CN107843620A - A kind of underground coal mine varying strength gas explosion blast injury test method - Google Patents
A kind of underground coal mine varying strength gas explosion blast injury test method Download PDFInfo
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Abstract
The invention discloses a kind of underground coal mine varying strength gas explosion blast injury test method.Pipeline, ring flange, bolt and nut, pressure sensor, temperature sensor, experiment rat, electrode, AC power, vavuum pump, digital vacuum meter, methane gas cylinder, air compressor machine, circulating pump, pressure valve, inlet valve, intake valve, first circulation valve, second circulation valve, oxygen concentration detector, obstacle piece, diaphragm, diaphragm seal, shim, dynamic data acquisition, high-speed camera instrument, host computer and sample tap are connected into pilot system and carry out experiment by it；Wherein, the quantity for testing rat is 4~8,50% non-death experiments rat is put into hypoxemia cabin after blast observed every time, hypoxemia cabin is connected with the hypoxemia bottle of oxygen concentration 8%~15%.The present invention can carry out different pipe networks under the conditions of, gas explosion blast injury is tested under different gas explosion intensity, injury difference, blast injury target organ and Injury Thresholds of the research gas explosion to human body Different Organs.
Description
Technical field
The present invention relates to coal mine gas diaster prevention and control field, more particularly, to a kind of underground coal mine varying strength gas explosion
Blast injury test method.
Background technology
China's coal-mine is exploited based on pit mining, is continuously increased with the depth of exploitation, high methane pressure, high-ground stress
Problem continues to bring out, wherein being exactly gas explosion and coal and gas prominent than more typical problem.Gas explosion is as main coal
One of mine disaster evil, it can cause tunnel, supporting, the heavy damage of apparatus, and substantial amounts of casualties.According to statistics, build
Since state colliery death toll more than 100 people disaster accident statistical form, because death toll accounts for caused by gas explosion
82%.How the safety of people and primary starting point and basic point that health is Safety Work in Colliery, reduce Gas Disaster accident pair
The injures and deaths that operating personnel brings are the centers of gravity of Safety Work in Colliery all the time.For this reason, it is necessary to carry out gas explosion to human body
Injury further investigation, support is provided for gas explosion preventing and treating.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of underground coal mine varying strength gas explosion blast injury experiment side
Method.Concrete technical scheme is as follows：
A kind of underground coal mine varying strength gas explosion blast injury test method, it includes：
(1) by pipeline, ring flange, bolt and nut, pressure sensor, temperature sensor, experiment rat, electrode, alternating current
Source, vavuum pump, digital vacuum meter, methane gas cylinder, air compressor machine, circulating pump, pressure valve, inlet valve, intake valve, first circulation valve,
Second circulation valve, oxygen concentration detector, obstacle piece, diaphragm, diaphragm seal, shim, dynamic data acquisition, high-speed camera instrument,
Host computer and sample tap connect into pilot system；Wherein, the diaphragm is polythene material, thickness is 0.5~2mm, diameter ratio
Big 1~the 3cm of pipe diameter, pilot system is divided into premix accelerating sections and impact propagation segment two parts by diaphragm, and premixes accelerating sections
Pipeline be steel pipe, the pipeline for impacting propagation segment is high intensity lucite tube；The quantity of the experiment rat is 4~8；Institute
It is two metal bars to state electrode, and one end connects AC power, other end connection fuse；The AC power exchanges for 24~48V
Electricity；The obstacle piece is annulus iron pan, and annulus iron pan internal diameter is pipe diameter 1/3~1/2；
(2) pressure valve and air compressor machine are successively opened in order, keep inlet valve, intake valve, first circulation valve and second to follow
The closed mode of ring valve, the air-tightness of premix accelerating sections is checked, after it is determined that premix accelerating sections is air tight, successively closed in order
Air compressor machine and pressure valve；
(3) digital vacuum meter and inlet valve are opened, keeps pressure valve, intake valve, first circulation valve and second circulation valve
Closed mode, open vavuum pump and premix accelerating sections is vacuumized；Vavuum pump is closed after reaching experiment and needing vacuum, is opened
Open intake valve and methane gas cylinder carries out methane gas dispatching, after volume fraction methane gas needed for experiment, in order first
Methane gas cylinder and intake valve are closed afterwards；
(4) after first circulation valve and second circulation valve is opened, open the circulation pump is to methane and air in premix accelerating sections
Carry out premix stirring, circulating pump closed after 10~20min of pump work is circulated, after turn off first circulation valve and second circulation
Valve；After checking that mixed gas is in atmospheric pressure in premix accelerating sections, inlet valve and digital vacuum meter are closed；
(5) dynamic data acquisition and high-speed camera instrument are separately turned on, opens data acquisition software respectively in host computer
With high-speed camera software, the trigger parameter of pressure sensor and temperature sensor is set, while high-speed camera instrument is arranged to interior
Triggering, and dynamic data acquisition and high-speed camera instrument is in and is gathered state to be triggered；
(6) closed mode of pressure valve, inlet valve, intake valve, first circulation valve and second circulation valve is kept, opens exchange
Power supply is lighted a fire to electrode, is exploded at electrode, and dynamic number is triggered during being propagated along impact propagation segment
Pressure signal and temperature signal collection are carried out according to collector and high-speed camera instrument carries out image information collecting；Host computer preserves pipe
The information of the pressure sensor of each position, temperature sensor and the collection of high-speed camera instrument in road；Simultaneously from oxygen concentration detector
Read oxygen concentration numerical value；
(7) take out 10~100ml explosion gas from sample tap and carry out constituent analysis；
(8) microexamination that dead experiment rat carries out inner ear and lung is taken out, records degree of impairment；Simultaneously will be not dead
Experiment rat the two parts of quantity such as be divided into, Part I is carried out under 30 minutes to 3 hours anaerobic conditions still in pipeline
Activities in rats and physical condition observation are tested, Part II is removed and placed in hypoxemia cabin, carries out 30 minutes to 3 hours hypoxemia shapes
Activities in rats and physical condition observation are tested under state；Wherein, the hypoxemia cabin is connected with hypoxemia bottle, and hypoxemia bottle is oxygen concentration 8%
~15% air bottle；
(9) experiment rat in pipeline is taken out, keeps the closing of inlet valve, intake valve, first circulation valve and second circulation valve
State, pressure valve and air compressor machine are successively opened in order, to carrying out malleation purging into premix accelerating sections and impact propagation segment, remove
Internal waste gas, air compressor machine and pressure valve are successively closed after 20~30min in order；
(10) change the fuse between diaphragm and electrode, be put into new a collection of experiment rat by (2)~(9), carry out respectively
Gas explosion blast injury is tested under the conditions of premixing piece 1,2 and 3 of being placed obstacles in accelerating sections；
(11) pressure, temperature and image information to being preserved in host computer, and the oxygen concentration information of collection and examination are passed through
Rat observed information is tested to be analyzed and handled, find after exploding under the conditions of single pipe network, varying strength gas explosion gas into
Divide changing rule, cause blast injury power changing rule and to animal injury distribution situation and target organ damage feature.
Further, varying strength gas explosion blast injury under the conditions of bifurcated pipe network can be carried out by removing shim to try
Test.
The beneficial effects of the invention are as follows：Under the conditions of can carrying out different pipe networks by the present invention, under different gas explosion intensity
Gas explosion blast injury is tested, and finds coal mine down-hole tunnel constituent of air changing rule, gas explosion shocking damage change rule
Rule, and injury difference, blast injury target organ and Injury Thresholds to human body Different Organs.
Brief description of the drawings
Fig. 1 is the test system architecture schematic diagram of the present invention.
Fig. 2 is obstacle piece, diaphragm, diaphragm seal and shim schematic diagram.
Fig. 3 is obstacle piece pictorial diagram.
Fig. 4 is hypoxemia bottle and hypoxemia cabin connection diagram.
Wherein：1- pipelines；2- ring flanges；3- bolt and nuts；4- pressure sensors；5- temperature sensors；6- tests rat；
7- electrodes；8- AC powers；9- vavuum pumps；10- numeral vacuum meters；11- methane gas cylinders；12- air compressor machines；13- circulating pumps；14-
Pressure valve；15- inlet valves；16- intake valves；17- first circulation valves；18- second circulation valves；19- oxygen concentration detectors；20- hinders
Hinder piece；21- diaphragms；22- diaphragm seals；23- shims；24- dynamic data acquisitions；25- high-speed camera instrument；26- host computers；
27- sample taps；31- hypoxemia bottles；32- hypoxemia cabin.
Embodiment
The present invention is further elaborated with reference to the accompanying drawings and examples.
As embodiment, a kind of underground coal mine varying strength gas explosion blast injury test method, it includes：
(1) it is as shown in figure 1, pipeline 1, ring flange 2, bolt and nut 3, pressure sensor 4, temperature sensor 5, experiment is big
Mouse 6, electrode 7, AC power 8, vavuum pump 9, digital vacuum meter 10, methane gas cylinder 11, air compressor machine 12, circulating pump 13, pressure valve
14th, inlet valve 15, intake valve 16, first circulation valve 17, second circulation valve 18, oxygen concentration detector 19, obstacle piece 20, diaphragm
21st, diaphragm seal 22, shim 23, dynamic data acquisition 24, high-speed camera instrument 25, host computer 26 and sample tap 27 connect into examination
Check system；Wherein, obstacle piece, diaphragm, diaphragm seal and shim schematic diagram are as shown in Fig. 2 diaphragm 21 is polythene material, thickness
Bigger 1~3cm than the diameter of pipeline 1 for 0.5~2mm, diameter, pilot system is divided into premix accelerating sections and impact propagation segment by diaphragm 21
Two parts, and the pipeline 1 for premixing accelerating sections is steel pipe, the pipeline 1 for impacting propagation segment is high intensity lucite tube；Test rat
6 quantity is 4~8；Electrode 7 is two metal bars, and one end connects AC power 8, other end connection fuse；AC power 8
For 24~48V alternating currents；As shown in figure 3, obstacle piece 21 is annulus iron pan, annulus iron pan internal diameter is the diameter 1/3~1/2 of pipeline 1；
(2) pressure valve 14 and air compressor machine 12 are successively opened in order, keep inlet valve 15, intake valve 16, first circulation valve
17 and the closed mode of second circulation valve 18, the air-tightness of premix accelerating sections is checked, after it is determined that premix accelerating sections is air tight, is pressed
Order successively closes air compressor machine 12 and pressure valve 14；
(3) digital vacuum meter 10 and inlet valve 15 are opened, keeps pressure valve 14, intake valve 16, first circulation valve 17 and the
The closed mode of two circulating valves 18, open vavuum pump 9 and premix accelerating sections is vacuumized；After reaching experiment and needing vacuum
Vavuum pump 9 is closed, intake valve 16 is opened and methane gas cylinder 11 carries out methane gas dispatching, to be charged into volume fraction first needed for experiment
After alkane gas, methane gas cylinder 11 and intake valve 16 are successively closed in order；
(4) after first circulation valve 17 and second circulation valve 18 is opened, open the circulation pump 13 is to methane in premix accelerating sections
Carry out premix stirring with air, circulating pump 13 work 10~20min after close circulating pump 13, after turn off first circulation valve 17
With second circulation valve 18；After checking that mixed gas is in atmospheric pressure in premix accelerating sections, inlet valve 15 and digital vacuum are closed
Table 10；
(5) dynamic data acquisition 24 and high-speed camera instrument 25 are separately turned on, data is opened respectively in host computer 26 and adopts
Collect software and high-speed camera software, the trigger parameter of pressure sensor 4 and temperature sensor 5 is set, while by high-speed camera instrument
25 are arranged to internal trigger, and dynamic data acquisition 24 and high-speed camera instrument 25 is in and is gathered state to be triggered；
(6) the closing shape of pressure valve 14, inlet valve 15, intake valve 16, first circulation valve 17 and second circulation valve 18 is kept
State, open AC power 8 and electrode 7 is lighted a fire, exploded at electrode 7, in the mistake propagated along impact propagation segment
Dynamic data acquisition 24 is triggered in journey and carries out pressure signal and temperature signal collection and the progress image letter of high-speed camera instrument 25
Breath collection；Host computer 26 preserves what the pressure sensor 4 of each position, temperature sensor 5 and high-speed camera instrument 25 in pipeline gathered
Information；Oxygen concentration numerical value is read from oxygen concentration detector 19 simultaneously；
(7) take out 10~100ml explosion gas from sample tap 27 and carry out constituent analysis；
(8) microexamination that dead experiment rat 6 carries out inner ear and lung is taken out, records degree of impairment；Simultaneously will be not dead
The experiment rat 6 died such as is divided at the two parts of quantity, and Part I carries out 30 minutes to 3 hours anoxic shapes still in pipeline
The activity of rat 6 and physical condition observation are tested under state, Part II is removed and placed in hypoxemia cabin 32, is carried out 30 minutes to 3 small
When hypoxia under test the activity of rat 6 and physical condition observation；Wherein, as shown in figure 4, hypoxemia cabin 32 connects with hypoxemia bottle 31
Connect, hypoxemia bottle 31 is the air bottle of oxygen concentration 8%~15%；
(9) experiment rat 6 in pipeline is taken out, keeps inlet valve 15, intake valve 16, first circulation valve 17 and second circulation valve
18 closed mode, pressure valve 14 and air compressor machine 12 are successively opened in order, to being carried out into premix accelerating sections and impact propagation segment
Malleation purges, and removes internal waste gas, air compressor machine 12 and pressure valve 14 are successively closed in order after 20~30min；
(10) change the fuse between diaphragm 21 and electrode 7, be put into new a collection of experiment rat 6 by (2)~(9), open respectively
Exhibition gas explosion blast injury under the conditions of piece 1,2 and 3 of being placed obstacles in accelerating sections is premixed is tested；
(11) by pressure, temperature and the image information to preserving in host computer 26, and the oxygen concentration information of collection and
The experiment observed information of rat 6 is analyzed and handled, and finds gas after exploding under the conditions of single pipe network, varying strength gas explosion
Composition transfer rule, cause blast injury power changing rule and to animal injury distribution situation and target organ damage feature.
Tried next, varying strength gas explosion blast injury under the conditions of bifurcated pipe network can be carried out by removing shim 23
Test.
Finally it should be noted that described above is only technical scheme, rather than its protection domain is made any
Limitation, the related amendments or equivalent substitution that every those skilled in the art is carried out according to the present invention program, still falls within the present invention
The protection domain of technical scheme.
Claims (2)
1. a kind of underground coal mine varying strength gas explosion blast injury test method, it is characterised in that this method includes
(1) by pipeline, ring flange, bolt and nut, pressure sensor, temperature sensor, experiment rat, electrode, AC power, true
Empty pump, digital vacuum meter, methane gas cylinder, air compressor machine, circulating pump, pressure valve, inlet valve, intake valve, first circulation valve, second follow
Ring valve, oxygen concentration detector, obstacle piece, diaphragm, diaphragm seal, shim, dynamic data acquisition, high-speed camera instrument, host computer
Pilot system is connected into sample tap；Wherein, the diaphragm is polythene material, thickness is 0.5~2mm, diameter is more straight than pipeline
Big 1~the 3cm in footpath, pilot system is divided into premix accelerating sections and impact propagation segment two parts by diaphragm, and premixes the pipeline of accelerating sections
For steel pipe, the pipeline for impacting propagation segment is high intensity lucite tube；The quantity of the experiment rat is 4~8；The electrode
For two metal bars, one end connection AC power, other end connection fuse；The AC power is 24~48V alternating currents；It is described
Obstacle piece is annulus iron pan, and annulus iron pan internal diameter is pipe diameter 1/3~1/2；
(2) pressure valve and air compressor machine are successively opened in order, keep inlet valve, intake valve, first circulation valve and second circulation valve
Closed mode, check premix accelerating sections air-tightness, it is determined that premix accelerating sections it is air tight after, in order successively close pneumatics
Machine and pressure valve；
(3) digital vacuum meter and inlet valve are opened, keeps the closing of pressure valve, intake valve, first circulation valve and second circulation valve
State, open vavuum pump and premix accelerating sections is vacuumized；Close vavuum pump after reaching experiment and needing vacuum, open into
Air valve and methane gas cylinder carry out methane gas dispatching, after volume fraction methane gas needed for experiment, successively close in order
Close methane gas cylinder and intake valve；
(4) after first circulation valve and second circulation valve is opened, open the circulation pump is carried out to methane in premix accelerating sections and air
Premix stirring, close circulating pump after 10~20min of pump work is circulated, after turn off first circulation valve and second circulation valve；
After checking that mixed gas is in atmospheric pressure in premix accelerating sections, inlet valve and digital vacuum meter are closed；
(5) dynamic data acquisition and high-speed camera instrument are separately turned on, opens data acquisition software and height respectively in host computer
Fast photography software, sets the trigger parameter of pressure sensor and temperature sensor, while high-speed camera instrument is arranged into internal trigger,
And dynamic data acquisition and high-speed camera instrument is set to be in and gather state to be triggered；
(6) closed mode of pressure valve, inlet valve, intake valve, first circulation valve and second circulation valve is kept, opens AC power
Electrode is lighted a fire, exploded at electrode, dynamic data is triggered during being propagated along impact propagation segment and adopts
Storage carries out pressure signal and temperature signal collection and high-speed camera instrument carries out image information collecting；Host computer is preserved in pipeline
Pressure sensor, temperature sensor and the information of high-speed camera instrument collection of each position；Read simultaneously from oxygen concentration detector
Oxygen concentration numerical value；
(7) take out 10~100ml explosion gas from sample tap and carry out constituent analysis；
(8) microexamination that dead experiment rat carries out inner ear and lung is taken out, records degree of impairment；Simultaneously by not dead examination
Two parts that rat such as is divided at the quantity are tested, Part I still in pipeline test under anaerobic condition within 30 minutes to 3 hours
Activities in rats and physical condition observation, Part II are removed and placed in hypoxemia cabin, are carried out under 30 minutes to 3 hours hypoxias
Test activities in rats and physical condition observation；Wherein, the hypoxemia cabin is connected with hypoxemia bottle, hypoxemia bottle be oxygen concentration 8%~
15% air bottle；
(9) experiment rat in pipeline is taken out, keeps the closed mode of inlet valve, intake valve, first circulation valve and second circulation valve,
Pressure valve and air compressor machine are successively opened in order, to carrying out malleation purging into premix accelerating sections and impact propagation segment, are removed internal
Waste gas, air compressor machine and pressure valve are successively closed after 20~30min in order；
(10) change the fuse between diaphragm and electrode, be put into new a collection of experiment rat by (2)~(9), carry out premixing respectively
Gas explosion blast injury under the conditions of piece 1,2 and 3 of being placed obstacles in accelerating sections is tested；
(11) by the pressure, temperature and image information to being preserved in host computer, and the oxygen concentration information of collection and experiment are greatly
Mouse observed information is analyzed and handled, and is found gas componant after exploding under the conditions of single pipe network, varying strength gas explosion and is become
Law, cause blast injury power changing rule and to animal injury distribution situation and target organ damage feature.
2. a kind of underground coal mine varying strength gas explosion blast injury test method according to claim 1, its feature exist
In can carry out varying strength gas explosion blast injury under the conditions of bifurcated pipe network by removing shim and test.
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| CN115822536A (en) * | 2023-02-08 | 2023-03-21 | 太原理工大学 | Carbon dioxide injection displacement type coalbed methane collecting device and using method thereof |
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