CN110646262A - Grouting reinforcement material forming device under constraint condition and using method thereof - Google Patents
Grouting reinforcement material forming device under constraint condition and using method thereof Download PDFInfo
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- CN110646262A CN110646262A CN201910945070.7A CN201910945070A CN110646262A CN 110646262 A CN110646262 A CN 110646262A CN 201910945070 A CN201910945070 A CN 201910945070A CN 110646262 A CN110646262 A CN 110646262A
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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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The invention discloses a grouting reinforcement material forming device under constraint conditions and a using method thereof, wherein the grouting reinforcement material forming device comprises an experiment tank, a high-pressure gas cylinder, a three-way joint and a mould, the experiment tank comprises a tank body, an upper cover and a lower cover, the upper cover and the lower cover are respectively detachably connected to the top and the bottom of the tank body, the mould is coaxially sleeved in the tank body, a first interface of the three-way joint is communicated with the inside of the experiment tank body, a second interface of the three-way joint is connected with a pressure gauge, a third interface of the three-way joint is connected to a gas outlet of the high-pressure gas cylinder through a high-pressure gas pipe, and. The invention applies pressure to the reinforced slurry through high-pressure gas, and simulates the stress state of the slurry in the broken rock mass, thereby preparing a sample which meets the actual conditions, and further truly and effectively testing the performance of the grouting material.
Description
Technical Field
The invention relates to the technical field of laboratory test of grouting material performance, in particular to a grouting reinforcement material forming device under constraint conditions and a using method thereof.
Background
The broken rock mass is a common unfavorable geological condition in underground engineering construction, has the characteristics of low strength, poor cementing property, inconsistent stress deformation and the like, and often induces disasters such as roof collapse, large structural deformation, water inrush and the like, according to statistics, in the underground engineering (non-mine field) construction process, collapse and large deformation caused by the broken weakness of surrounding rocks respectively account for 30 ~ 50 percent of safety accidents in each field, in the mine engineering field, the number of accidents such as the collapse, collapse and the like caused by the broken weakness of the surrounding rocks of the roof are arranged at the head of the safety accidents, and the casualties caused account for 34 percent.
In the grouting method, the property of a grouting material is a very critical factor, and the quality of the grouting material determines the grouting effect. When the performance of the grouting material is tested, the test piece is usually formed in an open space, namely, the material slurry is not restrained by the outside in the solidification process. The method is deviated from the actual engineering, and in the engineering site, slurry enters the rock body along the broken rock body gap under the action of high pressure, and is restrained by the rock body to keep the high pressure, so that the method is different from the mechanical property of a test piece in an open space.
Disclosure of Invention
The invention aims to provide a grouting reinforcement material forming device capable of simulating the actual constraint conditions of engineering and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a slip casting reinforcement material forming device under constraint condition, its includes experiment jar, high-pressure gas cylinder, three way connection and mould, the experiment jar is including a jar body, upper cover and lower cover, and upper cover and lower cover can dismantle respectively and connect in the top and the bottom of jar body, the coaxial cover of mould is established at jar internally, and three way connection's first interface and the internal portion intercommunication of experiment jar, three way connection's second interface connection have the manometer, and three way connection's third interface passes through the gas outlet that high-pressure gas cylinder is connected to high-pressure gas pipe, be connected with relief pressure valve and valve on the high-pressure gas pipe.
And a first interface of the three-way joint is connected to the upper cover.
The cross section of the tank body is a circular ring, the inner diameter of the tank body is equal to the outer diameter of the die, and the height of the tank body is 6-8 times of the inner diameter of the tank body.
The mould consists of two semicircular templates, and the height of the mould is 4-5 times of the inner diameter of the mould.
The use method of the forming device comprises the following steps:
1) checking the air tightness of the device: opening the high-pressure gas cylinder, the pressure reducing valve and the valve in sequence, and filling the high-pressure gas into the experiment tank body to ensure that the high-pressure gas pressure is higher than the experiment design pressure; then closing the high-pressure gas cylinder, the pressure reducing valve and the valve, wherein the indication value change of the pressure gauge is within a preset range after 24 hours, which indicates that the device has good tightness, and if the indication value of the pressure gauge is restored to 0, the raw material belt needs to be replaced to seal the device again until the experimental tank achieves good tightness;
2) a sample preparation process: opening the upper cover, pouring the prepared slurry into the tank body, and ensuring that the distance between the slurry and the upper cover is kept to be more than 2 cm; then the upper cover is covered on the tank body tightly and sealed, and then the high-pressure gas cylinder, the pressure reducing valve and the valve are opened in sequence to charge the tank body, so that pressure is applied to the slurry; after the pressure reaches the design pressure, closing the high-pressure gas cylinder, the pressure reducing valve and the valve, and standing for 24 hours;
3) demolding: after the curing time is up, opening a valve to discharge the gas in the tank body, detaching the upper cover and the lower cover, and taking out the sample by using a stripper;
4) and (3) sample maintenance: putting the taken sample into a constant temperature box for maintaining again, setting the maintenance time according to the experimental scheme, and carrying out related performance test on the sample after the maintenance time is reached;
5) cleaning work: and after the test is finished, closing the valve and cleaning the residual slurry solids on the wall surface of the tank body.
By adopting the technology, the invention has the following beneficial effects: the invention applies pressure to the reinforced slurry through high-pressure gas, and simulates the stress state of the slurry in the broken rock mass, thereby preparing a sample which meets the actual conditions, and further truly and effectively testing the performance of the grouting material. On the other hand, after the sample is taken out of the tank body, the templates of the two semicircular rings are easily separated, so that the sample is easily prepared, and the templates are convenient to clean.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view of a test pot;
fig. 3 is a schematic view of a mold.
Detailed Description
As shown in one of figures 1-3, the grouting reinforcement material forming device under the constraint condition comprises an experiment tank 1, a high-pressure gas cylinder 1, a three-way joint 5 and a mold 6, wherein the experiment tank 1 comprises a tank body 6-2, an upper cover 6-1 and a lower cover 6-3, the upper cover 6-1 and the lower cover 6-3 are detachably connected to the top and the bottom of the tank body 6-2 respectively, the mold 6 is coaxially sleeved in the tank body 6-2, a first interface of the three-way joint 5 is communicated with the inside of the experiment tank 1, a second interface of the three-way joint 5 is connected with a pressure gauge 4, a third interface of the three-way joint 5 is connected to a gas outlet of the high-pressure gas cylinder 1 through a high-pressure gas pipe, and the high-pressure gas pipe is connected with a pressure reducing.
And a first interface of the three-way joint 5 is connected to the upper cover 6-1.
The cross section of the tank body 6-2 is a circular ring, the inner diameter of the tank body 6-2 is equal to the outer diameter of the die 6, and the height of the tank body 6-2 is 6-8 times of the inner diameter.
The die 6 consists of two semicircular templates, and the height of the die 6 is 4-5 times of the inner diameter of the die. After the sample is taken out from the tank body 6-2, the templates of the two semicircular rings are easily separated, so that the sample preparation is easy, and the cleaning of the templates is convenient.
The using method of the forming device comprises the following steps:
1) checking the air tightness of the device: opening the high-pressure gas cylinder 1, the pressure reducing valve 2 and the valve 3 in sequence, and filling high-pressure gas into the experiment tank 1 to ensure that the pressure of the high-pressure gas is higher than the experimental design pressure; then the high-pressure gas cylinder 1, the pressure reducing valve 2 and the valve 3 are closed, after 24 hours, the indication number of the pressure gauge 4 changes within a preset range, which indicates that the device has good tightness, and if the indication number of the pressure gauge 4 returns to 0, the raw material belt needs to be replaced to seal the device again until the experimental tank 1 achieves good tightness;
2) a sample preparation process: opening the upper cover 6-1, pouring the prepared slurry into the tank body 6-2, and ensuring that the distance between the slurry and the upper cover 6-1 is kept to be more than 2 cm; then, the upper cover 6-1 is tightly covered on the tank body 6-2 and sealed, and then the high-pressure gas cylinder 1, the pressure reducing valve 2 and the valve 3 are opened in sequence to inflate the tank body 6-2, so that pressure is applied to the slurry; after the pressure reaches the design pressure, closing the high-pressure gas cylinder 1, the pressure reducing valve 2 and the valve 3, and standing for 24 hours;
3) demolding: after the curing time is up, opening the valve 3 to discharge the gas in the tank body 6-2, detaching the upper cover 6-1 and the lower cover 6-3, and taking out the sample by using a stripper;
4) and (3) sample maintenance: putting the taken sample into a constant temperature box for maintaining again, setting the maintenance time according to the experimental scheme, and carrying out related performance test on the sample after the maintenance time is reached;
5) cleaning work: and after the test is finished, closing the valve 3 and cleaning the residual slurry solid on the wall surface of the tank body 6-2.
While the invention has been described in connection with the above embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (5)
1. The utility model provides a slip casting reinforcing material forming device under constraint condition which characterized in that: it includes experiment jar, high-pressure gas cylinder, three way connection and mould, the experiment jar is including a jar body, upper cover and lower cover, and upper cover and lower cover can dismantle respectively and connect in the top and the bottom of a jar body, the coaxial cover of mould is established at a jar internally, and three way connection's first interface and the internal portion intercommunication of experiment jar, three way connection's second interface connection have the manometer, and three way connection's third interface passes through high-pressure gas pipe and connects to the gas outlet of high-pressure gas cylinder, be connected with relief pressure valve and valve on the high-pressure gas pipe.
2. The apparatus for forming a grouting reinforcement material under a constraint condition according to claim 1, wherein: and a first interface of the three-way joint is connected to the upper cover.
3. The apparatus for forming a reinforcement material by grouting under a constraint condition according to claim 2, wherein: the cross section of the tank body is a circular ring, the inner diameter of the tank body is equal to the outer diameter of the die, and the height of the tank body is 6-8 times of the inner diameter of the tank body.
4. The apparatus for forming a grouting reinforcement material under a constraint condition according to claim 1, wherein: the mould consists of two semicircular templates, and the height of the mould is 4-5 times of the inner diameter of the mould.
5. Use of a molding apparatus according to one of claims 1 to 4, characterized in that: the method comprises the following steps:
1) checking the air tightness of the device: opening the high-pressure gas cylinder, the pressure reducing valve and the valve in sequence, and filling the high-pressure gas into the experiment tank body to ensure that the high-pressure gas pressure is higher than the experiment design pressure; then closing the high-pressure gas cylinder, the pressure reducing valve and the valve, wherein the indication value change of the pressure gauge is within a preset range after 24 hours, which indicates that the device has good tightness, and if the indication value of the pressure gauge is restored to 0, the raw material belt needs to be replaced to seal the device again until the experimental tank achieves good tightness;
2) a sample preparation process: opening the upper cover, pouring the prepared slurry into the tank body, and ensuring that the distance between the slurry and the upper cover is kept to be more than 2 cm; then the upper cover is covered on the tank body tightly and sealed, and then the high-pressure gas cylinder, the pressure reducing valve and the valve are opened in sequence to charge the tank body, so that pressure is applied to the slurry; after the pressure reaches the design pressure, closing the high-pressure gas cylinder, the pressure reducing valve and the valve, and standing for 24 hours;
3) demolding: after the curing time is up, opening a valve to discharge the gas in the tank body, detaching the upper cover and the lower cover, and taking out the sample by using a stripper;
4) and (3) sample maintenance: putting the taken sample into a constant temperature box for maintaining again, setting the maintenance time according to the experimental scheme, and carrying out related performance test on the sample after the maintenance time is reached;
5) cleaning work: and after the test is finished, closing the valve and cleaning the residual slurry solids on the wall surface of the tank body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910945070.7A CN110646262A (en) | 2019-09-30 | 2019-09-30 | Grouting reinforcement material forming device under constraint condition and using method thereof |
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| CN201910945070.7A CN110646262A (en) | 2019-09-30 | 2019-09-30 | Grouting reinforcement material forming device under constraint condition and using method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018085A (en) * | 2012-12-11 | 2013-04-03 | 中南大学 | Method and device for preparing silty soil triaxial-test test sample |
| CN203101382U (en) * | 2013-02-06 | 2013-07-31 | 长沙理工大学 | Injecting paste material filter-pressing effect simulating device |
| CN105067221A (en) * | 2015-07-02 | 2015-11-18 | 山东大学 | Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor |
| CN105403444A (en) * | 2016-01-11 | 2016-03-16 | 西南石油大学 | Device and method for preparing well-cementing set cement sample under high temperature and high pressure environment |
| CN205679453U (en) * | 2016-06-15 | 2016-11-09 | 中国矿业大学 | Simple triaxial test clay mortar sample preparation device |
-
2019
- 2019-09-30 CN CN201910945070.7A patent/CN110646262A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018085A (en) * | 2012-12-11 | 2013-04-03 | 中南大学 | Method and device for preparing silty soil triaxial-test test sample |
| CN203101382U (en) * | 2013-02-06 | 2013-07-31 | 长沙理工大学 | Injecting paste material filter-pressing effect simulating device |
| CN105067221A (en) * | 2015-07-02 | 2015-11-18 | 山东大学 | Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor |
| CN105403444A (en) * | 2016-01-11 | 2016-03-16 | 西南石油大学 | Device and method for preparing well-cementing set cement sample under high temperature and high pressure environment |
| CN205679453U (en) * | 2016-06-15 | 2016-11-09 | 中国矿业大学 | Simple triaxial test clay mortar sample preparation device |
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