CN203455263U - Gas permeation experiment device under complex conditions - Google Patents
Gas permeation experiment device under complex conditions Download PDFInfo
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- CN203455263U CN203455263U CN201320577729.6U CN201320577729U CN203455263U CN 203455263 U CN203455263 U CN 203455263U CN 201320577729 U CN201320577729 U CN 201320577729U CN 203455263 U CN203455263 U CN 203455263U
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Abstract
The utility model discloses a gas permeation experiment device under complex conditions. The gas permeation experiment device under complex conditions is characterized by comprising a sealed loading box, a permeation test piece, a loading device, an oil pressure sealing system, a gas supply system and a gas balance system. According to the gas permeation experiment device under complex conditions disclosed by the utility model, the permeation test piece is loaded by the loading device to be in a predetermined stress state; a rectangular frame, a force-transferring column, a side baffle and the outer side surface of the permeation test piece form a first pressure cavity, and the side baffle and the inner side surface of the permeation test piece form a second pressure cavity under the assistance of the oil pressure sealing system; gas in the first pressure cavity gradually permeates in the second pressure cavity under the action of a gas pressure difference, thus researching the permeation rule of gas around a hole. According to the gas permeation experiment device under complex conditions disclosed by the utility model, a coal-rock mass is in a stress state similar to that under the field condition, and the influence of the breakage condition of the coal-rock mass around the hole on the permeation rule can be researched, so that the gas permeation experiment device under complex conditions has important significance for research on the permeation rule, adsorption rule and analysis rule of gas in the coal-rock mass around a roadway under complex conditions.
Description
Technical field
The utility model relates to the research of gas Percolation Law in coal seam in process of coal mining, relates in particular to a kind of complex condition gas permeation experimental provision.
Background technology
The stress of coal and rock, strain regime and cranny development rule have the impact of highly significant on its perviousness.Such as, after heading digging, original stress-strain state is broken, and excavation space produces obvious stress around and concentrates.Surrouding rock stress is concentrated and both can have been made a part of preexisting crack closed, can bring out again the how new ，Xin crack, crack of generation constantly expansion can make coal body more broken, in tunnel, form relaxation zone around.Under the impact of relaxation zone, the gas around tunnel in coal body overflows in a large number, very easily causes tunnel gas to exceed standard, and causes gas explosion accident.
Because the complicacy of rule is overflowed in tunnel gas permeation around, in project engineering stage, cannot carry out a large amount of site tests and test, be necessary to test the factors such as coal mass strength and perviousness, gas pressure, pressure from surrounding rock and excavation size are carried out to deep research by system simulation, each factor of quantitative test affect rule.
Also be not specifically designed at present the research tunnel experimental provision of coal gas Percolation Law around, and conventional gas permeation rate proving installation, no matter be three axles or single shaft, be all test specimen is processed into cylindrical or cube shaped, by loading, make under its stress state in homogeneous, and then test its permeability, and can only simulate uniform stress field, all fail to consider that stress that roadway excavation causes is concentrated and the impact of complicated factor on Percolation Law such as rock crusher.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, and a kind of complex condition gas permeation experimental provision is provided.
For achieving the above object, the utility model adopts following technical proposals:
A complex condition gas permeation experimental provision, is characterized in that comprising that sealing loads box, infiltration test specimen, charger, oil pressure sealing system, gas supply system and gas balanced system;
Described sealing loads box, mainly comprises rectangular frame, force-transmitting pole, loading cushion block and side shield; Described rectangular frame, a circular port is left in each side, and circular port surface is provided with rubber gasket; Described force-transmitting pole, through circular port, with circular port close contact, had both guaranteed that relative motion can occur for force-transmitting pole and rectangular frame, prevented again gas overflowing; Described loading cushion block, the surface contacting with test specimen is provided with the air slot intersecting in length and breadth; Described side shield, comprise the first side shield and the second side shield, be separately fixed at the both sides, front and back of rectangular frame, its inside surface contacts with coal sample test specimen, each side shield inside surface is reserved two rectangular channels, for accommodating O-ring seal, and on side shield reserved O-ring seal liquid injection port, on the second side shield, be also provided with gas filling orifice and gas portals;
Described infiltration test specimen, for rectangular structure, and in center, be provided with the perforated holes of similar roadway shape, infiltration test specimen front and back sides scribbles 704 silicon rubber to guarantee its impermeability, and 704 silicon rubber outsides also scribble lubricant to reduce to permeate the friction force in test piece deformation process and between side shield;
Described oil pressure sealing system, comprises O-ring seal, hand-driven oil hydraulic pump, oil feed line and tensimeter; O-ring seal is ducted body, can inject the fluent meterial of transmission of pressure in ducted body, and O-ring seal is built compression molding by urethane rubber, is arranged in the reserved rectangular channel of side shield inside surface, according to pressure gauge reading, by hand-driven oil hydraulic pump, O-ring seal is pressurizeed;
Described charger, comprises framework reaction beam, load cylinder, hydraulic power unit and high-pressure oil pipe; Load cylinder is fixed on framework reaction beam, is loaded the force-transmitting pole of box and is loaded cushion block exert pressure to infiltration test specimen by sealing, and the effect of hydraulic power unit and high-pressure oil pipe is to be load cylinder fuel feeding;
Described gas supply system, comprises gas supply tank, the first high-voltage tube, the first valve, gas pressure pump, the second high-voltage tube, the second valve, the first tensimeter, first flow meter; Gas supply tank is connected by the first high-voltage tube with gas pressure pump, and is provided with the first valve on the first high-voltage tube; Gas pressure pump is connected by the second high-voltage tube with the gas filling orifice on cylindrical structure, and on the second high-voltage tube, be provided with the second valve, the first tensimeter and first flow meter;
Described gas equilibrium system, comprises the first escape pipe, the second flowmeter, the second tensimeter, the 3rd valve, vacuum pump, the second escape pipe, the 4th valve, gas storage tank; Sealing loads gas on box side shield portals and is connected by the first escape pipe with vacuum pump, and on the first escape pipe, be provided with the second flowmeter, the second tensimeter, the 3rd valve; Vacuum pump is connected by the second escape pipe with gas storage tank, and on the second escape pipe, is provided with the 4th valve.
In order to test more easily and data analysis, the utility model can also comprise Measurement and Control System; Described Measurement and Control System, mainly comprises computing machine, Main Control Tank, data collecting instrument; Computing machine is connected with Main Control Tank by USB interface, Main Control Tank is connected with data collecting instrument, vertical loading device, gas pressure pump and vacuum pump by wire, and data collecting instrument is connected with the second flowmeter by wire the first tensimeter, first flow meter, the second tensimeter.
Principle and advantage of the present utility model is:
The utility model loads infiltration test specimen by charger, makes it reach predetermined stress; Under oil pressure sealing system auxiliary, the lateral surface of rectangular frame, force-transmitting pole, side shield and infiltration test specimen forms the first pressure chamber, and the medial surface of side shield and infiltration test specimen forms the second pressure chamber; Under the poor effect of gas pressure, the gas in the first pressure chamber is gradually to the second pressure chamber infiltration, thereby research gas is at circular opening Percolation Law around.
Sealing described in the utility model loads box and exerts pressure by inside, and external structure forms the method for annular seal space, in conjunction with oil pressure sealing system, has solved in Motion loading process and has sealed difficult problem; The utility model can make the stress of coal and rock in similar field condition, can consider the hole impact of the broken situation of coal and rock on Percolation Law around; The utility model also has simple in structure, and the feature that experimentation cost is low, for the infiltration of gas in coal and rock around of complex condition tunnel, adsorb, analyse that to separate the research of rule significant.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Fig. 1 is mechanics principle figure of the present utility model;
Fig. 2 is agent structure schematic diagram of the present utility model.
Embodiment
By reference to the accompanying drawings 1 and 2, a kind of complex condition gas permeation experimental provision, is characterized in that comprising that sealing loads box, infiltration test specimen, charger, oil pressure sealing system, gas supply system, gas equilibrium system and Measurement and Control System.
Described sealing loads box, mainly comprises rectangular frame 1, force-transmitting pole 2, loads cushion block 3 and side shield 4; Described rectangular frame 1, a circular port is left in each side, and circular port surface is provided with rubber gasket; Described force-transmitting pole 2, through circular port, with circular port close contact, had both guaranteed that relative motion can occur for force-transmitting pole and rectangular frame, prevented again gas overflowing; Described loading cushion block 3, the surface contacting with test specimen is provided with the air slot intersecting in length and breadth; Described side shield 4, comprise the first side shield and the second side shield, be separately fixed at the both sides, front and back of rectangular frame, its inside surface contacts with coal sample test specimen, each side shield inside surface is reserved two rectangular channel 4a, for accommodating O-ring seal, and on side shield reserved O-ring seal liquid injection port, on the second side shield, be also provided with gas filling orifice 4b and the gas 4c that portals.
Described infiltration test specimen 5, for rectangular structure, and in center, be provided with the perforated holes of similar roadway shape, hole scope is less than the scope of less rectangular channel, infiltration test specimen front and back sides scribbles 704 silicon rubber to guarantee its impermeability, and 704 silicon rubber outsides also scribble lubricant to reduce to permeate the friction force in test piece deformation process and between side shield.
Described oil pressure sealing system, comprises O-ring seal, hand-driven oil hydraulic pump, oil feed line and tensimeter; O-ring seal is ducted body, can inject the fluent meterial of transmission of pressure in ducted body, and O-ring seal is built compression molding by urethane rubber, is arranged in the reserved rectangular channel of side shield inside surface, according to pressure gauge reading, by hand-driven oil hydraulic pump, O-ring seal is pressurizeed.
Described charger, comprises framework reaction beam 6, load cylinder 7, hydraulic power unit and high-pressure oil pipe; Load cylinder 6 is fixed on framework reaction beam, is loaded the force-transmitting pole 2 of box and is loaded cushion block 3 exert pressure to infiltration test specimen 5 by sealing, and the effect of hydraulic power unit and high-pressure oil pipe is to be load cylinder fuel feeding.
Described gas supply system, comprises gas supply tank, the first high-voltage tube, the first valve, gas pressure pump, the second high-voltage tube, the second valve, the first tensimeter, first flow meter; Gas supply tank is connected by the first high-voltage tube with gas pressure pump, and is provided with the first valve on the first high-voltage tube; Gas pressure pump is connected by the second high-voltage tube with the gas filling orifice on cylindrical structure, and on the second high-voltage tube, be provided with the second valve, the first tensimeter and first flow meter.
Described gas equilibrium system, comprises the first escape pipe, the second flowmeter, the second tensimeter, the 3rd valve, vacuum pump, the second escape pipe, the 4th valve, gas storage tank; Sealing loads gas on box side shield portals and is connected by the first escape pipe with vacuum pump, and on the first escape pipe, be provided with the second flowmeter, the second tensimeter, the 3rd valve; Vacuum pump is connected by the second escape pipe with gas storage tank, and on the second escape pipe, is provided with the 4th valve.
Described Measurement and Control System, mainly comprises computing machine, Main Control Tank, data collecting instrument; Computing machine is connected with Main Control Tank by USB interface, Main Control Tank is connected with data collecting instrument, vertical loading device, gas pressure pump and vacuum pump by wire, and data collecting instrument is connected with the second flowmeter by wire the first tensimeter, first flow meter, the second tensimeter.
The above embodiment, is a kind of of the more preferably concrete embodiment of the utility model, and the common variation that those skilled in the art carries out within the scope of technical solutions of the utility model and replacement all should be included in protection domain of the present utility model.
Claims (2)
1. a complex condition gas permeation experimental provision, is characterized in that: comprise that sealing loads box, infiltration test specimen, charger, oil pressure sealing system, gas supply system and gas balanced system;
Described sealing loads box, mainly comprises rectangular frame, force-transmitting pole, loading cushion block and side shield; Described rectangular frame, a circular port is left in each side, and circular port surface is provided with rubber gasket; Described force-transmitting pole is through circular port, with circular port close contact; Described loading cushion block, the surface contacting with test specimen is provided with the air slot intersecting in length and breadth; Described side shield, comprises the first side shield and the second side shield, is separately fixed at the both sides, front and back of rectangular frame, and each side shield inside surface is reserved two rectangular channels, is also provided with gas filling orifice and gas portals on the second side shield;
Described infiltration test specimen, is rectangular structure, and in center, is provided with the perforated holes of similar roadway shape, and infiltration test specimen front and back sides scribbles 704 silicon rubber, and 704 silicon rubber outsides also scribble lubricant;
Described oil pressure sealing system, comprises O-ring seal, hand-driven oil hydraulic pump, oil feed line and tensimeter; O-ring seal is ducted body, can inject the fluent meterial of transmission of pressure in ducted body, is arranged in the reserved rectangular channel of side shield inside surface;
Described charger, comprises framework reaction beam, load cylinder, hydraulic power unit and high-pressure oil pipe; Load cylinder is fixed on framework reaction beam, is loaded the force-transmitting pole of box and is loaded cushion block exert pressure to infiltration test specimen by sealing, and the effect of hydraulic power unit and high-pressure oil pipe is to be load cylinder fuel feeding;
Described gas supply system, comprises gas supply tank, the first high-voltage tube, the first valve, gas pressure pump, the second high-voltage tube, the second valve, the first tensimeter, first flow meter; Gas supply tank is connected by the first high-voltage tube with gas pressure pump, and is provided with the first valve on the first high-voltage tube; Gas pressure pump is connected by the second high-voltage tube with the gas filling orifice on cylindrical structure, and on the second high-voltage tube, be provided with the second valve, the first tensimeter and first flow meter;
Described gas equilibrium system, comprises the first escape pipe, the second flowmeter, the second tensimeter, the 3rd valve, vacuum pump, the second escape pipe, the 4th valve, gas storage tank; Sealing loads gas on box side shield portals and is connected by the first escape pipe with vacuum pump, and on the first escape pipe, be provided with the second flowmeter, the second tensimeter, the 3rd valve; Vacuum pump is connected by the second escape pipe with gas storage tank, and on the second escape pipe, is provided with the 4th valve.
2. a kind of complex condition gas permeation experimental provision according to claim 1, is characterized in that comprising Measurement and Control System; Described Measurement and Control System, mainly comprises computing machine, Main Control Tank, data collecting instrument; Computing machine is connected with Main Control Tank by USB interface, Main Control Tank is connected with data collecting instrument, vertical loading device, gas pressure pump and vacuum pump by wire, and data collecting instrument is connected with the second flowmeter by wire the first tensimeter, first flow meter, the second tensimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577729.6U CN203455263U (en) | 2013-09-18 | 2013-09-18 | Gas permeation experiment device under complex conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577729.6U CN203455263U (en) | 2013-09-18 | 2013-09-18 | Gas permeation experiment device under complex conditions |
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| CN203455263U true CN203455263U (en) | 2014-02-26 |
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| CN201320577729.6U Withdrawn - After Issue CN203455263U (en) | 2013-09-18 | 2013-09-18 | Gas permeation experiment device under complex conditions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471975A (en) * | 2013-09-18 | 2013-12-25 | 山东科技大学 | Experimental device for gas permeation under complex conditions |
| CN107339090A (en) * | 2017-03-28 | 2017-11-10 | 辽宁工程技术大学 | Liquid nitrogen fracturing drilling coal experimental provision |
-
2013
- 2013-09-18 CN CN201320577729.6U patent/CN203455263U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471975A (en) * | 2013-09-18 | 2013-12-25 | 山东科技大学 | Experimental device for gas permeation under complex conditions |
| CN107339090A (en) * | 2017-03-28 | 2017-11-10 | 辽宁工程技术大学 | Liquid nitrogen fracturing drilling coal experimental provision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |