Slag dump rock-soil body simulation experiment structure

Abstract

The utility model relates to the technical field of waste slag field simulation tests, in particular to a waste slag field rock-soil body simulation experiment structure which comprises a test bed, a rock-soil box and an air blowing unit, the rock-soil box is detachably installed on the test bed, the air blowing unit is arranged on one side of the test bed, and the air blowing unit is arranged on the other side of the test bed. The air blowing unit is used for blowing air to the rock-soil box; the air blowing unit comprises a cylinder base, a sliding sheet column and a pushing part, a sealing cavity is formed in the cylinder base, the sliding sheet column is connected into the sealing cavity in a sealing and sliding mode, and the pushing part is connected with the sliding sheet column and used for driving the sliding sheet column to slide in the cylinder base; the top of the cylinder seat is provided with a pipeline communicated with the sealing cavity, and the pipeline is used for enabling airflow in the sealing cavity to enter the rock-soil box, so that the problem that the intermittent impact effect of natural wind conditions cannot be restored by adopting a continuous constant blowing mode in existing wind erosion simulation is solved; and a deviation exists between experimental data and a real wind erosion damage rule.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of abandoned slag field simulation test, concretely relates to a kind of abandoned slag field rock-soil body simulation experiment structure. BACKGROUND

[0002] As the typical accumulation of rock-soil waste in mine engineering and infrastructure activities, the surface soil of abandoned slag field is loose in structure and uneven in particle size distribution. Under the long-term weathering effect, it is prone to problems such as increase in soil bulk density and decrease in porosity, leading to decreased permeability and deteriorated shear strength. Current research on the stability of abandoned slag field focuses on the failure mechanism under static load, seepage and seismic action, but there is a significant lack of research on wind erosion under strong wind conditions. In the prior art, the damage effect of wind load on abandoned slag field is often simplified as a static wind pressure model, and the simulation experiment for wind erosion is usually carried out in a constant blowing mode, which cannot truly restore the pulsating characteristics of wind speed in natural environment and the dynamic stripping effect of wind speed on the surface layer of abandoned slag rock-soil body. This method ignores the intermittent impact of airflow on rock-soil body, resulting in deviation of experimental data from the real wind erosion damage rule.

[0003] Therefore, the inventor proposes an abandoned slag field rock-soil body simulation experiment structure to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide an abandoned slag field rock-soil body simulation experiment structure to solve the problem that the existing wind erosion simulation cannot restore the intermittent impact effect of natural wind conditions in a constant blowing mode, resulting in deviation of experimental data from the real wind erosion damage rule.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] An abandoned slag field rock-soil body simulation experiment structure includes a test bench, a rock-soil box and a gas blowing unit. The rock-soil box is detachably installed on the test bench, and the gas blowing unit is arranged on one side of the test bench. The gas blowing unit is used to blow gas into the rock-soil box.

[0007] The gas blowing unit includes a cylinder seat, a sliding sheet column and a pushing piece. A sealed cavity is formed in the cylinder seat. The sliding sheet column is sealingly and slidingly connected in the sealed cavity. The pushing piece is connected with the sliding sheet column to drive the sliding sheet column to slide in the cylinder seat.

[0008] A pipeline is arranged on the top of the cylinder seat and communicates with the sealed cavity. The pipeline is used to pass the airflow in the sealed cavity into the rock-soil box.

[0009] Further, the cylinder seat comprises a plate body, a cylinder body and a mounting plate, the mounting plate and the cylinder body are fixed with the plate body, and a plurality of mounting holes are formed in the mounting plate.

[0010] According to the above technical scheme, the cylinder body internally seals the cavity to accommodate the slide column to form a gas pump mechanism, and the mounting plate is fixed to the test table through the mounting holes by bolts; when the pusher drives the slide column to reciprocate, the intermittent transmission of the airflow is realized.

[0011] Further, the pusher comprises two brackets, two tooth rings, two gears and a connecting rod, the two brackets and the two tooth rings are fixedly arranged at the bottom of the plate body, and the gears are correspondingly arranged in the tooth rings;

[0012] The two ends of the connecting rod are connected with the two gears, and a push rod is connected to the middle position of the connecting rod and extends into the cylinder body and is hinged with the slide column;

[0013] The first supporting rod is rotatably connected to the bracket, the second supporting rod is connected to the gear, and when the first supporting rod rotates, the gear rotates around the tooth ring.

[0014] Further, the motor is arranged on one side of the test table, the output shaft of the motor is connected with a driving shaft, and the driving shaft is connected with the first supporting rod.

[0015] According to the above technical scheme, the first supporting rod is driven to rotate by the motor driving shaft, the gear is driven to move along the tooth ring by the second supporting rod linkage, the second supporting rod drives the gear to revolve around the center of the tooth ring, the phases of the two gears are synchronized by the connecting rod, the circular motion of the gear is converted into the vertical reciprocating motion of the slide column by the push rod, and the characteristics of the intermittent impact of natural wind are reproduced by increasing or reducing the volume of the sealed cavity.

[0016] Further, the cylinder body is provided with an air inlet, and a first one-way valve diaphragm is arranged at the air inlet.

[0017] The top of the cylinder body is provided with an air outlet, a pipeline is arranged on the air outlet, and a second one-way valve diaphragm is arranged at the air outlet.

[0018] According to the above technical scheme, the cylinder body realizes directional control of the airflow by the reciprocating motion of the slide column: when the slide column moves downward, the volume of the sealed cavity expands to form negative pressure, driving the first one-way valve diaphragm to open and inhale external air; when the slide column moves upward, the internal pressure of the cavity increases, driving the second one-way valve diaphragm to open and press the airflow into the pipeline to form a one-way airflow circulation system, and under the periodic motion of the slide column, intermittent pulse airflow is generated to accurately simulate the intermittent impact characteristics of natural wind conditions.

[0019] Further, the rock-soil box comprises a frame body and a side plate, the frame body and the side plate jointly enclose an upwardly-open frame structure, the side plate is provided with a first accommodating cavity, the side plate is provided with a plurality of air holes in communication with the first accommodating cavity, and the side plate is provided with a first interface pipe in communication with the first accommodating cavity.

[0020] Further, the top of the frame structure is detachably provided with a top plate, the top plate is provided with a second accommodating cavity, and the top plate is provided with a plurality of holes in communication with the second accommodating cavity.

[0021] According to the above technical scheme, the rock-soil box forms a rock-soil body simulation experiment space through the frame body and the side plate, the first accommodating cavity embedded in the side plate forms a horizontal airflow channel through the air hole group: when the pulse airflow is injected into the accommodating cavity through the first interface pipe, the airflow is uniformly diffused along the first accommodating cavity and then sprayed out of the air hole, simulating the wind erosion effect; the top plate forms a vertical airflow network or a spraying network through the second accommodating cavity and the hole, and can realize switching of a gas-gas or gas-liquid combined erosion scene, and can accurately reproduce the dynamic peeling process of the surface layer particles of the rock-soil body in cooperation.

[0022] Further, the pipeline comprises a second interface pipe and a first connecting pipe, the second interface pipe is in communication with the air outlet, one end of the first connecting pipe is in communication with the second interface pipe, and the other end of the first connecting pipe is in communication with the first interface pipe.

[0023] Further, the pipeline comprises a second connecting pipe;

[0024] One end of the second connecting pipe is in communication with the second accommodating cavity, and the other end of the second connecting pipe is in communication with the first connecting pipe.

[0025] According to the above technical scheme, the pulse airflow enters the first connecting pipe through the second interface pipe and is divided into two paths: the main path injects the horizontal wind erosion flow into the air hole of the side plate through the first interface pipe, and the branch path generates the vertical impact flow through the second connecting pipe and the hole of the top plate, so that three-dimensional combined wind erosion simulation is realized.

[0026] Further, the pipeline comprises a second connecting pipe; one end of the second connecting pipe is in communication with the second accommodating cavity, and the other end of the second connecting pipe is connected with a water inlet pipe.

[0027] According to the above technical scheme, after the second connecting pipe is replaced with the water inlet pipe, the water flow forms an atomizing spraying system through the second accommodating cavity and the hole of the top plate, at this time, the first connecting pipe continuously transports the airflow, so that the gas-liquid two-phase flow generates the synergistic erosion effect of mud splashing and wind scouring in the rock-soil box, and only the connection mode needs to be replaced to quickly switch the pure airflow and the gas-liquid mixed experiment mode.

[0028] The rock-soil box has the advantages that:

[0029] The utility model discloses a pusher drive sliding vane column in the sealed cavity of cylinder base periodic reciprocating motion realizes intermittent blowing, and the push rod pulls down the sliding vane column and makes the sealed cavity volume increase and form negative pressure, and the first check valve diaphragm of air inlet opens and inhales air at this time, when the gear continues to rotate around the gear ring, the push rod pushes the sliding vane column and moves up and compresses the sealed cavity, and the air pressure in the sealed cavity rises and forces the second check valve diaphragm to open, and the compressed air is pulsed and spouted into the rock-soil box side plate air hole through the pipeline, forms intermittent impact airflow that meets the natural wind pulse characteristic, simulates the dynamic peeling effect in the actual wind erosion process.

[0030] Other advantages, objects, and features of the present application will be better understood from the following specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the structure schematic drawing of the utility model discloses the structure example one of waste dump rock-soil body simulation experiment;

[0032] Figure 2 It is the structure schematic drawing of the utility model discloses the structure example two of waste dump rock-soil body simulation experiment;

[0033] Figure 3 It is the sectional view schematic drawing of the rock-soil box and top plate in the utility model discloses the structure of waste dump rock-soil body simulation experiment;

[0034] Figure 4 It is the structure schematic drawing of the blowing unit in the utility model discloses the structure of waste dump rock-soil body simulation experiment;

[0035] Figure 5 It is the split structure schematic drawing of the blowing unit in the utility model discloses the structure of waste dump rock-soil body simulation experiment;

[0036] Figure 6 It is the sectional view schematic drawing of the blowing unit in the utility model discloses the structure of waste dump rock-soil body simulation experiment;

[0037] Figure 7 It is the A part enlarged structure schematic drawing of the utility model discloses the structure of waste dump rock-soil body simulation experiment Figure 6

[0038] ​The test table 1, the rock-soil box 2, the frame body 21, the side plate 22, the first containing cavity 221, the air hole 222, the first interface pipe 223, the air blowing unit 3, the barrel seat 31, the plate body 311, the barrel body 312, the air inlet 3121, the first one-way valve diaphragm 3122, the air outlet 3123, the second one-way valve diaphragm 3124, the mounting plate 313, the mounting hole 314, the sliding piece column 32, the pusher 33, the support 331, the gear ring 332, the gear wheel 333, the connecting rod 334, the push rod 335, the first supporting rod 336, the second supporting rod 337, the pipeline 34, the second interface pipe 341, the first connecting pipe 342, the second connecting pipe 343, the water inlet pipe 344, the motor 4, the driving shaft 5, the top plate 6, the second containing cavity 61 and the hole 62. DETAILED DESCRIPTION

[0039] Other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the present specification without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, but not for limiting the protection scope of the present application.

[0040] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, but not drawn according to the number, shape and size of the components in actual implementation. The type, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type can also be more complex.

[0041] The present embodiment provides a waste dump rock-soil body simulation experiment structure, as shown in the figure, comprising a test table 1, a rock-soil box 2 and an air blowing unit 3. Figures 1 to 7 The rock-soil box 2 is detachably installed on the test table 1 in a bolted manner, and the air blowing unit 3 is arranged on the right side of the test table 1. The air blowing unit 3 is used for blowing air to the rock-soil box 2.

[0042] The air blowing unit 3 comprises a barrel seat 31, a sliding piece column 32 and a pusher 33. The barrel seat 31 is internally provided with a sealed cavity. The sliding piece column 32 is sealingly and slidingly connected in the sealed cavity. The pusher 33 is connected with the sliding piece column 32 and used for driving the sliding piece column 32 to slide in the barrel seat 31. The top of the barrel seat 31 is provided with a pipeline 34 in communication with the sealed cavity. The pipeline 34 is used for passing the airflow in the sealed cavity into the rock-soil box 2.

[0043] As preferred, as shown in the figures, Figure 4 , Figure 5 and Figure 6As shown, the cylinder seat 31 comprises a plate body 311, a cylinder body 312 and a mounting plate 313, the mounting plate 313 and the cylinder body 312 are fixed with the plate body 311, a plurality of mounting holes 314 are formed on the mounting plate 313, and the mounting plate 313 is fixed to the test bench 1 through the mounting holes 314 by bolts.

[0044] The pushing member 33 comprises two brackets 331, two tooth rings 332, two gears 333 and a connecting rod 334, the two brackets 331 and the two tooth rings 332 are symmetrically fixed on the bottom of the plate body 311, the gear 333 is arranged in the tooth ring 332, and the gear 333 can rotate around the circumference of the tooth ring 332; the two ends of the connecting rod 334 are connected with the two gears 333, and a push rod 335 is connected to the middle position of the connecting rod 334, the bottom of the push rod 335 is movably sleeved on the middle position of the connecting rod 334, and the push rod 335 extends into the cylinder body 312 and is hinged with the sliding vane column 32;

[0045] The bracket 331 is rotatably connected with a first supporting rod 336, the first supporting rod 336 is connected with a second supporting rod 337, and the second supporting rod 337 is connected with the gear 333, so that when the first supporting rod 336 rotates, the gear 333 rotates around the tooth ring 332.

[0046] Further comprising a motor 4 arranged on the left side of the test bench 1, a driving shaft 5 is connected to the output shaft of the motor 4, and the driving shaft 5 is connected with one of the first supporting rods 336.

[0047] In this embodiment, the motor 4 drives the driving shaft 5 to rotate, the driving shaft 5 drives the first supporting rod 336 to rotate, and the gear 333 is driven to rotate around the center of the tooth ring 332 through the second supporting rod linkage, and the connecting rod 334 is driven to move by the two gears 333, since the push rod 335 is connected with the connecting rod 334, the vertical reciprocating motion of the sliding vane column 32 is further converted.

[0048] As a preferred embodiment, as shown in Figure 6 and Figure 7 As shown, the cylinder body 312 is provided with an air inlet 3121, and a first one-way valve diaphragm 3122 is arranged at the air inlet 3121; the top of the cylinder body 312 is provided with an air outlet 3123, and a pipeline 34 is arranged on the air outlet 3123, and a second one-way valve diaphragm 3124 is arranged at the air outlet 3123.

[0049] In this embodiment, the cylinder body 312 realizes airflow through the reciprocating motion of the sliding vane column 32: when the sliding vane column 32 moves downward, the negative pressure is formed by the expansion of the sealed cavity volume, the first one-way valve diaphragm 3122 is driven to open and inhale external air; when the sliding vane column 32 moves upward, the internal pressure of the cavity is increased, the second one-way valve diaphragm 3124 is pushed to open and the airflow is pressed into the pipeline 34, forming a one-way airflow circulation system, under the periodic motion of the sliding vane column 32, intermittent pulse airflow is generated, and the intermittent impact characteristics of natural wind conditions are accurately simulated.

[0050] As a preferred embodiment, the rock-soil box 2 is a transparent structure, and the rock-soil box 2 comprises a frame body 21 and a side plate 22, the frame body 21 and the side plate 22 jointly enclose an upwardly open frame structure, the side plate 22 is provided with a first accommodating cavity 221, the side plate 22 is provided with a plurality of air holes 222 in communication with the first accommodating cavity 221, the side plate 22 is provided with a first interface pipe 223, and the first interface pipe 223 is in communication with the first accommodating cavity 221. The frame structure is detachably provided with a top plate 6 at the top by means of bolt connection, the top plate 6 is provided with a second accommodating cavity 61, and the top plate 6 is provided with a plurality of holes 62 in communication with the second accommodating cavity 61.

[0051] According to the above technical scheme, the rock-soil box 2 forms a rock-soil body simulation experiment space through the frame body 21 and the side plate 22, the first accommodating cavity 221 embedded in the side plate 22 forms a horizontal air flow channel through the air holes 222, when the pulse air flow is injected into the accommodating cavity through the first interface pipe 223, the air flow is uniformly diffused along the first accommodating cavity 221 and then sprayed out of the air holes 222, simulating the wind erosion effect, the top plate 6 forms a vertical air flow network or a spraying network through the second accommodating cavity 61 and the holes 62, and the switching of the gas-gas or gas-liquid combined erosion scene can be realized, so as to accurately reproduce the dynamic peeling process of the surface layer particles of the rock-soil body in a synergistic manner.

[0052] Embodiment one

[0053] As shown in Figure 1 the pipeline 34 comprises a second interface pipe 341 and a first connecting pipe 342, the second interface pipe 341 is in communication with the air outlet 3123, one end of the first connecting pipe 342 is in communication with the second interface pipe 341, and the other end of the first connecting pipe 342 is in communication with the first interface pipe 223.

[0054] Specifically, the pipeline 34 comprises a second connecting pipe 343, one end of the second connecting pipe 343 is in communication with the second accommodating cavity 61, and the other end of the second connecting pipe 343 is in communication with the first connecting pipe 342. After the pulse air flow enters the first connecting pipe 342 through the second interface pipe 341, the pulse air flow is divided into a main path and a branch path, the main path forms a horizontal wind erosion flow by being injected into the air holes 222 of the side plate 22 through the first interface pipe 223, and the branch path generates a vertical impact flow by being introduced into the holes 62 of the top plate 6 through the second connecting pipe 343, thereby realizing three-dimensional combined wind erosion simulation.

[0055] Embodiment two

[0056] As shown in Figure 2As shown, the pipeline 34 comprises a second connecting pipe 343; one end of the second connecting pipe 343 is communicated with the second accommodating cavity 61, and the other end of the second connecting pipe 343 is connected with a water inlet pipe 344, and the water inlet pipe 344 is connected with a water pump. The difference between the embodiment and the above-mentioned embodiment is that: after the second connecting pipe 343 is connected with the water inlet pipe 344, the water flow forms an atomizing spraying system through the second accommodating cavity 61 and the hole 62 of the top plate 6, at this time, the first connecting pipe 342 continuously transports the gas flow, so that the gas-liquid two-phase flow generates a synergistic erosion effect of mud splashing and wind scouring in the rock-soil box 2, and only the connecting mode needs to be replaced, so that the pure gas flow and the gas-liquid mixed experimental mode can be quickly switched.

[0057] The intermittent air blowing is realized by periodically reciprocating the sliding column 32 in the sealing cavity of the cylinder base 31 through the pushing piece 33, the sliding column 32 is pulled down by the push rod 335 to increase the volume of the sealing cavity to form a negative pressure, at this time, the first one-way valve diaphragm 3122 of the air inlet 3121 is opened to inhale air; when the gear 333 continues to rotate around the tooth ring 332, the push rod 335 pushes the sliding column 32 to move upwards to compress the sealing cavity, the air pressure in the sealing cavity is increased to force the second one-way valve diaphragm 3124 to open, the compressed air is pulsedly sprayed into the air hole 222 of the side plate 22 through the pipeline 34, intermittent impact air flow conforming to the natural wind pulse characteristics is formed, and the dynamic peeling effect in the actual wind erosion process is simulated.

[0058] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent replacement or transformation of the technical personnel in the technical field on the basis of the present application is within the protection scope of the present application.

Claims

1. A structure for a simulation experiment of a rock-soil mass of a waste disposal site, characterized by comprising: The utility model relates to a test bench (1), soil box (2) and blowing unit (3), soil box (2) is detachably installed on test bench (1), blowing unit (3) is set up in one side of test bench (1), blowing unit (3) is used to blow to soil box (2) with air; Blowing unit (3) includes cylinder seat (31), sliding sheet column (32) and pusher (33), the sealing cavity is seted up in cylinder seat (31), sliding sheet column (32) is sealed and is connected in sealing cavity, pusher (33) is connected with sliding sheet column (32), is used to drive sliding sheet column (32) sliding in cylinder seat (31); The top of cylinder seat (31) is provided with pipeline (34) that communicates with the sealing cavity, the pipeline (34) is used for the airflow in the sealing cavity into soil box (2) in. Cylinder seat (31) includes plate body (311), cylinder body (312) and mounting plate (313), mounting plate (313) and cylinder body (312) are fixed with plate body (311), a plurality of mounting holes (314) are formed in mounting plate (313).

2. The waste dump rock mass analogue experimental structure according to claim 1, characterised in that: Pusher (33) includes two supports (331), two tooth rings (332), two gears (333) and connecting rod (334), two supports (331) and two tooth rings (332) are fixedly arranged at the bottom of plate body (311), the gear (333) is correspondingly arranged in the tooth ring (332) of one thereof; 3. The waste dump rock mass analogue experimental structure according to claim 2, characterised in that: Both ends of connecting rod (334) are connected with two gears (333), and a push rod (335) is connected to the middle part of connecting rod (334), and the push rod (335) extends into the cylinder body (312) and is hinged with the sliding sheet column (32); The first branch rod (336) is rotatably connected to the support (331), the second branch rod (337) is connected to the first branch rod (336), and the second branch rod (337) is connected with the gear (333), when the first branch rod (336) rotates, the gear (333) rotates around the tooth ring (332). The utility model also includes a motor (4) arranged on one side of the test bench (1), a drive shaft (5) is connected to the output shaft of the motor (4), and the drive shaft (5) is connected to the first branch rod (336).

4. The waste dump rock mass analogue experimental structure according to claim 3, characterised in that: An air inlet (3121) is formed in the cylinder body (312), and a first one-way valve diaphragm (3122) is installed at the air inlet (3121); 5. The waste dump rock mass analogue experimental structure according to claim 4, characterised in that: An air outlet (3123) is arranged at the top of the cylinder body (312), the pipeline (34) is installed on the air outlet (3123), and a second one-way valve diaphragm (3124) is arranged at the air outlet (3123). ​ 6. The waste dump rock mass analogue experimental structure according to claim 5, characterised in that: The rock-soil box (2) comprises a frame body (21) and a side plate (22), the frame body (21) and the side plate (22) jointly form an upwardly open frame structure, the side plate (22) is provided with a first accommodating cavity (221), the side plate (22) is provided with a plurality of air holes (222) communicated with the first accommodating cavity (221), and the side plate (22) is provided with a first interface pipe (223) communicated with the first accommodating cavity (221).

7. The waste dump rock mass analogue experimental structure according to claim 6, characterised in that: The top of the frame structure is detachably provided with a top plate (6), the top plate (6) is provided with a second accommodating cavity (61), and the top plate (6) is provided with a plurality of holes (62) communicated with the second accommodating cavity (61).

8. The waste dump rock mass analogue experimental structure according to claim 7, characterised in that: The pipeline (34) comprises a second interface pipe (341) and a first connecting pipe (342), the second interface pipe (341) is communicated with the air outlet (3123), one end of the first connecting pipe (342) is communicated with the second interface pipe (341), and the other end of the first connecting pipe (342) is communicated with the first interface pipe (223).

9. The waste dump rock mass analogue experimental structure according to claim 8, characterised in that: The pipeline (34) comprises a second connecting pipe (343); One end of the second connecting pipe (343) is communicated with the second accommodating cavity (61), and the other end of the second connecting pipe (343) is communicated with the first connecting pipe (342).

10. The waste dump rock mass analogue experimental structure according to claim 8, characterised in that: The pipeline (34) comprises a second connecting pipe (343); one end of the second connecting pipe (343) is communicated with the second accommodating cavity (61), and the other end of the second connecting pipe (343) is connected with a water inlet pipe (344).

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