CN111648828A - Intelligent control sulfur iron mine underground working face SO2Method of concentration - Google Patents
Intelligent control sulfur iron mine underground working face SO2Method of concentration Download PDFInfo
- Publication number
- CN111648828A CN111648828A CN202010549698.8A CN202010549698A CN111648828A CN 111648828 A CN111648828 A CN 111648828A CN 202010549698 A CN202010549698 A CN 202010549698A CN 111648828 A CN111648828 A CN 111648828A
- Authority
- CN
- China
- Prior art keywords
- concentration
- working face
- ventilation
- temperature
- intelligent control
- 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
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 45
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 38
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011028 pyrite Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000009423 ventilation Methods 0.000 claims description 48
- 238000005065 mining Methods 0.000 claims description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 44
- 230000002269 spontaneous effect Effects 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004441 surface measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 201000007100 Pharyngitis Diseases 0.000 description 1
- 206010037423 Pulmonary oedema Diseases 0.000 description 1
- 208000010476 Respiratory Paralysis Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 208000005333 pulmonary edema Diseases 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides an intelligent control sulfur iron mine underground working face SO2A method of concentration by establishing a logging station at a downhole working surface; the station comprises a sampling ore pile formed by stacking high-grade pyrite in a working face, a controller and an SO2Concentration sensors, temperature sensors; the controller is controlled by SO2Concentration sensor collects survey station position SO2The invention has the advantages of simplicity, high efficiency, safety, intelligence, reliability, good effect and capability of automatically monitoring SO on the underground working face2Concentration and temperature of, safely to SO2Is controlled.
Description
Technical Field
The invention relates to the technical field of mining industry, in particular to intelligent control of sulfur iron mine underground working surface SO2And (3) concentration method.
Background
PyriteThe main constituent of the ore being FeS2During mining, the contact area of the pyrite on the working face and the air is increased, and oxidation reaction can occur to generate SO2。SO2Is a colorless toxic gas with pungent odor, and the national health standard value of the people's republic of China is specified as follows: when the concentration of the sulfur dioxide gas component in the air is greater than or equal to 2ppm, it poses a hazard to the health of the persons present therein. Moreover, the oxidation reaction of the pyrite is an exothermic reaction, if the released heat cannot be effectively dissipated, the temperature of a stope face or a ore heap can be increased, the reaction can be aggravated due to the increased temperature, and once the temperature is increased to a fire point, the pyrite can be ignited to cause a series of safety and environmental problems. SO of the underground working face of a pyrite mine2Concentration control efforts are increasingly gaining attention.
SO in mine2The control method of (2) is mainly realized by two steps. The first step is SO2The concentration of (3) is monitored. Downhole SO2The concentration monitoring includes automatic monitoring and manual monitoring. The automatic monitoring technology is mainly used for fixed workplaces such as underground ventilation main roadways and the like. Because the underground working face of the pyrite mine is narrow, the change is large and quick, only an artificial interval sampling monitoring analysis method can be adopted, and the artificial monitoring means mainly comprises a detecting tube, an infrared thermometer, a temperature sensor, a portable instrument and the like, but the artificial monitoring method has the advantages of large engineering quantity, low monitoring efficiency, low frequency, one-time monitoring in one week, unsatisfactory prevention and treatment effect and incapability of monitoring the SO of the working face in real time2Concentration, preventing the disease in advance. When SO2When the concentration exceeds a certain limit, the life safety of monitoring personnel can be damaged.
The second step is to take technical measures to reduce SO on the basis of monitoring2Concentration, frequently used downhole to reduce SO2The concentration method has two kinds, one is to utilize a special device capable of recovering sulfur dioxide, the device removes sulfur dioxide by adding chemical agents and the sulfur dioxide to carry out chemical reaction, the underground environment can be improved, but the device is operated on a working face by special personnel and equipment, the treatment process is slow, and the device cannot be suitable for quick tunneling and mining of the working face at allThe requirements of (a). Another common method is enhanced ventilation, which is to control the SO on the working surface2The method is safe, effective and economical in concentration, but when the temperature of the working face is high and is close to the spontaneous combustion point of the pyrite, the oxidation chemical reaction of the pyrite is severe, the ventilation is enhanced, and the oxygen delivery is accelerated, so that the serious disaster accident of the spontaneous combustion of the pyrite is further caused. When the temperature of the working surface is higher, some mines reduce SO by a mode of combining water spray cooling and reinforced ventilation2Concentration, but water and SO2The reaction can generate toxic H2S and other harmful gases have strong irritation and corrosion effects on eyes and respiratory tracts, can cause inflammation of throats and bronchi, and respiratory paralysis, and can cause pulmonary edema in severe cases. Making the working surface environment worse.
In summary, the current working plane controls SO2The concentration method has the following defects: (1) SO (SO)2The monitoring and the regulation of the concentration can not be synchronously carried out in real time; (2) when the exothermic heat of the oxidation reaction of the pyrite on the working surface is possibly converted into spontaneous combustion accidents, the prior art can not successfully warn in real time and can cause the spontaneous combustion accidents.
Disclosure of Invention
The invention provides an intelligent control sulfur iron mine underground working face SO2The concentration method is simple, efficient, safe, intelligent, reliable and good in effect, and can automatically monitor the SO of the underground working face2Concentration and temperature of, safely to SO2Is controlled.
The invention adopts the following technical scheme.
Intelligent control sulfur iron mine underground working face SO2A method of concentration by establishing a logging station at a downhole working surface; the station comprises a sampling ore pile formed by stacking high-grade pyrite in a working face, a controller and an SO2Concentration sensors, temperature sensors; the controller is controlled by SO2Concentration sensor collects survey station position SO2And concentration data, station position temperature data collected by a temperature sensor, and a ventilation local fan and an accident alarm at the working face are controlled according to the monitoring data.
When monitoring SO in data2When the concentration data exceeds the safe concentration threshold and the temperature data is less than the safe temperature threshold, the controller controls the ventilation local fan to start; and when the temperature data in the monitoring data is greater than the safe temperature threshold value, the controller controls the ventilation local fan to stop working and starts the accident alarm to give an alarm.
The sampling ore pile is formed by piling high-grade ore or mineral powder in a working face.
The sampled heap is restacked with freshly mined ore or mineral fines every 5-7 days as the mining face moves.
The set points of the survey station comprise a first survey and a second survey; the first position is the lowest position of the working face stope behind the air inlet shaft, and the second position is the outlet of the return air shaft of the working face stope.
Determinants of the safe concentration threshold and the safe temperature threshold comprise ventilation conditions of the working face and pyrite properties.
The ventilation local fan is a movable ventilation local fan or a fixed ventilation local fan, and the ventilation wind direction is a press-in type or a pull-out type; the ventilation range of the ventilation office fan moves as the work surface advances.
The method also comprises the use of an Ethernet controller and an upper computer, wherein the Ethernet controller and the upper computer are bidirectionally connected with the controller and are used for processing signals transmitted by the controller and driving the fan and the SO through a driving circuit2The concentration alarm and the accident alarm are accurately controlled, SO that the SO of the underground working face is monitored and regulated in real time2The concentration and temperature of (c); the upper computer is arranged in a dispatching monitoring room outside the working face.
The accident alarm comprises a temperature alarm with an LED warning lamp.
The SO2The concentration sensor is an electrochemical sensor; after the ventilation local fan is started, if the SO in the data is monitored2And if the concentration data is lower than the safe concentration threshold value, the controller controls the ventilation local fan to stop working so as to prevent the oxygen concentration of the working surface from increasing.
The invention has the following advantages: the invention can automatically monitor and regulate downhole operation in real timeFlour SO2The concentration of the air is timely started, and the SO of the working surface can be reduced according to the temperature of the working surface2Concentration of (3) preventing working surface SO2Can prevent poisoning accidents and ensure the health of workers. Meanwhile, safety alarm is carried out on pyrite spontaneous combustion accidents, monitoring is accurate, scientific and efficient, the automation degree is high, and SO is solved2The problem of untimely monitoring and control, the problem of unsatisfactory sulfur dioxide spontaneous combustion prevention and control effect and the like.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a schematic control flow diagram of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention;
in the figure: 1-a working surface; 2-a temperature sensor; 3-SO2A concentration sensor; 4-an air inlet well; 5-fresh air flow; 6-dirty air flow; 7-return air shaft; 8-a ventilation local fan; 100-first location; 200-second location.
Detailed Description
As shown in figures 1-3, the intelligent control of the SO on the underground working face of the pyrite mine2Method of concentration by establishing a logging station at the downhole working surface 1; the station comprises a sampling ore pile formed by stacking high-grade pyrite in a working face, a controller and an SO2A concentration sensor 3, a temperature sensor 2; the controller is controlled by SO2Concentration sensor collects survey station position SO2Concentration data, station position temperature data collected by a temperature sensor, and a ventilation fan 8 and an accident alarm at the working face are controlled according to the monitoring data.
When monitoring SO in data2When the concentration data exceeds the safe concentration threshold and the temperature data is less than the safe temperature threshold, the controller controls the ventilation local fan to start; and when the temperature data in the monitoring data is greater than the safe temperature threshold value, the controller controls the ventilation local fan to stop working and starts the accident alarm to give an alarm.
The sampling ore pile is formed by piling high-grade ore or mineral powder in a working face.
The sampled heap is restacked with freshly mined ore or mineral fines every 5-7 days as the mining face moves.
The set points of the stations comprise a first positioning 100 and a second positioning 200; the first position is the lowest position of the working face stope behind the air inlet shaft 4, and the second position is the outlet of the return air shaft 7 of the working face stope.
Determinants of the safe concentration threshold and the safe temperature threshold comprise ventilation conditions of the working face and pyrite properties.
The ventilation local fan is a movable ventilation local fan or a fixed ventilation local fan, and the ventilation wind direction is a press-in type or a pull-out type; the ventilation range of the ventilation office fan moves as the work surface advances.
The method also comprises the use of an Ethernet controller and an upper computer, wherein the Ethernet controller and the upper computer are bidirectionally connected with the controller and are used for processing signals transmitted by the controller and driving the fan and the SO through a driving circuit2The concentration alarm and the accident alarm are accurately controlled, SO that the SO of the underground working face is monitored and regulated in real time2The concentration and temperature of (c); the upper computer is arranged in a dispatching monitoring room outside the working face.
The accident alarm comprises a temperature alarm with an LED warning lamp.
The SO2The concentration sensor is an electrochemical sensor; after the ventilation local fan is started, if the SO in the data is monitored2And if the concentration data is lower than the safe concentration threshold value, the controller controls the ventilation local fan to stop working so as to prevent the oxygen concentration of the working surface from increasing.
Example 1:
the implementation steps of this example are as follows: (1) monitoring and preparing the mining working face; (2) selecting and arranging measuring points on a working surface; (3) determining a safety threshold value; (4) installing monitoring equipment and debugging a monitoring system; (5) implementing real-time control of a working surface; (6) after the working face is mined, monitoring equipment recovery; the 6 steps are specifically operated as follows:
(1) mining face monitoring preparation
The main preparation work includes: the ventilation condition of the working face, the pyrite grade and the spontaneous combustibility condition of the working face and the safety condition of the working face are mastered.
(2) Working surface measurement point selection and arrangement
According to the safety condition of a working surface, the measuring point firstly ensures the construction safety, and two points are generally selected. The first is a point with difficult ventilation in the working face, which is a temporary measuring station formed by stacking high-grade pyrite in the working face, the temporary measuring station is positioned at the lower part of the working face and has poor ventilation, and the measuring station stacks 30 x 30cm of high-grade ores or mineral powder in the working face3The sampling ore heap is piled up again for 5 to 7 days along with the movement of the working surface, and the position of the measuring point correspondingly moves and changes; the second measuring point is fixedly arranged at the air return port of the working surface.
(3) Determination of a safety threshold
Determining two measuring point temperature thresholds and SO according to working face ventilation, pyrite properties, related regulations and research results2A threshold value of concentration.
(4) Monitoring equipment installation and monitoring system debugging
A temperature sensor and SO are arranged 2-5cm on the surface of the measuring station when the measuring station faces2A concentration sensor; a temperature sensor is arranged at the top of the tunnel at the main return air outlet, and SO is arranged at the bottom of the tunnel2A concentration sensor, a controller and an SO are arranged on the working surface2The concentration alarm, the fan and the driving circuit are arranged in a dispatching monitoring room outside the working surface, and an upper computer, a spontaneous combustion accident alarm and a power bus are arranged in the dispatching monitoring room; after the monitoring system is installed, the temperature and SO of the measuring point are measured by a manual intervention method2The concentration is above the threshold to test and debug the entire system.
The debugging system process is as follows: SO (SO)2The concentration sensor and the temperature sensor are arranged on the underground working face when SO2When the concentration exceeds the set safety threshold and the temperature is lower than the set safety threshold, the controller instructs the local fan and the concentration alarm to start, and the local fan starts to work until the SO2The concentration is lower than the set safe threshold value, and the fanThe local fan stops working, and the concentration alarm is closed; when the temperature is higher than the set safety threshold temperature, the controller instructs the local fan to stop working, the dispatching room accident alarm is started to give an alarm, and the dispatching room is researched and adopts a corresponding technology to prevent the occurrence of the working surface pyrite spontaneous combustion disaster.
(5) Implementation of real-time control of a working surface
The control system is manually tested once every 5-7 days in the implementation process of the working face, and if a fault occurs, the control system needs to be maintained in time.
(6) Face mining end, monitoring equipment recovery
And after the mining of the working face is finished, the monitoring equipment needs to be timely recovered. For example, over 8 hours, the recovery equipment must wear a gas mask and make a safe recovery plan for entering the work surface.
In the example, the power bus supplies power for the sensor, the controller and the actuator such as a local fan alarm, the voltage grades of the power bus are respectively 3.3VDC (supplying power for the controller), 24VDC (supplying power for the sensor and the driving relay), 380VAC supplies power for the fan, the direct current bus current is not lower than 10A, 220VAC alternating current is output by a transformer and is supplied to the switching power module to generate 3.3V and 24V direct current.
SO2The sensor adopts an electrochemical sensor, the field power supply adopts 10-30V direct current wide voltage power supply, the range of SO2 which can be sampled is 0-2000ppm optional, the measurement precision is high and can reach within +/-3% FS, and various analog quantity signals are output: and outputting a voltage of 4-20 mA or 0-5V, converting a 4-20 mA current loop signal into a 0-5V analog signal through conversion, and sampling the concentration of SO2 through conversion from an analog quantity to a digital quantity of the controller.
The temperature sensor embedded in the measuring point adopts a contact temperature sensor, and the temperature sensor achieves heat balance through conduction or convection, so that the indicating value of the thermometer can directly indicate the temperature of the measured object. Generally, the measurement precision is higher. The thermometer can also measure the temperature distribution inside the object within a certain temperature measuring range. The system adopts an NTC thermistor as a temperature sensor, the conversion of temperature and voltage is realized by adopting an unbalanced bridge, and an amplifier adopts an LF347 four operational amplifier chip to form a differential amplification circuit so as to convert the output voltage of the bridge into the voltage to ground. Generally, the voltage and the temperature output by the temperature sensor do not show strict linearity, so the temperature sensor is subjected to linear compensation correction by using a software lookup table. And storing the measured data into a controller ROM at intervals of 1 degree in a measuring range, if the temperature is between two voltages, calculating the slopes of the two points by adopting a linear interpolation method, and calculating the temperature value according to a linear equation between the two points.
The a/D conversion in this example is performed using a MAX1241, which is a 12-bit successive approximation type serial output a/D converter. The maximum linear error is less than 1LSB, the conversion time is 9 microseconds, a three-wire through interface is adopted, and a rapid sampling and holding circuit is arranged in the three-wire through interface.
In this example, the system control panel power driving element adopts IRF540, and singlechip IO pin drives IRF540 through photoelectric isolation, controls the switch of 24VDC drive circuit, and when IO mouth control fan opened, IRF540 will switch on the power of electromagnetic relay that changes the way, and 380VAC electric current passes through the power of triangle-shaped connection switch-on fan motor to the drive fan rotates.
Example 2:
underground mining is adopted for certain pyrite, the mining method is an upward horizontal cut-and-fill mining method, and the ore repeatedly generates stope SO2The poisoning accident and the pyrite spontaneous combustion accident cause damage to the mine production, SO the SO on the working surface of the mine is caused2The concentration is intelligently controlled by using the technology. The method comprises the following specific steps:
(1) mining face monitoring preparation
The working face to be detected is a stope of a certain pyrite 2# ore body, an upward horizontal layered filling mining method is adopted, the stope is arranged along the trend of the ore body, the mining layering height is 3-5m, the maximum exposure area of the stope is 1000m2, the ore is high-grade pyrite, the average grade is 30%, and the sulfur grade of individual raw ore is as high as 41%; the stope roof is firm, and the stope return air tunnel is firm, can the safe erection equipment, need not strut. The ore with the sulfur grade over 40 percent is easy to self-ignite, and the ignition temperature is about 42 ℃.
(2) Working surface measurement point selection and arrangement
According to the ventilation system of the stope, the most difficult ventilation position in the stope is the lowest position of the stope, which is far away from the rear part of the air inlet shaft, the point is selected as the first measuring point in the working face, and a measuring station is established, and the measuring station is piled into 30 x 30cm by using the high-grade ore blocks or ore powder (containing 40 percent of sulfur) which are newly recovered by the stope3The sampled heap. With the movement of the mining working face, the sampling ore pile is filled with newly mined ore or ore powder once every 5 to 7 days and is piled up again; the second measuring point is fixedly arranged at the outlet of the return air shaft of the working face stope, and the measuring point is selected as shown in figure 3.
(3) Determination of threshold values
Determining two measuring point temperature thresholds and SO according to working face ventilation, pyrite properties and related procedures and spontaneous combustion research results of the pyrite in the mine2The threshold values for concentration are as follows: measuring point temperature threshold value of 36 ℃, SO2The threshold value of concentration is 0.0010%; temperature threshold of 32 ℃ and SO at measuring point ‚2The threshold concentration was 0.0008%.
The temperature of the ore is 26-28 ℃ under normal conditions, and SO is2The concentration is controlled to be less than 0.0006%. However, because the ore grade of the stope is high and the stope is easy to break, a plurality of high-grade mineral powders are remained in the stope, the mineral powders are easy to oxidize and react, and the stope SO2The concentration and the temperature change greatly, and the scientific threshold value of the monitoring is determined according to the mining requirement.
(4) Monitoring equipment installation and monitoring system debugging
The first measuring point of the working surface is 2-5cm higher than the surface of the sampling ore pile of the measuring station, and the temperature and SO are placed2A concentration sensor; a temperature sensor is fixed at the top of the roadway at the position of a second measuring point, and SO is arranged at the bottom of the roadway2The two sensors are at least 50cm away from the surface of the roadway, and the fan adopts a draw-out type local fan and is arranged in the return air roadway at the outlet of the return air raise; the controller and the SO are installed outside the stope2The concentration alarm, the driving circuit, the upper computer, the spontaneous combustion accident alarm and the power bus are arranged in the dispatching monitoring room outside the working surface.
Claims (10)
1. Intelligent control sulfur iron mine underground working face SO2A method of concentration characterized by: the method comprises establishing a survey station at a downhole work surface; the station comprises a sampling ore pile formed by stacking high-grade pyrite in a working face, a controller and an SO2Concentration sensors, temperature sensors; the controller is controlled by SO2Concentration sensor collects survey station position SO2And concentration data, station position temperature data collected by a temperature sensor, and a ventilation local fan and an accident alarm at the working face are controlled according to the monitoring data.
2. The intelligent control pyrite underground working face SO as claimed in claim 12A method of concentration characterized by: when monitoring SO in data2When the concentration data exceeds the safe concentration threshold and the temperature data is less than the safe temperature threshold, the controller controls the ventilation local fan to start; and when the temperature data in the monitoring data is greater than the safe temperature threshold value, the controller controls the ventilation local fan to stop working and starts the accident alarm to give an alarm.
3. The intelligent control pyrite underground working face SO as claimed in claim 12A method of concentration characterized by: the sampling ore pile is formed by piling high-grade ore or mineral powder in a working face.
4. The intelligent control pyrite underground working face SO as claimed in claim 12A method of concentration characterized by: the sampled heap is restacked with freshly mined ore or mineral fines every 5-7 days as the mining face moves.
5. The intelligent control pyrite underground working face SO as claimed in claim 12A method of concentration characterized by: the set points of the survey station comprise a first survey and a second survey; the first position is the lowest position of the working face stope behind the air inlet shaft, and the second position is the outlet of the return air shaft of the working face stope.
6. The intelligent control pyrite underground working face SO as claimed in claim 22A method of concentration characterized by: determinants of the safe concentration threshold and the safe temperature threshold comprise ventilation conditions of the working face and pyrite properties.
7. The intelligent control pyrite underground working face SO as claimed in claim 12A method of concentration characterized by: the ventilation local fan is a movable ventilation local fan or a fixed ventilation local fan, and the ventilation wind direction is a press-in type or a pull-out type; the ventilation range of the ventilation office fan moves as the work surface advances.
8. The intelligent control pyrite underground working face SO as claimed in claim 22A method of concentration characterized by: the method also comprises the use of an Ethernet controller and an upper computer, wherein the Ethernet controller and the upper computer are bidirectionally connected with the controller and are used for processing signals transmitted by the controller and driving the fan and the SO through a driving circuit2The concentration alarm and the accident alarm are accurately controlled, SO that the SO of the underground working face is monitored and regulated in real time2The concentration and temperature of (c); the upper computer is arranged in a dispatching monitoring room outside the working face.
9. The intelligent control pyrite underground working face SO as claimed in claim 22A method of concentration characterized by: the accident alarm comprises a temperature alarm with an LED warning lamp.
10. The intelligent control pyrite underground working face SO as claimed in claim 22A method of concentration characterized by: the SO2The concentration sensor is an electrochemical sensor; after the ventilation local fan is started, if the SO in the data is monitored2And if the concentration data is lower than the safe concentration threshold value, the controller controls the ventilation local fan to stop working so as to prevent the oxygen concentration of the working surface from increasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010549698.8A CN111648828B (en) | 2020-06-16 | 2020-06-16 | Intelligent control sulfur iron mine underground working face SO2Method of concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010549698.8A CN111648828B (en) | 2020-06-16 | 2020-06-16 | Intelligent control sulfur iron mine underground working face SO2Method of concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111648828A true CN111648828A (en) | 2020-09-11 |
| CN111648828B CN111648828B (en) | 2022-01-18 |
Family
ID=72345438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010549698.8A Active CN111648828B (en) | 2020-06-16 | 2020-06-16 | Intelligent control sulfur iron mine underground working face SO2Method of concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111648828B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253076A (en) * | 2020-11-26 | 2021-01-22 | 福州大学 | Chemical mining method of underground pyrite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500138A (en) * | 2014-10-16 | 2015-04-08 | 中国矿业大学(北京) | Coal and gas outburst warning method of coal mine heading face |
| CN106640198A (en) * | 2016-12-28 | 2017-05-10 | 河南工业和信息化职业学院 | Coal mine underground roadway ventilation alarm device |
| CN108999638A (en) * | 2018-07-27 | 2018-12-14 | 扬中市南方矿用电器有限公司 | A kind of coal mine safety monitoring system |
| CN109162749A (en) * | 2018-10-20 | 2019-01-08 | 山东东山王楼煤矿有限公司 | A kind of mine intelligent ventilating system |
| CN110908344A (en) * | 2019-10-17 | 2020-03-24 | 神华信息技术有限公司 | Monitoring substation, method and system |
-
2020
- 2020-06-16 CN CN202010549698.8A patent/CN111648828B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500138A (en) * | 2014-10-16 | 2015-04-08 | 中国矿业大学(北京) | Coal and gas outburst warning method of coal mine heading face |
| CN106640198A (en) * | 2016-12-28 | 2017-05-10 | 河南工业和信息化职业学院 | Coal mine underground roadway ventilation alarm device |
| CN108999638A (en) * | 2018-07-27 | 2018-12-14 | 扬中市南方矿用电器有限公司 | A kind of coal mine safety monitoring system |
| CN109162749A (en) * | 2018-10-20 | 2019-01-08 | 山东东山王楼煤矿有限公司 | A kind of mine intelligent ventilating system |
| CN110908344A (en) * | 2019-10-17 | 2020-03-24 | 神华信息技术有限公司 | Monitoring substation, method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253076A (en) * | 2020-11-26 | 2021-01-22 | 福州大学 | Chemical mining method of underground pyrite |
| CN112253076B (en) * | 2020-11-26 | 2021-08-31 | 福州大学 | Chemical mining method of underground pyrite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111648828B (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107288677B (en) | A kind of coalmine ventilation parameter intelligentization monitoring regulation device and its control method | |
| CN103434816B (en) | Scraper conveyer chain condition monitoring and protection system | |
| CN110067764B (en) | Remote switching and intelligent regulation and control device for local ventilator of coal mine and control method | |
| CN102444606B (en) | Fan frequency conversion control system and method for air pressure dynamic balance of mine stope | |
| CN111648828B (en) | Intelligent control sulfur iron mine underground working face SO2Method of concentration | |
| CN206789957U (en) | A kind of switch gear room's track machine people's cruising inspection system | |
| CN205532720U (en) | Digital safety control system of blow tunnel construction | |
| CN115788591A (en) | Monitoring and intelligent regulation and control system for dust and harmful gas in deep-buried long tunnel | |
| CN108661717B (en) | Spontaneous combustion early warning system for open-air coal | |
| CN111894885A (en) | Tunnel fan intelligent control system and control method | |
| CN210741469U (en) | Intelligent monitoring system for inclination of tower | |
| CN211012930U (en) | Pole tower inclination monitoring device based on NB-IOT technology | |
| CN104505949A (en) | Mine power network monitoring and guaranteeing system | |
| CN205375128U (en) | Coal mine safety monitoring information system based on PLC control | |
| CN208295559U (en) | A kind of supervisor's steam trap water seal breakdown alarm of blast furnace gas and automatic water-replenishing device | |
| CN205876624U (en) | Wind turbine generator system thunder and lightning alarm device | |
| CN210419132U (en) | Lifting platform dumping mechanism of live-line maintenance robot | |
| CN106081973B (en) | Safety and energy-saving digital watershed measure and control device | |
| CN213902646U (en) | Real-time temperature monitoring device for transformer substation protection room | |
| CN103662720A (en) | Centralized control system for coal mine belt conveyors | |
| CN210321860U (en) | Cableway type ADCP (advanced digital content control protocol) cable way type automatic flow measuring device for vertical line method | |
| CN103558852A (en) | Electronic control system for automatic walking and deviation rectification of hard-rock roadway mining machine | |
| CN109268073B (en) | Mining gas measurement safety monitoring system | |
| CN203180637U (en) | ARM-based underground coal mine power monitoring system | |
| CN203393179U (en) | Automatic lifting control device for converter smelting dry dedusting movable smoke hood |
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 |