CN113107597A - Mine fire transparency monitoring system and method - Google Patents
Mine fire transparency monitoring system and method Download PDFInfo
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- CN113107597A CN113107597A CN202110248389.1A CN202110248389A CN113107597A CN 113107597 A CN113107597 A CN 113107597A CN 202110248389 A CN202110248389 A CN 202110248389A CN 113107597 A CN113107597 A CN 113107597A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
- G01N33/0065—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means using more than one threshold
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Abstract
The invention discloses a mine fire transparency monitoring system and a method, wherein the monitoring system comprises a gas, temperature and potential monitoring sensor module, a multipoint information data processing module, a wired transmission private network, a ground expert monitoring system, a user terminal and the like; the multipoint gas, temperature and potential monitoring modules are communicated with each other to form a monitoring network. The monitoring method adopts the system and comprises the following steps: the monitoring network collects information, the information is transmitted to a multipoint information data processing module through radio signals after being processed in the first step, the information is processed and summarized in the second step to form electric signals, and the electric signals are transmitted to a ground expert monitoring system through a wired transmission private network; the expert monitoring system displays the information state of the goaf in real time according to the gas, temperature and potential multipoint information, displays the danger levels of different areas in real time, and sends out early warnings of different levels according to the danger levels. The invention is reliable, stably provides underground all-dimensional monitoring information during operation, and effectively realizes real-time monitoring of an underground monitoring area.
Description
Technical Field
The invention belongs to the field of mine underground environment monitoring and early warning, and particularly relates to a mine fire transparency monitoring system and a mine fire transparency monitoring method.
Background
Mine fire is one of main disasters of coal mine production in China, and because a coal seam has a fire risk, residual coal in a mined out space is easy to spontaneously combust, and once spontaneously combusted, great threats are brought to mine safety production and miner safety, so that a fire source in the mined out space of the coal mine needs to be quickly and effectively detected.
On the basis of understanding the occurrence mechanism of the thermodynamic disaster, a more effective thermodynamic disaster monitoring method is developed, and the method is a means for effectively reducing the thermodynamic disaster. The method mainly comprises a temperature detection method, an index gas analysis method, a tracer gas method, an odor detection method and the like. The temperature measurement method is the most direct monitoring method for spontaneous combustion of the goaf. The temperature monitoring sensor is generally a thermocouple, a temperature measuring resistor, a semiconductor temperature measuring element, an integrated temperature sensor, a thermosensitive material, an optical fiber, an infrared ray, a laser, a radar wave, or the like. The monitoring of the gas is a method for indirectly predicting and forecasting the evolution process of the spontaneous combustion and the thermodynamic disasters of the coal bed. In addition, the spontaneous combustion temperature rise and combustion of coal can affect the surrounding magnetic field, electric field, optical field and thermophysical field, so that research and practice for detecting thermodynamic disasters are carried out by a physical exploration method, a chemical exploration method and a drilling method, but the detection technologies cannot be widely applied, and the main problems are that the specific changes of the electric field, the magnetic field and the like of the surrounding environment caused by the thermodynamic disasters are very little and the change rules are not enough to be accurately and effectively detected.
The temperature method is widely applied to monitoring spontaneous combustion of coal in the goaf, but the goaf is hidden and influenced by excavation and roof collapse, and the expected effect is basically difficult to achieve by a single wired temperature detection mode. Other non-contact temperature measuring methods can only be applied to the detection of the surface temperature of the roadway coal wall, and have no effect on the hidden area of the deep and far part of the gob. The method for monitoring and early warning the coal bed spontaneous combustion and thermodynamic disaster gas mainly based on the beam pipe system has the problem that the method is difficult to overcome and mainly shows that: (1) the gas being monitored is not in situ and therefore cannot locate the location of the fire and explosion; (2) only qualitative analysis can be carried out on the stage of disaster occurrence; (3) the real-time ratio is poor.
In order to judge the spontaneous combustion dangerous state and the high-temperature development area of the underground goaf and realize the detection and positioning of the spontaneous combustion of coal in the underground goaf, a coal mine goaf fire area detection system and a coal mine goaf fire area detection method need to be further improved.
Disclosure of Invention
The invention provides a mine fire transparency monitoring system and a mine fire transparency monitoring method, which realize real-time monitoring and accurate positioning early warning of spontaneous combustion of coal in an underground monitoring area, so that the transmission of monitoring data is more stable and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mine fire monitoring transparentization monitoring system combines wired and wireless transmission and control, stably monitors the underground environment and provides an information transparentization interface, and comprises a plurality of gas, temperature and potential monitoring modules, at least one multipoint information data processing module, a ground expert monitoring system, a user terminal and a mine monitoring system;
all the gas, temperature and potential monitoring modules are communicated with each other to form a gas, temperature and potential monitoring network; the multipoint information data processing module is wirelessly connected with at least one gas, temperature and potential monitoring module; the multipoint information data processing module is connected with a ground expert monitoring system through a wired transmission private network, and the ground expert monitoring system is connected with a user terminal;
the user terminal is also connected with a mine monitoring system and transmits monitoring information to an upper administrative department.
Preferably, the gas, temperature and potential monitoring module comprises a gas and temperature data acquisition unit, a gas and temperature information transmitting unit, a gas and temperature data transmission relay unit and a power management unit.
Preferably, the gas and temperature data acquisition unit consists of multi-parameter sensors, including a gas analysis sensor, a temperature sensor.
Preferably, the gas analysis sensor comprises a CO sensor, O2Sensor, C2H4Sensor and C2H2A sensor.
Preferably, the wired transmission dedicated network transmits signals by using optical fiber cables and coaxial cables, and the signal transmission modes include optical fiber transmission and cable transmission, the two transmission modes are mutually redundant, the main transmission mode is optical fiber transmission, and the auxiliary transmission mode is cable transmission.
A mine fire monitoring transparentization monitoring method adopts the mine fire transparentization monitoring system, a ground expert monitoring system analyzes and integrates the positions of measuring points, the temperatures of the measuring points, the gas components and the concentrations, the information state of a monitoring area is inverted according to gas, temperature and potential multipoint information, and a transparentization monitoring network is formed based on the geographic information of the monitoring area, and the method specifically comprises the following steps:
step 1: the gas, temperature and potential monitoring module collects various index data in a monitoring area in real time and carries out pretreatment;
step 2: the multipoint information data processing module automatically collects signals sent by the gas, temperature and potential monitoring module, carries out secondary processing and summarization, and forms an electric signal which is transmitted to the ground expert monitoring system in a wired transmission mode through a wired transmission private network;
and step 3: the ground expert monitoring system inverts the information state of the monitoring area according to the multipoint information of gas, temperature and potential, displays the danger levels of different positions in real time based on the geographic information of the monitoring area, and sends out early warnings of different levels according to the danger levels;
and 4, step 4: the user terminal monitors and extracts the information state in the monitoring area, transmits the monitoring information to the upper administrative department through the mine monitoring system according to the current monitoring area state information, or performs start-stop control and state monitoring on the gas, temperature and potential monitoring module through a wired transmission private network and a wireless network.
Preferably, the ground expert monitoring system is internally provided with early warning criteria according to index gas, temperature critical values and dynamic change trends, wherein the early warning criteria are divided into three levels, namely yellow early warning, orange early warning and red early warning.
Preferably, a data intelligent learning algorithm is fused in the ground expert monitoring system, a thermodynamic disaster-causing early warning model is constructed, and the change trend of a monitoring area is analyzed in real time.
The invention has the following beneficial technical effects:
1. the signal transmission mode of the monitoring system is wired and wireless combination, and the defects that the wireless monitoring signal transmission distance is short and the wireless monitoring signal is easily influenced by the external environment and the defects that the traditional wired monitoring detection range is fixed and the wired line is difficult to arrange are overcome; the monitoring system consisting of the gas, temperature and potential monitoring modules can monitor places unsuitable for people to enter, and realize comprehensive monitoring of the goaf;
2. an intelligent early warning software architecture is constructed, a ground expert monitoring system is developed by combining a thermal power disaster early warning model, software and hardware system integration is carried out, received signals are processed and analyzed, signal sources are distinguished, early warning results are more accurate, and underground goaf environment information is transparently displayed; the control of the monitoring software can share a circuit with signal transmission, so that the investment can be effectively reduced;
3. the whole monitoring system has the characteristics of real-time and stable monitoring, accurate early warning positioning and danger level and long transmission distance.
Drawings
FIG. 1 is a block diagram of the mine fire transparency monitoring system of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the mine fire transparentization monitoring system of the invention;
FIG. 3 is a schematic layout of a coal face and a gob of the downhole configuration of FIG. 2;
FIG. 4 is a flow chart of a mine fire transparentization monitoring method of the present invention;
wherein, 1-wired transmission private network; 2-an information data processing module; 3-gas, temperature and potential monitoring module; 4-data transfer and control lines.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a block diagram showing a mine fire transparency monitoring system, which comprises a plurality of gas, temperature and potential monitoring modules and a plurality of multipoint information data processing modules in a goaf; and a ground expert monitoring system, a user terminal, a mine monitoring system and the like are arranged on the ground. The plurality of gas, temperature and potential monitoring modules are communicated with one another to form a goaf gas, temperature and potential monitoring network and are specially protected; the monitoring network transmits and gathers information monitored by a plurality of monitoring modules in real time to a multipoint information data processing module through wireless signals, and the multipoint information data processing module is responsible for transmission, numbering, emission and the like of multipoint wireless information; the multipoint information data processing module is used for carrying out secondary processing and gathering on multipoint information collected and preprocessed by a monitoring network in the goaf to form an electric signal, the electric signal is transmitted to a ground expert monitoring system in a wired transmission mode through a wired transmission private network, the expert monitoring system displays the information state of the goaf according to the multipoint information of gas, temperature and potential, the danger levels of different regions are displayed in real time, and early warnings of different levels are sent out according to the danger levels. The user terminal can also be connected with a mine monitoring system to transmit monitoring information to an upper administrative department, and meanwhile, the user terminal can control the start and stop of the gas, temperature and potential monitoring module and monitor the state of the gas, temperature and potential monitoring module through a wired transmission private network and a wireless network.
The ground expert monitoring system adopts a data intelligent learning algorithm and analyzes the change trend of the temperature in real time. The early warning criterion of the temperature and the gas is built in the system, and when the temperature and the gas exceed a critical value or increase the trend and change rapidly, the early warning is sent step by step.
Fig. 2 shows an overall structure schematic diagram of a mine fire transparency monitoring system, which is composed of three major parts, namely a goaf information monitoring system, a transmission network system and a ground monitoring and early warning system. The goaf information monitoring system comprises a plurality of coal working faces and goafs, and each coal working face and each goaf are connected to a respective working face substation display control system through data transmission and control lines; each work surface substation display control system is connected to the ground monitoring and early warning system through a transmission network system; the ground monitoring and early warning system comprises a ground expert monitoring system, a user terminal and the like.
The ground expert monitoring system is responsible for receiving signals transmitted by a wired transmission private network and providing necessary hardware and platforms for the operation of the user terminal. The user terminal is responsible for processing signals transmitted from the underground goaf, analyzing and monitoring the signals, displaying an underground environment transparentization interface according to the underground geographic information database, providing an acousto-optic alarm and a mobile terminal alarm when the underground environment is abnormal, displaying the abnormal place on the underground environment transparentization interface in real time, and also being connected with a mine monitoring system to transmit monitoring information to an upper-level administrative department.
In addition, the user terminal can send instruction signals to the ground expert monitoring system, the ground expert monitoring system carries out signal transmission through a wired transmission private network and the multipoint information data processing module, and starting and stopping control and signal transmitting and receiving control of the multipoint information data processing module in the goaf are achieved.
Fig. 3 shows a specific layout of the coal face and the goaf in fig. 2, wherein a gas, temperature and potential monitoring module and a multipoint information data processing module are laid in the underground goaf, the gas, temperature and potential monitoring module is powered by a high-energy battery, and the multipoint information data processing module is directly powered by wired direct current due to the fact that the multipoint information data processing module is close to a wired line. The method comprises the steps that gas, temperature and potential monitoring modules are placed at the rear part of a coal mining support in the working face advancing process and are arranged at intervals in rows, 3-5 monitoring modules are arranged in each row, the distance between every two monitoring modules is about 30 meters, 3-5 rows are arranged in a goaf, the distance between every two rows is 20-50 meters, a network arrangement mode is formed, the gas, temperature and potential monitoring modules are gradually placed at the deep and far part of the goaf along with the advancing of the working face, and thermal power disasters of the goaf are monitored. The multipoint information data processing module is mainly used for receiving signals sent by the gas, temperature and potential monitoring module, the number of the multipoint information data processing module is small, the multipoint information data processing module can be arranged near two positions where the data transmission and control lines are located, and the spacing distance can be set to be 50-80 meters according to the field condition. The gas, temperature and potential monitoring module mainly has the functions of acquiring temperature, gas component and content information of the underground goaf by using the multi-parameter sensor, transmitting the information to next-hop equipment through the wireless transmitting module and finally summarizing the information to the multipoint information data processing module, and specifically comprises a gas and temperature data acquiring unit, a gas and temperature information transmitting unit, a gas and temperature data transmission relay unit and a power supply management unit.
The special wired transmission network is arranged on two lanes of a working face and is an optical fiber cable coaxial cable, the structure of the special wired transmission network is that an optical fiber is arranged in the middle, an optical fiber conducting insulating layer wraps the optical fiber, optical signals can be transmitted in the optical fiber conducting insulating layer, a cable wire wraps the insulating layer, electric signals can be transmitted in the insulating layer, and the outermost layer of the cable is a sheath for protecting the cable. The signal transmission mode optical fiber and the cable are mutually redundant, the optical fiber transmission is a main transmission mode, and the cable transmission is a standby transmission scheme. The core functions of the special wired transmission network are as follows: (1) transmitting the data collected by the multipoint information data processing module to the work surface substation; (2) sending an instruction to control the working state of the goaf wireless monitoring system through the working face substation and the ground control system; (3) can supply low-voltage safety power supply for the multipoint information data processing modules in the two channels.
In addition, the gas, temperature and potential monitoring module divides priority according to the distance from the multipoint information data processing module, the closer the multipoint information data processing module, the higher the priority, the farther the multipoint information data processing module, the lower the priority, the signal is transmitted to the nearest high priority module in the periphery by the low priority module in the transmission process, and finally all data are gathered to the multipoint information data processing module.
The establishment of the new network is performed by the multipoint information data processing module, and the multipoint information data processing module firstly performs channel scanning and energy detection to establish the network and serves as a father node to receive network access requests of other nodes. After receiving the network access request, the father node firstly judges whether the node is allowed to join the network, if the node is allowed to join the network, the father node sends a request response to inform the child node, and allocates a network address to the child node as a unique identity in the network. So far the node successfully joins the network. Therefore, the network address distribution of the first level enables all nodes in the monitoring area to be added into the network. In the process of joining the network by the nodes, a pair of nodes which are communicated with each other form a parent-child relationship, the node which has joined the network is called a parent node, and the other node is a child node.
Fig. 4 is a partial flow chart of a monitoring method using the mine fire transparentization monitoring system, which specifically comprises the following steps:
the method comprises the following steps: and determining the geographic information of the underground goaf, and recording the geographic information into a database for a transparent interface of monitoring software. According to the mine fire transparent monitoring system arranged as shown in fig. 2, gas, temperature and potential monitoring modules are placed at the rear part of a coal mining support in the working face advancing process and are arranged in rows at intervals, the distance between every two monitoring modules is about 30 meters, 3-5 rows are arranged in a goaf, the distance between every two monitoring modules is 20-50 meters, a network arrangement mode is formed, and along with the advancing of the working face, the gas, temperature and potential monitoring modules are gradually placed at the deep and far part of the goaf to monitor the thermodynamic disasters of the goaf. The multipoint information data processing modules are less in number, can be arranged near two positions where transmission and control lines are located, and the spacing distance can be set to be 50-80 meters according to the field condition. And laying down the coaxial cable of the optical fiber cable from the underground to the aboveground on two roadways of a working face, arranging a ground expert monitoring system on the ground, and installing operation monitoring software and a user terminal.
Step two: and for the multipoint information data processing module, short time intervals are adopted for transmitting data, the transmission time intervals can be set, and the multipoint information data processing module can be dynamically adjusted according to the disaster change condition of the goaf, so that the purpose of saving a power supply is achieved. The multipoint information data processing module is arranged in the two goafs and can meet the power supply requirement in a transmission and control line power supply mode. After the gas, temperature and potential monitoring modules and the multipoint information data processing modules are arranged, the multipoint information data processing modules send starting instructions to start all the gas, temperature and potential monitoring modules through a gas and temperature wireless monitoring network, the basic functions of the multipoint information data processing modules are tested, the functions and connection conditions of all the parts are checked, and after all the parts are normal, all the equipment is started.
Step three: the underground gas, temperature and potential monitoring module starts to work by sending a starting instruction through the user terminal, the gas, temperature and potential monitoring module is in a low-power working state and can continuously and roughly monitor the environment, when the environment temperature or gas index is detected to exceed a built-in threshold value or the monitoring instruction of the user terminal is received or an internal timer reaches a monitoring time period, the gas, temperature and potential monitoring module is awakened to be in a normal working mode from the low-power mode, and starts to monitor the temperature and index gas and send monitoring information in real time.
Step four: because the multipoint information data processing module is connected with the wired transmission private network in a wired mode, the power supply mode of the multipoint information data processing module is cable power supply, and the power supply of the multipoint information data processing module is sufficient, the multipoint information data processing module is always in a working standby state and can automatically collect signals sent by the underground gas, temperature and potential monitoring module. After the multipoint information data processing module receives the signals, the signals are gathered, the wireless signals are decoded into electric signals suitable for wired transmission, and the signals are transmitted to a wired transmission private network.
Step five: the wired transmission private network is responsible for transmitting signals in the well to the well in a wired mode. The transmission medium of the wired transmission special network is an optical fiber cable coaxial cable, the signal transmission mode optical fiber transmission and the cable transmission are mutually redundant, the optical fiber transmission is a main transmission mode, and the cable transmission is a standby transmission scheme.
Step six: an intelligent early warning software architecture is constructed by researching a thermal power disaster evolution process, an expert system of coal spontaneous combustion and gas thermal power multi-element multi-field coupling disaster evolution process on-line monitoring and early warning software, namely a ground expert monitoring system, oriented to a transparent goaf is developed by combining a thermal power disaster early warning model, software and hardware system integration is carried out, the goaf early warning monitoring system can be regulated and controlled, prediction and disaster management of the goaf thermal power disaster are guided, and transparency of mine goaf disaster information is realized.
Step seven: signals transmitted by the wired transmission private network are processed and analyzed by a ground expert monitoring system, a visual interface is output based on an underground information database, the environmental information of each underground spatial position is monitored in real time, and a user terminal can master detailed information under a mine in real time. When data monitored by the underground environment exceeds a preset threshold value, the ground terminal can judge a dangerous state, when the current underground environment is judged to be a dangerous state, the user terminal sends out audible and visual alarm and displays the early warning level of the underground environment, and sends an instruction to realize continuous monitoring of the gas, temperature and potential monitoring module until the temperature and index gas are recovered to be normal, the alarm is relieved, the gas, temperature and potential monitoring module recovers to be in a low power consumption state, and the ground expert monitoring system can also be connected with a mine monitoring system to transmit monitoring information to an upper administrative department. The ground expert monitoring system determines early warning criteria according to index gas, temperature critical values and change dynamic trends, wherein the early warning criteria are divided into three levels, namely yellow early warning, orange early warning and red early warning:
yellow early warning: carbon monoxide is used as a main index, the critical value of the temperature is 70-80 ℃, and the precipitation rate of CO gas and the coal temperature are in direct proportion at the moment. If the presence of CO gas is detected in the upper corner, behind the bracket and in the return air flow and the content thereof is kept steadily increasing, the coal temperature is expected to reach 45 ℃, and when the coal temperature exceeds 75 ℃, the separation rate of the CO gas is in direct proportion to the coal temperature, namely the CO gas obviously increases along with the increase of the coal temperature. The CO concentration at the highest monitoring point of the CO gas concentration is compared with 400ppm, so that the latent period of spontaneous combustion of the nearby coal bed is presumed to be almost finished, and the coal bed starts to enter the second stage of spontaneous combustion of the coal, namely the self-heating period. At this time, a fire area observation point is established in the suspicious area, and the gas components and the air temperature are comprehensively observed. When the carbon monoxide concentration rises rapidly, preventive measures must be taken.
Orange early warning: ethylene is used as a main index, and the critical temperature value is 110-380 ℃. C2H4Gas appearance indicates coal entering the accelerated oxidation stage, so C2H4The gas can be used as an index gas for predicting and forecasting the spontaneous combustion ignition of the coal to enter an acceleration stage and a severe oxidation stage. In the presence of CO gas, once C appears2H4Gas, which indicates that a certain area in the well is in the middle of self-heating, must be taken immediately to prevent fire.
Red early warning: acetylene is used as a main index, and the critical temperature value is 380 ℃. When acetylene appears in the wind flow, the coal is self-ignited, and a fire alarm should be given out in time. And formulating comprehensive fire prevention and extinguishing measures for treatment.
Step eight: under the conditions that the temperature and index gas parameters of the underground goaf are normal and no intervention of external personnel exists, the gas, temperature and potential monitoring module awakens the normal working state every 10 minutes under the plan of the timer, monitors and transmits environment monitoring information.
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 examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A mine fire monitoring transparentization monitoring system is characterized in that wired and wireless transmission and control are combined, underground environment is stably monitored, an information transparentization interface is provided, and the system comprises a plurality of gas, temperature and potential monitoring modules, at least one multipoint information data processing module, a ground expert monitoring system, a user terminal and a mine monitoring system;
all the gas, temperature and potential monitoring modules are communicated with each other to form a gas, temperature and potential monitoring network; the multipoint information data processing module is wirelessly connected with at least one gas, temperature and potential monitoring module; the multipoint information data processing module is connected with a ground expert monitoring system through a wired transmission private network, and the ground expert monitoring system is connected with a user terminal;
the user terminal is also connected with a mine monitoring system and transmits monitoring information to an upper administrative department.
2. The mine fire transparency monitoring system as claimed in claim 1, wherein the gas, temperature and potential monitoring module comprises a gas and temperature data acquisition unit, a gas and temperature information transmitting unit, a gas and temperature data transmission relay unit and a power management unit.
3. The mine fire transparency monitoring system as claimed in claim 2, wherein the gas and temperature data acquisition unit is composed of multi-parameter sensors, and the multi-parameter sensors comprise a gas analysis sensor and a temperature sensor.
4. The mine fire transparency monitoring system as claimed in claim 3, wherein the gas analysis sensor comprises a CO sensor, O sensor2Sensor, C2H4Sensor and C2H2A sensor.
5. The mine fire transparency monitoring system according to claim 1, wherein the wired transmission dedicated network transmits signals by using a fiber-optic cable coaxial cable, and the signal transmission modes comprise a fiber-optic transmission mode and a cable transmission mode, wherein the two transmission modes are mutually redundant, the main transmission mode is a fiber-optic transmission mode, and the auxiliary transmission mode is a cable transmission mode.
6. A mine fire monitoring transparentization monitoring method is characterized in that a mine fire transparentization monitoring system according to any one of claims 1 to 5 is adopted, a ground expert monitoring system analyzes and integrates the positions of measuring points, the temperature of the measuring points, the gas components and the concentration, the information state of a monitoring area is inverted according to gas, temperature and potential multipoint information, and a transparentization monitoring network is formed based on the geographic information of the monitoring area, and the method comprises the following specific steps:
step 1: the gas, temperature and potential monitoring module collects various index data in a monitoring area in real time and carries out pretreatment;
step 2: the multipoint information data processing module automatically collects signals sent by the gas, temperature and potential monitoring module, carries out secondary processing and summarization, and forms an electric signal which is transmitted to the ground expert monitoring system in a wired transmission mode through a wired transmission private network;
and step 3: the ground expert monitoring system inverts the information state of the monitoring area according to the multipoint information of gas, temperature and potential, displays the danger levels of different positions in real time based on the geographic information of the monitoring area, and sends out early warnings of different levels according to the danger levels;
and 4, step 4: the user terminal monitors and extracts the information state in the monitoring area, transmits the monitoring information to the upper administrative department through the mine monitoring system according to the current monitoring area state information, or performs start-stop control and state monitoring on the gas, temperature and potential monitoring module through a wired transmission private network and a wireless network.
7. The mine fire transparency monitoring method as claimed in claim 6, wherein the ground expert monitoring system is provided with pre-warning criteria according to index gas, temperature critical value and dynamic change trend, and the pre-warning criteria are divided into three levels, namely yellow pre-warning, orange pre-warning and red pre-warning.
8. The mine fire transparency monitoring method according to claim 6, wherein a thermodynamic disaster early warning model is constructed by fusing a data intelligent learning algorithm in the ground expert monitoring system, and the change trend of a monitoring area is analyzed in real time.
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