CN112228147B - Rapid and remote fire disaster situation distinguishing method based on trace gas method - Google Patents

Rapid and remote fire disaster situation distinguishing method based on trace gas method Download PDF

Info

Publication number
CN112228147B
CN112228147B CN202011124605.3A CN202011124605A CN112228147B CN 112228147 B CN112228147 B CN 112228147B CN 202011124605 A CN202011124605 A CN 202011124605A CN 112228147 B CN112228147 B CN 112228147B
Authority
CN
China
Prior art keywords
air
damaged
fire
trace gas
air duct
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.)
Active
Application number
CN202011124605.3A
Other languages
Chinese (zh)
Other versions
CN112228147A (en
Inventor
赵晨光
雷柏伟
何斌斌
吴兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology Beijing CUMTB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology Beijing CUMTB
Priority to CN202011124605.3A priority Critical patent/CN112228147B/en
Publication of CN112228147A publication Critical patent/CN112228147A/en
Application granted granted Critical
Publication of CN112228147B publication Critical patent/CN112228147B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/27—Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model

Abstract

The invention discloses a rapid and remote fire disaster situation distinguishing method based on a trace gas method, which comprises the following steps: (a) introducing a trace gas SF6And SF for mine6The continuous monitoring analyzer is conveyed to a disaster tunnel fan; (b) SF for mine6Fixing the continuous monitoring analyzer in the middle of the roadway interface, and opening the mining SF6Continuously monitoring the analyzer, and calibrating and resetting; (c) mixing SF6Filling the balloon, injecting the air into an air suction port of the fan instantly, and recording the injection time; (d) observation of mine SF6Tracer gas SF displayed by continuous monitoring analyzer6Concentration, end of recording time; (e) and obtaining known parameters, and obtaining the damaged position and the damaged state of the catastrophe air cylinder through theoretical calculation and field data comparison analysis. The invention can provide an effective way for judging the fire state, the fire source position and the air leakage quantity of the air duct for mine excavation roadway fire, and can provide important references for fire rescuers to safely judge the fire source condition and quickly make a fire-extinguishing rescue scheme.

Description

Rapid and remote fire disaster situation distinguishing method based on trace gas method
Technical Field
The invention relates to the field of judgment of coal mine fire disaster relief situations, in particular to a method for quickly and remotely judging fire disaster situations based on a gas method.
Background
In recent years, the coal mine safety situation of China is remarkably improved, and the number of coal mine fire accidents is greatly reduced but still happens. Mine fires remain a significant threat to mine safety production and miner life. When a tunnel is excavated, the fire of the tunnel caused by electromechanical sparks, blasting, spontaneous combustion of coal and the like is a complex fire. The fire disaster of the driving tunnel has the advantages that the tunnel is long, the section is small, and the fire source is difficult to find and early warn in time, so the outburst is strong, the interaction of the high-temperature smoke and the ventilation system can cause wind current disorder, the toxic high-temperature smoke is strong, the visibility of the tunnel is extremely low, and the escape and rescue are difficult.
In the roadway excavation fire, the position of a fire source point and the combustion state are difficult to be known, so that an effective fire rescue scheme cannot be implemented, if the coal bed is spontaneous combustion, the water gas explosion can be caused in the fire extinguishing process such as improper water injection, and the roadway burnt by fire can fall down at any time. The contradiction between ventilation and fire extinguishing, the contradiction between water supply and water drainage, the contradiction between water using for fire extinguishing and preventing water gas explosion make the underground rescue difficult unusually rare under a series of unknown conditions.
After the fire disaster occurs in the middle of the excavation roadway, the air duct is easily burnt out, so that the roadway with the fire point easily causes gas accumulation, the living environment of trapped people is deteriorated, meanwhile, the trapped people are difficult to withdraw, a large amount of high-temperature smoke is generated outside the fire point, and along with toxic and harmful gas, rescue team members cannot enter into detailed reconnaissance, and the fire source condition and the gas concentration and the change condition in the roadway with the fire point cannot be accurately known. Trapped people cannot evacuate, so that fire disaster relief measures are greatly limited, and great difficulty is brought to disaster relief work by the characteristics. In the mine fire rescue process, the development trend of the fire cannot be judged, and then effective rescue action countermeasures cannot be made, so that secondary disasters sometimes occur.
Disclosure of Invention
Based on the technical problems, the invention provides a method for quickly and remotely judging the fire disaster situation based on a trace gas method.
The technical solution adopted by the invention is as follows:
a fire disaster situation rapid remote discrimination method based on a trace gas method comprises the following steps:
(a) introducing a trace gas SF6And SF for mine6The continuous monitoring analyzer is conveyed to a disaster tunnel fan;
(b) SF for mine6Fixing the continuous monitoring analyzer in the middle of the roadway interface, and opening the mining SF6Continuously monitoring the analyzer, and calibrating and resetting;
(c) introducing a trace gas SF6Filling the balloon, injecting the air into an air suction port of the fan instantly, and recording the injection time;
(d) observation of mine SF6Tracer gas SF displayed by continuous monitoring analyzer6Recording the end time when the concentration display value is lower than 0.1 ppm;
(e) obtaining known parameters, and obtaining the damaged position and the damaged state of the catastrophe air cylinder through theoretical calculation and field data comparison analysis; specifically, the method comprises the following steps:
(e1) calculating the Trace gas SF by equation (1)6Theoretical total migration time tTheory of things；
Figure GDA0003103873190000021
In formula (1): t is t1、t2Respectively being a trace gas SF6Migration time in wind tube and migration time in tunnel, L is length of tunnel, Q0For supplying air to the fan, S1Is the cross-sectional area of the roadway, S2The sectional area of the air duct;
actual measurement of trace gas SF6From injection into the mine SF6The time used for the continuous monitoring analyzer to monitor is the actual measurement migration time tFruit of Chinese wolfberryWill tFruit of Chinese wolfberryAnd tTheory of thingsCompared with the prior art, if the air ducts are the same, the air ducts are not damaged, the side surfaces reflect that the fire disaster is not serious, and personnel can be arranged to transmit rescue information or adopt a rescue method by using the air ducts;
(e2) if tFruit of Chinese wolfberryAnd tTheory of thingsCompared, different; then according to the mine SF6Continuously monitoring trace gas SF monitored by analyzer6Judging the concentration curve condition, if the concentration curve condition is a double-peak curve, indicating that the air duct is not completely damaged, namely that the air duct has two air outlets and the tracer gas SF6Through the damaged opening of the wind barrel andthe outlet of the air duct diffuses into the tunnel;
(e3) if the trace gas SF6The concentration curve is a unimodal curve, which indicates that the air duct is completely damaged, i.e. cut off at a certain position, i.e. the air duct has an air outlet and the trace gas SF6And diffusing the air flow into the tunnel through the cut-off part of the air duct.
In the step (e2) above: when the air duct is not completely damaged, respectively calculating the damaged position and the air leakage quantity in a reverse mode through a formula (2) and a formula (3);
the damaged position calculation formula is as follows:
Figure GDA0003103873190000022
in the formula (2), X represents the distance between the damaged part of the wind tube and the tunneling head, and t1、t2Median time of stationary phase, Q, of two curves monitored separately for decomposed tracer gas SF61For air leakage at the damaged position, S1Is the sectional area of the roadway;
the air leakage calculation formula is as follows:
Figure GDA0003103873190000023
in the formula (3), CA(t) and CB(t) are respectively the monitoring curves after decomposition, t3、t4、t5、t6Respectively as decomposed trace gas SF6The start-stop time values of the two monitored curves;
the position of a central ignition point of a fire source can be approximately represented by the damaged position, the larger the corresponding air leakage amount is, the higher the severity of the fire disaster is, and the lower the severity is otherwise.
In the step (e3) above: when the air duct is completely damaged, the damaged position is inversely calculated according to the formula (4);
when the wind barrel is completely broken at a certain position, the tracer gas is a single-peak curve with difference in time; according to trace gas SF6Instantaneous release and received SF6Corresponding to peak concentrationTime difference tFruit of Chinese wolfberryThe truncation length can be calculated, and the theoretical calculation formula of the damage position is as follows:
Figure GDA0003103873190000031
in the formula (4), X is the distance between the broken part of the wind tube and the tunneling head, and t isFruit of Chinese wolfberryFor trace gas SF6Instant release and mining SF6Continuous monitoring of SF received by analyzer6Time difference corresponding to peak concentration, L is the length of the driving tunnel, Q0Supplying air quantity to the fan;
at the moment, the fire disaster represents that the fire disaster is serious, and the wind barrel is blown by a fire source; the central ignition point is near the damaged position of the air duct.
In the step (e2), when the air duct is not completely damaged, the mining SF6Continuously monitoring trace gas SF monitored by analyzer6The concentration curve is composed of two trace gas concentration curves, and is decomposed into two single peak value curves by using an EM algorithm;
the specific steps of the EM algorithm are as follows:
1) initializing GMM parameter [ pi ]k,μk,∑k]k＝1～k；
2) E, step E; calculating an expectation of a likelihood function based on the parameters or iteration values of the initial values;
Figure GDA0003103873190000032
in the formula: vnkRepresenting the probability that the concentration value of the nth second belongs to the kth Gaussian distribution;
3) m, step; re-determining corresponding parameters in GMM based on maximum likelihood estimates
Figure GDA0003103873190000033
Figure GDA0003103873190000034
Figure GDA0003103873190000035
Figure GDA0003103873190000036
Figure GDA0003103873190000037
4) Judging whether the interpretation function is converged or not through a preset minimum error; if the convergence is achieved, stopping iteration to obtain a final estimation result; and if not, returning to the step E to perform iterative calculation again until the optimal parameters are output.
The above trace gas SF6And SF for mine6Continuous monitoring analyzers are available directly from the market.
The beneficial technical effects of the invention are as follows:
the invention designs a measuring idea and a measuring method for reversely calculating the damage position and the air leakage quantity of an air duct under the fire disaster condition by using a trace gas method, which are convenient and quick to operate and safe to use; the method can provide an effective way for judging the fire state, the fire source position and the air leakage quantity of the air duct for mine excavation roadway fire, and can provide important references for fire rescuers to judge the fire source condition safely and to rapidly formulate fire-extinguishing rescue schemes.
In addition, the following advantages are provided by analysis:
(1) technical analysis: tracer gas SF used in the invention6SF for mine6Continuous monitoring analyzers and balloons are commercially available and relatively inexpensive.
(2) Time, economic cost saving performance analysis: the method has the advantages of simple and light equipment, very simple operation, remote operation and evaluation and extremely high safety performance.
(3) And (3) recycling: the apparatus used in the invention being other than the tracer gas SF6Can not be recycled, and the rest can be recycled.
Drawings
FIG. 1 is a schematic view of a roadway excavation monitoring system to which the method of the present invention is applied;
FIG. 2 is a flow chart of a method for quickly and remotely judging a fire disaster situation based on a trace gas method according to the present invention;
FIG. 3 shows the trace gas SF when the wind barrel is not damaged and completely cut off6A graph of concentration curves;
FIG. 4 shows the trace gas SF when the wind barrel is not completely damaged6The actual concentration curve and the schematic diagram of the decomposed two curves.
Detailed Description
The method has the following practical difficulties in the fire disaster relief process aiming at the excavation roadway: on the basis of the problems that disaster relief personnel cannot approach a fire source due to high-temperature toxic smoke, the fire development and the integrity of a ventilation system cannot be judged and the like, the problems in multiple aspects of time cost, economic cost, applicability, safety and the like required by remote disaster situation judgment are fully considered, and the method for quickly and remotely judging the fire disaster situation is convenient and quick to operate and safe to use, and the damage position and the air leakage quantity of the air duct under the fire disaster situation are inversely calculated by using a tracer gas method.
As shown in fig. 2, a method for quickly and remotely discriminating a fire disaster situation based on a trace gas method includes the following steps:
(a) introducing a trace gas SF6And SF for mine6And (5) continuously monitoring and analyzing the instrument and conveying the instrument to a disaster roadway fan.
(b) SF for mine6The continuous monitoring analyzer is fixed in the middle of a roadway interface, and is specifically arranged as shown in figure 1, the length L (m) of a tunneling roadway in figure 1, and the air supply quantity of the local ventilator is Q0(m3S) cross-sectional area of the roadway is S1(m2) The cross-sectional area of the wind tube is S2(m2) If the wind barrel is broken at the position (triangle position) X (m) away from the tunneling head, the air leakage rate is Q1(m3S) air intake of the local ventilatorOral immediate release of a volume of SF6An SF is arranged in the center (at the pentagon position) of the exit of the roadway6Continuous monitoring analyzer of SF continuously monitored6Concentration curve CA+B(t) of (d). Wherein the parameter L, Q0、S1、S2Can be measured and obtained on site, and only the damaged position X and the air leakage quantity Q are left1Is an unknown number.
Opening mine SF6And continuously monitoring the analyzer, and calibrating and resetting.
(c) Introducing a trace gas SF6And (5) filling the balloon, injecting the air into an air suction port of the fan instantly, and recording the injection time.
(d) Observation of mine SF6Tracer gas SF displayed by continuous monitoring analyzer6The end time was recorded when the concentration showed a value below 0.1 ppm. At the same time, SF for mining6The continuous monitoring analyzer records the continuously monitored SF6Concentration profile.
(e) According to the obtained known parameters such as the length L of the tunneling roadway, the air supply quantity Q of the ventilator0And comparing and analyzing the data with the field data through theoretical calculation to obtain the damaged position and the damaged state of the catastrophe air cylinder. Specifically, three cases can be classified according to the damage state of the air duct:
(e1) first, the air duct is not damaged (indicating fire but having no effect on the air duct)
When the wind barrel is not damaged, the trace gas SF6A single peak curve with a difference in time should be taken. Tracer gas SF6Total migration time tTheory of thingsThe theoretical calculation formula of (1) is as follows:
Figure GDA0003103873190000051
in the formula t1、t2Respectively being a trace gas SF6Migration time in the wind barrel and migration time in the roadway.
If the obtained trace gas SF is measured6The time from injection to monitoring is the same as or similar to the theoretical value, namely, the air duct does not existThe damage and the side surface also reflect that the fire disaster is not serious, and personnel can be arranged to transmit rescue information by using the air duct or adopt a rescue method.
(e2) Secondly, when the air duct is not completely damaged, the damaged position and the air leakage quantity are inversely calculated.
If tFruit of Chinese wolfberryAnd tTheory of thingsCompared, not identical or similar; then according to the mine SF6Continuously monitoring trace gas SF monitored by analyzer6Judging the condition of the concentration curve, and if the concentration curve is a double-peak curve, indicating that the air duct is not completely damaged; the duct has two gas outlets, and tracer gas diffuses to the tunnel through the damaged mouth of dryer and the duct export, and the tracer gas concentration curve that receives at the tunnel road junction promptly comprises two strands of tracer gas concentration curves, needs further to decompose the superimposed curve this moment, decomposes into two single peak value curves, obtains the monitoring time information of single-stranded tracer gas. The damage position and the air leakage amount are further calculated reversely by the peak time and the like of the two obtained curves.
Figure GDA0003103873190000052
Figure GDA0003103873190000061
Figure GDA0003103873190000062
The theoretical calculation formula of the damaged position is
Figure GDA0003103873190000063
In the above formula t1、t2Respectively as decomposed trace gas SF6The median time to plateau for both curves monitored is shown in fig. 4.
Figure GDA0003103873190000064
Wherein Q is0Total air volume, Q1The air quantity coming out of the air leakage opening, i.e. the air leakage quantity, Q2The air output at the tail end of the air duct is equal to Q in value0-Q1。
The theoretical calculation formula of the air leakage quantity is
Figure GDA0003103873190000065
In the above formula C0(t) is a trace gas SF6Monitoring curve, CA(t) and CB(t) is a concentration monitoring curve after decomposition, t3、t4、t5、t6Respectively as decomposed trace gas SF6The time to end values of the two curves monitored are shown in figure 4.
The position of a central firing point of a fire source can be approximately represented by the damaged position, the larger the corresponding air leakage amount is, the higher the severity of the fire disaster is, and the lower the severity is otherwise.
(e3) Thirdly, when the air duct is completely damaged (cut off), the damaged position is calculated reversely.
If tFruit of Chinese wolfberryAnd tTheory of thingsCompared, not identical or similar, with trace gas SF6The concentration curve is a single-peak curve with difference in time, which indicates that the air duct is completely damaged, i.e. cut off at a certain position, i.e. the air duct has an air outlet and the trace gas SF6And diffusing the air flow into the tunnel through the cut-off part of the air duct.
According to the calculated SF6Instantaneous release and received SF6Time difference t corresponding to peak concentrationFruit of Chinese wolfberryThe truncation length can be calculated, and the theoretical calculation formula of the damage position is as follows:
Figure GDA0003103873190000071
Figure GDA0003103873190000072
at the moment, the fire disaster represents that the fire disaster is serious, and the wind barrel is blown by a fire source. The central ignition point is near the damaged position of the air duct, and corresponding fire extinguishing measures can be formulated by further combining the changes of smoke and temperature.
As a further explanation of the present invention, in the step e2, the trace gas SF is used6The concentration curve is decomposed into two trace gases SF6The concentration profile, i.e. the two single peak profiles, can be obtained by the following steps:
and expressing the distribution of the concentration of the tracer gas by adopting a Gaussian mixture concentration distribution model, and estimating the optimal parameters of the Gaussian mixture model by combining an EM (effective electromagnetic) algorithm.
The Gaussian mixture concentration distribution model is
Figure GDA0003103873190000073
In the formula: pikThe ratio of the kth trace gas to the total trace gas is satisfied
Figure GDA0003103873190000074
C(x|μk,∑k) The concentration distribution model of the kth trace gas satisfies Gaussian distribution, and the specific formula is as follows:
Figure GDA0003103873190000075
in the formula: mu.sk，∑kRespectively, the mean value and the standard deviation of the Gaussian distribution of the concentration of the kth trace gas. Wherein d is 1 and T is transposition.
The EM algorithm takes maximum likelihood estimation as a basic idea and adopts an iterative method to estimate parameters. The specific steps of the EM algorithm are as follows:
1) initializing GMM parameter [ pi ]k,μk,∑k]k＝1～k。
2) And E, step. The expectation of the likelihood function is calculated based on the parameters of the initial values or the previous iteration values.
Figure GDA0003103873190000076
In the formula: vnkIndicating the probability that the concentration value of the nth second belongs to the kth gaussian distribution.
3) And (M). Re-determining corresponding parameters in GMM based on maximum likelihood estimates
Figure GDA0003103873190000081
Figure GDA0003103873190000082
Figure GDA0003103873190000083
Figure GDA0003103873190000084
Figure GDA0003103873190000085
4) And judging whether the interpretation function is converged or not by presetting the minimum error. If the convergence is achieved, stopping iteration to obtain a final estimation result; and if not, returning to the step E to perform iterative calculation again until the optimal parameters are output.
The invention designs a measuring idea and a measuring method for reversely calculating the damage position and the air leakage quantity of an air duct under the fire disaster condition by using a trace gas method, which are convenient and quick to operate and safe to use; the method can provide an effective way for judging the fire state, the fire source position and the air leakage quantity of the air duct for mine excavation roadway fire, and can provide important references for fire rescuers to judge the fire source condition safely and to rapidly formulate fire-extinguishing rescue schemes.
Parts not described in the above embodiments can be realized by taking or referring to the prior art.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above embodiments, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims (3)

1. A fire disaster situation rapid remote discrimination method based on a trace gas method is characterized by comprising the following steps:
(a) introducing a trace gas SF6And SF for mine6The continuous monitoring analyzer is conveyed to a disaster tunnel fan;
(b) SF for mine6Fixing the continuous monitoring analyzer in the middle of the roadway interface, and opening the mining SF6Continuously monitoring the analyzer, and calibrating and resetting;
(c) introducing a trace gas SF6Filling the balloon, injecting the air into an air suction port of the fan instantly, and recording the injection time;
(d) observation of mine SF6Tracer gas SF displayed by continuous monitoring analyzer6Recording the end time when the concentration display value is lower than 0.1 ppm;
(e) obtaining known parameters, and obtaining the damaged position and the damaged state of the catastrophe air cylinder through theoretical calculation and field data comparison analysis; specifically, the method comprises the following steps:
(e1) calculating the Trace gas SF by equation (1)6Theoretical total migration time tTheory of things；
Figure FDA0003103873180000011
In formula (1): t is t1、t2Respectively being a trace gas SF6Migration time in wind tube and migration time in tunnel, L is length of tunnel, Q0For supplying air to the fan, S1Is the cross-sectional area of the roadway, S2The sectional area of the air duct;
actual measurement of trace gas SF6From injection into the mine SF6The time used for the continuous monitoring analyzer to monitor is the actual measurement migration time tFruit of Chinese wolfberryWill tFruit of Chinese wolfberryAnd tTheory of thingsCompared with the prior art, if the air ducts are the same, the air ducts are not damaged, the side surfaces also reflect that the fire disaster is not serious, and personnel are arranged to transmit rescue information or adopt a rescue method by using the air ducts;
(e2) if tFruit of Chinese wolfberryAnd tTheory of thingsCompared, different; then according to the mine SF6Continuously monitoring trace gas SF monitored by analyzer6Judging the concentration curve condition, if the concentration curve condition is a double-peak curve, indicating that the air duct is not completely damaged, namely that the air duct has two air outlets and the tracer gas SF6Diffusing the air flow into the roadway through a damaged air duct opening and an air duct outlet;
(e3) if the trace gas SF6The concentration curve is a unimodal curve, which indicates that the air duct is completely damaged, i.e. cut off at a certain position, i.e. the air duct has an air outlet and the trace gas SF6And diffusing the air flow into the tunnel through the cut-off part of the air duct.
2. The method for rapidly and remotely judging fire disaster situations based on the tracer gas method as claimed in claim 1, wherein in the step (e 2): when the air duct is not completely damaged, respectively calculating the damaged position and the air leakage quantity in a reverse mode through a formula (2) and a formula (3);
the damaged position calculation formula is as follows:
Figure FDA0003103873180000012
in the formula (2), X represents the distance between the damaged part of the wind tube and the tunneling head, and t1、t2Median time of stationary phase, Q, of two curves monitored separately for decomposed tracer gas SF61For air leakage at the damaged position, S1Is the sectional area of the roadway;
the air leakage calculation formula is as follows:
Figure FDA0003103873180000021
in the formula (3), CA(t) and CB(t) are respectively the monitoring curves after decomposition, t3、t4Is CA(t) a start-stop time value, t5、t6Is CB(t) a start-stop time value;
the position of a central ignition point of a fire source can be approximately represented by the damaged position, the larger the corresponding air leakage amount is, the higher the severity of the fire disaster is, and the lower the severity is otherwise.
3. The method for rapidly and remotely judging fire disaster situations based on the tracer gas method as claimed in claim 1, wherein in the step (e 3): when the air duct is completely damaged, the damaged position is inversely calculated according to the formula (4);
when the wind barrel is completely broken at a certain position, the tracer gas is a single-peak curve with difference in time; according to trace gas SF6Instantaneous release and received SF6Time difference t corresponding to peak concentrationFruit of Chinese wolfberryAnd calculating the truncation length, wherein a theoretical calculation formula of the damage position is as follows:
Figure FDA0003103873180000022
in the formula (4), X is the distance between the broken part of the wind tube and the tunneling head, and t isFruit of Chinese wolfberryFor trace gas SF6Instant release and mining SF6Continuous monitoring of SF received by analyzer6Time difference corresponding to peak concentration, L is the length of the driving tunnel, Q0Supplying air quantity to the fan; at the moment, the fire disaster represents that the fire disaster is serious, and the wind barrel is blown by a fire source; the central ignition point is near the damaged position of the air duct.
CN202011124605.3A 2020-10-20 2020-10-20 Rapid and remote fire disaster situation distinguishing method based on trace gas method Active CN112228147B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011124605.3A CN112228147B (en) 2020-10-20 2020-10-20 Rapid and remote fire disaster situation distinguishing method based on trace gas method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011124605.3A CN112228147B (en) 2020-10-20 2020-10-20 Rapid and remote fire disaster situation distinguishing method based on trace gas method

Publications (2)

Publication Number Publication Date
CN112228147A CN112228147A (en) 2021-01-15
CN112228147B true CN112228147B (en) 2021-09-17

Family

ID=74118138

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011124605.3A Active CN112228147B (en) 2020-10-20 2020-10-20 Rapid and remote fire disaster situation distinguishing method based on trace gas method

Country Status (1)

Country Link
CN (1) CN112228147B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113049191B (en) * 2021-03-08 2022-09-09 北京中才华源高新技术有限责任公司 Mining SF6 tracer gas detection system that leaks out

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101183036A (en) * 2007-12-13 2008-05-21 广州市煤气公司 Gas valve online quick-speed leak detection method
CN102620904A (en) * 2012-03-27 2012-08-01 中国矿业大学 Experimental device for flow field display
RU2459959C1 (en) * 2011-03-11 2012-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ) Method for detection of processes of coil spontaneous ignition
CN102733843A (en) * 2011-04-15 2012-10-17 北京联合大学 Method and experiment system for simulating tunneling gas migration rule of coal mine
CN102979579A (en) * 2012-11-30 2013-03-20 天地（常州）自动化股份有限公司 Method for analyzing coal and gas outburst risk in real time
CN103971004A (en) * 2014-05-13 2014-08-06 北京科技大学 Method for computing coalface safety through CO flux in roadway
CN203835458U (en) * 2014-05-12 2014-09-17 象山忠建建筑材料有限公司 Automatic blocking device for mining explosion door
CN106194236A (en) * 2016-09-05 2016-12-07 清华大学 A kind of dead face fire test device and method
CN106285781A (en) * 2016-08-29 2017-01-04 华北科技学院 A kind of method based on search gas quick recognition underground coal mine catastrophe
CN106908217A (en) * 2017-02-24 2017-06-30 山东科技大学 A kind of distinguished and admirable humiture pilot system of dead face based on three-dimensional PIV
CN107620605A (en) * 2017-08-10 2018-01-23 长春黄金研究院 A kind of underground mine goaf large area air-leakage control method
CN109002746A (en) * 2017-06-06 2018-12-14 刘禹岐 3D solid fire identification method and system
CN109657310A (en) * 2018-12-07 2019-04-19 北京理工大学 A kind of real-time dynamic virtual reality emulation mode of gas explosion in underground coal mines
CN110080761A (en) * 2019-03-22 2019-08-02 中国煤炭科工集团太原研究院有限公司 A kind of dust-extraction unit and dust removal method for highwall mining equipment
CN110566276A (en) * 2019-09-05 2019-12-13 西安科技大学 method for distinguishing coal spontaneous combustion dangerous area by utilizing goaf air leakage
CN111261011A (en) * 2020-02-17 2020-06-09 中国矿业大学 Mine fire simulation experiment platform and experiment method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160354625A1 (en) * 2015-06-05 2016-12-08 Air Liquide Large Industries U.S. Lp Gas detection and fire suppression system for hydrogen salt cavern
CN109026154A (en) * 2018-08-10 2018-12-18 淮南矿业(集团)有限责任公司 A kind of determination method and device of wind cave air leak rate of air curtain

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101183036A (en) * 2007-12-13 2008-05-21 广州市煤气公司 Gas valve online quick-speed leak detection method
RU2459959C1 (en) * 2011-03-11 2012-08-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кузбасский государственный технический университет имени Т.Ф. Горбачева" (КузГТУ) Method for detection of processes of coil spontaneous ignition
CN102733843A (en) * 2011-04-15 2012-10-17 北京联合大学 Method and experiment system for simulating tunneling gas migration rule of coal mine
CN102620904A (en) * 2012-03-27 2012-08-01 中国矿业大学 Experimental device for flow field display
CN102979579A (en) * 2012-11-30 2013-03-20 天地（常州）自动化股份有限公司 Method for analyzing coal and gas outburst risk in real time
CN203835458U (en) * 2014-05-12 2014-09-17 象山忠建建筑材料有限公司 Automatic blocking device for mining explosion door
CN103971004A (en) * 2014-05-13 2014-08-06 北京科技大学 Method for computing coalface safety through CO flux in roadway
CN106285781A (en) * 2016-08-29 2017-01-04 华北科技学院 A kind of method based on search gas quick recognition underground coal mine catastrophe
CN106194236A (en) * 2016-09-05 2016-12-07 清华大学 A kind of dead face fire test device and method
CN106908217A (en) * 2017-02-24 2017-06-30 山东科技大学 A kind of distinguished and admirable humiture pilot system of dead face based on three-dimensional PIV
CN109002746A (en) * 2017-06-06 2018-12-14 刘禹岐 3D solid fire identification method and system
CN107620605A (en) * 2017-08-10 2018-01-23 长春黄金研究院 A kind of underground mine goaf large area air-leakage control method
CN109657310A (en) * 2018-12-07 2019-04-19 北京理工大学 A kind of real-time dynamic virtual reality emulation mode of gas explosion in underground coal mines
CN110080761A (en) * 2019-03-22 2019-08-02 中国煤炭科工集团太原研究院有限公司 A kind of dust-extraction unit and dust removal method for highwall mining equipment
CN110566276A (en) * 2019-09-05 2019-12-13 西安科技大学 method for distinguishing coal spontaneous combustion dangerous area by utilizing goaf air leakage
CN111261011A (en) * 2020-02-17 2020-06-09 中国矿业大学 Mine fire simulation experiment platform and experiment method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
示踪气体测量理论及在矿井通风中的应用;王海桥;《工业安全与防尘》;20000210(第02期);第11-13页 *

Also Published As

Publication number Publication date
CN112228147A (en) 2021-01-15

Similar Documents

Publication Publication Date Title
CN108295407B (en) Robot cable pipe gallery on-site fire early warning and fire extinguishing method, device and system
CN108049916B (en) A kind of mine coal spontaneous combustion grading forewarning system and actively it is classified preventing control method
CN112228147B (en) Rapid and remote fire disaster situation distinguishing method based on trace gas method
CN210278031U (en) Intelligent fire extinguishing system for highway tunnel fire
CN109331361B (en) Totally-enclosed separation fire extinguishing method for highway tunnel fire
Brune The methane-air explosion hazard within coal mine gobs
CN112065505B (en) Goaf coal spontaneous combustion wireless ad hoc network monitoring system and danger dynamic identification early warning method
CN109139081B (en) High-gas ultra-long tunnel construction ventilation method
CN109948935B (en) Coal mine risk intelligent analysis system
CN110985094A (en) Comprehensive fire prevention and extinguishing method for goaf
CN206054004U (en) A kind of fire damp safety monitoring system
Baris et al. Atmospheric monitoring systems in underground coal mines revisited: a study on sensor accuracy and location
CN111461456B (en) Method for early warning outburst danger based on gas monitoring data instantaneous change characteristics
CN115832490A (en) Method and system for predicting thermal runaway of battery
CN112943349B (en) Comprehensive management construction method for gas in high-gas tunnel
RU2271450C2 (en) Coal self-ignition detection method
CN110985129B (en) Coal and gas outburst catastrophe identification method for coal mining working face
CN204849844U (en) Gas monitoring valve well lid structure
CN109538278A (en) A kind of open enclosure method of underground coal mine flame range
CN214585390U (en) Gaseous spontaneous combustion of mining collecting space area detects early warning device
CN103334909B (en) Positive pressure bundle gasing pump
CN114087012B (en) Unmanned intelligent ventilation simulation experiment system and method for driving face
McPherson et al. Subsurface fires and explosions
CN204428655U (en) The automatic fire extinguishing system of mine car
CN215949361U (en) Coal mine underground drilling monitoring fire extinguishing device for preventing spontaneous combustion of coal bed

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant