Device for simulating influence of blasting of newly-built tunnel on existing tunnel
By designing a device that simulates the impact of blasting a new tunnel on the existing tunnel, the combined movement of sliding, telescopic and electric jaws is used to solve the impact of blasting and excavation of a new tunnel on the existing tunnel, achieving more efficient and accurate tunnel model placement, reducing test uncertainty and speeding up progress.
Patent Information
- Application Number
- CN202421248259.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-03
AI Technical Summary
During the blasting and excavation of newly built tunnels, it is difficult to effectively avoid the impact on existing tunnels, which may lead to safety accidents.
Design a device that simulates the impact of blasting a new tunnel on existing tunnels, including a model box, a sliding device, a telescopic device and an electric jaw. Through the combined movement of these devices, the tunnel model is placed in a preset position, reducing the time cost of manual handling and improving accuracy.
By reducing manual handling time and improving model placement accuracy, the uncertainty of the test results is reduced, unnecessary impact on existing tunnels is avoided, and the test progress is accelerated.
Smart Images
Figure CN222774384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tunnel engineering, in particular to a device for simulating the influence of blasting a new tunnel on an existing tunnel. Background Art
[0002] With the rapid development of my country's transportation industry and the increasing number of traffic tunnels, it is inevitable that the new tunnel model will be adjacent to the existing tunnel model. The new tunnel model will inevitably disturb the surrounding rock and lining of the existing tunnel model during and after the excavation process. Therefore, a device is designed to simulate the impact of blasting a new tunnel on the existing tunnel. It can be used as a theoretical basis and method suggestion for the on-site construction of the new tunnel to avoid the impact of safety accidents on the surrounding existing tunnels during the blasting excavation of the new tunnel. Utility Model Content
[0003] The utility model aims to provide a device for simulating the influence of blasting a new tunnel on an existing tunnel.
[0004] The purpose of the utility model is mainly achieved through the following technical solutions:
[0005] The present application example provides a device for simulating the impact of blasting a new tunnel on an existing tunnel, which includes:
[0006] The model box has an opening at the top and multiple unearthed openings at the bottom, each unearthed opening is provided with a sealing plate, and the inner walls of the side and bottom of the model box are provided with gaskets for absorbing blasting stress waves;
[0007] The sliding device includes a carrying plate, a linear module and a connecting piece. The carrying plate is set on the top of the model box, the linear module is fixed on the carrying plate, and the connecting piece is connected to the bottom of the slider of the linear module. The linear module can drive the connecting piece to translate in the model box.
[0008] The telescopic device comprises a supporting shell and an electric push rod, one end of the supporting shell is detachably connected to the bottom of the connecting piece, and the other end is sleeved with the electric push rod;
[0009] An electric clamping claw is detachably connected to the other end of the electric push rod;
[0010] The electric push rod can drive the electric clamp to rise and fall in the model box.
[0011] The advantage of this solution is that the telescopic device connected to the connecting piece is driven by the slider of the linear module to move horizontally along the slide rail of the linear module in the model test box, and the electric push rod is extended or contracted in the support shell to drive the electric clamp to clamp the tunnel model and move it in the vertical direction in the model box. The models of existing tunnels and newly built tunnels are placed at preset positions through this combined movement, which reduces the time cost of manual transportation. At the same time, compared with placing the tunnel model at the preset position by manual transportation, the accuracy of placing the tunnel model at the preset position by using a sliding device, a telescopic device and an electric clamp is higher, so that the test results are more accurate. In addition, in the traditional technical solution, when re-experimentation is required, it is necessary to use manual excavation to remove the rock and soil materials from the model box. In this solution, multiple excavation ports are set at the bottom of the model box, and the sealing plates of the excavation ports are directly opened to let the soil in the model box flow out, and then the tunnel model is clamped to the preset position again and then the filling is continued, which reduces manpower and time costs and speeds up the test progress.
[0012] As a further solution of the utility model, the gasket is a rectangular honeycomb gasket.
[0013] When this embodiment is implemented, the gasket is a honeycomb pad made of rubber, foam cotton or EPS foam board, and its overall structure is a rectangular structure.
[0014] The advantage of this solution is that when the blasting stress wave reaches the free surface, the stress wave will produce a tensile stress reflection wave, which will affect the calculation results and increase the calculation time. In order to avoid the adverse effects of the model box boundary, gaskets are added around the model box and at the upper and lower boundaries. The gaskets can effectively absorb the blasting stress waves transmitted to the model box boundary and prevent the reflection and superposition of the blasting stress waves at the boundary. In addition, the structure of the gasket is a honeycomb shape, which can better absorb the blasting stress waves generated by the explosion source.
[0015] As a further solution of the utility model, a buckle is further provided at the position where the mounting plate contacts the model box.
[0016] The advantage of this solution is that the sliding device can be firmly fixed to the top of the model box through the buckle, which can effectively prevent the mounting plate from sliding and falling on the top of the model box.
[0017] As a further solution of the utility model, a shock-absorbing pad is arranged between the connecting piece and the slider of the linear module.
[0018] The advantage of this solution is that by providing a shock-absorbing pad, it is possible to avoid the situation where the tunnel model clamped by the electric clamp is loosened due to vibration during the sliding process.
[0019] As a further solution of the utility model, a first threaded rod connected to the connecting piece is provided at the center of the bottom of the slider of the linear module, and a second threaded hole matched with the threaded rod is provided at the center of the top surface of the connecting piece.
[0020] The advantage of this solution is that a detachable threaded connection is achieved through the first bolt head at the center of the slider of the linear module and the first threaded hole of the connecting piece, which is convenient for installation and disassembly, and can be replaced at any time when the connecting piece is damaged.
[0021] As a further solution of the utility model, a second threaded rod connected to the support shell is provided at the center of the bottom surface of the connecting piece, and a second threaded hole matched with the threaded rod is provided at one end of the support shell.
[0022] The advantage of this solution is that a detachable connection is achieved through the second bolt head of the connecting piece and the second bolt hole of the supporting shell, which is convenient for disassembling the telescopic device after placing the tunnel model in a preset position, avoiding damage to the telescopic device caused by blasting impact, and facilitating the maintenance or replacement of the telescopic device in subsequent use; in addition, the second bolt head is located in the center of the slider to ensure the stability of the force, ensure uniform force during sliding, and will not cause the existing tunnel model to fall off during sliding.
[0023] As a further solution of the utility model, a third threaded rod connected to the electric clamp is provided at one end of the electric push rod, and a third threaded hole matched with the threaded rod is provided at the center of the top surface of the electric clamp.
[0024] The advantage of this solution is that a detachable connection is achieved through the third bolt head of the electric push rod and the third bolt hole of the electric clamp, which is convenient for placing the tunnel model at a preset position and then engaging the electric clamp, thereby avoiding damage to the electric clamp caused by blasting impact, and facilitating maintenance or replacement of the electric clamp in subsequent use; in addition, the third bolt hole is located in the center of the electric clamp to ensure the stability of the force, ensure uniform force during the clamping process, and prevent the existing tunnel model from falling off during clamping and movement.
[0025] As a further solution of the utility model, the included angle between the central axis of the electric push rod and the central axis of the linear module guide rail is 90°.
[0026] The advantage of this solution is that the included angle between the central axis of the electric push rod and the central axis of the linear module guide rail is 90°, so that the sliding device and the telescopic device are vertically connected at 90° as a whole. The vertical connection method allows the two devices to occupy smaller space when used in combination, which is suitable for model boxes with limited space. In addition, the vertical connection method allows the two devices to better withstand the pressure and weight brought by the tunnel model in the vertical direction when used in combination.
[0027] As a further solution of the utility model, the model box is a glass fiber reinforced plastic box.
[0028] The advantage of this solution is that the FRP box has stronger rigidity, can withstand the impact caused by blasting, and is not easily damaged; in addition, the transparent FRP also makes it convenient for operators to intuitively observe the changes inside the box after the experiment begins.
[0029] As a further solution of the utility model, the clamping surface of the electric clamp is also provided with anti-slip grooves.
[0030] The advantage of this solution is that providing anti-slip grooves on the clamping surface of the electric clamp can increase the adhesion and friction between the clamping surface and the surface of the object, so that the clamping surface can better clamp the tunnel model and avoid loosening during the transportation of the tunnel model. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:
[0032] Figure 1 A cross-sectional view of a device designed to simulate the impact of blasting a new tunnel on an existing tunnel;
[0033] Figure 2 is a schematic diagram of the model box;
[0034] Figure 3 It is a schematic diagram of the combination of the sliding device, the telescopic device and the electric gripper.
[0035] The names corresponding to the reference numerals are:
[0036] 1-model box, 2-carrying plate, 3-linear module, 4-connector, 5-support shell, 6-electric push rod, 7-electric clamp, 8-excavation port, 9-gasket and 10-clip. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0038] The features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.
[0039] Please refer to Figures 1 to 3 , a device for simulating the impact of blasting a new tunnel on an existing tunnel, comprising:
[0040] A model box 1, the top of the model box 1 is open and the bottom has a plurality of unearthed openings 8, each of the unearthed openings 8 is provided with a sealing plate, and the inner walls of the side and bottom of the model box 1 are provided with gaskets 9 for absorbing blasting stress waves;
[0041] A sliding device, the sliding device comprises a carrying plate 2, a linear module 3 and a connecting member 4, the carrying plate 2 is set on the top of the model box 1, the linear module 3 is fixed on the carrying plate 2, the connecting member 4 is connected to the bottom of the slider of the linear module 3, and the linear module 3 can drive the connecting member 4 to translate in the model box 1;
[0042] The telescopic device comprises a supporting shell 5 and an electric push rod 6. One end of the supporting shell 5 is detachably connected to the bottom of the connecting member 4, and the other end is sleeved with the electric push rod 6.
[0043] An electric clamp 7, wherein the electric clamp 7 is detachably connected to the other end of the electric push rod 6;
[0044] The electric push rod 6 can drive the electric clamp 7 to move up and down in the model box 1.
[0045] When this embodiment is implemented, the linear module 3 includes a slider and a guide rail, the slider can slide back and forth along the guide rail, and the power source of the slider sliding is provided by a stepper motor; specifically, the model of the linear module can select a customized SHB-040 linear module or SHB-060 linear module; the electric push rod 6 can select a customized screw-type electric push rod or a cylinder-type electric push rod; specifically, the electric clamp (7) can select a customized servo electric clamp, and the opening and closing grasping power source of the jaws of the electric clamp (7) is provided by a servo motor.
[0046] The advantage of this solution is that the sliding block of the linear module 3 drives the telescopic device connected to the connecting member 4 to move horizontally along the slide rail of the linear module 3 in the model test box, and the extension or contraction of the electric push rod 6 in the support shell 5 drives the electric clamp 7 to clamp the tunnel model and move it in the vertical direction in the model box 1. The models of the existing tunnel and the newly built tunnel are placed at the preset position by this combined movement, which reduces the time cost of manual transportation. At the same time, compared with placing the tunnel model at the preset position by manual transportation, the accuracy of placing the tunnel model at the preset position by using the sliding device, the telescopic device and the electric clamp 7 is higher, so that the test result is more accurate. In addition, in the traditional technical solution, when the experiment needs to be repeated, the rock and soil materials need to be taken out of the model box 1 by manual excavation. In this solution, a plurality of the unearthed openings 8 are set at the bottom of the model box 1, and the sealing plates of the unearthed openings 8 are directly opened to let the soil in the model box 1 flow out, and then the tunnel model is clamped to the preset position again and the soil is continued to be filled, which reduces the manpower and time costs and speeds up the test progress.
[0047] As a further solution of the present invention, the gasket 9 is a rectangular honeycomb gasket.
[0048] When this embodiment is implemented, the gasket 9 is a honeycomb gasket made of rubber, foam cotton or EPS foam board, and the whole gasket has a rectangular structure.
[0049] The advantage of this solution is that when the blasting stress wave reaches the free surface, the stress wave will generate a tensile stress reflection wave, which affects the calculation results and increases the calculation time. In order to avoid the adverse effects of the boundary of the model box 1, the gasket 9 is added around the model box 1 and at the upper and lower boundaries. The gasket 9 can effectively absorb the blasting stress wave transmitted to the boundary of the model box 1 and prevent the reflection and superposition of the blasting stress wave at the boundary; in addition, the structure of the gasket 9 is a honeycomb shape, which can better absorb the blasting stress wave generated by the explosion source.
[0050] As a further solution of the present invention, a buckle 10 is further provided at the portion where the mounting plate 2 contacts the model box 1 .
[0051] The advantage of this solution is that the sliding device can be firmly fixed to the top of the model box 1 through the buckle 10, which can effectively prevent the mounting plate from sliding and falling on the top of the model box 1.
[0052] As a further solution of the present invention, a shock-absorbing pad is provided between the connecting member 4 and the slider of the linear module 3 .
[0053] The advantage of this solution is that the provision of the shock-absorbing pad can prevent the tunnel model clamped by the electric clamp 7 from loosening due to vibration during the sliding process.
[0054] As a further solution of the utility model, a first threaded rod connected to the connecting member 4 is provided at the center of the bottom of the slider of the linear module 3, and a first threaded hole matched with the first threaded rod is provided at the center of the top surface of the connecting member 4.
[0055] The advantage of this solution is that a detachable threaded connection is achieved through the first bolt head at the center of the slider of the linear module 3 and the first threaded hole of the connecting member 4, which is convenient for installation and disassembly, and can be replaced at any time if the connecting member 4 is damaged.
[0056] As a further solution of the utility model, a second threaded rod connected to the support shell 5 is provided at the center of the bottom surface of the connecting member 4, and a second threaded hole matched with the second threaded rod is provided at one end of the support shell 5.
[0057] The advantage of this solution is that a detachable connection is achieved through the second bolt head of the connecting piece 4 and the second bolt hole of the supporting shell 5, which is convenient for disassembling the telescopic device after placing the tunnel model at a preset position, avoiding damage to the telescopic device caused by blasting impact, and facilitating the maintenance or replacement of the telescopic device in subsequent use; in addition, the second bolt head is located in the center of the slider to ensure the stability of the force, ensure uniform force during sliding, and will not cause the existing tunnel model to fall off during sliding.
[0058] As a further solution of the utility model, a third threaded rod connected to the electric clamp 7 is provided at one end of the electric push rod 6, and a third threaded hole matched with the third threaded rod is provided at the center of the top surface of the electric clamp 7.
[0059] The advantage of this solution is that a detachable connection is achieved through the third bolt head of the electric push rod 6 and the third bolt hole of the electric clamp 7, which is convenient for placing the tunnel model at a preset position and then clamping the electric clamp 7, thereby avoiding damage to the electric clamp 7 caused by blasting impact, and facilitating maintenance or replacement of the electric clamp 7 in subsequent use; in addition, the third bolt hole is located in the center of the electric clamp 7 to ensure the stability of the force, ensure uniform force during the clamping process, and prevent the existing tunnel model from falling off during clamping and movement.
[0060] As a further solution of the present invention, the included angle between the central axis of the electric push rod 6 and the central axis of the guide rail of the linear module 3 is 90°.
[0061] The advantage of this solution is that the angle between the central axis of the electric push rod 6 and the central axis of the guide rail of the linear module 3 is 90°, so that the sliding device and the telescopic device are vertically connected at 90° as a whole. The vertical connection method allows the two devices to occupy smaller space when used in combination, which is suitable for the model box 1 with limited space; in addition, the vertical connection method allows the two devices to better withstand the pressure and weight brought by the tunnel model in the vertical direction when used in combination.
[0062] As a further solution of the utility model, the model box 1 is a glass fiber reinforced plastic box.
[0063] The advantage of this solution is that the FRP box has stronger rigidity, can withstand the impact caused by blasting, and is not easily damaged; in addition, the transparent FRP also makes it convenient for operators to intuitively observe the changes inside the box after the experiment begins.
[0064] As a further solution of the present invention, the clamping surface of the electric clamping jaw 7 is also provided with anti-slip grooves.
[0065] The advantage of this solution is that providing anti-slip grooves on the clamping surface of the electric clamp 7 can increase the adhesion and friction between the clamping surface and the surface of the object, so that the clamping surface can better clamp the tunnel model and avoid loosening during the transportation of the tunnel model.
[0066] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A device for simulating the impact of blasting a new tunnel on an existing tunnel, characterized in that: The device comprises: A model box (1), the model box (1) having an opening at the top and a plurality of excavation openings (8) at the bottom, each of the excavation openings (8) being provided with a sealing plate, and the inner walls of the side and bottom surfaces of the model box (1) being provided with gaskets (9) for absorbing blasting stress waves; A sliding device, the sliding device comprising a carrying plate (2), a linear module (3) and a connecting piece (4), the carrying plate (2) being mounted on the top of the model box (1), the linear module (3) being fixed on the carrying plate (2), the connecting piece (4) being connected to the bottom of a slider of the linear module (3), and the linear module (3) being able to drive the connecting piece (4) to translate in the model box (1); A telescopic device, the telescopic device comprising a supporting shell (5) and an electric push rod (6), one end of the supporting shell (5) being detachably connected to the bottom of the connecting member (4), and the other end being sleeved on the electric push rod (6); An electric clamp (7), wherein the electric clamp (7) is detachably connected to the other end of the electric push rod (6); The electric push rod (6) can drive the electric clamping claw (7) to rise and fall in the model box (1).
2. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: The gasket (9) is a rectangular honeycomb gasket.
3. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: A buckle (10) is also provided at the location where the mounting plate (2) contacts the model box (1).
4. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: A shock-absorbing pad is provided between the connecting member (4) and the slider of the linear module (3).
5. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: A first threaded rod connected to the connecting member (4) is provided at the center of the bottom of the slider of the linear module (3), and a first threaded hole matched with the threaded rod is provided at the center of the top surface of the connecting member (4).
6. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: A second threaded rod connected to the support shell (5) is provided at the center of the bottom surface of the connecting member (4), and a second threaded hole matched with the threaded rod is provided at one end of the support shell (5).
7. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: A third threaded rod connected to the electric clamp (7) is provided at one end of the electric push rod (6), and a third threaded hole matched with the threaded rod is provided at the center of the top surface of the electric clamp (7).
8. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: The included angle between the central axis of the electric push rod (6) and the central axis of the guide rail of the linear module (3) is 90°.
9. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: The model box (1) is a glass fiber reinforced plastic box.
10. The device for simulating the impact of blasting a new tunnel on an existing tunnel according to claim 1, characterized in that: The clamping surface of the electric clamping jaw (7) is also provided with anti-slip grooves.