CN112116861A - Device and method for simulating tunnel dynamic response under fault dislocation - Google Patents
Device and method for simulating tunnel dynamic response under fault dislocation Download PDFInfo
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Abstract
The invention discloses a device and a method for simulating tunnel dynamic response under fault dislocation, wherein the device comprises the following components: the movable model part is used for simulating a fault movable plate; the fixing model part is used for simulating a fault fixing disc; the first translation device is arranged at the bottom of the movable model part and comprises a first driving device and a first guide rail, and the first driving device is used for driving the movable model part to translate on the first guide rail; the second driving device is arranged at the lower part of the first translation part and is used for lifting the first translation device and the movable model part; the movable mould part comprises a first connecting piece arranged on the movable mould part and a second connecting piece arranged on the fixed mould part, wherein a second guide rail is arranged between the first connecting piece and the second connecting piece and is used for the movable mould part and the first connecting piece to move along the second guide rail. The invention realizes the dynamic response simulation of the tunnel under fault dislocation of different types and different dip angles, and is beneficial to the research on the failure mechanism and the fault-resistant design of the tunnel passing through the fault.
Description
Technical Field
The invention relates to the field of tunnel simulation under fault dislocation, in particular to a device and a method for simulating tunnel dynamic response under fault dislocation.
Background
With the rapid development of the transportation industry in China, the key points of the construction of the transportation infrastructure will gradually shift from the southeast coastal areas to the middle, northwest and southwest mountainous areas. The southwest mountain area is affected by collision between Indian ocean plates and European plates, the cutting of high mountain and valley is violent, the rock mass is broken, and the movable fracture is densely spread. In the process of building traffic infrastructures, particularly for medium-length tunnels, a large number of active faults can be inevitably crossed, the slow dislocation of the active faults can seriously affect the stability of tunnel surrounding rocks, and the shearing damage of tunnel structures can be caused. For example, the saint anderles fault dislocation in the united states causes 2 railway tunnels to be destroyed; dislocation of Sylmar fault causes displacement and dislocation of the Simmons tunnel, and a large amount of cracks are generated in the tunnel lining; the fault dislocation of the single mountain in Japan causes the single mountain tunnel under construction to be destroyed; in China, the great earthquake of Wenchuan causes the damage of more than 300 tunnels in Sichuan to different degrees. Because fault dislocation has certain contingency and timeliness to the destruction of the tunnel structure, research through a field test means is very difficult. And the numerical simulation method is adopted to research the dynamic response of the tunnel structure under the fault dislocation action, and a large amount of test data is also needed to verify the numerical simulation result. Therefore, the dynamic response of the tunnel under fault dislocation is the most effective research method by adopting a model test.
The fault is a structure that the crust is broken by stress and the rock masses on two sides of the broken surface are obviously displaced relatively, and common fault types are roughly divided into four types of normal faults, reverse faults, walk-slip faults and walk-slip and thrust coupling faults according to different fault dislocation modes. However, the existing tunnel failure simulation test device and method under fault dislocation are based on a single working condition, only a single dislocation mode and a fixed fault inclination angle of a fault are considered, various fault dislocation modes cannot be simulated, the fixed fault inclination angle causes poor adaptability of the test device and method, and support cannot be provided for failure mechanism and anti-fault design research of crossing fault tunnels.
Disclosure of Invention
In order to solve at least one technical problem, the embodiments of the present specification provide an apparatus and a method for simulating a tunnel dynamic response under fault dislocation.
In one aspect, an apparatus for simulating a tunnel dynamic response under fault dislocation provided by embodiments of the present specification includes:
the movable model part is used for simulating a fault movable plate;
the fixing model part is used for simulating a fault fixing disc;
a first translation device arranged at the bottom of the movable model part and comprising a first driving device and a first guide rail, wherein the first driving device is used for driving the movable model part to translate on the first guide rail;
the second driving device is arranged at the lower part of the first translation part and is used for lifting the first translation device and the movable model part;
the movable mould part comprises a first connecting piece arranged on the movable mould part and a second connecting piece arranged on the fixed mould part, wherein a second guide rail is arranged between the first connecting piece and the second connecting piece and is used for the movable mould part and the first connecting piece to move along the second guide rail.
Further, the device also comprises a third driving device and a fixed mould part bracket for supporting the fixed mould part; the bottoms of the movable model part and the fixed model part are respectively provided with a first movable bottom plate and a second movable bottom plate; one end of the third driving device is rigidly connected with the second movable bottom plate, and the other end of the third driving device is rigidly connected with the fixed mould profile bracket; the third driving device is used for driving the second movable bottom plate to slide, and further driving the first movable bottom plate to slide and the second connecting piece to rotate.
In another aspect, embodiments of the present specification provide a method for simulating a tunnel dynamic response under fault dislocation, including:
establishing a similar system based on a similar theory based on physical parameters including tunnel parameters, surrounding rock parameters and fault parameters in actual engineering, wherein the similar system is used for establishing the device for simulating tunnel dynamic response under fault dislocation and acquiring indexes of the dynamic response;
based on the actual dip angle of the fault and a trigonometric function principle, calculating the elongation of the angle adjusting hydraulic rod, controlling the angle adjusting hydraulic rod to extend to the elongation so as to push the second movable bottom plate to slide, driving the first movable bottom plate to slide and the second dip adjusting disc to rotate by the second movable bottom plate, and setting a fixing bolt in an angle fixing groove when the dislocation seam angle of the second dip adjusting disc and the first dip adjusting disc is consistent with the actual dip angle of the fault to be simulated;
determining the proportion of surrounding rock and tunnel materials based on the similar system, preparing the surrounding rock similar materials, prefabricating a tunnel lining structure model, laying the surrounding rock similar materials in the device in layers, and continuously filling the upper surrounding rock materials after installing a data acquisition sensor;
processing the actual dislocation speed of the normal fault based on a similar theory, controlling the hydraulic jacking rod to uniformly contract based on the dislocated rate of the normal fault after the similarity, driving the movable model box to descend along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocation of the normal fault;
and processing the actual dislocation speed of the thrust fault based on a similar theory, controlling the hydraulic jacking rod to uniformly extend based on the dislocated speed of the similar thrust fault, driving the movable model box to lift along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocated thrust fault.
And further, the actual dislocation speed of the slip fault is processed based on a similar theory, the hydraulic translation rod is controlled to be uniformly extended based on the dislocation speed of the similar slip fault, the movable model box is driven to move along the translation guide rail, and the dynamic response of the tunnel under the dislocation of the slip fault is simulated.
And further, the actual dislocation speed of the walking slip and thrust coupling fault is processed based on a similar theory, and the hydraulic jacking rod and the hydraulic translation rod are respectively controlled to uniformly extend to drive the movable model box to lift and simulate the dynamic response of the tunnel under the dislocation of the walking slip and thrust coupling fault based on the dislocation speed of the walking slip fault and the dislocation speed of the thrust coupling fault after the similarity.
According to the technical scheme provided by the embodiment of the specification, the embodiment of the invention controls the lifting and translation of the movable model box relative to the fixed model box and the coupled movement of the lifting and translation through the hydraulic lifting rod and/or the hydraulic translation rod, and simulates different types of fault dislocation motions such as a normal fault, a reverse fault, a walk-slip and thrust coupled fault and the like; the angle of the base is adjusted by controlling the inclination angle adjusting disc and the angle of the hydraulic jacking rod, and any fault inclination angle between 45 degrees and 90 degrees is simulated. In addition, the dynamic response of the tunnel structure in the dislocation process of the forward fault, the reverse fault, the walk-slip fault and the walk-slip and thrust coupling fault can be tested, the embodiment of the specification solves the problems that the conventional fault dislocation tunnel damage simulation device can only simulate a single fault dislocation mode, a fixed fault inclination angle and the like, realizes the dynamic response simulation of tunnels under fault dislocation of different types and different inclination angles, and is favorable for the design research on the damage mechanism and the fault resistance of the tunnel passing through the fault.
Drawings
FIG. 1 is an elevation view of an apparatus for simulating a tunnel dynamic response at a fault dip of 90 in accordance with some embodiments of the present disclosure.
FIG. 2 is a side view of an apparatus for simulating a tunnel dynamic response at a fault dip of 90 in accordance with certain embodiments of the present disclosure.
FIG. 3 is an elevation view of an apparatus for simulating a tunnel dynamic response at a fault dip of 45 in some embodiments herein.
FIG. 4 is a front view of some embodiments of the present description used to simulate fault thrust and slip-slip coupled dislocation at a fault dip angle of 45.
FIG. 5 is a side view of some embodiments of the present description for simulating fault thrust and slip-slip coupling dislocation at a fault dip angle of 45.
FIG. 6 is a perspective view of a tilt adjustment disk and movable floor in accordance with certain embodiments of the present disclosure.
Fig. 7 is a perspective view of a hydraulic lifting rod and an angle adjustment base according to some embodiments of the present disclosure.
FIG. 8 is a schematic perspective view of a pivoting track for a moveable mold box and a tilt disk according to some embodiments of the present disclosure.
Fig. 9 is a perspective view of a hydraulic translation rod and translation guide rail in accordance with some embodiments of the present disclosure.
Fig. 10 is a perspective view of an angle adjustment hydraulic rod according to some embodiments of the present disclosure.
FIG. 11 is a flow diagram of a method for simulating a tunnel dynamic response under fault dislocation in accordance with some embodiments of the present description.
FIG. 12 is another flow diagram of a method for simulating a tunnel dynamic response under fault dislocation in accordance with some embodiments of the present disclosure.
FIG. 13 is yet another flow chart of a method for simulating a tunnel dynamic response under fault dislocation according to some embodiments of the present disclosure.
Description of the drawings: 1. a movable model part; 2. fixing the model part; 3. a second driving device; 4. a first base; 5. a first driving device; 6. a first guide rail; 7. a first connecting member; 8. a second guide rail; 9. an angle fixing groove; 10. a first rotating guide rail; 11. a third driving device; 12. a second movable floor; 13. a connector bracket; 14. fixing a mould piece bracket; 15. a second base; 16. a first movable floor; 17. a second rotating guide rail; 18. a second connecting member.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification.
As shown in fig. 1 to 10, the present description provides in some embodiments an apparatus for simulating tunnel dynamic response under fault dislocation, comprising a movable model part 1 for simulating a fault movable plate; a fixed mould type member 2 for simulating a fault fixed disc; the first translation device arranged at the bottom of the movable model part 1 comprises a first driving device 5 and a first guide rail 6, the first driving device 5 is used for driving the movable model part 1 to translate on the first guide rail 6; the second driving device 3 is arranged at the lower part of the first translation part and is used for lifting the first translation device and the movable model part 1; the movable mould part comprises a first connecting piece 7 arranged on the movable mould part 1 and a second connecting piece 18 arranged on the fixed mould part 2, wherein a second guide rail 8 is arranged between the first connecting piece 7 and the second connecting piece 18, and the movable mould part 1 and the first connecting piece 7 move along the second guide rail 8.
In some embodiments of the present description, one end of the first driving device 5 is rigidly connected to the bottom of the movable model part 1 and is slidably connected to the first steel plate, and the other end of the first driving device 5 is rigidly connected to the first steel plate and is slidably connected to the bottom of the movable model part 1; the first steel plate is arranged between the second driving device 3 and the first driving device 5; the first guide rail 6 is provided on the first steel plate.
In some embodiments of the present description, a third driving device 11 and a fixed mould part support 14 for supporting the fixed mould part 2 are also included; the bottoms of the movable model part 1 and the fixed mould part 2 are respectively provided with a first movable bottom plate 16 and a second movable bottom plate 12; one end of the third driving device 11 is rigidly connected with the second movable bottom plate 12, and the other end of the third driving device 11 is rigidly connected with the bracket of the fixed mould profile 2; the third driving device 11 is used for driving the second movable bottom plate 12 to slide, and further driving the first movable bottom plate 16 to slide and the second connecting member 18 to rotate.
In some embodiments of the present description, a first rotating guide 10 is fixedly arranged inside the movable model part 1, so that the first connecting piece 7 rotates along the first rotating guide 10; a second rotating guide rail 17 is fixedly arranged on the inner side of the fixed mould type piece 2, so that a second connecting piece 18 rotates along the second rotating guide rail 17; the top of the second driving device 3 is connected with the bottom of the first steel plate through a bearing, the bottom of the second driving device 3 is arranged on a third guide rail, and the third guide rail is arranged on the first base 4; the first link 7 rotates with the rotation of the second link 18.
In some embodiments of the present disclosure, the present disclosure further includes a fixing bolt and an angle fixing groove 9 disposed on the first connecting member 7 and the second connecting member 18, wherein the angle fixing groove 9 and the fixing bolt are matched to position the rotation angle of the first connecting member 7 and the second connecting member 18.
In some embodiments herein, a connector bracket 13 supporting the first connector 7 and the second connector 18; a second mount 15 supporting means for simulating the dynamic response of the tunnel under fault dislocation.
In some embodiments of the present description, the means for simulating the dynamic response of the tunnel under fault dislocation is welded to the second mount 15.
In some embodiments of the present disclosure, the movable mold part 1 is a movable mold box, the fixed mold part 2 is a fixed mold box, the first driving device 5 is a hydraulic translation rod, the first guide rail 6 is a translation guide rail, the second driving device 3 is a hydraulic lifting rod, the third guide rail is an arc-shaped, the first connecting member 7 and the second connecting member 18 are a first tilt angle adjusting disk and a second tilt angle adjusting disk, respectively, the second guide rail 8 is a disk translation guide rail of the first tilt angle adjusting disk, the third guide rail is a sliding guide rail disposed on an angle adjusting base, the third driving device 11 is an angle adjusting hydraulic rod, and the first rotating guide rail 10 and the second rotating guide rail 17 are a rotating guide rail of the first tilt angle adjusting disk and a rotating guide rail of the second tilt angle adjusting disk, respectively.
In some embodiments of the present disclosure, the first and second tilt discs are semicircular and independent from each other, the first and second tilt discs are respectively mounted to the movable and stationary mold boxes through the first and second rotating rails 10 and 17, a disc translation rail is disposed at an outer side between the first and second tilt discs, and a second steel plate for rotation is disposed at an inner side between the first and second tilt discs.
The following is a detailed description of the two embodiments described above with reference to fig. 1 to 10:
as shown in fig. 1 and 2, the device comprises a movable model box, a fixed model box, a hydraulic jacking rod, an angle adjusting base, a hydraulic translation rod, a translation guide rail, an inclination angle adjusting disc, a disc translation guide rail, a disc angle fixing groove, a disc rotating guide rail, an angle adjusting hydraulic rod, a fixed box movable bottom plate, a movable box movable bottom plate, a disc support, a fixed box support and a bearing bottom plate. The movable model box is used for simulating a fault movable disc, provides a jacking force through a hydraulic jacking rod to realize the thrust dislocation of the fault movable disc, and provides a translation force through a hydraulic translation rod and a translation guide rail to realize the sliding dislocation of the fault movable disc; the angle adjustment hydraulic rod provides translation force to push the movable bottom plate of the model box to slide, so that the inclination angle adjustment disc is driven to slide along the disc rotating guide rail to adjust the angle, and the angle is fixed through the disc angle fixing groove to simulate different fault inclination angles.
As shown in fig. 9, one end of the hydraulic translation rod is rigidly connected to the bottom surface of the movable model box, the other end is rigidly connected to the surface of the jacking steel plate, and a translation guide rail is further arranged between the hydraulic translation rod and the jacking steel plate to push the movable model box to slide in a translation manner.
As shown in fig. 7, the top of the hydraulic jacking rod is connected with the bottom of the jacking steel plate through a movable bearing, and the bottom of the hydraulic jacking rod is connected with the angle adjusting base through a sliding guide rail, so that the hydraulic jacking rod can push the movable model box to perform jacking motion.
As shown in fig. 10, one end of the angle adjusting hydraulic rod is rigidly connected with the movable bottom plate of the fixed box, and the other end is rigidly connected with the bracket of the fixed box. The fixed box movable bottom plate can be pushed to slide through the angle adjusting hydraulic rod, and the fixed box movable bottom plate slides to drive the movable box movable bottom plate to slide and the inclination angle adjusting disc to rotate.
As shown in fig. 6, the tilt adjusting disk is composed of identical semicircular iron plates, which are independent of each other, are respectively installed in the movable mold box and the fixed mold box through the disk rotating guide rail, and are provided with disk angle fixing grooves for fixing angles, the bottom is provided with a disk support, a disk translation guide rail is arranged on the outer side between the semicircular iron plates, and a steel plate for rotation is arranged on the inner side.
In another aspect, as shown in fig. 11 to 13, some embodiments herein further provide a method for simulating a tunnel dynamic response under fault dislocation, comprising the steps of:
s1, establishing a similar system based on a similar theory based on physical parameters including tunnel parameters, surrounding rock parameters and fault parameters in actual engineering, wherein the similar system is used for establishing a device for simulating tunnel dynamic response under fault dislocation and acquiring indexes of the dynamic response in the embodiment;
s2, calculating the elongation of an angle adjusting hydraulic rod based on the actual dip angle of the fault and a trigonometric function principle, controlling the elongation of the angle adjusting hydraulic rod to push a second movable bottom plate to slide, driving a first movable bottom plate to slide and a second dip adjusting disc to rotate by the second movable bottom plate, and setting a fixing bolt in an angle fixing groove when the dislocation joint angle of the second dip adjusting disc and the first dip adjusting disc is consistent with the actual dip angle of the fault to be simulated;
s3, determining the proportion of surrounding rock and tunnel materials based on a similar system, preparing the surrounding rock similar materials, prefabricating a tunnel lining structure model, laying the surrounding rock similar materials in the device in layers, and continuously filling the upper surrounding rock materials after installing a data acquisition sensor;
s4, processing the actual dislocation speed of the normal fault based on a similar theory, controlling the hydraulic jacking rod to uniformly contract based on the dislocated rate of the normal fault after the similarity, driving the movable model box to descend along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocation of the normal fault;
and S5, processing the actual dislocation speed of the thrust fault based on a similar theory, controlling the hydraulic jacking rod to uniformly extend based on the dislocated speed of the similar thrust fault, driving the movable model box to lift along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocated thrust fault.
Specifically, the tunnel parameters in this embodiment may include a geometric dimension L, a bullet model E, a compressive strength σ, a poisson ratio μ, a density γ, an angular displacement θ, a linear displacement s, a stress σ, a strain, and the like; the surrounding rock parameters can comprise a geometric dimension L, cohesive force c, a dynamic elastic modulus E, an internal friction angle phi, a dynamic Poisson ratio mu, a gravity gamma and the like; the fault parameters can comprise a geometric dimension L, a cohesive force c, a dynamic elastic modulus E, an internal friction angle phi, a dynamic Poisson ratio mu, a gravity gamma, a dislocation speed V, a dislocation distance L and the like; in addition, the actual fault dip angle in the present embodiment may be 45 degrees, or may be an angle between 45 degrees and 90 degrees.
The method for simulating the tunnel dynamic response under fault dislocation further comprises the step S6.
And S6, processing the actual dislocation speed of the slip fault based on a similar theory, controlling the hydraulic translation rod to uniformly extend based on the dislocation speed of the similar slip fault, driving the movable model box to move along the translation guide rail, and simulating the dynamic response of the tunnel under the slip fault dislocation.
The method for simulating the tunnel dynamic response under fault dislocation further comprises the step S7.
And S7, processing the actual dislocation speed of the walking slip and thrust coupling fault based on a similar theory, respectively controlling the hydraulic jacking rod and the hydraulic translation rod to uniformly extend based on the dislocation speed of the walking slip fault and the dislocation speed of the thrust coupling fault after the similarity, driving the movable model box to lift, and simulating the dynamic response of the tunnel under the dislocation of the walking slip and thrust coupling fault.
In some embodiments of the description, the method further includes processing the actual dislocation speed of the slip fault based on a similar theory, controlling the hydraulic translation rod to extend uniformly based on the dislocation speed of the slip fault after the similarity, driving the movable model box to move along the translation guide rail, and simulating the dynamic response of the tunnel under the slip fault dislocation.
In some embodiments of the description, the method further includes processing an actual dislocation speed of the slip and thrust coupling fault based on a similar theory, and respectively controlling the hydraulic jacking rod and the hydraulic translation rod to extend uniformly to drive the movable model box to lift and simulate a dynamic response of the tunnel under the slip and thrust coupling fault dislocation based on the walk slip fault dislocation speed and thrust fault dislocation speed after the similarity.
In conclusion, the hydraulic jacking rod and/or the hydraulic translation rod are used for controlling the jacking and translation of the movable model box relative to the fixed model box and the jacking and translation coupling movement, so that fault dislocation of different types such as a normal fault, a reverse fault, a sliding and reverse impact coupling fault and the like is simulated; the angle of the base is adjusted by controlling the inclination angle adjusting disc and the angle of the hydraulic jacking rod, and any fault inclination angle between 45 degrees and 90 degrees is simulated. In addition, the dynamic response of the tunnel structure in the dislocation process of the forward fault, the reverse fault, the walk-slip fault and the walk-slip and thrust coupling fault can be tested, the embodiment of the specification solves the problems that the conventional fault dislocation tunnel damage simulation device can only simulate a single fault dislocation mode, a fixed fault inclination angle and the like, realizes the dynamic response simulation of tunnels under fault dislocation of different types and different inclination angles, and is favorable for the design research on the damage mechanism and the fault resistance of the tunnel passing through the fault.
While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or less operations that are performed sequentially or in parallel (e.g., using parallel processors or a multi-threaded environment). The present invention is described with reference to flowchart illustrations and/or block diagrams of methods according to embodiments of the invention.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method or device comprising the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the method embodiment, since it is substantially similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the apparatus embodiment. The above description is only an example of the present specification, and is not intended to limit the present specification. Various modifications and alterations to this description will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification should be included in the scope of the claims of the present specification.
Claims (12)
1. An apparatus for simulating a dynamic response of a tunnel under fault movement, comprising:
the movable model part is used for simulating a fault movable plate;
the fixing model part is used for simulating a fault fixing disc;
a first translation device arranged at the bottom of the movable model part and comprising a first driving device and a first guide rail, wherein the first driving device is used for driving the movable model part to translate on the first guide rail;
the second driving device is arranged at the lower part of the first translation part and is used for lifting the first translation device and the movable model part;
the movable mould part comprises a first connecting piece arranged on the movable mould part and a second connecting piece arranged on the fixed mould part, wherein a second guide rail is arranged between the first connecting piece and the second connecting piece and is used for the movable mould part and the first connecting piece to move along the second guide rail.
2. The apparatus for simulating a tunnel dynamic response under fault movement of claim 1, wherein:
one end of the first driving device is rigidly connected with the bottom of the movable model part and is in sliding connection with the first steel plate, and the other end of the first driving device is rigidly connected with the first steel plate and is in sliding connection with the bottom of the movable model part;
the first steel plate is arranged between the second driving device and the first driving device;
the first guide rail is disposed on the first steel plate.
3. The apparatus for simulating a tunnel dynamic response under fault movement of claim 1, further comprising:
a third driving device and a fixed mould part bracket for supporting the fixed mould part;
the bottoms of the movable model part and the fixed model part are respectively provided with a first movable bottom plate and a second movable bottom plate;
one end of the third driving device is rigidly connected with the second movable bottom plate, and the other end of the third driving device is rigidly connected with the fixed mould profile bracket;
the third driving device is used for driving the second movable bottom plate to slide, and further driving the first movable bottom plate to slide and the second connecting piece to rotate.
4. The apparatus for simulating a tunnel dynamic response under fault movement of claim 1, wherein:
a first rotating guide rail is fixedly arranged on the inner side of the movable model part so as to enable the first connecting piece to rotate along the first rotating guide rail;
a second rotating guide rail is fixedly arranged on the inner side of the fixed model part so as to enable the second connecting piece to rotate along the second rotating guide rail;
the top of the second driving device is connected with the bottom of the first steel plate through a bearing, the bottom of the second driving device is arranged on a third guide rail, and the third guide rail is arranged on the first base;
the first connecting piece rotates along with the rotation of the second connecting piece.
5. The apparatus for simulating tunneling dynamical response under fault movement of claim 1, wherein the apparatus for simulating tunneling dynamical response under fault movement further comprises:
the angle fixing groove is matched with the fixing bolt and used for positioning the rotating angle of the first connecting piece and the rotating angle of the second connecting piece.
6. The apparatus for simulating tunneling dynamical response under fault movement of claim 1, wherein the apparatus for simulating tunneling dynamical response under fault movement further comprises:
a connector bracket supporting the first connector and the second connector;
and the second base supports the device for simulating the dynamic response of the tunnel under fault dislocation.
7. The apparatus for simulating a tunnel dynamic response under fault movement of claim 6, wherein:
the device for simulating tunnel dynamic response under fault dislocation is welded on the second base.
8. The apparatus for simulating a tunnel dynamic response under fault movement according to any one of claims 4 to 7, wherein:
the movable mould part is a movable mould box, the fixed mould part is a fixed mould box, the first driving device is a hydraulic translation rod, the first guide rail is a translation guide rail, the second driving device is a hydraulic jacking rod, the third guide rail is arc-shaped, the first connecting piece and the second connecting piece are respectively a first inclination angle adjusting disc and a second inclination angle adjusting disc, the second guide rail is a disc translation guide rail of the first inclination angle adjusting disc, the third guide rail is a sliding guide rail arranged on an angle adjusting base, the third driving device is an angle adjusting hydraulic rod, and the first rotating guide rail and the second rotating guide rail are respectively a rotating guide rail of the first inclination angle adjusting disc and a rotating guide rail of the second inclination angle adjusting disc.
9. The apparatus for simulating a tunnel dynamic response under fault movement of claim 8, wherein:
the first inclination angle adjusting disc and the second inclination angle adjusting disc are semicircular and mutually independent, the first inclination angle adjusting disc and the second inclination angle adjusting disc respectively pass through the first rotating guide rail and the second rotating guide rail which are respectively installed in the movable model box and the fixed model box, the outer side between the first inclination angle adjusting disc and the second inclination angle adjusting disc is provided with the disc translation guide rail, and the inner side between the first inclination angle adjusting disc and the second inclination angle adjusting disc is provided with a second steel plate for rotation.
10. A method for simulating a dynamic response of a tunnel under fault movement, the method comprising the steps of:
s1, establishing a similar system based on physical parameters including tunnel parameters, surrounding rock parameters and fault parameters in actual engineering and based on a similar theory, wherein the similar system is used for establishing a device for simulating tunnel dynamic response under fault dislocation and acquiring indexes of the dynamic response;
s2, calculating the elongation of an angle adjusting hydraulic rod based on the actual dip angle of the fault and a trigonometric function principle, controlling the angle adjusting hydraulic rod to extend to the elongation so as to push a second movable bottom plate to slide, driving a first movable bottom plate to slide and a second dip angle adjusting disc to rotate by the second movable bottom plate, and arranging a fixing bolt in an angle fixing groove when the stagger joint angle of the second dip angle adjusting disc and the first dip angle adjusting disc is consistent with the actual dip angle of the fault to be simulated;
s3, determining the proportion of surrounding rock and tunnel materials based on a similar system, preparing the surrounding rock similar materials, prefabricating a tunnel lining structure model, laying the surrounding rock similar materials in a device for simulating tunnel dynamic response under fault dislocation in a layered mode, and continuously filling the upper surrounding rock materials after installing a data acquisition sensor;
s4, processing the actual dislocation speed of the normal fault based on a similar theory, controlling the hydraulic jacking rod to uniformly contract based on the dislocated rate of the normal fault after the similarity, driving the movable model box to descend along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocation of the normal fault;
and S5, processing the actual dislocation speed of the thrust fault based on a similar theory, controlling the hydraulic jacking rod to uniformly extend based on the dislocated speed of the similar thrust fault, driving the movable model box to lift along the disc translation guide rail, and simulating the dynamic response of the tunnel under the dislocated thrust fault.
11. The method for simulating tunneling dynamic response under fault movement according to claim 10, further comprising step S6:
and S6, processing the actual dislocation speed of the slip fault based on a similar theory, controlling the hydraulic translation rod to extend uniformly based on the dislocation speed of the similar slip fault, driving the movable model box to move along the translation guide rail, and simulating the dynamic response of the tunnel under the slip fault dislocation.
12. The method for simulating tunneling dynamic response under fault movement according to claim 10, further comprising step S7:
and S7, processing the actual dislocation speed of the walking slip and thrust coupling fault based on a similar theory, respectively controlling the hydraulic jacking rod and the hydraulic translation rod to uniformly extend based on the dislocated speed of the walking slip fault and the dislocated speed of the thrust coupling fault after the similarity, driving the movable model box to lift, and simulating the dynamic response of the tunnel under the dislocation of the walking slip and thrust coupling fault.
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