CN103940719B - A kind of coal body Penetration Signature test macro and method - Google Patents

A kind of coal body Penetration Signature test macro and method Download PDF

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Publication number
CN103940719B
CN103940719B CN201410150520.0A CN201410150520A CN103940719B CN 103940719 B CN103940719 B CN 103940719B CN 201410150520 A CN201410150520 A CN 201410150520A CN 103940719 B CN103940719 B CN 103940719B
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China
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coal
confined pressure
head
piston
pressure liquid
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CN201410150520.0A
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Chinese (zh)
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CN103940719A (en
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张天军
任金虎
李树刚
于胜红
赵佩佩
宋爽
李伟
成小雨
崔巍
张磊
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西安科技大学
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Abstract

The invention discloses a kind of coal body Penetration Signature test macro, comprise electronic universal tester, Penetration Signature proving installation, vibration detection device, the first methane gas system, confined pressure hydraulic system and computing machine; Penetration Signature proving installation helps simulation mechanism and lane to help surrounding environment simulation mechanism to form by lane, and side simulation mechanism in lane comprises baffle plate, air permeable plate, coal petrography sample and U-shaped cutting ferrule; Side surrounding environment simulation mechanism in lane comprises base, cylinder barrel, push-down head, first concave surface pressure head, first convex surface pressure head and piston; First methane gas system comprises the first methane gas tank, the first reduction valve and the first rain glass; Confined pressure hydraulic system comprises confined pressure liquid case, hydraulic pump, retaining valve, confined pressure hydraulic coupling table and confined pressure liquid surplus valve; Present invention also offers a kind of coal body Penetration Signature method of testing.Axial compression of the present invention, confined pressure and methane gas pressure controllable, coal and rock and mine deep part coal and rock can be helped to test by the gas permeation property of disturbing influence to lane, measuring accuracy is high.

Description

A kind of coal body Penetration Signature test macro and method

Technical field

The invention belongs to the Penetration Signature studying technological domain of coal and rock, be specifically related to a kind of coal body Penetration Signature test macro and method.

Background technology

The basis of mine generation coal and gas prominent and gushing water when the Penetration Signature of coal and rock is research ore deposit underground mining, therefore the Penetration Signature of Study on Coal rock mass has important engineering significance.The Penetration Signature research of Chinese scholars to coal and rock is that the room mode of doing experiment is carried out by experiment mostly, and test can be divided into two classes: the first kind carries out the characteristic test of coal and rock Liquid Penetrant by the mode of Liquid Penetrant measurement of discharge; Equations of The Second Kind carries out the test of coal and rock gas permeation property by the mode of gas infiltration measurement of discharge, test method when carrying out the characteristic test of coal and rock Liquid Penetrant and gas permeation property test is divided into again two kinds: a kind of is when pressure reduction is stable, measure the flow that fluid permeability crosses coal and rock, i.e. steady state method; Because the side exposed side in tunnel of coal and rock in lane is atmospheric pressure by gaseous tension, internal gas pressure is stabilized in certain value, and therefore steady state method is mainly used in helping the Penetration Signature of coal and rock to test to lane; Another kind is in pressure reduction change procedure, measures the relation of flow about the time that fluid permeability crosses coal and rock, i.e. Transient Method; The inner gas of coal and rock due to mine deep part is usually migrated along coal and rock internal crack and hole because of the existence of gas pressure difference, also because pressure differential in migration process reduces, migration velocity and flow change, and therefore Transient Method is mainly used in testing the Penetration Signature of mine deep part coal and rock.

At present, steady state method and Transient Method is adopted to carry out the technology comparatively maturation of coal and rock Liquid Penetrant characteristic test, but, the technology adopting steady state method and Transient Method to carry out the test of coal and rock gas permeation property is also in development, there is following defect and deficiency: (1) is although can realize three axle seepage tests of gas, but the confined pressure in three axle seepage tests is uncontrollable, can not provide the data of confined pressure factor for engineering technical personnel, thus engineering technical personnel also just cannot study the impact that confined pressure is tested coal and rock gas permeation property; But the different depth place of mine, the confined pressure suffered by coal and rock varies in size, and the gas permeation property of coal and rock also can change because of the difference of confined pressure size; (2) in the single shaft seepage tests and three axle seepage tests of gas, all do not consider the impact of disturbance factor, but the coal and rock under mine is often because of disturbing influence that the factor such as digging laneway and coal mining is subject in various degree, and then coal and rock internal crack develops and the regularity of distribution changes, the seepage characteristic of coal and rock is caused to change, thus change the rules such as the Gas of coal and rock, therefore the Penetration Signature of research disturbance factor to coal and rock has important practical significance.

Summary of the invention

Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provides a kind of structure simple, easy to assembly, uses simple operation, the coal body Penetration Signature test macro of axial compression, confined pressure and methane gas pressure controllable.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of coal body Penetration Signature test macro, it is characterized in that: comprise electronic universal tester, Penetration Signature proving installation, vibration detection device, the first methane gas system, confined pressure hydraulic system and computing machine, described Penetration Signature proving installation centering is placed on the base of electronic universal tester, and described electronic universal tester connects with computing machine;

Described Penetration Signature proving installation helps simulation mechanism and lane to help surrounding environment simulation mechanism to form by lane, described lane side simulation mechanism comprises the baffle plate docked successively, air permeable plate, coal petrography sample and U-shaped cutting ferrule, described baffle plate, air permeable plate, it is an entirety that coal petrography sample and U-shaped cutting ferrule are fastened by electrical adhesive tape, the outer wall of described U-shaped cutting ferrule is provided with scale, described U-shaped cutting ferrule is connected with snorkel, described snorkel is connected with breather valve and gas meter, described gas meter is connected with recording instrument without paper, described recording instrument without paper connects with computing machine, the first inlet channel is provided with in the middle part of described baffle plate, the second inlet channel be connected with the first inlet channel is provided with in the middle part of described air permeable plate, the surrounding described air permeable plate being positioned at the second inlet channel is provided with radial ventilative duct, described lane side surrounding environment simulation mechanism comprises base, be fixedly connected on the cylinder barrel of base top and be fixedly connected on the cover at cylinder barrel top, in the middle part of described cylinder barrel, sidewall has the lane side simulation mechanism patchhole inserted for lane side simulation mechanism, described base top middle position is provided with groove, push-down head is placed with in described groove, first concave surface pressure head is disposed with from top to bottom directly over described push-down head, first convex surface pressure head and piston, described piston is through cover, and the middle position of cover is provided with the through hole passed for piston, the middle part being positioned at the piston of cover outside is provided with annular projection, described piston is set with the disturbance ring being positioned at annular projection top, the vibration detection probe of described vibration detection device is placed on the surface of the piston being positioned at cover outside, the upper surface of described piston is positioned at immediately below the pressure head of described electronic universal tester, it is inner that described lane side simulation mechanism inserts cylinder barrel from described lane side simulation mechanism patchhole, and coal petrography sample is to being sitting between the upper surface of push-down head and the lower surface of first concave surface pressure head, U-shaped cutting ferrule engaging is connected in described lane side simulation mechanism patchhole, the gas access described base being provided with the 3rd inlet channel and being connected with the 3rd inlet channel, described push-down head is provided with the 4th inlet channel be connected with the 3rd inlet channel, described 4th inlet channel is connected with the first inlet channel by the first gas transport pipeline, described base is provided with the confined pressure liquid flow channel be connected with cylinder barrel inner space, described base sidepiece is provided with the confined pressure liquid entrance be connected with confined pressure liquid flow channel, and described cylinder barrel side is provided with exhausr port, described exhausr port is connected with exhausr port plug,

Described first methane gas system comprises the first methane gas tank, and the gas outlet of described first methane gas tank is connected with gas access by the second gas transport pipeline, and described second gas transport pipeline is provided with the first reduction valve and the first rain glass;

Described confined pressure hydraulic system comprises the confined pressure liquid inflow pipe that confined pressure liquid case is connected with confined pressure liquid case with one end, the other end of described confined pressure liquid inflow pipe is connected with confined pressure liquid entrance, described confined pressure liquid inflow pipe is connected with hydraulic pump and retaining valve, one section of confined pressure liquid inflow pipe between hydraulic pump and retaining valve is connected with confined pressure liquid run-down pipe, described confined pressure liquid run-down pipe is connected with confined pressure hydraulic coupling table and confined pressure liquid surplus valve, one section of confined pressure liquid inflow pipe between retaining valve and confined pressure liquid entrance is connected with confined pressure liquid recirculatory pipe, described confined pressure liquid recirculatory pipe is connected with confined pressure liquid reverse flow valve.

Above-mentioned a kind of coal body Penetration Signature test macro, it is characterized in that: comprise the second methane gas system, described second methane gas system comprises the second methane gas tank, the gas outlet of described second methane gas tank is connected with snorkel by the 3rd gas transport pipeline, and described 3rd gas transport pipeline is provided with the second reduction valve and the second rain glass.

Above-mentioned a kind of coal body Penetration Signature test macro, is characterized in that: between described base and push-down head, between base and cylinder barrel, between cylinder barrel and cover, between first concave surface pressure head and first convex surface pressure head, be provided with O-ring seal between U-shaped cutting ferrule and cylinder barrel and between cover and piston; Described cylinder barrel is fixedly connected on base top by the second bolt, and described cover is fixedly connected on cylinder barrel top by the 3rd bolt; One end of described first gas transport pipeline is connected with the first inlet channel by the first rapid-acting coupling, and the other end of described first gas transport pipeline is connected with the 4th inlet channel by the second rapid-acting coupling.

Above-mentioned a kind of coal body Penetration Signature test macro, it is characterized in that: the shape of the shape of the shape of described cylinder barrel outline, the shape of push-down head outline, coal petrography sample outline, the shape of U-shaped cutting ferrule outline and first concave surface pressure head bottom outline is cuboid, the length of described coal petrography sample is equal with the length of the length of push-down head and first concave surface pressure head bottom, the width of described coal petrography sample is equal with the width of first concave surface pressure head bottom with the width of the width of push-down head, U-shaped cutting ferrule, and the height of described coal petrography sample is equal with the height of U-shaped cutting ferrule outline; The upper surface that first concave surface pressure head after distance between described annular projection lower surface and the lower surface of piston adds combination and the overall height of first convex surface pressure head are greater than cover to push-down head upper surface between distance.

Above-mentioned a kind of coal body Penetration Signature test macro, is characterized in that: the super dynamic signalling analysis system of described vibration detection device to be model be DH5960.

Above-mentioned a kind of coal body Penetration Signature test macro, is characterized in that: described 3rd gas transport pipeline is connected with snorkel by the 3rd rapid-acting coupling.

Present invention also offers that a kind of method step is simple, measuring accuracy be high by the coal body Penetration Signature method of testing based on steady state method under disturbing influence, it is characterized in that the method comprises the following steps:

Step one, assembling coal body Penetration Signature test macro, its detailed process is:

Step 101, the baffle plate docked successively, air permeable plate, coal petrography sample and described U-shaped cutting ferrule to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;

Step 102, push-down head to be placed in described groove, and the 4th inlet channel is connected with the 3rd inlet channel, and one end of the first gas transport pipeline is connected on the 4th inlet channel;

Step 103, cylinder barrel is fixedly connected on base top;

Step 104, the one end described lane side simulation mechanism with baffle plate are inserted in described lane side simulation mechanism patchhole, and by observing the scale be arranged on U-shaped cutting ferrule outer wall, are made coal petrography sample to being sitting on the upper surface of push-down head;

Step 105, the other end of the first gas transport pipeline is connected on the first inlet channel;

Step 106, first concave surface pressure head aligned be positioned over coal petrography sample upper surface on, and place first convex surface pressure head at the top of first concave surface pressure head;

Step 107, by piston through being arranged in the through hole of cover middle position, and cover is fixedly connected on cylinder barrel top, ensures the center of piston and the central alignment of first convex surface pressure head simultaneously;

Step 108, disturbance ring set is contained in position piston being positioned at annular projection top;

Step 109, the second gas transport pipeline is connected on gas access;

Step 1010, confined pressure liquid inflow pipe is connected on confined pressure liquid entrance;

Step 1011, electronic universal tester to be connected with computing machine, and the Penetration Signature proving installation centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester, and the upper surface of piston is made to be positioned at immediately below the pressure head of described electronic universal tester;

Step 2, coal supply rock sample load axial compression: on computers, open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester, and the pressure head setting electronic universal tester presses down speed parameter and the pressure parameter of piston, the pressure head of electronic universal tester presses down piston, until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting;

Step 3, coal supply rock sample load confined pressure: take off the exhausr port plug be connected on exhausr port, open exhausr port, open the feed liquor switch of confined pressure liquid surplus valve, open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case warp after hydraulic pump pressurization flows in cylinder barrel by confined pressure liquid inflow pipe and confined pressure liquid entrance, when exhausr port has confined pressure liquid to flow out, exhausr port plug is connected on exhausr port, closes exhausr port;

Step 4, coal supply rock sample load methane gas pressure: first, open breather valve, then, open the switch of the first reduction valve, open described first methane gas system, methane gas in first methane gas tank is entered in the first inlet channel and the second inlet channel by the gentle body entrance of the second gas transport pipeline by warp after the first reduction valve decompression, and enters in bleeder vent road;

Step 5, under disturbing influence coal petrography sample infiltration methane gas flow detect, its detailed process is as follows:

Step 501, by the vibration detection of vibration detection device probe be placed on the surface of the piston being positioned at cover outside, open vibration detection device;

Step 502, unlatching recording instrument without paper;

Step 503, disturbance ring mentioned and decontrols again, make disturbance ring impact annular projection from eminence along the downward free fall type of piston, form the shock vibration to coal petrography sample; In perturbation process, vibration detection device detects the oscillation intensity that disturbance produces and stores, simultaneously, gas meter to penetrate into through coal petrography sample in U-shaped cutting ferrule and the methane gas flow flowed in snorkel detects in real time and detected data on flows Q is exported to recording instrument without paper, the data on flows Q that recording instrument without paper real time record gas meter detects by data on flows Q real-time Transmission to computing machine;

Step 504, described computing machine receive the data on flows Q of recording instrument without paper real-time Transmission, and draw out the curve of data on flows Q t change in time.

Present invention also offers that a kind of method step is simple, measuring accuracy be high by the coal body Penetration Signature method of testing based on Transient Method under disturbing influence, it is characterized in that the method comprises the following steps:

Step one, assembling coal body Penetration Signature test macro, its detailed process is:

Step 101, the baffle plate docked successively, air permeable plate, coal petrography sample and described U-shaped cutting ferrule to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;

Step 102, push-down head to be placed in described groove, and the 4th inlet channel is connected with the 3rd inlet channel, and one end of the first gas transport pipeline is connected on the 4th inlet channel;

Step 103, cylinder barrel is fixedly connected on base top;

Step 104, the one end described lane side simulation mechanism with baffle plate are inserted in described lane side simulation mechanism patchhole, and by observing the scale be arranged on U-shaped cutting ferrule outer wall, are made coal petrography sample to being sitting on the upper surface of push-down head;

Step 105, the other end of the first gas transport pipeline is connected on the first inlet channel;

Step 106, first concave surface pressure head aligned be positioned over coal petrography sample upper surface on, and place first convex surface pressure head at the top of first concave surface pressure head;

Step 107, by piston through being arranged in the through hole of cover middle position, and cover is fixedly connected on cylinder barrel top, ensures the center of piston and the central alignment of first convex surface pressure head simultaneously;

Step 108, disturbance ring set is contained in position piston being positioned at annular projection top;

Step 109, the second gas transport pipeline is connected on gas access;

Step 1010, confined pressure liquid inflow pipe is connected on confined pressure liquid entrance;

Step 1011, the 3rd gas transport pipeline is connected on snorkel;

Step 1012, electronic universal tester to be connected with computing machine, and the Penetration Signature proving installation centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester, and the upper surface of piston is made to be positioned at immediately below the pressure head of described electronic universal tester;

Step 2, coal supply rock sample load axial compression: on computers, open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester, and the pressure head setting electronic universal tester presses down speed parameter and the pressure parameter of piston, the pressure head of electronic universal tester presses down piston, until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting;

Step 3, coal supply rock sample load confined pressure: take off the exhausr port plug be connected on exhausr port, open exhausr port, open the feed liquor switch of confined pressure liquid surplus valve, open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case warp after hydraulic pump pressurization flows in cylinder barrel by confined pressure liquid inflow pipe and confined pressure liquid entrance, when exhausr port has confined pressure liquid to flow out, exhausr port plug is connected on exhausr port, closes exhausr port;

Step 4, coal supply rock sample load methane gas pressure: first, open breather valve, then, open the switch of the first reduction valve and the switch of the second reduction valve, open described first methane gas system and described second methane gas system, and regulate the first reduction valve and the second reduction valve, make gaseous tension that the first rain glass and the second rain glass show equal and be a 1mPa, methane gas in first methane gas tank enters in the first inlet channel and the second inlet channel by warp after the first reduction valve decompression by the gentle body entrance of the second gas transport pipeline, and entering in bleeder vent road, the methane gas in the second methane gas tank enters in U-shaped cutting ferrule by warp after the second reduction valve decompression by the 3rd gas transport pipeline and snorkel; After 5 ~ 10 minutes, close the switch of the first reduction valve and the switch of the second reduction valve; Wherein, a 1span be 0.5MPa ~ 0.7MPa;

Step 5, under disturbing influence coal petrography sample infiltration methane gas flow detect, its detailed process is as follows:

Step 501, by the vibration detection of vibration detection device probe be placed on the surface of the piston being positioned at cover outside, open vibration detection device;

Step 502, unlatching recording instrument without paper;

Step 503, open the first reduction valve switch and regulate the first reduction valve, make the gaseous tension that the first rain glass shows be a 2mPa, after 10 ~ 20 seconds, closes the switch of the first reduction valve; Wherein, a 2>a 1and a 2-a 1span be 0.3MPa ~ 0.6MPa;

Step 504, disturbance ring mentioned and decontrols again, make disturbance ring impact annular projection from eminence along the downward free fall type of piston, form the shock vibration to coal petrography sample; In perturbation process, vibration detection device detects the oscillation intensity that disturbance produces and stores; Gas meter to penetrate into through coal petrography sample in U-shaped cutting ferrule and the methane gas flow flowed in snorkel detects in real time and detected data on flows Q is exported to recording instrument without paper, the data on flows Q that recording instrument without paper real time record gas meter detects by data on flows Q real-time Transmission to computing machine;

Step 505, described computing machine receive the data on flows Q of recording instrument without paper real-time Transmission, and draw out the curve of data on flows Q t change in time.

Above-mentioned method, is characterized in that: in described step 102 before being placed on by push-down head in described groove, first in groove, puts into O-ring seal; In described step 103 before cylinder barrel is fixedly connected on base top, first put into O-ring seal in base top; In described step 104 before the one end described lane side simulation mechanism with baffle plate is inserted in described lane side simulation mechanism patchhole, first in described lane side simulation mechanism patchhole, put into O-ring seal; In described step 106 before first convex surface pressure head is placed on the top of first concave surface pressure head, first in first concave surface pressure head, put into O-ring seal; In described step 107 by piston through the through hole being arranged on cover middle position in before, first in the through hole being arranged on cover middle position, put into O-ring seal; In described step 107 before cover is fixedly connected on cylinder barrel top, first put into O-ring seal at cylinder barrel top; In described step 103, cylinder barrel being fixedly connected on base top is employing second bolt; In described step 107, cover being fixedly connected on cylinder barrel top is employing the 3rd bolt.

Above-mentioned method, it is characterized in that: the speed parameter that the pressure head of the electronic universal tester set in described step 2 presses down piston is 0.4mm/min ~ 0.6mm/min, the pressure parameter that the pressure head of the electronic universal tester set in described step 2 presses down piston is 3MPa ~ 5MPa.

The present invention compared with prior art has the following advantages:

1, the structure of coal body Penetration Signature test macro of the present invention is simple, easy to assembly, uses simple operation.

2, Penetration Signature proving installation of the present invention helps simulation mechanism and lane to help surrounding environment simulation mechanism to form by lane, by with electronic universal tester, Penetration Signature proving installation, vibration detection device, first methane gas system, second methane gas system, confined pressure hydraulic system and computing machine with the use of, can not only in axial compression, carry out steady state method under disturbing influence under the prerequisite of confined pressure and methane gas pressure controllable and measure the experiment of coal and rock gas flow characteristic, to lane side coal and rock, (the lane exposed measurement gas pressure in tunnel of side coal and rock is atmospheric pressure, internal gas pressure is stabilized in certain value) test by the gas permeation property of disturbing influence, the experiment that Transient Method under disturbing influence measures coal and rock gas flow characteristic can also be carried out under the prerequisite of axial compression, confined pressure and methane gas pressure controllable, the coal and rock of mine deep part is tested by the gas permeation property of disturbing influence, the data of experimental record are supplied to engineering technical personnel, foundation can be provided for engineering technical personnel study confined pressure on the impact that coal and rock gas permeation property is tested, and experiment evidence can be provided for engineering technical personnel study the impact of disturbance factor on the gas permeation property of coal and rock.

3, surrounding air permeable plate of the present invention being positioned at the second inlet channel is provided with radial ventilative duct, methane gas can carry out the pressurization of gas face by the ventilative duct on air permeable plate to coal petrography sample, pressure effect is good, can simulate the effect of coal mine gas gaseous tension to coal and rock truly.

4, U-shaped cutting ferrule outer wall of the present invention is provided with scale, can by observing the scale be arranged on U-shaped cutting ferrule outer wall, make coal petrography sample to being sitting on the upper surface of push-down head, and the pressure head of electronic universal tester can be made to load axial compression by piston exactly to coal petrography sample, contribute to the precision improving the test of coal body Penetration Signature.

5, when the present invention uses, the oscillation intensity produced by record disturbance and disturbance time, the oscillation intensity produced for research disturbance and the impact effect of disturbance time to coal body Penetration Signature provide foundation.

6, complete function of the present invention, practical, and result of use is good, is convenient to promote the use of.

In sum, of the present invention reasonable in design, it is convenient to realize, axial compression, confined pressure and methane gas pressure controllable, the coal and rock of coal and rock and mine deep part can be helped to test by the gas permeation property of disturbing influence to lane, measuring accuracy is high, complete function, practical.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment of the present invention 1.

Fig. 2 is the structural representation of the embodiment of the present invention 2.

Fig. 3 is the structural representation of Penetration Signature proving installation of the present invention.

Description of reference numerals:

1-baffle plate; 2-air permeable plate; 3-coal petrography sample;

4-U-shaped cutting ferrule; 5-the first inlet channel; 6-the second inlet channel;

7-ventilative duct; 8-base; 9-cylinder barrel;

10-cover; 11-push-down head; 12-first convex surface pressure head;

13-piston; 14-the three inlet channel; 15-gas access;

16-the four inlet channel; 17-the first gas transport pipeline;

18-confined pressure liquid flow channel; 19-confined pressure liquid entrance; 20-exhausr port;

21-exhausr port plug; 22-the first methane gas tank;

23-the second gas transport pipeline; 24-the first reduction valve;

25-the first rain glass; 26-confined pressure liquid case; 27-confined pressure liquid inflow pipe;

28-hydraulic pump; 29-confined pressure liquid run-down pipe; 30-confined pressure hydraulic coupling table;

31-confined pressure liquid surplus valve; 32-confined pressure liquid recirculatory pipe; 33-confined pressure liquid reverse flow valve;

34-snorkel; 35-breather valve; 36-annular projection;

37-disturbance ring; 38-the second methane gas tank; 39-first concave surface pressure head;

40-electronic universal tester; 41-Penetration Signature proving installation;

42-computing machine; 43-retaining valve; 44-O-ring seal;

45-the second bolt; 46-the three bolt;

47-the three gas transport pipeline; 48-the second reduction valve;

49-the second rain glass; 50-vibration detection device; 51-gas meter;

52-recording instrument without paper.

Embodiment

Embodiment 1

As shown in figures 1 and 3, a kind of coal body Penetration Signature test macro of the present invention, comprise electronic universal tester 40, Penetration Signature proving installation 41, vibration detection device 50, first methane gas system, confined pressure hydraulic system and computing machine 42, described Penetration Signature proving installation 41 centering is placed on the base of electronic universal tester 40, and described electronic universal tester 40 connects with computing machine 42;

Described Penetration Signature proving installation 41 helps simulation mechanism and lane to help surrounding environment simulation mechanism to form by lane, described lane side simulation mechanism comprises the baffle plate 1 docked successively, air permeable plate 2, coal petrography sample 3 and U-shaped cutting ferrule 4, described baffle plate 1, air permeable plate 2, it is an entirety that coal petrography sample 3 and U-shaped cutting ferrule 4 are fastened by electrical adhesive tape, the outer wall of described U-shaped cutting ferrule 4 is provided with scale, described U-shaped cutting ferrule 4 is connected with snorkel 34, described snorkel 34 is connected with breather valve 35 and gas meter 51, described gas meter 51 is connected with recording instrument without paper 52, described recording instrument without paper 52 connects with computing machine 42, the first inlet channel 5 is provided with in the middle part of described baffle plate 1, the second inlet channel 6 be connected with the first inlet channel 5 is provided with in the middle part of described air permeable plate 2, the surrounding described air permeable plate 2 being positioned at the second inlet channel 6 is provided with radial ventilative duct 7, described lane side surrounding environment simulation mechanism comprises base 8, be fixedly connected on the cylinder barrel 9 at base 8 top and be fixedly connected on the cover 10 at cylinder barrel 9 top, in the middle part of described cylinder barrel 9, sidewall has the lane side simulation mechanism patchhole inserted for lane side simulation mechanism, described base 8 crown center position is provided with groove, push-down head 11 is placed with in described groove, first concave surface pressure head 39 is disposed with from top to bottom directly over described push-down head 11, first convex surface pressure head 12 and piston 13, described piston 13 is through cover 10, and the middle position of cover 10 is provided with the through hole passed for piston 13, the middle part being positioned at the piston 13 of cover 10 outside is provided with annular projection 36, described piston 13 is set with the disturbance ring 37 being positioned at annular projection 36 top, the vibration detection probe of described vibration detection device 50 is placed on the surface of the piston 13 being positioned at cover 10 outside, the upper surface of described piston 13 is positioned at immediately below the pressure head of described electronic universal tester 40, it is inner that described lane side simulation mechanism inserts cylinder barrel 9 from described lane side simulation mechanism patchhole, and coal petrography sample 3 is to being sitting between the upper surface of push-down head 11 and the lower surface of first concave surface pressure head 39, U-shaped cutting ferrule 4 is connected together in described lane side simulation mechanism patchhole, the gas access 15 described base 8 being provided with the 3rd inlet channel 14 and being connected with the 3rd inlet channel 14, described push-down head 11 is provided with the 4th inlet channel 16 be connected with the 3rd inlet channel 14, described 4th inlet channel 16 is connected with the first inlet channel 5 by the first gas transport pipeline 17, described base 8 is provided with the confined pressure liquid flow channel 18 be connected with cylinder barrel 9 inner space, described base 8 sidepiece is provided with the confined pressure liquid entrance 19 be connected with confined pressure liquid flow channel 18, described cylinder barrel 9 side is provided with exhausr port 20, and described exhausr port 20 is connected with exhausr port plug 21,

Described first methane gas system comprises the first methane gas tank 22, the gas outlet of described first methane gas tank 22 is connected with gas access 15 by the second gas transport pipeline 23, described second gas transport pipeline 23 is provided with the first reduction valve 24 and the first rain glass 25;

Described confined pressure hydraulic system comprises the confined pressure liquid inflow pipe 27 that confined pressure liquid case 26 is connected with confined pressure liquid case 26 with one end, the other end of described confined pressure liquid inflow pipe 27 is connected with confined pressure liquid entrance 19, described confined pressure liquid inflow pipe 27 is connected with hydraulic pump 28 and retaining valve 43, one section of confined pressure liquid inflow pipe 27 between hydraulic pump 28 and retaining valve 43 is connected with confined pressure liquid run-down pipe 29, described confined pressure liquid run-down pipe 29 is connected with confined pressure hydraulic coupling table 30 and confined pressure liquid surplus valve 31, one section of confined pressure liquid inflow pipe 27 between retaining valve 43 and confined pressure liquid entrance 19 is connected with confined pressure liquid recirculatory pipe 32, described confined pressure liquid recirculatory pipe 32 is connected with confined pressure liquid reverse flow valve 33.

In the present embodiment, between described base 8 and push-down head 11, between base 8 and cylinder barrel 9, between cylinder barrel 9 and cover 10, between first concave surface pressure head 39 and first convex surface pressure head 12, between U-shaped cutting ferrule 4 and cylinder barrel 9 and between cover 10 and piston 13, be provided with O-ring seal 44; Described cylinder barrel 9 is fixedly connected on base 8 top by the second bolt 45, and described cover 10 is fixedly connected on cylinder barrel 9 top by the 3rd bolt 46; One end of described first gas transport pipeline 17 is connected with the first inlet channel 5 by the first rapid-acting coupling, and the other end of described first gas transport pipeline 17 is connected with the 4th inlet channel 16 by the second rapid-acting coupling.

In the present embodiment, the shape of the shape of described cylinder barrel 9 outline, the shape of push-down head 11 outline, the shape of coal petrography sample 3 outline, the shape of U-shaped cutting ferrule 4 outline and first concave surface pressure head 39 bottom outline is cuboid, the length of described coal petrography sample 3 is equal with the length of the length of push-down head 11 and first concave surface pressure head 39 bottom, the width of described coal petrography sample 3 is equal with the width of first concave surface pressure head 39 bottom with the width of the width of push-down head 11, U-shaped cutting ferrule 4, and the height of described coal petrography sample 3 is equal with the height of U-shaped cutting ferrule 4 outline; The upper surface that first concave surface pressure head 39 after distance between described annular projection 36 lower surface and the lower surface of piston 13 adds combination and the overall height of first convex surface pressure head 12 are greater than cover 10 to push-down head 11 upper surface between distance, can ensure to press down in the process of piston 13 at the push-down head 11 of electronic universal tester 40, annular projection 36 does not encounter cover 10.

In the present embodiment, described vibration detection device 50 for model be the super dynamic signalling analysis system of DH5960.

Adopt a kind of coal body Penetration Signature test macro in the present embodiment to carry out the method for coal body Penetration Signature test, comprise the following steps:

Step one, assembling coal body Penetration Signature test macro, its detailed process is:

Step 101, the baffle plate 1 docked successively, air permeable plate 2, coal petrography sample 3 and described U-shaped cutting ferrule 4 to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;

Step 102, push-down head 11 to be placed in described groove, and the 4th inlet channel 16 is connected with the 3rd inlet channel 14, and one end of the first gas transport pipeline 17 is connected on the 4th inlet channel 16;

Step 103, cylinder barrel 9 is fixedly connected on base 8 top;

Step 104, the one end described lane side simulation mechanism with baffle plate 1 are inserted in described lane side simulation mechanism patchhole, and by observing the scale be arranged on U-shaped cutting ferrule 4 outer wall, are made coal petrography sample 3 to being sitting on the upper surface of push-down head 11; During concrete enforcement, the distance that known seat 8 center to cylinder barrel 9 has the side, side of lane side simulation mechanism patchhole is l 1, and the half of the length of known coal petrography sample 3 is l 2, by formula l=l 1-l 2just can calculate the distance l that side to cylinder barrel 9 that U-shaped cutting ferrule 4 stretches into cylinder barrel 9 inside has the side, side of lane side simulation mechanism patchhole, and this distance l can be learnt by the observation scale be arranged on U-shaped cutting ferrule 4 outer wall;

Step 105, the other end of the first gas transport pipeline 17 is connected on the first inlet channel 5;

Step 106, first concave surface pressure head 39 aligned be positioned over coal petrography sample 3 upper surface on, and place first convex surface pressure head 12 at the top of first concave surface pressure head 39;

Step 107, by piston 13 through being arranged in the through hole of cover 10 middle position, and cover 10 is fixedly connected on cylinder barrel 9 top, ensures the center of piston 13 and the central alignment of first convex surface pressure head 12 simultaneously;

Step 108, disturbance ring 37 is sleeved on position piston 13 being positioned at annular projection 36 top;

Step 109, the second gas transport pipeline 23 is connected on gas access 15;

Step 1010, confined pressure liquid inflow pipe 27 is connected on confined pressure liquid entrance 19;

Step 1011, electronic universal tester 40 to be connected with computing machine 42, and Penetration Signature proving installation 41 centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester 40, and the upper surface of piston 13 is made to be positioned at immediately below the pressure head of described electronic universal tester 40;

Step 2, coal supply rock sample 3 load axial compression: on computing machine 42, open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester 40, and the pressure head setting electronic universal tester 40 presses down speed parameter and the pressure parameter of piston 13, the pressure head of electronic universal tester 40 presses down piston 13, until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting; By pressing down the pressure parameter of piston 13 at the pressure head arranging different electronic universal testers 40, the adjustment to axial compression can be realized;

Step 3, coal supply rock sample 3 load confined pressure: take off the exhausr port plug 21 be connected on exhausr port 20, open exhausr port 20, open the feed liquor switch of confined pressure liquid surplus valve 31, open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case 26 warp after hydraulic pump 28 pressurizes flows in cylinder barrel 9 by confined pressure liquid inflow pipe 27 and confined pressure liquid entrance 19, when exhausr port 20 has confined pressure liquid to flow out, exhausr port plug 21 is connected on exhausr port 20, closes exhausr port 20; By at operation confined pressure liquid surplus valve 31, the adjustment to confined pressure can be realized;

Step 4, coal supply rock sample 3 load methane gas pressure: first, open breather valve 35, then, open the switch of the first reduction valve 24, open described first methane gas system, through being entered in the first inlet channel 5 and the second inlet channel 6 by the second gas transport pipeline 23 and gas access 15 after methane gas in first methane gas tank 22 is reduced pressure by the first reduction valve 24, and enter in bleeder vent road 7; By operating the first reduction valve 24, the adjustment to methane gas pressure size can be realized;

Step 5, under disturbing influence coal petrography sample 3 permeate methane gas flow detect, its detailed process is as follows:

Step 501, by the vibration detection of vibration detection device 50 probe be placed on the surface of the piston 13 being positioned at cover 10 outside, open vibration detection device 50;

Step 502, unlatching recording instrument without paper 52;

Step 503, to be mentioned by disturbance ring 37 and decontrol, downward free fall type impacts annular projection 36 from eminence along piston 13 to make disturbance ring 37, forms the shock vibration to coal petrography sample 3; In perturbation process, the oscillation intensity that vibration detection device 50 pairs of disturbances produce detects and stores, simultaneously, gas meter 51 to penetrate into through coal petrography sample 3 in U-shaped cutting ferrule 4 and the methane gas flow flowed in snorkel 34 detects in real time and detected data on flows Q is exported to recording instrument without paper 52, the data on flows Q that recording instrument without paper 52 real time record gas meter 51 detects by data on flows Q real-time Transmission to computing machine 42;

Step 504, described computing machine 42 receive the data on flows Q of recording instrument without paper 52 real-time Transmission, and draw out the curve of data on flows Q t change in time.

In addition, can also record the disturbance time in experiment, the oscillation intensity produced for research disturbance and the impact effect of disturbance time to coal body Penetration Signature provide foundation.

During concrete enforcement, in described step 102 before being placed in described groove by push-down head 11, first in groove, put into O-ring seal 44; In described step 103 before cylinder barrel 9 is fixedly connected on base 8 top, first put into O-ring seal 44 at base 8 top; In described step 104 before the one end described lane side simulation mechanism with baffle plate 1 is inserted in described lane side simulation mechanism patchhole, first in described lane side simulation mechanism patchhole, put into O-ring seal 44; In described step 106 before first convex surface pressure head 12 is placed on the top of first concave surface pressure head 39, first in first concave surface pressure head 39, put into O-ring seal 44; In described step 107 by piston 13 through the through hole being arranged on cover 10 middle position in before, first in the through hole being arranged on cover 10 middle position, put into O-ring seal 44; In described step 107 before cover 10 is fixedly connected on cylinder barrel 9 top, first put into O-ring seal 44 at cylinder barrel 9 top; In described step 103, cylinder barrel 9 being fixedly connected on base 8 top is employing second bolt 45; In described step 107, cover 10 being fixedly connected on cylinder barrel 9 top is employing the 3rd bolt 46.The speed parameter that the pressure head of the electronic universal tester 40 set in described step 2 presses down piston 13 is 0.4mm/min ~ 0.6mm/min, and the pressure parameter that the pressure head of the electronic universal tester 40 set in described step 2 presses down piston 13 is 3MPa ~ 5MPa.

The method is in fact the method that under disturbing influence, steady state method measures coal and rock gas flow characteristic, is mainly used in testing by the gas permeation property of disturbing influence lane side coal and rock.

Embodiment 2

As shown in Figure 2, the present embodiment is as different from Example 1: the present invention also comprises the second methane gas system, described second methane gas system comprises the second methane gas tank 38, the gas outlet of described second methane gas tank 38 is connected with snorkel 34 by the 3rd gas transport pipeline 47, described 3rd gas transport pipeline 47 is provided with the second reduction valve 48 and the second rain glass 49.Particularly, described 3rd gas transport pipeline 47 is connected with snorkel 34 by the 3rd rapid-acting coupling.All the other structures are all identical with embodiment 1.

Adopt a kind of coal body Penetration Signature test macro in the present embodiment to carry out the method for coal body Penetration Signature test under disturbing influence, comprise the following steps:

Step one, assembling coal body Penetration Signature test macro, its detailed process is:

Step 101, the baffle plate 1 docked successively, air permeable plate 2, coal petrography sample 3 and described U-shaped cutting ferrule 4 to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;

Step 102, push-down head 11 to be placed in described groove, and the 4th inlet channel 16 is connected with the 3rd inlet channel 14, and one end of the first gas transport pipeline 17 is connected on the 4th inlet channel 16;

Step 103, cylinder barrel 9 is fixedly connected on base 8 top;

Step 104, the one end described lane side simulation mechanism with baffle plate 1 are inserted in described lane side simulation mechanism patchhole, and by observing the scale be arranged on U-shaped cutting ferrule 4 outer wall, are made coal petrography sample 3 to being sitting on the upper surface of push-down head 11; During concrete enforcement, the distance that known seat 8 center to cylinder barrel 9 has the side, side of lane side simulation mechanism patchhole is l 1, and the half of the length of known coal petrography sample 3 is l 2, by formula l=l 1-l 2just can calculate the distance l that side to cylinder barrel 9 that U-shaped cutting ferrule 4 stretches into cylinder barrel 9 inside has the side, side of lane side simulation mechanism patchhole, and this distance l can be learnt by the observation scale be arranged on U-shaped cutting ferrule 4 outer wall;

Step 105, the other end of the first gas transport pipeline 17 is connected on the first inlet channel 5;

Step 106, first concave surface pressure head 39 aligned be positioned over coal petrography sample 3 upper surface on, and place first convex surface pressure head 12 at the top of first concave surface pressure head 39;

Step 107, by piston 13 through being arranged in the through hole of cover 10 middle position, and cover 10 is fixedly connected on cylinder barrel 9 top, ensures the center of piston 13 and the central alignment of first convex surface pressure head 12 simultaneously;

Step 108, disturbance ring 37 is sleeved on position piston 13 being positioned at annular projection 36 top;

Step 109, the second gas transport pipeline 23 is connected on gas access 15;

Step 1010, confined pressure liquid inflow pipe 27 is connected on confined pressure liquid entrance 19;

Step 1011, the 3rd gas transport pipeline 47 is connected on snorkel 34;

Step 1012, electronic universal tester 40 to be connected with computing machine 42, and Penetration Signature proving installation 41 centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester 40, and the upper surface of piston 13 is made to be positioned at immediately below the pressure head of described electronic universal tester 40;

Step 2, coal supply rock sample 3 load axial compression: on computing machine 42, open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester 40, and the pressure head setting electronic universal tester 40 presses down speed parameter and the pressure parameter of piston 13, the pressure head of electronic universal tester 40 presses down piston 13, until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting; By pressing down the pressure parameter of piston 13 at the pressure head arranging different electronic universal testers 40, the adjustment to axial compression can be realized;

Step 3, coal supply rock sample 3 load confined pressure: take off the exhausr port plug 21 be connected on exhausr port 20, open exhausr port 20, open the feed liquor switch of confined pressure liquid surplus valve 31, open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case 26 warp after hydraulic pump 28 pressurizes flows in cylinder barrel 9 by confined pressure liquid inflow pipe 27 and confined pressure liquid entrance 19, when exhausr port 20 has confined pressure liquid to flow out, exhausr port plug 21 is connected on exhausr port 20, closes exhausr port 20; By at operation confined pressure liquid surplus valve 31, the adjustment to confined pressure can be realized;

Step 4, coal supply rock sample 3 load methane gas pressure: first, open breather valve 35, then, open the switch of the first reduction valve 24 and the switch of the second reduction valve 48, open described first methane gas system and described second methane gas system, and regulate the first reduction valve 24 and the second reduction valve 48, make the gaseous tension of display on the first rain glass 25 and the second rain glass 49 equal and be a 1mPa, through entering in the first inlet channel 5 and the second inlet channel 6 by the second gas transport pipeline 23 and gas access 15 after methane gas in first methane gas tank 22 is reduced pressure by the first reduction valve 24, and enter in bleeder vent road 7, through entering in U-shaped cutting ferrule 4 by the 3rd gas transport pipeline 47 and snorkel 34 after the methane gas in the second methane gas tank 38 is reduced pressure by the second reduction valve 48; After 5 ~ 10 minutes, close the switch of the first reduction valve 24 and the switch of the second reduction valve 48; Wherein, a 1span be 0.5MPa ~ 0.7MPa; By operating the first reduction valve 24, the adjustment to the methane gas pressure size entered in ventilative duct 7 can be realized; By operating the second reduction valve 48, the adjustment to the methane gas pressure size entered in U-shaped cutting ferrule 4 can be realized;

Step 5, under disturbing influence coal petrography sample 3 permeate methane gas flow detect, its detailed process is as follows:

Step 501, by the vibration detection of vibration detection device 50 probe be placed on the surface of the piston 13 being positioned at cover 10 outside, open vibration detection device 50;

Step 502, unlatching recording instrument without paper 52;

Step 503, open the first reduction valve 24 switch and regulate the first reduction valve 24, the gaseous tension making on the first rain glass 25 display is a 2mPa, after 10 ~ 20 seconds, closes the switch of the first reduction valve 24; Wherein, a 2>a 1and a 2-a 1span be 0.3MPa ~ 0.6MPa;

Step 504, to be mentioned by disturbance ring 37 and decontrol, downward free fall type impacts annular projection 36 from eminence along piston 13 to make disturbance ring 37, forms the shock vibration to coal petrography sample 3; In perturbation process, the oscillation intensity that vibration detection device 50 pairs of disturbances produce detects and stores; Gas meter 51 to penetrate into through coal petrography sample 3 in U-shaped cutting ferrule 4 and the methane gas flow flowed in snorkel 34 detects in real time and detected data on flows Q is exported to recording instrument without paper 52, the data on flows Q that recording instrument without paper 52 real time record gas meter 51 detects by data on flows Q real-time Transmission to computing machine 42;

Step 505, described computing machine 42 receive the data on flows Q of recording instrument without paper 52 real-time Transmission, and draw out the curve of data on flows Q t change in time.

During concrete enforcement, in described step 102 before being placed in described groove by push-down head 11, first in groove, put into O-ring seal 44; In described step 103 before cylinder barrel 9 is fixedly connected on base 8 top, first put into O-ring seal 44 at base 8 top; In described step 104 before the one end described lane side simulation mechanism with baffle plate 1 is inserted in described lane side simulation mechanism patchhole, first in described lane side simulation mechanism patchhole, put into O-ring seal 44; In described step 106 before first convex surface pressure head 12 is placed on the top of first concave surface pressure head 39, first in first concave surface pressure head 39, put into O-ring seal 44; In described step 107 by piston 13 through the through hole being arranged on cover 10 middle position in before, first in the through hole being arranged on cover 10 middle position, put into O-ring seal 44; In described step 107 before cover 10 is fixedly connected on cylinder barrel 9 top, first put into O-ring seal 44 at cylinder barrel 9 top; In described step 103, cylinder barrel 9 being fixedly connected on base 8 top is employing second bolt 45; In described step 107, cover 10 being fixedly connected on cylinder barrel 9 top is employing the 3rd bolt 46.The speed parameter that the pressure head of the electronic universal tester 40 set in described step 2 presses down piston 13 is 0.4mm/min ~ 0.6mm/min, and the pressure parameter that the pressure head of the electronic universal tester 40 set in described step 2 presses down piston 13 is 3MPa ~ 5MPa.

The method is in fact the method that under disturbing influence, Transient Method measures coal and rock gas flow characteristic, is mainly used in testing by the gas permeation property of disturbing influence the coal and rock of mine deep part.

The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.

Claims (10)

1. a coal body Penetration Signature test macro, it is characterized in that: comprise electronic universal tester (40), Penetration Signature proving installation (41), vibration detection device (50), the first methane gas system, confined pressure hydraulic system and computing machine (42), described Penetration Signature proving installation (41) centering is placed on the base of electronic universal tester (40), and described electronic universal tester (40) connects with computing machine (42);
Described Penetration Signature proving installation (41) helps simulation mechanism and lane to help surrounding environment simulation mechanism to form by lane, described lane side simulation mechanism comprises the baffle plate (1) docked successively, air permeable plate (2), coal petrography sample (3) and U-shaped cutting ferrule (4), described baffle plate (1), air permeable plate (2), it is an entirety that coal petrography sample (3) and U-shaped cutting ferrule (4) are fastened by electrical adhesive tape, the outer wall of described U-shaped cutting ferrule (4) is provided with scale, described U-shaped cutting ferrule (4) is connected with snorkel (34), described snorkel (34) is connected with breather valve (35) and gas meter (51), described gas meter (51) is connected with recording instrument without paper (52), described recording instrument without paper (52) connects with computing machine (42), described baffle plate (1) middle part is provided with the first inlet channel (5), described air permeable plate (2) middle part is provided with the second inlet channel (6) be connected with the first inlet channel (5), the surrounding described air permeable plate (2) being positioned at the second inlet channel (6) is provided with radial ventilative duct (7), described lane side surrounding environment simulation mechanism comprises base (8), be fixedly connected on the cylinder barrel (9) at base (8) top and be fixedly connected on the cover (10) at cylinder barrel (9) top, described cylinder barrel (9) middle part sidewall has the lane side simulation mechanism patchhole inserted for lane side simulation mechanism, described base (8) crown center position is provided with groove, push-down head (11) is placed with in described groove, first concave surface pressure head (39) is disposed with from top to bottom directly over described push-down head (11), first convex surface pressure head (12) and piston (13), described piston (13) is through cover (10), and the middle position of cover (10) is provided with the through hole passed for piston (13), the middle part being positioned at the outside piston (13) of cover (10) is provided with annular projection (36), described piston (13) is set with the disturbance ring (37) being positioned at annular projection (36) top, the vibration detection probe of described vibration detection device (50) is placed on the surface of the piston (13) being positioned at cover (10) outside, the upper surface of described piston (13) is positioned at immediately below the pressure head of described electronic universal tester (40), it is inner that described lane side simulation mechanism inserts cylinder barrel (9) from described lane side simulation mechanism patchhole, and coal petrography sample (3) is to being sitting between the upper surface of push-down head (11) and the lower surface of first concave surface pressure head (39), U-shaped cutting ferrule (4) is connected together in described lane side simulation mechanism patchhole, the gas access (15) described base (8) being provided with the 3rd inlet channel (14) and being connected with the 3rd inlet channel (14), described push-down head (11) is provided with the 4th inlet channel (16) be connected with the 3rd inlet channel (14), described 4th inlet channel (16) is connected with the first inlet channel (5) by the first gas transport pipeline (17), described base (8) is provided with the confined pressure liquid flow channel (18) be connected with cylinder barrel (9) inner space, described base (8) sidepiece is provided with the confined pressure liquid entrance (19) be connected with confined pressure liquid flow channel (18), described cylinder barrel (9) side is provided with exhausr port (20), described exhausr port (20) is connected with exhausr port plug (21),
Described first methane gas system comprises the first methane gas tank (22), the gas outlet of described first methane gas tank (22) is connected with gas access (15) by the second gas transport pipeline (23), and described second gas transport pipeline (23) is provided with the first reduction valve (24) and the first rain glass (25);
Described confined pressure hydraulic system comprises the confined pressure liquid inflow pipe (27) that confined pressure liquid case (26) is connected with confined pressure liquid case (26) with one end, the other end of described confined pressure liquid inflow pipe (27) is connected with confined pressure liquid entrance (19), described confined pressure liquid inflow pipe (27) is connected with hydraulic pump (28) and retaining valve (43), be positioned on one section of confined pressure liquid inflow pipe (27) between hydraulic pump (28) and retaining valve (43) and be connected with confined pressure liquid run-down pipe (29), described confined pressure liquid run-down pipe (29) is connected with confined pressure hydraulic coupling table (30) and confined pressure liquid surplus valve (31), be positioned on one section of confined pressure liquid inflow pipe (27) between retaining valve (43) and confined pressure liquid entrance (19) and be connected with confined pressure liquid recirculatory pipe (32), described confined pressure liquid recirculatory pipe (32) is connected with confined pressure liquid reverse flow valve (33).
2. according to a kind of coal body Penetration Signature test macro according to claim 1, it is characterized in that: comprise the second methane gas system, described second methane gas system comprises the second methane gas tank (38), the gas outlet of described second methane gas tank (38) is connected with snorkel (34) by the 3rd gas transport pipeline (47), and described 3rd gas transport pipeline (47) is provided with the second reduction valve (48) and the second rain glass (49).
3. according to a kind of coal body Penetration Signature test macro described in claim 1 or 2, it is characterized in that: between described base (8) and push-down head (11), between base (8) and cylinder barrel (9), between cylinder barrel (9) and cover (10), between first concave surface pressure head (39) and first convex surface pressure head (12), between U-shaped cutting ferrule (4) and cylinder barrel (9) and between cover (10) and piston (13), be provided with O-ring seal (44); Described cylinder barrel (9) is fixedly connected on base (8) top by the second bolt (45), and described cover (10) is fixedly connected on cylinder barrel (9) top by the 3rd bolt (46); One end of described first gas transport pipeline (17) is connected with the first inlet channel (5) by the first rapid-acting coupling, and the other end of described first gas transport pipeline (17) is connected with the 4th inlet channel (16) by the second rapid-acting coupling.
4. according to a kind of coal body Penetration Signature test macro described in claim 1 or 2, it is characterized in that: the shape of described cylinder barrel (9) outline, the shape of push-down head (11) outline, the shape of coal petrography sample (3) outline, the shape of U-shaped cutting ferrule (4) outline and the shape of first concave surface pressure head (39) bottom outline are cuboid, the length of described coal petrography sample (3) is equal with the length of the length of push-down head (11) and first concave surface pressure head (39) bottom, the width of described coal petrography sample (3) and the width of push-down head (11), the width of U-shaped cutting ferrule (4) is equal with the width of first concave surface pressure head (39) bottom, the height of described coal petrography sample (3) is equal with the height of U-shaped cutting ferrule (4) outline, first concave surface pressure head (39) after distance between the lower surface of described annular projection (36) lower surface and piston (13) adds combination and the overall height of first convex surface pressure head (12) are greater than the distance between the upper surface of upper surface to push-down head (11) of cover (10).
5., according to a kind of coal body Penetration Signature test macro described in claim 1 or 2, it is characterized in that: described vibration detection device (50) for model be the super dynamic signalling analysis system of DH5960.
6. according to a kind of coal body Penetration Signature test macro according to claim 2, it is characterized in that: described 3rd gas transport pipeline (47) is connected with snorkel (34) by the 3rd rapid-acting coupling.
7. utilize system as claimed in claim 1 to carry out a method for coal body Penetration Signature test, it is characterized in that the method comprises the following steps:
Step one, assembling coal body Penetration Signature test macro, its detailed process is:
Step 101, the baffle plate docked successively (1), air permeable plate (2), coal petrography sample (3) and described U-shaped cutting ferrule (4) to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;
Step 102, push-down head (11) is placed in described groove, and the 4th inlet channel (16) is connected with the 3rd inlet channel (14), and one end of the first gas transport pipeline (17) is connected on the 4th inlet channel (16);
Step 103, cylinder barrel (9) is fixedly connected on base (8) top;
Step 104, the one end described lane side simulation mechanism with baffle plate (1) are inserted in described lane side simulation mechanism patchhole, and be arranged on the scale on U-shaped cutting ferrule (4) outer wall by observation, make coal petrography sample (3) to being sitting on the upper surface of push-down head (11);
Step 105, the other end of the first gas transport pipeline (17) is connected on the first inlet channel (5);
Step 106, first concave surface pressure head (39) aligned be positioned over coal petrography sample (3) upper surface on, and place first convex surface pressure head (12) at the top of first concave surface pressure head (39);
Step 107, by piston (13) through being arranged in the through hole of cover (10) middle position, and cover (10) is fixedly connected on cylinder barrel (9) top, ensure the center of piston (13) and the central alignment of first convex surface pressure head (12) simultaneously;
Step 108, disturbance ring (37) is sleeved on position piston (13) being positioned at annular projection (36) top;
Step 109, the second gas transport pipeline (23) is connected on gas access (15);
Step 1010, confined pressure liquid inflow pipe (27) is connected on confined pressure liquid entrance (19);
Step 1011, electronic universal tester (40) to be connected with computing machine (42), and Penetration Signature proving installation (41) centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester (40), and the upper surface of piston (13) is made to be positioned at immediately below the pressure head of described electronic universal tester (40);
Step 2, coal supply rock sample (3) load axial compression: on computing machine (42), open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester (40), and the pressure head setting electronic universal tester (40) presses down speed parameter and the pressure parameter of piston (13), the pressure head of electronic universal tester (40) presses down piston (13), until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting;
Step 3, coal supply rock sample (3) loads confined pressure: take off the exhausr port plug (21) be connected on exhausr port (20), open exhausr port (20), open the feed liquor switch of confined pressure liquid surplus valve (31), open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case (26) warp after hydraulic pump (28) pressurization flows in cylinder barrel (9) by confined pressure liquid inflow pipe (27) and confined pressure liquid entrance (19), when exhausr port (20) has confined pressure liquid to flow out, exhausr port plug (21) is connected on exhausr port (20), close exhausr port (20),
Step 4, coal supply rock sample (3) load methane gas pressure: first, open breather valve (35), then, open the switch of the first reduction valve (24), open described first methane gas system, methane gas in first methane gas tank (22) is entered in the first inlet channel (5) and the second inlet channel (6) by the second gas transport pipeline (23) and gas access (15) by warp after the first reduction valve (24) decompression, and enters in bleeder vent road (7);
Step 5, detect the methane gas flow that coal petrography sample (3) under disturbing influence permeates, its detailed process is as follows:
Step 501, the vibration detection of vibration detection device (50) probe is placed in be positioned at the outside piston (13) of cover (10) surface on, open vibration detection device (50);
Step 502, unlatching recording instrument without paper (52);
Step 503, disturbance ring (37) mentioned and decontrols again, downward free fall type impacts annular projection (36) from eminence along piston (13) to make disturbance ring (37), forms the shock vibration to coal petrography sample (3); In perturbation process, vibration detection device (50) detects the oscillation intensity that disturbance produces and stores, simultaneously, gas meter (51) to penetrate into through coal petrography sample (3) in U-shaped cutting ferrule (4) and the methane gas flow flowed in snorkel (34) detects in real time and detected data on flows Q is exported to recording instrument without paper (52), the data on flows Q that recording instrument without paper (52) real time record gas meter (51) detects by data on flows Q real-time Transmission to computing machine (42);
Step 504, described computing machine (42) receive the data on flows Q of recording instrument without paper (52) real-time Transmission, and draw out the curve of data on flows Q t change in time.
8. utilize system as claimed in claim 2 to carry out a method for coal body Penetration Signature test, it is characterized in that the method comprises the following steps:
Step one, assembling coal body Penetration Signature test macro, its detailed process is:
Step 101, the baffle plate docked successively (1), air permeable plate (2), coal petrography sample (3) and described U-shaped cutting ferrule (4) to be fastened by electrical adhesive tape be one overall, is combined into lane side simulation mechanism;
Step 102, push-down head (11) is placed in described groove, and the 4th inlet channel (16) is connected with the 3rd inlet channel (14), and one end of the first gas transport pipeline (17) is connected on the 4th inlet channel (16);
Step 103, cylinder barrel (9) is fixedly connected on base (8) top;
Step 104, the one end described lane side simulation mechanism with baffle plate (1) are inserted in described lane side simulation mechanism patchhole, and be arranged on the scale on U-shaped cutting ferrule (4) outer wall by observation, make coal petrography sample (3) to being sitting on the upper surface of push-down head (11);
Step 105, the other end of the first gas transport pipeline (17) is connected on the first inlet channel (5);
Step 106, first concave surface pressure head (39) aligned be positioned over coal petrography sample (3) upper surface on, and place first convex surface pressure head (12) at the top of first concave surface pressure head (39);
Step 107, by piston (13) through being arranged in the through hole of cover (10) middle position, and cover (10) is fixedly connected on cylinder barrel (9) top, ensure the center of piston (13) and the central alignment of first convex surface pressure head (12) simultaneously;
Step 108, disturbance ring (37) is sleeved on position piston (13) being positioned at annular projection (36) top;
Step 109, the second gas transport pipeline (23) is connected on gas access (15);
Step 1010, confined pressure liquid inflow pipe (27) is connected on confined pressure liquid entrance (19);
Step 1011, the 3rd gas transport pipeline (47) is connected on snorkel (34);
Step 1012, electronic universal tester (40) to be connected with computing machine (42), and Penetration Signature proving installation (41) centering of step 101 ~ step 108 having been assembled is placed on the base of electronic universal tester (40), and the upper surface of piston (13) is made to be positioned at immediately below the pressure head of described electronic universal tester (40);
Step 2, coal supply rock sample (3) load axial compression: on computing machine (42), open mounted electronic universal tester software in advance, operation electronic universal tester software startup electronic universal tester (40), and the pressure head setting electronic universal tester (40) presses down speed parameter and the pressure parameter of piston (13), the pressure head of electronic universal tester (40) presses down piston (13), until the pressure parameter be presented in electronic universal tester software reaches the pressure parameter of setting according to the speed parameter of setting;
Step 3, coal supply rock sample (3) loads confined pressure: take off the exhausr port plug (21) be connected on exhausr port (20), open exhausr port (20), open the feed liquor switch of confined pressure liquid surplus valve (31), open described confined pressure hydraulic system, confined pressure liquid in confined pressure liquid case (26) warp after hydraulic pump (28) pressurization flows in cylinder barrel (9) by confined pressure liquid inflow pipe (27) and confined pressure liquid entrance (19), when exhausr port (20) has confined pressure liquid to flow out, exhausr port plug (21) is connected on exhausr port (20), close exhausr port (20),
Step 4, coal supply rock sample (3) load methane gas pressure: first, open breather valve (35), then, open the switch of the first reduction valve (24) and the switch of the second reduction valve (48), open described first methane gas system and described second methane gas system, and regulate the first reduction valve (24) and the second reduction valve (48), make the gaseous tension of the first rain glass (25) and the upper display of the second rain glass (49) equal and be a 1mPa, methane gas in first methane gas tank (22) enters in the first inlet channel (5) and the second inlet channel (6) by warp after the first reduction valve (24) decompression by the second gas transport pipeline (23) and gas access (15), and entering in bleeder vent road (7), the methane gas in the second methane gas tank (38) enters in U-shaped cutting ferrule (4) by warp after the second reduction valve (48) decompression by the 3rd gas transport pipeline (47) and snorkel (34); After 5 ~ 10 minutes, close the switch of the first reduction valve (24) and the switch of the second reduction valve (48); Wherein, a 1span be 0.5MPa ~ 0.7MPa;
Step 5, detect the methane gas flow that coal petrography sample (3) under disturbing influence permeates, its detailed process is as follows:
Step 501, the vibration detection of vibration detection device (50) probe is placed in be positioned at the outside piston (13) of cover (10) surface on, open vibration detection device (50);
Step 502, unlatching recording instrument without paper (52);
Step 503, open the first reduction valve (24) switch and regulate the first reduction valve (24), the gaseous tension making the upper display of the first rain glass (25) is a 2mPa, after 10 ~ 20 seconds, closes the switch of the first reduction valve (24); Wherein, a 2>a 1and a 2-a 1span be 0.3MPa ~ 0.6MPa;
Step 504, disturbance ring (37) mentioned and decontrols again, downward free fall type impacts annular projection (36) from eminence along piston (13) to make disturbance ring (37), forms the shock vibration to coal petrography sample (3); In perturbation process, vibration detection device (50) detects the oscillation intensity that disturbance produces and stores; Gas meter (51) to penetrate into through coal petrography sample (3) in U-shaped cutting ferrule (4) and the methane gas flow flowed in snorkel (34) detects in real time and detected data on flows Q is exported to recording instrument without paper (52), the data on flows Q that recording instrument without paper (52) real time record gas meter (51) detects by data on flows Q real-time Transmission to computing machine (42);
Step 505, described computing machine (42) receive the data on flows Q of recording instrument without paper (52) real-time Transmission, and draw out the curve of data on flows Q t change in time.
9. according to the method described in claim 7 or 8, it is characterized in that: in described step 102 before push-down head (11) is placed in described groove, first in groove, put into O-ring seal (44); In described step 103 before cylinder barrel (9) is fixedly connected on base (8) top, first put into O-ring seal (44) at base (8) top; In described step 104 before the one end described lane side simulation mechanism with baffle plate (1) is inserted in described lane side simulation mechanism patchhole, first in described lane side simulation mechanism patchhole, put into O-ring seal (44); In described step 106 before first convex surface pressure head (12) is placed on the top of first concave surface pressure head (39), first in first concave surface pressure head (39), put into O-ring seal (44); In described step 107 by piston (13) through the through hole being arranged on cover (10) middle position in before, first in the through hole being arranged on cover (10) middle position, put into O-ring seal (44); In described step 107 before cover (10) is fixedly connected on cylinder barrel (9) top, first put into O-ring seal (44) at cylinder barrel (9) top; Cylinder barrel (9) being fixedly connected on base (8) top in described step 103 is employing second bolt (45); Cover (10) being fixedly connected on cylinder barrel (9) top in described step 107 is employing the 3rd bolt (46).
10. according to the method described in claim 7 or 8, it is characterized in that: the speed parameter that the pressure head of the electronic universal tester (40) set in described step 2 presses down piston (13) is 0.4mm/min ~ 0.6mm/min, the pressure parameter that the pressure head of the electronic universal tester set in described step 2 (40) presses down piston (13) is 3MPa ~ 5MPa.
CN201410150520.0A 2014-04-15 2014-04-15 A kind of coal body Penetration Signature test macro and method CN103940719B (en)

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