Integral V-shaped slope tunnel fire simulation experiment platform

Abstract

The utility model discloses an integral V-shaped slope tunnel fire simulation experiment platform, and belongs to the field of tunnel engineering fire simulation experiments. A tunnel model main body of the experiment platform comprises a first sub-model and a second sub-model which are connected through a grade change point connecting device. The first sub-model and the second sub-model are each of a hollow structure defined by a top plate, a bottom plate, a front side wall and a rear side wall. And the first sub-model and the second sub-model are fixed on the steel rack. The outer side of the steel rack is provided with a rack movable hinge used for being connected with a pull rod connecting piece, and the pull rod connecting piece is a rectangular frame arranged outside the first sub-model or the second sub-model in a sleeving mode. The pull rod connecting pieces are connected through a telescopic pull rod device, and the gradient of the model is changed through stretching. The experiment platform further comprises a fire source simulation device, a ventilation and smoke exhaust device and a measuring and recording device. The experimental platform is wider in application scene, simple to operate, safe and reliable, and has very high repeatability.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel engineering fire simulation experiments, and particularly relates to an integral V-shaped slope tunnel fire simulation experiment platform. Background Technique

[0002] In China, the construction of tunnel engineering is developing from traditional mountainous areas to deep sea areas, which has brought a large number of cross-river (sea) channel constructions. Most of these channels adopt a V-shaped longitudinal section design. However, tunnel engineering belongs to a long and narrow enclosed space, and its ventilation and smoke exhaust capacity is weak. Once a fire occurs, it is extremely easy to cause serious casualties and property losses. The elevation difference between the fire source point and the tunnel inlet and outlet will generate a chimney effect, which will form an induced air flow in the V-shaped slope tunnel, thus affecting the control of smoke and the evacuation of personnel, and increasing the fire risk.

[0003] Therefore, it is necessary to design a fire simulation experiment platform for V-shaped slope tunnels to simulate various fire scenarios in order to study the characteristics of fire smoke transport. When the scale of the fire source is known, the intensity of the chimney effect in the V-shaped slope tunnel mainly depends on the elevation difference between the fire source point and the tunnel inlet and outlet, and this elevation difference is mainly determined by the slope and length between the fire source point and the tunnel inlet and outlet. Due to terrain conditions, there are various complex combinations of the tunnel slopes and lengths at both ends of the actual engineering variable slope points. At present, most patents mainly change the elevation difference by adjusting the slope. For example, the Chinese utility model patent applications with publication numbers CN115201405A and CN114446134A respectively disclose a variable form long and narrow space fire experiment simulation device under longitudinal ventilation, and a fire experiment platform for an underwater "V" - shaped slope tunnel. The above devices or platforms all achieve different combinations of V-shaped slopes by adjusting the heights of the two side model sections, and cannot consider the influence of the tunnel length; at the same time, during the experiment, it is necessary to adjust the heights of the two side model sections simultaneously to achieve a specific slope combination (such as the slopes at both ends need to be kept consistent), and the adjustment process is complex and the precision control is difficult.

[0004] Therefore, it is urgent to develop a V-shaped slope tunnel fire simulation experiment platform that can simultaneously adjust the lengths and slopes of both ends of the tunnel to simulate a more extensive and actual engineering V-shaped slope tunnel fire. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies in the prior art and provide an integral V-shaped slope tunnel fire simulation experiment platform.

[0006] The specific technical solutions adopted by the utility model are as follows:

[0007] The utility model provides an integral V-shaped slope tunnel fire simulation experiment platform, which comprises a tunnel model main body, a steel bench, a telescopic pull rod device, a variable slope point connection device, a fire source simulation device, a ventilation and smoke exhaust device and a measurement and recording device;

[0008] The tunnel model main body includes two symmetric first sub-models and second sub-models on the left and right; the first sub-model and the second sub-model are connected through a variable slope point connection device to form a V-shaped slope tunnel model with a variable angle; both the first sub-model and the second sub-model are surrounded by a top plate, a bottom plate, a front side wall and a rear side wall to form a hollow structure; the front side wall faces the user side of the simulation experiment platform;

[0009] The bottom plates of the first sub-model and the second sub-model are respectively fixed on the steel bench, and the width of the steel bench is greater than the width of the bottom plate; the two steel benches are rotationally connected through a bench fixed hinge; a support for supporting the tunnel model main body is arranged below the bench fixed hinge;

[0010] A bench movable hinge for connecting a pull rod connecting piece is arranged at the outer end of the steel bench far away from the bench fixed hinge; the pull rod connecting piece is a rectangular frame sleeved outside the first sub-model or the second sub-model, and includes a first rod, a second rod, a third rod and a fourth rod; the third rod is rotationally connected with the bench movable hinge, and the third rod is arranged below the first sub-model or the second sub-model; the second rod and the fourth rod are respectively located outside the front side wall and the rear side wall of the first sub-model or the second sub-model; the first rod is arranged above the first sub-model or the second sub-model, and the first rods on both sides are connected with the telescopic pull rod device through a pull rod movable hinge, and the slope of the first sub-model or the second sub-model is changed by the telescopic movement of the telescopic pull rod device;

[0011] The fire source simulation device includes a gas fire source simulator, a gas supply hose and a gas storage tank; the gas fire source simulator is arranged inside the variable slope point connection device; the gas fire source simulator is connected with the gas storage tank through the gas supply hose;

[0012] The ventilation and smoke exhaust device includes an axial flow fan, a frequency converter and a ventilation hose; an air outlet for ventilation is opened at one end of the top plate of the first sub-model far away from the middle variable slope point connection device; the air outlet is connected with the axial flow fan through the ventilation hose, and the wind speed of the axial flow fan is adjusted through the frequency converter;

[0013] The measurement and recording device includes a collection device and a number of first thermocouple probes, second thermocouple probes, and wind speed measurement probes; the first thermocouple probes are arranged along the length direction of the first sub-model or the second sub-model; the second thermocouple probes are arranged on the cross-section perpendicular to the length direction of the first sub-model and the second sub-model; the wind speed measurement probes are arranged near the cross-section where the second thermocouple probes are arranged; the first thermocouple probes, the second thermocouple probes, and the wind speed measurement probes are all connected to the collection device through data lines.

[0014] Preferably, in the first sub-model or the second sub-model, the arrangement spacing of the first thermocouple probes near the gas fire source simulator is smaller than that far from the gas fire source simulator.

[0015] Preferably, on the cross-section of the first sub-model or the second sub-model, the spacing of the second thermocouple probes near the roof is smaller than that near the bottom plate; the spacing between the wind speed measurement probe and the adjacent second thermocouple probe is 10 - 15 cm.

[0016] Preferably, the bottom of the gas fire source simulator is provided with a bracket with adjustable height.

[0017] Preferably, a rotameter, a pressure gauge, a pressure reducing valve, and a switch controller are provided on the gas supply hose to facilitate the control of the fire source simulation device.

[0018] Preferably, the length ranges of both the first sub-model and the second sub-model are 2 - 6 m; the roof, bottom plate, and rear side wall of the first sub-model and the second sub-model are all made of high-temperature resistant steel plates; the front side wall of the first sub-model and the second sub-model is made of high-temperature resistant transparent glass, which is convenient for users to observe the flame shape and the development trend of the smoke.

[0019] Preferably, the telescopic pull rod device adopts a hydraulic telescopic rod.

[0020] Preferably, the variable slope point connection device adopts a telescopic flame retardant connecting pipe.

[0021] Preferably, the steel bench is composed of two horizontally arranged bench beams and two vertically arranged bench beams as a whole; the bench beams are made of steel pipes.

[0022] Preferably, a sealing strip for ensuring airtightness is provided at the connection of the first sub-model, the second sub-model and the variable slope point connection device.

[0023] The utility model has the following beneficial effects compared with the prior art:

[0024] (1) On the sub-models on both sides of the tunnel model main body provided by the present utility model, there are frame-shaped tie rod connectors, and a telescopic tie rod device is arranged between the connectors on both sides. The frame-shaped tie rod connectors are arranged on the periphery of the sub-model to avoid the situation of poor airtightness caused by opening holes on the sub-model for connection;

[0025] (2) The tunnel model main body provided by the present utility model can be composed of multiple standard segments spliced together, realizing the coordinated adjustment of the lengths and slopes of the tunnels at both ends, so as to be able to simulate more diverse V-shaped slope tunnel fire scenarios. Secondly, by connecting the two ends of the tunnel model main body through a telescopic tie rod device, the tunnel slope can be adjusted integrally, and then a specific tunnel fire scenario with a fixed sum of slopes on both sides can be simulated.

[0026] (3) The two groups of sub-models of the tunnel model main body provided by the present utility model are connected by hinges, ensuring the integrity of the model during the slope or length adjustment process, and at the same time making the adjustment operation more convenient.

[0027] (4) The experimental platform proposed by the present utility model can simulate the process of smoke transport in a V-shaped slope tunnel fire under natural ventilation and mechanical ventilation conditions. This not only has a wider application scenario, but also is simple to operate, safe and reliable, and has a high repeatability. Description of the Drawings

[0028] Figure 1 is the front view of the V-shaped slope tunnel fire simulation experimental platform provided by this embodiment;

[0029] Figure 2 is the top view of the V-shaped slope tunnel fire simulation experimental platform provided by this embodiment;

[0030] In the figure: tunnel model main body 1, steel platform 2, platform beam 21, platform movable hinge 22, platform fixed hinge 23, support 24, telescopic tie rod device 3, tie rod movable hinge 31, tie rod connector 32, first rod 321, second rod 322, third rod 323, fourth rod 324, variable slope point connection device 4, sealing strip 41, gas fire source simulator 51, air supply hose 52, rotameter 53, pressure gauge 54, pressure reducing valve 55, switch controller 56, gas storage tank 57, axial flow fan 61, frequency converter 62, ventilation hose 63, air outlet 64, first thermocouple probe 71, second thermocouple probe 72, wind speed measurement probe 73, acquisition device 74. Detailed Embodiments

[0031] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. The technical features in various embodiments of the present utility model can be combined correspondingly without conflict.

[0032] In the description of the present utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, that is, there is an intermediate element. On the contrary, when an element is referred to as being "directly" connected to another element, there is no intermediate element.

[0033] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features.

[0034] As Figure 1 shown, in a preferred embodiment of the present utility model, an integral V-shaped slope tunnel fire simulation experimental platform is provided. The tunnel fire simulation experimental platform includes a tunnel model main body 1, a steel bench 2, a telescopic tie rod device 3, a variable slope point connection device 4, a fire source simulation device, a ventilation and smoke exhaust device, and a measurement and recording device.

[0035] In the simulation experimental platform provided by the present utility model, the tunnel model main body 1 includes two first sub-models and second sub-models that are symmetric left and right. In this embodiment, both the first sub-model and the second sub-model are composed of two 100-cm-long standard segments connected by flange connectors. The width of the standard segment is 40 cm, and the height is 20 cm. It should be noted that the first sub-model and the second sub-model can adopt a complete pipeline or be spliced by several standard segments through flange connectors. The flange connection part needs to be sealed with high-temperature-resistant sealant to prevent air leakage or smoke leakage.

[0036] In this embodiment, the lengths of both the first sub-model and the second sub-model are 2 m. Those skilled in the art can also design a model with a reasonable length according to actual needs. However, considering the laboratory environment, the lengths of the first sub-model and the second sub-model are considered to be in the range of 2 - 6 m.

[0037] In the simulation experiment platform provided by the present utility model, both the first sub-model and the second sub-model are enclosed by a top plate, a bottom plate, a front side wall and a rear side wall to form a hollow structure, wherein the front side wall faces the user side of the simulation experiment platform. In this embodiment, the top plate, the bottom plate and the rear side wall are all made of 4-mm high-temperature resistant steel plates, and the front side wall is made of 8-mm high-temperature resistant transparent glass, which is convenient for users to observe the flame shape and the development trend of smoke. It should be noted that those skilled in the art can select high-temperature resistant steel plates and high-temperature resistant transparent glass with appropriate thicknesses according to actual needs.

[0038] In the simulation experiment platform provided by the present utility model, the first sub-model and the second sub-model are connected by a variable slope point connecting device 4 to form a V-shaped slope tunnel model with a variable angle. It should be noted that the variable slope point connecting device 4 is a foldable and bendable structure, so that a soft connection is formed between the first sub-model and the second sub-model, realizing the smooth transition of the first sub-model and the second sub-model on both sides of the tunnel model main body 1 at the variable slope point.

[0039] In order to ensure the airtightness of the overall model, a sealing strip 41 is provided at the connection between the first sub-model, the second sub-model and the variable slope point connecting device 4. In this embodiment, the variable slope point connecting device 4 is made of a retractable flame-retardant connecting pipe. In this embodiment, the lengths of both sides of the variable slope point connecting device 4 are 20 cm.

[0040] In an actual tunnel, due to differences in terrain conditions and traffic demands, the slopes and lengths of both sides of the V-shaped slope tunnel are different. In order to better fit the actual engineering design and obtain V-shaped tunnel fire scenarios with different slope and length combinations, the bottom plates of the first sub-model and the second sub-model are respectively fixed on the steel platform 2, and the width of the steel platform 2 is greater than the width of the bottom plate. To ensure the overall stability of the steel platform 2, in this embodiment, the steel platform 2 is composed of two horizontally arranged platform beams 21 and two vertically arranged platform beams 21 to form a whole, and the platform beams 21 are all steel pipes. And, in this embodiment, the width of the steel platform 2 is 5 cm larger than the overall width of the tunnel model main body 1.

[0041] In the simulation experiment platform provided by the present utility model, a rotational connection is formed between the two steel platforms 2 through a platform fixed hinge 23. A support 24 for supporting the tunnel model main body 1 is provided below the platform fixed hinge 23.

[0042] As Figure 2 shown, in the simulation experiment platform provided by the present utility model, a platform movable hinge 22 for connecting a tie rod connecting member 32 is provided at the outer end of the steel platform 2 away from the platform fixed hinge 23.

[0043] The pull rod connecting member 32 is a rectangular frame sleeved outside the first sub-model or the second sub-model, and includes a first rod member 321, a second rod member 322, a third rod member 323, and a fourth rod member 324; the third rod member 323 is rotatably connected to the bench movable hinge 22, and the third rod member 323 is arranged below the first sub-model or the second sub-model; the second rod member 322 and the fourth rod member 324 are respectively located outside the front side wall and the rear side wall of the first sub-model or the second sub-model; the first rod member 321 is arranged above the first sub-model or the second sub-model, and the first rod members 321 on both sides are connected by a pull rod movable hinge 31 to the telescopic pull rod device 3, and the slope of the first sub-model or the second sub-model is changed by the telescopic movement of the telescopic pull rod device 3.

[0044] In this embodiment, the telescopic pull rod device 3 adopts a hydraulic telescopic rod. The inherent length of the hydraulic telescopic rod is 150 cm, and the length of the pull rod connecting member 32 is 40 cm. Therefore, the telescopic length can be calculated by the cosine theorem.

[0045] In the simulation experiment platform provided by the present utility model, the fire source simulation device includes a gas fire source simulator 51, a gas supply hose 52, and a gas storage tank 57. The gas fire source simulator 51 is arranged inside the variable slope point connecting device 4. The gas fire source simulator 51 is connected to the gas storage tank 57 through the gas supply hose 52 in sequence through a rotameter 53, a pressure gauge 54, a pressure reducing valve 55, and a switch controller 56, which is convenient for controlling the fire source simulation device. In this embodiment, the gas fire source simulator 51 adopts a porous combustion simulator with more uniform combustion, and a bracket with adjustable height is provided at the bottom of the gas fire source simulator 51.

[0046] During the test, turn on the switch controller 56. After the pressure reducing valve 55 works normally, the valve of the rotameter 53 can be adjusted according to the test plan to provide gas at a corresponding flow rate. It should be noted that in the tunnel engineering fire simulation experiment, the gas fire source simulator can accurately control the power of the fire source, and simulate different intensity fire scenarios by adjusting the flow rate of the combustible gas, improving the flexibility and efficiency of the experiment.

[0047] In the simulation experiment platform provided by the present utility model, the ventilation and smoke exhaust device includes an axial flow fan 61, a frequency converter 62, and a ventilation hose 63. If it is necessary to study the influence of longitudinal ventilation on the characteristics of smoke transport, the ventilation and smoke exhaust device needs to be turned on.

[0048] In actual tunnel engineering, ventilation is usually provided on one side. Therefore, to conform to the actual project, at one end of the roof of the first sub-model in the present utility model, which is far from the intermediate grade change point connecting device 4, an air outlet 64 for ventilation is provided; the air outlet 64 is connected to an axial flow fan 61 through a ventilation hose 63, and the axial flow fan 61 adjusts the wind speed through a frequency converter 62. Before the formal fire experiment, a cold experiment should be carried out to test the cross-sectional wind speed in the tunnel model corresponding to the frequency of the axial flow fan 61, and then the frequency of the corresponding axial flow fan 61 can be adjusted according to the wind speed requirement of the formal experiment condition.

[0049] It should be noted that an axial flow fan sucks in gas from one side of the fan and discharges it from the other side by the rotation of the impeller. Since an axial flow fan can efficiently transport a large amount of gas from one place to another, in the tunnel fire simulation experiment platform, an axial flow fan is usually used for ventilation.

[0050] In the simulation experiment platform provided by the present utility model, the measurement and recording device includes a collection device 74 and a number of first thermocouple probes 71, second thermocouple probes 72, and wind speed measurement probes 73. The first thermocouple probes 71 are arranged along the length direction of the first sub-model or the second sub-model. The second thermocouple probes 72 are arranged on the cross-section perpendicular to the length direction of the first sub-model and the second sub-model. The wind speed measurement probes 73 are arranged near the cross-section where the second thermocouple probes 72 are arranged. The first thermocouple probes 71, the second thermocouple probes 72, and the wind speed measurement probes 73 are all connected to the collection device 74 through data lines.

[0051] In this embodiment, to improve the accuracy of the simulation, the arrangement spacing of the first thermocouple probes 71 near the gas fire source simulator 51 is smaller than that far from the gas fire source simulator 51. Specifically, the first thermocouple probes 71 are arranged at a distance of 2 cm from the roof, and in the area 50 cm away from the gas fire source simulator 51, the arrangement spacing of the first thermocouple probes 71 is 5 cm, and the designed spacing in the remaining area is 10 cm.

[0052] In this embodiment, the spacing of the second thermocouple probes 72 near the roof is smaller than the spacing of the second thermocouple probes 72 near the bottom plate. Specifically, a total of 7 second thermocouple probes 72 are arranged along the height direction of the first sub-model or the second sub-model on each cross-section. The spacing of the 4 second thermocouple probes 72 near the roof is 2 cm, and the spacing of the 3 second thermocouple probes 72 below is 3 cm.

[0053] In this embodiment, in order to ensure that the wind speed measurement probes 73 detect the corresponding data at the cross-section where the second thermocouple probes 72 are arranged, but reduce the influence of the second thermocouple probes 72 on the wind speed measurement probes 73, the wind speed measurement probes 73 are arranged at a distance of 10 cm from the second thermocouple probes 72.

[0054] The simulation experiment platform provided by the utility model, the telescopic rod device 3 and the first sub-model and the second sub-model form a triangle, and during the adjustment process of the slopes (tilt angles) of the two side sub-models, it can ensure that the sum of the slopes (tilt angles) remains unchanged. The relationship between the slope and the tilt angle is as follows:

[0055] γ = α + β (1)

[0056] i t = i α + i β = arctanα + arctanβ (2)

[0057] In the formula, ɑ and β are the tilt angles of the first sub-model and the second sub-model respectively, unit: degree; γ is the sum of the tilt angles of the first sub-model and the second sub-model, unit: degree; i α and i β are the slopes of the first sub-model and the second sub-model respectively; i t is the sum of the slopes of the two side sub-models.

[0058] The total length L of the telescopic rod device t is calculated as follows:

[0059]

[0060] In the formula: L α and L β are the lengths of the first sub-model and the second sub-model respectively.

[0061] The maximum stroke of the telescopic rod device needs to be designed according to the slope and length adjustment range of the tunnel model, specifically as follows:

[0062] L t,max = 2 × L β,max × cosβ min = 2 × L α,max × cosɑ min (4)

[0063] L r,max = L t,max - L s - 2L L (5)

[0064] In the formula, L t,max is the maximum length of the telescopic rod device, unit: cm; L α,max and L β,max are the maximum lengths of the first sub-model and the second sub-model respectively, unit: cm; ɑ min and β min are the minimum angles of the first sub-model and the second sub-model respectively, unit: degree; Lr,max is the maximum stroke of the telescopic rod device, unit: cm; L s is the structural length of the telescopic rod device itself, unit: cm; L L is the length of the rod connecting piece, unit: cm.

[0065] According to the simulated tunnel conditions, obtain the telescopic length of the telescopic rod device by referring to the calculation table in Table 1. The telescopic lengths under other different slope and length combinations can be obtained by simple programming calculation.

[0066] Table 1 Telescopic rod lengths at different slopes (angles)

[0067]

[0068]

[0069] The above-described embodiments are only a preferred solution of the present invention, but they are not intended to limit the present invention. Those of ordinary skill in the relevant technical field can still make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An integrated V-shaped slope tunnel fire simulation experimental platform, characterized in that: It comprises a tunnel model body (1), a steel stand (2), a retractable pull rod device (3), a slope change point connection device (4), a fire source simulation device, a ventilation and smoke exhaust device, and a measurement and recording device; The tunnel model body (1) comprises two left-right symmetrical first sub-models and second sub-models; the first sub-model and the second sub-model are connected via a slope change point connection device (4) to form a V-shaped slope tunnel model with variable angle; the first sub-model and the second sub-model are both surrounded by a top plate, a bottom plate, a front side wall and a rear side wall to form a hollow structure; the front side wall is facing the user side of the simulation experiment platform; The bottom plates of the first sub-model and the second sub-model are respectively fixed on a steel stand (2), and the width of the steel stand (2) is greater than the width of the bottom plate; the two steel stands (2) are rotatably connected via a stand fixing hinge (23); a support (24) for supporting the tunnel model body (1) is provided below the stand fixing hinge (23); The outer end of the steel frame (2) away from the frame fixed hinge (23) is provided with a frame movable hinge (22) for connecting a pull rod connecting member (32); the pull rod connecting member (32) is a rectangular frame sleeved outside the first sub-model or the second sub-model, and includes a first rod (321), a second rod (322), a third rod (323) and a fourth rod (324); the third rod (323) is rotatably connected to the frame movable hinge (22), and the third rod (323) The first sub-model or the second sub-model is arranged below the first sub-model; the second rod (322) and the fourth rod (324) are respectively located on the periphery of the front side wall and the rear side wall of the first sub-model or the second sub-model; the first rod (321) is arranged above the first sub-model or the second sub-model, and the first rods (321) on both sides are connected to the telescopic pull rod device (3) through a pull rod movable hinge (31), and the slope of the first sub-model or the second sub-model is changed by the telescopic pull rod device (3); The fire source simulation device comprises a gas fire source simulator (51), a gas supply hose (52) and a gas storage tank (57); the gas fire source simulator (51) is arranged inside the slope change point connection device (4); the gas fire source simulator (51) is connected to the gas storage tank (57) via the gas supply hose (52); The ventilation and smoke exhaust device comprises an axial flow fan (61), a frequency converter (62) and a ventilation hose (63); an air outlet (64) for ventilation is provided at one end of the top plate of the first sub-model away from the intermediate slope change point connection device (4); the air outlet (64) is connected to the axial flow fan (61) through the ventilation hose (63), and the wind speed of the axial flow fan (61) is adjusted through the frequency converter (62); The measuring and recording device comprises a collection device (74) and a plurality of first thermocouple probes (71), second thermocouple probes (72), and wind speed measuring probes (73); the first thermocouple probes (71) are arranged along the length direction of the first sub-model or the second sub-model; the second thermocouple probes (72) are arranged on a cross section perpendicular to the length direction of the first sub-model and the second sub-model; the wind speed measuring probe (73) is arranged near the cross section where the second thermocouple probes (72) are arranged; the first thermocouple probes (71), the second thermocouple probes (72), and the wind speed measuring probes (73) are all connected to the collection device (74) via data lines.

2. According to the integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1, in the first sub-model or the second sub-model, the arrangement spacing of the first thermocouple probe (71) close to the gas fire source simulator (51) is smaller than that away from the gas fire source simulator (51).

3. According to the integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1, on the cross section of the first sub-model or the second sub-model, the spacing between the second thermocouple probes (72) close to the top plate is smaller than the spacing between the second thermocouple probes (72) close to the bottom plate; the spacing between the wind speed measurement probe (73) and the adjacent second thermocouple probe (72) is 10 to 15 cm.

4. According to the integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1, a height-adjustable bracket is provided at the bottom of the gas fire source simulator (51).

5. According to the integrated V-shaped slope tunnel fire simulation experimental platform as described in claim 1, the air supply hose (52) is provided with a rotor flow meter (53), a pressure gauge (54), a pressure reducing valve (55) and a switch controller (56), so as to facilitate the control of the fire source simulation device.

6. The integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1 is characterized in that: The length range of the first sub-model and the second sub-model are both 2 to 6 meters; the top plate, bottom plate and rear side wall of the first sub-model and the second sub-model are all made of high-temperature resistant steel plates; the front side walls of the first sub-model and the second sub-model are made of high-temperature resistant transparent glass, which is convenient for users to observe the flame shape and smoke development trend.

7. The integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1 is characterized in that: The telescopic pull rod device (3) adopts a hydraulic telescopic rod.

8. According to the integrated V-shaped slope tunnel fire simulation experimental platform of claim 1, the slope change point connection device (4) adopts a retractable flame-retardant connection pipe.

9. The integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1 is characterized in that: The steel platform (2) is formed into a whole by two platform beams (21) arranged transversely and two platform beams (21) arranged longitudinally; the platform beams (21) are made of steel pipes.

10. The integrated V-shaped slope tunnel fire simulation experimental platform according to claim 1 is characterized in that: A sealing belt (41) is provided at the connection between the first sub-model, the second sub-model and the slope change point connection device (4) to ensure air tightness.

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