Rail traction type buried pipe stratum nonlinear dislocation deformation simulation device

Abstract

The invention provides a track traction type buried pipe stratum nonlinear dislocation deformation simulation device which comprises a dislocation body and a dislocation box, a plurality of profile steel frameworks are distributed at equal intervals, and a flexible gasket is arranged between any two adjacent profile steel frameworks so as to simulate a rock-soil body and an underground buried pipe; the sliding elastic pieces are distributed on the layer group pieces at equal intervals to form staggered sliding strips, and the four staggered sliding strips are located on the upper side and the lower side of the profile steel framework correspondingly. The multiple staggered gate grids are distributed at intervals, middle holes corresponding to the profile steel frameworks are formed in the middles of the staggered gate grids, and elastic sliding rails corresponding to the sliding elastic pieces are arranged in the middle holes. The driving pieces are arranged on one side of the base, and the multiple driving pieces correspond to the multiple staggered gate grids one to one; according to the method, the new technical means of multi-point fitting and flexible deformation are combined, the defects of an existing method can be overcome, the precision and applicability of ground surface deformation simulation can be greatly improved, and more reliable theoretical support and technical guarantee are provided for ground surface dislocation deformation simulation.

Description

Technical Field

[0001] The invention belongs to the technical field of surface deformation simulation, and in particular relates to a track-drawn buried pipe stratum nonlinear dislocation deformation simulation device. Background Art

[0002] Surface dislocation deformation has two major characteristics in the near-fault rock mass and fault fracture zone: continuous propagation and nonlinear distribution. The continuous propagation and nonlinear distribution of surface dislocation deformation are the prerequisites for the safety judgment of man-made structures such as underground buried pipes and surface buildings. The problems of continuous propagation and nonlinear simulation of surface dislocation deformation have not been completely solved. Surface dislocation involves the nonlinear mechanical behavior of the lithosphere and faults, and the interaction between stress fields, temperature fields and fluid pressure fields. It is difficult to obtain high-resolution, spatiotemporally continuous observation data, especially in seismically active areas. The accuracy and coverage of existing seismic exploration and satellite remote sensing data are limited, and they cannot fully capture the detailed characteristics of surface deformation. Most existing geophysical models are simplified models that cannot accurately describe the anisotropy, heterogeneity and nonlinear behavior of the real crust, such as the complex geometry of faults and changes in material properties. Nonlinear simulation involves a lot of computing resources, especially in long-term and large-area simulations, such as the numerical calculation of finite element method simulation of fault evolution.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art. The present invention provides a track-drawn buried pipe stratum nonlinear dislocation deformation simulation device.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A track-drawn buried pipe stratum nonlinear dislocation deformation simulation device comprises a dislocation body and a dislocation box.

[0007] The dislocation body comprises:

[0008] A steel frame, wherein a plurality of the steel frames are equidistantly distributed, and a flexible gasket is provided between any two adjacent steel frames to simulate rock and soil and underground buried pipes;

[0009] Sliding springs, a plurality of said sliding springs are evenly distributed on the layer group sheet to form a staggered sliding bar, and the four said staggered sliding bars are respectively located on the upper and lower sides of the steel frame;

[0010] The shift box comprises:

[0011] Pedestal;

[0012] A staggered gate, wherein a plurality of the staggered gates are spaced apart and a middle hole corresponding to the steel frame is provided in the middle of the staggered gate, and an elastic slide rail corresponding to the sliding spring is provided in the middle hole;

[0013] A driving member, the driving member is arranged on one side of the base, and a plurality of the driving members correspond to a plurality of the shifting gates one by one;

[0014] In response to the multiple driving members driving the displaced gate to slide laterally along the base, the elastic slide rail transmits the displaced displacement to cause the displaced body to undergo displaced deformation, so as to simulate the continuous displaced and nonlinear deformation characteristics in the real formation.

[0015] Preferably, an inner hole corresponding to the shape of the underground buried pipe is provided inside the steel frame, and a rubber cushion layer is laid in the inner hole.

[0016] Preferably, the layer group sheet is a plurality of overlapping strip steel sheets, an embedding groove corresponding to one side of the layer group sheet is provided in the middle of the sliding spring sheet, and an embedding groove corresponding to the other side of the layer group sheet is provided on the steel frame.

[0017] Preferably, the sliding spring piece is provided with a sliding head at one end away from the steel frame, and the sliding head is umbrella-shaped or mushroom-shaped;

[0018] The elastic slide rail is provided with a slide groove matched with the slide head.

[0019] Preferably, the flexible gasket is an airbag, a rubber part or a silicone part that is adapted to the shape of the steel frame.

[0020] Preferably, a linear slide rail corresponding to the shifting gate is provided on the base, the linear slide rail is assembled along the lateral sliding direction of the base, and the shifting gate is detachably fixed on the linear slide rail.

[0021] Preferably, a pad corresponding to the linear slide rail is provided at one end of the base, and the elastic slide rail located below extends along the upper surface of the pad to the other end of the base for the sliding of the displacing body.

[0022] Preferably, a plurality of steel cables correspondingly passing through the steel frame are provided in the circumferential direction of the displacing body, and the steel cables and the steel frame are in interference fit.

[0023] Preferably, the displaceable gate is a ring-shaped structure, and the four elastic slide rails are respectively fixed on the upper and lower sides of the displaceable gate; the spacing between the displaceable gates is smaller than the spacing between the steel frame.

[0024] Preferably, the plurality of driving members are connected to a controller, and the driving amounts of the plurality of driving members are distributed in a nonlinear manner according to the surface displacement.

[0025] Beneficial effects: Through the dislocation body and dislocation box, multi-point continuous fitting and flexible deformation are formed to simulate the nonlinear and continuous propagation characteristics of surface dislocation deformation, and real-time curve fitting of surface deformation is performed according to actual needs to accurately capture the nonlinear characteristics in space; flexible deformation simulation introduces elastic or viscoelastic material loading to achieve real-time adjustment of loading conditions and nonlinear propagation. This new technical means combining multi-point fitting and flexible deformation can not only overcome the shortcomings of existing methods, but also greatly improve the accuracy and applicability of surface deformation simulation, providing more reliable theoretical support and technical guarantee for surface dislocation deformation simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0027] Figure 1 A schematic structural diagram of a dislocation body in a specific embodiment provided by the present invention;

[0028] Figure 2 A simplified cross-sectional view of a dislocation body in a specific embodiment provided by the present invention;

[0029] Figure 3 A schematic structural diagram of a shift box in a specific embodiment provided by the present invention;

[0030] Figure 4 It is a schematic assembly diagram of the dislocation body and the dislocation box in the specific embodiment provided by the present invention.

[0031] In the figure: 1. Steel frame; 2. Sliding spring; 3. Layer assembly; 4. Steel cable; 5. Rubber cushion; 6. Flexible gasket; 7. Base; 8. Elastic slide rail; 9. Pad; 10. Linear slide rail; 11. Driving part; 12. Sliding gate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0033] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0035] Surface deformation is often caused by earthquakes, geological slip or fault activity. During the deformation, the displacement is transmitted between the rock and soil bodies, inducing a "rope-throwing" stratum propagation effect. During the process of stratum deformation propagation, if the linear buried pipe fails to adapt to the surface deformation, it will seriously affect the safety of the underground buried pipe, which may cause distortion or even rupture failure, causing secondary disasters such as gas leakage, water supply interruption or environmental pollution.

[0036] Surface dislocation deformation has two major characteristics in the near-fault rock mass and fault fracture zone: continuous propagation and nonlinear distribution. As for the surface distribution characteristics of dislocation deformation, the results of "air-to-ground" InSAR satellite measurements and ground deformation monitoring have fully proved that surface dislocation deformation presents continuous and nonlinear propagation distribution characteristics. For example, on both sides of the surface dislocation area in the Andreas Fault in the United States and the Longmenshan Fault in China, the dislocation displacement between rock masses presents a "relay-type baton" transmission feature, propagating in "hillside shape" and "semi-S shape" modes. Similarly, large-scale surface dislocation model tests verify such results, and the dislocation displacement has semi-"S"-shaped and "slope line" propagation characteristics near the fault. The continuous propagation and nonlinear characteristics of such dislocation deformation are significant.

[0037] The continuous propagation and nonlinear distribution of surface displacement deformation are the prerequisites for safety assessment of underground buried pipes, surface buildings and other man-made structures. Only by accurately mastering the nonlinear characteristics of surface displacement deformation propagation can we accurately master the stress and deformation characteristics of underground buried pipes in the area, and then accurately study the effect of surface displacement on buried pipes, reasonably design the strength, flexibility and connection method of pipelines, optimize pipeline layout and burial depth, improve the deformation resistance of buried pipes, reduce the risk of damage to infrastructure caused by geological disasters, and protect people's lives and property.

[0038] The problem of continuous propagation and nonlinear simulation of surface displacement deformation has not been completely solved. The existing surface deformation simulation technology methods mainly include sandbox experimental technology, collapse displacement method, and distributed displacement jack technology. For example, the collapse method is used in patent application CN115168938A to determine the scope of surface displacement. The collapse method uses a set of empirical formulas to comprehensively calculate the horizontal range of surface cracks through multiple parameters (such as rock layer height, loose layer thickness, displacement angle, etc.), but this method assumes that the properties of stratum materials and their movement laws are linearly predictable, ignoring the nonlinear deformation characteristics of fault zones and local stress concentration areas. Patent application CN118624268A uses a sandbox to simulate the deformation of pipelines buried deep underground, which can intuitively present the deformation of strata and tunnels, but the experimental process is mostly local loading displacement, which cannot effectively simulate the nonlinear phenomenon in the process of dynamic deformation propagation under large scale. In the multi-jack distributed displacement technology, although the multi-jack distributed displacement technology can simulate multi-point loading, the loading mode is usually fixed or linearly increasing, which is difficult to truly reflect the complex movement law of the crustal fault system under non-uniform displacement, and due to the limitations of mechanical control, insufficient loading synchronization may introduce errors (such as patent applications CN115753161A, CN116380382A). The common defect of these technologies is that they have limited ability to reproduce continuous surface deformation and nonlinear distribution, especially in multi-scale deformation coupling, motion simulation under surface sharing, and behavior prediction.

[0039] like Figure 1-4 As shown, the present invention discloses a device suitable for stratum dislocation deformation simulation, which aims to achieve accurate simulation of complex stratum dislocation behavior through multi-point fitting and flexible track traction. It mainly includes a dislocation body and a dislocation box. The dislocation body is used to simulate the simulation of rock and soil and underground buried pipes. The dislocation box can drive the dislocation body according to actual needs. The two cooperate with each other to simulate the continuity and nonlinear characteristics of stratum dislocation deformation.

[0040] The dislocation body includes a steel frame 1 and a sliding spring 2. The steel frame 1 is a circular steel plate. A plurality of steel frames 1 are evenly distributed. The plurality of steel frames 1 cooperate with each other to provide radial support for the dislocation body. A flexible gasket 6 is provided between any two adjacent steel frames 1 to form a closed cavity to simulate rock and soil and underground buried pipes, and to provide flexible adjustment capability for the dislocation body. A plurality of sliding springs 2 are evenly distributed on the layer group 3 to form a dislocation slide bar. The spacing between the sliding springs 2 is adjusted according to actual needs, and the minimum can be 0, and the maximum does not exceed one third of the spacing of the steel frame 1. It is preferred that the sliding springs 2 are densely distributed in multiple layers along the direction of the layer group 3, and the layer group 3 has a certain deformation capability, so that it can simulate the local nonlinear deformation characteristics of the stratum with the sliding springs 2. Four dislocation slide bars are respectively located on the upper and lower sides of the steel frame 1, and the dislocation body is slidably assembled in the sliding box through the dislocation slide bars distributed up and down.

[0041] The shift box includes a base 7, a shift gate 12 and a driving member 11. The base 7 can be a steel plate or an experimental platform. The base 7 provides stability and rigidity for the overall supporting structure of the shift box.

[0042] A plurality of displaced gates 12 are distributed at intervals, and the spacing between the displaced gates 12 is no greater than the spacing of the steel frame 1. A central hole corresponding to the steel frame 1 is provided in the middle of the displaced gate 12. The internal shape of the displaced gate 12 is adapted to the shape of the steel frame 1, so that the displaced body can slide into place inside the displaced gate 12. An elastic slide rail 8 corresponding to the sliding spring 2 is provided in the central hole. The elastic slide rail 8 can be made of rubber, steel or aluminum alloy, and can be deformed under the external force of the driving member 11. The driving member 11 is arranged on one side of the base 7. A plurality of driving members 11 correspond to a plurality of displaced gates 12 one by one. The driving member 11 realizes distributed displaced drive by pulling or pushing the displaced gate 12, and controls the accuracy and range of the displaced displacement according to actual test requirements.

[0043] In response to the multiple driving members 11 driving the displaced gate 12 to slide laterally along the base 7, the displaced displacement is transmitted through the elastic slide rail 8 to cause the displaced body to undergo displaced deformation, and the migration of the displaced gate 12 drives the elastic slide rail 8 to undergo continuous fitting displaced deformation. The elastic slide rail 8 further pulls the steel frame 1 in the flexible sliding box to form a multi-point fitting flexible displaced effect to simulate the continuous displaced and nonlinear deformation characteristics in the real stratum.

[0044] In an optional embodiment, the steel frame 1 is a circular steel sheet, and an inner hole corresponding to the shape of the underground buried pipe is provided inside the steel frame 1. The inner hole is square, and a rubber cushion layer 5 is laid in the inner hole and laid on the inner wall of the cavity composed of multiple circular steels. The rubber cushion layer 5 is 4 pieces, thereby forming a simulated space that simulates the rock and soil and the underground buried pipe.

[0045] In an optional embodiment, the layer group sheet 3 is a plurality of overlapping strip steel sheets, which are used as the deformation substrate of the flexible dislocation body and can distribute the deformation force together with the sliding spring sheet 2. An embedding groove corresponding to one side of the layer group sheet 3 is provided in the middle of the sliding spring sheet 2, and an embedding groove corresponding to the other side of the layer group sheet 3 is provided on the steel frame 1. In this embodiment, the embedding groove and the sliding spring sheet 2 are interference fit, or the embedding groove and the sliding spring sheet 2 are fixed by glue or welding after installation.

[0046] In this embodiment, the layer group sheet 3 is composed of 2-6 thin strip steel sheets, which have sufficient flexibility and nonlinear ability, so that the steel frame 1 can be driven to move under the drive of the sliding spring piece 2. The sliding spring piece 2 can be a steel sheet or other alloy sheet. In order to ensure the transmission accuracy between the sliding spring piece 2 and the elastic slide rail 8 and the steel frame 1, a sliding head is provided at the end of the sliding spring piece 2 away from the steel frame 1. The sliding head is umbrella-shaped or mushroom-shaped, and correspondingly, a slide groove compatible with the sliding head is provided on the elastic slide rail 8, so as to ensure that the sliding spring piece 2 will not be longitudinally displaced or detached from the slide groove, thereby meeting the test requirements.

[0047] In an optional embodiment, the flexible gasket 6 is located between the round steels to form a simulated cavity, which can provide flexible adjustment capability of deformation. The flexible gasket 6 is an airbag, rubber part or silicone part that matches the shape of the steel frame 1.

[0048] The circumference of the dislocation body is provided with a plurality of steel cables 4 corresponding to the steel frame 1. Specifically, four steel cables 4 are respectively distributed at the four corners of the round steel, and are used to fix and form an integrated structure with the flexible gasket 6 and the round steel knot to ensure the structural stability of the device during the deformation process. The steel cables 4 and the steel frame 1 are interference fit, and the corners of the flexible gasket 6 are provided with holes corresponding to the steel cables 4.

[0049] In an optional embodiment, a linear slide rail 10 corresponding to the displaced gate 12 is provided on the base 7. The linear slide rail 10 is a solid square steel column. The linear slide rail 10 is used to support the displaced gate 12 and drive the displaced gate 12 to move along a predetermined path to simulate the dislocation. The linear slide rail 10 is assembled along the lateral horizontal sliding of the base 7. A dovetail-shaped slide bar corresponding to the linear slide rail 10 is provided on the upper surface of the base 7. Correspondingly, a slide groove corresponding to the dovetail-shaped slide bar is provided on the lower surface of the linear slide rail 10. The displaced gate 12 is fixed to the linear slide rail 10 in a detachable manner. Specifically, a slot is provided on the upper surface of the linear slide rail 10, and the displaced gate 12 is correspondingly assembled in the slot. When the driving member 11 drives the linear slide rail 10, it drives the displaced gate 12 to move to realize the dislocation control.

[0050] In an optional embodiment, a pad 9 corresponding to the linear slide rail 10 is provided at one end of the base 7. The thickness of the pad 9 is determined according to the distance between the lower surface of the linear slide rail 10 and the upper surface of the base 7. The length of the elastic slide rail 8 located below is adapted to the length of the base 7. The elastic slide rail 8 extends along the upper surface of the pad 9 to the other end of the base 7 for the sliding of the dislocation body, so that the dislocation body can be smoothly embedded in the dislocation box. The pad 9 can be a metal plate, and the base 7 and the elastic slide rail 8 are fixed by bolts.

[0051] In an optional embodiment, the shift gate 12 is a ring-shaped structure, which can be specifically welded from solid square steel, so as to ensure the assembly stability of the shift gate 12 and the linear slide rail 10. The four elastic slide rails 8 are respectively fixed on the upper and lower sides of the shift gate 12. Specifically, two elastic slide rails 8 are provided above and below the shift gate 12. The spacing of the shift gate 12 is smaller than the spacing of the steel frame 1, so as to ensure that the shifting force is effectively transmitted to the shift box.

[0052] In an optional embodiment, multiple driving members 11 are connected to the controller in correspondence. The driving member 11 is any one of an electric cylinder, a pneumatic cylinder and an oil cylinder. The controller can be a computer. The telescopic length of the driving member 11 is controlled by a control valve. Before the test, the parameters of the nonlinear displacement are set according to the test requirements or the nonlinear characteristics of the surface displacement, and then the parameters are input into the controller so that the driving amounts of the multiple driving members 11 are distributed according to the nonlinear characteristics of the surface displacement. The multi-point fitting of the sliding spring piece 2 drives the steel skeleton 1 to accurately simulate the nonlinear continuous deformation characteristics of the formation. The flexible gasket 6 and the steel cable 4 enable the displacement body and the displacement box to work flexibly together to adapt to the displacement process of complex geological conditions. The steel cable 4 and the airbag effectively improve the safety and stability of the simulation process, which is very suitable for geological disaster research, buried pipe engineering analysis and other scientific and engineering fields involving formation displacement.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A track-drawn buried pipe stratum nonlinear dislocation deformation simulation device, characterized in that: Including a dislocation body and a dislocation box, The dislocation body comprises: A steel frame, wherein a plurality of the steel frames are equidistantly distributed, and a flexible gasket is provided between any two adjacent steel frames to simulate rock and soil and underground buried pipes; Sliding springs, a plurality of said sliding springs are evenly distributed on the layer group sheet to form a staggered sliding bar, and the four said staggered sliding bars are respectively located on the upper and lower sides of the steel frame; The shift box comprises: Pedestal; A staggered gate, wherein a plurality of the staggered gates are spaced apart and a middle hole corresponding to the steel frame is provided in the middle of the staggered gate, and an elastic slide rail corresponding to the sliding spring is provided in the middle hole; A driving member, the driving member is arranged on one side of the base, and a plurality of the driving members correspond to a plurality of the shifting gates one by one; In response to the multiple driving members driving the displaced gate to slide laterally along the base, the elastic slide rail transmits the displaced displacement to cause the displaced body to undergo displaced deformation, so as to simulate the continuous displaced and nonlinear deformation characteristics in the real formation.

2. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1 is characterized in that: An inner hole corresponding to the shape of the underground buried pipe is arranged inside the steel frame, and a rubber cushion layer is laid in the inner hole.

3. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1 is characterized in that: The layer group sheet is a plurality of overlapping strip steel sheets, an embedding groove corresponding to one side of the layer group sheet is provided in the middle of the sliding spring sheet, and an embedding groove corresponding to the other side of the layer group sheet is provided on the steel frame.

4. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 3 is characterized in that: The sliding spring piece is provided with a sliding head at one end away from the steel frame, and the sliding head is umbrella-shaped or mushroom-shaped; The elastic slide rail is provided with a slide groove matched with the slide head.

5. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1 is characterized in that: The flexible gasket is an air bag, a rubber piece or a silicone piece that matches the shape of the steel frame.

6. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1 is characterized in that: The base is provided with a linear slide rail corresponding to the shifting gate, the linear slide rail is assembled along the lateral sliding of the base, and the shifting gate is fixed on the linear slide rail in a detachable manner.

7. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 6 is characterized in that: A pad corresponding to the linear slide rail is provided at one end of the base, and the elastic slide rail located below extends along the upper surface of the pad to the other end of the base for the sliding of the displacing body.

8. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1 is characterized in that: A plurality of steel cables correspondingly passing through the steel frame are arranged on the circumference of the dislocation body, and the steel cables and the steel frame are in interference fit.

9. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1, characterized in that: The displaced gate grid is a circular structure, and the four elastic slide rails are respectively fixed on the upper and lower sides of the displaced gate grid; the spacing between the displaced gate grids is smaller than the spacing between the steel frame.

10. The track-pulled buried pipe stratum nonlinear dislocation deformation simulation device according to claim 1, characterized in that: The plurality of driving members are correspondingly connected to the controller, and the driving amounts of the plurality of driving members are distributed in a nonlinear manner according to the surface displacement.

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