CN111006993A - Stability detection device for gangue cemented filling material and use method thereof - Google Patents
Stability detection device for gangue cemented filling material and use method thereof Download PDFInfo
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- CN111006993A CN111006993A CN201911153455.6A CN201911153455A CN111006993A CN 111006993 A CN111006993 A CN 111006993A CN 201911153455 A CN201911153455 A CN 201911153455A CN 111006993 A CN111006993 A CN 111006993A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
A device for detecting the stability of a gangue cementing filling material and a using method thereof belong to the field of gangue cementing filling material detection, and aim at providing a device for detecting the long-term stability of the gangue cementing filling material in a corrosive environment, which comprises a corrosive liquid cylinder, an upper pressure plate, a middle pressure plate, a lower pressure plate and a bottom plate, wherein the upper pressure plate, the middle pressure plate, the lower pressure plate and the bottom plate are connected through a lead screw, the corrosive liquid cylinder is positioned at the top end of the upper pressure plate, a hydraulic jack is arranged between the upper pressure plate and the middle pressure plate, a corrosive cylinder is arranged between the middle pressure plate and the lower pressure plate, a gangue test piece is arranged in the corrosive cylinder, a pore plate is arranged at the top of the gangue test piece, two ends of the corrosive liquid cylinder are respectively connected with two ends of the pore plate through liquid guide pipes, a pressure sensor is arranged between the pore plate and the middle pressure plate, a folding spring is arranged between the lower pressure plate and the bottom plate. The invention can realize long-term corrosion test and save cost and time.
Description
Technical Field
The invention belongs to the technical field of detection of gangue cemented filling materials, and particularly relates to a stability detection device for gangue cemented filling materials and a using method thereof.
Background
China is a big energy country, coal is the main body of an energy structure, and a series of problems such as surface subsidence, underground water damage, vegetation recession, land occupation by coal gangue and the like are caused in the past large-scale mining. Meanwhile, with the development of economic society of China, environmental protection and sustainable development are promoted. As a green mining technology, the cemented filling mining is an effective means for solving the problems, so that a gangue cemented filling material using coal gangue as an aggregate is produced at the same time.
In the gangue cemented filling mining technology, the design of a filling body is a key link of structural filling, and whether the design of the filling body is reasonable or not directly influences the moving deformation control effect of an overlying rock stratum and the safety and stability of an underground space. Due to the complex underground environment of the coal mine, the long-term performance of the filling material is deteriorated. Therefore, when the structural filling body is designed, the stress condition of the filling body is analyzed according to the actual working condition, and the factors of environmental influence are fully considered. The filling body can bear the load of the overlying strata and can be corroded by mine water in different directions. Mine water containing SO4 2-、Cl-、Mg2+And the corrosive ions are removed, so that the device and the method have important significance for researching the long-term stability detection device and method of the coal gangue cemented filling material under the mine water corrosion effect.
Disclosure of Invention
The invention aims to provide a device for detecting the long-term stability of a gangue cemented filling material in a corrosive environment.
The invention adopts the following technical scheme:
the utility model provides a waste rock cemented filling material stability detection device, including the corruption liquid jar, the top board, the intermediate pressure board, holding down plate and bottom plate pass through the lead screw and connect, the corruption liquid jar is located the top of top board, be equipped with hydraulic jack between top board and the intermediate pressure board, be equipped with the corruption jar that is equipped with corrosive solution between intermediate pressure board and the holding down plate, be equipped with the gangue test piece in the corruption jar, gangue test piece top is equipped with the pore board, the both ends of corruption liquid jar are connected with the both ends of pore board through the catheter of taking the valve respectively, be equipped with pressure sensor between pore board and the intermediate pressure board, pressure sensor has the digital display instrument through data line connection, be equipped with the digital display amesdial between pore board and the holding down plate, be equipped.
And a pressing plate is arranged at the bottom of the coal gangue test piece.
And a liquid outlet is formed in the bottom of the side wall of the corrosion cylinder.
Grid nets are respectively arranged at the upper end and the lower end of the coal gangue test piece.
And nuts are respectively arranged at the connecting ends of the upper pressure plate, the middle pressure plate, the lower pressure plate, the bottom plate and the screw rod.
And the pore plate is internally provided with pores which are communicated with each other.
And the bottom of the bottom plate is provided with an adjusting nut.
The use method of the device for detecting the stability of the gangue cemented filling material comprises the following steps:
after the components are installed, the coal gangue test piece is placed in a corrosion cylinder, a liquid discharge port of the corrosion cylinder and a valve on a liquid guide pipe are closed, a preset load is applied to the coal gangue test piece through a hydraulic jack according to a numerical value displayed by a digital display dial indicator, a corrosive solution is poured into a corrosive liquid cylinder, the valve on the liquid guide pipe is opened, the corrosive solution flows into the corrosion cylinder through a pore plate, a test is carried out, the numerical value on the digital display dial indicator is recorded periodically during the test, the concentration of the corrosive solution is checked periodically, after the test is finished, the liquid discharge port of the corrosion cylinder is opened, the corrosive solution is discharged, after the coal gangue test piece is dried, the ultrasonic amplitude, the wave speed and the resistivity of the coal gangue test piece are tested, the steps are.
The invention has the following beneficial effects
1. The invention can detect the bearing load of the test piece when the test piece is corroded, and truly simulates the erosion action of mine water in different directions when the filling body bears the load of the overlying rock stratum in the structural filling exploitation.
2. The pore plate designed by the invention can be corroded from the top of the test piece, and when corrosive liquid in the liquid guide pipe flows through the pore plate, the corrosive liquid can be corroded from the outside to the inside from the top of the test piece, so that the pore plate is more in line with the actual environment.
3. The liquid outlet beside the corrosion cylinder designed by the invention can be closed when the test piece is subjected to pressure-bearing corrosion, and the corrosive solution is discharged after the preset time is reached, so that the subsequent detection is convenient, the long-term corrosion test is realized, and the cost and the time are saved.
Drawings
FIG. 1 is a schematic front view of a detecting device according to the present invention;
FIG. 2 is a left side view of the detecting device of the present invention;
FIG. 3 is a schematic front view of the corrosion cylinder of the detecting device of the present invention;
FIG. 4 is a schematic structural diagram of a coal gangue test piece according to the present invention;
FIG. 5 is a schematic front view of an aperture plate of the present invention;
FIG. 6 is a schematic left side view of an aperture plate of the present invention;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic top view of an aperture plate of the present invention;
FIG. 9 is a sectional view taken along line B-B of FIG. 8;
wherein: 1-corrosion liquid cylinder; 2-a valve; 3, an upper pressing plate; 4-a middle pressing plate; 5-a pore plate; 6-a screw rod; 7-a liquid discharge port; 8-pressing the lower plate; 9-a stack spring; 10-a base plate; 11-etching solution; 12-a catheter; 13-hydraulic jack; 14-a pressure sensor; 15-coal gangue test piece; 16-corrosion cylinder; 17-a platen; 18-digital display instrument; 19-an adjusting nut; 20-resistivity tester; 21-a grid mesh; 22-digital display dial gauge; 23-nonmetal ultrasonic detector.
Detailed Description
The invention is further explained with reference to the accompanying drawings.
A device for detecting the stability of a gangue cementing filling material comprises a corrosion liquid cylinder 1, an upper pressing plate 3 and a middle pressing plate 4, the device comprises a lower pressing plate 8 and a bottom plate 10, wherein the upper pressing plate 3, a middle pressing plate 4, the lower pressing plate 8 and the bottom plate 10 are connected through a screw rod 6, a corrosion liquid cylinder 1 is located at the top end of the upper pressing plate 3, a hydraulic jack 13 is arranged between the upper pressing plate 3 and the middle pressing plate 4, a corrosion cylinder 16 filled with corrosion solution 11 is arranged between the middle pressing plate 4 and the lower pressing plate 8, a coal gangue test piece 15 is arranged in the corrosion cylinder 16, a pore plate 5 is arranged at the top of the coal gangue test piece 15, two ends of the corrosion liquid cylinder 1 are respectively connected with two ends of the pore plate 5 through a liquid guide pipe 12 with a valve 2, a pressure sensor 14 is arranged between the pore plate 5 and the middle pressing plate 4, the pressure sensor 14 is connected with a digital display instrument 18 through a data line, a digital display dial indicator 22 is arranged between the pore plate 5 and.
And a pressing plate 17 is arranged at the bottom of the coal gangue test piece 15.
The bottom of the side wall of the corrosion cylinder 16 is provided with a liquid outlet 7.
Grid nets 21 are respectively arranged at the upper end and the lower end of the coal gangue test piece 15.
And nuts are respectively arranged at the connecting ends of the upper pressing plate 3, the middle pressing plate 4, the lower pressing plate 8, the bottom plate 10 and the screw rod 6.
The pore plate 5 is internally provided with pores which are communicated with each other.
The bottom of the bottom plate 10 is provided with an adjusting nut 19.
The use method of the device for detecting the stability of the gangue cemented filling material comprises the following steps:
after the components are installed, the coal gangue test piece 15 is placed in a corrosion cylinder 16, a liquid discharge port 7 of the corrosion cylinder 16 and a valve 2 on a liquid guide pipe 12 are closed, a preset load is applied to the coal gangue test piece 15 through a hydraulic jack 13 according to a numerical value displayed by a digital display dial indicator 22, a corrosive solution 11 is poured into a corrosive liquid cylinder 1, the valve 2 on the liquid guide pipe 12 is opened, the corrosive solution 11 flows into the corrosion cylinder 16 through a pore plate 5, a test is carried out, the numerical value on the digital display dial indicator 22 is recorded periodically during the test, the concentration of the corrosive solution 11 is checked periodically, after the test is completed, the liquid discharge port of the corrosion cylinder 16 is opened, the corrosive solution 11 is discharged, after the coal gangue test piece 15 is dried, the ultrasonic amplitude, the wave speed and the resistivity of the coal gangue test piece 15 are tested, the steps are.
The axial damage change of the test piece after corrosion is tested by a resistivity tester (RK 2678).
The purpose of the digital display dial indicator (QFH-400A, resolution 0.001 mm) is to record creep deformation of the test piece.
And a nonmetal ultrasonic detector (ZBL-U510) is used for testing the ultrasonic amplitude and the wave speed of the test piece after corrosion.
The stacked spring can maintain the constant load, so that the test piece bears the load more uniformly.
The liquid guide pipe is a special corrosion-resistant plastic pipe.
The coal gangue test piece is formed by pouring filling materials, the size of the coal gangue test piece is 100mm x 300mm (the size can be adjusted according to actual conditions), a grid net is embedded in the upper portion and the lower portion of the coal gangue filling body respectively, and in the test, the grid net is an aluminum grid net.
The corrosion solution is sulfuric acid solution.
The working principle of the invention is as follows:
after applying pressure to the test piece, firstly ensuring that the liquid outlet 7 beside the corrosion cylinder 16 is closed, closing the valve 2 on the liquid guide pipe 12, and then injecting the prepared sulfuric acid solution into the corrosion cylinder 1 according to the required test requirements. The valve 2 on the liquid guide pipe 12 is opened, the sulfuric acid solution flows to the pore plate 5 from the corrosion liquid cylinder 1 through the liquid guide pipe 12, and the corrosion to the coal gangue test piece 15 is carried out from top to bottom due to the porosity of the pore plate 5, so that the corrosion environment of the coal gangue filling body is truly simulated, namely the corrosion from the outside to the inside and under all directions and pressure is realized. During the corrosion period, the concentration of the sulfuric acid solution is measured periodically and controlled within a certain range. And after the preset corrosion period is reached, a liquid outlet 7 beside the corrosion cylinder 16 is opened, the sulfuric acid solution is discharged, after the coal gangue filling test piece is detected, if corrosion continues, the discharged sulfuric acid solution can be injected into the corrosion liquid cylinder again for reuse, and the cost and the time are saved.
Claims (8)
1. The utility model provides a waste rock cemented filling material stability detection device which characterized in that: comprises a corrosion liquid cylinder (1), an upper pressure plate (3), a middle pressure plate (4), a lower pressure plate (8) and a bottom plate (10), wherein the upper pressure plate (3), the middle pressure plate (4), the lower pressure plate (8) and the bottom plate (10) are connected through a screw rod (6), the corrosion liquid cylinder (1) is positioned at the top end of the upper pressure plate (3), a hydraulic jack (13) is arranged between the upper pressure plate (3) and the middle pressure plate (4), a corrosion cylinder (16) filled with a corrosion solution (11) is arranged between the middle pressure plate (4) and the lower pressure plate (8), a coal gangue test piece (15) is arranged in the corrosion cylinder (16), a pore plate (5) is arranged at the top of the coal gangue test piece (15), two ends of the corrosion liquid cylinder (1) are respectively connected with two ends of the pore plate (5) through a liquid guide pipe (12) with a valve (2), a pressure sensor (14) is arranged between the pore plate (5) and the middle pressure plate (4), the, a digital dial indicator (22) is arranged between the pore plate (5) and the lower pressure plate (8), and a folding spring (9) is arranged on the screw rod (6) between the lower pressure plate (8) and the bottom plate (10).
2. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: and a pressing plate (17) is arranged at the bottom of the coal gangue test piece (15).
3. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: and a liquid outlet (7) is formed at the bottom of the side wall of the corrosion cylinder (16).
4. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: grid nets (21) are respectively arranged at the upper end and the lower end of the coal gangue test piece (15).
5. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: and nuts are respectively arranged at the connecting ends of the upper pressing plate (3), the middle pressing plate (4), the lower pressing plate (8), the bottom plate (10) and the screw rod (6).
6. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: the pore plate (5) is internally provided with pores which are communicated with each other.
7. The device for detecting the stability of the gangue cemented filling material according to claim 1, characterized in that: the bottom of the bottom plate (10) is provided with an adjusting nut (19).
8. The use method of the gangue cement filling material stability detection device according to any one of claims 1 to 7, characterized by comprising the following steps: the method comprises the following steps:
after the components are installed, the coal gangue test piece (15) is placed in a corrosion cylinder (16), a liquid discharge port (7) of the corrosion cylinder (16) and a valve (2) on a liquid guide pipe (12) are closed, a preset load is applied to the coal gangue test piece (15) through a hydraulic jack (13) according to a numerical value displayed by a digital display dial indicator (22), a corrosion solution (11) is poured into a corrosion liquid cylinder (1), the valve (2) on the liquid guide pipe (12) is opened, the corrosion solution (11) flows into the corrosion cylinder (16) through a pore plate (5), a test is carried out, the numerical value on the digital display dial indicator (22) is recorded periodically during the test, the concentration of the corrosion solution (11) is checked periodically, the liquid discharge port of the corrosion cylinder (16) is opened after the test is finished, the corrosion solution (11) is discharged, and after the coal gangue test piece (15) is dried, the ultrasonic amplitude, the ultrasonic wave amplitude, the ultrasonic amplitude and, And (4) repeating the steps according to the wave velocity and the resistivity, and carrying out corrosion test for a long time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153455.6A CN111006993A (en) | 2019-11-22 | 2019-11-22 | Stability detection device for gangue cemented filling material and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911153455.6A CN111006993A (en) | 2019-11-22 | 2019-11-22 | Stability detection device for gangue cemented filling material and use method thereof |
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| CN111006993A true CN111006993A (en) | 2020-04-14 |
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| CN201911153455.6A Pending CN111006993A (en) | 2019-11-22 | 2019-11-22 | Stability detection device for gangue cemented filling material and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253226A (en) * | 2020-09-29 | 2021-01-22 | 太原理工大学 | Reinforcing filling body in structural filling mining and stability monitoring method thereof |
| CN113640097A (en) * | 2021-07-29 | 2021-11-12 | 北京科技大学 | Constant-temperature stress corrosion device and test method for multi-anchor-body test piece |
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| DE2027306A1 (en) * | 1969-06-06 | 1970-12-10 | Commissariat ä l'Energie Atomiqüe, Paris | Method and device for tensile loading of test objects |
| CN101281189A (en) * | 2008-05-15 | 2008-10-08 | 青岛理工大学 | Cement-based material constant-load composite corrosion tester |
| CN104297458A (en) * | 2014-10-29 | 2015-01-21 | 东南大学 | Measuring method for destruction-resistivity incidence relation of carbon fiber concrete |
| CN105890969A (en) * | 2016-04-08 | 2016-08-24 | 湖南城市学院 | Testing mechanism for concrete creep under corrosion action, application and creep testing method |
| CN205562295U (en) * | 2016-02-25 | 2016-09-07 | 大连理工大学 | High -strength concrete pressurized testing system that creeps |
| CN110455699A (en) * | 2019-08-16 | 2019-11-15 | 交通运输部公路科学研究所 | A kind of concrete erosion experimental provision and application method |
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2019
- 2019-11-22 CN CN201911153455.6A patent/CN111006993A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027306A1 (en) * | 1969-06-06 | 1970-12-10 | Commissariat ä l'Energie Atomiqüe, Paris | Method and device for tensile loading of test objects |
| CN101281189A (en) * | 2008-05-15 | 2008-10-08 | 青岛理工大学 | Cement-based material constant-load composite corrosion tester |
| CN104297458A (en) * | 2014-10-29 | 2015-01-21 | 东南大学 | Measuring method for destruction-resistivity incidence relation of carbon fiber concrete |
| CN205562295U (en) * | 2016-02-25 | 2016-09-07 | 大连理工大学 | High -strength concrete pressurized testing system that creeps |
| CN105890969A (en) * | 2016-04-08 | 2016-08-24 | 湖南城市学院 | Testing mechanism for concrete creep under corrosion action, application and creep testing method |
| CN110455699A (en) * | 2019-08-16 | 2019-11-15 | 交通运输部公路科学研究所 | A kind of concrete erosion experimental provision and application method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253226A (en) * | 2020-09-29 | 2021-01-22 | 太原理工大学 | Reinforcing filling body in structural filling mining and stability monitoring method thereof |
| CN113640097A (en) * | 2021-07-29 | 2021-11-12 | 北京科技大学 | Constant-temperature stress corrosion device and test method for multi-anchor-body test piece |
| CN113640097B (en) * | 2021-07-29 | 2023-01-24 | 北京科技大学 | Constant-temperature stress corrosion device and test method for multi-anchor-body test piece |
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Application publication date: 20200414 |