CN105388091A - Mine foam fluid material fire extinguishing characteristic test device and mine foam fluid material fire extinguishing characteristic test method - Google Patents
Mine foam fluid material fire extinguishing characteristic test device and mine foam fluid material fire extinguishing characteristic test method Download PDFInfo
- Publication number
- CN105388091A CN105388091A CN201510944038.9A CN201510944038A CN105388091A CN 105388091 A CN105388091 A CN 105388091A CN 201510944038 A CN201510944038 A CN 201510944038A CN 105388091 A CN105388091 A CN 105388091A
- Authority
- CN
- China
- Prior art keywords
- model
- fire extinguishing
- vacuum
- test
- aerated fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention discloses a mine foam fluid material fire extinguishing characteristic test device including a lifting-type perfusion apparatus, a model test rack, a filling media model and a monitoring device, the lifting-type perfusion apparatus and the model test rack are in connection, the filling media model is put in the model test rack, a hidden high temperature fire source point and a plurality of earth pressure gauges and thermocouples are embedded in the filling media model, and the earth pressure gauges and the thermocouples are connected with a detection system outside the model test rack by wires. Detection of foam fluid fire extinguishing characteristic three indicators comprising seepage rules, cooling properties and wind plugging characteristics can be simultaneously completed only by one simulation test, the tedious experimental determination can be greatly reduced, and due to arrangement of the hidden high temperature fire source point in the device, foam fluid cooling effect on the hidden source can be simulated and measured. The present invention also discloses a mine foam fluid material fire extinguishing characteristic test method.
Description
Technical field
The present invention relates to mine safety field, particularly a kind of mine foam fluent material fire extinguishing characteristic test device and method.
Background technology
Spontaneous combustion of coal is one of Major Natural Disasters in coal production, and it not only burns or freezes a large amount of coal resources, and often can cause particularly serious gas explosion disaster accident, causes casualties and economic loss.At present mainly contain slip casting, note noble gas, note retarder, gel-filled and note foam etc. for the method for mine coal spontaneous combustion control, these technology play an important role in mine coal spontaneous combustion control, wherein aerated fluid material fire extinguishing Be very effective, advantages, not only effectively can prevent and treat spontaneous combustion of coal, and can also prevent from leaking out by shutoff broken coal well, being specially adapted to the control that position burning things which may cause a fire disaster and caving place spontaneous combustion of coal are failed to understand in goaf, is a kind of new type mining fireproofing extinguishing materials with broad prospect of application and promotional value.And aerated fluid pressure injection is a very complicated process, effectively arriving the crack needing shutoff and high temp fire source point region to enable aerated fluid, to be necessary to carry out in pressure injection process the seepage flow of itself, diffusion, migration rule research; Simultaneously in order to reach extinguishing effect, must test aerated fluid fire extinguishing characteristic.
Although academicly have a lot about the performance-relevant research of mining fireproofing extinguishing materials at present, be not specifically related to a kind of apparatus and method of full test mine foam fluid fire extinguishing characteristic.As scholar Qin Botao at " fire extinguishing three-phase froth fluid behaviour experimental study " though have in a literary composition and relate to the research of aerated fluid material behavior, be not specifically related to the fire extinguishing characteristic of aerated fluid material, do not provide yet a sleeve forming proving installation.Chinese Patent Application No. CN201220745453.3, publication date 2013.07.03, disclose a kind of colliery lost circulation material every wind performance testing device, although this contrive equipment can test lost circulation material every wind performance, can not be used for studying mine foam fluent material seepage flow, diffusion, migration rule and cooling-down effect.In sum, be necessary invention a set of can full test mine foam fluent material fire extinguishing characteristic test device and method.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides one can simultaneously test material percolation law, cooling characteristic and wind leaking stoppage characteristic, and simulated determination goes out the mine foam fluent material fire extinguishing characteristic test device of aerated fluid to concealed fire cooling-down effect, present invention also offers a kind of mine foam fluent material fire extinguishing characteristic test method.
The technical scheme that the present invention solves the problem is: a kind of mine foam fluent material fire extinguishing characteristic test device, comprise lift device for casting, model test frame, filled media model and monitoring device, described lift device for casting has been connected the perfusion of aerated fluid with model test frame, described filled media model is placed in model test frame, bury a hidden high temp fire source point and multiple earth pressure gauge, thermopair in filled media model underground, described earth pressure gauge, thermopair are connected with the detection system outside model test frame by wire.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, described model test frame is divided into the simulation region of the first half and the vacuum test cavity of the latter half, filled media model is placed in simulation region, the sidewall of simulation region is provided with the perfusing hole for connecting lift device for casting, the base plate of simulation region is provided with the intercommunicating pore be connected with vacuum test cavity, be provided with drawer in vacuum test cavity, drawer and vacuum test cavity surrounding glass cement seal.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, the simulation region of described model test frame is transparent organic glass material, and the vacuum test cavity of model test frame is wood quality.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, described lift device for casting comprises metal bucket, described metal bucket hangs on escalator, the top bandage of metal bucket is connected with crane, the bottom of metal bucket is provided with outlet, described outlet is connected with the perfusing hole on model test frame by pipeline, and pipeline is provided with valve.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, described monitoring device comprises seepage pressure monitoring system, seepage flow diffusion plane image real-time collecting system, vacuum chamber negative pressure monitoring system and hidden high temperature dot temperature monitoring system, described seepage pressure monitoring system comprises statical strain indicator and the first computing machine, first computing machine is connected with statical strain indicator, statical strain indicator is connected with earth pressure gauge, described seepage flow diffusion plane image real-time collecting system comprises kinetic analyzer and second computer, second computer is connected with kinetic analyzer, kinetic analyzer is just arranged model test frame, described vacuum chamber negative pressure monitoring system comprises pressure vacuum gauge and vacuum pump, pressure vacuum gauge is arranged on vacuum test cavity wall, vacuum pump is connected with vacuum test cavity by the vacuum orifice on vacuum test cavity wall, described hidden high temperature dot temperature monitoring system comprises Digital Measurement of Temperature table, Digital Measurement of Temperature table is connected with thermopair.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, in described filled media model, stuff are coal particle and gangue rock, and adopt layering to lay.
In above-mentioned mine foam fluent material fire extinguishing characteristic test device, described hidden high temp fire source point is the honeycomb briquette lighted.
A kind of mine foam fluent material fire extinguishing characteristic test method, step is as follows:
Step one: filled media model is laid in layering, buries earth pressure gauge, thermopair, hidden high temp fire source point in filled media model underground;
Step 2: connect monitoring equipment, with wire, earth pressure gauge is connected with statical strain indicator, thermopair and Digital Measurement of Temperature list catenation, debugging kinetic analyzer, carries out the automatic zero set (AZS) of statical strain indicator;
Step 3: carry out seepage flow cooling experiment, the aerated fluid that will test is poured in lift device for casting, adjustable height is regulated by escalator, open valve, carry out perfusion experiment, overall process real-time recording, and recorded monitoring probe data, analyze stress and corresponding diffusion image, in conjunction with foam fluid viscosity parameter, draw seepage flow Diffusion Law; Check in the drawer of vacuum test cavity whether have discharge opeing water simultaneously, if having, the quality of discharge opeing water is weighed, draw the thermal stability of aerated fluid; Record Digital Measurement of Temperature table data, analyze the cooling characteristic drawing aerated fluid;
Step 4: treat that seepage flow cooling experiment terminates, with vacuum pump by the negative pressure drop of vacuum test cavity extremely-2000Pa, carries out leak stopping every wind performance test, observes negative pressure variation by pressure vacuum gauge, analyze and show that the leak stopping of aerated fluid is every wind performance;
Step 5: cleaning model, and get coal petrography and aerated fluid induration sample, in order to both analyses consolidation face situation.
Above-mentioned mine foam fluent material fire extinguishing characteristic test method, in described step one, in coal column module, crack porosity is set to 0.15; Crack, circumferential crack region porosity is set to 0.35, and the coal particle of filling in all modules and gangue rock are removed variegated, overall in aterrimus, and whole filled media model laying is highly 350mm, and adopt layering to lay, every layer of laying is highly 50mm.
Above-mentioned mine foam fluent material fire extinguishing characteristic test method, in described step 3, seepage flow Diffusion Law show that method is as follows: assuming that arriving its motion process of unit mass aerated fluid of certain position is with a unit mass motion, and move along a passage crack, use for reference the seepage flow derivation of equation thought of Bingham fluid in pipe, draw aerated fluid seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time in the passage of crack:
In formula, Δ p is that the seepage pressure of crack passage two monitoring point is poor; φ is coal column region or circumferential crack region porosity in model; β is the ratio of aerated fluid viscosity and water viscosity; T is the perfusion aerated fluid time; K is infiltration coefficient; λ is the ratio in 2 times of gel strengths and passage aperture, crack; l
0for grouting port radius; l
1for the flowing distance;
When carrying out seepage tests, the fitting function of aerated fluid viscosity is: u=ae
btin+c formula, a, b, c are fitting constant;
Aerated fluid viscosity u and water viscosity u
wratio beta be:
Formula (2) is substituted in formula (1), show that aerated fluid seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time in the passage of crack are as follows:
Beneficial effect of the present invention is:
1, apparatus of the present invention only need complete a simulated experiment, just can complete the mensuration of aerated fluid fire extinguishing characteristic three indexs simultaneously, comprising percolation law, cooling characteristic and wind leaking stoppage characteristic, greatly reduce the triviality of determination experiment, and be provided with hidden high temp fire source point in device, the cooling-down effect of aerated fluid to concealed fire can be gone out by simulated determination.
2, in apparatus of the present invention, the model district of model test frame is transparent organic glass material, kinetic analyzer can directly from model test frame surface observation to the percolation phenomenon of aerated fluid, the seepage flow situation of aerated fluid in filled media model inside is monitored by being embedded in earth pressure gauge in simulation region, in conjunction with two groups of data analyses, the percolation law of aerated fluid can be reflected really.
Accompanying drawing explanation
Fig. 1 is the structural representation of proving installation of the present invention.
Fig. 2 is the sectional view of filled media model in Fig. 1.
Fig. 3 is that schematic diagram is arranged in monitoring point of the present invention.
Fig. 4 is that proving installation of the present invention measures inorganic solidified aerated fluid viscosity change curve in time.
Fig. 5 is that proving installation of the present invention records bottom high temperature dot, middle, top (T1, T2, T3) temperature changing curve diagram.
Fig. 6 is that proving installation of the present invention records vacuum test cavity internal pressure and varies with temperature curve map.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1 and Figure 2, proving installation of the present invention comprises lift device for casting 1, model test frame 2, filled media model 3 and monitoring device, described lift device for casting 1 has been connected the perfusion of aerated fluid with model test frame 2, described filled media model 3 is placed in model test frame 2, filled media model 3 inner different layers position, different coordinate place bury a hidden high temp fire source point 303 and multiple earth pressure gauge 301, thermopair 302 underground, and described earth pressure gauge 301, thermopair 302 are connected with the detection system outside model test frame 2 by wire.
Described model test frame 2 is divided into the simulation region 201 of the first half and the vacuum test cavity 202 of the latter half, the simulation region 201 of model test frame 2 is transparent organic glass material, moulded dimension: long for 1000mm, wide be 800mm, high be 500mm, filled media model 3 is placed in simulation region 201, the sidewall of simulation region 201 is provided with the perfusing hole 204 for connecting lift device for casting 1, the base plate of simulation region 201 is provided with the intercommunicating pore 203 that two rows are connected with vacuum test cavity 202, often arranges each 5, totally 10; The vacuum test cavity 202 of model test frame 2 is wood quality, is provided with drawer 207 in vacuum test cavity 202, and drawer 207 and vacuum test cavity 202 surrounding glass cement seal.
Described lift device for casting 1 is used for placing aerated fluid, and it comprises a diameter is 800mm, and height is 800mm, and volume is the metal bucket 102 of 400L, described in
Metal bucket 102 hangs on escalator 101, the top bandage of metal bucket 102 is connected with crane, different aerated fluid perfusion pressure heads is realized by escalator 101, the bottom of metal bucket 102 is provided with outlet 103, described outlet 103 is connected with the perfusing hole 204 on model test frame 2 by pipeline, and pipeline is provided with valve 104.Escalator 101 is a ladder vertically placed, metal bucket 102 differing heights is realized by metal bucket 102 being hung over height gears different on escalator 101, just aerated fluid can be flowed out by Action of Gravity Field, just with different pressure heads when outflow after having different height.
Described filled media model 3 is positioned at simulation region 201, as shown in Figure 3, the similar size of coal column module and circumferential crack module is mainly selected according to two aspects, and the first concrete colliery coal column is subject to roof pressure effect and measures the coal pillar width obtained after breaking deformation; It two is be caving according to goaf top plate the circumferential crack scope distribution that "O"-ring theory delimit, and coal particle and the gangue rock of filling in all modules should be removed variegated, overall in aterrimus.According to certain ore deposit on-site actual situations, in this experiment coal column module, crack porosity is set to 0.15; Circumferential crack region porosity is set to 0.35, and the control of porosity adopts volume completion method.It is highly 350mm that whole filled media model 3 is laid, and adopt layering to lay, every layer of laying is highly 50mm.According to Fig. 3 in a model between different layers position, coordinate place bury miniature earth pressure gauge 301, thermopair 302 (the LB-3 upper limit 1300 DEG C, 1600 DEG C in short-term), hidden high temp fire source point 303 underground.
Described monitoring device comprises seepage pressure monitoring system 401, seepage flow diffusion plane image real-time collecting system 404, vacuum chamber negative pressure monitoring system 403 and hidden high temperature dot temperature monitoring system 402, described seepage pressure monitoring system 401 comprises YE2539 statical strain indicator 406 and the first computing machine 405, first computing machine 405 is connected with statical strain indicator 406, statical strain indicator 406 is connected with earth pressure gauge 301, described seepage flow diffusion plane image real-time collecting system 404 comprises kinetic analyzer 408 and second computer 407, second computer 407 is connected with kinetic analyzer 408, kinetic analyzer 408 is just arranged model test frame 2, described vacuum chamber negative pressure monitoring system 403 comprises BD-801KZ pressure vacuum gauge 206 (measurement range :-0.1-0Mpa) and 2XZ-2 unit contraction rotary-vane vacuum pump 205, pressure vacuum gauge 206 is arranged on vacuum test cavity 202 sidewall, vacuum pump 205 is connected with vacuum test cavity 202 by the vacuum orifice on vacuum test cavity 202 sidewall, described hidden high temperature dot temperature monitoring system 402 comprises Digital Measurement of Temperature table 409 (resolving power, 0.1 DEG C/0.1 ℉, accuracy 0.1% ± 0.4 °, maximum display 1999 DEG C), Digital Measurement of Temperature table 409 is connected with thermopair 302.
A kind of mine foam fluent material fire extinguishing characteristic test method, step is as follows:
Step one: filled media model 3 is laid in layering, and in coal column module, crack porosity is set to 0.15; Crack, circumferential crack region porosity is set to 0.35, the coal particle of filling in all modules and gangue rock are removed variegated, overall in aterrimus, it is highly 350mm that whole filled media model 3 is laid, employing layering is laid, every layer of laying is highly 50mm, in filled media model 3, bury earth pressure gauge 301, thermopair 302, hidden high temp fire source point 303 underground, hidden high temp fire source point is the honeycomb briquette lighted.
Step 2: connect monitoring equipment, be connected with statical strain indicator 406 by earth pressure gauge 301 with wire, thermopair 302 is connected with Digital Measurement of Temperature table 409, debugging kinetic analyzer 408, carries out the automatic zero set (AZS) of statical strain indicator 406.
Step 3: carry out seepage flow cooling experiment, the aerated fluid that will test is poured in lift device for casting 1, adjustable height is regulated by escalator 101 by the top hole pressure of designing requirement, open valve 104, carry out perfusion experiment, overall process real-time recording, and recorded monitoring probe data, analyze stress and corresponding diffusion image, in conjunction with foam fluid viscosity parameter, draw seepage flow Diffusion Law;
Because inorganic solidified aerated fluid motion conditions in the passage of crack is complicated, assuming that its motion process of unit mass aerated fluid arriving certain position is with a unit mass motion, and move along a passage crack, use for reference the seepage flow derivation of equation thought of Bingham fluid in pipe, draw aerated fluid seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time in the passage of crack:
In formula, Δ p is that the seepage pressure of crack passage two monitoring point is poor; φ is porosity, and in model, coal column region porosity value is 0.15, and circumferential crack region porosity value is 0.35; β is the ratio of aerated fluid viscosity and water viscosity; T is perfusion aerated fluid time (i.e. diffusion time); K is infiltration coefficient; λ is the ratio in 2 times of gel strengths and passage aperture, crack; l
0for grouting port radius, in pilot system, be of a size of 15mm; l
1for the flowing distance (i.e. diffusion length);
When carrying out seepage tests, obtain viscosity curve map over time, as shown in Figure 4, change in time carry out matching to Fig. 4 medium viscosity, the fitting function obtaining aerated fluid viscosity is: u=ae
bt+ c, in formula, a=0.033, b=0.166, c=4.335;
Aerated fluid viscosity u and water viscosity u
w(test condition is 10 DEG C, and the viscosity number of water is 1.3077 × 10
- 3pas) ratio beta is:
It is as shown in table 1 that aerated fluid flows through the time that the average seepage pressure of 1#-10# monitoring point and seepage flow is diffused into needed for each monitoring point.
Table 1
| Monitoring point | 1# | 2# | 3# | 4# | 5# | 6# | 7# | 8# | 9# | 10# |
| Average seepage pressure ( Kpa) | 16.47 | 13.13 | 14.97 | 14.36 | 10.05 | 11.94 | 10.72 | 5.52 | 7.63 | 5.98 |
| Seepage flow diffusion time (s) | 0 | 160 | 120 | 144 | 382 | 324 | 364 | 734 | 644 | 712 |
| And pressure reduction between 1# point ( kpa) | 0 | 3.24 | 1.5 | 2.01 | 6.32 | 4.53 | 5.65 | 10.85 | 8.74 | 10.39 |
| Aerated fluid viscosity ( pa.s) | 4.360 | 4..370 | 4.360 | 4.365 | 4.451 | 4.448 | 4.454 | 4.557 | 4.523 | 4.548 |
| The flowing distance (mm) | 0 | 255 | 250 | 255 | 510 | 500 | 510 | 776 | 750 | 776 |
| Porosity | 0.35 | 0.15 | 0.35 | 0.35 | 0.15 | 0.35 | 0.35 | 0.15 | 0.35 | 0.35 |
By formula (1) can obtain 3# and 6# monitoring point pressure reduction, time and diffusion length relation as shown in Equation 3:
Corresponding for 3#, 6# monitoring point in table 3 relevant parameters is updated to formula (3) can obtain,
In order to the accuracy of further amendment type (1), the diffusion time of remaining 2#, 4#, 5#, 7#, 8#, 9#, 10# monitoring point and the flowing distance are substituted into formula (1) and calculates predicted value, and then compare with experimental test value, result is as shown in table 2.
Table 2
Can be obtained by table 2, seepage flow pressure reduction formula predictions value is consistent generally with test findings, therefore we draw aerated fluid in the passage of crack seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time such as formula shown in (5).
Check in the drawer 207 of vacuum test cavity 202 whether have discharge opeing water simultaneously, if having, the quality of discharge opeing water is weighed, draw the thermal stability of aerated fluid; Record Digital Measurement of Temperature table 409 records T1, T2, T3 data, draws bottom high temperature dot as shown in Figure 5, middle, top (T1, T2, T3) temperature changing curve diagram.Whole experimental temperature monitoring time is 60min, following temperature also held stationary reduces, and does not occur that temperature rebounds, and illustrates that effectively can isolate oxygen slows down coal spontaneous combustion speed to inorganic solidified aerated fluid in earlier stage, rapid cooling can be covered after contact, analyze the cooling characteristic drawing aerated fluid; Later stage aerated fluid does not ftracture after condensing in the passage of crack, can continue to carry out shutoff data to the passage that leaks out.
Step 4: treat that seepage flow cooling experiment terminates, with 2XZ-2 unit contraction rotary-vane vacuum pump 205 by the negative pressure drop of vacuum test cavity 202 extremely-2000Pa, carry out leak stopping every wind performance test, negative pressure variation is observed by BD-801KZ pressure vacuum gauge 206, in order to better reflect the stability of lost circulation material to crack shutoff, 300min is carried out in whole test, and result as shown in Figure 6, is analyzed and shown that the leak stopping of aerated fluid is every wind performance.
Step 5: cleaning model, and get coal petrography and aerated fluid induration sample, in order to both analyses consolidation face situation.
Claims (10)
1. a mine foam fluent material fire extinguishing characteristic test device, it is characterized in that: comprise lift device for casting, model test frame, filled media model and monitoring device, described lift device for casting has been connected the perfusion of aerated fluid with model test frame, described filled media model is placed in model test frame, bury a hidden high temp fire source point and multiple earth pressure gauge, thermopair in filled media model underground, described earth pressure gauge, thermopair are connected with the detection system outside model test frame by wire.
2. mine foam fluent material fire extinguishing characteristic test device according to claim 1, it is characterized in that: described model test frame is divided into the simulation region of the first half and the vacuum test cavity of the latter half, filled media model is placed in simulation region, the sidewall of simulation region is provided with the perfusing hole for connecting lift device for casting, the base plate of simulation region is provided with the intercommunicating pore be connected with vacuum test cavity, be provided with drawer in vacuum test cavity, drawer and vacuum test cavity surrounding glass cement seal.
3. mine foam fluent material fire extinguishing characteristic test device according to claim 2, is characterized in that: the simulation region of described model test frame is transparent organic glass material, and the vacuum test cavity of model test frame is wood quality.
4. mine foam fluent material fire extinguishing characteristic test device according to claim 2, it is characterized in that: described lift device for casting comprises metal bucket, described metal bucket hangs on escalator, the top bandage of metal bucket is connected with crane, the bottom of metal bucket is provided with outlet, described outlet is connected with the perfusing hole on model test frame by pipeline, and pipeline is provided with valve.
5. mine foam fluent material fire extinguishing characteristic test device according to claim 2, it is characterized in that: described monitoring device comprises seepage pressure monitoring system, seepage flow diffusion plane image real-time collecting system, vacuum chamber negative pressure monitoring system and hidden high temperature dot temperature monitoring system, described seepage pressure monitoring system comprises statical strain indicator and the first computing machine, first computing machine is connected with statical strain indicator, statical strain indicator is connected with earth pressure gauge, described seepage flow diffusion plane image real-time collecting system comprises kinetic analyzer and second computer, second computer is connected with kinetic analyzer, kinetic analyzer is just arranged model test frame, described vacuum chamber negative pressure monitoring system comprises pressure vacuum gauge and vacuum pump, pressure vacuum gauge is arranged on vacuum test cavity wall, vacuum pump is connected with vacuum test cavity by the vacuum orifice on vacuum test cavity wall, described hidden high temperature dot temperature monitoring system comprises Digital Measurement of Temperature table, Digital Measurement of Temperature table is connected with thermopair.
6. mine foam fluent material fire extinguishing characteristic test device according to claim 2, is characterized in that: in described filled media model, stuff are coal particle and gangue rock, and adopt layering to lay.
7. mine foam fluent material fire extinguishing characteristic test device according to claim 1, is characterized in that: described hidden high temp fire source point is the honeycomb briquette lighted.
8. a mine foam fluent material fire extinguishing characteristic test method, step is as follows:
Step one: filled media model is laid in layering, buries earth pressure gauge, thermopair, hidden high temp fire source point in filled media model underground;
Step 2: connect monitoring equipment, with wire, earth pressure gauge is connected with statical strain indicator, thermopair and Digital Measurement of Temperature list catenation, debugging kinetic analyzer, carries out the automatic zero set (AZS) of statical strain indicator;
Step 3: carry out seepage flow cooling experiment, the aerated fluid that will test is poured in lift device for casting, adjustable height is regulated by escalator, open valve, carry out perfusion experiment, overall process real-time recording, and recorded monitoring probe data, analyze stress and corresponding diffusion image, in conjunction with foam fluid viscosity parameter, draw seepage flow Diffusion Law; Check in the drawer of vacuum test cavity whether have discharge opeing water simultaneously, if having, the quality of discharge opeing water is weighed, draw the thermal stability of aerated fluid; Record Digital Measurement of Temperature table data, analyze the cooling characteristic drawing aerated fluid;
Step 4: treat that seepage flow cooling experiment terminates, with vacuum pump by the negative pressure drop of vacuum test cavity extremely-2000Pa, carries out leak stopping every wind performance test, observes negative pressure variation by pressure vacuum gauge, analyze and show that the leak stopping of aerated fluid is every wind performance;
Step 5: cleaning model, and get coal petrography and aerated fluid induration sample, in order to both analyses consolidation face situation.
9. mine foam fluent material fire extinguishing characteristic test method according to claim 8, it is characterized in that: in described step one, in coal column module, crack porosity is set to 0.15; Crack, circumferential crack region porosity is set to 0.35, and the coal particle of filling in all modules and gangue rock are removed variegated, overall in aterrimus, and whole filled media model laying is highly 350mm, and adopt layering to lay, every layer of laying is highly 50mm.
10. mine foam fluent material fire extinguishing characteristic test method according to claim 8, it is characterized in that: in described step 3, seepage flow Diffusion Law show that method is as follows: assuming that arriving its motion process of unit mass aerated fluid of certain position is with a unit mass motion, and move along a passage crack, use for reference the seepage flow derivation of equation thought of Bingham fluid in pipe, draw aerated fluid seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time in the passage of crack:
In formula, Δ p is that the seepage pressure of crack passage two monitoring point is poor; φ is coal column region or circumferential crack region porosity in model; β is the ratio of aerated fluid viscosity and water viscosity; T is the perfusion aerated fluid time; K is infiltration coefficient; λ is the ratio in 2 times of gel strengths and passage aperture, crack; l
0for grouting port radius; l
1for the flowing distance;
When carrying out seepage tests, the fitting function of aerated fluid viscosity is: u=ae
bt+ c, in formula, a, b, c are fitting constant;
Aerated fluid viscosity u and water viscosity u
wratio beta be:
Formula (2) is substituted in formula (1), show that aerated fluid seepage flow diffusion length and seepage flow pressure reduction, relational expression between diffusion time in the passage of crack are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944038.9A CN105388091B (en) | 2015-12-16 | 2015-12-16 | A kind of mine foam fluent material fire extinguishing characteristic test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944038.9A CN105388091B (en) | 2015-12-16 | 2015-12-16 | A kind of mine foam fluent material fire extinguishing characteristic test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105388091A true CN105388091A (en) | 2016-03-09 |
| CN105388091B CN105388091B (en) | 2018-06-22 |
Family
ID=55420632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510944038.9A Active CN105388091B (en) | 2015-12-16 | 2015-12-16 | A kind of mine foam fluent material fire extinguishing characteristic test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105388091B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459049A (en) * | 2018-05-08 | 2018-08-28 | 湖南科技大学 | A kind of mine foam fluent material thermal stability property test device and method |
| CN108572118A (en) * | 2018-05-28 | 2018-09-25 | 中国矿业大学(北京) | A kind of goaf fireproofing extinguishing materials performance measuring and evaluating experiment porch and method |
| CN110455850A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Aerated fluid heat stability testing device and method |
| CN111013055A (en) * | 2019-12-26 | 2020-04-17 | 安徽理工大学 | Mobile gel foam intelligent generation device and use method thereof |
| CN111829913A (en) * | 2020-08-18 | 2020-10-27 | 湖南科技大学 | Device and method for detecting thermal shock resistance of fire-fighting suit in fire scene environment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607437U (en) * | 2009-10-16 | 2010-10-13 | 王刚 | Analog simulation device for spontaneous combustion of float coal of goaf of coal mine |
| CN102445527A (en) * | 2011-09-23 | 2012-05-09 | 太原理工大学 | Testing device for simulating spontaneous combustion and fire extinguishment processes of coal |
| CN203337587U (en) * | 2013-07-29 | 2013-12-11 | 黑龙江科技学院 | Experimental device for testing colloid fire-extinguishing performance |
| CN203858218U (en) * | 2014-05-05 | 2014-10-01 | 西安科技大学 | Coal spontaneous combustion fire prevention and extinguishing hot stick performance testing experimental facility |
| CN104897723A (en) * | 2015-06-19 | 2015-09-09 | 西安科技大学 | Experiment device for spontaneous combustion characteristic test during coal rock creep process |
| CN205209920U (en) * | 2015-12-16 | 2016-05-04 | 湖南科技大学 | Mining foam fluid material characteristic testing arrangement that prevents putting out a fire |
-
2015
- 2015-12-16 CN CN201510944038.9A patent/CN105388091B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607437U (en) * | 2009-10-16 | 2010-10-13 | 王刚 | Analog simulation device for spontaneous combustion of float coal of goaf of coal mine |
| CN102445527A (en) * | 2011-09-23 | 2012-05-09 | 太原理工大学 | Testing device for simulating spontaneous combustion and fire extinguishment processes of coal |
| CN203337587U (en) * | 2013-07-29 | 2013-12-11 | 黑龙江科技学院 | Experimental device for testing colloid fire-extinguishing performance |
| CN203858218U (en) * | 2014-05-05 | 2014-10-01 | 西安科技大学 | Coal spontaneous combustion fire prevention and extinguishing hot stick performance testing experimental facility |
| CN104897723A (en) * | 2015-06-19 | 2015-09-09 | 西安科技大学 | Experiment device for spontaneous combustion characteristic test during coal rock creep process |
| CN205209920U (en) * | 2015-12-16 | 2016-05-04 | 湖南科技大学 | Mining foam fluid material characteristic testing arrangement that prevents putting out a fire |
Non-Patent Citations (2)
| Title |
|---|
| 任万兴等: "泡沫凝胶防治煤炭自燃的特性与机理", 《煤炭学报》 * |
| 秦波涛等: "防灭火三相泡沫流体特性实验研究", 《辽宁工程技术大学学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455850A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Aerated fluid heat stability testing device and method |
| CN110455850B (en) * | 2018-05-07 | 2022-01-04 | 中国石油化工股份有限公司 | Foam fluid thermal stability testing device and method |
| CN108459049A (en) * | 2018-05-08 | 2018-08-28 | 湖南科技大学 | A kind of mine foam fluent material thermal stability property test device and method |
| CN108459049B (en) * | 2018-05-08 | 2020-05-26 | 湖南科技大学 | Device and method for testing thermal stability characteristics of mining foam fluid material |
| CN108572118A (en) * | 2018-05-28 | 2018-09-25 | 中国矿业大学(北京) | A kind of goaf fireproofing extinguishing materials performance measuring and evaluating experiment porch and method |
| CN108572118B (en) * | 2018-05-28 | 2019-07-16 | 中国矿业大学(北京) | A kind of goaf fireproofing extinguishing materials performance measuring and evaluating experiment porch and method |
| CN111013055A (en) * | 2019-12-26 | 2020-04-17 | 安徽理工大学 | Mobile gel foam intelligent generation device and use method thereof |
| CN111829913A (en) * | 2020-08-18 | 2020-10-27 | 湖南科技大学 | Device and method for detecting thermal shock resistance of fire-fighting suit in fire scene environment |
| CN111829913B (en) * | 2020-08-18 | 2024-04-19 | 湖南科技大学 | Detection method for fire-fighting suit thermal shock resistance detection device in fire scene environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105388091B (en) | 2018-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105388091A (en) | Mine foam fluid material fire extinguishing characteristic test device and mine foam fluid material fire extinguishing characteristic test method | |
| Zhang et al. | A method to identify coal spontaneous combustion-prone regions based on goaf flow field under dynamic porosity | |
| WO2021143229A1 (en) | Test system for measuring gas permeation parameters of ultra-low permeability medium in multi-field and multi-phase coupling conditions | |
| Javadi et al. | Critical Reynolds number for nonlinear flow through rough‐walled fractures: The role of shear processes | |
| Yan et al. | Experimental study of methane diffusion in soil for an underground gas pipe leak | |
| CN101476458B (en) | Oil pool development simulation system, oil pool model body and its data processing method | |
| CN201396129Y (en) | Oil deposit steam-injection thermal-recovery multi-way interlock three-dimensional ratio simulation system | |
| Liu et al. | Effect of gas pressure on the sealing efficiency of compacted bentonite–sand plugs | |
| Wang et al. | Numerical study on the diffusion process of pinhole leakage of natural gas from underground pipelines to the soil | |
| CN100594288C (en) | Oil pool development simulation system, upper pressure covering system and data processing method | |
| CN105334142B (en) | A kind of experimental provision formed for simulating shield mud film | |
| CN103163057A (en) | Testing device and measuring and calculating method for gas permeability of compact rock material | |
| CN104568595A (en) | Coal bed mining floor grouting infiltration-reducing simulation testing system | |
| CN110514806B (en) | Similar simulation test device and method | |
| CN105974084A (en) | In-coal-seam gas extraction experiment simulation device | |
| CN106053755A (en) | Coal and gas co-mining three-dimensional physical simulation comprehensive experiment system | |
| CN105301202B (en) | For determining the test system and method for testing of up-protective layer exploitation relief range | |
| Gallage et al. | Response of a plastic pipe buried in expansive clay | |
| Ye et al. | Experimental investigation on gas migration in saturated Shanghai soft clay | |
| Xu et al. | A new approach for determination of gas breakthrough in saturated materials with low permeability | |
| CN205209920U (en) | Mining foam fluid material characteristic testing arrangement that prevents putting out a fire | |
| Luo et al. | Effect of open-framework gravel on suffusion in sandy gravel alluvium | |
| CN104655806B (en) | A kind of nitrogen fracturing coal seam energy variation and permeability method of testing and device | |
| Liu et al. | A new model for coal gas seepage based on fracture-pore fractal structure characteristics | |
| Li et al. | The development of sand erosion induced by shield-tunnel joint leakage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Yi Inventor after: Shi Shiliang Inventor after: Wang Haiqiao Inventor after: Tian Zhaojun Inventor after: Ye Qing Inventor after: Deng Xiangbing Inventor before: Lu Yi Inventor before: Wang Haiqiao Inventor before: Tian Zhaojun Inventor before: Ye Qing Inventor before: Deng Xiangbing |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |