CN109269940B - Tailing sand power apparent viscosity measuring device and method - Google Patents
Tailing sand power apparent viscosity measuring device and method Download PDFInfo
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- CN109269940B CN109269940B CN201811469398.8A CN201811469398A CN109269940B CN 109269940 B CN109269940 B CN 109269940B CN 201811469398 A CN201811469398 A CN 201811469398A CN 109269940 B CN109269940 B CN 109269940B
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- 239000004576 sand Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 15
- 238000005259 measurement Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The device comprises a model box, a power traction assembly, a data acquisition assembly and a water supply assembly; the data acquisition component is positioned in the model box; the power traction assembly comprises a rigid frame, a speed regulating motor, a screw, a nut, a sliding table, guide rods, traction steel wires, a plurality of traction rods and traction rod guide rails, wherein the number of the traction rods is equal to that of the traction rods, the traction rods are uniformly distributed in the model box along the height direction, and each traction rod is matched with a group of traction rod guide rails and is connected with the traction rods through one traction steel wire. The method comprises the following steps: fixedly mounting the model box on a vibrating table; the power traction assembly, the data acquisition assembly and the water supply assembly are installed in place; adopting a sand rain method to lay tailing sand, leveling the surface of each layer of tailing sand laid, and injecting water after leveling to saturate the tailing sand; after standing, starting a vibrating table to liquefy saturated tailing sand in the model box; starting the speed regulating motor to output the dragging force, so that the dragging rod moves in the liquefied tailing sand at a constant speed; and calculating the apparent viscosity.
Description
Technical Field
The invention belongs to the technical field of environmental geotechnical engineering, and particularly relates to a tailing sand power apparent viscosity measuring device and method.
Background
Along with the rapid development of the economy in China, various economic constructions and basic engineering are more and more dense and indispensible, and the ecological environment is more and more important, so that higher requirements on green exploitation, safe production and stable operation of mineral resources are required.
Taking a tailing dam as an example, the tailing dam is taken as an important component in production facilities of a concentrating mill, and the safety of the tailing dam is important. At present, at least two thousands of tailing dams exist in China, wherein a great part of the construction seismic zones are even nearby strong seismic zones, once earthquake happens, pore water pressure of tailing sand in the dams is continuously increased, effective stress and shear strength of the tailing sand are continuously reduced, so that tailing sand particles in the dams are gradually in a suspension state, original strength is lost, the under-consolidation state is converted into a liquid-like state, large-area flow damage is formed, and huge harm is caused to downstream environments of the dams and life and property safety of people.
The liquefaction characteristic of the sand is a research hot spot of soil dynamics, the total stress of the saturated sand consists of an effective stress and pore water pressure, and in general, the pore water pressure of the sand is smaller than the total stress due to the existence of the effective stress. However, under the action of dynamic loads such as earthquake and explosion, the pore water pressure in saturated sand is continuously increased, when the pore water pressure is increased to be equal to the total stress, the effective stress in the sand is equal to zero, the sand skeleton loses acting force, so that sand particles are suspended in water, at the moment, the sand becomes a substance like fluid, and the shear strength and the bearing capacity are lost, namely, the liquefaction phenomenon of saturated sand is realized. And the tailing sand is in a flowing state after liquefaction, and the liquefaction large deformation is analyzed from the hydrodynamic aspect, so that the apparent viscosity is the most basic parameter for representing the mechanical property of the fluid, and the apparent viscosity is based on Newton's internal friction law and represents the simple shear flow of the fluid through the relation between the shear stress and the shear strain rate.
Currently, the apparent viscosity measurement of a typical fluid generally employs a capillary viscometer, a rotational viscometer, and a falling sphere viscometer. The measuring principle of the capillary viscosimeter is as follows: the fluid slowly flows through a calibrated glass capillary radiometer under the action of gravity, and the viscosity of the fluid is reflected by measuring the time of the fluid flowing through the viscometer. The measurement principle of the rotational viscometer is as follows: the fluid is made to produce shearing flow between the slits, and the apparent viscosity of the fluid is calculated by measuring the torque in the flowing process. The measuring principle of the falling ball viscometer is as follows: and (3) placing a rigid ball into a transparent measuring cylinder filled with fluid, dropping the rigid ball by gravity, and measuring the speed of the rigid ball when the rigid ball passes through the fluid at a uniform speed to calculate the apparent viscosity of the fluid.
The three apparent viscosity measurement modes are all dynamic apparent viscosity devices for measuring pure fluid, and the apparent viscosity of the liquefied sand cannot be measured.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a tailing sand dynamic apparent viscosity measuring device and method, which effectively overcome the application limitation of apparent viscosity measurement in pure fluid mechanics, can meet the measurement of the apparent viscosity of the liquefied sand, and can realize simultaneous measurement of the apparent viscosity of the liquefied sand with different depths.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the tailing sand power apparent viscosity measuring device comprises a model box, a power traction assembly, a data acquisition assembly and a water supply assembly; the model box is fixedly arranged on the vibrating table; the power traction assembly comprises a rigid frame, a speed regulating motor, a screw rod, a nut, a sliding table, a guide rod, a traction rod, traction steel wires, a traction rod and a traction rod guide rail; the rigid frame is fixedly connected with the ground; the speed regulating motor is fixedly arranged on the rigid frame through a motor bracket; the screw rod is horizontally arranged at the top of the rigid frame through a bearing seat, and one end of the screw rod is fixedly connected with a motor shaft of the speed regulating motor through a coupler; the nut is sleeved on the screw rod; the guide rod is fixedly arranged on the rigid frame and is parallel to the lead screw; the lower end of the sliding table is connected to the guide rod, and the sliding table has linear movement freedom degree on the guide rod; the upper end of the sliding table is fixedly connected with the nut; the traction rod is vertically and fixedly arranged at the lower end of the sliding table; the towing bar guide rail is arranged on the inner surface of the model box and is parallel to the lead screw; the two ends of the rod body of the hauling rod are in ball structures, the end ball heads of the hauling rod are positioned in the hauling rod guide rail, the hauling rod is perpendicular to the hauling rod guide rail, and the end ball heads of the hauling rod have linear movement freedom degree in the hauling rod guide rail; one end of the traction steel wire is fixedly connected to the middle part of the traction rod, and the other end of the traction steel wire is fixedly connected to the traction rod; the data acquisition component is positioned in the model box; the water supply assembly is located outside the mold box.
The data acquisition component comprises a tension sensor, a displacement sensor, a pore pressure sensor and a soil pressure sensor; the tension sensor is arranged on the traction steel wire; the displacement sensor, the pore pressure sensor and the soil pressure sensor are arranged on the inner surface of the model box.
The water supply assembly comprises a water tank, a tap and a water injection pipe; the water tank is fixed above the ground, and the water tap is arranged at the bottom of the water tank; the bottom end pipe orifice of the water injection pipe is communicated with the bottom of the model box, the water injection pipe is vertically arranged, the water injection pipe is made of transparent materials, a graduated scale is arranged on the surface of the water injection pipe, and the liquid level is marked through the graduated scale; the top end of the water injection pipe is funnel-shaped.
The number of the hauling bars is several, the hauling bars are uniformly distributed in the model box along the height direction, each hauling bar is matched with a group of hauling bar guide rails, and each hauling bar is connected with the hauling bar through a traction steel wire.
The model box is a rectangular box body and adopts a detachable structure, the model box consists of a bottom plate, a front side plate, a rear side plate, a left side plate and a right side plate, the bottom plate is fixedly connected with the vibrating table, the front side plate, the rear side plate, the left side plate, the right side plate and the bottom plate are connected through slots, and the front side plate adopts a transparent plate; the joints among the bottom plate, the front side plate, the rear side plate, the left side plate and the right side plate are sealed by sealant; and inner liners are additionally arranged on the inner surfaces of the left side plate and the right side plate and are used for reducing boundary effects.
The hollow rod structure is adopted by the towing rod, the hollow ball head structure is adopted by the end ball head of the towing rod, the arc-shaped cross section of the towing rod guide rail is adopted, the point contact form is adopted between the end ball head of the towing rod and the towing rod guide rail, and the detachable structure is adopted between the towing rod guide rail and the model box.
The tailing sand power apparent viscosity measuring method adopts the tailing sand power apparent viscosity measuring device and comprises the following steps:
step one: fixedly mounting the assembled model box on a vibrating table;
step two: respectively installing a power traction assembly, a data acquisition assembly and a water supply assembly in place;
step three: paving tailing sand in the model box by adopting a sand rain method, leveling the surface of a sand layer every paving a layer of tailing sand, and then injecting water into the model box until the water surface in the model box exceeds the surface of the sand layer by at least 5cm, so as to ensure that the tailing sand is in a saturated state;
step four: after the tailing sand in the model box is completely paved, standing for 24 hours;
step five: starting a vibrating table to liquefy saturated tailing sand in the model box;
step six: starting a speed regulating motor, outputting a dragging force, and enabling the dragging rod to move in the liquefied tailing sand at a constant speed;
step seven: by the formula η=2 (F-e d DL)/3 vL, wherein eta is apparent viscosity, F is towing force, e d The soil pressure is D, the diameter of the hauling rod is D, L is the length of the hauling rod, and v is the moving speed of the hauling rod.
The invention has the beneficial effects that:
the tailing sand dynamic apparent viscosity measuring device and method provided by the invention effectively overcome the application limitation of apparent viscosity measurement in pure fluid mechanics, can meet the measurement of apparent viscosity of liquefied sand, and can realize simultaneous measurement of apparent viscosity of liquefied sand with different depths.
Drawings
FIG. 1 is a front view of a tailings dynamic apparent viscosity measuring apparatus of the present invention;
FIG. 2 is a top view of a tailings dynamic apparent viscosity measurement apparatus of the present invention;
in the figure, a model box 1, a rigid frame 2, a speed regulating motor 3, a lead screw 4, a screw 5, a sliding table 6, a guide rod 7, a traction rod 8, a traction steel wire 9, a traction rod 10, a traction rod 11, a traction rod guide rail 12, a motor bracket 13, a bearing seat 14, a tension sensor 15, a displacement sensor 16, a pore pressure sensor 17, a soil pressure sensor 18, a water tank 19, a water tap 20, a water injection pipe 21 and a coupling.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1 and 2, the tailing sand power apparent viscosity measuring device comprises a model box 1, a power traction assembly, a data acquisition assembly and a water supply assembly; the model box 1 is fixedly arranged on the vibrating table; the power traction assembly comprises a rigid frame 2, a speed regulating motor 3, a screw 4, a screw nut 5, a sliding table 6, a guide rod 7, a traction rod 8, a traction steel wire 9, a traction rod 10 and a traction rod guide rail 11; the rigid frame 2 is fixedly connected with the ground; the speed regulating motor 3 is fixedly arranged on the rigid frame 2 through a motor bracket 12; the screw rod 4 is horizontally arranged at the top of the rigid frame 2 through a bearing seat 13, and one end of the screw rod 4 is fixedly connected with a motor shaft of the speed regulating motor 3 through a coupler 21; the screw nut 5 is sleeved on the screw rod 4; the guide rod 7 is fixedly arranged on the rigid frame 2, and the guide rod 7 is parallel to the lead screw 4; the lower end of the sliding table 6 is connected to the guide rod 7, and the sliding table 6 has linear movement freedom degree on the guide rod 7; the upper end of the sliding table 6 is fixedly connected with the nut 5; the traction rod 8 is vertically and fixedly arranged at the lower end of the sliding table 6; the drag lever guide rail 11 is arranged on the inner surface of the model box 1, and the drag lever guide rail 11 is parallel to the lead screw 4; the two ends of the rod body of the hauling rod 10 are in ball structures, end ball heads of the hauling rod 10 are positioned in the hauling rod guide rail 11, the hauling rod 10 is perpendicular to the hauling rod guide rail 11, and the end ball heads of the hauling rod 10 have linear movement freedom in the hauling rod guide rail 11; one end of the traction steel wire 9 is fixedly connected to the middle part of the traction rod 10, and the other end of the traction steel wire 9 is fixedly connected to the traction rod 8; the data acquisition component is positioned inside the model box 1; the water supply assembly is located outside the mould box 1.
The data acquisition component comprises a tension sensor 14, a displacement sensor 15, a pore pressure sensor 16 and a soil pressure sensor 17; the tension sensor 14 is arranged on the traction steel wire 9; the displacement sensor 15, the pore pressure sensor 16 and the soil pressure sensor 17 are installed on the inner surface of the model box 1.
The water supply assembly comprises a water tank 18, a faucet 19 and a water injection pipe 20; the water tank 18 is fixed above the ground, and the faucet 19 is arranged at the bottom of the water tank 18; the bottom end pipe orifice of the water injection pipe 20 is communicated with the bottom of the model box 1, the water injection pipe 20 is vertically arranged, the water injection pipe 20 is made of transparent materials, a graduated scale is arranged on the surface of the water injection pipe 20, and the liquid level height is marked by the graduated scale; the top end of the water injection pipe 20 adopts a funnel shape.
The number of the hauling bars 10 is several, the hauling bars 10 are uniformly distributed in the model box 1 along the height direction, each hauling bar 10 is matched with a group of hauling bar guide rails 11, and each hauling bar 10 is connected with the hauling bar 8 through a traction steel wire 9.
The model box 1 is a rectangular box body and adopts a detachable structure, the model box 1 consists of a bottom plate, a front side plate, a rear side plate, a left side plate and a right side plate, the bottom plate is fixedly connected with the vibrating table, the front side plate, the rear side plate, the left side plate, the right side plate and the bottom plate are connected through slots, and the front side plate adopts a transparent plate; the joints among the bottom plate, the front side plate, the rear side plate, the left side plate and the right side plate are sealed by sealant; and inner liners are additionally arranged on the inner surfaces of the left side plate and the right side plate and are used for reducing boundary effects.
The drag lever 10 adopts a hollow lever structure, the end ball head of the drag lever 10 adopts a hollow ball head structure, the section of the drag lever guide rail 11 adopts a circular arc shape, so that the end ball head of the drag lever 10 is in point contact with the drag lever guide rail 11, the friction force between the end ball head of the drag lever 10 and the drag lever guide rail 11 can be reduced to the greatest extent, and the measurement accuracy is improved; and adopt detachable structure between tow bar guide rail 11 and the model case 1, so can adjust the quantity and the position of tow bar guide rail 11 wantonly, when test condition needs the adjustment, also need not wholly change model case 1, only need adjust tow bar guide rail 11 as required can, effectively improved measuring device's suitability.
In the embodiment, the test object is fine-grained tailing sand; the vibration wave output by the vibration table is EI-Centro earthquake wave; the bottom plate, the rear side plate, the left side plate and the right side plate of the model box 1 are all Q235B steel plates, the front side plate of the model box 1 is a toughened glass plate, the sealant adopted at the joint of each plate of the model box 1 is 704 silicon rubber, the inner liners on the inner surfaces of the left side plate and the right side plate of the model box 1 are polystyrene foam, and the bottom plate of the model box 1 is fixedly connected with the vibrating table through bolts; the debugging motor 3 adopts a low-speed motor, the maximum power is 15W, and remote control speed regulation is supported; the rigid frame 2 is manufactured by welding steel materials; 3 hauling bars 10 are uniformly distributed in the height direction inside the model box 1.
The tailing sand power apparent viscosity measuring method adopts the tailing sand power apparent viscosity measuring device and comprises the following steps:
step one: fixedly mounting the assembled model box 1 on a vibrating table; in the embodiment, 3 hauling bars 10 are uniformly distributed in the model box 1 along the height direction, so that the dynamic apparent viscosity test of the tailing sand under 3 depths can be synchronously completed by one-time dragging during actual test;
step two: respectively installing a power traction assembly, a data acquisition assembly and a water supply assembly in place;
step three: adopting a sand rain method to lay tailing sand in the model box 1, leveling the surface of a sand layer every layer of tailing sand, and then injecting water into the model box 1 until the water surface in the model box 1 exceeds the surface of the sand layer by at least 5cm, so as to ensure that the tailing sand is in a saturated state; in the embodiment, 10 layers of tailing sand are paved in total;
step four: after the tailing sand in the model box 1 is completely paved, standing for 24 hours;
step five: starting a vibrating table to liquefy saturated tailing sand in the model box 1;
step six: starting the speed regulating motor 3, outputting a dragging force, and enabling the dragging rod 10 to move in the liquefied tailing sand at a constant speed; the transmission process of the towing force is as follows: firstly, driving a screw rod 4 to rotate through a speed regulating motor 3, synchronously driving a screw nut 5, a sliding table 6 and a traction rod 8 to linearly move through the rotation of the screw rod 4, and finally dragging a traction rod 10 through the linear movement of the traction rod 8 by means of a traction steel wire 9; because the whole power traction assembly is not contacted with the vibrating table, the influence of the output vibration of the vibrating table on the power traction assembly is effectively avoided, and the testing precision is ensured.
Step seven: by the formula η=2 (F-e d DL)/3 vL, wherein eta is apparent viscosity, F is towing force, e d The soil pressure is D, the diameter of the hauling rod is D, L is the length of the hauling rod, and v is the moving speed of the hauling rod.
The embodiments are not intended to limit the scope of the invention, but rather are intended to cover all equivalent implementations or modifications that can be made without departing from the scope of the invention.
Claims (2)
1. The utility model provides a tailing sand power apparent viscosity measuring device which characterized in that: comprises a model box, a power traction assembly, a data acquisition assembly and a water supply assembly; the model box is fixedly arranged on the vibrating table; the power traction assembly comprises a rigid frame, a speed regulating motor, a screw rod, a nut, a sliding table, a guide rod, a traction rod, traction steel wires, a traction rod and a traction rod guide rail; the rigid frame is fixedly connected with the ground; the speed regulating motor is fixedly arranged on the rigid frame through a motor bracket; the screw rod is horizontally arranged at the top of the rigid frame through a bearing seat, and one end of the screw rod is fixedly connected with a motor shaft of the speed regulating motor through a coupler; the nut is sleeved on the screw rod; the guide rod is fixedly arranged on the rigid frame and is parallel to the lead screw; the lower end of the sliding table is connected to the guide rod, and the sliding table has linear movement freedom degree on the guide rod; the upper end of the sliding table is fixedly connected with the nut; the traction rod is vertically and fixedly arranged at the lower end of the sliding table; the towing bar guide rail is arranged on the inner surface of the model box and is parallel to the lead screw; the two ends of the rod body of the hauling rod are in ball structures, the end ball heads of the hauling rod are positioned in the hauling rod guide rail, the hauling rod is perpendicular to the hauling rod guide rail, and the end ball heads of the hauling rod have linear movement freedom degree in the hauling rod guide rail; one end of the traction steel wire is fixedly connected to the middle part of the traction rod, and the other end of the traction steel wire is fixedly connected to the traction rod; the data acquisition component is positioned in the model box; the water supply assembly is positioned outside the model box; the data acquisition component comprises a tension sensor, a displacement sensor, a pore pressure sensor and a soil pressure sensor; the tension sensor is arranged on the traction steel wire; the displacement sensor, the pore pressure sensor and the soil pressure sensor are arranged on the inner surface of the model box; the water supply assembly comprises a water tank, a tap and a water injection pipe; the water tank is fixed above the ground, and the water tap is arranged at the bottom of the water tank; the bottom end pipe orifice of the water injection pipe is communicated with the bottom of the model box, the water injection pipe is vertically arranged, the water injection pipe is made of transparent materials, a graduated scale is arranged on the surface of the water injection pipe, and the liquid level is marked through the graduated scale; the top end of the water injection pipe is funnel-shaped; the number of the hauling bars is several, the hauling bars are uniformly distributed in the height direction in the model box, each hauling bar is matched with a group of hauling bar guide rails, and each hauling bar is connected with the hauling bar through a traction steel wire; the model box is a rectangular box body and adopts a detachable structure, the model box consists of a bottom plate, a front side plate, a rear side plate, a left side plate and a right side plate, the bottom plate is fixedly connected with the vibrating table, the front side plate, the rear side plate, the left side plate, the right side plate and the bottom plate are connected through slots, and the front side plate adopts a transparent plate; the joints among the bottom plate, the front side plate, the rear side plate, the left side plate and the right side plate are sealed by sealant; the inner surfaces of the left side plate and the right side plate are additionally provided with inner liners for reducing boundary effects; the hollow rod structure is adopted by the towing rod, the hollow ball head structure is adopted by the end ball head of the towing rod, the arc-shaped cross section of the towing rod guide rail is adopted, the point contact form is adopted between the end ball head of the towing rod and the towing rod guide rail, and the detachable structure is adopted between the towing rod guide rail and the model box.
2. A tailing sand power apparent viscosity measuring method, which adopts the tailing sand power apparent viscosity measuring device as set forth in claim 1, and is characterized by comprising the following steps:
step one: fixedly mounting the assembled model box on a vibrating table;
step two: respectively installing a power traction assembly, a data acquisition assembly and a water supply assembly in place;
step three: paving tailing sand in the model box by adopting a sand rain method, leveling the surface of a sand layer every paving a layer of tailing sand, and then injecting water into the model box until the water surface in the model box exceeds the surface of the sand layer by at least 5cm, so as to ensure that the tailing sand is in a saturated state;
step four: after the tailing sand in the model box is completely paved, standing for 24 hours;
step five: starting a vibrating table to liquefy saturated tailing sand in the model box;
step six: starting a speed regulating motor, outputting a dragging force, and enabling the dragging rod to move in the liquefied tailing sand at a constant speed;
step seven: by the formula η=2 (F-e d DL)/3 vL, wherein eta is apparent viscosity, F is towing force, e d The soil pressure is D, the diameter of the hauling rod is D, L is the length of the hauling rod, and v is the moving speed of the hauling rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811469398.8A CN109269940B (en) | 2018-11-28 | 2018-11-28 | Tailing sand power apparent viscosity measuring device and method |
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| US4893500A (en) * | 1987-03-20 | 1990-01-16 | Reciprotor A/S | Method of measuring the flow properties of high viscosity fluids as well as a device for carrying out the inventive method |
| CN101788444A (en) * | 2010-01-15 | 2010-07-28 | 河海大学 | Device for measuring apparent viscosity of liquefied sand and method therefor |
| CN102012353A (en) * | 2010-09-27 | 2011-04-13 | 河海大学 | Measuring device and method of apparent viscosity of saturated sand in high pore pressure ratio state |
| CN102353619A (en) * | 2011-06-28 | 2012-02-15 | 清华大学 | Needle penetration measurement device and method for characterizing rheological behaviour of high-viscosity solid fuel ash |
| CN102564903A (en) * | 2011-12-26 | 2012-07-11 | 河海大学 | Test device for testing flow characteristics of liquefied sand and test method |
| CN103293082A (en) * | 2013-05-30 | 2013-09-11 | 河海大学 | Testing device and method for measuring sandy soil moving states under different liquefaction degrees |
| CN207066922U (en) * | 2017-03-10 | 2018-03-02 | 钦州学院 | A kind of viscosity test device |
| CN107036937A (en) * | 2017-05-25 | 2017-08-11 | 江苏大学 | Sand apparent viscosity measurement apparatus and measuring method after one kind liquefaction |
| CN108179767A (en) * | 2017-12-18 | 2018-06-19 | 济南大学 | A kind of experimental rig and method for visualizing subway station and section liquefaction uplifting |
| CN108587578A (en) * | 2018-02-07 | 2018-09-28 | 西南石油大学 | A kind of water-base drilling fluid and its preparation method and application |
| CN209247574U (en) * | 2018-11-28 | 2019-08-13 | 辽宁工程技术大学 | A kind of CHARACTERISTICS OF TAILINGS SAND power apparent viscosity measuring device |
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