Shield tunnel composite stratum soft and hard interface distribution sensing method and system

Abstract

The invention provides a shield tunnel composite stratum soft and hard interface distribution sensing method and system, and relates to the technical field of shield and TBM engineering, and the method comprises the steps: obtaining a vibration signal generated by the rotation of a cutterhead through a plurality of arranged sensors; key time difference information in the preprocessed vibration signals is extracted; the method comprises the following steps: constructing a three-dimensional space coordinate system according to layout space coordinate information of multiple sensors, setting a space area to be positioned by a vibration source, assuming that a transmission process of a vibration signal from the vibration source to the sensors meets constant-speed propagation, and positioning the vibration target by a multi-sensor vibration target positioning algorithm based on three-point positioning based on key time difference information. A stratum soft and hard interface positioning line forming a tunneling section is depicted, so that a stratum soft and hard three-dimensional interface is positioned, and a stratum soft and hard interface distribution form is obtained; according to the invention, formation soft and hard interface uninterrupted imaging is realized, and the two-dimensional discontinuity of geological section acquisition in a drilling method is effectively avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of shield and TBM engineering, and specifically to a method and system for sensing the distribution of hard and soft interfaces in a composite stratum of a shield tunnel. Background Art

[0002] The statements in this section merely provide background technical information related to the present disclosure and do not necessarily constitute prior art.

[0003] In recent years, with the rapid development of urban infrastructure construction, more and more underground space is being developed. The shield method has been widely used in tunnel construction due to its advantages of small disturbance to the surrounding environment and no impact on ground traffic during construction. During the shield construction process, the basic geological conditions and engineering geological conditions have a significant impact on construction efficiency and cutter head and tool wear. The strata where the shield is located can generally be divided into homogeneous strata and composite strata. Homogeneous strata refer to those composed of a single soft soil stratum, but strictly speaking, there is no such thing as a completely homogeneous stratum in reality. In contrast, composite strata generally refer to the combination of different strata above and below the excavation section.

[0004] Due to the large difference in the geomechanical properties of the composite stratum, it is difficult to control the tunneling parameters, which is likely to cause poor shield tunneling attitude during shield construction, and in severe cases, it will also cause local damage to the segment and surface subsidence, seriously affecting the construction progress and safety.

[0005] However, the existing detection of the stratum interface mainly relies on drilling. Affected by the limitations of drilling itself, the geological information obtained is significantly discontinuous. The geological profile is a two-dimensional interface along the tunneling direction, and it is impossible to accurately obtain the distribution of the soft interface of the stratum at the excavation face. Summary of the Invention

[0006] To solve the above problems, the present disclosure proposes a method and system for sensing the distribution of hard and soft interfaces in a composite stratum of a shield tunnel. By establishing a method for locating the hard and soft interfaces in a composite stratum of a shield tunnel, it is possible to avoid the two-dimensional discontinuity of the geological profile obtained by the drilling method and achieve accurate sensing of the distribution of the hard and soft interfaces of the stratum.

[0007] According to some embodiments, the present disclosure adopts the following technical solutions:

[0008] A method for sensing the distribution of hard and soft interfaces in a composite stratum of a shield tunnel, comprising:

[0009] Acquiring the vibration signals generated by the rotation of the cutter head through a plurality of arranged sensors, and preprocessing the vibration signals;

[0010] Extracting the key time difference information from the preprocessed vibration signals;

[0011] According to the layout spatial coordinate information of multiple sensors, a three-dimensional space coordinate system is constructed, a spatial area where the vibration source is to be located is set, it is assumed that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through a multi-sensor vibration target localization algorithm based on three-point positioning, the positioning line of the hard and soft interface of the formation in the tunneling section is depicted, so as to locate the three-dimensional hard and soft interface of the formation and obtain the distribution pattern of the hard and soft interface of the formation.

[0012] According to some embodiments, the present disclosure adopts the following technical solutions:

[0013] A perception system for the distribution of the hard and soft interfaces of a shield tunnel composite formation, comprising:

[0014] A data acquisition module, configured to acquire the vibration signals generated by the cutter head rotation through the arranged multiple sensors and preprocess the vibration signals;

[0015] A data extraction module, configured to extract the key time difference information in the preprocessed vibration signals;

[0016] A positioning module, configured to construct a three-dimensional space coordinate system according to the layout spatial coordinate information of multiple sensors, set a spatial area where the vibration source is to be located, assume that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through a multi-sensor vibration target localization algorithm based on three-point positioning, depict the positioning line of the hard and soft interface of the formation in the tunneling section, so as to locate the three-dimensional hard and soft interface of the formation and obtain the distribution pattern of the hard and soft interface of the formation.

[0017] According to some embodiments, the present disclosure adopts the following technical solutions:

[0018] A non-transitory computer-readable storage medium, which is used to store computer instructions, and when the computer instructions are executed by a processor, the described method for perceiving the distribution of the hard and soft interfaces of a shield tunnel composite formation is implemented.

[0019] According to some embodiments, the present disclosure adopts the following technical solutions:

[0020] An electronic device, comprising: a processor, a memory, and a computer program; wherein, the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device runs, the processor executes the computer program stored in the memory, so that the electronic device executes the described method for perceiving the distribution of the hard and soft interfaces of a shield tunnel composite formation.

[0021] Compared with the prior art, the beneficial effects of the present disclosure are:

[0022] A method for sensing the distribution of hard and soft interfaces in a composite stratum of a shield tunnel according to the present disclosure adopts passive source positioning and identification based on cutter vibration information without adding additional active sources. Through the three-ring and six-diameter full-space layout of sensors and multi-point array reception, the vibration information of the cutting system can be obtained comprehensively and the signals are reliable. By implementing a multi-point continuous monitoring mode with sensors arranged at the front shield partition, continuous imaging of the hard and soft interfaces of the stratum is realized, effectively avoiding the two-dimensional discontinuity in obtaining the geological profile in the drilling method.

[0023] A method for sensing the distribution of hard and soft interfaces in a composite stratum of a shield tunnel according to the present disclosure realizes multi-source positioning fitting of key vibration points and continuous imaging of the hard and soft interfaces of the composite stratum through a multi-point continuous monitoring mode with sensors, effectively avoiding the two-dimensional discontinuity in obtaining the geological profile in the drilling method. Further, based on the existing massive stratum interface positioning information and with the help of big data analysis algorithms, the general situation of the distribution of hard and soft interfaces in the composite stratum in front of the excavation face is deduced, providing a reference for optimizing the shield tunneling parameters. Brief Description of the Drawings

[0024] The attached drawings forming a part of the present disclosure are used to provide a further understanding of the present disclosure. The schematic embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure.

[0025] Figure 1 Schematic diagram of the multi-sensor three-ring and six-diameter layout method for an embodiment of the present disclosure;

[0026] Figure 2 Schematic diagram of the vibration source spatial positioning algorithm for an embodiment of the present disclosure. Detailed Description of the Embodiments

[0027] The present disclosure will be further described below in conjunction with the drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide a further description of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Embodiment 1

[0031] In an embodiment of the present disclosure, a method for perceiving the distribution of the hard-soft interface in a shield tunnel composite stratum is provided, including the following steps:

[0032] Step 1: Obtain the vibration signals generated by the rotation of the cutterhead through the arranged multi-sensors, and preprocess the vibration signals.

[0033] Step 2: Extract the key time difference information from the preprocessed vibration signals.

[0034] Step 3: According to the spatial coordinate information of the arrangement of the multi-sensors, construct a three-dimensional space coordinate system, set the spatial region where the vibration source is to be located, assume that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through the multi-sensor vibration target positioning algorithm based on three-point positioning, depict and form the positioning line of the hard-soft interface of the stratum in the tunneling section, so as to locate the three-dimensional hard-soft interface of the stratum and obtain the distribution pattern of the hard-soft interface of the stratum.

[0035] As an embodiment, for the method for perceiving the distribution of the hard-soft interface in a shield tunnel composite stratum of the present disclosure, the basic principle of the method is to improve the positioning method of the hard-soft interface of the shield tunnel composite stratum based on the difference in the characteristics of the vibration signals generated by the shield cutter cutting the rock and soil layers, so as to obtain the distribution pattern of the hard-soft interface of the tunnel composite stratum. The positioning method of the hard-soft interface of the shield tunnel composite stratum of the present disclosure is divided into three parts: one is the signal reception mode, the second is the sensor arrangement scheme, and the third is the hard-soft interface spatial positioning algorithm.

[0036] Furthermore, in the vibration signal reception mode of the positioning method of the hard-soft interface of the shield tunnel composite stratum of the present disclosure, it is to preliminarily determine the feasibility of using the vibration signal as a criterion for the hard-soft interface through the vibration response of the "roller cutter - cutterhead - front shield bulkhead" cutting system; this feasibility has been verified through modal experiments, that is, before the shield machine is lowered into the well, a shaker is used to apply simulated vibration at the cutter position, and the vibration information of the front shield bulkhead is monitored through vibration sensors, and it is found that the signal amplitude and frequency characteristics are consistent with the characteristics of the signal excited by the shaker.

[0037] Reveal the propagation law of the vibration signals of the cutting system, as Figure 1 shown, the middle metal device is the drive bearing of the shield machine, and there are steel plates with a certain thickness around it. Verify the effectiveness of the vibration signal transmission from the roller cutter to the cutterhead and then to the front shield bulkhead, clarify the significance of the difference in the vibration response of the roller cutter when encountering a stratum with uneven hardness, and based on the on-site spatial selection of the shield cutting system, thus form a signal reception mode of multi-point array at the position of the front shield bulkhead, that is, arrange sensors at multiple points and arrange them in a two-dimensional space array.

[0038] Furthermore, for the layout of multi-sensors, in order to achieve full-space monitoring of the vibration information of the cutting system, based on the spatial coordinate information of the front shield bulkhead, a full-coverage three-ring and six-diameter sensor layout scheme is proposed, that is, with the center of the front shield bulkhead as the center of the circle, sensors are arranged at three different circumferential distances. According to the radius of the front shield bulkhead (circular), the radius is divided into four parts from the center of the circle to the edge. The specific divided distance depends on whether there are obstacles (the structure of the shield machine itself) on the bulkhead, and three different radii are flexibly selected to form three rings, that is, three circumferences, as Figure 1 The three circumferences represented by the three dotted lines shown.

[0039] Furthermore, six different radial distances are selected in the three circumferential directions to meet the full-space sensor layout. The front shield bulkhead is the frontmost position inside the shield machine that people can reach. Further forward is the soil bin, and the front of the soil bin is the cutter head. The function of the front shield bulkhead is a retaining wall. As Figure 1 Shown, looking counterclockwise from the left, A4 is located at the first radial, A2 and A3 are located at the second radial, A1 is located at the third radial, B1 is located at the fourth... B4 is located at the sixth radial. The angle of each radial also depends on whether there are obstacles on the front shield bulkhead, and it can be determined according to the actual situation on site.

[0040] As Figure 1 Shown, the gray area is the front shield bulkhead, understood as a steel plate. The middle metal mechanical structure is the drive bearing of the shield machine, which is used to drive the front cutter head to rotate. The slag outlet is the position where the soil cut by the cutter is transported outwards and is transported through the slag outlet. The black circles represent the layout positions of the sensors, that is, A1~A4 represent four sensors arranged on the left side of the disc, and B1~B4 are the installation positions of the four sensors on the right side.

[0041] As an embodiment, the multi-sensors adopt a variable-frequency vibration measurement device, and the speed is set to be four gears adjustable to meet the signal requirements of different frequencies. High-resolution acquisition can adapt to the environment of shield tunnel construction.

[0042] Furthermore, after the layout of the multi-sensors is completed, the multi-sensors collect the vibration signals generated by the rotation of the cutter head, perform wavelet analysis and filtering on the vibration signals, and extract key time information. Through the multi-sensor vibration target positioning algorithm based on three-point positioning, target positioning is achieved. Specifically:

[0043] According to the spatial coordinate information of the layout of the multi-sensors, with the center of the front shield bulkhead as the origin, a three-dimensional space rectangular coordinate system is constructed. Based on the key time difference information in the vibration signals received by the sensors, a multi-sensor vibration target positioning algorithm based on three-point positioning is established. This algorithm needs to preset all the sensor spatial coordinate information before operation, set the spatial area where the vibration source is to be located, and assume that the signal satisfies uniform propagation during the transmission process from the vibration source to the sensor. The formed coordinate algorithm is as shown in formula (1);

[0044]

[0045] Wherein, x and y are the spatial coordinates of the vibration source, x i and y i are the spatial coordinates of the sensor, Δt ij is the time difference, and v is the transmission speed from the vibration source to the sensor.

[0046] The formula of the multi-sensor vibration target positioning algorithm based on three-point positioning consists of three groups of hyperbolic equations, and the spatial position of the vibration source is determined by the intersection points of the three groups of hyperbolas in space, such as Figure 2 describes the relationship between the time difference of wave propagation and geometric positioning. Based on the time difference of the signals received by different sensors, the distance difference is further calculated. In a two-dimensional space, the time difference between two sensors forms a hyperbola, because the locus of points with a constant distance difference to two fixed points is a hyperbola. So if there are only two sensors, the possible vibration positions are on this hyperbola. However, in practical applications, at least three sensors are required to determine the intersection point, that is, the specific position of the vibration. Figure 2 In Figure 2 , N1, N2, and N3 are the positions of three sensors. The time difference between sensors N1 and N2 forms hyperbola 1. Similarly, N1 and N3 form hyperbola 2, and N3 and N2 form hyperbola 3. According to the intersection points of each group of hyperbolas, the emission position of the vibration (i.e., the vibration source S) can be determined.

[0047] Furthermore, the spatial position information of multiple vibration sources can be obtained at the same time of vibration signal acquisition. By multi-point characterization, the positioning line of the formation soft-hard interface of the tunneling section can be formed. Using a large amount of data, a large number of points can be located. Using multiple points to form a line and finally form a surface. However, this process is generated multiple times. Specifically, when the shield machine advances to a certain position, a line (soft-hard interface demarcation line) on this excavation surface will be located. The shield machine is constantly advancing. When it reaches each surface, there will be a demarcation line. Then N demarcation lines will form a three-dimensional surface. As the shield machine continues to advance, the demarcation lines on each excavation surface form a three-dimensional surface, and the positioning line of the formation soft-hard interface of each tunneling section can be continuously characterized. During data processing and imaging, low-pass filtering is used to remove high-frequency noise (such as mechanical vibration noise) and power frequency interference, extract the peak factor, root mean square value, kurtosis in the time domain, and the main frequency component and frequency band energy ratio in the frequency domain. Combining wavelet transform to locate the mutation points of the vibration signal in time and frequency, and identifying the instantaneous impact events corresponding to the formation boundary, the three-dimensional soft-hard interface of the formation can be accurately located continuously, so as to obtain the current distribution pattern of the three-dimensional soft-hard interface of the formation.

[0048] Embodiment 2

[0049] In one embodiment of the present disclosure, a system for perceiving the distribution of hard and soft interfaces in a composite formation of a shield tunnel is provided, including a data acquisition module, a data extraction module, and a positioning module, where:

[0050] The data acquisition module is used to acquire the vibration signals generated by the rotation of the cutter head through the deployed multi-sensors and preprocess the vibration signals.

[0051] The data extraction module is used to extract the key time difference information in the preprocessed vibration signals.

[0052] The positioning module is used to construct a three-dimensional space coordinate system according to the deployed spatial coordinate information of the multi-sensors, set the spatial area where the vibration source is to be located, assume that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through the multi-sensor vibration target positioning algorithm based on three-point positioning, depict and form the positioning line of the hard and soft interfaces of the formation in the tunneling section, so as to locate the three-dimensional interfaces of the hard and soft formation and obtain the distribution pattern of the hard and soft interfaces of the formation.

[0053] As an embodiment, the data acquisition module includes the deployment of vibration sensors, the deployment and connection of data loggers, and the implementation of vibration data acquisition methods. Specifically:

[0054] First, sensors are deployed at a predetermined spatial position behind the front shield partition. A glue bonding agent is used as the coupling medium between the sensors and the partition to enhance the effectiveness of vibration signal transmission.

[0055] Secondly, data loggers are deployed in the middle shield part. The data loggers are powered by alternating current and are wired to the front vibration sensors to receive the vibration information transmitted by the sensors in real time.

[0056] During the normal tunneling process, the vibration signals generated by the rotation of the cutter head are collected by the vibration sensors in real time, and the original data is stored in the logger.

[0057] Furthermore, in the data extraction module, a data processing terminal is included. The original vibration signals collected by the sensors are transmitted to the data processing terminal, and wavelet analysis filtering is performed on the information to extract key features, thereby providing a basis for depicting the positioning line of the hard and soft interfaces of the formation in each tunneling section in the next step and further realizing the three-dimensional visualization of the hard and soft interfaces of the formation along the excavation axis direction.

[0058] Further, in the positioning module, a three-dimensional space coordinate system is constructed according to the layout space coordinate information of multiple sensors, a spatial area where the vibration source is to be located is set, it is assumed that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through the multi-sensor vibration target positioning algorithm based on three-point positioning, the positioning line of the hard and soft interface of the formation in the tunneling section is characterized, so as to locate the three-dimensional hard and soft interface of the formation and obtain the distribution form of the hard and soft interface of the formation.

[0059] Embodiment 3

[0060] In one embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, and the non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the method for perceiving the distribution of the hard and soft interfaces of the shield tunnel composite formation is implemented.

[0061] Embodiment 4

[0062] In one embodiment of the present disclosure, an electronic device is provided, including: a processor, a memory, and a computer program; wherein, the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device runs, the processor executes the computer program stored in the memory so that the electronic device executes the method for perceiving the distribution of the hard and soft interfaces of the shield tunnel composite formation.

[0063] The present disclosure is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and the combination of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0064] These computer program instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operation steps are executed on the computer or other programmable devices to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable devices provide steps for realizing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0065] Although the specific embodiments of the present disclosure have been described above in conjunction with the accompanying drawings, they are not intended to limit the scope of protection of the present disclosure. Those skilled in the art should understand that, based on the technical solutions of the present disclosure, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the scope of protection of the present disclosure.

Claims

1. A method for perceiving the distribution of the hard-soft interface in a composite stratum of a shield tunnel, characterized in that including: obtaining vibration signals generated by the rotation of the cutter head through arranged multi-sensors and preprocessing the vibration signals; extracting key time difference information from the preprocessed vibration signals; constructing a three-dimensional space coordinate system according to the arranged space coordinate information of the multi-sensors, setting the spatial region where the vibration source is to be located, assuming that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through the multi-sensor vibration target localization algorithm based on three-point positioning, depicting the positioning line of the formation soft-hard interface of the tunneling section, thereby positioning the three-dimensional soft-hard interface of the formation and obtaining the distribution pattern of the formation soft-hard interface.

2. The method for perceiving the distribution of hard and soft interfaces in a shield tunnel composite formation according to claim 1, characterized in that The arrangement method of the multi-sensors is multi-point arrangement, and is arranged in a two-dimensional space array mode, so that the signal reception is a multi-point array signal reception mode.

3. The method for perceiving the distribution of the hard-soft interface in the composite stratum of a shield tunnel according to claim 2, characterized in that, The arrangement method of the multi-sensors is as follows: performing full-space monitoring on the cutting cutter head of the shield, according to the space coordinate information of the front shield partition, adopting the multi-sensor arrangement method of three rings and six diameters, taking the center of the front shield partition as the center of the circle, arranging the sensors at three different circumferential distances, and selecting six different radial distances in three circumferential directions to realize the three-ring and six-diameter arrangement of the full-space multi-sensors.

4. The method for sensing the distribution of the hard and soft interface in the composite stratum of a shield tunnel according to claim 1, wherein By constructing a three-dimensional space coordinate system, based on the time difference information of the vibration signals received by the sensors, based on the multi-sensor vibration target localization algorithm based on three-point positioning, setting the space coordinate information of all sensors in advance, setting the spatial region where the vibration source is to be located, and assuming that the signal satisfies uniform propagation during the transmission process from the vibration source to the sensor, the formed coordinate formula is: where x and y are the spatial coordinates of the vibration source, x i and y i are the spatial coordinates of the sensor, and Δt ij is the time difference; v is the transmission speed from the vibration source to the sensor.

5. The method for perceiving the distribution of the hard-soft interface in the composite formation of a shield tunnel according to claim 1, wherein The formula of the multi-sensor vibration target localization algorithm based on three-point positioning consists of multiple groups of hyperbola equations, and the spatial position of the vibration source is determined by the intersection points of multiple groups of hyperbolas in space.

6. The method for perceiving the distribution of the hard-soft interface in the composite stratum of a shield tunnel according to claim 1, wherein At the same time of vibration signal acquisition, the spatial position information of multiple vibration sources is obtained, and the positioning line of the formation soft-hard interface of the tunneling section is formed by multi-point depiction.

7. A method for perceiving the distribution of hard and soft interfaces in a composite formation of a shield tunnel according to claim 1, characterized in that, The vibration signals adopt a continuous monitoring mode, continuously depicting the positioning line of the formation soft-hard interface of each tunneling section, and through data processing and imaging, continuously positioning the three-dimensional soft-hard interface of the formation; based on the obtained distribution information of the formation soft-hard interface, inferring the distribution pattern of the soft-hard interface of the unexcavated part.

8. A perception system for the distribution of the hard-soft interface in a composite stratum of a shield tunnel, characterized in that, including: a data acquisition module for obtaining vibration signals generated by the rotation of the cutter head through arranged multi-sensors and preprocessing the vibration signals; a data extraction module for extracting key time difference information from the preprocessed vibration signals; a positioning module for constructing a three-dimensional space coordinate system according to the arranged space coordinate information of the multi-sensors, setting the spatial region where the vibration source is to be located, assuming that the transmission process of the vibration signal from the vibration source to the sensor satisfies uniform propagation, and based on the key time difference information, through the multi-sensor vibration target localization algorithm based on three-point positioning, depicting the positioning line of the formation soft-hard interface of the tunneling section, thereby positioning the three-dimensional soft-hard interface of the formation and obtaining the distribution pattern of the formation soft-hard interface.

9. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed by a processor, a method for perceiving the distribution of the soft-hard interface of a shield tunnel composite formation as described in any one of claims 1-7 is implemented.

10. An electronic device, characterized in that, including: A processor, a memory, and a computer program; wherein, the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device runs, the processor executes the computer program stored in the memory so that the electronic device executes a method for perceiving the distribution of the hard and soft interfaces in a shield tunnel composite stratum as described in any one of claims 1-7.

Images