CN109269842B - Sampling device for obtaining cementing filling slurry at different layers and working method thereof - Google Patents
Sampling device for obtaining cementing filling slurry at different layers and working method thereof Download PDFInfo
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- CN109269842B CN109269842B CN201811316334.4A CN201811316334A CN109269842B CN 109269842 B CN109269842 B CN 109269842B CN 201811316334 A CN201811316334 A CN 201811316334A CN 109269842 B CN109269842 B CN 109269842B
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- 239000002002 slurry Substances 0.000 title claims abstract description 75
- 238000005070 sampling Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 57
- 238000007599 discharging Methods 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 238000007664 blowing Methods 0.000 claims 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000005065 mining Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N2001/2007—Flow conveyors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a sampling device for acquiring cementing filling slurry at different layers and a working method thereof, wherein the sampling device comprises a transfer device, a loading device and a base, the transfer device comprises a transfer platform, a push plate and a square container, the push plate is arranged between baffle plates at two sides of the transfer platform, and the square container is arranged at the bottom of the transfer platform; the charging device consists of a discharging cylinder, a piston, a sealing ring and a fixed ring, wherein the piston is arranged in the discharging cylinder, the sealing ring is arranged outside the piston, and the discharging cylinder is arranged on the base through the fixed ring; the base comprises support frame, electric telescopic link and slide bar, and the slide bar is located the support frame lower part, and electric telescopic link dress is fixed on the slide bar wantonly. The transfer device is arranged at the upper end of the discharging barrel to transfer the slurry, and the electric telescopic rod pushes the piston inside the discharging barrel to sample the slurry at different layers. The device is easy to operate and high in practicability, and solves the problem of obtaining slurry samples at different layers on the premise of not disturbing the internal structure of the slurry of the cemented filling material.
Description
Technical Field
The invention relates to a sampling device for obtaining cementing filling slurry at different layers and a working method thereof, belonging to the technical field of mine filling and material sampling.
Background
In recent years, building green mines, developing green mining industry becomes a behavioural outline, development goal and urgent need of the China mining industry. Filling mining is taken as a green mining technology, and is one of the important technical means of scientific mining.
The cemented filling is an important branch of mine filling exploitation technology, which is to mix solid wastes such as tailings, gangue, fly ash and the like with a proper amount of cementing materials, add water, mix and stir the mixture to prepare cemented filling slurry, then convey the filling slurry to a goaf along a pipeline in a pumping or self-flowing mode for filling operation, and then solidify the slurry in the goaf to form a filling body with certain strength and integrity. The cemented filling body plays a certain supporting role on the top plate, and can slow down the sinking of the top plate so as to weaken the damage of the rock stratum of the top plate. The mine pressure of the working face after filling exploitation is not obvious, the safety coefficient of the working face is high, the subsidence and deformation of the earth surface above the goaf are small, the resource exploitation rate is greatly improved, and the method is a green exploitation technology and is widely applied in China, australia, canada and other countries or even worldwide.
The cemented filling material is used as a supporting body for supporting the movement of rock stratum, is one of the cores of the cemented filling mining technology, and has important research value. The study on the performance of the cementing filling material mainly aims at the conveying performance and the mechanical performance of the material. The ideal filling material not only needs to have good flowability for easy transport, but also has sufficient strength to support the surrounding rock after setting. In practical application, the slurry of the cementing filling material can generate physical and chemical changes such as particle sedimentation, hydration reaction and the like in the conveying process, so that the slurry performance difference of different layers in the conveying process is large, and therefore, the study on the performances of the cementing filling material of different layers is necessary. Such studies require sampling of slurries at different horizons without disturbing the slurry of the cemented filling material. However, under the existing test conditions, it is difficult to realize sampling of the filling material slurries for different horizons without a dedicated sampling device, resulting in difficulty in performing related research work. Accordingly, there is a need to develop a sampling device for obtaining cement-filled material slurries at different horizons.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a sampling device for acquiring different-layer cemented filling slurry and a working method thereof.
The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the following technical scheme:
the sampling device for obtaining the cementing filling slurry at different layers comprises a transferring device, a charging device and a base which are sequentially arranged from top to bottom;
the transfer device comprises a transfer platform and a push plate, wherein sliding grooves are formed in baffle plates on two sides of the transfer platform, a round hole is formed in one end of the bottom of the transfer platform, a leak hole is formed in the other end of the bottom of the transfer platform, and a receiving container is placed below the leak hole; the convex blocks at the two ends of the push plate are matched and embedded into the sliding grooves, the bottom of the push plate is tightly sealed with the upper plane of the transfer platform, and the push plate slides back and forth along the direction of the round hole-leak hole between the baffle plates at the two sides;
the charging device comprises a discharging barrel, a piston, a sealing ring and a fixing ring, wherein a plurality of discharging barrels are vertically arranged and fixed on the base in a horizontal and transverse arrangement manner; the upper part and the lower part are both open, a piston which surrounds a sealing ring is arranged in the upper part and the lower part and slides up and down along the inside of the discharging cylinder;
the base comprises an electric telescopic rod, a sliding block, a sliding rod and a supporting frame, wherein the sliding rod is horizontally and transversely fixed on the inner side of the lower part of the supporting frame, the bottom of the electric telescopic rod is connected to the sliding rod through the sliding block in a sliding way and horizontally moves along the sliding rod, the sliding block is fixedly stuck to the electric telescopic rod, a threaded hole which faces the inner sliding rod and penetrates through the sliding rod is formed in the upper/lower/front/rear of the bottom of the sliding block, and the sliding block is fixed with the sliding rod through a bolt;
the bottom of the discharging cylinder is fixed on the upper plane of the supporting frame through a fixing ring at the outer side; the electric telescopic rod passes through a guide hole correspondingly arranged on the upper plane of the support frame to push the piston to move upwards, so as to be used for sampling slurries at different layers; the round holes of the transfer platform are concentrically arranged at the upper end of the discharging cylinder and used for transferring slurry.
Further, the outer wall of the lower end of the discharging cylinder is provided with threads which are connected with the fixing ring through threads; the upper end is provided with a thin outer wall bayonet with the height equal to the thickness of the bottom plate of the transfer platform and used for installing the transfer device, specifically, the outer diameter of the thin outer wall of the upper end of the discharge cylinder is equal to the diameter of the round hole and smaller than the outer diameter of the discharge cylinder at the lower part, and the transfer device is directly sleeved at the upper end of the discharge cylinder through the round hole and keeps the discharge cylinder flush with the upper plane of the round hole.
Further, the transfer device also comprises a square container, and the leak hole is a two-step square hole with a large upper part and a small lower part; the square container is characterized in that a square ring matched with the square hole is arranged at the opening at the upper end of the square container, the inner ring of the square ring is matched with the lower step of the square hole in size, the outer ring is matched with the upper step of the square hole in size, and the height and the width of the square ring are respectively matched with the height and the width of the upper step of the square hole and the width of the lower step of the square hole; the square container is matched and clamped with the square hole of the transfer platform through a square ring, and the square ring is hung on the lower step of the square hole in a matched mode.
Further, the upper plane of the square ring is reduced from outside to inside to form an inclined slope, and the inclination angle is 30-60 degrees, preferably 45 degrees.
Furthermore, the outer surface of the discharging cylinder is marked with scales, and the scale range is 0-500mm.
Further, the charging device has three specifications, and the diameters of the inner wall of the discharging cylinder are respectively 50mm, 100mm and 150mm.
Further, the central connecting line of the round hole and the square hole on the transfer platform coincides with the central line of the transfer platform.
Furthermore, the two sliding rods are arranged in parallel on the same horizontal plane.
Further, the support frame on be equipped with the locating hole for through bolted connection different specification's retainer plate.
The invention also discloses a working method of the sampling device for the cemented filling slurry, which comprises the following steps:
1) Placing the material taking slurry in a discharging cylinder, standing, and layering the slurry;
2) The sliding rod is used for supporting the sliding block and the electric telescopic rod to move, and the sliding rod is correspondingly fixed in a guide hole concentric with the discharging cylinder;
3) Controlling the electric telescopic rod to ascend to push the piston to move, pushing the slurry in the discharging cylinder to the transferring platform through the round hole, pushing the slurry to the receiving container through the leak hole by using the pushing plate on the transferring platform, taking out the receiving container filled with the sample slurry, and installing a new receiving container; and sequentially and repeatedly separating the rest slurry according to the steps, and taking out the slurries at all different layers for the next test.
The beneficial effects are that: compared with the prior art, the sampling device for acquiring the cementing filling slurry at different layers and the working method thereof provided by the invention have the following advantages: the electric telescopic rod designed by the invention can push the piston in the discharging cylinder at a low speed and a uniform speed, thereby realizing the purpose of obtaining filling slurry at different layers on the premise of not disturbing the internal structure of the cementing filling material slurry. The design of the discharging barrel with scales enables the division of the slurry layer position to be convenient, and the accuracy of sampling is realized. The device is simple to operate, high in reliability and wide in application range, and can provide a reliable way for sampling work under similar conditions.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a plan cross-sectional view of the present invention;
FIG. 4 is a perspective view of a transfer platform of the present invention;
FIG. 5 is a perspective view of a square container of the present invention;
FIG. 6 is a front cross-sectional view of the transfer device of the present invention
FIG. 7 is a perspective view of the charging device of the present invention;
FIG. 8 is a perspective view of the base of the present invention;
FIG. 9 is a graph showing experimental results of an embodiment of the present invention.
In the figure: 1. a transfer platform; 2. a push plate; 3. a square container; 4. a discharging cylinder; 5. a piston; 6. a seal ring; 7. a fixing ring; 8. an electric telescopic rod; 9. a slide block; 10. a slide bar; 11. a support frame; 12. guide holes 13 and positioning holes.
Detailed Description
The invention will be further described with reference to the drawings and examples.
A sampling device for obtaining a different horizon cement filling slurry is shown in fig. 1-8 and comprises a transfer device, a loading device and a base. The transfer device comprises a transfer platform 1, a push plate 2 and a square container 3, wherein sliding grooves are formed in baffle plates on two sides of the transfer platform 1, a round hole is formed in the top of the transfer platform, and a square hole which is gradually reduced from top to bottom is formed in the other side of the round hole; the push plate 2 is slidably arranged on the transfer platform 1 through a chute; the square container 3 is connected with the transfer platform 1 in a clamping way through a square ring at the opening of the upper end of the square container 3. The charging device comprises a discharging barrel 4, a piston 5, a sealing ring 6 and a fixing ring 7, wherein the discharging barrel 4 is vertically arranged, the upper part and the lower part of the discharging barrel are both open, the piston 5 which surrounds the sealing ring 6 is arranged inside the discharging barrel, and the discharging barrel slides up and down along the inside of the discharging barrel 4. The base includes electric telescopic handle 8, slider 9 and slide bar 10 and support frame 11, and slide bar 10 level is fixed in support frame 11 lower part inboard, and electric telescopic handle 8's bottom passes through slider 9 sliding connection on slide bar 10, can follow slide bar 10 horizontal migration, slider 9 is fixed with electric telescopic handle 8 paste, and the slider 9 bottom link up and be provided with the screw hole, and slider 9 passes through the bolt fastening with slide bar 10. The bottom of the discharging cylinder 4 is fixed on the upper plane of the supporting frame 11 through the outer fixing ring 7; the electric telescopic rod 8 passes through a guide hole 12 formed on the upper plane of the supporting frame 11 to push the piston 4 to move upwards for sampling slurries at different layers; the round holes of the transfer platform 1 are concentrically arranged at the upper end of the discharging cylinder 4 and used for transferring slurry.
Preferably, the outer wall of the lower end of the discharging cylinder 4 is provided with threads, and the discharging cylinder is connected with the fixed ring 7 through threads; the bayonet with the thin outer wall with the height of 20mm at the upper end is used for installing the transfer device, and particularly, the outer wall with the height of 20mm at the upper end of the discharging barrel is thinner than a half of the outer wall at the lower part, and the diameter of the round hole is the same as that of the outer wall at the upper end of the discharging barrel, so that the transfer device can be directly sleeved at the upper end of the discharging barrel. The outer surface of the discharging cylinder 4 is marked with scales, and the scale range is 0-500mm; the charging device has three specifications, and the diameters of the inner wall of the discharging cylinder 4 are respectively 50mm, 100mm and 150mm; the diameter of the upper end thin wall of the discharging barrel 4 is equal to the diameter of the round hole. The two sliding rods 10 are arranged in parallel on the same horizontal plane, so that the electric telescopic rods are prevented from rotating around the sliding rods for balance and stability. Wherein the supporting frame 11 is provided with positioning holes 13 for connecting the fixing rings 7 with different specifications through bolts. The transfer platform 1 is provided with a round hole matched with the bayonet of the charging barrel 4 and a square hole matched with the square container 3, and the transfer platform 1, the square container 3 and the discharging barrel 4 can be detached.
As shown in fig. 3-6, the opening at the top of the square container 3 is in a structure of inclining downwards and inwards to form a slope, so that the matching and fixing with the transfer platform 1 can be realized, and the self-flowing effect of the slurry can be realized.
Examples
Aiming at the cemented filling slurry with the mass concentration of 70%, the slurry is formed by mixing tailings, cement and water, and the change rule of the concentration of different layers of the slurry along with time is measured. Taking 800mL of slurry, placing the slurry into a discharging cylinder 4 with the diameter of 50mm, standing for one hour, moving an electric telescopic rod 8 to correspond to a guide hole 12 and fixing the electric telescopic rod, enabling the electric telescopic rod 8 to ascend and push a piston 5 to move, pushing the slurry in the discharging cylinder 4 into a transfer platform 1 through a round hole, pushing the slurry to pass through a square hole to a square container 3 by using a push plate 2 on the transfer platform 1, taking out the square container 3 with a slurry sample, installing a new square container 3, sequentially and repeatedly separating the rest slurry according to the steps, taking out all the slurry, and measuring the concentration of the slurry at different layers. In the test process, the slurry can be divided into eight layers according to the scales on the discharging barrel 4, and is taken out for eight times, and 100mL of slurry is obtained each time. And finally, detecting the concentration of the slurry samples at the different layers, and obtaining the mass concentration of the slurry at the different layers. The test results show that the slurry with the original concentration of 70% is kept for one hour, and the concentration of the slurry is 69.85%, 70.05%, 70.25%, 70.45%, 70.65%, 70.85%, 71.05% and 71.25% from top to bottom, so that the concentration distribution of different layers of the slurry after being kept for one hour is shown in fig. 9.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (12)
1. The sampling device for obtaining the cementing filling slurry at different layers is characterized by comprising a transferring device, a charging device and a base which are sequentially arranged from top to bottom;
the transfer device comprises a transfer platform (1) and a push plate (2), wherein sliding grooves are formed in baffle plates on two sides of the transfer platform (1), a round hole is formed in one end of the bottom of the transfer platform, a leak hole is formed in the other end of the bottom of the transfer platform, and a receiving container is placed below the leak hole; the convex blocks at two ends of the push plate (2) are matched and embedded into the sliding grooves, the bottom is tightly sealed with the upper plane of the transfer platform (1), and the push plate (2) slides back and forth between the baffles at two sides along the direction of the round hole-the leak hole;
the charging device comprises a discharging barrel (4), a piston (5), a sealing ring (6) and a fixing ring (7), wherein a plurality of discharging barrels (4) are vertically arranged and fixed on a base along the horizontal and transverse arrangement; the upper part and the lower part are both open, a piston (5) which surrounds a sealing ring (6) is arranged in the upper part and the lower part and slides up and down along the inside of the discharging cylinder (4);
the base comprises an electric telescopic rod (8), a sliding block (9), a sliding rod (10) and a supporting frame (11), wherein the sliding rod (10) is horizontally and transversely fixed on the inner side of the lower part of the supporting frame (11), the bottom of the electric telescopic rod (8) is connected to the sliding rod (10) in a sliding way through the sliding block (9) and horizontally moves along the sliding rod (10), the sliding block (9) is fixedly adhered to the electric telescopic rod (8), the upper part/lower part/front part/rear part of the bottom of the sliding block (9) is provided with a threaded hole which faces the inner sliding rod (10) and penetrates through the sliding rod (10), and the sliding block (9) is fixed with the sliding rod (10) through a bolt;
the bottom of the discharging cylinder (4) is fixed on the upper plane of the supporting frame (11) through a fixing ring (7) at the outer side; the electric telescopic rod (8) passes through a guide hole (12) correspondingly arranged on the upper plane of the supporting frame (11) to push the piston (5) to move upwards for sampling slurries at different layers; the round hole of transfer platform (1) is arranged in the upper end of blowing section of thick bamboo (4) with one heart and is used for the transfer of ground paste, and transfer device passes through this round hole direct cover at blowing section of thick bamboo (4) upper end, and transfer platform (1), square container (3) and blowing section of thick bamboo (4) all can dismantle.
2. The sampling device for obtaining the cementing filling slurry at different layers according to claim 1, wherein the outer wall of the lower end of the discharging cylinder (4) is provided with threads which are connected with the fixing ring (7) through threads; the upper end is provided with a thin outer wall bayonet with the height equal to the thickness of the bottom plate of the transfer platform (1) for installing the transfer device.
3. A sampling device for obtaining a different level cementitious filler slurry according to claim 2, characterized in that the outer diameter of the thin outer wall of the upper end of the discharge cylinder (4) is equal to the diameter of the circular hole and smaller than the outer diameter of the discharge cylinder (4) of the lower part, and the discharge cylinder (4) is kept flush with the upper plane of the circular hole.
4. A sampling device for obtaining a cementitious filler slurry at different levels according to claim 1, characterized in that said transfer device further comprises a square container (3), said leak being a two-step square hole with a large top and a small bottom; the square container (3) is provided with a square ring matched with the square hole at the opening at the upper end, the inner ring of the square ring is matched with the lower step of the square hole in size, the outer ring is matched with the upper step of the square hole in size, and the height and the width of the square ring are respectively matched with the height and the width of the upper step of the square hole and the width of the lower step of the square hole; the square container (3) is matched and clamped with the square hole of the transfer platform (1) through a square ring, and the square ring is hung on the lower step of the square hole in a matching manner.
5. The sampling device for obtaining a differential horizon cement slurry according to claim 4 wherein the upper plane of the square ring decreases in height from the outside to the inside forming an inclined ramp with an angle of 30-60 °.
6. A sampling device for obtaining a differential horizon cement filling slurry according to claim 5 wherein the angle of inclination is 45 °.
7. A sampling device for obtaining a cementitious filler slurry at different levels according to claim 1, characterised in that the outer surface of the discharge cylinder (4) is marked with graduations ranging from 0 to 500mm.
8. A sampling device for obtaining a cementitious filler slurry at different levels according to claim 1, wherein the loading device has three gauges, the diameter of the inner wall of the discharge vessel (4) being 50mm, 100mm and 150mm, respectively.
9. A sampling device for obtaining a different horizon cement filling slurry according to claim 1 wherein the centre line of the circular and square holes on the transfer platform (1) coincides with the centre line of the transfer platform (1).
10. A sampling device for obtaining a cementitious filler slurry at different levels according to claim 1, characterized in that said slide bars (10) are arranged in parallel to each other on the same horizontal plane.
11. The sampling device for obtaining cement filling slurries at different levels according to claim 1, characterized in that the supporting frame (11) is provided with positioning holes (13) for connecting fixing rings (7) with different specifications through bolts.
12. A method of operating a sampling device for obtaining a differential horizon cement slurry according to any one of claims 1 to 11, comprising the steps of:
1) Placing the material taking slurry in a discharging cylinder (4), standing and layering the slurry;
2) The sliding rod (10) is used for supporting the sliding block (9) and the electric telescopic rod (8) to move, and the sliding rod is correspondingly fixed in a guide hole (12) concentric with the discharging cylinder (4);
3) Controlling an electric telescopic rod (8) to ascend to push a piston (5) to move, pushing slurry in a discharging cylinder (4) into a transfer platform (1) through a round hole, pushing the slurry to a receiving container through a leak hole by using a push plate (2) on the transfer platform (1), taking out the receiving container filled with sample slurry, and installing a new receiving container; and sequentially and repeatedly separating the rest slurry according to the steps, and taking out the slurries at all different layers for the next test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316334.4A CN109269842B (en) | 2018-11-07 | 2018-11-07 | Sampling device for obtaining cementing filling slurry at different layers and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316334.4A CN109269842B (en) | 2018-11-07 | 2018-11-07 | Sampling device for obtaining cementing filling slurry at different layers and working method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN109269842A CN109269842A (en) | 2019-01-25 |
| CN109269842B true CN109269842B (en) | 2023-10-27 |
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| CN201811316334.4A Active CN109269842B (en) | 2018-11-07 | 2018-11-07 | Sampling device for obtaining cementing filling slurry at different layers and working method thereof |
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| CN113405850B (en) * | 2021-06-24 | 2022-03-29 | 北京科技大学 | Slurry on-site sampling device in goaf filling process and use method |
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