CN106526094A - Coal and gas outburst simulation experiment device and experiment method - Google Patents
Coal and gas outburst simulation experiment device and experiment method Download PDFInfo
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- CN106526094A CN106526094A CN201611230222.8A CN201611230222A CN106526094A CN 106526094 A CN106526094 A CN 106526094A CN 201611230222 A CN201611230222 A CN 201611230222A CN 106526094 A CN106526094 A CN 106526094A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a coal and gas outburst simulation experiment device. The coal and gas outburst simulation experiment device comprises a ground stress analog loading system, a gas pressure analog loading system, a sound emission system, an outburst box body and a computer, wherein the ground stress analog loading system comprises an electronic universal test machine, a first hydraulic cylinder and a second hydraulic cylinder; the outburst box body is centered on a base of the electronic universal test machine; and the electronic universal test machine, the first hydraulic cylinder and the second hydraulic cylinder are all connected with the computer. Besides, the invention also discloses a coal and gas outburst simulation experiment method based on the device. The device disclosed by the invention can provide stable pressure and realize three-dimensional loading pressure, can accurately record a critical pressure value during a coal sample outburst in case of the outburst, and can transmit collected data to the computer so as to reflect change rules of energy and pressure before and after a coal and gas outburst in real time.
Description
Technical field
The invention belongs to coal and gas prominent simulating experiment technique field, and in particular to a kind of coal and gas prominent simulation is real
Experiment device and experimental technique.
Background technology
With being continuously increased for coal mining depth, under high-ground stress and gas pressure effect, increasing mine
The coal and gas prominent problem of sternness will be faced, the safety in production to mine causes greatly harm.Coal and gas prominent is one
Kind extremely complex mining dynamic phenomena, its occur to be affected by the physico-mechanical properties of crustal stress, gas pressure and coal petrography and
Restriction, and it is not yet clear with regard to the research of coal and gas prominent mechanism at present.Therefore, lot of domestic and foreign scholar adopts coal and gas
Prominent analogue means has carried out substantial amounts of simulated experiment, has deepened understanding of the people to coal and gas prominent to a certain extent,
But with the proposition of coal and gas prominent mechanical function mechanism, existing analogue means exist size it is little, loading dimension it is few, inflation
Pressure bottom and it is unable to the shortcomings of energy is with prominent whole process before and after accurate recording is projected, it is impossible to fully disclose coal and dash forward with gas
Changing Pattern during going out；Particularly existing analogue means aspis needs manual unlocking, manual unlocking aspis speed
Cross slow-motion and affect the time of coal and gas prominent and the Changing Pattern of energy；Additionally, the loading system of existing apparatus is mostly not
Stable on-load pressure can be provided, there is certain difficulty to finding coal and gas prominent critical pressure value so.Accordingly, it would be desirable to
A kind of experimental provision, can simulate that coal sample size is big, loading dimension is more, the big requirement of the blowing pressure, while clearly can see
Examine and record the destruction situation and energy variation rule of coal sample during coal and gas prominent.
The content of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, there is provided a kind of coal is dashed forward with gas
Go out analogue experiment installation.The apparatus structure is simple, reasonable in design, and assembling is easy.By be configured to stress simulation loading system and
Gas pressure simulated loading system, using the teaching of the invention it is possible to provide stable pressure, realizes three-dimensional on-load pressure, and the energy when coal sample occurs prominent
Enough critical pressure values accurately recorded when projecting, by arranging acoustic emission probe and pressure sensor, can be by the number of collection
According to being transferred on computer, the Changing Pattern of the energy before and after reflection coal and gas prominent and pressure in real time.
To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of coal and gas prominent simulated experiment dress
Put, it is characterised in that：Including crustal stress simulated loading system, gas pressure simulated loading system, acoustic emission system, prominent casing
And computer；The crustal stress simulated loading system includes electronic universal tester, the first hydraulic jack and the second hydraulic jack,
The prominent casing centering is placed on the base of electronic universal tester, the electronic universal tester, the first hydraulic jack
It is connected with computer with the second hydraulic jack；First hydraulic jack and the second hydraulic jack are respectively arranged in prominent case
On the two neighboring side wall of body；
The prominent casing includes the box-like body and the cabinet base below box-like body of upper end open, the case
The upper end of body body is provided with case lid, is provided with and is compressed axially piston in the middle part of the case lid, and described being compressed axially on piston sets
There is the axial air-filled pore being connected with box-like body internal cavity, on the cabinet base, be provided with what is be connected with the cavity
Base air-filled pore, is connected with gas pipeline on the axial air-filled pore, gas service pipe, the gas are connected with the gas pipeline
Body arm is connected with base air-filled pore, offers protrusion on the box-like body and on the side wall relative with the second hydraulic jack
Mouthful, dismountable prominent plug is provided with the aspis, is provided with the box-like body and on the outside of aspis
Simulation tunnel device；Acoustic emission probe and pressure sensing are provided with simulation tunnel bottom of device on the inside of the cabinet base
Device；
The gas pressure simulated loading system includes methane gas tank and air compressor；The methane gas tank passes through
First pipeline is connected with gas pipeline, and air compressor is connected with gas pipeline by the second pipeline；
The acoustic emission system includes Acoustic radiating instrument, and the input of the Acoustic radiating instrument is connected with acoustic emission probe.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：Also include data collecting instrument, the number
Be connected with pressure sensor according to the input of Acquisition Instrument, the output end of the output end and data collecting instrument of the Acoustic radiating instrument with
Computer is connected.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：Pressure is provided with the inside of the case lid
Plate, is provided with the middle part of the case lid and is compressed axially piston hole, be compressed axially piston through it is described be compressed axially piston hole with it is upper
Pressing plate is flexibly connected, and the central gas hole being connected with the cavity, the central gas hole position are provided with the top board
It is connected in the underface of axial air-filled pore and with axial air-filled pore, the side of the first hydraulic jack is installed on the box-like body
The first side guide is provided with wall, the compression piston of the first hydraulic jack is flexibly connected through box-like body with the first side guide,
It is provided with box-like body in the side wall of the second hydraulic jack and is provided with the second side guide, the compression piston of the second hydraulic jack is worn
Cross box-like body to be flexibly connected with the second side guide.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：The lower surface and case of the top board
The lower surface of lid is concordant, be provided with the inner surface of first side guide and box-like body the first hydraulic jack side wall it is interior
Flush, the inner surface that the side wall of the second hydraulic jack is provided with the inner surface and box-like body of second side guide are put down
Together；Multiple top board air-filled pores, the top board air-filled pore and axial air-filled pore and the cavity are provided with the top board
Connect.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：The case lid is spiral shell with box-like body
Tether and connect；Between the box-like body and case lid, be compressed axially between piston and case lid, the compression piston of the first hydraulic jack with
Between box-like body, between the compression piston of the second hydraulic jack and box-like body and aspis and simulation tunnel device between
It is provided with sealing ring.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：Simulation tunnel device includes
Bright tunnel, the transparent tunnel are installed on box-like body by bolt, and transparent tunnel is away from setting in the middle part of one end of box-like body
The transparent Photo Studio of closing is equipped with, the shooting interior is provided with high-speed camera, end of the transparent tunnel away from box-like body
The bottom for being provided with pressure relief opening, the cabinet base and transparent tunnel is provided with routing hole, and the wire of acoustic emission probe is passed through
Routing hole is connected with Acoustic radiating instrument.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：The bottom in the transparent tunnel is arranged
Have for supporting the base in transparent tunnel.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：It is provided with first pipeline watt
This pressure gauge and pressure-reducing valve, the pressure-reducing valve are located between gas pressure table and methane gas tank, are arranged on second pipeline
There are vacuum table and intake valve, the intake valve is located between vacuum table and air compressor.
A kind of above-mentioned coal and gas prominent analogue experiment installation, it is characterised in that：First hydraulic jack is by the
One hydraulic system fuel feeding, first hydraulic system include the first hydraulic oil container and the first hydraulic pump, first hydraulic pump
Oil-in is connected with the first hydraulic oil container by the first hydraulic tube, and the oil-in of first hydraulic jack passes through the second hydraulic tube
It is connected with the oil-out of the first hydraulic pump, on second hydraulic tube, is connected with first pressure table and the first overflow valve；Described
Two hydraulic jacks include the second hydraulic oil container and the second hydraulic pump by the second hydraulic system fuel feeding, second hydraulic system,
The oil-in of second hydraulic pump is connected with the second hydraulic oil container by the 3rd hydraulic tube, the oil-feed of second hydraulic jack
Mouthful it is connected with the oil-out of the second hydraulic pump by the 4th hydraulic tube, on the 4th hydraulic tube, is connected with second pressure table and the
Two overflow valves.
In addition, present invention also offers a kind of employing said apparatus method for carrying out coal and gas prominent simulated experiment, its
It is characterised by：Comprise the following steps：
Step one, opening case lid, coal dust to be tested are loaded in prominent casing, electronic universal tester are opened, is passed through
It is compressed axially piston to be further applied load the coal dust in prominent casing, makes pulverized coal forming be coal sample；
Step 2, case lid and box-like body are tightly connected, take down prominent plug, it is close to carrying out between aspis and coal sample
Envelope, then blocks aspis with prominent plug；
Step 3, the first hydraulic jack of unlatching and the second hydraulic jack, apply stable initial value to coal sample, while opening
Methane gas tank, the air-tightness of the prominent casing of detection；
After step 4, air-leakage test terminate, the first hydraulic jack, the second hydraulic jack and methane gas tank are closed, is opened
Open air compressor to be de-gassed coal sample, after the completion of degassing, close air compressor；
After step 5, coal sample degassing, electronic universal tester, the first hydraulic jack and the second hydraulic jack are opened, to coal
Sample applies initial pressure, and methane gas tank is tightly connected with axial air-filled pore, base air-filled pore, the stream of methane gas tank is adjusted
Amount causes gas pressure to reach preset value and keep stable, by axial air-filled pore with base air-filled pore to the coal in prominent casing
Sample is inflated, and makes coal sample adsorption gas；
Step 6, treat coal sample adsorption gas after the completion of carry out coal and gas prominent simulated experiment, by electronic universal test
Machine applies axle pressure to coal sample, opens the first hydraulic jack and the second hydraulic jack and applies confined pressure to coal sample, by methane gas tank
Apply gas pressure to coal sample, after the stable coal and gas prominent to generation, stop the loading of axle pressure, confined pressure and gas pressure immediately,
Experimental data is recorded and preserved, all loading equipemtns are closed.
The present invention has advantages below compared with prior art：
1st, coal and gas prominent analogue experiment installation simple structure of the present invention, reasonable in design, and assembling is easy.
2nd, the present invention passes through to arrange axial air-filled pore and base air-filled pore, and is preferably provided with being provided with the top board of air-filled pore,
So that projecting the inflation of coal sample in casing evenly.
3rd, the present invention passes through to arrange dismountable prominent plug, carries out prominent blocking up is taken down during coal and gas prominent simulated experiment
Head, to sealing between aspis and coal sample, then blocks aspis with prominent plug, it is ensured that project the airtight of casing
Property, while avoiding aspis manual unlocking and affecting to project the defect of energy.
4th, the cabinet base of the prominent casing of coal and gas prominent analogue experiment installation of the present invention and simulation tunnel device bottom
Portion is equipped with acoustic emission probe and pressure sensor, can by the data transfer of collection on computer, in real time reflection coal with
The Changing Pattern of energy and pressure before and after Gas Outburst.
5th, the crustal stress loading system of coal and gas prominent analogue experiment installation of the present invention and gas pressure loading system energy
Stable pressure, and critical pressure value when accurately can record prominent when coal sample occurs prominent are enough provided.
6th, the present invention preferably arranges Photo Studio and high-speed camera in simulation tunnel device one end, can record in detail and protect
The whole dynamic process of coal and gas prominent is held, so that certain foundation is provided to disclose coal and gas prominent mechanism.
7th, the whole process of coal and gas prominent more can really be reflected using apparatus and method of the present invention, while
Three-dimensional on-load pressure can be realized, the blowing pressure is big, and good seal performance is practical, is easy to promote the use of.
In sum, the present invention is reasonable in design, can really reflect the whole process of mine coal and gas prominent, can
Avoid aspis manual unlocking and affect to project the problem of energy, being capable of energy and pressure before and after real time record coal and gas prominent
Changing Pattern, can be detailed observation coal and gas prominent whole dynamic process, it is practical, be easy to promote the use of.
With reference to the accompanying drawings and examples, technical scheme is described in further detail.
Figure of description
Fig. 1 is the structural representation that coal and gas prominent analogue experiment installation of the present invention removes simulation tunnel device.
Fig. 2 is the position relationship schematic diagram of the prominent casing of the present invention and simulation tunnel device.
Fig. 3 is the installation position schematic diagram of central gas hole of the present invention and top board air-filled pore in top board.
Fig. 4 is the structural representation of cabinet base of the present invention.
Fig. 5 is the schematic block circuit diagram of the present invention.
Description of reference numerals:
1 electronic universal tester；2-1 is compressed axially piston；2-2 axial directions air-filled pore；
2-3 case lids；2-4 central gas hole；2-5 top boards；
2-6 box-like bodies；The first side guides of 2-7；2-8 cabinet bases；
2-9 gas service pipes；2-10 routing holes；The second side guides of 2-11；
2-12 projects plug；2-13 aspises；2-14 base air-filled pores；
2-15 top board air-filled pores；2-16 gas pipelines；3 first pressure tables；
4 first overflow valves；5 first hydraulic pumps；6 first hydraulic oil containers；
7 gas pressure tables；8 pressure-reducing valves；9 intake valves；
10 vacuum tables；11 air compressors；12 methane gas tanks；
13 computers；14 data collecting instruments；15 Acoustic radiating instruments；
16 first hydraulic jacks；17 coal samples；18 second hydraulic jacks；
19 acoustic emission probes；20 transparent tunnels；21 high-speed cameras；
22 pressure sensors；23 pressure relief openings；24 bases；
25 second pressure tables；26 second overflow valves；27 second hydraulic pumps；
28 second hydraulic oil containers；29 Photo Studios；30 first pipelines；
31 second pipelines.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, coal and gas prominent analogue experiment installation of the invention, it is characterised in that：Bag
Include crustal stress simulated loading system, gas pressure simulated loading system, acoustic emission system, prominent casing and computer 13；It is described
Crustal stress simulated loading system includes electronic universal tester 1, the first hydraulic jack 16 and the second hydraulic jack 18, the protrusion
Casing centering is placed on the base of electronic universal tester 1, the electronic universal tester 1, the first hydraulic jack 16 and
Two hydraulic jacks 18 are connected with computer 13；First hydraulic jack 16 and the second hydraulic jack 18 are respectively arranged in prominent
Go out on the two neighboring side wall of casing；
The prominent casing includes the box-like body 2-6 of upper end open and the cabinet base below box-like body 2-6
The upper end of 2-8, the box-like body 2-6 is provided with case lid 2-3, is provided with and is compressed axially piston 2- in the middle part of the case lid 2-3
1, the piston 2-1 that is compressed axially is provided with the axial air-filled pore 2-2 being connected with box-like body 2-6 internal cavities, the case
The base air-filled pore 2-14 being connected with the cavity is provided with body base 2-8, on the axial air-filled pore 2-2, gas is connected with
Body pipeline 2-16, is connected with gas service pipe 2-9, the gas service pipe 2-9 and base air-filled pore 2- on the gas pipeline 2-16
14 are connected, and offer aspis 2-13 on the box-like body 2-6 and on the side wall relative with the second hydraulic jack 18, described
Dismountable prominent plug 2-12 is provided with aspis 2-13, on the box-like body 2-6 and positioned at the outer of aspis 2-13
Side is provided with simulation tunnel device；Acoustic emission probe is provided with simulation tunnel bottom of device on the inside of the cabinet base 2-8
19 and pressure sensor 22；
The gas pressure simulated loading system includes methane gas tank 12 and air compressor 11；The methane gas tank
12 are connected with gas pipeline 2-16 by the first pipeline 30, and air compressor 11 is connected with gas pipeline 2-16 by the second pipeline 31
Connect；
The acoustic emission system includes Acoustic radiating instrument 15, input and 19 phase of acoustic emission probe of the Acoustic radiating instrument 15
Even.
In the present embodiment, also including data collecting instrument 14, input and the pressure sensor 22 of the data collecting instrument 14
It is connected, the output end of the output end and data collecting instrument 14 of the Acoustic radiating instrument 15 is connected with computer 13.
In the present embodiment, top board 2-5 is provided with the inside of the case lid 2-3, in the middle part of the case lid 2-3, axial direction is provided with
Compression piston hole, is compressed axially piston 2-1 and is flexibly connected with top board 2-5 through the piston hole that is compressed axially, the upper pressure
The central gas hole 2-4 being connected with the cavity is provided with plate 2-5, the central gas hole 2-4 is located at axial air-filled pore
The underface of 2-2 and it is connected with axial air-filled pore 2-2, the side of the first hydraulic jack 16 is installed on the box-like body 2-6
The first side guide 2-7 is provided with wall, the compression piston of the first hydraulic jack 16 passes through box-like body 2-6 and the first side guide 2-
7 are flexibly connected, and be provided with the side wall of the second hydraulic jack 18 and be provided with the second side guide 2-11 on box-like body 2-6, and second
The compression piston of hydraulic jack 18 is flexibly connected through box-like body 2-6 with the second side guide 2-11.
In the present embodiment, the lower surface of the top board 2-5 is concordant with the lower surface of case lid 2-3, first side guide
The inner surface of 2-7 is concordant with the inner surface of the side wall that the first hydraulic jack 16 is provided with box-like body 2-6, second side pressure
The inner surface of plate 2-11 is concordant with the inner surface of the side wall that the second hydraulic jack 18 is provided with box-like body 2-6；The upper pressure
Multiple top board air-filled pore 2-15, the top board air-filled pore 2-15 and axial direction air-filled pore 2-2 and the chamber are provided with plate 2-5
Body is connected.
In the present embodiment, the case lid 2-3 and box-like body 2-6 is bolt connection；The box-like body 2-6 and case lid 2-
Between 3, be compressed axially between piston 2-1 and case lid 2-3, between the compression piston of the first hydraulic jack 16 and box-like body 2-6,
It is respectively provided with and aspis 2-13 and simulation tunnel device between the compression piston and box-like body 2-6 of the second hydraulic jack 18
There is sealing ring.
In the present embodiment, simulation tunnel device includes transparent tunnel 20, and the transparent tunnel 20 is installed by bolt
On box-like body 2-6, transparent tunnel 20 is provided with the transparent Photo Studio 29 of closing in the middle part of the one end away from box-like body 2-6,
High-speed camera 21 is installed in the Photo Studio 29, transparent tunnel 20 is provided with pressure relief opening away from the end of box-like body 2-6
The bottom in 23, the cabinet base 2-8 and transparent tunnel 20 is provided with routing hole 2-10, and the wire of acoustic emission probe 19 is passed through
Routing hole 2-10 is connected with Acoustic radiating instrument 15.
In the present embodiment, the bottom in the transparent tunnel 20 is provided with for supporting the base 24 in transparent tunnel 20.
In the present embodiment, gas pressure table 7 and pressure-reducing valve 8 on first pipeline 30, are provided with, the pressure-reducing valve 8 is located at
Between gas pressure table 7 and methane gas tank 12, on second pipeline 31, be provided with vacuum table 10 and intake valve 9, it is described enter
Air valve 9 is located between vacuum table 10 and air compressor 11.
In the present embodiment, first hydraulic jack 16 is by the first hydraulic system fuel feeding, the first hydraulic system bag
The first hydraulic oil container 6 and the first hydraulic pump 5 are included, the oil-in of first hydraulic pump 5 passes through the first hydraulic tube and the first hydraulic pressure
Fuel tank 6 connects, and the oil-in of first hydraulic jack 16 is connected with the oil-out of the first hydraulic pump 5 by the second hydraulic tube,
First pressure table 3 and the first overflow valve 4 are connected with second hydraulic tube；Second hydraulic jack 18 passes through the second hydraulic pressure
System fuel feeding, second hydraulic system include the second hydraulic oil container 28 and the second hydraulic pump 27, second hydraulic pump 27
Oil-in is connected with the second hydraulic oil container 28 by the 3rd hydraulic tube, and the oil-in of second hydraulic jack 18 passes through the 4th liquid
Pressure pipe is connected with the oil-out of the second hydraulic pump 27, is connected with second pressure table 25 and the second overflow valve on the 4th hydraulic tube
26。
The method that coal and gas prominent simulated experiment is carried out using said apparatus specifically includes following steps：
Step one, opening case lid 2-3, coal dust to be tested are loaded in prominent casing in five times, after loading coal dust every time
Electronic universal tester 1 is opened, the coal dust in prominent casing is further applied load by being compressed axially piston 2-1, after coal dust is installed
It is coal sample 17 that pulverized coal forming is made according to pre-set briquetting pressure；
Step 2, case lid 2-3 and box-like body 2-6 are tightly connected, take down prominent plug 2-12, to aspis 2-13 with
Sealed between coal sample 17 (preferably adopt and sealed with the basic identical encapsulant of 17 intensity of coal sample), then with protrusion
Plug 2-12 blocks aspis 2-13；
Step 3, the first hydraulic jack 16 of unlatching and the second hydraulic jack 18, apply stable initial value to coal sample 17, together
Shi Kaiqi methane gas tank 12, the air-tightness of the prominent casing of detection；
After step 4, air-leakage test terminate, the first hydraulic jack 16, the second hydraulic jack 18 and methane gas tank are closed
12, open air compressor 11 and coal sample 17 is de-gassed, after the completion of degassing, close air compressor 11；
After step 5, coal sample 17 deaerate, electronic universal tester 1, the first hydraulic jack 16 and the second hydraulic jack are opened
18, initial pressure is applied to coal sample 17, methane gas tank 12 is tightly connected with axial air-filled pore 2-2, base air-filled pore 2-14,
The flow for adjusting methane gas tank 12 causes gas pressure to reach preset value and keep stable, by axial air-filled pore 2-2 and bottom
Seat air-filled pore 2-14 is inflated to the coal sample 17 in prominent casing, inflationtime at least 32h, makes the fully absorption watt of coal sample 17
This；
Step 6, treat 17 adsorption gas of coal sample after the completion of carry out coal and gas prominent simulated experiment, by electronic universal try
Test machine 1 and axle pressure is applied to coal sample 17, open the first hydraulic jack 16 and the second hydraulic jack 18 and confined pressure is applied to coal sample 17, pass through
Methane gas tank 12 applies gas pressure to coal sample 17, it is stable stop to after there is coal and gas prominent immediately axle pressure, confined pressure and
The loading of gas pressure, records and preserves experimental data, closes all loading equipemtns.
The above, is only presently preferred embodiments of the present invention, and any restriction is not done to the present invention, every according to invention skill
Any simple modification, change and equivalent structure change that art is substantially made to above example, still fall within the technology of the present invention
In the protection domain of scheme.
Claims (10)
1. a kind of coal and gas prominent analogue experiment installation, it is characterised in that：Including crustal stress simulated loading system, gas pressure
Simulated loading system, acoustic emission system, prominent casing and computer (13)；The crustal stress simulated loading system includes electronics ten thousand
Energy testing machine (1), the first hydraulic jack (16) and the second hydraulic jack (18), the prominent casing centering are placed on electronic universal
On the base of testing machine (1), the electronic universal tester (1), the first hydraulic jack (16) and the second hydraulic jack (18) are
It is connected with computer (13)；First hydraulic jack (16) and the second hydraulic jack (18) are respectively arranged in prominent casing
On two neighboring side wall；
The prominent casing includes the box-like body (2-6) of upper end open and the cabinet base being located at below box-like body (2-6)
(2-8), the upper end of the box-like body (2-6) is provided with case lid (2-3), is provided with axial pressure in the middle part of the case lid (2-3)
Contracting piston (2-1), it is described be compressed axially piston (2-1) and be provided with the axial direction being connected with box-like body (2-6) internal cavity fill
Pore (2-2), is provided with the base air-filled pore (2-14) being connected with the cavity, the axle on the cabinet base (2-8)
Gas pipeline (2-16) is connected with air-filled pore (2-2), on the gas pipeline (2-16), gas service pipe (2-9) is connected with,
The gas service pipe (2-9) is connected with base air-filled pore (2-14), on the box-like body (2-6) and with the second hydraulic jack
(18) aspis (2-13) is offered on relative side wall, dismountable prominent plug on the aspis (2-13), is provided with
(2-12), on the box-like body (2-6) and be located at aspis (2-13) on the outside of be provided with simulation tunnel device；The casing
Acoustic emission probe (19) and pressure sensor (22) are provided with simulation tunnel bottom of device on the inside of base (2-8)；
The gas pressure simulated loading system includes methane gas tank (12) and air compressor (11)；The methane gas tank
(12) it is connected with gas pipeline (2-16) by the first pipeline (30), air compressor (11) is by the second pipeline (31) and gas
Pipeline (2-16) connects；
The acoustic emission system includes Acoustic radiating instrument (15), input and acoustic emission probe (19) phase of the Acoustic radiating instrument (15)
Even.
2. according to a kind of coal and gas prominent analogue experiment installation described in claim 1, it is characterised in that：Also adopt including data
Collection instrument (14), the input of the data collecting instrument (14) is connected with pressure sensor (22), the Acoustic radiating instrument (15) it is defeated
The output end for going out end and data collecting instrument (14) is connected with computer (13).
3. according to a kind of coal and gas prominent analogue experiment installation described in claim 1, it is characterised in that：Case lid (the 2-
3) top board (2-5) is provided with the inside of, is provided with the middle part of the case lid (2-3) and is compressed axially piston hole, be compressed axially piston
(2-1) it is flexibly connected with top board (2-5) through the piston hole that is compressed axially, is provided with and institute on the top board (2-5)
The central gas hole (2-4) that cavity is connected is stated, the central gas hole (2-4) is positioned at the underface of axial air-filled pore (2-2)
And be connected with axial air-filled pore (2-2), it is provided with the side wall of the first hydraulic jack (16) on the box-like body (2-6) and sets
The first side guide (2-7) is equipped with, the compression piston of the first hydraulic jack (16) is through box-like body (2-6) and the first side guide
(2-7) it is flexibly connected, is provided with box-like body (2-6) in the side wall of the second hydraulic jack (18) and is provided with the second side guide
(2-11), the compression piston of the second hydraulic jack (18) is flexibly connected through box-like body (2-6) with the second side guide (2-11).
4. according to a kind of coal and gas prominent analogue experiment installation described in claim 3, it is characterised in that：The top board
(2-5) lower surface is concordant with the lower surface of case lid (2-3), inner surface and the box-like body (2- of first side guide (2-7)
6) inner surface that the side wall of the first hydraulic jack (16) is provided with is concordant, the inner surface and case of second side guide (2-11)
The inner surface that the side wall of the second hydraulic jack (18) is provided with body body (2-6) is concordant；It is provided with the top board (2-5)
Multiple top board air-filled pores (2-15), the top board air-filled pore (2-15) are connected with axial air-filled pore (2-2) and the cavity
It is logical.
5. according to a kind of coal and gas prominent analogue experiment installation described in any claim in Claims 1-4, its feature
It is：The case lid (2-3) and box-like body (2-6) are bolt connection；Between the box-like body (2-6) and case lid (2-3),
Be compressed axially between piston (2-1) and case lid (2-3), the compression piston of the first hydraulic jack (16) and box-like body (2-6) it
Between, between the compression piston of the second hydraulic jack (18) and box-like body (2-6) and aspis (2-13) with simulation tunnel device
Between be provided with sealing ring.
6. according to a kind of coal and gas prominent analogue experiment installation described in any claim in Claims 1-4, its feature
It is：Simulation tunnel device includes transparent tunnel (20), and the transparent tunnel (20) is installed on box-like body by bolt
(2-6), on, transparent tunnel (20) is provided with the transparent Photo Studio (29) of closing, institute in the middle part of the one end away from box-like body (2-6)
State in Photo Studio (29) and high-speed camera (21) is installed, transparent tunnel (20) is provided with away from the end of box-like body (2-6)
Pressure relief opening (23), the bottom of the cabinet base (2-8) and transparent tunnel (20) are provided with routing hole (2-10), and sound emission is visited
The wire of head (19) is connected through routing hole (2-10) with Acoustic radiating instrument (15).
7. according to a kind of coal and gas prominent analogue experiment installation described in claim 6, it is characterised in that：The transparent tunnel
(20) bottom is provided with for supporting the base (24) of transparent tunnel (20).
8. according to a kind of coal and gas prominent analogue experiment installation described in claim 1, it is characterised in that：First pipeline
(30) gas pressure table (7) and pressure-reducing valve (8) are provided with, the pressure-reducing valve (8) is positioned at gas pressure table (7) and methane gas
Between tank (12), vacuum table (10) and intake valve (9) on second pipeline (31), are provided with, the intake valve (9) is positioned at negative
Between pressure table (10) and air compressor (11).
9. according to a kind of coal and gas prominent analogue experiment installation described in claim 1, it is characterised in that：First hydraulic pressure
Oil cylinder (16) includes the first hydraulic oil container (6) and the first hydraulic pump by the first hydraulic system fuel feeding, first hydraulic system
(5), the oil-in of first hydraulic pump (5) is connected with the first hydraulic oil container (6) by the first hydraulic tube, first hydraulic pressure
The oil-in of oil cylinder (16) is connected with the oil-out of the first hydraulic pump (5) by the second hydraulic tube, is connected on second hydraulic tube
It is connected to first pressure table (3) and the first overflow valve (4)；Second hydraulic jack (18) is by the second hydraulic system fuel feeding, institute
Stating the second hydraulic system includes the second hydraulic oil container (28) and the second hydraulic pump (27), the oil-in of second hydraulic pump (27)
It is connected with the second hydraulic oil container (28) by the 3rd hydraulic tube, the oil-in of second hydraulic jack (18) passes through the 4th hydraulic pressure
Pipe is connected with the oil-out of the second hydraulic pump (27), is connected with second pressure table (25) and the second overflow on the 4th hydraulic tube
Valve (26).
10. in a kind of employing Claims 1-4, any claim described device carries out the side of coal and gas prominent simulated experiment
Method, it is characterised in that：Comprise the following steps：
Step one, opening case lid (2-3), coal dust to be tested is loaded in prominent casing, electronic universal tester (1) is opened,
The coal dust in prominent casing is further applied load by being compressed axially piston (2-1), makes pulverized coal forming be coal sample (17)；
Step 2, case lid (2-3) is tightly connected with box-like body (2-6), takes down prominent plug (2-12), to aspis (2-
13) sealed and coal sample (17) between, then aspis (2-13) is blocked with prominent plug (2-12)；
Step 3, the first hydraulic jack of unlatching (16) and the second hydraulic jack (18), apply stable initial value to coal sample (17),
Methane gas tank (12), the air-tightness of the prominent casing of detection are opened simultaneously；
After step 4, air-leakage test terminate, the first hydraulic jack (16), the second hydraulic jack (18) and methane gas tank are closed
(12), open air compressor (11) to be de-gassed coal sample (17), after the completion of degassing, close air compressor (11)；
After step 5, coal sample (17) degassing, electronic universal tester (1), the first hydraulic jack (16) and the second hydraulic oil are opened
Cylinder (18), applies initial pressure to coal sample (17), by methane gas tank (12) and axial air-filled pore (2-2), base air-filled pore (2-
14) it is tightly connected, the flow for adjusting methane gas tank (12) causes gas pressure to reach preset value and keep stable, by axial direction
Air-filled pore (2-2) is inflated to the coal sample (17) in prominent casing with base air-filled pore (2-14), makes coal sample (17) absorption watt
This；
Step 6, treat coal sample (17) adsorption gas after the completion of carry out coal and gas prominent simulated experiment, by electronic universal test
Machine (1) applies axle pressure to coal sample (17), opens the first hydraulic jack (16) and the second hydraulic jack (18) and coal sample (17) is applied
Confined pressure, applies gas pressure by methane gas tank (12) to coal sample (17), stable to stop to after there is coal and gas prominent immediately
The only loading of axle pressure, confined pressure and gas pressure, records and preserves experimental data, closes all loading equipemtns.
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| CN107389859A (en) * | 2017-06-26 | 2017-11-24 | 重庆大学 | Man-machine ring is damaged simulation experiment method in coal and gas prominent Catastrophe Process |
| CN107576774A (en) * | 2017-10-18 | 2018-01-12 | 西安科技大学 | Coal seam containing gas mechanical characteristic analogue experiment installation and method under uniaxial compression |
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| CN113341102A (en) * | 2021-06-03 | 2021-09-03 | 重庆工程职业技术学院 | Coal and gas outburst simulation experiment device and method thereof |
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