CN112945735A - Layered triaxial experiment tailing sample loading device - Google Patents
Layered triaxial experiment tailing sample loading device Download PDFInfo
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- 238000002474 experimental method Methods 0.000 title claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 64
- 239000000463 material Substances 0.000 claims abstract description 59
- 238000003756 stirring Methods 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 19
- 239000004575 stone Substances 0.000 claims description 12
- 229940099259 vaseline Drugs 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
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- 241001330002 Bambuseae Species 0.000 claims description 2
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- 239000011425 bamboo Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 claims 3
- 239000010409 thin film Substances 0.000 claims 1
- 238000005303 weighing Methods 0.000 abstract description 5
- 239000002985 plastic film Substances 0.000 abstract 1
- 229920006255 plastic film Polymers 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
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- 239000011707 mineral Substances 0.000 description 1
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- 238000005381 potential energy Methods 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to a layered triaxial experiment tailing material sample loading device, and belongs to the field of mine geotechnical engineering experiment devices. The whole device comprises a feeding device, a vacuum air exhaust device, a sample layering device, a sample loading cylinder, a vibration sample loading device, an instrument control device and the like. The feeding device can quantitatively test the needed tailings, and the tailings are uniformly poured into the vibrating sample loading device at the lower part after being stirred. The vacuum air extractor can make the plastic film tightly attached to the sample loading cylinder. The sample layering device can realize sample layering and enable a sample layering interface to form different angles. The vibration sample loading device can enable the layered compacted sample to be more uniform and is convenient for the layered slope surface of the sample to form a preset inclination angle. The device integrates weighing, layering, uniform vibration and rubber film vacuumizing of tailing material sample loading, and supports different inclination angles of the layered slope surface. The error caused by manual sample loading is effectively avoided, and the corresponding triaxial experiment can be completed according to different experimental requirements of different working conditions.
Description
Technical Field
The invention relates to a layered triaxial experiment tailing material sample loading device, and belongs to the technical field of mine geotechnical engineering.
Background
The tailings pond is a great danger source of a mine and is a high-potential energy artificial debris flow source body. In recent years, with the improvement of the mineral separation process, the particle size of tailings is thinner and thinner, and the earthquake activity in China is very active, so that the problem of stability of tailings ponds in earthquake zone areas is concerned. However, most of the existing researches on the safety coefficient of the tailing pond mainly stay on the tailing pond consisting of single tailing materials, the mechanical characteristics of the tailing pond consisting of multiple layers of tailing materials are less researched, and the stability of the multilayer tailing pond with different inclination angles is further lack of research.
The most common dam-piling materials in a tailing pond, namely tailing materials such as tailing sand and tailings soil, are used as main research objects, and dynamic triaxial tests or static triaxial tests are adopted to influence the mechanical properties of the materials under different pressure conditions. However, in the conventional triaxial test sample loading process, the error of experimental data is large due to various reasons such as uneven sample density, bubbles existing in a rubber film and a cylinder wall and the like, and the mechanical characteristics of different tailing materials in an actual tailing pond under the layering condition cannot be truly simulated.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides a layered triaxial experiment tailing sample loading device, which can layer different tailing materials and adjust a specific inclination angle on a layered surface during sample loading, enable a layered sample with the specific inclination angle to be more uniformly molded through vibration of a vibrating table during sample loading, and simultaneously add an air extractor on the side edge of the device to enable a rubber mold to be tightly attached to a sample loading cylinder, thereby reducing errors caused by manual sample loading. And a tailing material pretreatment box is added at the lower part of the feeder so as to conveniently finish the task of loading required samples under different experiments.
The technical scheme adopted by the invention is as follows: a stratified triaxial experiment tailing material sample loading device comprises a feeding device, a vacuum air exhaust device, a sample loading cylinder, a sample layering device, a vibration sample loading device and an instrument control device;
the feeding device comprises a stirring fan 24, a weight display screen 23, a feeding cylinder wall 25, a feeding sample loading disc 22, a feeding sample loading disc switch 21, a feeding hopper 26, a feeding machine I1 and a feeding machine II 49;
the sample loading cylinder comprises a rotary connecting bearing column 45, a sample loading cylinder wall 31, an air suction hole groove 46, a cylinder wall fixing groove 14 and a combined fixing device;
the sample layering device comprises a telescopic arm fixing device 2, an electric telescopic arm 4, an electric angle rotating device 5, a magnetic sucker 27, a concave magnet disc 6 and a disc soft rubber wrapping 28;
the vibration sample loading device comprises a sample loading cylinder 12, a rubber film 29, a sample loading cylinder wall 31, a thin rubber band 53, a tailing sand material I30, a layered water-soluble film 32, a cylinder vibration fixing arm I34, a cylinder vibration fixing arm II 15, a permeable stone 35, a sample loading base 16, an electric vibration device 17, a secondary vibration spring 51 and a vibration base 18;
the instrument control device comprises a device metal shell 3, an instrument main power supply 36, an instrument main switch 13, a power supply data control line 37, a device host 52, a vibration sample loading mobile table 38, a mobile guide rail 39, an instrument data display screen 19, a general control table 20 and a base pulley 40;
the feeder I1 and the feeder II 49 are respectively fixed on two sides of the top of the metal shell 3, the upper ends of the feeder I1 and the feeder II 49 are respectively provided with a feeding sample loading disc 22, a feeding sample loading disc switch 21 is respectively arranged on the left side of the feeding sample loading disc 22 and is rotatably connected with a bottom plate of the feeding sample loading disc 22, a stirring fan 24 is arranged inside the feeder I1 and the feeder II 49 and is positioned under the feeding sample loading disc 22, a weight sensor is arranged inside the feeding sample loading disc 22 and can weigh the weight of tailings on the feeding sample loading disc 22 in time, the weight sensor is connected with a weight display screen 23, the stirring fan 24 and the weight display screen 23 are both connected with a device host 52, the switches of the stirring fan are controlled by a general control console 20, and a feeding funnel 26 is respectively arranged at the bottoms of the feeder I1 and the feeder II 49;
one end of each of the two semicircular sample-loading cylindrical walls 31 is connected and rotated by a rotary connecting bearing column 45, the other ends of the two semicircular sample-loading cylindrical walls 31 are connected together or separated by a combined fixing device, the upper part of one side edge of each sample-loading cylindrical wall 31 is provided with an air suction hole groove 46, the air suction hole groove 46 is connected with a vacuum air suction device during air suction, and the outer walls of the two sides of each sample-loading cylindrical wall 31 are provided with two sets of cylindrical wall fixing grooves 14;
the telescopic arm fixing device 2 is fixed at the lower end of a top plate of a metal shell 3 of the device, an electric telescopic arm 4 is connected below the telescopic arm fixing device 2, an electric angle rotating device 5 is connected below the electric telescopic arm 4, the electric telescopic arm 4 and the electric angle rotating device 5 are both connected with a device host 52 and are controlled by a general control console 20, a magnetic sucker 27 is installed at the periphery of the electric angle rotating device 5, the magnetic sucker 27 can fix concave magnet discs 6 of different models through the magnetism of the magnetic sucker 27, corresponding disc soft rubber covered edges 28 are sleeved on the periphery of the concave magnet discs 6, and layered water-soluble films 32 are arranged at the bottoms of the disc soft rubber covered edges 28;
an electric vibration device 17 and a secondary vibration spring 51 are arranged above the vibration base 18, the power supply of the electric vibration device 17 is connected with a device host 52, a switch of the electric vibration device is arranged on a general control console 20, the upper parts of the electric vibration device 17 and the secondary vibration spring 51 are connected with a sample loading base 16, a sample loading cylinder 12 is arranged above the sample loading base 16, a permeable stone 35 is arranged at the bottom end inside the sample loading cylinder 12, the inner wall of the sample loading cylinder 12 is sleeved with a rubber film 29, the lower parts of a cylinder vibration fixing arm I34 and a cylinder vibration fixing arm II 15 are respectively arranged at two sides of the sample loading base 16, and the upper parts of the cylinder vibration fixing arm;
the vibration base 18 is arranged at the upper end of a device main body 52, two moving guide rails 39 are arranged at the lower side of the inner wall of a device metal shell 3 and penetrate through a vibration sample loading moving table 38, a base pulley 40 is arranged at the bottom of the vibration sample loading moving table 38, the device main body 52 and a general console 20 are arranged at the upper part of the vibration sample loading moving table 38, an instrument main power supply 36 is arranged on the side surface of the device metal shell 3 and is connected with the device main body 52 through a power supply data control line 37, and the device main body 52 is connected with the general console 20.
Specifically, the vacuum air extractor comprises a sample loading cylinder air extracting plug 7, an air extracting needle tube 8, a parallel moving arm 9, an electric air extracting piston 10, an electric air extracting piston slide rail 11 and an air extracting piston rubber pad 50; an upper electric air-extracting piston slide rail 11 and a lower electric air-extracting piston slide rail 11 are fixed on a metal shell 3 of the device, parallel moving arms 9 are arranged on two sides of the electric air-extracting piston 10, one end of each parallel moving arm 9 is connected with the electric air-extracting piston 10, the other end of each parallel moving arm is fixed on an air-extracting needle tube 8, an air-extracting piston rubber pad 50 is attached to the outer surface of the electric air-extracting piston 10, the electric air-extracting piston 10 is connected with a device host 52, a working switch of the electric air-extracting piston is controlled by a general control console 20, the left side.
Specifically, the inner diameter of the loading cylinder 12 is equal to the diameter of the permeable stone 35, and the outer diameter of the loading cylinder 12 is equal to the diameter of the loading base 16.
Preferably, vaseline is applied around the disc soft rubber rim 28.
Preferably, the cylinder vibration fixing arm I34, the cylinder vibration fixing arm II 15 and the cylinder wall fixing groove 14 are opened and locked through a fixing lock switch 33.
Specifically, the combined fixing device comprises a bolt fixing groove I42 and a bolt fixing groove II 44 which are arranged at the end part of one semicircular sample-loading cylindrical wall 31, and a fixing plate I47 and a fixing plate II 48 which are arranged at the end part of the other semicircular sample-loading cylindrical wall 31, wherein a fixing bolt I41 sequentially penetrates through bolt holes in the bolt fixing groove I42 and the fixing plate I47 to connect the bolt fixing groove I42 and the fixing plate I47, and a fixing bolt II 43 sequentially penetrates through bolt holes in the bolt fixing groove II 44 and the fixing plate II 48 to connect the bolt fixing groove I44 and the fixing.
Specifically, when the layering inclination angle is 60 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber wrapping 28 is in an oval shape with the minor axis and the major axis being 1: 2; when the layering inclination angle is 45 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber wrapping 28 is an ellipse with the minor axis and the major axis being 1: 1.41; when the layering inclination angle is 30 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber covered edge 28 is in an oval shape with the minor axis and the major axis being 1: 1.15.
Preferably, both ends of the stirring shaft of the stirring fan 24 are fixed on the inner walls of the feeding cylinder walls 25 of the feeder I1 and the feeder II 49.
The beneficial results of the invention are:
(1) the device can be used for carrying out layered sample loading on different tailing materials;
(2) the inclination angle of the layered slope surface of the device can be adjusted when different tailing materials are layered and sampled;
(3) the vacuum air extractor is added in the device, so that the rubber mold is tightly attached to the sample loading cylinder, and the error caused by manual sample loading is reduced;
(4) when the device is used for loading samples, the loaded samples are easier to be uniformly molded through vibration of the vibration table;
(5) this device can directly weigh the sample quality on reinforced dress appearance dish to add tailing material preliminary treatment box in the lower part, conveniently accomplish the dress appearance task under the different experimental conditions.
(6) The device can realize multiple purposes, can meet sample loading requirements under different experimental conditions, effectively improves sample loading efficiency and reduces experimental errors.
Drawings
FIG. 1 is a schematic view of the finishing structure of the present invention;
FIG. 2 is a schematic view of the sample loading cylinder structure of the present invention;
FIG. 3 is a schematic view of the charging device according to the present invention;
FIG. 4 is a schematic view of the vacuum pumping device of the present invention
FIG. 5 is a schematic view of the construction of a sample layering device according to the present invention;
FIG. 6 is a diagram of the multi-layer boundary of the sample and the shape of the corresponding layering device when the inclination angles of the layering slope are 60, 45 and 30 degrees, respectively.
The reference numbers in the figures are: 1-charger I, 2-telescopic arm fixing device, 3-device metal shell, 4-electric telescopic arm, 5-electric angle rotating device, 6-concave magnet disc, 7-sample-loading cylinder air-pumping plug, 8-air-pumping needle tube, 9-parallel moving arm, 10-electric air-pumping piston, 11-electric air-pumping piston slide rail, 12-sample-loading cylinder, 13-instrument main switch, 14-cylinder wall fixing groove, 15-cylinder vibration fixing arm II, 16-sample-loading base, 17-electric vibration device, 18-vibration base, 19-instrument data display screen, 20-main table, 21-charging sample-loading disc switch, 22-charging sample-loading disc, 23-weight display screen, 24-stirring fan, 25-charging cylinder wall, 26-a feeding funnel, 27-a magnetic sucker, 28-a disc soft rubber edge cover, 29-a rubber film, 30-a tailing material I, 31-a sample-loading cylinder wall, 32-a layered water-soluble film, 33-a fixed lock switch, 34-a cylinder vibration fixing arm I, 35-a permeable stone, 36-an instrument main power supply, 37-a power supply data control line, 38-a vibration sample-loading moving table, 39-a moving guide rail, 40-a base pulley, 41-a fixing bolt I, 42-a bolt fixing groove I, 43-a fixing bolt II, 44-a bolt fixing groove II, 45-a rotary connecting bearing column, 46-an air suction hole groove, 47-a fixing plate I, 48-a fixing plate II, 49-a feeder II, 50-an air suction piston rubber pad and 51-times of vibration springs, 52-device host computer, 53-thin rubber band.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1: as shown in fig. 1-6, a layered triaxial experimental tailing sample loading device comprises a feeding device, a vacuum pumping device, a sample loading cylinder, a sample layering device, a vibration sample loading device and an instrument control device;
the feeding device comprises a stirring fan 24, a weight display screen 23, a feeding cylinder wall 25, a feeding sample loading disc 22, a feeding sample loading disc switch 21, a feeding hopper 26, a feeding machine I1 and a feeding machine II 49;
the sample loading cylinder comprises a rotary connecting bearing column 45, a sample loading cylinder wall 31, an air suction hole groove 46, a cylinder wall fixing groove 14 and a combined fixing device;
the sample layering device comprises a telescopic arm fixing device 2, an electric telescopic arm 4, an electric angle rotating device 5, a magnetic sucker 27, a concave magnet disc 6 and a disc soft rubber wrapping 28;
the vibration sample loading device comprises a sample loading cylinder 12, a rubber film 29, a sample loading cylinder wall 31, a thin rubber band 53, a tailing sand material I30, a layered water-soluble film 32, a cylinder vibration fixing arm I34, a cylinder vibration fixing arm II 15, a permeable stone 35, a sample loading base 16, an electric vibration device 17, a secondary vibration spring 51 and a vibration base 18;
the instrument control device comprises a device metal shell 3, an instrument main power supply 36, an instrument main switch 13, a power supply data control line 37, a device host 52, a vibration sample loading mobile table 38, a mobile guide rail 39, an instrument data display screen 19, a general control table 20 and a base pulley 40;
the feeder I1 and the feeder II 49 are respectively fixed on two sides of the top of the metal shell 3 of the device, the upper ends of the feeder I1 and the feeder II 49 are respectively provided with a feeding sample loading disc 22, a feeding sample loading disc switch 21 is respectively arranged on the left side of the feeding sample loading disc 22 and is rotationally connected with the bottom plate of the feeding sample loading disc 22, when the feeding sample loading disc switch 21 is opened, the feeding sample loading disc 22 rotates at a certain inclination angle and completely pours tailing materials on the feeding sample loading disc 22 into the feeding cylinder wall 25, a stirring fan 24 is arranged inside the feeder I1 and the feeder II 49 and is positioned under the feeding sample loading disc 22, the stirring fan 24 fully stirs partial caking tailing materials required by the experiment, the tailing materials flow into the tailing material feeding cylinder wall 25 after being stirred by the stirring fan 24, a weight sensor is arranged inside the feeding sample loading disc 22 and can timely weigh the tailing materials on the feeding sample loading disc 22, the weight sensor is connected with the weight display screen 23, the weight display screen 23 can in time show the tailing material weight in reinforced dress appearance dish 22, places certain quality tailing material on reinforced dress appearance dish 22 that has the function of weighing, through observing concrete numerical value on the weight display screen 23 to the tailing material quality in the reinforced dress appearance dish 22 of adjustment is in order to satisfy the requirement of different experiments. The stirring fan 24 and the weight display screen 23 are both connected with the device main machine 52, the switches of the stirring fan and the weight display screen are controlled by the general control console 20, the feeding hoppers 26 are respectively installed at the bottoms of the feeder I1 and the feeder II 49, and tailings after stirring and weighing are discharged from the lower parts of the feeding hoppers 26;
one end of each of the two semicircular sample-loading cylindrical walls 31 is connected and rotated by a rotary connecting bearing column 45, the other ends of the two semicircular sample-loading cylindrical walls 31 are connected together or separated by a combined fixing device, the upper part of one side edge of each sample-loading cylindrical wall 31 is provided with an air suction hole groove 46, the air suction hole groove 46 is connected with a vacuum air suction device during air suction, and the outer walls of the two sides of each sample-loading cylindrical wall 31 are provided with two sets of cylindrical wall fixing grooves 14;
the telescopic arm fixing device 2 is fixed at the lower end of a top plate of a metal shell 3 of the device, an electric telescopic arm 4 is connected below the telescopic arm fixing device 2, the electric telescopic arm 4 can adjust the upper position and the lower position of a layering device, an electric angle rotating device 5 is connected below the electric telescopic arm 4, the electric telescopic arm 4 and the electric angle rotating device 5 are both connected with a device host 52 and are controlled by a general control console 20, a magnetic chuck 27 is installed at the periphery of the electric angle rotating device 5, the magnetic chuck 27 can fix concave magnet discs 6 of different models through the magnetism of the magnetic chuck 27, corresponding disc soft rubber covered edges 28 are sleeved on the periphery of the concave magnet discs 6, and the bottom of the disc soft rubber covered edges 28 is provided with a layered;
according to the layering inclination angle required by the experiment, the concave magnet disc 6 and the disc soft rubber wrapping 28 in a specific shape are selected, after combination, the concave magnet disc 6 and the disc soft rubber wrapping 28 are attracted to the magnetic suction disc 27 through the magnetic force of the magnetic suction disc 27, vaseline is coated on the surface of the disc soft rubber wrapping 28 to reduce the friction force between the rubber film 29 and a sample layering device, and the layered water-soluble film 32 is adhered to the lower surface of the disc soft rubber wrapping 28, so that two kinds of tailing materials are not mixed with each other during vibration, and the experiment data are more accurate. And then the electric telescopic arm 4 and the electric angle rotating device 5 in the sample layering device are adjusted through the general control console 20, and the electric telescopic arm 4 slowly moves downwards to complete layering.
Before the disk soft rubber edge cover 28 in the layering device moves downwards, a layered water-soluble film 32 is bonded at the bottom of the disk soft rubber edge cover, and after layering work is finished, the layered water-soluble film 32 is bonded at the upper part of the tailing I30.
The vibration base 18 is arranged at the upper end of a device main body 52, two moving guide rails 39 are arranged at the lower side of the inner wall of a device metal shell 3 and penetrate through a vibration sample loading moving table 38, a base pulley 40 is arranged at the bottom of the vibration sample loading moving table 38, the device main body 52 and a general console 20 are arranged at the upper part of the vibration sample loading moving table 38, an instrument main power supply 36 is arranged on the side surface of the device metal shell 3 and is connected with the device main body 52 through a power supply data control line 37, and the device main body 52 is connected with the general console 20.
The switches of the stirring fan 24 and the weight display screen 23, the switches of the electric air-extracting piston 10, the sample layering device and the electric vibration device 17 are controlled by the general control console 20. Before loading the second layer of tailing materials, the general control console 20 is controlled, and the vibration sample loading moving platform 38 is moved left and right to enable the lower part of the feeding funnel 26 corresponding to the tailing materials to be added to be aligned with the middle of the sample loading cylinder.
Furthermore, two upper and lower electric air-extracting piston slide rails 11 in the vacuum air-extracting device are fixed on the metal shell 3 of the device, parallel moving arms 9 are arranged at two sides of the electric air-extracting piston 10, one end of each parallel moving arm 9 is connected with the electric air-extracting piston 10, and the other end of each parallel moving arm is fixed on an air-extracting needle tube 8, so that the air-extracting device can move along with the movement of the sample. The outer surface of the electric air-extracting piston 10 is attached with an air-extracting piston rubber pad 50 to ensure the air tightness of the air-extracting device, and in addition, the electric air-extracting piston 10 is connected with a device main machine 52, and the working switch of the electric air-extracting piston is controlled by a general control console 20. The left side of the sample loading cylinder air suction plug 7 is connected with an air suction needle tube 8, and the right side is connected with an air suction hole groove 46.
In actual operation, the general control console 20 is operated to open the switch of the electric air-extracting piston 10, and the sample cylinder air-extracting plug 7 is aligned with the air-extracting hole groove 46 to ensure the air tightness of the vacuum air-extracting device, ensure no air bubble between the rubber film 29 and the sample cylinder wall 31 and ensure the accuracy of experimental data.
The switch of the electric vibration device 17 is opened through the general control console 20, so that the sample layering device can be extruded to a layering interface of the sample layering device and a set inclination angle is reached, and each layer of tailing materials can be more uniform. The layered water-soluble film 32 is attached to the lower surface of the disc soft rubber covered edge 28, is adhered to the upper surface of the tailing material I30 after layering, and is fully dissolved when the water-soluble film is saturated by a triaxial test water head, so that the experimental data cannot be influenced, two tailing materials are not doped with each other during vibration, and the experimental data are more accurate. The electric telescopic arm 4 and the electric angle rotating device 5 in the sample layering device are adjusted through the general control console 20, and the electric telescopic arm 4 slowly moves downwards to complete layering.
Further, the inner diameter of the loading cylinder 12 is equal to the diameter of the permeable stone 35, and the outer diameter of the loading cylinder 12 is equal to the diameter of the loading base 16.
Further, vaseline is coated around the disc soft rubber edge 28.
Furthermore, the cylinder vibration fixing arm I34, the cylinder vibration fixing arm II 15 and the cylinder wall fixing groove 14 are opened and locked through a fixing lock switch 33.
Further, the combined fixing device comprises a bolt fixing groove I42 and a bolt fixing groove II 44 which are installed at the end part of one semicircular sample loading cylinder wall 31, a fixing plate I47 and a fixing plate II 48 which are installed at the end part of the other semicircular sample loading cylinder wall 31, when the sample loading cylinder 12 needs to be closed for sample loading, a fixing bolt I41 is rotated manually and penetrates through the bolt holes in the bolt fixing groove I42 and the bolt holes in the fixing plate I47 in sequence and then is connected together, and a bolt fixing groove II 44 is rotated manually and penetrates through the bolt holes in the bolt fixing groove II 44 and the bolt holes in the fixing plate II 48 in sequence and then is connected together.
Before sample loading, the cylinder vibration fixing arm I34 and the cylinder vibration fixing arm II 15 are respectively buckled in the corresponding cylinder wall fixing grooves 14, and the fixing lock switch 33 is tightly closed to ensure that the fixing position of the sample loading cylinder wall 31 is not moved during vibration.
Further, when the layering inclination angle is 60 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber wrapping 28 is in an oval shape with the minor axis and the major axis being 1: 2; when the layering inclination angle is 45 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber wrapping 28 is an ellipse with the minor axis and the major axis being 1: 1.41; when the layering inclination angle is 30 degrees, the layering device consisting of the concave magnet disc 6 and the disc soft rubber covered edge 28 is in an oval shape with the minor axis and the major axis being 1: 1.15.
Furthermore, two ends of a stirring shaft of the stirring fan 24 are fixed on the inner walls of the feeding cylinder walls 25 of the feeder I1 and the feeder II 49.
The working principle of the stratified triaxial experiment tailing sample loading device is as follows:
a rubber film 29 with proper size and length is prepared, the sample loading base 16 is kept clean and dry, when the rubber film 29 is pulled out, the permeable stone 35 is placed in the middle of the sample loading base 16, the lower edge part of the rubber film 29 is placed on the sample loading base 16, and then the rubber film 29 is pulled out of the sample loading cylinder 12. Then, the fixing plate on the sample loading cylinder 12 is connected and fixed with the fixing bolt, and the whole sample loading cylinder 12 is placed on the sample loading base 16.
And opening an instrument main switch 13, operating a main control console 20 to open a switch of the electric air-extracting piston 10, and aligning the sample loading cylinder air-extracting plug 7 with the air-extracting hole groove 46 to ensure the air tightness of the vacuum air-extracting device, ensure that no air bubble exists between the rubber film 29 and the sample loading cylinder wall 31, and ensure the accuracy of experimental data.
The cylinder vibration fixing arm I34 and the cylinder vibration fixing arm II 15 are respectively buckled in the corresponding cylinder wall fixing grooves 14, and the fixing lock switch 33 is tightly closed to ensure that the fixing position of the sample cylinder wall 31 is not moved during vibration.
According to the layering inclination angle required by the experiment, the concave magnet disc 6 and the disc soft rubber wrapping 28 in a specific shape are selected, after combination, the concave magnet disc 6 and the disc soft rubber wrapping 28 are attracted to the magnetic suction disc 27 through the magnetic force of the magnetic suction disc 27, vaseline is coated on the surface of the disc soft rubber wrapping 28 to reduce the friction force between the rubber film 29 and a sample layering device, and the layered water-soluble film 32 is adhered to the lower surface of the disc soft rubber wrapping 28, so that two kinds of tailing materials are not mixed with each other during vibration, and the experiment data are more accurate.
The electric angle rotating device 5 is adjusted to a preset angle through the general control console 20, so that layered compaction at a specific inclination angle is facilitated.
The tailing materials with certain mass are placed on a feeding sample loading disc 22 with a weighing function, and the mass of the tailing materials in the feeding sample loading disc 22 is adjusted by observing the specific numerical value on a weight display screen 23 so as to meet the requirements of different experiments.
By adjusting the general control console 20, the vibrating sample loading moving platform 38 is moved left and right to align the lower portion of the hopper 26 corresponding to the tailings to be added with the sample loading cylinder 12.
And operating the general control console 20 to turn on the tailing stirring fan 24 and turn on the corresponding feeding and sample loading plate switch 21, so that part of the tailing required by the experiment is fully stirred. The tailing materials flow into the tailing material feeding cylinder wall 25 after being stirred by the stirring fan 24, and all the tailing materials are discharged into the sample loading cylinder 12 through the feeding hopper 26.
Meanwhile, the switch of the electric vibration device 17 is turned on through the general control console 20, so that the sample layering device can be extruded to a layering interface of the sample layering device and reach a set inclination angle, and each layer of tailing materials can be more uniform. The layered water-soluble film 32 is attached to the lower surface of the disc soft rubber covered edge 28, is adhered to the upper surface of the tailing material I30 after layering, and is fully dissolved when the water-soluble film is saturated by a triaxial test water head, so that the experimental data cannot be influenced, two tailing materials are not doped with each other during vibration, and the experimental data are more accurate.
The electric telescopic arm 4 and the electric angle rotating device 5 in the sample layering device are adjusted through the general control console 20, and the electric telescopic arm 4 slowly moves downwards to complete layering.
After the first layer of tailing materials are charged, the electric telescopic arm 4 is controlled by the general control console 20 to enable the sample layering device to move up slowly. Before loading the second layer of tailing materials, the vibration sample loading moving platform 38 is moved left and right through the general control platform 20, so that the lower part of the feeding funnel 26 corresponding to the tailing materials to be added is aligned with the middle of the sample loading cylinder 12.
And repeating the step of loading the tailing materials on the first layer to finish the sample loading on the second layer.
If the experiment requires that the sample need divide into three-layer, should clear up the feeder that used twice before earlier and carry out reinforced dress appearance again, avoid the residual tailing material to cause the error to the experiment.
After the sample loading is finished, the switch of the electric vibration device 17 is immediately closed through the general control console 20, the fixed lock switch 33 fixed on the cylinder wall fixing groove 14 is opened, the electric air suction piston 10 stops working, the instrument general switch 13 is closed, the sample loading cylinder air suction plug 7 and the air suction hole groove 46 are slowly separated, finally, the permeable stone 35 is slowly moved to the movable triaxial experimental instrument, the fixing bolt and the fixing plate are slowly turned off, the sample loading cylinder 12 is taken down, and all sample loading work is finished.
The sample loading device can effectively avoid test errors caused by manual sample loading when dynamic triaxial tests are used for analyzing the dynamic characteristics of the tailing pond, can simulate different tailing materials to be layered and can be adjusted to a slope with a specific inclination angle, can perform corresponding pretreatment on the tailing materials according to the test requirements, and enables the loaded samples to be more uniformly molded through vibration of the vibrating table during sample loading. The accuracy of the test is improved, and the working efficiency is improved.
The device integrates weighing, layering, uniform vibration and rubber film vacuumizing of tailing material sample loading, and supports different inclination angles of the layered slope surface. The error of artifical dress appearance produced has effectively been avoided, the dress appearance efficiency of tailing material when having improved the triaxial test to can accomplish the triaxial experiment that corresponds to different experimental requirements of different operating modes.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a triaxial experiment tailing material dress appearance device that can stratify which characterized in that: comprises a feeding device, a vacuum air exhaust device, a sample loading cylinder, a sample layering device, a vibration sample loading device and an instrument control device;
the feeding device comprises a stirring fan (24), a weight display screen (23), a feeding cylinder wall (25), a feeding sample tray (22), a feeding sample tray switch (21), a feeding hopper (26), a feeding machine I (1) and a feeding machine II (49);
the sample loading cylinder comprises a rotary connecting bearing column (45), a sample loading cylinder wall (31), an air suction hole groove (46), a cylinder wall fixing groove (14) and a combined fixing device;
the sample layering device comprises a telescopic arm fixing device (2), an electric telescopic arm (4), an electric angle rotating device (5), a magnetic sucker (27), a concave magnet disc (6) and a disc soft rubber wrapping (28);
the vibration sample loading device comprises a sample loading cylinder (12), a rubber film (29), a sample loading cylinder wall (31), a thin rubber band (53), a tailing material I (30), a layered water-soluble film (32), a cylinder vibration fixing arm I (34), a cylinder vibration fixing arm II (15), a permeable stone (35), a sample loading base (16), an electric vibration device (17), a secondary vibration spring (51) and a vibration base (18);
the instrument control device comprises a device metal shell (3), an instrument main power supply (36), an instrument main switch (13), a power supply data control line (37), a device host (52), a vibration sample loading mobile platform (38), a mobile guide rail (39), an instrument data display screen (19), a main control platform (20) and a base pulley (40);
the feeder I (1) and the feeder II (49) are respectively fixed on two sides of the top of the metal shell (3) of the device, the upper ends of the feeder I (1) and the feeder II (49) are respectively provided with a feeding sample loading disc (22), a feeding sample loading disc switch (21) is respectively arranged on the left side of the feeding sample loading disc (22) and is rotationally connected with a bottom plate of the feeding sample loading disc (22), a stirring fan (24) is arranged inside the feeder I (1) and the feeder II (49) and is positioned under the feeding sample loading disc (22), a weight sensor is arranged inside the feeding sample loading disc (22) and can weigh the weight of tailings on the feeding sample loading disc (22) in time, the weight sensor is connected with a weight display screen (23), the stirring fan (24) and the weight display screen (23) are both connected with a device host (52), the switch is controlled by a general control console (20), and the charging hopper (26) is respectively arranged at the bottom of the charging machine I (1) and the charging machine II (49);
one end of each of the two semicircular sample-loading cylindrical walls (31) is connected and rotated through a rotary connecting bearing column (45), the other ends of the two semicircular sample-loading cylindrical walls (31) are connected together or separated through a combined fixing device, the upper part of one side edge of each sample-loading cylindrical wall (31) is provided with an air suction hole groove (46), the air suction hole groove (46) is connected with a vacuum air suction device during air suction, and the outer walls of the two sides of each sample-loading cylindrical wall (31) are provided with two sets of cylindrical wall fixing grooves (14);
the telescopic arm fixing device (2) is fixed at the lower end of a top plate of a metal shell (3), an electric telescopic arm (4) is connected below the telescopic arm fixing device (2), an electric angle rotating device (5) is connected below the electric telescopic arm (4), the electric telescopic arm (4) and the electric angle rotating device (5) are both connected with a device host (52) and are controlled by a general control console (20), a magnetic chuck (27) is installed on the periphery of the electric angle rotating device (5), the magnetic chuck (27) can fix concave magnet disks (6) of different models through the magnetism of the magnetic chuck, corresponding disk soft rubber covered edges (28) are sleeved on the periphery of the concave magnet disks (6), and layered water-soluble films (32) are arranged at the bottom of the disk soft rubber covered edges (28);
an electric vibration device (17) and a secondary vibration spring (51) are arranged above a vibration base (18), a power supply of the electric vibration device (17) is connected with a device host (52), a switch of the electric vibration device is arranged on a general control console (20), the upper parts of the electric vibration device (17) and the secondary vibration spring (51) are connected with a sample loading base (16), a sample loading cylinder (12) is arranged above the sample loading base (16), a permeable stone (35) is arranged at the bottom end inside the sample loading cylinder (12), a rubber thin film (29) is sleeved on the inner wall of the sample loading cylinder (12), the lower parts of a cylinder vibration fixing arm I (34) and a cylinder vibration fixing arm II (15) are respectively arranged at two sides of the sample loading base (16), and the upper parts of the cylinder vibration fixing arm I and the cylinder vibration;
the vibration base (18) is installed at the upper end of a device host (52), two moving guide rails (39) are installed at the lower side of the inner wall of a device metal shell (3) and penetrate through a vibration sample loading moving table (38), a base pulley (40) is installed at the bottom of the vibration sample loading moving table (38), the device host (52) and a general control table (20) are installed at the upper part of the vibration sample loading moving table (38), an instrument main power supply (36) is installed on the side surface of the device metal shell (3) and is connected with the device host (52) through a power supply data control line (37), and the device host (52) is connected with the general control table (20).
2. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: the vacuum air extractor comprises a sample cylinder air extracting plug (7), an air extracting needle tube (8), a parallel moving arm (9), an electric air extracting piston (10), an electric air extracting piston slide rail (11) and an air extracting piston rubber pad (50); two upper and lower electronic bleed piston slide rails (11) are fixed on device metal casing (3), parallel moving arm (9) are installed to electronic bleed piston (10) both sides, parallel moving arm (9) one end is connected electronic bleed piston (10), another end is fixed on bleed needle tubing (8), electronic bleed piston (10) surface adheres to one deck bleed piston rubber pad (50), electronic bleed piston (10) are connected with device host computer (52), its operating switch is controlled by master console (20), dress appearance section of thick bamboo bleed stopper (7) left side is connected bleed needle tubing (8), air exhaust hole groove (46) are connected to the right side.
3. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: the inner diameter of the sample loading cylinder (12) is equal to the diameter of the permeable stone (35), and the outer diameter of the sample loading cylinder (12) is equal to the diameter of the sample loading base (16).
4. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: vaseline is coated around the disk soft rubber edge covering (28).
5. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: the cylinder vibration fixing arm I (34), the cylinder vibration fixing arm II (15) and the cylinder wall fixing groove (14) are opened and locked through a fixing lock switch (33).
6. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: the combined fixing device comprises a bolt fixing groove I (42) arranged at the end part of one semicircular sample-loading cylinder wall (31), a bolt fixing groove II (44), a fixing plate I (47) arranged at the end part of the other semicircular sample-loading cylinder wall (31), and a fixing plate II (48), wherein the fixing bolt I (41) sequentially penetrates through the bolt fixing groove I (42), the bolt hole on the fixing plate I (47) is connected with the bolt fixing groove II (44), and the bolt hole on the fixing plate II (48) is connected with the bolt fixing groove II (43).
7. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: when the layering inclination angle is 60 degrees, the layering device consisting of the concave magnet disc (6) and the disc soft rubber wrapping edge (28) is in an oval shape with the minor axis and the major axis being 1: 2; when the layering inclination angle is 45 degrees, the layering device consisting of the concave magnet disc (6) and the disc soft rubber wrapping edge (28) is in an ellipse shape with the minor axis and the major axis being 1: 1.41; when the layering inclination angle is 30 degrees, the layering device consisting of the concave magnet disc (6) and the disc soft rubber edge (28) is in an oval shape with the minor axis and the major axis being 1: 1.15.
8. The delaminatable triaxial experimental tailings material sample loading device of claim 1, wherein: two ends of a stirring shaft of the stirring fan (24) are fixed on the inner walls of the feeding cylinder walls (25) of the feeding machine I (1) and the feeding machine II (49).
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