Device and method for testing influence of ditch cover plate on temperature and humidity in tunnel hole

Abstract

The invention belongs to the technical field of test equipment, and discloses a device and method for testing the influence of a ditch cover plate on the temperature and humidity in a tunnel hole, and the device comprises a tunnel model, a temperature and humidity monitoring module and an underground hot water seepage simulation module, and also comprises a plurality of groups of ditch cover plate units which are all clamped in the tunnel model; the separation module is movably clamped in the middle end area of the inner cavity of the ditch cover plate unit; the sinking assembly is movably connected to one side of the separation module, and the top of the sinking assembly is fixedly connected with the shielding assembly. Through cooperation of the sinking assembly, the separation module and other structures, the cavity is divided into two independent cavities, so that the influence of temperature and humidity is observed and recorded; the positioning frame moves downwards to place the separation module and the sinking assembly in the middle area of the cavity, the cavity is divided into two independent cavity bodies, and the change condition of the temperature and humidity in the tunnel model is detected through the change of the number.

Description

Technical Field

[0001] The invention belongs to the technical field of test equipment, and in particular is a test device and method for the influence of a ditch cover on the temperature and humidity in a tunnel. Background Art

[0002] The ditch cover affects the temperature and humidity in the tunnel through its insulation, material thermal conductivity, ventilation performance, and waterproof performance. In order to maintain a good working environment in the tunnel, it is necessary to select appropriate ditch cover materials and design solutions.

[0003] The sizes of the holes for gas circulation in the existing gutter covers are generally the same. However, in view of the complex application environment inside the tunnel, it is impossible to simulate it by installing different gutter covers in practice. It is necessary to modify the design of the gutter covers according to the complex environment inside the tunnel in order to select the most suitable gutter cover. Therefore, a test device and method for the influence of gutter covers on the temperature and humidity in the tunnel are proposed. The gutter covers under different conditions are compared by model simulation to select the optimal solution, which greatly saves the time required for actual installation and comparison. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a test device and method for the influence of ditch covers on the temperature and humidity in a tunnel.

[0005] To achieve the above object, the present invention provides the following technical solution: a test device for the influence of ditch cover on temperature and humidity in a tunnel, comprising a tunnel model, a temperature and humidity monitoring module and an underground hot water seepage simulation module, and also comprising:

[0006] A ditch cover unit, wherein the ditch cover units are provided in multiple groups and are all stuck inside the tunnel model;

[0007] A partition module, the partition module is movably connected to the middle end area of ​​the inner cavity of the gutter cover unit;

[0008] A sinking component, which is movably connected to one side of the partition module and has a top fixedly connected to the shielding component;

[0009] The partition module comprises a spacer block movably connected to the inner cavity of the ditch cover unit, a shift plate movably connected to the interior of the spacer block, an end of the shift plate away from the spacer block is abutted against a push block, the push block is movably connected to the interior of the spacer block, and the push block is magnetically connected to the contact end of the spacer block, and a side of the lower end of the spacer block close to the sinking assembly is movably clamped with a push rod;

[0010] The sinking assembly includes a movable block and a tensioning assembly, wherein the movable block includes a U-shaped shell movably clamped in the inner cavity of the ditch cover unit, and a positioning block is fixedly connected to the side wall of the U-shaped shell close to the spacer, and the bottom end of the positioning block is in contact with the abutment rod;

[0011] The tensioning assembly includes an elastic block, which is arched, and the two sides of the bottom end of the elastic block are respectively fixed to the tops of two adjacent U-shaped shells, a trapezoidal plate is movably clamped inside the adjacent side wall of the lower end of the elastic block, and a rubber membrane is arranged inside the adjacent side wall of the upper end of the elastic block.

[0012] Preferably, the gutter cover unit comprises a cover, and two cavities of different sizes are provided inside the cover, and a protrusion is arranged in the inner cavity of a single cavity.

[0013] Preferably, a Z-shaped block is installed on the top of the spacer, one end of the Z-shaped block is clamped with the shielding assembly, the bottom end of the spacer abuts against the protrusion of the inner cavity of a single cover plate, the shift plate is elastically connected to the spacer through a first spring, and both ends of the bottom surface of the push rod are fixed with a second spring, and the push rod is elastically connected to the spacer through the second spring.

[0014] Preferably, a third spring is installed at the bottom of the positioning block, and the positioning block is elastically connected to the spacer through the third spring;

[0015] After the positioning block is moved downward by the external force, it will gradually press the push rod, causing the push rod to move downward and press the shift plate to move inside the spacer block.

[0016] Preferably, a side of the trapezoidal plate away from the elastic block is in contact with the cover plate, and an air cavity is provided inside the elastic block.

[0017] Preferably, the shielding assembly comprises a positioning frame fixed on the top of the positioning block, the positioning frame is arched, and two sides of the bottom end are respectively fixed to the tops of two adjacent positioning blocks;

[0018] The positioning frames are provided in multiple groups, and the tops of the positioning frames in multiple groups are fixedly connected to the tunnel model through the power module.

[0019] Preferably, a folding plate is provided at the top of the inner cavity of the positioning frame, the top of the folding plate is fixedly connected to the positioning frame, and the bottom of the folding plate is movably connected to the inner wall of the positioning frame;

[0020] Two vertical shafts are installed on both sides of the inner cavity of the positioning frame. Both ends of the positioning frame located in the inner cavity of the positioning frame are sleeved on the vertical shafts. A tension spring is movably sleeved on the vertical shaft. The top of the tension spring is fixedly connected to the bottom surface of the folding plate, and the bottom of the tension spring is fixedly connected to a cross bar movably sleeved on the outer wall of the vertical shaft.

[0021] Preferably, one end of the cross bar extends to the top surface of the cover plate, one end of the cross bar located in the inner cavity of the positioning frame is abutted against and connected to a vertical bar, one end of the vertical bar away from the cross bar is installed with a flexible spring, and the vertical bar is elastically connected to the positioning frame through the flexible spring;

[0022] The top end of the vertical rod is located on the bottom surface of the folding plate and blocks the folding plate. The contact end of the horizontal rod and the vertical rod is equipped with an inclined block.

[0023] Preferably, the bottom of the power module is fixedly connected to the top of the positioning frame, and the top of the power module is fixedly connected to the inner cavity of the tunnel model;

[0024] The temperature and humidity monitoring module is suspended inside the tunnel model to monitor the evolution of temperature and humidity in the tunnel model caused by hot water evaporation. The temperature and humidity monitoring module includes a first bracket, the top of the first bracket is fixedly connected to the tunnel model, and the bottom of the first bracket is fixedly connected to a temperature and humidity monitor;

[0025] The underground hot water seepage simulation module is installed in the tunnel model and placed directly below the ditch cover unit to simulate groundwater seepage. The ditch cover unit includes a hot water seepage drive component, a water pipe and a hot water tank. The hot water seepage drive component includes a guide rail, a slider, a traction rope and a drive module. The slider is nested on the guide rail, and both ends of the slider are connected to the traction rope. When the drive module pulls the traction rope, the slider can move longitudinally along the guide rail.

[0026] A test method for the influence of a ditch cover on the temperature and humidity in a tunnel, the test method is as follows:

[0027] S1. First, multiple ditch cover units are spliced ​​together and placed on top of the underground hot water seepage simulation module. Then, the zone temperature control system is turned on and adjusted to simulate the abnormally high geothermal area caused by high rock temperature and underground hot water seepage, and restore the temperature field distribution of the actual tunnel;

[0028] S2. In the initial state, the partition module, sinking component and shielding component are all located above the ditch cover unit. At this time, the cavity will not be divided, and the cavity forms an integral cavity. The underground hot water seepage simulation module is turned on and recorded through the temperature and humidity monitor. When the cover forms an integral cavity, the change values ​​of the temperature and humidity inside the tunnel model;

[0029] S3, the power module drives the separation module to separate the cavity, that is, the single integral cavity is divided into two separate cavities, and then the temperature and humidity monitor is used to detect and record the changes in the temperature and humidity inside the tunnel model when the number of cavities for flow on the cover plate increases, and the increase in the number of cavities for gas flow in S1 and S2 is compared to observe the changes in temperature and humidity in the tunnel model;

[0030] S4, the positioning frame drives the U-shaped shell to move downward continuously through the power module. At this time, the depth of one of the two cavities of the cavity will increase, and the depth of the other cavity will not change. At this time, the temperature and humidity monitor can be used to detect the comparative changes in temperature and humidity of cavities with different depths when used for gas flow when the number of cavities is the same;

[0031] S5. The downward movement of the U-shaped shell will cause the push block to move through the push rod and the shift plate, and the push block will reduce the space inside one of the two cavities, and the changes in temperature and humidity will be compared through the temperature and humidity monitor;

[0032] S6. Compare the normal manhole cover unit with the manhole cover unit divided into two separate cavities, i.e., the cavity for gas flow, the manhole cover units at different depths for gas flow, and the manhole cover units with different internal spaces of the cavity, and then find out under which conditions of the manhole cover unit the temperature and humidity inside the tunnel model are most affected.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention realizes the separation of the cavity into two separate cavities by setting up the cooperation of the structures such as the sinking component and the separation module, so as to observe and record the influence of temperature and humidity. The positioning frame is moved downward to place the separation module and the sinking component in the middle area of ​​the cavity, so that the cavity is separated into two separate cavities. The change of the quantity is used to detect the change of temperature and humidity in the tunnel model.

[0035] The present invention arranges the coordination of structures such as a U-shaped shell and a cover plate, and then observes and records the influence of temperature and humidity through the change of depth. The positioning frame continues to move downward to drive the positioning block and the U-shaped shell to move downward inside the cavity, so that the depth of the cover plate continues to increase. The temperature and humidity monitor and the underground hot water seepage simulation module are used to monitor the depth change of the cavity for gas circulation under the premise of the number being unchanged, so as to detect the change of temperature and humidity in the tunnel model.

[0036] The present invention arranges the coordination of the positioning block and the push block, and then observes and records the influence of temperature and humidity through the changes in space. After the positioning block moves downward against the stopper to press the moving plate so that the push block moves outward, the space of a single cavity is reduced. The space size change of the cavity used for gas circulation is detected by the temperature and humidity monitor and the underground hot water seepage simulation module to detect the changes in temperature and humidity in the tunnel model.

[0037] The present invention improves the tightness between two adjacent cover plates during the test simulation process by arranging the coordination of structures such as elastic blocks and rubber membranes, thereby assisting in ensuring the accuracy of the test and preventing the cover plate from shaking during the test. The two adjacent U-shaped shells move downward, driving the elastic blocks on their top surfaces to move downward synchronously, and the trapezoidal plate gradually contacts the cover plate, causing it to gradually move toward the inside of the elastic block and squeeze the gas inside the air cavity corresponding to the trapezoidal plate. The gas gradually flows upward and fills the air cavity corresponding to the rubber membrane, causing the rubber membrane to be filled with gas and expand outward. As the elastic block moves downward, the filled rubber membrane will abut against the side wall of the cover plate, thereby improving the tight fitting effect of the elastic block on the two adjacent cover plates and improving the tightness of the multiple cover plates after splicing;

[0038] The present invention separates and blocks the temperature and humidity in different areas by setting up the coordination of structures such as the positioning frame and the folding plate, thereby preventing the adjacent gases from mixing after the upstream flow and thus causing a large error. The positioning frame simultaneously drives the cross bar to move, and one end of the cross bar is blocked by the cover plate to drive the inclined block to resist the vertical bar, so that the vertical bar is resisted by the cross bar and moves away from the cross bar, thereby releasing the obstruction on the bottom of the folding plate. The folding plate is pulled by the tension spring mounted on the outer wall of the vertical shaft, which drives the folding plate to unfold, and blocks the temperature and humidity areas in two adjacent positions, thereby avoiding the occurrence of large errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of the present invention;

[0040] Figure 2 It is a schematic diagram of the structural matching relationship between the first bracket and the temperature and humidity monitor of the present invention;

[0041] Figure 3 It is a schematic diagram of the structural coordination relationship between the partition module and the shielding assembly of the present invention;

[0042] Figure 4 It is a schematic diagram of the structural matching relationship between the movable block and the tensioning assembly of the present invention;

[0043] Figure 5 It is a schematic diagram of the structural matching relationship between the movable block and the cavity of the present invention;

[0044] Figure 6 It is a schematic diagram of the subdivision structure of the separation module of the present invention;

[0045] Figure 7 It is a schematic diagram of the subdivision structure of the activity block of the present invention;

[0046] Figure 8 It is a schematic diagram of the structural matching relationship between the trapezoidal plate and the elastic block of the present invention;

[0047] Fig. 9It is a schematic diagram of the subdivided structure of the shielding component of the present invention;

[0048] Fig.10 for Fig. 9 A schematic diagram of the partially enlarged structure at center A;

[0049] Fig.11 for Fig. 9 A schematic diagram of the partially enlarged structure at B in the middle;

[0050] Fig.12 It is a schematic diagram of the structural coordination relationship between the push block and the shift plate of the present invention;

[0051] Fig.13 It is a schematic diagram of the structural matching relationship between the U-shaped shell and the push block of the present invention.

[0052] In the figure: 1. Tunnel model; 2. Temperature and humidity monitoring module; 21. First bracket; 22. Temperature and humidity monitor; 3. Ditch cover unit; 31. Cover; 32. Cavity; 4. Power module; 41. Pneumatic cylinder; 42. Second bracket; 5. Underground hot water seepage simulation module; 6. Separation module; 61. Spacer; 62. Z-shaped block; 63. Push block; 64. Shifting plate; 65. First spring; 66. Push rod; 67. Second spring; 7. Sinking assembly; 71. Movable block; 711. U-shaped shell; 712. Positioning block; 713. Third spring; 72. Tension assembly; 721. Elastic block; 722. Trapezoidal plate; 723. Rubber membrane; 8. Shielding assembly; 81. Positioning frame; 82. Folding plate; 83. Vertical rod; 84. Cross rod. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] like Figures 1 to 13 As shown, the present invention provides a test device for the influence of a ditch cover on the temperature and humidity in a tunnel, comprising a tunnel model 1, a temperature and humidity monitoring module 2 and an underground hot water seepage simulation module 5, and also comprising:

[0055] The ditch cover plate unit 3 is provided with a plurality of groups, and all of the ditch cover plate units 3 are stuck inside the tunnel model 1;

[0056] The partition module 6 is movably connected to the middle end area of ​​the inner cavity of the gutter cover unit 3;

[0057] A sinking component 7, which is movably connected to one side of the partition module 6, and the top is fixedly connected to the shielding component 8;

[0058] The partition module 6 includes a spacer 61 movably connected to the inner cavity of the ditch cover unit 3, a moving plate 64 is movably connected inside the spacer 61, and an end of the moving plate 64 away from the spacer 61 is abutted and connected with a push block 63, the push block 63 is movably connected inside the spacer 61, and the push block 63 is magnetically connected to the contact end of the spacer 61, and a side of the lower end of the spacer 61 close to the sinking component 7 is movably clamped with a push rod 66;

[0059] The sinking assembly 7 includes a movable block 71 and a tensioning assembly 72. The movable block 71 includes a U-shaped shell 711 that is movably clamped in the inner cavity of the ditch cover unit 3. A positioning block 712 is fixedly connected to the side wall of the U-shaped shell 711 close to the spacer 61. The bottom end of the positioning block 712 is in contact with the stop rod 66.

[0060] The tensioning assembly 72 includes an elastic block 721, which is arched, and the two sides of the bottom end of the elastic block 721 are respectively fixed to the tops of two adjacent U-shaped shells 711, a trapezoidal plate 722 is movably clamped inside the adjacent side wall of the lower end of the elastic block 721, and a rubber membrane 723 is arranged inside the adjacent side wall of the upper end of the elastic block 721.

[0061] like Figure 4 and Figure 5 As shown, the gutter cover unit 3 includes a cover 31 , and two cavities 32 of different sizes are opened inside the cover 31 , and a protrusion is arranged in the inner cavity of a single cavity 32 .

[0062] The above solution is adopted: the two cavities 32 of different sizes are specifically divided into a first cavity 32 of larger size and a second cavity 32 of smaller size; and combined with Figure 5 It can be seen that a protrusion for limiting the separation module 6 is fixed to the lower end of the inner wall of the second cavity 32 with smaller size, and the separation module 6 moves on the inner wall of the second cavity 32 with smaller size, and the sinking component 7 moves in the first cavity 32 with larger size.

[0063] like Figure 6 , Figure 7 , Fig.12 and Fig.13 As shown, a Z-shaped block 62 is installed on the top of the spacer block 61, one end of the Z-shaped block 62 is clamped with the shielding assembly 8, the bottom end of the spacer block 61 is abutted with the protrusion of the single cavity 32, the shift plate 64 is elastically connected to the spacer block 61 through the first spring 65, and the two ends of the bottom surface of the support rod 66 are fixed with the second spring 67, and the support rod 66 is elastically connected to the spacer block 61 through the second spring 67.

[0064] Adopt the above solution: Combine Fig.12It can be seen that the groove at the top of the Z-shaped block 62 is stuck in the bottom of the shielding component 8, and at the same time, part of the bottom of the shielding component 8 is also stuck in the top of the spacer block 61. The push rod 66 is subjected to downward pressure to press the shift plate 64 and make the shift plate 64 gradually contact the push block 63, so that there is gradually a gap between the push block 63 and the magnetic surface of the spacer block 61, and it expands. At this time, the push block 63 will move away from the spacer block 61.

[0065] like Figure 6 , Figure 7 , Fig.12 and Fig.13 As shown, a third spring 713 is installed at the bottom of the positioning block 712, and the positioning block 712 is elastically connected to the spacer 61 through the third spring 713;

[0066] After the positioning block 712 is moved downward by the external force, it will gradually press the push rod 66 , causing the push rod 66 to move downward and press the moving plate 64 to move inside the spacer block 61 .

[0067] like Figure 8 As shown, the side of the trapezoidal plate 722 away from the elastic block 721 abuts against the cover plate 31 , and an air cavity is defined inside the elastic block 721 .

[0068] The above scheme is adopted: when two adjacent U-shaped shells 711 move downward, the elastic block 721 on the top surface thereof will be driven to move downward synchronously. At this time, the trapezoidal plate 722 will gradually contact the cover plate 31, and because of the obstruction of the cover plate 31, the trapezoidal plate 722 will gradually move toward the inside of the elastic block 721, and squeeze the gas inside the air cavity corresponding to the trapezoidal plate 722, so that the gas gradually flows upward and fills the air cavity corresponding to the rubber membrane 723, thereby causing the rubber membrane 723 to be filled with gas and expand outward. As the elastic block 721 moves downward, the filled rubber membrane 723 will abut against the side wall of the cover plate 31, thereby improving the close fitting effect of the elastic block 721 on the two adjacent cover plates 31, and improving the tightness of the multiple cover plates 31 after splicing.

[0069] like Figures 9 to 11 As shown, the shielding assembly 8 includes a positioning frame 81 fixed to the top of the positioning block 712, the positioning frame 81 is arched, and the two sides of the bottom end are respectively fixed to the tops of two adjacent positioning blocks 712;

[0070] There are multiple groups of positioning frames 81 , and the tops of the multiple groups of positioning frames 81 are fixedly connected to the tunnel model 1 through the power module 4 .

[0071] The above scheme is adopted: the contact end of the positioning frame 81 and the Z-block 62 is a convex semicircular block, and is located on the top of the spacer block 61, and is made of rubber. When the positioning frame 81 moves downward, it will drive the positioning block 712 and the spacer block 61 to move downward synchronously. When the spacer block 61 collides with the convex block on the inner wall of the cover plate 31, the spacer block 61 will not move at this time, but the positioning frame 81 is continuously moved downward through the power module 4, which will cause the convex rubber semicircular block of the positioning frame 81 to be squeezed and deformed by the Z-block 62, and then gradually detach from the clamping of the Z-block 62, so that the positioning frame 81 can continue to drive the positioning block 712 downward.

[0072] like Fig.10 and Fig.11 As shown, a folding plate 82 is provided at the top of the inner cavity of the positioning frame 81, the top of the folding plate 82 is fixedly connected to the positioning frame 81, and the bottom of the folding plate 82 is movably connected to the inner wall of the positioning frame 81;

[0073] Two vertical shafts are installed on both sides of the inner cavity of the positioning frame 81. Both ends of the positioning frame 81 located in the inner cavity of the positioning frame 81 are sleeved on the vertical shafts. A tension spring is movably sleeved on the vertical shaft. The top of the tension spring is fixedly connected to the bottom surface of the folding plate 82, and the bottom of the tension spring is fixedly connected to a cross bar 84 movably sleeved on the outer wall of the vertical shaft.

[0074] like Fig.10 and Fig.11 As shown, one end of the cross bar 84 extends to the top surface of the cover plate 31, and one end of the cross bar 84 located in the inner cavity of the positioning frame 81 is abutted against and connected to the vertical bar 83, and one end of the vertical bar 83 away from the cross bar 84 is installed with a flexible spring, and the vertical bar 83 is elastically connected to the positioning frame 81 through the flexible spring;

[0075] The top end of the vertical rod 83 is located at the bottom surface of the folding plate 82 and blocks the folding plate 82 . The contact end of the cross rod 84 and the vertical rod 83 is installed with an inclined block.

[0076] The above scheme is adopted: as the positioning frame 81 moves downward, the cross bar 84 will be driven to move synchronously. When the cross bar 84 moves downward with the positioning frame 81 and one end of the cross bar 84 is blocked by the cover plate 31, the cross bar 84 moves upward to drive the inclined block to resist the vertical bar 83, so that the vertical bar 83 is gradually moved away from the cross bar 84 by the oblique block of the cross bar 84. At this time, the top of the vertical bar 83 will release the obstruction to the bottom of the folding plate 82, and the folding plate 82 will be pulled by the tension spring mounted on the outer wall of the vertical shaft, driving the folding plate 82 to unfold, blocking the temperature and humidity areas at different positions, thereby improving the accuracy of the test.

[0077] like Figure 2 and Figure 3 As shown, the bottom of the power module 4 is fixedly connected to the top of the positioning frame 81, and the top of the power module 4 is fixedly connected to the inner cavity of the tunnel model 1;

[0078] The temperature and humidity monitoring module 2 is suspended inside the tunnel model 1 to monitor the evolution of temperature and humidity in the tunnel model 1 caused by hot water evaporation. The temperature and humidity monitoring module 2 includes a first bracket 21, the top of the first bracket 21 is fixedly connected to the tunnel model 1, and the bottom of the first bracket 21 is fixedly connected to a temperature and humidity monitor 22. The first bracket 21 is provided with multiple groups.

[0079] The underground hot water seepage simulation module 5 is installed in the tunnel model 1 and placed directly below the ditch cover unit 3 to simulate the groundwater seepage. The ditch cover unit 3 includes a hot water seepage drive component, a water pipe and a hot water tank. The hot water seepage drive component includes a guide rail, a slider, a traction rope and a drive module. The slider is nested on the guide rail, and the two ends of the slider are connected to the traction rope. When the drive module pulls the traction rope, the slider can move longitudinally along the guide rail, thereby realizing the simulation of hot water seepage from the horizontal drainage pipe at different positions.

[0080] A test method for the effect of ditch cover on temperature and humidity in a tunnel, the test method is as follows:

[0081] S1. After splicing multiple ditch cover units 3, place them above the underground hot water seepage simulation module 5, turn on and adjust the zone temperature control system to simulate the abnormally high geothermal area caused by high rock temperature and underground hot water seepage, and restore the temperature field distribution of the actual tunnel;

[0082] S2. In the initial state, the partition module 6, the sinking component 7 and the shielding component 8 are all located above the ditch cover unit 3. At this time, the inner cavity of the cavity 32 will not be separated, and the cavity 32 forms a whole cavity. The underground hot water seepage simulation module 5 is turned on and recorded through the temperature and humidity monitor 22. When the cover 31 forms an integral cavity, the change value of the temperature and humidity inside the tunnel model 1;

[0083] S3, the power module 4 drives the separation module 6 to separate the cavity 32, that is, the single integral cavity 32 is divided into two separate cavities, and then the temperature and humidity monitor 22 detects and records the changes in the temperature and humidity inside the tunnel model 1 when the number of cavities 32 for flow on the cover plate 31 increases, and compares the increase in the number of cavities for gas flow in S1 and S2, so as to observe the changes in temperature and humidity in the tunnel model 1;

[0084] S4, the positioning frame 81 drives the U-shaped shell 711 to continue to move downward through the power module 4. At this time, the depth of one of the two cavities of the cavity 32 will increase, and the depth of the other cavity will not change. At this time, the temperature and humidity monitor 22 can detect the comparative changes in temperature and humidity of cavities with different depths when used for gas flow when the number of cavities is the same;

[0085] S5. The downward movement of the U-shaped housing 711 will move the push block 63 through the push rod 66 and the shift plate 64. The push block 63 will reduce the space inside one of the two cavities, and the temperature and humidity changes will be compared through the temperature and humidity monitor 22.

[0086] S6. Increase the normal gutter cover unit 3 and the gutter cover unit 3 that is divided into two separate cavities, i.e., the cavity for gas flow, and compare the gutter cover units 3 at different depths for gas flow and the gutter cover units 3 with different internal spaces of the cavity, and then find out under which circumstance of the gutter cover unit 3 the temperature and humidity inside the tunnel model 1 are most affected.

[0087] The working principle and use process of the present invention:

[0088] The first state - in quantity:

[0089] The power module 4 drives the positioning frame 81 to move downward, and the partition module 6 and the sinking component 7 are placed in the middle area of ​​the cavity 32 through the positioning frame 81. At this time, the entire cavity 32 will be divided into two separate cavities, that is, the first cavity 32 is larger in size, and the second cavity 32 is smaller in size. The temperature and humidity monitor 22 and the underground hot water seepage simulation module 5 are used to change the number of cavities 32 for gas circulation to detect the changes in temperature and humidity in the tunnel model 1;

[0090] The second state - in depth:

[0091] The positioning frame 81 continues to move downward, driving the positioning block 712 and the U-shaped shell 711 to move downward inside the cavity 32. The gradual downward movement of the U-shaped shell 711 will cause the depth of the cover plate 31 to increase continuously. The temperature and humidity monitor 22 and the underground hot water seepage simulation module 5 are used to monitor the depth change of the cavity 32 for gas circulation under the premise of the number being unchanged, so as to detect the change of temperature and humidity in the tunnel model 1.

[0092] The second state - in space:

[0093] The positioning block 712 moves downward to contact the rod 66 to press the shift plate 64, so that the push block 63 releases the magnetic attraction effect with the spacer block 61. After the push block 63 moves outward, the space of the single cavity 32 will be reduced. The change in the space size of the cavity 32 used for gas circulation is detected by the temperature and humidity monitor 22 and the underground hot water seepage simulation module 5 to detect the change in temperature and humidity in the tunnel model 1.

[0094] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0095] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test device for the influence of a ditch cover on the temperature and humidity in a tunnel, comprising a tunnel model (1), a temperature and humidity monitoring module (2) and an underground hot water seepage simulation module (5), characterized in that: Also includes: A ditch cover plate unit (3), wherein the ditch cover plate unit (3) is provided in a plurality of groups and all of the groups are clamped inside the tunnel model (1); A partition module (6), the partition module (6) being movably snap-connected to the middle end region of the inner cavity of the gutter cover unit (3); A sinking component (7), wherein the sinking component (7) is movably connected to one side of the partition module (6), and the top is fixedly connected to the shielding component (8); The partition module (6) comprises a partition block (61) movably connected to the inner cavity of the ditch cover unit (3); a shift plate (64) is movably connected inside the partition block (61); an end of the shift plate (64) away from the partition block (61) is abutted against a push block (63); the push block (63) is movably connected inside the partition block (61), and the push block (63) is magnetically connected to the contact end of the partition block (61); and a side of the lower end of the partition block (61) close to the sinking component (7) is movably connected with a push rod (66); The sinking assembly (7) comprises a movable block (71) and a tensioning assembly (72); the movable block (71) comprises a U-shaped shell (711) movably clamped in the inner cavity of the gutter cover unit (3); a positioning block (712) is fixedly connected to the side wall of the U-shaped shell (711) close to the spacer (61); the bottom end of the positioning block (712) is in contact with the support rod (66); The tensioning assembly (72) comprises an elastic block (721), the elastic block (721) is arched, and the two sides of the bottom end of the elastic block (721) are respectively fixed to the tops of two adjacent U-shaped shells (711), a trapezoidal plate (722) is movably clamped inside the adjacent side wall of the lower end of the elastic block (721), and a rubber membrane (723) is provided inside the adjacent side wall of the upper end of the elastic block (721).

2. The test device for the effect of ditch cover on temperature and humidity in tunnel according to claim 1 is characterized by: The ditch cover plate unit (3) comprises a cover plate (31), wherein two cavities (32) of different sizes are provided inside the cover plate (31), and a protrusion is provided in the inner cavity of a single cavity (32).

3. The test device for the effect of ditch cover on temperature and humidity in tunnel according to claim 1, characterized in that: A Z-shaped block (62) is installed on the top of the spacer (61), one end of the Z-shaped block (62) is clamped with the shielding assembly (8), the bottom end of the spacer (61) is abutted with the protrusion of the single cavity (32), the shift plate (64) is elastically connected to the spacer (61) through a first spring (65), and both ends of the bottom surface of the push rod (66) are fixed with second springs (67), and the push rod (66) is elastically connected to the spacer (61) through the second spring (67).

4. The test device for the effect of ditch cover on temperature and humidity in a tunnel according to claim 1 is characterized in that: A third spring (713) is installed at the bottom of the positioning block (712), and the positioning block (712) is elastically connected to the spacer (61) via the third spring (713); After the positioning block (712) is moved downward by the external force, it will gradually press the push rod (66), causing the push rod (66) to move downward and press the moving plate (64) to move inside the spacer (61).

5. The test device for the effect of ditch cover on temperature and humidity in a tunnel according to claim 1 is characterized by: The side of the trapezoidal plate (722) away from the elastic block (721) abuts against the cover plate (31), and an air cavity is provided inside the elastic block (721).

6. The test device for the effect of ditch cover on temperature and humidity in tunnel according to claim 1, characterized in that: The shielding assembly (8) comprises a positioning frame (81) fixed on the top of the positioning block (712); the positioning frame (81) is arched, and two sides of the bottom end are respectively fixed to the tops of two adjacent positioning blocks (712); A plurality of positioning frames (81) are provided, and the tops of the plurality of positioning frames (81) are fixedly connected to the tunnel model (1) via a power module (4).

7. The test device for the effect of ditch cover on temperature and humidity in a tunnel according to claim 6, characterized in that: A folding plate (82) is provided at the top of the inner cavity of the positioning frame (81), the top of the folding plate (82) is fixedly connected to the positioning frame (81), and the bottom of the folding plate (82) is movably connected to the inner wall of the positioning frame (81); Two vertical shafts are installed on both sides of the inner cavity of the positioning frame (81), and both ends of the positioning frame (81) located in the inner cavity of the positioning frame (81) are sleeved on the vertical shafts. A tension spring is movably sleeved on the vertical shaft, and the top of the tension spring is fixedly connected to the bottom surface of the folding plate (82), and the bottom of the tension spring is fixedly connected to a cross bar (84) movably sleeved on the outer wall of the vertical shaft.

8. The test device for the effect of ditch cover on temperature and humidity in a tunnel according to claim 7, characterized in that: One end of the cross bar (84) extends to the top surface of the cover plate (31), one end of the cross bar (84) located in the inner cavity of the positioning frame (81) is abutted against and connected to a vertical bar (83), one end of the vertical bar (83) away from the cross bar (84) is installed with a flexible spring, and the vertical bar (83) is elastically connected to the positioning frame (81) through the flexible spring; The top end of the vertical rod (83) is located on the bottom surface of the folding plate (82) and blocks the folding plate (82). The contact end of the cross rod (84) and the vertical rod (83) is equipped with an inclined block.

9. The test device for the effect of ditch cover on temperature and humidity in a tunnel according to claim 6, characterized in that: The bottom of the power module (4) is fixedly connected to the top of the positioning frame (81), and the top of the power module (4) is fixedly connected to the inner cavity of the tunnel model (1); The temperature and humidity monitoring module (2) is suspended inside the tunnel model (1) and is used to monitor the evolution of temperature and humidity in the tunnel model (1) caused by hot water evaporation. The temperature and humidity monitoring module (2) comprises a first bracket (21), the top of the first bracket (21) is fixedly connected to the tunnel model (1), the bottom of the first bracket (21) is fixedly connected to a temperature and humidity monitor (22), and the first bracket (21) is provided with a plurality of groups; The underground hot water seepage simulation module (5) is installed in the tunnel model (1) and placed directly below the ditch cover unit (3) to simulate underground water seepage. The ditch cover unit (3) comprises a hot water seepage drive component, a water pipe and a hot water tank. The hot water seepage drive component comprises a guide rail, a slider, a traction rope and a drive module. The slider is nested on the guide rail, and both ends of the slider are connected to the traction rope. When the drive module pulls the traction rope, the slider can move longitudinally along the guide rail.

10. A test method for the effect of a ditch cover on the temperature and humidity in a tunnel, applied to the test device for the effect of a ditch cover on the temperature and humidity in a tunnel as claimed in claims 1 to 9, characterized in that: The test method is as follows: S1, after splicing a plurality of ditch cover units (3), placing them above the underground hot water seepage simulation module (5), opening and adjusting the zone temperature control system, simulating the abnormally high geothermal area caused by high rock temperature and underground hot water seepage, and restoring the temperature field distribution of the actual tunnel; S2, in the initial state, the partition module (6), the sinking component (7) and the shielding component (8) are all located above the ditch cover unit (3), at which time the inner cavity of the cavity (32) is not divided, and the cavity (32) forms a complete cavity. The underground hot water seepage simulation module (5) is turned on and the temperature and humidity monitor (22) records the change in temperature and humidity inside the tunnel model (1) when the cover (31) forms an integral cavity; S3, driving the partition module (6) through the power module (4) to partition the cavity (32), that is, the single integral cavity (32) is partitioned into two separate cavities, and then using the temperature and humidity monitor (22) to detect and record the changes in the temperature and humidity inside the tunnel model (1) when the number of cavities (32) for flow on the cover plate (31) increases, and comparing the increase in the number of cavities for gas flow in S1 and S2, so as to observe the changes in the temperature and humidity inside the tunnel model (1); S4, the positioning frame (81) drives the U-shaped shell (711) to move downward continuously through the power module (4), at which time the depth of one of the two cavities of the cavity (32) will increase, while the depth of the other cavity will not change. At this time, the temperature and humidity monitor (22) can be used to detect the comparative changes in temperature and humidity of cavities of different depths when used for gas flow when the number of cavities is the same; S5. The downward movement of the U-shaped housing (711) causes the push block (63) to move through the push rod (66) and the shift plate (64). The push block (63) reduces the space inside one of the two cavities, and compares the changes in temperature and humidity through the temperature and humidity monitor (22); S6. The normal ditch cover unit (3) is divided into two separate cavities, i.e., the cavity for gas flow is increased. The ditch cover units (3) at different depths for gas flow and the ditch cover units (3) with different internal spaces of the cavity are compared, and then it is compared under which ditch cover unit (3) the temperature and humidity inside the tunnel model (1) are most affected.

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