Testing device for simulating slag slipping of large longitudinal slope dragon tail-falling type tunnel slag slipping well

Abstract

The utility model discloses a test device for simulating slag slipping of a slag slipping well of a large longitudinal slope dragon tail type tunnel. The test device comprises a corner hydraulic device, a sliding seat, a rotating seat, a slag slipping well model shaft and an image acquisition device, the discharging end of the slag slipping well model shaft is rotationally connected with the rotating seat, and the feeding end of the slag slipping well model shaft is connected with the sliding seat and can move along an arc-shaped track; the corner hydraulic device is connected with the slag slipping well model shaft and used for enabling the slag slipping well model shaft to rotate with the rotating base as the axis, and the image collecting device is used for collecting images of the discharging end of the slag slipping well model shaft; according to the slag slipping well model shaft, angle adjustment is conducted through the corner hydraulic device, angle positioning is conducted through the limiting plate, the inclination angle adjustment of the slag slipping well model shaft is accurately controlled, the rock slag form in the slag slipping process is recorded through the high-speed phase, and the operation conditions and the rock slag removal process of a tunnel construction site are accurately simulated; and the test result is ensured to have relatively high reliability and authenticity.

Description

Technical Field

[0001] The utility model relates to the technical field of ore pass experimental devices, in particular to a test device for simulating the slag flow of a large longitudinal slope dragon-tail type tunnel ore pass. Background Technique

[0002] The large longitudinal slope tunnel ore pass plays an important transportation role in underground engineering and tunnel construction, and is used to remove the slag and dirt inside the tunnel to ensure the smooth progress of the construction process. However, during the actual production process of the ore pass, problems such as ore pass blockage and well wall damage will occur, increasing the maintenance cost and affecting the normal operation of the ore pass. Therefore, it is very important to conduct slag flow simulation tests on the ore pass before and after construction. The design and performance of the tunnel ore pass directly affect the construction efficiency and tunnel quality. In order to verify the effectiveness and performance of the tunnel ore pass design. The slag flow test needs to simulate the slag removal process under actual construction conditions to evaluate the applicability and performance of the ore pass design.

[0003] At present, the experimental research on the ore pass mostly adopts research methods such as numerical simulation and theoretical analysis, but the prediction of the actual slag flow process lacks accuracy and has a large gap with the actual situation. Therefore, developing a reliable tunnel ore pass slag flow test device is of great significance for optimizing the tunnel construction process and improving the construction efficiency. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a test device for simulating the slag flow of a large longitudinal slope dragon-tail type tunnel ore pass, providing a theoretical basis for the design of the large longitudinal slope tunnel ore pass and effectively improving the construction efficiency of the tunnel.

[0005] The utility model is realized through the following technical solutions:

[0006] A test device for simulating the slag flow of a large longitudinal slope dragon-tail type tunnel ore pass, comprising a corner hydraulic device, a sliding seat, a rotating seat, a model shaft of the ore pass and an image acquisition device;

[0007] The discharge end of the model shaft of the ore pass is rotatably connected to the rotating seat, and the feed end of the model shaft of the ore pass is connected to the sliding seat and can move along an arc trajectory;

[0008] The corner hydraulic device is connected to the model shaft of the ore pass for rotating the model shaft of the ore pass around the rotating seat as the axis, and the image acquisition device is used to collect the image of the discharge end of the model shaft of the ore pass.

[0009] Preferably, the sliding seat includes two fixing plates arranged in parallel at intervals, and the feed end of the model shaft of the ore pass is located between the two fixing plates;

[0010] An arc-shaped chute is provided on the fixed plate, and a fixed shaft is provided on the side wall of the slag-chute well model shaft. The fixed shaft is arranged in the arc-shaped chute.

[0011] Preferably, an angle adjustment plate is provided on the fixed plate, and the arc-shaped chute is arranged on the active rotating seat.

[0012] Preferably, a limiting device is provided on the sliding seat for positioning the angle of the slag-chute well model shaft.

[0013] Preferably, the limiting device includes a limiting groove and a limiting plate;

[0014] The limiting grooves are arranged on both sides of the arc-shaped chute. The limiting grooves are arc-shaped grooves and are concentric with the arc-shaped chute. Two limiting plates are arranged in the limiting grooves and can move. The fixed shaft is located between the two limiting plates.

[0015] Preferably, an active rotating seat is provided on the slag-chute well model shaft, and the active rotating seat is slidably connected with the sliding seat.

[0016] Preferably, an angle scale is provided on the sliding seat.

[0017] Preferably, an aggregate chute is provided at the discharge end of the slag-chute well model shaft.

[0018] Preferably, the image acquisition device is a high-speed camera.

[0019] Preferably, the sliding seat and the rotating seat are arranged on the base.

[0020] Compared with the prior art, the utility model has the following beneficial technical effects:

[0021] The test device for simulating the slag flow of a large longitudinal slope dragon-tail type tunnel slag-chute well provided by the utility model adopts a corner hydraulic device for angle adjustment and positions the angle through a limiting plate, precisely controlling the adjustment of the inclination angle of the slag-chute well model shaft. An image acquisition device is arranged at the discharge end of the slag-chute well model shaft to collect the records of the rock slag morphology during the slag flow process, thereby obtaining the downward flow morphology of rock slag with different gradations. According to the morphology, the optimal gradation of rock slag and the angle of the slag-chute well are determined, so as to guide the tunnel construction and avoid the problem of slag-chute well blockage. The device is simple to operate, can accurately simulate the operation conditions and the rock slag discharge process at the tunnel construction site, provides a scientific basis and technical support for the design of the tunnel slag-chute well slag flow, and improves the quality and construction efficiency of the tunnel project. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the test device of the utility model;

[0023] Figure 2It is a top - view structural schematic diagram of the test device of the present utility model;

[0024] Figure 3 It is a right - view structural schematic diagram of the test device of the present utility model;

[0025] Figure 4 It is a front - view structural schematic diagram of the test device of the present utility model.

[0026] In the figure: 1. Angle adjustment plate; 2. Hinge shaft; 3. Hydraulic hinge seat; 4. Corner hydraulic device; 5. Base; 6. Sliding seat; 7. Limit plate; 8. Limit bolt; 9. Fixed bolt; 10. Active rotating seat; 11. Rotating ring; 12. Fixed bolt; 13. Central hinge shaft; 14. Hinge seat; 15. Slag - discharging well model shaft; 16. Aggregate trough; 17. High - speed camera; 18. Camera base. Specific implementation mode

[0027] The following further elaborates on the present utility model in conjunction with the attached drawings, which is an explanation rather than a limitation of the present utility model.

[0028] Refer to Figures 1-4 , a test device for simulating the slag - discharging of a large - longitudinal - slope dragon - tail - type tunnel slag - discharging well, including a corner hydraulic device 4, a base 5, a sliding seat 6, a rotating seat, a slag - discharging well model shaft 15, an aggregate trough 16 and an image acquisition device.

[0029] The sliding seat 6 and the rotating seat are arranged on the top of the base. The feeding end of the slag - discharging well model shaft 15 is connected to the sliding seat 6 and can move along an arc - shaped trajectory. The discharging end of the slag - discharging well model shaft 15 is rotatably connected to the rotating seat. The corner hydraulic device 4 is arranged on the base and connected to the slag - discharging well model shaft 15, and is used to make the slag - discharging well model shaft 15 rotate around the rotating seat as the axis to simulate the inclination angle of the tunnel slag - discharging well. The aggregate trough 16 is arranged at the discharging port of the slag - discharging well model shaft 15, and the image acquisition device is used to collect the images of the discharging end of the slag - discharging well model shaft 15.

[0030] The sliding seat 6 includes two parallel and spaced - apart fixed plates. The feeding end of the slag - discharging well model shaft 15 is located between the two fixed plates. Arc - shaped chutes are arranged on the fixed plates. Two fixed shafts are arranged on the side wall of the discharging end of the slag - discharging well model shaft 15, and the fixed shafts are arranged in the arc - shaped chutes. When the angle of the slag - discharging well model shaft 15 changes, the fixed shafts slide in the arc - shaped chutes.

[0031] In some embodiments, an angle adjustment plate 1 is arranged on the fixed plate, and the arc - shaped chute is arranged on the active rotating seat 10. Since the overall size of the fixed plate is large and not convenient for processing, an independent angle adjustment plate is used to process the arc - shaped chute, reducing the processing difficulty.

[0032] In some embodiments, a limiting device is further provided on the sliding seat 6 for positioning the angle of the wellbore 15 of the slag chute well model; the limiting device includes a limiting groove and a limiting plate 7.

[0033] The limiting grooves are arranged on both sides of the arc-shaped chute. The limiting grooves are arc-shaped grooves and are concentric with the arc-shaped chute. Two limiting plates are arranged at both ends of the limiting grooves and are fixed by limiting bolts. The position of the limiting plate can be adjusted through the limiting bolts to limit the rotation angle of the wellbore 15 of the slag chute well model.

[0034] Refer to Figure 2 and 3 , in this embodiment, the limiting device is arranged on the angle adjusting plate 1.

[0035] In some embodiments, a driving rotating seat 10 is arranged on the wellbore of the slag chute well model. The driving rotating seat 10 is of a hoop structure. Coaxial fixed shafts are symmetrically arranged along the axis of the driving rotating seat 10, and the fixed shafts are located in the arc-shaped chute.

[0036] The hoop structure includes two semi-circular hoop plates. The two hoop plates are wrapped around the wellbore of the slag chute well model. The two hoop plates are connected by fixing bolts 9, and the two fixed shafts are respectively arranged on the two hoop plates.

[0037] The corner hydraulic device 4 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the base, the piston rod of the hydraulic cylinder is connected to the hydraulic hinge seat 3, and the hydraulic hinge seat 3 is connected to the driving rotating seat 10 through a hinge shaft.

[0038] The rotating seat includes a hinge seat 14 and a rotating ring 11. The rotating ring 11 is sleeved on one side of the discharge end of the wellbore 15 of the slag chute well model. A central hinge shaft 13 is arranged on the rotating ring 11, and the central hinge shaft 13 is rotatably connected to the hinge seat. When the angle of the wellbore 15 of the slag chute well model needs to be adjusted, with the central hinge shaft 13 as the axis, the height of the feed end of the wellbore 15 of the slag chute well model is rotated.

[0039] The rotating ring is of a hoop structure and includes two semi-circular connecting plates, and the two connecting plates are connected by fixing screws 12.

[0040] The image acquisition device includes a high-speed camera 17 and a camera base 18. The high-speed camera 17 is arranged on the top of the camera base, and the lens of the high-speed camera 17 faces the discharge port of the wellbore 15 of the slag chute well model.

[0041] As a further optimization, both sides of the articulated rotating ring 11 are connected to the central hinge seat 14 through the central hinge shaft 13, and a bearing is installed between the two.

[0042] As a further optimization, the inner part of the shaft model of the slag-chute well is coated with materials such as paraffin mixed sand and gypsum to simulate different roughness degrees of the shaft wall.

[0043] The test method of a test device for simulating the slag-chuting of a large longitudinal slope dragon-tail type tunnel slag-chute well in this embodiment is as follows:

[0044] Determine the design angle range of the slag-chute well according to the physical properties of the tunnel rock, the structure and construction conditions of the slag-chute well, and adjust the inclination angle of the shaft 15 of the slag-chute well model according to the design angle. For example, if the current angle of the shaft 15 of the slag-chute well model is 20°, and the design angle is 45°-50°, then first adjust the angle of the shaft of the slag-chute well model to 45°, and the adjustment method is as follows:

[0045] First, loosen the limit bolt of the upper limit plate to make the limit plate slide down along the limit groove. According to the angle scale line on the fixed plate, move the lower edge of the limit plate to the 45° scale line, and then lock the limit nut. It should be noted that the limit plates on both fixed plates need to be adjusted.

[0046] Then, start the corner hydraulic device 4 to make the piston rod move upward, so that the active rotating seat 10 moves along the arc-shaped chute on the sliding seat 6 until the fixed shaft of the active rotating seat 10 abuts against the limit plate 7, and then turn off the corner hydraulic device 4.

[0047] Then, move the lower limit plate upward along the limit groove until the upper edge of the lower limit plate abuts against the fixed shaft. The moving method of the lower limit plate is the same as that of the upper limit plate, only the direction is different, so it will not be elaborated. Position the fixed shaft through the upper limit plate and the lower limit plate, that is, realize the angle adjustment and positioning of the shaft of the slag-chute well model.

[0048] Secondly, pour rock slag with different gradations into the feeding end of the shaft of the slag-chute well model respectively. The rock slag slides out from the discharging end and falls into the aggregate tank 16 for collection. Use the high-speed camera 17 fixed on the camera base 18, with the lens facing the discharging end of the shaft of the slag-chute well model, to record the shape of the rock slag during the slag-chuting process, or use a depth camera to identify the characteristics of the rock slag, and obtain the sliding state of the rock slag with different gradations at this angle, so as to accurately simulate the operation conditions at the tunnel construction site and the process of rock slag removal.

[0049] Finally, gradually increase the angle of the shaft of the slag-chute well model by the above method, collect the shapes of the rock slag with different gradations at different angles of the shaft of the slag-chute well model, and select the optimal design angle and the rock slag with the optimal gradation to guide the tunnel construction.

[0050] The above content is only to illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. A test device for simulating the slag sluice of a slag sluice pit in a large longitudinal slope dragon tail type tunnel, characterized in that: It includes a hydraulic device for turning angle, a sliding seat, a rotating seat, a slag well model shaft and an image acquisition device; The discharge end of the slag well model shaft is rotatably connected to the rotating seat, and the feed end of the slag well model shaft is connected to the sliding seat and can move along an arc track; The angle hydraulic device is connected to the slag well model shaft and is used to rotate the slag well model shaft around the rotating seat as the axis. The image acquisition device is used to acquire images of the discharge end of the slag well model shaft.

2. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 1, characterized in that: The sliding seat comprises two fixed plates arranged in parallel and at intervals, and the feed end of the shaft of the slag well model is located between the two fixed plates; The fixed plate is provided with an arc-shaped chute, and the side wall of the slag chute model shaft is provided with a fixed shaft, which is arranged in the arc-shaped chute.

3. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 2, characterized in that: The fixing plate is provided with an angle adjustment plate, and the arc-shaped slide groove is provided on the active rotating seat.

4. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 2, characterized in that: The sliding seat is provided with a limiting device for angular positioning of the shaft of the slag well model.

5. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 4, characterized in that: The limiting device includes a limiting groove and a limiting plate; The limiting grooves are arranged on both sides of the arc-shaped slide groove. The limiting grooves are arc-shaped grooves and are arranged concentrically with the arc-shaped slide groove. Two limiting plates are arranged in the limiting grooves and can move. The fixed shaft is located between the two limiting plates.

6. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 1, characterized in that: An active rotating seat is arranged on the shaft of the slag well model, and the active rotating seat is slidably connected with the sliding seat.

7. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 1, characterized in that: An angle scale is arranged on the sliding seat.

8. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 1, characterized in that: The discharge end of the slag well model shaft is provided with a collection trough.

9. The test device for simulating slag sluice in a slag sluice pit of a large longitudinal slope dragon tail type tunnel according to claim 1, characterized in that: The image acquisition device is a high-speed camera.

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