A splicable tesla valve shaped gallery

Abstract

The application discloses a splicable Tesla valve-shaped tunnel, which comprises a plate, a column and a wall plate. The plate is a top plate and a bottom plate of the splicable Tesla valve-shaped tunnel, and the plate is provided with convex and concave parts capable of cooperating with each other. The column is provided with convex and concave parts capable of cooperating with the plate, and the column is provided with a sliding groove. The wall plate is provided with a sliding block matched with the sliding groove of the column. The plate, the column and the wall plate are spliced into a Tesla valve-shaped tunnel mode through mutual laminating cooperation. The required plate, column and wall plate can be selected according to the specific structure of the required tunnel for assembly and splicing. Through reasonable optimization of the tunnel structure, the tunnel construction in the Tesla valve-shaped mode is realized by using the splicing and assembly mode, the damage of the shock wave generated by explosion to the tunnel and the equipment in the tunnel can be greatly reduced, the tunnel transportation difficulty is reduced, the engineering scale is reduced, the engineering cost and the labor cost are reduced.

Description

Technical Field

[0001] This invention relates to the technical field of underground support tunnel structure construction, specifically a Tesla valve-shaped tunnel that can be spliced ​​together. Background Technology

[0002] With the continuous advancement of science and technology and the improvement of the accuracy of precision-guided weapons, high-powered weapons can explode at the tunnel entrance. The high-intensity shock wave will enter the tunnel and propagate. Under the constraint of the tunnel wall, the pressure of the explosion shock wave decays slowly, and the duration of positive pressure increases, posing a great threat to personnel and equipment inside the tunnel.

[0003] When explosives detonate inside a tunnel, the reflection and superposition of air shock waves on the tunnel walls increase the overpressure peak and duration of the shock wave propagating along the tunnel compared to air shock waves in free atmosphere, thus amplifying its destructive power. In the initial stage of the explosion, the near-field flow pattern closer to the explosion's epicenter is complex. After moving a certain distance from the epicenter, a stable plane wave begins to propagate forward. Current methods for attenuating shock waves within tunnels mainly focus on two aspects: one is increasing the tunnel's length, but excessively long tunnels are not economically viable and require significant maintenance costs; the other method is modifying the tunnel's configuration, adding branching and passageway structures to the main tunnel. Summary of the Invention

[0004] The purpose of this invention is to provide a Tesla valve-shaped tunnel that can be spliced ​​together, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a Tesla valve-shaped tunnel capable of being spliced, comprising plates, columns, and wall panels, wherein the plates include a top plate and a bottom plate of the splicable Tesla valve-shaped tunnel, and the plates have mutually cooperating locking plates and slots. The corresponding top and bottom plates in the vertical direction have the same shape. The columns are provided with protrusions that cooperate with the plates, and the columns are also provided with sliding grooves. The wall panels are provided with sliders that match the sliding grooves on the columns. The plates, columns, and wall panels are spliced ​​together to form a Tesla valve-shaped tunnel by overlapping and cooperating with each other. The tunnel is divided into multiple groups of Tesla valve-shaped tunnels. Each group of Tesla valve-shaped tunnels includes a straight section and a bend. The shock wave intake direction is the first end of a group of Tesla valve-shaped tunnels, and the part in the bend exhaust direction that connects to the straight section is the last end of a group of Tesla valve-shaped tunnels. The last end of the previous group is the first end of the next group.

[0006] Furthermore, the board also includes square boards, triangular boards, and arc-shaped boards. The square boards can be connected front and back by snapping together. The long side of the triangular board is twice the length of the side of the square board, and its long side can be connected to the side of the square board by snapping together. The angle between the two straight sides of the arc-shaped board is 60 degrees. Three arc-shaped boards can be spliced ​​together to form a semi-circular arc and can be connected to the square board by snapping together.

[0007] Furthermore, the square plate includes a front end plate, a rear end plate slot, a side plate slot, a front end through hole, and a rear end through hole. Two square plates are respectively connected by the front end plate of one square plate and the rear end plate slot of the other square plate. The square plate is connected to the straight edge of the arc-shaped plate through the rear end plate slot. The square plate is connected to the long side of the triangular plate through the side plate slot. The front end plate is divided into two parallel parts that are identical and have four vertically penetrating front end through holes in pairs. The groove height of the rear end plate slot is the sum of the height of the two parallel protruding parts of the front end plate and the distance between them. The protruding part of the rear end plate slot has four vertically penetrating rear end through holes in pairs.

[0008] Furthermore, the triangular plate includes a long-side locking plate, a short-side locking groove, a long-side through hole, and a short-side through hole. The triangular plate is connected to the side locking grooves of two square plates through the long-side locking plate, and the triangular plate is connected to the front locking plate of the square plates through the short-side locking groove. The long-side locking plate is provided with three long-side through holes, and the short-side locking groove is provided with four short-side through holes that are vertically connected in pairs.

[0009] Furthermore, the arc-shaped plate includes a first arc-shaped plate and a second arc-shaped plate, wherein the first arc-shaped plate is placed at both ends of the arc-shaped tunnel and is respectively snapped and connected to two square plates, and the second arc-shaped plate is placed between the two first arc-shaped plates and is snapped and connected to them.

[0010] Furthermore, the first arc-shaped plate includes a front-end retaining plate, a rear-end retaining groove, a front-end through hole, and a rear-end through hole. The first arc-shaped plate is interlocked with the rear-end retaining groove on the square plate via the front-end retaining plate, and the front-end retaining plate has four vertically penetrating front-end through holes in pairs. The first arc-shaped plate is interlocked with the second arc-shaped plate via the rear-end retaining groove, and the protruding portion of the rear-end retaining groove has four vertically penetrating rear-end through holes in pairs. The second arc-shaped plate includes a front-end retaining plate, wherein front-end retaining plates are provided at both ends of the second arc-shaped plate, and are interlocked with the two first arc-shaped plates via the front-end retaining plates.

[0011] Furthermore, the column includes a pin, a pin threaded hole, and a shaped sliding groove. Two pins are respectively provided at the upper and lower ends of the column, and the pins are provided with pin threaded holes. The column is slidably connected to the through hole on the plate through the pins. The column is provided with multiple shaped sliding grooves, and the column is slidably connected to the wall panel through the shaped sliding grooves.

[0012] Furthermore, the wall panel includes a first straight-edge wall panel, a second straight-edge wall panel, an outer arc wall panel, an inner arc wall panel, and a shaped slider. The wall panel has shaped sliders at both ends that match the shaped grooves on the column. The first straight-edge wall panel is connected to the straight-edge portion of the tunnel via the shaped sliders and the shaped grooves on the column. The second straight-edge wall panel is connected to the long right-angle side of the triangular plate in the tunnel via the shaped sliders. The outer arc wall panel is connected to the long outer arc side of the tunnel via the shaped sliders and the shaped grooves on the column. The inner arc wall panel is connected to the short inner arc side of the tunnel via the shaped sliders and the shaped grooves on the column.

[0013] Furthermore, the tunnel also includes bolts and washers, wherein the bolts and washers are threadedly connected to the pins in the pin holes of the plate on the upper surface of the tunnel.

[0014] Compared with existing technologies, the tunnel provided by this technology has the technical feature of being able to be arbitrarily spliced, suitable for various terrain structures, and adopts the Tesla valve form, which can minimize the damage of the explosion shock wave to the tunnel structure and equipment inside the tunnel. It is highly economical, requires little maintenance investment, and can be repeatedly disassembled and reused. Attached Figure Description

[0015] Figure 1 Schematic diagram of the Tesla valve-shaped tunnel and the direction of the shock wave.

[0016] Figure 2 Schematic diagram of three types of panels that can be spliced ​​together.

[0017] Figure 3 A schematic diagram of a column with irregularly shaped grooves.

[0018] Figure 4 Schematic diagrams of three types of wall panels.

[0019] Figure 5 Schematic diagram of slab-column wall construction.

[0020] Figure 6 Schematic diagram of the model's scale.

[0021] Figure 7 A schematic diagram of the shock wave overpressure time history curve at a distance of 6m from the detonation point.

[0022] Figure 8 A schematic diagram of the shock wave overpressure time history curve at a distance of 8.45m from the detonation point.

[0023] Figure 9 A schematic diagram of the shock wave overpressure time history curve at a distance of 10.9m from the detonation point.

[0024] Figure 10 A schematic diagram of the shock wave overpressure time history curve at a distance of 13.35m from the detonation point.

[0025] Figure 11 A schematic diagram of the shock wave overpressure time history curve at a distance of 15.8m from the detonation point.

[0026] Figure 12 A schematic diagram of the shock wave overpressure time history curve at a distance of 18.8m from the detonation point.

[0027] Figure 13 A schematic diagram of the shock wave overpressure time history curve at a distance of 21.8m from the detonation point.

[0028] Figure 14 A comparative diagram of the overpressure peak distribution in each pipeline.

[0029] Figure 15 A schematic diagram comparing the distribution of overpressure in each pipeline over time.

[0030] Figure 16 A schematic diagram showing the distribution of peak overpressure decay rates in different pipelines.

[0031] Among them, 1. Plate, 2. Column, 3. Wall panel, 1-A. Square plate, 1-B. Triangular plate, 1-C. Arc-shaped plate, A1. Front end plate, A2. Rear end slot, A3. Side slot, A4. Front end through hole, A5. Rear end through hole, B1. Long side plate, B2. Short side slot, B3. Long side through hole, B4. Short side through hole, 1-C-1. First arc-shaped plate, 1-C-2. Second arc-shaped plate, 2-1. Pin, 2-2. Pin screw hole, 2-3. Irregular groove, 4. Bolt, 5. Washer. Detailed Implementation

[0032] This embodiment provides a Tesla valve-shaped tunnel that can be spliced ​​together, including a plate 1, a column 2, and a wall panel 3. The plate 1 is the top and bottom plate of the splicable Tesla valve-shaped tunnel, that is, the top and bottom plates in the vertical direction of the tunnel are exactly the same. This can reduce manufacturing costs, and at the same time, because there are many identical parts, transportation costs can also be reduced.

[0033] The Tesla valve is a unidirectional airflow valve with no moving parts, achieving unidirectional airflow without requiring any input energy. Its forward and reverse flow differ significantly, eliminating the need for internal mechanical movement. It utilizes its spatial structure to propel gas flow, accelerating it through physical mechanisms and reducing energy loss during transport. Its fixed geometric shape overcomes the shortcomings of traditional valves, which are prone to damage due to moving parts, and can replace movable valves. Due to the fluid's inertia, flow resistance varies in different directions, achieving unidirectional flow. In practice, Tesla valves are primarily used to control water flow. In this invention, its unique shape is used to counteract the shock wave generated by an explosion. The shock wave propagates in the Tesla-shaped pipe, splitting at the first fork, dividing the energy into two parts. The overpressure value in the straight pipe is significantly reduced. After impacting the pipe, the shock wave produces numerous reflections on the wall surface. The smooth wall surface rapidly conducts the concentrated shock wave forward along the tunnel axis. The peak overpressure in subsequent tunnel sections is lower than that in long, straight pipes; this is due to the dissipation effect of the bend in the pipe. The shunted shock waves meet and reflect at the bend in the pipe. The reflected shock waves entering the bend and propagating along the straight pipe superimpose to form the first overpressure peak, which is higher than the second. The superimposed portion of the shock wave propagates forward and enters the next bend, where it is reflected again. After multiple reflections, the initial front of the shock wave gradually stabilizes and continues to propagate forward as a plane wave. This effectively counteracts most of the explosive shock wave.

[0034] Reference Figure 1 and Figure 2 The tunnel is divided into multiple sets of Tesla valve-shaped tunnels. Each set of Tesla valve-shaped tunnels includes a straight section and a bend. The shock wave intake direction is the first end of a set of Tesla valve-shaped tunnels, and the part where the bend connects to the straight section in the exhaust direction is the last end of a set of Tesla valve-shaped tunnels. The last end of one set is the first end of the next set. Plate 1 includes a top plate and a bottom plate of Tesla valve-shaped tunnels that can be spliced ​​together. Plate 1 has interlocking plates and slots. Corresponding top and bottom plates in the vertical direction have the same shape. After the plates 1 are interlocked, the through holes at the connection points of the two plates 1 are connected by columns 2, thereby strengthening the overall tunnel strength.

[0035] Reference Figure 3 The column 2 is provided with a sliding groove, and the wall panel 3 is provided with a slider that matches the sliding groove on the column 2, so that the wall panel 2 can be locked between the two columns 2.

[0036] Reference Figure 5Plate 1 is then snapped onto column 2, forming a whole with the plate 1 below it, column 2, and wall plate 3 through snapping and overlapping. That is, the top plate presses on column 2, column 2 presses on the bottom plate, and wall plate 3 is slidably connected to the two columns 2 through a slider. At the same time, its upper surface is pressed by the top plate, and its lower surface is pressed on the bottom plate. Plate 1, column 2, and wall plate 3 are spliced ​​together to form a Tesla valve-shaped tunnel shape through overlapping and cooperation. The Tesla valve-shaped tunnel shape can greatly reduce the damage caused by the blast shock wave to the tunnel and the equipment inside the tunnel.

[0037] Reference Figure 2 The plate 1 also includes a square plate 1-A, a triangular plate 1-B, and an arc-shaped plate 1-C. The square plate 1-A can be connected by snap-fitting, and can be freely changed according to the required length of the tunnel, making it highly adaptable to the environment.

[0038] Reference Figure 2 The length of the long side of the triangular plate 1-B is twice the length of the side of the square plate 1-A, and its long side can be snapped into the side of the square plate 1-A, forming a 30-degree angle with plate 1, thus forming a corner angle in the shape of a Tesla valve.

[0039] Reference Figure 2 The included angle between the two straight sides of the arc-shaped plate 1-C is 60 degrees. The three arc-shaped plates 1-C can be spliced ​​together to form a semi-circular arc, which can form the arc curvature of a Tesla valve, and can be snapped together with the square plate 1-A.

[0040] Reference Figure 2 The square plate 1-A includes a front end plate A1, a rear end slot A2, a side slot A3, a front end through hole A4, and a rear end through hole A5. Two square plates 1-A are connected by the front end plate A1 of one square plate 1-A and the rear end slot A2 of the other square plate 1-A. The square plate 1-A is connected to the straight edge of the arc-shaped plate 1-C by the rear end slot A2. The square plate 1-A is connected to the long side of the triangular plate 1-B by the side slot A3. Thus, they can be spliced ​​together to form a Tesla valve-shaped tunnel.

[0041] Reference Figure 2 The front plate A1 is divided into two parallel parts, which are identical. The two protrusions are hollow in the middle, and the hollow part is connected to the side slot A3, which is used to attach the long side plate B1 on the long side of the triangular plate 1-B. It is also provided with four front through holes A4 that are vertically connected in pairs. The through holes can be used to assemble the tunnel structure with the column 2.

[0042] Reference Figure 2The height of the groove in the rear end slot (A2) is the sum of the height of the two parallel parts of the front end plate (A1) and the distance between them. This allows the rear end slot (A2) to be engaged with the front end plate (A1). The protruding part of the rear end slot (A2) is provided with four vertically penetrating rear end through holes (A5). After the front end plate (A1) and the rear end slot (A2) are engaged with each other, the through holes on them will overlap vertically. The overlapping through holes, together with the column 2, can form a unit in the entire tunnel structure, namely a bottom plate, two columns 2, and a top plate. By splicing them together, the entire tunnel structure can be formed, and specific changes can be made according to the required length, angle, and other factors.

[0043] Reference Figure 2 The triangular plate 1-B includes a long-side clamping plate B1, a short-side clamping groove B2, a long-side through hole B3, and a short-side through hole B4. The triangular plate 1-B is connected to the side clamping grooves A3 of two square plates 1-A via the long-side clamping plate B1, and to the front clamping plate A1 of the square plate 1-A via the short-side clamping groove B2. The long-side clamping plate B1 has three long-side through holes B3, and the short-side clamping groove B2 has four short-side through holes B4 that are vertically connected in pairs. After the triangular plate 1-B and the square plate 1-A are connected, the long-side through holes B3 are connected to the side clamping grooves A3, and the short-side clamping grooves B2 are connected to the front clamping plate A1. The through holes in the same vertical direction will form a vertically connected state after being connected. The overlapping through holes, together with the column 2, can form a 30-degree tunnel corner structure.

[0044] Reference Figure 2 The arc-shaped plate 1-C includes a first arc-shaped plate 1-C-1 and a second arc-shaped plate 1-C-2. The first arc-shaped plate 1-C-1 is placed at both ends of the arc-shaped tunnel and is respectively snapped and connected to two square plates 1-A. The second arc-shaped plate 1-C-2 is placed between the two first arc-shaped plates 1-C-1 and is snapped and connected to them, thus forming the arc-shaped structure of the tunnel.

[0045] Reference Figure 2 The first arc-shaped plate 1-C-1 includes a front end clamping plate A1, a rear end clamping groove A2, a front end through hole A4, and a rear end through hole A5. The first arc-shaped plate 1-C-1 is connected to the rear end clamping groove A2 on the square plate 1-A by the front end clamping plate A1. The front end clamping plate A1 is provided with four front end through holes A4 that are vertically connected in pairs. The first arc-shaped plate 1-C-1 is connected to the second arc-shaped plate 1-C-2 by the rear end clamping groove A2. The protruding part of the rear end clamping groove A2 is provided with four rear end through holes A5 that are vertically connected in pairs. Thus, the first arc-shaped plate 1-C-1 can be connected to the square plate 1-A by clamping.

[0046] Reference Figure 2 The second arc-shaped plate 1-C-2 includes a front end clamping plate A1, wherein the front end clamping plate A1 is provided at both the front and rear ends of the second arc-shaped plate 1-C-2, and is clamped and connected to the two first arc-shaped plates 1-C-1 through the front end clamping plate A1.

[0047] Reference Figure 3 The column 2 includes a pin 2-1, a pin screw hole 2-2, and a shaped sliding groove 2-3. Two pins 2-1 are respectively provided at the upper and lower ends of the column 2. The pins 2-1 can be inserted into the through holes on the plate 1 and slidably connected with the plate 1.

[0048] Reference Figure 3 The pin 2-1 is provided with a pin screw hole 2-2. The column 2 is slidably connected to the through hole on the plate 1 through the pin 2-1. The column 2 forms a tunnel structure by pressing down the bottom plate with its own weight and the top plate above.

[0049] Reference Figure 3 , Figure 4 The column 2 is provided with multiple irregular sliding grooves 2-3, and the column 2 is slidably connected to the wall panel 3 through the irregular sliding grooves 2-3.

[0050] Reference Figure 4 The wall panel 3 includes a first straight-side wall panel 3-1, a second straight-side wall panel 3-2, an outer arc wall panel 3-3, an inner arc wall panel 3-4, and a shaped slider 31. The wall panel 3 has shaped sliders 31 at both ends that match the shaped grooves 2-3 on the column 2. The first straight-side wall panel 3-1 is connected to the straight-side portion of the tunnel via the shaped sliders 31 and the shaped grooves 2-3 on the column 2. The second straight-side wall panel 3-2 is connected to the long right-angle side of the triangular plate 1-B in the tunnel via the shaped sliders. The outer arc wall panel 3-3 is connected to the long outer arc side of the tunnel via the shaped sliders 31 and the shaped grooves 2-3 on the column 2. The inner arc wall panel 3-4 is connected to the short inner arc side of the tunnel via the shaped sliders 31 and the shaped grooves 2-3 on the column 2.

[0051] Reference Figure 3 The tunnel also includes bolts 4 and washers 5. Bolts 4 and washers 5 are threadedly connected to pins 2-1 in the pin holes 2-2 of the column 2 that are slidably connected to the through holes of the plate 1 on the upper surface of the tunnel. After the tunnel structure is built, washers 5 are installed on bolts 4 and bolts are driven into the exposed pin holes 2-2 on the top plate of the tunnel to increase the overall strength of the tunnel. Example 1

[0052] Reference Figure 6To investigate the impact of pipelines with self-dissipating structures on shock wave propagation, numerical simulations were conducted using the finite element simulation software LS-DYNA. Finite element models of tunnels with different shapes and uniform cross-sections were established, representing a long straight pipeline and a pipeline with a self-dissipating structure. The tunnel length was 21.8 m, and the cross-sectional dimensions were 0.6 m × 0.6 m. A blast source was placed at one end of the tunnel, and the shock wave overpressure time history curves at typical locations during the pipeline propagation were monitored.

[0053] According to the overpressure time history curves, the propagation trend of shock waves within pipes of different shapes is basically consistent. The shock wave front and the reflected waves from each wall surface act sequentially on each measuring point within the tunnel. The overpressure time history curves exhibit multi-peak overpressure characteristics. Due to the back-and-forth reflection of the reflected shock wave between the wall surface and the forward wavefront, the overpressure time history curve evolves into a regular plane wave along the propagation direction of the shock wave, in which the motion and changes of the reflected waves play a crucial role.

[0054] Reference Figures 7-13 The wavefront near the explosion source expanded rapidly, and wave reflection occurred at each wall surface. A first stage of positive overpressure formed 3 meters from the explosion source, with a peak overpressure height of (…). Figure 7 These peaks occur at different times. In the direction of shock wave propagation, as the distance from the epicenter increases, the first positive overpressure peak in the tunnel rapidly decreases, and the peaks formed by the shock wave reflected on the wall surface become prominent on the overpressure time history curve. The number and density of peaks in the first overpressure stage vary with distance. The overpressure time history curves at measuring points 3m-21.8m from the epicenter inside the pipeline reflect this process.

[0055] Reference Figure 14 , Figure 15 Based on the order and density of the overpressure waves formed by the reflected waves in the first positive overpressure section, the reflected waves are divided into different batches. During propagation in the pipeline, each batch of reflected waves continuously attenuates, the time interval between the appearance of adjacent batches gradually shortens, and the number of reflected waves in the first batch of positive overpressure section gradually increases. When the same batch of reflected waves attenuates, they gradually approach and superimpose on each other, while simultaneously moving towards the wavefront. The first few batches of reflected waves catch up with and superimpose on the forward wavefront, and the overpressure at the forward wavefront increases with increasing distance (from...). Figure 14 and Figure 15It can be seen that the first peak at a distance of 13.35m from the explosion source is higher than the peak at a distance of 10.9m. Compared with a long straight pipe, the difference in the overpressure time history curve of a Tesla valve-shaped pipe lies in the waveform of the overpressure value and the overpressure time history curve corresponding to the reflected wave. As time increases, the overpressure peak value of the Tesla valve-shaped pipe decreases. The bifurcated pipe reduces the overpressure fluctuation amplitude after the first positive overpressure segment, and the overpressure level stabilizes more quickly. When the shock wave propagates in the pipe in the form of a plane wave, the overpressure fluctuation over time under the influence of the bifurcated structure is greater than that of a long straight pipe, indicating that the shock wave attenuates faster in the Tesla valve-shaped pipe.

[0056] Reference Figure 13 , Figure 14 The simulated explosion shock wave overpressure data were analyzed and compared. Figure 13 , 14 The figure shows the distribution of shock wave overpressure peak values ​​and overpressure arrival times (with the arrival time of the first measuring point defined as time 0) at various measuring points in two types of pipelines. Under the same charge conditions, the incident overpressure peak value is lower in the rear part of the pipeline with a self-dissipating structure, the overpressure arrival time is later, and the shock wave propagation speed is slower.

[0057] The experimental and numerical simulation results were analyzed, and the peak overpressure attenuation rate of the shock wave in the pipeline with a self-dissipating structure was calculated. The peak overpressure attenuation rate was calculated using the following formula. Overpressure peak attenuation rate = In the formula, the overpressure peak value at the measuring point closest to the explosion source is taken as the overpressure peak value at each measuring point.

[0058] Reference Figure 15 The distribution of overpressure peak attenuation rate of explosion shock waves in different pipelines is shown. At all measuring points, the overpressure peak attenuation rate in the Tesla valve-shaped pipeline is significantly greater than that in the long straight pipeline, indicating that the former has better wave damping performance.

Claims

1. A Tesla valve-shaped tunnel capable of being assembled, characterized in that, Includes slabs (1), columns (2), and wall panels (3), among which Plate (1) includes a top plate and a bottom plate of a Tesla valve-shaped tunnel that can be spliced ​​together, and plate (1) has interlocking plates and slots. The top plate and bottom plate have the same shape in the vertical direction. The column (2) is provided with protrusions that cooperate with the plate (1), and the column (2) is provided with a sliding groove. The wall panel (3) is equipped with a slider that matches the groove on the column (2). The slab (1), column (2), and wall panel (3) are spliced ​​together in a Tesla valve-shaped tunnel form by overlapping and mating with each other. The tunnel is divided into multiple sets of Tesla valve-shaped tunnels. Each set of Tesla valve-shaped tunnels includes a straight section and a bend. The direction of shock wave intake is the beginning of a set of Tesla valve-shaped tunnels, and the part of the bend that connects to the straight section is the end of a set of Tesla valve-shaped tunnels. The end of one set is the beginning of the next set. The types of board (1) are divided into square board (1-A), triangular board (1-B), and arc-shaped board (1-C), among which The square plates (1-A) can be interlocked in a specified direction. The longer side of the triangular plate (1-B) is twice the length of the side of the square plate (1-A), and its longer side can be snapped together with the side of the square plate (1-A). The included angle between the two straight sides of the arc-shaped plate (1-C) is 60 degrees. The three arc-shaped plates (1-C) can be spliced ​​together to form a semi-circular arc and can be snapped together with the square plate (1-A).

2. The Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The square plate (1-A) includes a front-end retaining plate (A1), a rear-end retaining slot (A2), a side retaining slot (A3), a front-end through hole (A4), and a rear-end through hole (A5), wherein... Two square plates (1-A) are respectively connected by a front locking plate (A1) of one square plate (1-A) and a rear locking slot (A2) of the other square plate (1-A). The square plate (1-A) is connected to the straight edge of the arc-shaped plate (1-C) via a rear end slot (A2). The square plate (1-A) is connected to the long side of the triangular plate (1-B) via a side slot (A3). The front plate (A1) is divided into two parallel parts, which are identical, and each part has four front through holes (A4) that are vertically connected in pairs. The height of the groove in the rear slot (A2) is the sum of the height of the two parallel parts of the front plate (A1) and the distance between them. The protruding part of the rear slot (A2) is provided with four rear through holes (A5) that are vertically connected in pairs.

3. The Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The triangular plate (1-B) includes a long-side retaining plate (B1), a short-side retaining groove (B2), a long-side through hole (B3), and a short-side through hole (B4), wherein, The triangular plate (1-B) is connected to the two square plates (1-A) by interlocking with each other through the side slots (A3) of the long side plate (B1). The triangular plate (1-B) is connected to the front end plate (A1) of the square plate (1-A) by means of the short side slot (B2). The long-side plate (B1) has three through holes (B3) along its long side. The short side slot (B2) is provided with four short side through holes (B4) that are vertically connected in pairs.

4. The Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The arc-shaped plate (1-C) includes a first arc-shaped plate (1-C-1) and a second arc-shaped plate (1-C-2), wherein The first arc-shaped plate (1-C-1) is placed at both ends of the arc-shaped tunnel and is respectively snapped into connection with two square plates (1-A). The second arc-shaped plate (1-C-2) is placed between the two first arc-shaped plates (1-C-1) and snapped together with them.

5. A Tesla valve-shaped tunnel capable of being spliced ​​according to claim 4, characterized in that, The first arc-shaped plate (1-C-1) includes a front end retaining plate (A1), a rear end retaining groove (A2), a front end through hole (A4), and a rear end through hole (A5), wherein The first arc-shaped plate (1-C-1) is connected to the rear end slot (A2) on the square plate (1-A) by the front end plate (A1), and the front end plate (A1) is provided with four front end through holes (A4) that are vertically connected in pairs. The first arc-shaped plate (1-C-1) is connected to the second arc-shaped plate (1-C-2) by a rear end slot (A2), and the protruding part of the rear end slot (A2) is provided with four rear end through holes (A5) that are vertically connected in pairs. The second arc-shaped plate (1-C-2) includes a front end clamping plate (A1), wherein The second arc-shaped plate (1-C-2) has front end clamping plates (A1) at both ends, and is connected to the two first arc-shaped plates (1-C-1) by clamping the front end clamping plates (A1).

6. A Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The column (2) includes a pin (2-1), a pin screw hole (2-2), and a shaped groove (2-3), wherein The column (2) has two pins (2-1) at its upper and lower ends respectively. The pin (2-1) is provided with a pin screw hole (2-2). The column (2) is slidably connected to the through hole on the plate (1) via a pin (2-1). The column (2) is provided with multiple irregular sliding grooves (2-3), and the column (2) is slidably connected to the wall panel (3) through the irregular sliding grooves (2-3).

7. A Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The wall panel (3) includes a first straight-edge wall panel (3-1), a second straight-edge wall panel (3-2), an outer arc wall panel (3-3), an inner arc wall panel (3-4), and an irregularly shaped slider (31), wherein The wall panel (3) is provided with irregularly shaped sliders (31) at both ends that match the irregularly shaped grooves (2-3) on the column (2). The first straight-edge wall panel (3-1) is connected to the straight-edge part inside the tunnel by a non-circular slider (31) and a non-circular groove (2-3) on the column (2). The second straight-edge wall panel (3-2) is connected to the long right-angle side of the triangular panel (1-B) inside the tunnel by a non-circular slider. The outer arc wall panel (3-3) is connected to the outer arc side of the inner arc side of the tunnel by a special-shaped slider (31) and a special-shaped groove (2-3) on the column (2). The inner arc wall panel (3-4) is connected to the short inner arc side of the tunnel by the irregular sliding block (31) and the irregular sliding groove (2-3) on the column (2).

8. A Tesla valve-shaped tunnel capable of being spliced ​​according to claim 1, characterized in that, The tunnel also includes bolts (4) and washers (5), wherein Bolt (4), washer (5) and the through hole of plate (1) on the upper surface of the tunnel are slidably connected by the pin (2-1) on the column (2) and the pin screw hole (2-2) in the column (2).

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