CN104007250A - Visual tri-axial seepage device - Google Patents
Visual tri-axial seepage device Download PDFInfo
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- CN104007250A CN104007250A CN201410269471.2A CN201410269471A CN104007250A CN 104007250 A CN104007250 A CN 104007250A CN 201410269471 A CN201410269471 A CN 201410269471A CN 104007250 A CN104007250 A CN 104007250A
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Abstract
The invention discloses a visual tri-axial seepage experimental device. A top plate and a base are connected together through bolts arranged vertically in a penetrating mode. Cylindrical propylene glass is arranged between the top plate and the base. A loading rod is vertically arranged in the top plate in a penetrating mode, the lower end of the loading rod stretches into the propylene glass, and the upper end of the loading rod stretches out of the top plate to be connected with a pressure device. A liquid charging and discharging pipeline is arranged in the base, the upper end of the liquid charging and discharging pipeline is communicated with the inner portion of the propylene glass, and the lower end of the liquid charging and discharging pipeline is communicated with a hydraulic system. An air inflation pipe and an air outlet pipe are further arranged in the base, one end of the air inflation pipe and one end of the air outlet pipe both stretch into the propylene glass, the other end of the air inflation pipe is connected with a high-pressure gas cylinder outside the base and the other end of the air outlet pipe is connected with a flow testing device outside the base. By means of the visual tri-axial seepage device, the dynamic destruction process of coal rock in the tri-axial state during gas seepage can be visually observed and recorded and meanwhile, the visual tri-axial seepage device further has the advantages of being high in observation precision, simple in structure, high in suitability and the like.
Description
Technical field
The present invention relates to a kind of experimental provision, particularly relate to the visual experimental apparatus of a kind of coal petrography flow event deformation failure under three Spindle Status.
Background technology
Coal and Gas Outburst are a kind of very complicated mine motive force phenomenons often running in coal production, and its explosion time is short, unpredictability and infringement is large etc. that feature has a strong impact on that colliery is efficient, the sound development of safety in production and coal industry.Since having for the first time in the world the coal and gas burst accident of record, domestic and international numerous scholars have dropped into extensive work to the research of coal and gas outburst mechanism, what comparatively generally admit at present is the coefficient combined action hypothesis of terrestrial stress, gas and coal petrography physico-mechanical properties three, thinks that coal and Gas Outburst are the coefficient results that intercouples between terrestrial stress, gas and coal petrography physico-mechanical properties.Gas permeation rate is the physical parameter that coal petrography infiltration gas capacity of water is measured, and is also the important parameter of coal seam with gas porous medium fluid mechanics.Coal-bed gas permeability under triaxial pressure effect with the Evolution research of coal body destructive process to getting coal clear and Gas Outburst gas migration evolution mechanism has important guiding effect.
At present, existing equipment is single at the observation method of test coal petrography coal petrography physico-mechanical properties, gas seepage flow flow reflection coal body physical parameter and side light coal petrography state procedure under terrestrial stress effect or terrestrial stress, gas acting in conjunction, cannot intuitively observe coal and rock gas flow event destroy form under effect of stress.Generally speaking, also lack at present a kind of visual experimental apparatus effectively reliably, intuitively observe under the stress seepage effects such as coal containing methane gas rock single shaft, three axles and destroy form.
Therefore those skilled in the art are devoted to develop the visual gas seepage experimental apparatus of a kind of coal petrography under three Spindle Status.
Summary of the invention
In view of the above-mentioned defect of prior art, technical matters to be solved by this invention is to provide the visual gas seepage experimental apparatus of coal petrography under three Spindle Status.
For achieving the above object, the invention provides a kind of visual three axle seepage apparatus, comprise the top board (1) and the base (2) that be arranged in parallel up and down, described top board (1) and base (2) link together by the bolt (3) vertically wearing, between this top board (1) and base (2), be provided with acrylic glass cylindraceous (4), and the two ends up and down of this acrylic glass (4) are respectively by top board (1) and base (2) sealing, in described top board (1), be vertically equipped with load bar (5), the lower end of this load bar (5) extend in acrylic glass (4), upper end is stretched out top board (1) top and is connected with pressure apparatus (18), the lower end of described load bar (5) is connected with pressure head (12), in this pressure head (12), be provided with upper gas passage (12a), one end of described upper gas passage (12a) is opened in the bottom of pressure head (12), the other end is opened in the side of pressure head (12), in described top board (1), be provided with vent port (6), the upper end of this vent port (6) and top board (1) exterior, and sealed by switch valve (22), the lower end of vent port (6) communicates with acrylic glass (4) inside, in described base (2), be provided with and fill drain line (21), this upper end of filling drain line (21) communicates with acrylic glass (4) inside, the lower end of filling drain line (21) communicates with hydraulic system interface (7), described base (2) upper surface is provided with groove, in groove, be placed with cushion block (11), this cushion block (11) is positioned at acrylic glass (4), in described cushion block (11), offer lower gas passage (11a), one end of described lower gas passage (11a) is opened in the top of cushion block (11), the other end is opened in the side of cushion block (11), in described base (2), be also provided with gas-filled tube (8) and escape pipe (9), one end of this gas-filled tube (8) extend in acrylic glass (4) and communicates with the upper gas passage (12a) in pressure head (12), other end protuberate basic unit (2) is outside equipped with gas cylinder interface (20), one end of escape pipe (9) extend in acrylic glass (4) and communicates with the lower gas passage (11a) in cushion block (11), other end protuberate basic unit (2) is outside equipped with flow testing device interface (10).
When the experimental provision of use said structure is tested, first take off top board, test specimen is placed on the cushion block in acrylic glass, then cover top board, with bolt, top board and base are fixed, open switch valve, then gas-filled tube and gas outlet are vacuumized after processing by hydraulic system acrylic glass topping up force feed, for experiment test specimen provides certain confined pressure, in the time of oil-filled, the gas of acrylic glass inside is discharged by vent port, after acrylic glass inner space is full of by hydraulic oil, closing switch valve.Finally by gas cylinder, gas-filled tube is filled with to certain pressure methane gas, methane gas enters in the upper gas passage in pressure head by gas-filled tube, then from the downward seepage flow in top of test specimen, discharges successively from lower gas passage and gas outlet.Until methane gas be filled with and discharge reaches after balance, pressure apparatus loading load bar by top board top provides axle pressure to experiment test specimen, thereby form stressed to three axles of test specimen, at the same time, by flow testing device, record gas seepage flow flow, by transparent acrylic glass, can intuitively observe the dynamic failure feature of coal petrography gas flow event simultaneously.
The lower end of described upper gas passage (12a) is provided with honeycomb-like pores (13), Open Side Down for this honeycomb-like pores (13), in the upper end of lower gas passage (11a), be also provided with the honeycomb-like pores (13) of same structure, the opening upwards of this honeycomb-like pores (13).Honeycomb-like pores can be methane gas can be uniformly from test specimen inside seepage flow from top to bottom.
Described acrylic glass (4) is also provided with the transparent heat draw (15), this transparent heat draw (15) is arranged between pressure head (12) and cushion block (11), and the two ends up and down of this transparent heat draw (15) are enclosed within respectively pressure head (12) lower end and cushion block (11) upper end.During experiment, first test specimen surrounded surface is evenly smeared to transparent silica gel, after transparent silica gel is naturally dry at ambient temperature, test specimen is nested in the transparent heat draw, with blower fan, heat-shrink tube is heated, make it be close to test specimen surface, then the two ends up and down of the transparent heat draw are enclosed within respectively to pressure head lower end and cushion block upper end.When this structure can guarantee test specimen confined pressure, outside hydraulic pressure gas can not oozed as arrived test specimen internal influence measuring accuracy.
Between the upper and lower section of described acrylic glass (4) and top board (1) and base (2), be furnished with O-ring seal (16), on the surface of contact of described load bar (5) and top board (1), be also provided with O-ring seal (16).
In order to record the dynamic failure process of coal petrography gas flow event, described acrylic glass (4) arranged outside has three video cameras (17), and three video cameras (17) are all aimed at acrylic glass (4) center, and are triangularly arranged.
The lower end of described vent port (6) is lower large little triangle, and vent port can facilitate acrylic glass internal gas to converge and discharge.
The invention has the beneficial effects as follows: the present invention can observe and record coal petrography dynamic failure process during gas seepage flow under three Spindle Status intuitively, also has the features such as accuracy of observation is high, simple in structure, suitability is strong simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of pressure head.
Fig. 4 is the upward view of Fig. 3.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, comprise top board 1, base 2, bolt 3, acrylic glass 4, load bar 5, vent port 6, hydraulic system interface 7, gas-filled tube 8, escape pipe 9, flow testing device interface 10, cushion block 11, pressure head 12, honeycomb-like pores 13, the transparent heat draw 15, O-ring seal 16, video camera 17, pressure apparatus 18, gas cylinder interface 20, fill the parts such as drain line 21 and switch valve 22, described top board 1 and base 2 link together by the bolt 3 vertically wearing, between this top board 1 and base 2, be provided with acrylic glass 4 cylindraceous, and the two ends up and down of this acrylic glass 4 are respectively by top board 1 and base 2 sealings.The interior load bar 5 that is vertically equipped with of described top board 1, the lower end of this load bar 5 extend in acrylic glass 4, upper end is stretched out top board 1 top and is connected with pressure apparatus 18, the lower end of described load bar 5 is connected with pressure head 12, in this pressure head 12, be provided with upper gas passage 12a, the lower end of described upper gas passage 12a is opened in the bottom of pressure head 12, and upper end is opened in the side of pressure head 12, and the lower end at upper gas passage 12a is provided with honeycomb-like pores 13, Open Side Down for this honeycomb-like pores 13.In described top board 1, be provided with vent port 6, the upper end of this vent port 6 and top board 1 exterior, and sealed by switch valve 22, the lower end of vent port 6 communicates with acrylic glass 4 inside, and the lower end of vent port 6 is lower large little triangle.In described base 2, be provided with and fill drain line 21, this upper end of filling drain line 21 communicates with acrylic glass 4 inside, the lower end of filling drain line 21 communicates with hydraulic system interface 7, described base 2 upper surfaces are provided with groove, in groove, be placed with cushion block 11, this cushion block 11 is positioned at acrylic glass 4, in described cushion block 11, offer lower gas passage 11a, one end of described lower gas passage 11a is opened in the top of cushion block 11, the other end is opened in the side of cushion block 11, upper end at lower gas passage 11a also arranges honeycomb-like pores 13, the opening upwards of this honeycomb-like pores 13.In described base 2, be also provided with gas-filled tube 8 and escape pipe 9, one end of this gas-filled tube 8 extend in acrylic glass 4 and communicates with the upper gas passage 12a in pressure head 12, other end protuberate basic unit 2 is outside equipped with gas cylinder interface 20, one end of escape pipe 9 extend in acrylic glass 4 and communicates with the lower gas passage 11a in cushion block 11, and other end protuberate basic unit 2 is outside equipped with flow testing device interface 10.
From Fig. 1 further, in described acrylic glass 4, be also provided with the transparent heat draw 15, this transparent heat draw 15 is arranged between pressure head 12 and cushion block 11, and the two ends up and down of this transparent heat draw 15 are enclosed within respectively pressure head 12 lower ends and cushion block 11 upper ends.
As shown in Figure 1, described acrylic glass is furnished with O-ring seal 16 between section and top board 1 and base 2 Shang Xia 4, on the surface of contact of described load bar 5 and top board 1, is also provided with O-ring seal 16.
Described acrylic glass 4 arranged outside have 17, three video cameras 17 of three video cameras all to aim at acrylic glass 4 centers as shown in Figure 1, and are triangularly arranged.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technician in the art, all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (6)
1. visual three axle seepage apparatus, it is characterized in that: comprise the top board (1) and the base (2) that be arranged in parallel up and down, described top board (1) and base (2) link together by the bolt (3) vertically wearing, between this top board (1) and base (2), be provided with acrylic glass cylindraceous (4), and the two ends up and down of this acrylic glass (4) are respectively by top board (1) and base (2) sealing, in described top board (1), be vertically equipped with load bar (5), the lower end of this load bar (5) extend in acrylic glass (4), upper end is stretched out top board (1) top and is connected with pressure apparatus (18), the lower end of described load bar (5) is connected with pressure head (12), in this pressure head (12), be provided with upper gas passage (12a), one end of described upper gas passage (12a) is opened in the bottom of pressure head (12), the other end is opened in the side of pressure head (12), in described top board (1), be provided with vent port (6), the upper end of this vent port (6) and top board (1) exterior, and sealed by switch valve (22), the lower end of vent port (6) communicates with acrylic glass (4) inside, in described base (2), be provided with and fill drain line (21), this upper end of filling drain line (21) communicates with acrylic glass (4) inside, the lower end of filling drain line (21) communicates with hydraulic system interface (7), described base (2) upper surface is provided with groove, in groove, be placed with cushion block (11), this cushion block (11) is positioned at acrylic glass (4), in described cushion block (11), offer lower gas passage (11a), one end of described lower gas passage (11a) is opened in the top of cushion block (11), the other end is opened in the side of cushion block (11), in described base (2), be also provided with gas-filled tube (8) and escape pipe (9), one end of this gas-filled tube (8) extend in acrylic glass (4) and communicates with the upper gas passage (12a) in pressure head (12), other end protuberate basic unit (2) is outside equipped with gas cylinder interface (20), one end of escape pipe (9) extend in acrylic glass (4) and communicates with the lower gas passage (11a) in cushion block (11), other end protuberate basic unit (2) is outside equipped with flow testing device interface (10).
2. visual three axle seepage experimental apparatus as claimed in claim 1, it is characterized in that: the lower end of described upper gas passage (12a) is provided with honeycomb-like pores (13), Open Side Down for this honeycomb-like pores (13), in the upper end of lower gas passage (11a), be also provided with the honeycomb-like pores (13) of same structure, the opening upwards of this honeycomb-like pores (13).
3. visual three axle seepage experimental apparatus as claimed in claim 1, it is characterized in that: in described acrylic glass (4), be also provided with the transparent heat draw (15), this transparent heat draw (15) is arranged between pressure head (12) and cushion block (11), and the upper/lower terminal of this transparent heat draw (15) is enclosed within respectively pressure head (12) lower end and cushion block (11) upper end.
4. visual three axle seepage experimental apparatus as claimed in claim 1, it is characterized in that: between the upper and lower section of described acrylic glass (4) and top board (1) and base (2), be furnished with O-ring seal (16), on the surface of contact of described load bar (5) and top board (1), be also provided with O-ring seal (16).
5. visual three axle seepage experimental apparatus as claimed in claim 1, it is characterized in that: described acrylic glass (4) arranged outside has three video cameras (17), three video cameras (17) are all aimed at acrylic glass (4) center, and are triangularly arranged.
6. visual three axle seepage experimental apparatus as claimed in claim 1, is characterized in that: the lower end of described vent port (6) is lower large little triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269471.2A CN104007250A (en) | 2014-06-17 | 2014-06-17 | Visual tri-axial seepage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269471.2A CN104007250A (en) | 2014-06-17 | 2014-06-17 | Visual tri-axial seepage device |
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| CN104007250A true CN104007250A (en) | 2014-08-27 |
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| CN201410269471.2A Pending CN104007250A (en) | 2014-06-17 | 2014-06-17 | Visual tri-axial seepage device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104597950A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Control device, servo tester system and control method for achieving stress return |
| CN104596861A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Visual tri-axial testing machine |
| CN104596841A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Visual triaxial pressure chamber structure and image processing method |
| CN104749025A (en) * | 2015-04-16 | 2015-07-01 | 煤炭科学技术研究院有限公司 | Macro-micro three-axis visual pressure chamber for coal and rock |
| CN106959263A (en) * | 2017-02-28 | 2017-07-18 | 河南工程学院 | One kind carrying cleat in coal observation and gas porous flow visual experimental apparatus |
| CN107192811A (en) * | 2017-05-05 | 2017-09-22 | 哈尔滨工业大学深圳研究生院 | A kind of latent erosion visual measuring device of level of large deformation totally-enclosed |
| CN108801577A (en) * | 2018-08-14 | 2018-11-13 | 同济大学 | A kind of experimental rig of simulation deep layer Tunnel explosion |
| CN110542614A (en) * | 2019-10-09 | 2019-12-06 | 中国矿业大学(北京) | True triaxial experiment device and method with CT real-time scanning based on water seepage |
| CN110542639A (en) * | 2019-10-09 | 2019-12-06 | 中国矿业大学(北京) | true triaxial gas seepage test device with CT real-time scanning and method |
| CN111693428A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Visual experimental device and method for measuring rock imbibition under stratum condition |
| CN112081575A (en) * | 2020-09-10 | 2020-12-15 | 西南石油大学 | Multi-field coupling coal bed gas well surrounding rock deformation visual simulation device and method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596841B (en) * | 2015-01-16 | 2017-08-08 | 重庆大学 | A kind of processing method for the collection image for visualizing triaxial pressure cell structure |
| CN104596861A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Visual tri-axial testing machine |
| CN104596841A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Visual triaxial pressure chamber structure and image processing method |
| CN104596861B (en) * | 2015-01-16 | 2017-02-22 | 重庆大学 | Visual tri-axial testing machine |
| CN104597950A (en) * | 2015-01-16 | 2015-05-06 | 重庆大学 | Control device, servo tester system and control method for achieving stress return |
| CN104749025A (en) * | 2015-04-16 | 2015-07-01 | 煤炭科学技术研究院有限公司 | Macro-micro three-axis visual pressure chamber for coal and rock |
| CN106959263B (en) * | 2017-02-28 | 2018-04-20 | 河南工程学院 | One kind carrying cleat in coal observation and gas porous flow visual experimental apparatus |
| CN106959263A (en) * | 2017-02-28 | 2017-07-18 | 河南工程学院 | One kind carrying cleat in coal observation and gas porous flow visual experimental apparatus |
| CN107192811A (en) * | 2017-05-05 | 2017-09-22 | 哈尔滨工业大学深圳研究生院 | A kind of latent erosion visual measuring device of level of large deformation totally-enclosed |
| CN107192811B (en) * | 2017-05-05 | 2019-11-15 | 哈尔滨工业大学深圳研究生院 | A kind of latent erosion visual measuring device of the level of large deformation totally-enclosed |
| CN108801577A (en) * | 2018-08-14 | 2018-11-13 | 同济大学 | A kind of experimental rig of simulation deep layer Tunnel explosion |
| CN111693428A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Visual experimental device and method for measuring rock imbibition under stratum condition |
| CN110542614A (en) * | 2019-10-09 | 2019-12-06 | 中国矿业大学(北京) | True triaxial experiment device and method with CT real-time scanning based on water seepage |
| CN110542639A (en) * | 2019-10-09 | 2019-12-06 | 中国矿业大学(北京) | true triaxial gas seepage test device with CT real-time scanning and method |
| CN112081575A (en) * | 2020-09-10 | 2020-12-15 | 西南石油大学 | Multi-field coupling coal bed gas well surrounding rock deformation visual simulation device and method |
| CN112081575B (en) * | 2020-09-10 | 2022-09-13 | 西南石油大学 | Multi-field coupling coal bed gas well surrounding rock deformation visual simulation device and method |
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