CN214584676U - Test device for simulating slurry flow law of goaf caving zone under different inclination angles - Google Patents
Test device for simulating slurry flow law of goaf caving zone under different inclination angles Download PDFInfo
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- CN214584676U CN214584676U CN202022569374.9U CN202022569374U CN214584676U CN 214584676 U CN214584676 U CN 214584676U CN 202022569374 U CN202022569374 U CN 202022569374U CN 214584676 U CN214584676 U CN 214584676U
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Abstract
The utility model discloses a test device of collecting space area caving zone slurry flow law under different inclination of simulation, including experimental box, grouting pump, upset platform, optic fibre frequency-resolving appearance, humidity optical fiber sensor, data acquisition line and slip casting pipeline constitution. The test box body is hinged with one end of the overturning platform, the box body is overturned at a certain angle through a jack at the top of the overturning platform, and inclination angles of different coal beds are simulated. The humidity optical fiber sensor is embedded in the box body, after the three-side protection plate is installed in the slot in the bottom of the box body, the bulk material is uniformly filled into the box body, then a grouting pipeline is opened, slurry containing a coloring agent flows into the bulk material through the grouting pipeline, the slurry flows along crack diffusion, and quantitative analysis is carried out on the slurry diffusion rule through a data acquisition line and an optical fiber frequency demultiplier.
Description
Technical Field
The utility model belongs to the technical field of green mine collecting space area slip casting, concretely relates to simulating different inclination under collecting space area caving zone slurry flow law's test device.
Background
With the improvement of environmental awareness, environmental standards and related requirements in the development process of a mining area become stricter and stricter, the collapse of the goaf brings non-negligible negative effects to the green development of the mining area, the negative effects such as environmental pollution are more and more difficult to accept, and even the survival of a coal mine is influenced, so that higher requirements are provided for the goaf treatment technology. The research of grouting technology, parameters and rules usually needs basic theory as guidance, and the basic parameters measured by indoor tests have important reference significance for engineering practice. Basic test research needs a large number of repeated contrast tests to effectively determine basic parameters and master internal rules, and higher requirements are provided for the durability, economy and practicability of test equipment, but the existing goaf slurry flow test device is few and cannot meet the requirements of engineering practice, so that the development of the slurry flow test device has important significance for the technical attack and the customs of green coal mining.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simulation different inclination angle are down caving in area slurry flow's test device, it can study different inclination angles down, the collecting space area caving in area slip casting body's diffusion law.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a test device for simulating the slurry flow law of a goaf caving zone under different inclination angles comprises a test box body, a grouting pump, a turnover platform, an optical fiber frequency demultiplier, a data acquisition line and a grouting pipeline; the test box body is arranged above the overturning platform, one end of the test box body is hinged with the overturning platform, and the other end of the test box body is connected with the overturning platform through a jack; the humidity optical fiber sensor is embedded in the test box body, bulk materials are uniformly filled in the test box body, the grouting pump is communicated with the test box body through a grouting pipeline, and the humidity optical fiber sensor is connected with the optical fiber frequency-demodulating instrument through a data acquisition line.
The utility model discloses further improvement lies in, and the bottom plate of experimental box is made for rigid material, has wholly welded the round slot for fixed box four sides backplate, the slot height is the third of box height.
The utility model discloses a further improvement lies in, and the backplate includes two long limit backplate and two short edge backplate.
The utility model discloses further improvement lies in, and the backplate adopts the ya keli board material to make.
The utility model discloses further improvement lies in, and the backplate internal surface scribbles one deck transparent protection film, prevents to collide with of bulk material to the backplate among the trial and error process, leads to the rampart to scrape the hair, influences experimental observation.
The utility model discloses a further improvement lies in, and the bottom parcel of backplate has the waterproof rubber of one deck.
The utility model discloses a further improvement lies in, is provided with waterproof adhesive tape between the backplate.
The utility model discloses a further improvement lies in, the grouting pump is used for flowing in the bulk material through the slip casting pipeline with the slurry that contains the coloring agent.
The utility model discloses further improvement lies in, realizes the upset of the certain angle of box, simulates the inclination in different coal beds through the jack at upset platform top.
The utility model discloses at least, following profitable technological effect has:
the utility model provides a pair of test device of collecting space area caving zone slurry flow law under different inclination of simulation, the four sides backplate can be dismantled, and the backplate damages or scrapes the hair and can carry out nimble change, does not need the test box to change. After the experiment, can dismantle a backplate and unload, clear up after convenient experiment, the test box more has durability, economic nature, practicality characteristics in long-term use. The test box body is hinged to one end of the overturning platform, the box body is overturned at a certain angle through the jack at the top of the overturning platform, the inclination angles of different coal beds are simulated, and the gravity flow rule of slurry in a goaf under the conditions of upward inclined mining and downward inclined mining can be researched.
To sum up, the utility model discloses basic theory experimental equipment research to the green mine of underworkings colliery, solid useless processing has reference value.
Drawings
FIG. 1 is a three-dimensional view of a slurry flow test apparatus.
FIG. 2 is a three-dimensional view of the test chamber.
FIG. 3 is a three-dimensional view of a short-side guard plate of the test box
Description of reference numerals:
1-test box body; 2-grouting pump; 3-overturning the platform; 4-grating frequency-resolving instrument; 5-a jack; 6-data acquisition line; 7-a humidity fiber optic sensor; 8-grouting pipeline; 9-long edge guard plate; 10-short edge guard plate; 11-a slot; 12-a bulk material; 13-waterproof cushion block; 14-waterproof rubberized fabric; 15-grouting a preformed hole; 16-a humidity optical fiber sensor preformed hole; 17-waterproof rubber; 18-transparent protective film.
Detailed Description
The invention is further described in the following with reference to the figures and examples
As shown in fig. 1 to 3, the utility model provides a test device for simulating the slurry flow law of goaf caving zone under different dip angles, which comprises a test box body 1, a grouting pump 2, a turnover platform 3, an optical fiber frequency resolver 4, a data acquisition line 6 and a grouting pipeline 8; the test box body 1 is arranged above the overturning platform 3, one end of the test box body is hinged with the overturning platform 3, and the other end of the test box body is connected with the overturning platform 3 through a jack 5; humidity optical fiber sensor 7 is pre-buried in test box 1, and bulk material 12 has evenly been filled in test box 1 is inside, and grouting pump 2 passes through slip casting pipeline 8 and test box 1 intercommunication, and humidity optical fiber sensor 7 is connected with optic fibre frequency-demultiplier 4 through data acquisition line 6. During testing, the bulk materials 12 are uniformly filled into the box body, then the grouting pipeline 8 is opened, slurry containing the coloring agent flows into the bulk materials 12 through the grouting pipeline 8, the slurry diffuses and flows along the cracks, and quantitative analysis is carried out on the slurry diffusion rule through the data acquisition line 6 and the optical fiber frequency demultiplier 4.
The rampart of the test box body 1 consists of two long-edge guard plates 9 and two short-edge guard plates 10, and the materials are transparent acrylic plate materials, so that observation is convenient in the test process. The inner surfaces of the long-side guard plate 9 and the short-side guard plate 10 are coated with a layer of transparent protective film 18, so that the collision of bulk materials on the guard plates in the repeated test process is prevented, the annular wall is scraped, and the test observation is influenced. The bottoms of the long-edge guard plate 9 and the short-edge guard plate 10 are wrapped with a layer of waterproof rubber 17, so that the slots and the guard plates are fixed more tightly, the anti-seepage and anti-leakage effects are achieved, and meanwhile, the waterproof rubber is used as a buffer material to reduce the damage of the rigid slots 11 to the flexible guard plates. Waterproof adhesive tapes 14 are arranged between the long-edge protection plates 9 and the short-edge protection plates 10. A humidity optical fiber sensor preformed hole 16 is formed in one long-edge protection plate 9, and a grouting preformed hole 15 is formed in one short-edge protection plate 10.
The humidity optical fiber sensor 7 is a humidity sensitive material, the expansion of the humidity sensitive material changes along with the fluctuation of the environmental temperature, so that the central wavelength of the grating drifts, the environmental humidity can be measured by the optical fiber frequency analyzer 4, and the flowing range of slurry in the discrete material can be further determined.
Examples
A certain mine is mined from No. 4 coal seams, the mining depth is 350-400 m, the inclined length of a working face is 200m, the inclination angle of the coal seam is 6 degrees, and the height of a caving zone is 20m on average. The grouting process comprises the steps of grouting the high position above the goaf and the adjacent position of the roadway, wherein the filling flow is 140m3H is used as the reference value. Determining the height of the collapse zone to be 400mm according to the similarity ratio, and controlling the flow at the tail end of the filling pipeline to be 0.0014m3H, the inclination angle of the coal seam is unchanged and is 6 degrees;
1) adjusting the overturning platform 3 to enable the jack 5 to jack up the test box body 1, so that the box body and the horizontal plane form an included angle of 6 degrees;
2) installing a long-edge guard plate 9 on a slot 11 of a bottom plate of the test box body 1, and installing two short-edge guard plates 10 on the slot 11 of the bottom plate of the test box body 1;
3) the joint of the long-edge guard plate 9 and the two short-edge guard plates 10 is spliced by waterproof adhesive tapes;
4) pre-burying the humidity optical fiber sensor 7 to the bottom of the test box body 1 in advance according to the humidity optical fiber sensor reserved opening 16;
5) installing another long-edge guard plate 9, and splicing the seam of the long-edge guard plate and the seam of the two short-edge guard plates 10 by adopting waterproof adhesive tapes;
6) one end of the data acquisition line is connected with the humidity optical fiber sensor 7, and the other end of the data acquisition line is connected with the grating frequency analyzer;
7) spreading the calibrated discrete material 12 in the test box body 1;
8) the slurry containing the coloring agent is controlled by the grouting pump 2, the flow at the tail end of the grouting pipe is ensured to be injected into the test box body 1, the slurry flows along the cracks in a diffusion mode, and the slurry diffusion rule is quantitatively analyzed through the data acquisition line 6 and the optical fiber frequency demultiplier 4.
Claims (9)
1. A test device for simulating slurry flow law of goaf caving zone under different inclination angles is characterized by comprising a test box body (1), a grouting pump (2), a turnover platform (3), an optical fiber frequency demultiplier (4), a data acquisition line (6) and a grouting pipeline (8); wherein the content of the first and second substances,
the test box body (1) is arranged above the overturning platform (3), one end of the test box body is hinged with the overturning platform (3), and the other end of the test box body is connected with the overturning platform (3) through a jack (5); humidity optical fiber sensors (7) are embedded in the test box body (1), bulk materials (12) are uniformly filled in the test box body (1), a grouting pump (2) is communicated with the test box body (1) through a grouting pipeline (8), and the humidity optical fiber sensors (7) are connected with an optical fiber frequency demodulator (4) through data acquisition lines (6).
2. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 1, is characterized in that the bottom plate of the test box body (1) is made of rigid material, a circle of slot (11) is welded integrally for fixing the four side guard plates of the box body, and the height of the slot (11) is one third of the height of the box body.
3. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 2, characterized in that the guard plates comprise two long-edge guard plates (9) and two short-edge guard plates (10).
4. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 2, wherein the guard plate is made of acrylic plate material.
5. The test device for simulating the slurry flow law of the goaf caving zone under different inclination angles according to claim 2, characterized in that a layer of transparent protective film (18) is coated on the inner surface of the guard plate, so that the situation that the brush scraping of the annular wall and the influence on test observation are caused by the collision of a discrete material on the guard plate in the repeated test process are prevented.
6. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 2, characterized in that the bottom of the guard plate is wrapped with a layer of waterproof rubber (17).
7. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 2, characterized in that waterproof adhesive tapes (14) are arranged between the guard plates.
8. The test device for simulating the slurry flow law of the goaf caving zone under different dip angles according to claim 1, characterized in that a grouting pump (2) is used for flowing slurry containing a coloring agent into the discrete material (12) through a grouting pipeline (8).
9. The test device for simulating the slurry flow law of the caving zone of the goaf under different dip angles according to claim 1, wherein the box body is turned over at a certain angle through a jack (5) at the top of the turning platform (3) to simulate the dip angles of different coal beds.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112802A (en) * | 2021-11-04 | 2022-03-01 | 中煤科工集团西安研究院有限公司 | Slurry forced diffusion rule testing device and method for goaf filling |
| CN115524261A (en) * | 2022-10-14 | 2022-12-27 | 山东科技大学 | Rock stratum grouting water plugging test device and method under coupling condition for mine |
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2020
- 2020-11-09 CN CN202022569374.9U patent/CN214584676U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112802A (en) * | 2021-11-04 | 2022-03-01 | 中煤科工集团西安研究院有限公司 | Slurry forced diffusion rule testing device and method for goaf filling |
| CN115524261A (en) * | 2022-10-14 | 2022-12-27 | 山东科技大学 | Rock stratum grouting water plugging test device and method under coupling condition for mine |
| CN115524261B (en) * | 2022-10-14 | 2023-09-19 | 山东科技大学 | Rock stratum grouting water plugging test device and method under mining coupling condition |
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