An apparatus and method for simulating and analyzing the seismic performance of deep underground tunnels

Abstract

The present invention discloses a device and an analysis method for simulating and analyzing the seismic performance of deep underground tunnels, aiming to solve the technical problems that the current device for simulating and analyzing the seismic performance of deep underground tunnels has relatively low accuracy in evaluating the seismic performance of deep underground tunnels, and it is inconvenient to accurately and quickly position the deep underground tunnel model on the device for simulating and analyzing the seismic performance. Its structure includes an installation frame, a seismic simulation mechanism, and a computer control mechanism. The seismic simulation mechanism includes a six-degree-of-freedom vibration mechanism, a support mechanism, and a model placement mechanism. The six-degree-of-freedom vibration mechanism includes two groups of first hydraulic rod mechanisms, and one group of the first hydraulic rod mechanisms is respectively connected to the bottom of the installation frame and the carrier table through a first mounting plate and a second mounting plate. The present invention can simulate the movement of seismic waves in three directions, thereby more realistically reproducing the impact of earthquakes on deep underground tunnels, and helping to more accurately evaluate the seismic performance of deep underground tunnels.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic simulation analysis of tunnels, and specifically to an apparatus and method for simulating and analyzing the seismic performance of deep underground tunnels. Background Art

[0002] The shaking table model test scales down the prototype according to the similarity theory. By measuring the physical changes and laws of deep underground tunnels under seismic action on the scaled model, the failure modes of deep underground tunnels are studied. In order to understand the state of deep underground tunnels or other structures during earthquakes, seismic simulation and testing are realized, which promotes the development and wide application of seismic platforms, enabling the general public to better understand the hazards caused by earthquakes. At the same time, in order to be able to test the damage capabilities of earthquakes of different magnitudes, there is an urgent need for an apparatus for simulating and analyzing the seismic performance of deep underground tunnels.

[0003] In the process of implementing the invention, the inventor found that at least the following problems in the prior art have not been solved. During use, the accuracy of evaluating the seismic performance of deep underground tunnels by traditional apparatuses for simulating and analyzing the seismic performance of deep underground tunnels is relatively low, and it is not convenient to accurately and quickly position the deep underground tunnel model on the apparatus for simulating and analyzing the seismic performance. Therefore, new technical solutions need to be designed to solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to provide an apparatus and method for simulating and analyzing the seismic performance of deep underground tunnels, so as to solve the technical problems that the accuracy of evaluating the seismic performance of deep underground tunnels by the current apparatus for simulating and analyzing the seismic performance of deep underground tunnels is relatively low, and it is not convenient to accurately and quickly position the deep underground tunnel model on the apparatus for simulating and analyzing the seismic performance.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An apparatus and method for simulating and analyzing the seismic performance of deep underground tunnels, including an installation frame, a seismic simulation mechanism, and a computer control mechanism. The seismic simulation mechanism includes a six-degree-of-freedom vibration mechanism, a support mechanism, and a model placement mechanism. The six-degree-of-freedom vibration mechanism includes two groups of first hydraulic rod mechanisms. One group of the first hydraulic rod mechanisms is respectively connected to the bottom of the installation frame and the stage through a first mounting plate and a second mounting plate, and the other group of the first hydraulic rod mechanisms is connected to the side of the installation frame and the stage through a third mounting plate and a fourth mounting plate. The model placement mechanism is connected to the stage through four support columns. A geophone is installed at the middle of the stage. Four sides of the model placement mechanism are each connected to a model limiting mechanism through a second hydraulic rod mechanism. A track groove is provided on one side of the support mechanism. A clamping plate is connected in the track groove through a bidirectional threaded rod. A camera mechanism is installed between the clamping plates. A knob is installed on one side of the support mechanism.

[0006] As a preferred embodiment of the present invention, a seismic wave signal generator is fixedly connected to the middle of the installation frame, and the geophone and the seismic wave signal generator are electrically connected to the computer control mechanism.

[0007] As a preferred embodiment of the present invention, one end of the first mounting plate is fixedly connected to the four corners at the bottom of the installation frame, one end of a set of the first hydraulic rod mechanisms is rotatably connected to the other end of the first mounting plate, one end of the second mounting plate is fixedly connected to the bottom of the stage and corresponds to the position of the first mounting plate, and the other end of a set of the first hydraulic rod mechanisms is rotatably connected to the other end of the second mounting plate.

[0008] As a preferred embodiment of the present invention, one end of the third mounting plate is fixedly connected to the inner side surface of the installation frame, one side of the fourth mounting plate is fixedly connected to the side surface of the stage, one end of another set of the first hydraulic rod mechanisms is rotatably connected to the other end of the third mounting plate, and the other end of another set of the first hydraulic rod mechanisms is rotatably connected to the other end of the fourth mounting plate.

[0009] As a preferred embodiment of the present invention, one end of the four support columns is fixedly connected to the four corners of the upper surface of the stage, and the other end of the four support columns is fixedly connected to the four corners of the bottom of the model placement mechanism.

[0010] As a preferred embodiment of the present invention, one end of the second hydraulic rod mechanism is fixedly connected to the outer surface of the model placement mechanism, the other end of the second hydraulic rod mechanism is fixedly connected to one side of the model limiting mechanism, the model limiting mechanism is slidably connected to the four circumferences inside the model placement mechanism, and a tunnel model is clamped between the four model limiting mechanisms.

[0011] As a preferred embodiment of the present invention, both the first hydraulic rod mechanism and the second hydraulic rod mechanism are connected to the hydraulic supply mechanism through pipelines.

[0012] As a preferred embodiment of the present invention, one end of the support mechanism is fixedly connected to one side outside the installation frame, both ends of the bidirectional threaded rod are rotatably connected to the inner wall of the track groove, one end of the knob is fixedly connected to one end of the bidirectional threaded rod, and one end of the clamping plate is slidably connected to the inner wall of the track groove and is connected to the outside of the bidirectional threaded rod.

[0013] As a preferred embodiment of the present invention, for the analysis method of the deep underground tunnel seismic performance simulation analysis device, the analysis method steps are as follows:

[0014] S1. First, place the deep underground tunnel model in the model placement mechanism. Then, simultaneously drive the four model limiting mechanisms to move by the four second hydraulic rod mechanisms, so that the deep underground tunnel model is in the middle of the model placement mechanism. Then, simultaneously drive the four model limiting mechanisms to reset by the four second hydraulic rod mechanisms;

[0015] S2. Then, place the camera mechanism in the middle of the support mechanism. Then, rotate the knob, so that the knob drives the bidirectional threaded lead screw to rotate, thereby clamping and fixing the camera mechanism by the two clamping plates;

[0016] S3. Then, the computer control mechanism issues an earthquake mode operation instruction, and then sends an earthquake command signal to the six-degree-of-freedom vibration mechanism through the seismic wave signal generator, so that the six-degree-of-freedom vibration mechanism makes the stage vibrate automatically;

[0017] S4. The seismic detector will monitor the vibration wave of the stage, and the camera mechanism will monitor the displacement of the deep underground tunnel model, and transmit the monitored information to the computer control mechanism;

[0018] S5. Then, adjust the amplitude received by the deep underground tunnel model according to the need through the computer control mechanism and the seismic wave signal generator, and the computer control mechanism records and analyzes the real-time data of the deep underground tunnel model under different earthquake intensities.

[0019] As a preferred embodiment of the present invention,

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The present invention can simulate the movement of seismic waves in three directions, thus more realistically reproducing the impact of earthquakes on deep underground tunnels, helping to more accurately evaluate the seismic performance of deep underground tunnels, and being able to help understand the scientific mechanism of tunnel stability, and providing important guidance in actual construction to ensure the long-term stability and safety of tunnels;

[0022] Moreover, through the camera mechanism, the displacement of the deep underground tunnel during the simulation experiment can be detected in real time, improving the accuracy of the data in the process of simulating and analyzing the seismic performance of the deep underground tunnel by the simulation analysis device;

[0023] Through the second hydraulic rod mechanism and the model limiting mechanism, the position of the deep underground tunnel model can be restricted according to its size, so that the deep underground tunnel model can be accurately placed in the middle of the stage, avoiding the position deviation of the deep underground tunnel model on the stage, which may affect the data during subsequent detection, and improving the convenience of positioning the deep underground tunnel model on the analysis device. Description of the Drawings

[0024] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a side schematic diagram of the present invention;

[0027] Figure 3 is a top schematic diagram of the present invention;

[0028] In the figure: 1. Installation frame; 11. First hydraulic rod mechanism; 12. First mounting plate; 13. Second mounting plate; 14. Carrier table; 15. Third mounting plate; 16. Fourth mounting plate; 17. Support column; 18. Seismic detector; 19. Hydraulic liquid supply mechanism;

[0029] 2. Support mechanism; 21. Track groove; 22. Bidirectional threaded rod; 23. Clamping plate; 24. Camera mechanism; 25. Knob;

[0030] 3. Model placement mechanism; 31. Second hydraulic rod mechanism; 32. Model limiting mechanism;

[0031] 4. Seismic wave signal generator; 41. Computer control mechanism. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] Embodiment 1: A device and analysis method for simulating and analyzing the seismic performance of deep underground tunnels, see Figures 1 to 3, including an installation frame 1, a seismic simulation mechanism, and a computer control mechanism 41. The seismic simulation mechanism includes a six-degree-of-freedom vibration mechanism, a support mechanism 2, and a model placement mechanism 3. The six-degree-of-freedom vibration mechanism includes two groups of first hydraulic rod mechanisms 11. One group of the first hydraulic rod mechanisms 11 is respectively connected to the bottom of the installation frame 1 and the stage 14 through a first mounting plate 12 and a second mounting plate 13. The other group of the first hydraulic rod mechanisms 11 is connected to the side of the installation frame 1 and the stage 14 through a third mounting plate 15 and a fourth mounting plate 16. One end of the first mounting plate 12 is fixedly connected to the four corners of the bottom of the installation frame 1. One end of one group of the first hydraulic rod mechanisms 11 is rotatably connected to the other end of the first mounting plate 12. One end of the second mounting plate 13 is fixedly connected to the bottom of the stage 14 and corresponds to the position of the first mounting plate 12. The other end of one group of the first hydraulic rod mechanisms 11 is rotatably connected to the other end of the second mounting plate 13. One end of the third mounting plate 15 is fixedly connected to the inner side of the installation frame 1. One side of the fourth mounting plate 16 is fixedly connected to the side of the stage 14. One end of the other group of the first hydraulic rod mechanisms 11 is rotatably connected to the other end of the third mounting plate 15. The other end of the other group of the first hydraulic rod mechanisms 11 is rotatably connected to the other end of the fourth mounting plate 16. It can simulate the movement of seismic waves in three directions (X, Y, Z), thus more realistically reproducing the impact of earthquakes on deep underground tunnels, helping to more accurately evaluate the seismic performance of deep underground tunnels, and being able to help understand the scientific mechanism of tunnel stability and provide important guidance in actual construction to ensure the long-term stability and safety of the tunnels;

[0035] The model placement mechanism 3 is connected to the stage 14 through four support columns 17. One end of the four support columns 17 is fixedly connected to the four corners of the upper surface of the stage 14. The other end of the four support columns 17 is fixedly connected to the four corners of the bottom of the model placement mechanism 3. Four sides of the model placement mechanism 3 are each connected to a model limiting mechanism 32 through a second hydraulic rod mechanism 31. One end of the second hydraulic rod mechanism 31 is fixedly connected to the outer surface of the model placement mechanism 3. The other end of the second hydraulic rod mechanism 31 is fixedly connected to one side of the model limiting mechanism 32. The model limiting mechanism 32 is slidably connected to the four sides inside the model placement mechanism 3. A tunnel model is clamped between the four model limiting mechanisms 32. Through the second hydraulic rod mechanism 31 and the model limiting mechanism 32, the position of the deep underground tunnel model can be restricted according to its size, so that the deep underground tunnel model can be accurately placed in the middle of the stage 14, avoiding the position deviation of the deep underground tunnel model on the stage 14, which may affect the data during subsequent detection, and improving the convenience of positioning the deep underground tunnel model on the analysis device;

[0036] One side of the support mechanism 2 is provided with a track groove 21. Inside the track groove 21, a clamping plate 23 is connected by a bidirectional threaded rod 22. An imaging mechanism 24 is installed between the clamping plates 23. One side of the support mechanism 2 is provided with a knob 25. One end of the support mechanism 2 is fixedly connected to one side outside the installation frame 1. Both ends of the bidirectional threaded rod 22 are rotatably connected to the inner wall of the track groove 21. One end of the knob 25 is fixedly connected to one end of the bidirectional threaded rod 22. One end of the clamping plate 23 is slidably connected to the inner wall of the track groove 21 and is connected to the outside of the bidirectional threaded rod 22. Through the imaging mechanism 24, the displacement of the deep underground tunnel during the simulation experiment under the earthquake can be detected in real time, improving the accuracy of the data during the simulation analysis of the seismic performance of the deep underground tunnel by the simulation analysis device.

[0037] Specifically, refer to Figure 1 : A seismic wave signal generator 4 is fixedly connected to the middle of the installation frame 1. The geophone 18 and the seismic wave signal generator 4 are electrically connected to the computer control mechanism 41. A geophone 18 is installed in the middle of the carrier table 14. The computer control mechanism 41 can output electrical signals from the geophone 18 and the seismic wave signal generator 4. After being processed by circuits such as amplification and filtering, finally, seismic waveforms for recording or analysis are output.

[0038] Furthermore, refer to Figure 1 , both the first hydraulic rod mechanism 11 and the second hydraulic rod mechanism 31 are connected to the hydraulic supply mechanism 19 through pipelines, enabling the hydraulic supply mechanism 19 to control the operation of the first hydraulic rod mechanism 11 and the second hydraulic rod mechanism 31.

[0039] The analysis method of the deep underground tunnel seismic performance simulation analysis device is as follows:

[0040] S1. First, place the deep underground tunnel model in the model placement mechanism 3. Then, simultaneously drive the four model limiting mechanisms 32 to move by the four second hydraulic rod mechanisms 31, so that the deep underground tunnel model is in the middle of the model placement mechanism 3. Then, simultaneously drive the four model limiting mechanisms 32 to reset by the four second hydraulic rod mechanisms 31;

[0041] S2. Then, place the imaging mechanism 24 in the middle of the support mechanism 2. Then, rotate the knob 25, so that the knob 25 drives the bidirectional threaded rod to rotate, thereby clamping and fixing the imaging mechanism 24 by the two clamping plates 23;

[0042] S3. Then, the computer control mechanism 41 issues an operation instruction for the earthquake mode, and then sends an instruction signal for the earthquake to the six-degree-of-freedom vibration mechanism through the seismic wave signal generator 4, so that the six-degree-of-freedom vibration mechanism makes the stage 14 vibrate automatically;

[0043] S4. The seismograph 18 monitors the vibration wave of the stage 14, and the camera mechanism 24 monitors the displacement of the deep underground tunnel model, and conveys the monitored information to the computer control mechanism 41;

[0044] S5. Then, according to the need, the computer control mechanism 41 and the seismic wave signal generator 4 adjust the amplitude received by the deep underground tunnel model, and the computer control mechanism 41 records and analyzes the real-time data of the deep underground tunnel model under different earthquake intensities.

[0045] It should be noted that the seismograph 18 includes a measurement module: responsible for sensing the vibration generated by ground motion; a conversion module: converting the vibration signal into an electrical signal; an output module: outputting the electrical signal, and after being processed by circuits such as amplification and filtering, finally outputting the seismic waveform for recording or analysis;

[0046] The seismic wave signal generator 4 includes a signal generation module: generating a low-frequency sine oscillation signal through the master oscillator stage, the signal is amplified by a voltage amplifier to reach the required voltage output amplitude, and then the voltage can be directly output through the output attenuator, and the output voltage size can be adjusted by the master oscillator output adjustment potentiometer;

[0047] A waveform simulation module: The seismic wave signal generator 4 can simulate different types of seismic waves, including longitudinal waves (P waves) and transverse waves (S waves);

[0048] An application scenario module: By simulating seismic wave signals, it is used to test the performance of seismic monitoring equipment, develop and optimize earthquake early warning systems, and conduct safety assessments of earthquake engineering;

[0049] A technical parameter module: The technical parameters of the seismic wave signal generator 4 include the frequency range, amplitude, phase, etc., and the parameters can be adjusted according to the need to simulate different intensities and types of seismic waves.

[0050] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0051] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for simulating and analyzing the seismic performance of deep underground tunnels, comprising an installation frame (1), a seismic simulation mechanism, and a computer control mechanism (41), characterized in that: The earthquake simulation mechanism includes a six-degree-of-freedom vibration mechanism, a support mechanism (2), and a model placement mechanism (3). The six-degree-of-freedom vibration mechanism includes two groups of first hydraulic rod mechanisms (11). One group of the first hydraulic rod mechanisms (11) is respectively connected to the bottom of the installation frame (1) and the stage (14) through a first mounting plate (12) and a second mounting plate (13). The other group of the first hydraulic rod mechanisms (11) is connected to the side of the installation frame (1) and the stage (14) through a third mounting plate (15) and a fourth mounting plate (16). The model placement mechanism (3) is connected to the stage (14) through four support columns (17). A geophone (18) is installed at the middle of the stage (14). Four sides of the model placement mechanism (3) are each connected to a model limiting mechanism (32) through a second hydraulic rod mechanism (31). One side of the support mechanism (2) is provided with a track groove (21). A clamping plate (23) is connected inside the track groove (21) through a bidirectional threaded rod (22). A camera mechanism (24) is installed between the clamping plates (23). A knob (25) is installed on one side of the support mechanism (2). One end of the second hydraulic rod mechanism (31) is fixedly connected to the outer surface of the model placement mechanism (3). The other end of the second hydraulic rod mechanism (31) is fixedly connected to one side of the model limiting mechanism (32). The model limiting mechanism (32) is slidably connected to the four surrounding sides inside the model placement mechanism (3). A tunnel model is clamped between the four model limiting mechanisms (32).

2. The seismic performance simulation and analysis device for deep underground tunnels according to claim 1, wherein: A seismic wave signal generator (4) is fixedly connected to the middle of the installation frame (1). The geophone (18) and the seismic wave signal generator (4) are electrically connected to a computer control mechanism (41).

3. The seismic performance simulation and analysis device for deep underground tunnels according to claim 1, characterized in that: One end of the first mounting plate (12) is fixedly connected to the four corners at the bottom of the installation frame (1). One end of one group of the first hydraulic rod mechanisms (11) is rotatably connected to the other end of the first mounting plate (12). One end of the second mounting plate (13) is fixedly connected to the bottom of the stage (14) and corresponds to the position of the first mounting plate (12). The other end of one group of the first hydraulic rod mechanisms (11) is rotatably connected to the other end of the second mounting plate (13).

4. A simulation and analysis device for the seismic performance of deep underground tunnels according to claim 1, characterized in that: One end of the third mounting plate (15) is fixedly connected to the inner side of the installation frame (1). One side of the fourth mounting plate (16) is fixedly connected to the side of the stage (14). One end of the other group of the first hydraulic rod mechanisms (11) is rotatably connected to the other end of the third mounting plate (15). The other end of the other group of the first hydraulic rod mechanisms (11) is rotatably connected to the other end of the fourth mounting plate (16).

5. The seismic performance simulation and analysis device for deep underground tunnels according to claim 1, characterized in that: One end of the four support columns (17) is fixedly connected to the four corners on the upper surface of the stage (14). The other end of the four support columns (17) is fixedly connected to the four corners at the bottom of the model placement mechanism (3).

6. The seismic performance simulation and analysis device for deep underground tunnels according to claim 1, wherein: The first hydraulic rod mechanism (11) and the second hydraulic rod mechanism (31) are both connected to the hydraulic liquid supply mechanism (19) through pipelines.

7. The seismic performance simulation and analysis device for deep underground tunnels according to claim 1, wherein: One end of the support mechanism (2) is fixedly connected to one side outside the installation frame (1). Both ends of the bidirectional threaded rod (22) are rotatably connected to the inner wall of the track groove (21). One end of the knob (25) is fixedly connected to one end of the bidirectional threaded rod (22). One end of the clamping plate (23) is slidably connected to the inner wall of the track groove (21) and is connected to the outside of the bidirectional threaded rod (22).

8. The analysis method of a simulation analysis device for the seismic performance of deep underground tunnels according to claim 1, characterized in that: The analysis method steps are as follows: S1. First, place the deep underground tunnel model in the model placement mechanism (3). Then, simultaneously drive the four model limiting mechanisms (32) to move by the four second hydraulic rod mechanisms (31) so that the deep underground tunnel model is in the middle of the model placement mechanism (3). Then, simultaneously drive the four model limiting mechanisms (32) to reset by the four second hydraulic rod mechanisms (31). S2. Then, place the camera mechanism (24) in the middle of the support mechanism (2). Then, rotate the knob (25) so that the knob (25) drives the bidirectional threaded rod to rotate, thereby clamping and fixing the camera mechanism (24) by the two clamping plates (23). S3. Then, the computer control mechanism (41) issues an earthquake mode operation instruction, and sends an earthquake command signal to the six-degree-of-freedom vibration mechanism through the seismic wave signal generator (4), so that the six-degree-of-freedom vibration mechanism makes the stage (14) vibrate automatically. S4. The seismic detector (18) will monitor the vibration wave of the stage (14), and the camera mechanism (24) will monitor the displacement of the deep underground tunnel model, and convey the monitored information to the computer control mechanism (41). S5. Then, adjust the amplitude received by the deep underground tunnel model through the computer control mechanism (41) and the seismic wave signal generator (4) as needed, and the computer control mechanism (41) records and analyzes the real-time data of the deep underground tunnel model under different earthquake intensities.

9. The analysis method of a simulation analysis device for the seismic performance of deep underground tunnels according to claim 8, characterized in that: The seismic detector (18) includes a measurement module: responsible for sensing the vibration generated by ground motion; a conversion module: converting the vibration signal into an electrical signal; an output module: outputting the electrical signal, which is processed by an amplification and filtering circuit and finally outputs a seismic waveform for recording or analysis. The seismic wave signal generator (4) includes a signal generation module: generating a low-frequency sine oscillation signal through the master oscillator stage. The signal is amplified by a voltage amplifier to reach the required voltage output amplitude, and then the voltage can be directly output through the output attenuator, and the output voltage size can be adjusted by the master oscillator output adjustment potentiometer. A waveform simulation module: The seismic wave signal generator (4) can simulate different types of seismic waves, including longitudinal waves and transverse waves. An application scenario module: By simulating seismic wave signals, it is used to test the performance of seismic monitoring equipment, develop and optimize earthquake warning systems, and conduct safety assessments of earthquake engineering. Technical Parameter Module: The technical parameters of the seismic wave signal generator (4) include frequency range, amplitude, and phase. The parameters can be adjusted according to needs to simulate seismic waves of different intensities and types.

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