation; the model update unit adopts an incremental modeling algorithm, which only updates the model for the region corresponding to the newly added data, avoiding repeated modeling and improving update efficiency.

[0014] Furthermore, the comprehensive evaluation module also includes a risk warning unit, which automatically issues a warning signal when a certain evaluation indicator exceeds the safety threshold based on the evaluation results. The warning signal includes audible and visual warnings as well as pop-up warnings on the display screen, reminding staff to pay attention to geological risks.

[0015] Furthermore, the device also includes a mobile carrier, on which the data acquisition module and the central control module are mounted. The mobile carrier is a tracked mobile platform with anti-slip and anti-bump performance, which can adapt to complex construction site environments and facilitate the detection operations in different areas of underground space.

[0016] Furthermore, the wireless communication module adopts 5G communication technology to achieve high-speed data transmission between modules. Simultaneously, it can transmit data to a remote monitoring terminal, facilitating remote viewing of detection data, 3D models, and evaluation results by staff, thus enabling remote control.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] This invention integrates multiple detection methods, including OCTEM detection, ground-penetrating radar detection, muon imaging detection, and borehole data acquisition, to achieve simultaneous acquisition of multi-source data on the geological environment of underground space. It overcomes the limitations of single detection methods, can comprehensively cover shallow and deep strata, and accurately acquire physical parameters, lithological characteristics, and information on adverse geological bodies, thereby improving the comprehensiveness and accuracy of data acquisition. It is especially suitable for the detection of adverse geological bodies such as gypsum-salt enrichment layers and hidden cavities in red bed areas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to the present invention.

[0020] In the diagram: 101, mobile carrier; 201, data preprocessing module; 202, comprehensive evaluation module; 203, three-dimensional characterization module; 204, data acquisition module; 205, display output module; 206, wireless communication module; 207, central control module. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0022] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] like Figure 1 As shown, this application proposes a three-dimensional characterization and evaluation device for the overall characteristics of underground space geological environment, including a data acquisition module 204, a data preprocessing module 201, a three-dimensional characterization module 203, a comprehensive evaluation module 202, a central control module 207, and a display output module 205. Each module is electrically connected through wires or a wireless communication module 206. The device also includes a mobile carrier 101. The data acquisition module 204 and the central control module 207 are both installed on the mobile carrier 101. The mobile carrier 101 adopts a tracked mobile platform, which has anti-slip and anti-bump performance and can adapt to complex construction site environments.

[0025] Preferably, the data acquisition module 204 includes a detection unit, a borehole data acquisition unit, an auxiliary positioning unit, and a groundwater detection unit. The detection unit integrates an OCTEM detection unit, a ground-penetrating radar detection unit, and a muon imaging detection unit. The OCTEM detection unit uses an OCTEM detector with a working frequency range of 1Hz-10kHz, capable of detecting the resistivity distribution of strata shallower than 200m and effectively identifying unfavorable geological bodies such as gypsum-salt enrichment layers. The ground-penetrating radar detection unit uses a high-frequency ground-penetrating radar with a center frequency of 100MHz-1GHz, capable of detecting the lithology of strata at a depth of 0-30m. Interface, fracture, and pipeline distribution; the muon imaging detection unit uses a dedicated muon imager, which can detect the density distribution of deep strata at depths of hundreds of meters and accurately identify hidden cavities and other unfavorable geological bodies; the borehole data acquisition unit uses a borehole logging tool, which can collect data such as borehole depth, stratum lithology, and geotechnical mechanical parameters; the auxiliary positioning unit uses a combination of a GNSS positioning module and an inertial measurement unit, with positioning accuracy down to the centimeter level, to obtain the precise spatial coordinates of each detection point; the groundwater detection unit uses an immersion-type water level sensor and a water quality sensor, which can collect parameters such as groundwater level depth, pH value, and conductivity in real time.

[0026] Preferably, the data preprocessing module 201 includes a noise filtering unit, a format conversion unit, and a data alignment unit. The noise filtering unit uses an adaptive filtering algorithm to filter random noise and interference signals in OCTEM detection data, ground radar data, and muon imaging data, thereby improving data accuracy. The format conversion unit converts resistivity data, density data, and borehole data into a unified JSON format for easy subsequent fusion processing. The data alignment unit uses a spatial interpolation algorithm based on the spatial coordinates obtained by the auxiliary positioning unit to spatially align multi-source data, ensuring that data obtained by different detection methods correspond to the same underground spatial location.

[0027] Preferably, the 3D characterization module 203 includes a geological body modeling unit, an adverse geological body identification unit, a 3D rendering unit, and a model updating unit. The geological body modeling unit, based on preprocessed stratigraphic lithology data, resistivity data, and density data, employs a multi-source data fusion modeling algorithm, combined with the modeling approach of the Voxler platform, to construct a 3D spatial model of the stratigraphic interface and geological bodies. The underground space is divided into several 3D grids, and attribute values ​​are assigned to each grid. The adverse geological body identification unit, by analyzing resistivity anomalies, density anomalies, and borehole data, identifies the spatial location, shape, and scale of adverse geological bodies, such as gypsum-salt deposits. The resistivity of the enriched layer is lower than that of the surrounding rock, and the density of hidden cavities is lower than that of normal strata. Based on this, the anomaly range can be accurately delineated, and the identification of adverse geological bodies can be completed. The 3D rendering unit adopts realistic rendering technology to perform texture mapping and lighting processing on the 3D model, realizing an intuitive presentation of the overall characteristics of the geological environment. It supports arbitrary scaling and viewing at any angle. The model can be arbitrarily cut through the ClipPlane module to observe vertical geological features. The model update unit adopts an incremental modeling algorithm. When new detection data is acquired, the model is only updated for the area corresponding to the new data, avoiding repeated modeling and improving update efficiency.

[0028] Preferably, the comprehensive evaluation module 202 includes an evaluation index construction unit, a weight allocation unit, an evaluation calculation unit, and a risk warning unit. The evaluation index construction unit constructs a multi-dimensional evaluation index system covering stratum stability, adverse geological body risk, soil and rock mechanical properties, and groundwater distribution. The weight allocation unit uses the analytic hierarchy process (AHP) to allocate weights to each evaluation index in conjunction with the needs of underground engineering. The evaluation calculation unit uses a fuzzy comprehensive evaluation algorithm to score each evaluation index in conjunction with geological parameters in the three-dimensional model, and then calculates the comprehensive score according to the weights. The comprehensive score is divided into four levels: excellent, good, qualified, and unqualified, and an evaluation report is output, corresponding to different levels of geological environmental quality evaluation results. The risk warning unit locates high-risk areas for areas with unqualified comprehensive scores by combining the spatial coordinates of each area in the three-dimensional model and automatically issues a warning. The number of points that constitutes unqualified is preset by those skilled in the art based on actual engineering requirements. The risk warning unit presets safety thresholds for each evaluation index. When an evaluation index exceeds the safety threshold, it automatically issues an audible and visual warning and a pop-up warning on the display screen to remind staff to pay attention to geological risks.

[0029] Preferably, the central control module 207 uses an embedded processor STM32F407 with built-in control program, which can set data acquisition parameters, preprocessing rules, modeling parameters and evaluation criteria to realize the automated operation of the device; the central control module 207 has SD card storage function, which can store raw data, preprocessed data, 3D model data and evaluation results for easy subsequent query and traceability; the wireless communication module 206 adopts 5G communication technology to realize high-speed data transmission between modules, and can also transmit data to a remote monitoring terminal, which can facilitate staff to remotely view detection data, 3D models and evaluation results.

[0030] Preferably, the embedded processor model is STM32F407.

[0031] Preferably, the display output module 205 includes a 10.1-inch high-definition touch screen and a USB printing interface. The high-definition screen can display the rendering effect, evaluation indicators, comprehensive score and risk level of the 3D model in real time, and supports touch operation, which is convenient for staff to set parameters, operate the model and view the evaluation results. The USB printing interface can be connected to a printer to output a paper version of the evaluation report to meet the needs of project archiving.

[0032] The working process of this embodiment is as follows:

[0033] The device is moved to the target underground space detection area. Data acquisition parameters, preprocessing rules, modeling parameters, and evaluation criteria are set via the central control module 207. Each module is then activated, and the device completes a self-test. The data acquisition module 204 simultaneously collects resistivity, density, stratigraphic lithology, borehole data, and groundwater parameters of the underground space through its detection unit, borehole data acquisition unit, and groundwater detection unit. The auxiliary positioning unit simultaneously acquires the spatial coordinates of each detection point. All raw data is transmitted to the central control module 207 for storage. The central control module 207 transmits the raw data to the data preprocessing module 201. A noise filtering unit denoises the raw data, a format conversion unit converts the data to a unified format, and a data alignment unit aligns the multi-source data spatially. The preprocessed data is then transmitted back to the central control module 207. The central control module 207 transmits the preprocessed data to the 3D representation module 203. A geological body modeling unit constructs a 3D model of the underground space geological body, an adverse geological body identification unit identifies adverse geological body information, and a 3D rendering unit renders the 3D model to generate a visualized 3D representation model. The model data is then transmitted back to the central control module 207. The central control module 207 transmits the 3D representation model data to the comprehensive evaluation module 202. The evaluation index construction unit calls the evaluation index system, the weight allocation unit assigns index weights, the evaluation calculation unit performs comprehensive evaluation calculations, and generates evaluation results and reports. The risk warning unit monitors the evaluation indicators in real time and issues a warning signal if any abnormality occurs. The display output module 205 displays the 3D representation model, comprehensive evaluation results, and the working status of each module in real time. Staff can view detailed information via touch operation or print a paper evaluation report via the printing interface. Simultaneously, data can be transmitted to a remote monitoring terminal via the wireless communication module 206 for remote management. When new detection data is added to the detection area, the model update unit can update the 3D model in real time based on the new data to ensure the timeliness of the 3D representation. If the needs of underground engineering change, the evaluation index weights and evaluation standards can be adjusted through the central control module 207 to improve the relevance of the evaluation.

[0034] This invention can be widely applied to urban underground space development, subway tunnel construction, underground utility tunnel construction, mining, and other fields. It enables precise three-dimensional characterization and scientific comprehensive evaluation of the overall geological environment of underground spaces, providing reliable technical support for engineering design, construction safety, and subsequent operation and management. It has high practicality and promotional value.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A three-dimensional characterization and evaluation device for the overall characteristics of the geological environment of underground space, characterized in that, It includes a data acquisition module (204), a data preprocessing module (201), a three-dimensional characterization module (203), a comprehensive evaluation module (202), a central control module (207), and a display output module (205). Each module is electrically connected via wires or a wireless communication module (206). The data acquisition module (204) is used to collect multi-source raw data of the underground space geological environment, including geological body physical parameter data, stratigraphic lithology data, borehole data and adverse geological body detection data; the data acquisition module (204) includes a detection unit, a borehole data acquisition unit and an auxiliary positioning unit; The data preprocessing module (201) is used to preprocess the multi-source raw data collected by the data acquisition module (204), eliminate noise interference, unify the data format, and achieve data alignment; the data preprocessing module (201) includes a noise filtering unit, a format conversion unit, and a data alignment unit; The three-dimensional representation module (203) is used to construct a three-dimensional model of the overall characteristics of the underground space geological environment based on preprocessed multi-source data, so as to realize the visualization representation of the geological environment; the three-dimensional representation module (203) includes a geological body modeling unit, an adverse geological body identification unit and a three-dimensional rendering unit. The comprehensive evaluation module (202) is used to comprehensively evaluate the overall characteristics of the underground space geological environment based on the three-dimensional model constructed by the three-dimensional representation module (203), and output the evaluation results and risk level; the comprehensive evaluation module (202) includes an evaluation index construction unit, a weight allocation unit and an evaluation calculation unit; The central control module (207) is used to control the collaborative work of each module, receive feedback data from each module, realize data transmission and scheduling, and has data storage function. The display output module (205) is used to display the three-dimensional representation model, the comprehensive evaluation results and the working status of each module, and can also output an evaluation report.

2. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The data acquisition module (204) also includes a groundwater detection unit. The groundwater detection unit uses an immersion-type water level sensor and a water quality sensor to collect groundwater parameters such as groundwater depth, pH value, and conductivity.

3. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The three-dimensional representation module (203) also includes a model update unit. The model update unit employs an incremental modeling algorithm to update the 3D model in real time based on newly added detection data.

4. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The comprehensive evaluation module (202) also includes a risk warning unit. The risk warning unit is used to assess the results.

5. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, It also includes a mobile carrier (101); The data acquisition module (204) and the central control module (207) are both installed on the mobile carrier (101); The mobile carrier (101) adopts a tracked mobile platform.

6. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The wireless communication module (206) adopts 5G communication technology, which can realize high-speed data transmission between modules and transmit data to a remote monitoring terminal; The detection unit integrates an OCTEM detection unit, a ground-penetrating radar detection unit, and a muon imaging detection unit.

7. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The noise filtering unit employs an adaptive filtering algorithm; The format conversion unit converts multi-source data into a unified JSON format; The data alignment unit uses spatial interpolation algorithms to achieve data alignment based on the spatial coordinates obtained by the auxiliary positioning unit.

8. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The evaluation index construction unit constructs a multi-dimensional evaluation index system covering formation stability, risk of adverse geological bodies, rock and soil mechanical properties, and groundwater distribution; The weight allocation unit adopts the analytic hierarchy process; The evaluation calculation unit adopts the fuzzy comprehensive evaluation algorithm.

9. A three-dimensional characterization and evaluation device for the overall characteristics of underground space geological environment according to claim 6, characterized in that, The OCTEM detector unit operates in the frequency range of 1Hz-10kHz. The center frequency of the ground-penetrating radar detection unit is 100MHz-1GHz; The auxiliary positioning unit adopts a combination of GNSS positioning module and inertial measurement unit.

10. The three-dimensional characterization and evaluation device for the overall characteristics of the underground space geological environment according to claim 1, characterized in that, The central control module (207) adopts an embedded processor with a built-in control program, which can set data acquisition parameters, preprocessing rules, modeling parameters and evaluation criteria. The display output module (205) includes a high-definition touch screen and a USB printing interface.

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