A tunnel simulation device with variable curvature radius for tunnels passing under transmission towers

Abstract

The present application discloses a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower, comprising: a model soil box, a pipeline, a transmission tower model, a water bag, a drainage system and an analysis module; one side wall of the model soil box is: a curvature adjustment system composed of an upper partition, a middle partition, a lower partition and a slot, and the middle partition is used for moving up and down or horizontally; one end of the pipeline is connected to the front box wall of the model soil box to achieve a fixing effect, and the other end is connected to the middle partition; by adjusting the position of the middle partition by moving in the up and down direction, the position at the end of the tunnel is moved up and down, and since one end of the tunnel is fixed and the other end can move up and down, the tunnel slope is adjusted; or by adjusting the position of the middle partition by moving in the horizontal direction, the position at the end of the tunnel is moved horizontally, and since one end of the tunnel is fixed and the other end can move horizontally, the tunnel curvature radius is adjusted, and the multi-degree-of-freedom curvature radius in the same plane direction is adjustable.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to a tunnel simulation device with a variable curvature radius when the tunnel passes under a transmission tower. Background Art

[0002] Model experiment is a method of proportionally converting the actual working conditions on site through the methods of geometry, physics and material similarity ratio. For the model experiment method of tunnel, there are studies on the influence of different burial depths, sizes, segment types, etc. on soil settlement, surface subsidence, tunnel floating and surrounding buildings caused by tunnel excavation, unloading and grouting; however, for curved tunnels, tunnels with different curvature radii (the curvature radius is the degree of bending change at a point on the curve, that is, the rotation rate of the tangent direction angle of a point on the curve to the arc length, which is defined by differentials and indicates the degree to which the curve deviates from a straight line. For a curve, it is equal to the radius of the arc closest to the curve at that point) will also cause soil settlement, surface subsidence and other problems. Therefore, there is an urgent need for a model test device that can change the curvature radius of the tunnel, which can simulate tunnels with different curvature radii to meet the actual needs of the project. Summary of the invention

[0003] The purpose of the present application is to provide a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower, which is used to simulate tunnels with different curvature radii to meet the actual needs of the project.

[0004] In view of this, the present application provides a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower, comprising: a model soil box, a deformable pipeline and a transmission tower model;

[0005] The model soil box is used to load soil samples, the pipeline is buried in the model soil box to simulate the tunnel lining model, and the transmission tower model is arranged above the soil samples;

[0006] One side wall of the model soil box is: a curvature adjustment system consisting of an upper partition, a middle partition, a lower partition and a slot, the middle partition is used to move up and down or horizontally, and the upper partition and the lower partition are used to retain soil when the middle partition moves to prevent soil samples from leaking out;

[0007] Among them, one end of the pipe is connected to the front box wall of the model soil box to achieve the fixing effect, and the other end is connected to the middle partition; by moving the position of the middle partition in the upward and downward directions to adjust the position, the position at the end of the tunnel can be moved up and down. Since one end of the tunnel is fixed and the position of the other end can be changed up and down, the slope of the tunnel is changed, thereby adjusting the slope of the tunnel; or by moving the position of the middle partition in the horizontal direction to adjust the position of the middle partition, the position at the end of the tunnel can be moved horizontally. Since one end of the tunnel is fixed and the position of the other end can be changed horizontally, the curvature radius of the tunnel is changed, thereby adjusting the curvature radius of the tunnel, and realizing the adjustable curvature radius of multiple degrees of freedom in the same plane direction.

[0008] Optionally, it also includes: a water bag, a drainage system and an analysis module;

[0009] The water bag is used to simulate the loss of the stratum and to discharge the model soil box through the drainage system;

[0010] The analysis module is used to collect data during the model test and analyze and display it.

[0011] Optionally, the water bag specifically includes: a rubber water bag and an internal water bag;

[0012] The rubber water bag covers the outside of the tunnel lining model; the internal water bag is placed inside the tunnel lining model to unload the force generated by internal excavation.

[0013] Optionally, the drainage system comprises: a drainage outlet, a first drainage pipe, a drainage pump and a second drainage pipe;

[0014] The drain port is used to collect water discharged from the rubber water bag and the internal water bag, and discharge the water to the drain pump through the first drain pipe and the second drain pipe respectively;

[0015] The drainage pump is used for pumping or delivering water.

[0016] Optionally, the analysis module specifically includes: an earth pressure box, a conductor, a data acquisition device, and a power supply;

[0017] The soil pressure box is buried in the soil sample of the model soil box and is used to measure the soil pressure;

[0018] The data acquisition instrument is connected to the earth pressure box via a wire, and is used to collect data generated by the earth pressure box during the test and display it in real time;

[0019] The power supply is used to supply power to the earth pressure box and the data acquisition instrument.

[0020] Optionally, the material of the two side walls of the model soil box is organic transparent glass.

[0021] Optionally, the transmission tower model is a truss structure, which is used to simulate the transmission tower on the surface of the original working condition.

[0022] Compared with the prior art, the advantages of the embodiments of the present application are:

[0023] 1) One end of the pipe is connected to the front box wall of the model soil box to achieve a fixing effect, and the other end is connected to the middle partition; by adjusting the position of the middle partition in the upward and downward directions, the position at the end of the tunnel can be moved up and down. Since one end of the tunnel is fixed and the position of the other end can be changed up and down, the tunnel slope is changed, thereby adjusting the tunnel slope; or by adjusting the position of the middle partition in the horizontal direction, the position at the end of the tunnel can be moved horizontally. Since one end of the tunnel is fixed and the position of the other end can be changed horizontally, the curvature radius of the tunnel is changed, thereby adjusting the curvature radius of the tunnel, and realizing the adjustable curvature radius of multiple degrees of freedom in the same plane direction;

[0024] 2) The two side walls of the model soil box are made of transparent organic glass, which makes it easier to observe the actual conditions inside the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A side view of a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower provided in an embodiment of the present application;

[0027] Figure 2 This is a plan view of a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower provided in an embodiment of the present application.

[0028] Numbers: 1. Model soil box; 2. Pipeline; 3. Front box wall; 4. Upper partition; 5. Lower partition; 6. Middle partition; 7. Slot; 8. Rubber water bag; 9. Drain port; 10. First drain pipe; 11. Drain pump; 12. Internal water bag; 13. Second drain pipe; 14. Earth pressure box; 15. Wire; 16. Data acquisition instrument; 17. Power supply; 18. Transmission tower model. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] See also Figure 1 and 2 , the present application designs a tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower, comprising: a model soil box 1, a deformable pipe 2, a transmission tower model 18, a water bag, a drainage system and an analysis module;

[0033] The model soil box 1 is used to load soil samples, the pipeline 2 is buried in the model soil box to simulate the tunnel lining model, and the transmission tower model 18 is set above the soil samples;

[0034] It should be noted that the material of the two side walls of the model soil box is organic transparent glass.

[0035] One side wall of the model soil box is a curvature adjustment system consisting of an upper partition 4, a middle partition 6, a lower partition 5 and a slot 7. The middle partition is used to move up and down or horizontally. The upper partition 4 and the lower partition 5 are used to retain soil when the middle partition 6 moves to prevent the soil sample from leaking out.

[0036] One end of the pipe 2 is connected to the front box wall 3 of the model soil box 1 to achieve a fixing effect, and the other end is connected to the middle partition 6;

[0037] It should be noted that, in the present embodiment, one end of the pipe 2 is first connected to the pipe clamp by bolts, and then the pipe clamp is connected to the front box wall 3 of the model soil box by bolts to achieve a fixing effect, and the other end is also first connected to the pipe clamp by bolts, and then the pipe clamp is connected to the middle partition 6 of the curvature adjustment system by bolts.

[0038] By moving the position of the middle partition 6 in the upward and downward directions, the position at the end of the tunnel can be moved up and down. Since one end of the tunnel is fixed and the position of the other end can be moved up and down, the slope of the tunnel is changed, thereby adjusting the slope of the tunnel; or by moving the position of the middle partition 6 in the horizontal direction, the position at the end of the tunnel can be moved horizontally. Since one end of the tunnel is fixed and the position of the other end can be moved horizontally, the curvature radius of the tunnel is changed, thereby adjusting the curvature radius of the tunnel, and realizing the adjustable curvature radius with multiple degrees of freedom in the same plane direction.

[0039] Water bladders, used to simulate ground loss and drain out of the model soil box through a drainage system;

[0040] In this embodiment, the water bag specifically includes: a rubber water bag 8 and an internal water bag 12;

[0041] The rubber water bag 8 covers the outside of the tunnel lining model 2; the internal water bag 12 is placed inside the tunnel lining model 2 to unload the force generated by the internal excavation.

[0042] In this embodiment, the drainage system specifically includes: a drainage port 9, a first drainage pipe 10, a drainage pump 11 and a second drainage pipe 13;

[0043] The drain port 9 is used to collect water discharged from the rubber water bag 8 and the internal water bag 12, and discharge the water to the drain pump 11 through the first drain pipe 10 and the second drain pipe 13 respectively; the drain pump 11 is used to pump or deliver water.

[0044] The analysis module is used to collect, analyze and display data during the model test.

[0045] In this embodiment, the analysis module specifically includes: an earth pressure box 14, a wire 15, a data acquisition device 16 and a power supply 17;

[0046] An earth pressure box 14, buried in the soil sample of the model soil box 1, is used to measure the earth pressure;

[0047] The data acquisition device 16 is connected to the earth pressure box 14 through the wire 15, and is used to collect the data generated by the earth pressure box during the test and display it in real time;

[0048] The power supply 17 is used to supply power to the earth pressure box 14 and the data acquisition device 16 .

[0049] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tunnel simulation device with a variable curvature radius for a tunnel passing under a transmission tower, characterized in that: include: Model soil boxes, deformable pipelines and transmission tower models; The model soil box is used to load soil samples, the pipeline is buried in the model soil box to simulate the tunnel lining model, and the transmission tower model is arranged above the soil samples; One side wall of the model soil box is: a curvature adjustment system composed of an upper partition, a middle partition, a lower partition and a slot, the middle partition is used to move up and down or horizontally, the upper partition and the lower partition are used to retain soil when the middle partition moves, one end of the soil sample pipe is connected to the front box wall of the model soil box to achieve a fixing effect, and the other end is connected to the middle partition; by adjusting the position of the middle partition in the upward and downward directions, the position at the end of the tunnel is moved up and down, and since one end of the tunnel is fixed and the position of the other end can be changed up and down, the tunnel slope is changed, thereby adjusting the tunnel slope; By adjusting the position of the middle partition in the horizontal direction, the position at the end of the tunnel can be moved horizontally. Since one end of the tunnel is fixed and the position of the other end can be changed horizontally, the curvature radius of the tunnel is changed, thereby adjusting the curvature radius of the tunnel and achieving multi-degree-of-freedom curvature radius adjustment in the same plane direction.

2. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 1 is characterized in that: Also includes: water bladder, drainage system and analysis module; The water bag is used to simulate the loss of the stratum and to discharge the model soil box through the drainage system; The analysis module is used to collect data during the model test and analyze and display it.

3. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 2 is characterized in that: The water bag specifically includes: a rubber water bag and an internal water bag; The rubber water bag covers the outside of the tunnel lining model; the internal water bag is placed inside the tunnel lining model to unload the force generated by internal excavation.

4. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 3 is characterized in that: The drainage system comprises: a drainage outlet, a first drainage pipe, a drainage pump and a second drainage pipe; The drain port is used to collect water discharged from the rubber water bag and the internal water bag, and discharge the water to the drain pump through the first drain pipe and the second drain pipe respectively; The drainage pump is used for pumping or delivering water.

5. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 2 is characterized in that: The analysis module specifically includes: an earth pressure box, a conductor, a data acquisition device, and a power supply; The soil pressure box is buried in the soil sample of the model soil box and is used to measure the soil pressure; The data acquisition instrument is connected to the earth pressure box via a wire, and is used to collect data generated by the earth pressure box during the test and display it in real time; The power supply is used to supply power to the earth pressure box and the data acquisition instrument.

6. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 1 is characterized in that: The material of the two side walls of the model soil box is organic transparent glass.

7. The tunnel simulation device with variable curvature radius for tunnels passing under transmission towers according to claim 1 is characterized in that: The transmission tower model is a truss structure, which is used to simulate the transmission tower on the surface of the original working condition.

Images