Full-section excavation parameter identification method and apparatus for large-section tunnel having fractured surrounding rock

Abstract

Provided in the present application are a full-section excavation parameter identification method and apparatus for a large-section tunnel having fractured surrounding rock, which can solve the problem of inaccurate blast hole position arrangement in tunneling projects. The method comprises: on the basis of a blasting section design of a tunnel, establishing a three-dimensional finite element model; on the basis of blasting design parameters and the three-dimensional finite element model, performing simulation so as to obtain blasting quality parameters; selecting from a plurality of groups of blasting design parameters one group of blasting design parameters which are closest to preset quality parameters and using same as target blasting design parameters, the preset quality parameters being acceptance grade standards of the tunnel; acquiring first thermal imaging information of first hotspots of a section to be blasted, the first hotspots being same heat source generation units arranged, before blast hole arrangement, on blast hole positions that are actually measured and selected on said section on the basis of the target blasting design parameters; and on the basis of the first thermal imaging information and the target blasting design parameters, calibrating actual hole spacing parameters.

Description

Method and equipment for identifying parameters of full-section excavation of large-section tunnels with broken surrounding rock Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and in particular to a method and equipment for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock. Background Art

[0002] Smooth blasting is widely used in tunneling projects, especially in tunnels with soft and broken surrounding rock, due to its advantages such as reducing over-excavation and under-excavation, minimizing damage to surrounding rock, producing a smooth and flat contour after blasting, and effectively reducing costs. The selection of blasting parameters and the reliability of the construction process are particularly important to the final effect of smooth blasting. However, during actual on-site operations of tunneling projects, construction workers often encounter problems such as improper arrangement of blasting parameters, which affects the final blasting effect.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a method and device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, which can at least solve the problem of inaccurate blasthole point arrangement in tunnel excavation projects.

[0005] A first aspect of an embodiment of the present application provides a method for identifying full-section excavation parameters for a large-section tunnel with broken surrounding rock, the method comprising:

[0006] Establish a three-dimensional finite element model based on the tunnel blasting section design;

[0007] Performing simulation based on blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters;

[0008] selecting a group of blasting design parameters that is closest to a preset quality parameter from among the multiple groups of blasting design parameters as a target blasting design parameter, wherein the preset quality parameter is an acceptance grade standard of the tunnel;

[0009] Acquire first thermal imaging information of a first hot spot on the surface to be blasted, wherein the first hot spot is the same heat source generating unit arranged at a blasthole point selected by actual measurement on the surface to be blasted based on the target blasting design parameters before blasthole arrangement;

[0010] Based on the first thermal imaging information and the target blasting design parameters, actual hole spacing parameters are calibrated.

[0011] Optionally, also include:

[0012] collecting second thermal imaging information of a second hot spot of the surface to be blasted after the blasting holes are arranged, wherein the second hot spot is the same heat source generating unit arranged in the blasting holes after the blasting holes are arranged;

[0013] The actual aperture parameters are calibrated based on the second thermal imaging information and the target blasting design parameters.

[0014] Optionally, calibrating actual aperture parameters based on the second thermal imaging information and the target blasting design parameters includes:

[0015] determining a heat concentration range of each second hot spot based on the second thermal imaging information;

[0016] Predicting the actual blasthole diameter of each actual blasthole after the blasthole arrangement based on the heat concentration range;

[0017] The actual blasthole diameter is calibrated according to the target blasting design parameters.

[0018] Optional,

[0019] The blasting section design includes groundwater information of the tunnel.

[0020] Optional,

[0021] The blasting quality parameters include average linear overbreak;

[0022] The preset quality parameters include a preset linear overbreak amount.

[0023] Optional,

[0024] The blasting quality parameters also include local underbreak;

[0025] The preset quality parameters include a preset local underbreak amount.

[0026] Optional,

[0027] The method of obtaining blasting quality parameters by performing numerical simulation based on multiple sets of blasting design parameters and the three-dimensional finite element model includes:

[0028] Determining the surrounding rock grade based on the rock mass properties of the tunnel;

[0029] determining the surrounding rock in-situ stress based on the surrounding rock grade;

[0030] The blasting quality parameters are obtained by performing numerical simulation based on the surrounding rock in-situ stress.

[0031] A second aspect of the embodiments of the present application provides a device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, the device comprising:

[0032] Establishing units for building a three-dimensional finite element model based on the tunnel cross-section design;

[0033] A simulation unit, configured to simulate the blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters;

[0034] a selection unit, configured to select a group of blasting design parameters that is closest to a preset quality parameter from among the multiple groups of blasting design parameters as a target blasting design parameter, wherein the preset quality parameter is an acceptance grade standard of the tunnel;

[0035] An imaging unit, configured to obtain first thermal imaging information of a first hot spot on the surface to be blasted, wherein the first hot spot is the same heat source generating unit arranged at a blasthole point actually measured and selected on the surface to be blasted based on the target blasting design parameters before blasthole arrangement;

[0036] A calibration unit is used to calibrate actual hole spacing parameters based on the first thermal imaging information and the target blasting design parameters.

[0037] A third aspect of an embodiment of the present application provides an electronic device, which includes at least one processor and at least one memory connected to the processor, wherein the processor is used to call program instructions in the memory to execute the full-section excavation parameter identification method for a large-section tunnel with broken surrounding rock as described in any one of the first aspects.

[0038] A fourth aspect of an embodiment of the present application provides a storage medium, which includes a stored program, wherein when the above program is running, the device where the above storage medium is located is controlled to execute the full-section excavation parameter identification method for a large-section tunnel with broken surrounding rock as described in any one of the above-mentioned first aspects.

[0039] In summary, an embodiment of the present application provides a method for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, the method comprising: establishing a three-dimensional finite element model based on the blasting section design of the tunnel; simulating the three-dimensional finite element model based on multiple sets of blasting design parameters to obtain blasting quality parameters; selecting a group of the multiple sets of blasting design parameters that is closest to the preset quality parameters as the target blasting design parameters, and the preset quality parameters are the acceptance grade standards for the tunnel; obtaining first thermal imaging information of the first hot spot of the surface to be blasted, wherein the first hot spot is the same heat source generating unit arranged at the blast hole point selected by actual measurement on the surface to be blasted based on the target blasting design parameters before the blast holes are arranged; and calibrating the actual hole spacing parameters based on the first thermal imaging information and the target blasting design parameters. The method provided in the embodiments of the present application can establish a three-dimensional finite element model based on the actual conditions of the tunnel, and perform blasting simulation on the three-dimensional finite element model using multiple sets of blasting design parameters, thereby obtaining different blasting quality parameters. The optimal blasting design parameters are selected as the target blasting design parameters, thereby improving the accuracy of the blasting design parameter selection. On-site construction personnel arrange heat source generating units with the same blasthole locations selected based on actual measurements on the blasting surface according to the target blasting design parameters, thereby obtaining a heat map containing blasthole location information of all blastholes on the blasting section. The heat map is compared with the target blasting design parameters, and the rectangular coordinates of the first hotspot corresponding to each blasthole are obtained based on the heat map. The hole spacing of the blastholes marked on the blasting surface is then obtained. The hole spacing is compared with the hole spacing in the target blasting design parameters, and blastholes with deviations in marking can be comprehensively and quickly identified, thereby resolving the problem of inaccurate hole location arrangement in tunnel excavation projects.

[0040] Correspondingly, the full-section excavation parameter identification device for a large-section tunnel with broken surrounding rock provided in the embodiment of the present application also has the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0042] FIG1 is a schematic flow chart of a possible method for identifying full-section excavation parameters for a large-section tunnel with broken surrounding rock, provided in an embodiment of the present application;

[0043] FIG2 is a schematic block diagram of a possible device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock provided by an embodiment of the present application;

[0044] FIG3 is a schematic diagram of the hardware structure of a possible device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock provided by an embodiment of the present application;

[0045] FIG4 is a schematic structural block diagram of a possible electronic device provided in an embodiment of the present application;

[0046] FIG5 is a schematic structural block diagram of a possible computer-readable storage medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The embodiments of the present application provide a method and device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, which can at least solve the problem of inaccurate blasthole point arrangement in tunnel excavation projects.

[0048] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments.

[0049] Please refer to FIG1 , which is a schematic flow chart of a method for identifying parameters of full-section excavation of a large-section tunnel with broken surrounding rock provided by an embodiment of the present application, which may specifically include: S110 - S150 .

[0050] S110, establish a three-dimensional finite element model based on the tunnel blasting section design;

[0051] For example, the above-mentioned blasting section design can obtain the external structural characteristic parameters such as the contour, span, height of the blasting section through equipment such as a laser scanner, and also includes the structural characteristics inside the surrounding rock in which the tunnel is located, including the structural characteristic parameters such as the scale, shape, and density of the surrounding rock. Based on the above-mentioned structural parameters, a three-dimensional finite element model is established using software such as LS-DYNA. At the same time, in the above-mentioned three-dimensional finite element model, air, rock and soil and other information can also be simulated according to the actual situation on site.

[0052] S120, performing simulation based on the blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters;

[0053] Exemplarily, the aforementioned blasting design parameters include those selected by the blasting designer based on project characteristics, geological conditions, technical methods, equipment type, equipment selection, environmental conditions, and project requirements, using empirical formulas and incorporating construction experience, or through field testing. These parameters, based on actual conditions, include at least the following: blasthole diameter, blasthole spacing, blasthole depth, smooth blast layer thickness, charge density, and decoupling coefficient. These parameters are not limited in this application document and will be determined based on actual project conditions. The aforementioned blasting quality parameters, such as slope flatness, are indicators for evaluating smooth blasting quality.

[0054] It should be noted that, based on the selection of different calculation coefficients or different formulas, multiple sets of blasting design parameters can be listed, and blasting simulation can be performed on the same three-dimensional finite element model for each set of blasting design parameters to obtain multiple sets of the above-mentioned blasting quality parameters.

[0055] S130, selecting a group of blasting design parameters that is closest to a preset quality parameter from among the multiple groups of blasting design parameters as target blasting design parameters, where the preset quality parameter is an acceptance grade standard for the tunnel;

[0056] For example, the preset quality parameters are determined based on the actual on-site engineering and in combination with relevant design specifications, industry standards, etc. It is easy to understand that the acceptance level parameters are different depending on the different lithology of the tunnel. For example, if the tunnel lithology is medium-hard rock, its semi-porosity is usually greater than 75% to be qualified, while for hard rock, this parameter is usually greater than 90%. The preset quality parameters are used to represent the parameters corresponding to the acceptance level standard of the current tunnel. From the multiple groups of blasting quality parameters mentioned above, the group closest to the preset quality parameters can be selected as the target blasting design parameters. The closest group also represents the group with the best simulated blasting effect, and therefore can be used as the blasting design parameters for actual application.

[0057] S140, obtaining first thermal imaging information of a first hot spot on the surface to be blasted;

[0058] Exemplarily, the first hotspot is an identical heat source generating unit placed at the blasthole locations selected through actual measurements on the blasting surface based on target blasting design parameters before blasthole placement. Such heat source generating units can include devices capable of emitting heat significantly different from the tunnel ambient temperature, such as thermistors and heating wires, without specific limitation. By placing identical heat source generating units at all marked blasthole locations on the blasting surface, first thermal imaging information, or a thermodynamic map, can be obtained reflecting the first hotspots corresponding to all marked blasthole locations. From this thermodynamic map, the spacing between the first hotspots corresponding to all marked blasthole locations can be comprehensively and quickly determined. This can be achieved by establishing a central coordinate system, which can then determine the spacing between all marked blastholes.

[0059] S150 , calibrating actual hole spacing parameters based on the first thermal imaging information and target blasting design parameters.

[0060] For example, the actual hole spacing refers to the actual hole spacing of blasting holes arranged on the blasting surface during tunnel excavation. It can be explained that surveyors survey and stake out the blasting surface based on target blasting design parameters. Based on these target blasting design parameters, they mark the locations of the blasting holes on the blasting surface with red paint or other means. Construction workers then arrange the blasting holes based on the marked locations. However, deviations may occur during the marking process, resulting in deviations between the actual locations of the blasting holes and the target blasting design locations. This can lead to unsatisfactory surface blasting results and even serious over-excavation and under-excavation, impacting project quality. By comparing the spacing between each first hot spot in the first thermal imaging information, the hole spacing of each marked blasting hole can be comprehensively and quickly determined. By comparing this hole spacing with the hole spacing of each blasting hole in the target blasting design parameters, blasting holes with marked deviations can be quickly and accurately identified, allowing on-site personnel to readjust these deviated blasting holes to meet the requirements of the target blasting design parameters.

[0061] According to the method for identifying full-section excavation parameters for a large-section tunnel with broken surrounding rock provided in the above embodiment, a three-dimensional finite element model can be established based on the actual tunnel conditions. Blasting simulations can be performed on the three-dimensional finite element model using multiple sets of blasting design parameters, thereby obtaining different blasting quality parameters. The optimal blasting design parameters are then selected as target blasting design parameters, thereby improving the accuracy of blasting design parameter selection. On-site construction personnel arrange heat source generating units at the same blasthole locations selected based on actual measurements on the blasting surface according to the target blasting design parameters, thereby obtaining a thermal map containing blasthole location information for all blastholes on the blasting surface. By comparing the thermal map with the target blasting design parameters, the rectangular coordinates of the first hotspot corresponding to each blasthole can be obtained based on the thermal map, thereby obtaining the hole spacing of the blastholes marked on the blasting surface. By comparing this hole spacing with the hole spacing in the target blasting design parameters, blastholes with marking deviations can be comprehensively and quickly identified, thereby resolving the problem of inaccurate hole location arrangement in tunnel excavation projects.

[0062] According to some embodiments, second thermal imaging information of a second hot spot of the surface to be blasted after the blasting holes are arranged is collected, wherein the second hot spot is the same heat source generating unit arranged in the blasting holes after the blasting holes are arranged;

[0063] The actual aperture parameters are calibrated based on the second thermal imaging information and the target blasting design parameters.

[0064] For example, after on-site construction workers complete the drilling task of the blasting holes, the same heat source generating unit can be arranged inside each blasting hole, and multiple hot spots can be formed to correspond to the blasting holes, so that thermal imaging information corresponding to each blasting hole can be obtained from the multiple hot spots.

[0065] According to some embodiments, calibrating actual aperture parameters based on the second thermal imaging information and target blasting design parameters includes:

[0066] determining a heat concentration range of each second hot spot based on the second thermal imaging information;

[0067] Predicting the actual blasthole diameter of each actual blasthole after blasthole arrangement based on the heat concentration range;

[0068] The actual blasthole diameter is calibrated according to the target blasting design parameters.

[0069] For example, since the blast hole can play the role of isolating external heat, the heat emitted by the heat source generating unit in the blasting blast hole will be limited in the blast hole. The heat concentration range of each hot spot is determined from the thermal imaging information obtained from the above-mentioned heat source generating unit in each blasting blast hole. The above-mentioned heat concentration range can reflect the actual aperture of each blasting blast hole after the on-site construction personnel complete the drilling task. Therefore, the heat concentration range of different hot spots in the thermal map formed by the above-mentioned multiple hot spots can reflect the actual blast hole aperture of each blasting blast hole. According to the comparison between the actual blast hole aperture and the blast hole aperture in the above-mentioned target blasting design parameters, the blast hole with deviation is calibrated.

[0070] According to the method for identifying full-section excavation parameters for a large-section tunnel with broken surrounding rock provided by the above embodiment, after the construction personnel complete the drilling task, the same heat source generating unit can be arranged for each blasting hole, and the corresponding blasting hole diameter can be determined based on the heat concentration range generated by each heat source generating unit. Therefore, the actual blasting hole diameter of each blasting hole can be comprehensively and quickly identified from the thermal map formed by the above heat source generating unit. By comparing the actual blasting hole diameter with the blasting hole diameter in the target blasting design parameters, the blasting hole that has deviated from the drilling task can be identified. The method provided by the embodiment of the present application can comprehensively and quickly identify blasting holes with deviations in aperture, preventing the occurrence of serious engineering quality problems such as unsatisfactory blasting effects caused by the blasting hole diameter not meeting the design requirements, and eliminating the need for secondary measurements of each blasting hole, thereby accelerating the progress of the project.

[0071] According to some embodiments,

[0072] The blasting section design includes the groundwater information of the tunnel.

[0073] For example, groundwater detectors and other related equipment can be used to detect groundwater within the tunnel's surrounding rock. It should be noted that groundwater can soften the surrounding rock, reducing its strength, which can affect the original blasting design parameters. Based on the acquired groundwater information and the internal structural characteristics of the surrounding rock, the surrounding rock strength can be reassessed, making the blasting design parameters more consistent with actual geological conditions. This improves the blasting effectiveness of smooth blasting and even avoids serious project quality issues or even tunnel collapse caused by misjudging the surrounding rock strength.

[0074] According to some embodiments,

[0075] Blasting quality parameters include average linear overbreak;

[0076] The preset quality parameters include a preset linear overbreak amount.

[0077] For example, in tunnel excavation projects, overexcavation will increase the amount of slag and lining, thereby increasing the project cost. It will also affect the overall flatness of the surrounding rock and cause stress concentration problems, affecting the stability of the surrounding rock. Especially in the case of weak and broken surrounding rock, overexcavation is an important indicator for evaluating the quality parameters of smooth blasting. The embodiment of the present application constructs a three-dimensional finite element model based on the blasting section design of the tunnel, and performs smooth blasting simulation on the above three-dimensional finite element model to obtain blasting quality parameters. The above blasting quality parameters include average linear overexcavation. The above preset linear overexcavation can be set according to the project category, actual site conditions, and relevant specifications, without specific limitations. The optimal parameters are obtained by comparing the average linear overexcavation simulated based on multiple sets of blasting design parameters with the preset linear overexcavation.

[0078] According to some embodiments,

[0079] Blasting quality parameters also include local underbreak;

[0080] The preset quality parameters include a preset local underbreak amount.

[0081] For example, in tunnel excavation projects, underbreak will affect the thickness of the lining after blasting, posing a hidden danger to project quality and safety. In addition, underbreak is not allowed in some structural parts of the tunnel. In the embodiment of the present application, a three-dimensional finite element model is constructed based on the blasting section design of the tunnel, and a smooth blasting simulation is performed on the above three-dimensional finite element model to obtain blasting quality parameters. The above blasting quality parameters include local underbreak. The above preset local underbreak can be set according to the project category, actual site conditions, and relevant specifications without specific limitation. The optimal parameters are obtained by comparing the local underbreak simulated based on multiple sets of blasting design parameters with the preset local underbreak.

[0082] According to some embodiments,

[0083] The blasting quality parameters obtained by numerical simulation based on multiple sets of blasting design parameters and three-dimensional finite element models include:

[0084] Determine the surrounding rock grade based on the rock mass properties of the tunnel;

[0085] Determine the surrounding rock in-situ stress based on the surrounding rock grade;

[0086] The blasting quality parameters are obtained by numerical simulation based on the surrounding rock stress.

[0087] For example, the influence of the in-situ stress of the tunnel surrounding rock can be incorporated into the blasting simulation using a three-dimensional finite element model to obtain blasting design parameters that better reflect the actual geological conditions. The surrounding rock grade is determined based on the detected rock mass properties of the tunnel, engineering rock mass classification standards, railway tunnel design specifications, and other relevant information. The in-situ stress of the surrounding rock is then calculated based on the surrounding rock grade and actual site conditions. If groundwater information is detected in the surrounding rock, the impact of groundwater on the surrounding rock strength must also be considered.

[0088] The above describes the method for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock in an embodiment of the present application. The following describes the device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock in an embodiment of the present application.

[0089] Please refer to FIG2 , which illustrates an embodiment of a device for identifying full-section excavation parameters for a large-section tunnel with broken surrounding rock. The device may include:

[0090] Establishing unit 201, for establishing a three-dimensional finite element model based on the cross-section design of the tunnel;

[0091] A simulation unit 202 is used to perform numerical simulation based on multiple sets of blasting design parameters and a three-dimensional finite element model to obtain blasting quality parameters;

[0092] A selection unit 203 is configured to select a group of blasting design parameters that is closest to a preset quality parameter from among multiple groups of blasting design parameters as a target blasting design parameter, where the preset quality parameter is an acceptance grade standard for the tunnel;

[0093] An imaging unit 204 is configured to obtain first thermal imaging information of a first hot spot on the surface to be blasted, wherein the first hot spot is the same heat source generating unit arranged at the blast hole position actually measured and selected on the surface to be blasted based on the target blasting design parameters before the blast hole arrangement;

[0094] The calibration unit 205 is configured to calibrate the actual hole spacing parameters based on the first thermal imaging information and the target blasting design parameters.

[0095] According to the full-section excavation parameter identification device for a large-section tunnel with broken surrounding rock provided by the above-mentioned embodiment, a three-dimensional finite element model is established based on the blasting section design of the tunnel; simulation is performed based on multiple groups of blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters; among the multiple groups of blasting design parameters, the group closest to the preset quality parameters is selected as the target blasting design parameters, and the preset quality parameters are the acceptance grade standards of the tunnel; first thermal imaging information of the first hot spot of the surface to be blasted is obtained, wherein the first hot spot is the same heat source generating unit arranged at the blast hole point selected by actual measurement on the surface to be blasted based on the target blasting design parameters before the blast holes are arranged; and the actual hole spacing parameters are calibrated based on the first thermal imaging information and the target blasting design parameters. The method provided in the embodiment of the present application can establish a three-dimensional finite element model based on the actual situation of the tunnel, and use multiple sets of blasting design parameters to perform blasting simulation on the above three-dimensional finite element model, so as to obtain different blasting quality parameters, and select the optimal blasting design parameters as the target blasting design parameters, thereby improving the accuracy of the selection of blasting design parameters. On-site construction personnel arrange the heat source generating units with the same arrangement of blasthole points selected based on actual measurements on the surface to be blasted according to the above target blasting design parameters, so as to obtain a thermal map containing the blasthole point information of all blasting blastholes on the section to be blasted, and compare the above thermal map with the above target blasting design parameters. Based on the spacing of the thermal imaging of each blasting blasthole, the blasting blastholes with deviations in the blasthole point arrangement can be quickly and accurately identified, thereby solving the problem of inaccurate blasthole point arrangement in tunnel excavation projects.

[0096] FIG2 above describes the full-section excavation parameter identification device for a large-section tunnel with broken surrounding rock in an embodiment of the present application from the perspective of modular functional entities. The following describes the full-section excavation parameter identification device for a large-section tunnel with broken surrounding rock in an embodiment of the present application in detail from the perspective of hardware processing. Referring to FIG3 , an embodiment of the full-section excavation parameter identification device 300 for a large-section tunnel with broken surrounding rock in an embodiment of the present application includes:

[0097] Input device 301, output device 302, processor 303, and memory 304. There may be one or more processors 303, and FIG3 shows one processor 303 as an example. In some embodiments of the present application, input device 301, output device 302, processor 303, and memory 304 may be connected via a bus or other means, and FIG3 shows a bus connection as an example.

[0098] Wherein, by calling the operation instructions stored in the memory 304, the processor 303 is used to execute the steps of the method as described in any one of the first aspects.

[0099] Please refer to FIG4 , which is a schematic diagram of an embodiment of an electronic device provided in an embodiment of the present application.

[0100] As shown in Figure 4, an embodiment of the present application provides an electronic device 400, including a memory 410, a processor 420, and a computer program 411 stored in the memory 410 and executable on the processor 420. When the processor 420 executes the computer program 411, the steps of the method described in any one of the first aspects are implemented.

[0101] During specific implementation, when the processor 420 executes the computer program 411 , any implementation method in the embodiment corresponding to FIG. 1 may be implemented.

[0102] Since the electronic device introduced in this embodiment is a device used to implement a system resource management device in the embodiment of the present application, based on the method introduced in the embodiment of the present application, technical personnel in this field can understand the specific implementation method of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application is no longer introduced in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of the present application falls within the scope of protection to be protected by this application.

[0103] Please refer to FIG5 , which is a schematic diagram of an embodiment of a computer-readable storage medium provided in an embodiment of the present application.

[0104] As shown in FIG5 , this embodiment provides a computer-readable storage medium 500 on which a computer program 511 is stored. When the computer program 511 is executed by a processor, the steps of the method described in any one of the first aspects are implemented.

[0105] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0106] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0107] The present application is described with reference to the flow chart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flow chart and / or block diagram and the combination of the process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one process or multiple processes and / or one box or multiple boxes of the flow chart.

[0108] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0110] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process in the method for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock as shown in the corresponding embodiment of Figure 1.

[0111] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0112] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0113] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0114] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0115] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0116] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0117] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, characterized in that: include: Establish a three-dimensional finite element model based on the blasting section design of the tunnel; Simulating based on the blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters; Selecting a group of blasting design parameters that is closest to a preset quality parameter from among the multiple groups of blasting design parameters as a target blasting design parameter, wherein the preset quality parameter is an acceptance grade standard of the tunnel; Acquire first thermal imaging information of a first hot spot on the surface to be blasted, where the first hot spot is the same heat source generating unit arranged at the blast hole point actually measured and selected on the surface to be blasted based on the target blasting design parameters before arranging the blast holes; Based on the first thermal imaging information and the target blasting design parameters, actual hole spacing parameters are calibrated.

2. The method according to claim 1, characterized in that Also includes: Collecting second thermal imaging information of a second hot spot of the surface to be blasted after the blasting holes are arranged, wherein the second hot spot is the same heat source generating unit arranged in the blasting holes after the blasting holes are arranged; Based on the second thermal imaging information and the target blasting design parameters, the actual aperture parameters are calibrated.

3. The method according to claim 2, characterized in that Based on the second thermal imaging information and the target blasting design parameters, calibrating the actual aperture parameters includes: determining a heat concentration range of each second hot spot based on the second thermal imaging information; Predicting the actual blast hole diameter of each actual blast hole after the blast hole arrangement based on the heat concentration range; The actual blast hole diameter is calibrated according to the target blasting design parameters.

4. The method according to claim 1, characterized in that The blasting section design includes groundwater information of the tunnel.

5. The method according to any one of claims 1 to 4, characterized in that The blasting quality parameters include average linear overbreak; The preset quality parameters include a preset linear overbreak amount.

6. The method according to any one of claims 1 to 4, characterized in that The blasting quality parameters also include local undercut amount; The preset quality parameters include a preset local underbreak amount.

7. The method according to claim 1, characterized in that The method of obtaining blasting quality parameters by numerical simulation based on multiple groups of blasting design parameters and the three-dimensional finite element model includes: Determining the surrounding rock grade based on the rock mass properties of the tunnel; determining surrounding rock in-situ stress based on the surrounding rock grade; The blasting quality parameters are obtained by performing numerical simulation based on the surrounding rock in-situ stress.

8. A device for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock, comprising: Establish units for building three-dimensional finite element models based on tunnel cross-section design and blasting design; A simulation unit, used for performing simulation based on multiple groups of blasting design parameters and the three-dimensional finite element model to obtain blasting quality parameters; A selection unit, used for selecting a group of blasting design parameters that is closest to a preset quality parameter from among the multiple groups of blasting design parameters as a target blasting design parameter, wherein the preset quality parameter is an acceptance grade standard of the tunnel; An imaging unit, used to obtain first thermal imaging information of a first hot spot on the surface to be blasted, wherein the first hot spot is the same heat source generating unit arranged at the blast hole point actually measured and selected on the surface to be blasted based on the target blasting design parameters before the blast hole arrangement; A calibration unit is used to calibrate actual hole spacing parameters based on the first thermal imaging information and the target blasting design parameters.

9. An electronic device, comprising: A memory and a processor, characterized in that the processor is used to implement the steps of the method for identifying full-section excavation parameters of a large-section tunnel with broken surrounding rock as described in any one of claims 1-7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it realizes the full-section excavation parameter identification of a large-section tunnel with broken surrounding rock as described in any one of claims 1 to 7.

Images