CN102967424B - Sealing performance simulated test device of filling wall on side of gob-side entry retaining roadway and test method of device - Google Patents
Sealing performance simulated test device of filling wall on side of gob-side entry retaining roadway and test method of device Download PDFInfo
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- CN102967424B CN102967424B CN201210516367.XA CN201210516367A CN102967424B CN 102967424 B CN102967424 B CN 102967424B CN 201210516367 A CN201210516367 A CN 201210516367A CN 102967424 B CN102967424 B CN 102967424B
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- ring flange
- uncovered casing
- wall
- uncovered
- filled wall
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Abstract
The invention discloses a sealing performance simulated test device of a filling wall on the side of a gob-side entry retaining roadway and a test method of the device. A filling wall simulation body is arranged in an opening box body for charging, and the opening box body and the filling wall simulation body ensure the airtightness. The test method comprises the following steps of connecting pressure gas with a compressed air inlet of the opening box body, charging the pressure gas into the opening box body, observing the change of a pressure gauge, judging that the sealing performance of the filling wall constructed by a filling material is excellent if the pressure gauge keeps constant pressure; and otherwise, judging that the sealing performance of the filling wall constructed by the filling material is poor. According to the sealing performance simulated test device of the filling wall on the side of the gob-side entry retaining roadway and the test method of the device, disclosed by the invention, a problem of sealing performance detection of the filling wall on the side of the gob-side entry retaining roadway underground a coal mine is solved, and the sealing performance of the filling wall is evaluated through a simulation test of a laboratory.
Description
Technical field
The present invention relates to simulation test technology, relate in particular to gob-side entry retaining roadside packing body of wall closed performance measuring technology.
Background technology
At present, coal body loss in process of production, in order to reclaim to greatest extent resource, is avoided in colliery, has adopted edge air gallery technology, stays to reclaim in traditional mining mode the safety pillar of establishing.Edge air gallery technology need to be set up filled wall along goaf one side and carry out supported laneway, and the material of filled wall is mainly taking inorganic and organic material composite material as main.
Press Strata Behavior, applicable elements, Reasonable Support form and New Supporting material etc. all to carry out large quantity research to the ore deposit of gob-side entry retaining at present, but the airtight performance to filled wall, the effect in isolated goaf still do not have good method of testing at scene, down-hole, therefore cannot evaluate the leakproofness of filled wall.
Summary of the invention
The object of the invention is the leakproofness in order to evaluate filled wall, a kind of gob-side entry retaining roadside packing body of wall closed performance analog detection method is proposed, and the device for the method is proposed, by laboratory simulation test, the leakproofness of filled wall is made an appraisal.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of gob-side entry retaining roadside packing body of wall closed performance analog detection method, as follows:
The first step, makes the uncovered casing of an inflation use, and the upper pressure gas entrance of uncovered casing rear portion processing and pressure gauge connection, install tensimeter on pressure gauge connection, and the uncovered edge joint weld of uncovered casing connects ring flange;
Second step, the box mould of making simulation filled wall;
Can block the baffle plate at base body die two ends with grooved base body die of steel plate processing and two; The size of base body die need meet and packs in uncovered casing, ensures that rear portion leaves certain interval after packing into; The upper ring flange matching with uncovered casing ring flange of one end welding of base body die;
The 3rd step, makes filled wall analogue body
Baffle plate is kept off at base body die two ends, form the box mould of a uncovered, body of wall compaction material is inserted in box mould, after solidifying, remove the baffle plate at two ends, become the filled wall analogue body that simulation test is used;
The 3rd step, is positioned over filled wall analogue body in uncovered casing, both ring flange is closed right, inserts rubber washer between ring flange, by fastening ring flange tight, ensures impermeability with bolt;
The 4th step, receives pressed gas on the pressure gas entrance of uncovered casing, passes into the gas of certain pressure, the variation of observed pressure table, as tensimeter keeps constant voltage, illustrate that the filled wall closed performance of building with this compaction material is good, otherwise illustrate that filled wall closed performance is poor.
In the time that needs tests adds the filled wall closed performance after load, first filled wall analogue body top is applied after certain load, then be placed in uncovered casing and test.
In order to implement the present invention, then simulating test device is described below:
A kind of gob-side entry retaining roadside packing body of wall closed performance simulating test device, it comprises uncovered casing and the filled wall analogue body of an inflation use; Above-mentioned uncovered casing rear portion is provided with pressure gas entrance and pressure gauge connection, and tensimeter is installed on pressure gauge connection, and the uncovered edge joint weld of uncovered casing is connected to ring flange; Above-mentioned filled wall analogue body is to have built body of wall compaction material in a grooved base body die, the upper ring flange matching with uncovered casing ring flange of one end welding of grooved base body die; Filled wall analogue body embeds in uncovered casing, both ring flanges is closed together, and between ring flange, insert rubber washer, uses bolt tightening.
For the ease of test, below this device, be provided with support.
Gob-side entry retaining roadside packing body of wall closed performance tests test method of the present invention, has solved the closed performance test problems of backfill for underground gob-side entry retaining of coal mine roadside packing body of wall, by laboratory simulation test, the leakproofness of filled wall is made an appraisal.Apparatus structure compactness of the present invention, simple to operate, be easy to safeguard, use reliable, method of testing is simply credible, has practicality widely in coal mine gob-side entry retaining roadside packing body of wall closed performance context of detection.
Brief description of the drawings
Fig. 1 is front view of the present invention;
Fig. 2 is the uncovered casing stereographic map of the present invention;
Fig. 3 is grooved base body die stereographic map of the present invention.
Marginal data, the uncovered casing of 1-, 2-tensimeter, 3-pressure gas entrance, 4-body of wall compaction material, 5-grooved base body die, 6-grooved base body die ring flange, the uncovered casing ring flange of 7-, 8-rubber washer, 9-support.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further.
As shown in Figure 1, a kind of gob-side entry retaining roadside packing body of wall closed performance analog detection method, as follows:
The first step, as shown in Figure 2, make the uncovered casing 1 of an inflation use, uncovered casing 1 rear portion processing connects upper pressure gas entrance 3 and tensimeter 2 interfaces, on tensimeter 2 interfaces, install tensimeter 2, the uncovered edge joint weld of uncovered casing 1 connects uncovered casing ring flange 7;
Second step, the box mould of making simulation filled wall;
As Fig. 3, with a grooved base body die 5 of steel plate processing, and two baffle plates that can block base body die two ends; The size of grooved base body die 5 need meet and packs in uncovered casing 1, ensures that rear portion leaves certain interval after packing into; The upper grooved base body die ring flange 6 matching with uncovered casing ring flange 7 of one end welding of grooved base body die 5;
The 3rd step, makes filled wall analogue body
Baffle plate is kept off at grooved base body die 5 two ends, form the box mould of a uncovered, body of wall compaction material 4 is inserted in box mould, after solidifying, remove the baffle plate at two ends, become the filled wall analogue body that simulation test is used;
The 3rd step, filled wall analogue body is embedded in uncovered casing 1, both ring flange is closed right, between grooved base body die ring flange 6 and uncovered casing ring flange 7, insert rubber washer 8, by fastening tight to grooved base body die ring flange 6 and uncovered casing ring flange 7, ensure impermeability with bolt;
The 4th step, receives pressed gas on the pressure gas entrance 3 of uncovered casing 1, passes into the gas of certain pressure, the variation of observed pressure table 2, as tensimeter 2 keeps constant voltage, illustrate that the filled wall closed performance of building with this compaction material is good, otherwise illustrate that filled wall closed performance is poor.
In the time that needs tests adds the filled wall closed performance after load, first filled wall analogue body top is applied after certain load, then be placed in uncovered casing 1 and test.
The apparatus structure of implementing analog detection method of the present invention is described below:
As shown in Figure 1, a kind of gob-side entry retaining roadside packing body of wall closed performance simulating test device, it comprises uncovered casing 1 and the filled wall analogue body of an inflation use; Above-mentioned uncovered casing 1 rear portion is provided with pressure gas entrance 3 and tensimeter 2 interfaces, on tensimeter 2 interfaces, tensimeter 2 is installed, and the uncovered edge joint weld of uncovered casing 1 is connected to ring flange 7, as shown in Figure 2; Above-mentioned filled wall analogue body is to have built body of wall compaction material 4 in a grooved base body die 5, the upper grooved base body die ring flange 6 matching with uncovered casing ring flange 7 of one end welding of grooved base body die 5; Filled wall analogue body embeds in uncovered casing 1, both ring flanges is closed together, and between ring flange, insert rubber washer 8, uses bolt tightening.
In order to ensure that between uncovered casing 1 and filled wall analogue body, certain gas-filled gap is left at rear portion, the bottom surface length of grooved base body die 5 is less than the bottom surface length of uncovered casing 1.
For the ease of test, below this device, be provided with support 9.
Claims (3)
1. a gob-side entry retaining roadside packing body of wall closed performance analog detection method, is characterized in that, step is as follows:
The first step, makes the uncovered casing of an inflation use, and the upper pressure gas entrance of uncovered casing rear portion processing and pressure gauge connection, install tensimeter on pressure gauge connection, and the uncovered edge joint weld of uncovered casing connects ring flange;
Second step, the box mould of making simulation filled wall
Can block the baffle plate at grooved base body die two ends with grooved base body die of steel plate processing and two; The size of grooved base body die need meet and packs in uncovered casing, ensures that rear portion leaves certain interval after packing into; The upper ring flange matching with uncovered casing ring flange of one end welding of grooved base body die;
The 3rd step, makes filled wall analogue body
Baffle plate is kept off at grooved base body die two ends, form the box mould of a uncovered, body of wall compaction material is inserted in box mould, after solidifying, remove the baffle plate at two ends, become the filled wall analogue body that simulation test is used;
The 3rd step, is positioned over filled wall analogue body in uncovered casing, both ring flange is closed right, inserts rubber washer between ring flange, by fastening ring flange tight, ensures impermeability with bolt;
The 4th step, receives pressed gas on the pressure gas entrance of uncovered casing, passes into the gas with pressure, the variation of observed pressure table, as tensimeter keeps constant voltage, illustrate that the filled wall closed performance of building with this body of wall compaction material is good, otherwise illustrate that filled wall closed performance is poor;
In the time that needs tests adds the filled wall closed performance after load, first filled wall analogue body top is applied after certain load, then be placed in uncovered casing and test.
2. a gob-side entry retaining roadside packing body of wall closed performance simulating test device, is characterized in that, it comprises uncovered casing and the filled wall analogue body of an inflation use; Above-mentioned uncovered casing rear portion is provided with pressure gas entrance and pressure gauge connection, and tensimeter is installed on pressure gauge connection, and the uncovered edge joint weld of uncovered casing is connected to ring flange; Above-mentioned filled wall analogue body is to have built body of wall compaction material in a grooved base body die, the upper ring flange matching with uncovered casing ring flange of one end welding of grooved base body die; Filled wall analogue body embeds in uncovered casing, both ring flanges is closed together, and between ring flange, insert rubber washer, uses bolt tightening.
3. simulating test device as claimed in claim 2, is characterized in that, below this device, is provided with support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210516367.XA CN102967424B (en) | 2012-12-05 | 2012-12-05 | Sealing performance simulated test device of filling wall on side of gob-side entry retaining roadway and test method of device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210516367.XA CN102967424B (en) | 2012-12-05 | 2012-12-05 | Sealing performance simulated test device of filling wall on side of gob-side entry retaining roadway and test method of device |
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| Publication Number | Publication Date |
|---|---|
| CN102967424A CN102967424A (en) | 2013-03-13 |
| CN102967424B true CN102967424B (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210516367.XA Expired - Fee Related CN102967424B (en) | 2012-12-05 | 2012-12-05 | Sealing performance simulated test device of filling wall on side of gob-side entry retaining roadway and test method of device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108303514B (en) * | 2018-01-30 | 2019-10-11 | 清华大学 | It is a kind of for simulating the experimental rig of coal mine underground enclosure space |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62298740A (en) * | 1986-06-18 | 1987-12-25 | Nippon Sheet Glass Co Ltd | Performance tester for construction outer wall or the like |
| CN1971235A (en) * | 2005-11-25 | 2007-05-30 | 上海市建筑科学研究院有限公司 | Physical three-property detection system for building curtain wall |
| CN201540189U (en) * | 2009-11-24 | 2010-08-04 | 河南省基本建设工程质量检测站 | Intelligent detection equipment for civil-defence-engineering sealed door |
| CN202132071U (en) * | 2011-07-11 | 2012-02-01 | 山东科技大学 | Filling and sealing mould for roadway slope expansion for pillarless mining for fully mechanized sublevel caving face |
| CN102661169A (en) * | 2012-04-28 | 2012-09-12 | 山东科技大学 | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars |
| CN202916057U (en) * | 2012-12-05 | 2013-05-01 | 山东科技大学 | A sealing performance simulation testing device of a filing wall beside a lane in gob-side entry retaining technology |
-
2012
- 2012-12-05 CN CN201210516367.XA patent/CN102967424B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62298740A (en) * | 1986-06-18 | 1987-12-25 | Nippon Sheet Glass Co Ltd | Performance tester for construction outer wall or the like |
| CN1971235A (en) * | 2005-11-25 | 2007-05-30 | 上海市建筑科学研究院有限公司 | Physical three-property detection system for building curtain wall |
| CN201540189U (en) * | 2009-11-24 | 2010-08-04 | 河南省基本建设工程质量检测站 | Intelligent detection equipment for civil-defence-engineering sealed door |
| CN202132071U (en) * | 2011-07-11 | 2012-02-01 | 山东科技大学 | Filling and sealing mould for roadway slope expansion for pillarless mining for fully mechanized sublevel caving face |
| CN102661169A (en) * | 2012-04-28 | 2012-09-12 | 山东科技大学 | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars |
| CN202916057U (en) * | 2012-12-05 | 2013-05-01 | 山东科技大学 | A sealing performance simulation testing device of a filing wall beside a lane in gob-side entry retaining technology |
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| CN102967424A (en) | 2013-03-13 |
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Granted publication date: 20140924 Termination date: 20181205 |