CN113805248A - Comprehensive detection method for spontaneous combustion area of coal mine - Google Patents
Comprehensive detection method for spontaneous combustion area of coal mine Download PDFInfo
- Publication number
- CN113805248A CN113805248A CN202110903751.4A CN202110903751A CN113805248A CN 113805248 A CN113805248 A CN 113805248A CN 202110903751 A CN202110903751 A CN 202110903751A CN 113805248 A CN113805248 A CN 113805248A
- Authority
- CN
- China
- Prior art keywords
- spontaneous combustion
- area
- target area
- detecting
- combustion target
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 124
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 124
- 238000001514 detection method Methods 0.000 title claims abstract description 67
- 239000003245 coal Substances 0.000 title claims abstract description 37
- 238000005457 optimization Methods 0.000 claims abstract description 8
- 229910052704 radon Inorganic materials 0.000 claims description 24
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 238000009529 body temperature measurement Methods 0.000 claims description 14
- 230000001052 transient effect Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 10
- 238000003892 spreading Methods 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005358 geomagnetic field Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/26—Passive interrogation, i.e. by measuring radiation emitted by objects or goods
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- High Energy & Nuclear Physics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a comprehensive detection method for a spontaneous combustion area of a coal mine, which comprises the following steps: detecting the earth surface of the area to be detected based on different types of full-area spontaneous combustion area detection devices respectively to obtain a plurality of corresponding primary spontaneous combustion target areas; and comprehensively optimizing the plurality of primary spontaneous combustion target areas based on a preset comprehensive optimization rule to obtain a secondary spontaneous combustion target area. Wherein the secondary auto-ignition target area does not exceed the range of any primary auto-ignition target area; the detection device for the spontaneous combustion areas based on different types of local areas sequentially detects the areas to be detected according to the sequence of the sizes of the correspondingly arranged measuring nets from large to small, and finally obtains a final spontaneous combustion target area. The local area spontaneous combustion area detection device which is firstly detected is used for detecting the second-stage spontaneous combustion target area, and the rest of the local area spontaneous combustion area detection devices are used for detecting the spontaneous combustion target area obtained by the detection of the first local area spontaneous combustion area detection device. The invention adopts a multi-stage detection mode to gradually reduce the fire area range, thereby not only reducing the operation implementation cost, but also greatly improving the detection accuracy and reliability.
Description
Technical Field
The invention relates to the field of coal mine fire prevention, in particular to a comprehensive detection method for a coal mine spontaneous combustion area.
Background
The coal field fire refers to a coal spontaneous combustion phenomenon that after spontaneous combustion occurs to underground coal, the coal gradually develops and forms a certain scale along a coal bed and harms coal resources, mine production and ecological environment, and is also called underground coal fire or coal fire.
The current common coal fire detection technology has the problems of overlarge consumption of manpower and material resources, low detection resolution, detection limitation to objective conditions and the like. Therefore, the current coal fire detection technology cannot realize accurate and efficient detection of the coal field fire area.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a comprehensive detection method for a spontaneous combustion fire zone of a coal mine, which adopts a multi-stage detection mode to gradually reduce the range of the fire zone, and has the advantages of low cost, high detection accuracy and wide practicability.
The invention discloses a comprehensive detection method for a spontaneous combustion area of a coal mine, which comprises the following steps:
s1: the earth surface of the area to be detected is detected based on different types of full-area spontaneous combustion area detection devices respectively to obtain a plurality of corresponding primary spontaneous combustion target areas.
S2: based on a preset comprehensive optimization rule, comprehensively optimizing the primary spontaneous combustion target areas to obtain secondary spontaneous combustion target areas; wherein the secondary auto-ignition target area does not exceed the range of any of the primary auto-ignition target areas.
S3: sequentially detecting the areas to be detected according to the size of the correspondingly arranged measuring net from large to small based on different types of local area spontaneous combustion area detection devices, and finally obtaining a final stage spontaneous combustion target area; the local area spontaneous combustion area detection device which is firstly used for detection is used for detecting the second-stage spontaneous combustion target area, and the rest local area spontaneous combustion area detection devices are used for detecting the spontaneous combustion target area which is obtained by detection of the local area spontaneous combustion area detection device.
Further, the step S1 includes:
detecting the ground surface of the area to be detected by adopting an unmanned aerial vehicle infrared temperature measuring device to determine an infrared temperature measuring spontaneous combustion target area;
and (3) performing magnetic prospecting on the ground of the region to be detected by adopting a magnetic prospecting device to determine the magnetic prospecting spontaneous combustion target region.
Further, adopt the infrared temperature measuring device of unmanned aerial vehicle to treat the district's earth's surface of surveying and confirm infrared temperature measurement spontaneous combustion target area, include:
and setting measuring points in the area to be measured, setting an automatic flight route based on the measuring points, controlling the unmanned aerial vehicle with the infrared sensor to fly according to the automatic flight route, and processing and analyzing the collected temperature measurement data to obtain the infrared temperature measurement spontaneous combustion target area.
Further, adopt the infrared temperature measuring device of unmanned aerial vehicle to treat the district's earth's surface of surveying and confirm infrared temperature measurement spontaneous combustion target area, include: the unmanned aerial vehicle infrared temperature measuring device detects the ground surface of the region to be measured according to a 2 m-2 m measuring network to determine an infrared temperature measuring spontaneous combustion target region.
The method for determining the spontaneous combustion target area of magnetic prospecting by adopting the magnetic prospecting device to perform magnetic prospecting on the ground of the area to be detected comprises the following steps: and the magnetic exploration device performs magnetic exploration on the ground of the area to be detected according to the measuring network of 20m by 20m to determine the magnetic exploration spontaneous combustion target area.
Further, the step S2 includes:
and selecting the intersection part of the infrared temperature measurement spontaneous combustion target area and the magnetic exploration spontaneous combustion target area as a second-stage spontaneous combustion target area.
Furthermore, an isotope radon measuring device, a high-density electric device and a transient electromagnetic exploration device are adopted to detect the region to be detected according to the sequence of the sizes of the measuring nets respectively corresponding to the isotope radon measuring device, the high-density electric device and the transient electromagnetic exploration device from large to small, and finally the final-stage spontaneous combustion target region is obtained.
Further, detecting the second-level spontaneous combustion target area by adopting the isotope radon measuring device according to a measuring net of 20m by 10m to obtain a third-level spontaneous combustion target area;
detecting the three-level spontaneous combustion target area by adopting the high-density electric device according to a measuring network of 10m by 10m to obtain a four-level spontaneous combustion target area;
and detecting the four-stage spontaneous combustion target area by adopting the transient electromagnetic exploration device according to a measuring network of 10m by 5m to obtain a final-stage spontaneous combustion target area.
Further, the method further comprises:
and optimizing the final spontaneous combustion target area again based on the stratum information of the coal field region of the region to be detected, the fracture structure spreading characteristic information, the mining information of the mine goaf, the basic parameter characteristic data of the high-temperature coal-rock mass and the ignition and spread characteristic information of the regional coal field fire region.
The invention has at least the following beneficial effects:
the invention adopts a multistage detection mode to gradually reduce the fire area range, firstly adopts a whole-area spontaneous combustion area detection device with larger coverage, high efficiency and low cost to detect and optimize to obtain a second-stage spontaneous combustion target area, and further adopts a local-area spontaneous combustion area detection device to carry out multistage progressive detection on the basis of the range.
Other advantageous effects of the present invention will be described in detail in the detailed description section.
Drawings
Fig. 1 is a flow chart of a method for comprehensively detecting a fire zone in a coal mine according to a preferred embodiment of the invention.
Fig. 2 is a work area actually measured Δ T magnetic anomaly contour map and point location information disclosed in the preferred embodiment of the present invention.
FIG. 3 is a contour plot of magnetic anomaly Δ T after poling and point location information as disclosed in a preferred embodiment of the present invention.
FIG. 4 is a flat distribution diagram of a radon concentration contour as disclosed in a preferred embodiment of the present invention.
FIG. 5 is a schematic illustration of a radon outlier histogram as disclosed in a preferred embodiment of the present invention.
Fig. 6 is an apparent resistivity horizontal sectional view as disclosed in a preferred embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in FIG. 1, the invention discloses a comprehensive detection method for a spontaneous combustion area of a coal mine, which comprises the following steps:
s1: the earth surface of the area to be detected is detected based on different types of full-area spontaneous combustion area detection devices respectively to obtain a plurality of corresponding primary spontaneous combustion target areas. The detection device for the whole-area spontaneous combustion zone preferably uses a device with high detection speed and low cost, and the device can be used for detecting the primary spontaneous combustion target zone as quickly and efficiently as possible.
S2: based on a preset comprehensive optimization rule, comprehensively optimizing the primary spontaneous combustion target areas to obtain secondary spontaneous combustion target areas; wherein the secondary auto-ignition target area does not exceed the range of any of the primary auto-ignition target areas. The step aims to further narrow the range of the fire zone, the rule of the comprehensive optimization can be preset and stored, and when the secondary spontaneous combustion target zone needs to be calculated, the comprehensive optimization rule is called and the operations including combination, deletion, addition and the like are carried out on each primary spontaneous combustion target zone based on the comprehensive optimization rule, so that the secondary spontaneous combustion target zone is obtained.
S3: sequentially detecting the areas to be detected according to the size of the correspondingly arranged measuring net from large to small based on different types of local area spontaneous combustion area detection devices, and finally obtaining a final stage spontaneous combustion target area; the local area spontaneous combustion area detection device which is firstly used for detection is used for detecting the second-stage spontaneous combustion target area, and the rest local area spontaneous combustion area detection devices are used for detecting the spontaneous combustion target area which is obtained by detection of the local area spontaneous combustion area detection device.
The detection device of a single kind may not be able to take into account all objective conditions of the region to be detected, so that a plurality of detection devices of different kinds detect respectively or step by step, and error information is excluded to ensure accuracy and reliability of detection results. Corresponding measuring nets are arranged on the detection devices of the respective ignition areas, each measuring net can be composed of a plurality of measuring points, obviously, the closer the measuring points are, the smaller the size of the measuring net is, the more accurate the range and the boundary of the spontaneous combustion target area obtained by measurement is, but in the actual detection operation, the too dense measurement may cause the problems of overlarge cost, overlarge detection information amount, lower efficiency and the like, but by progressively searching for the small detection range and the size of the measuring net, under the condition of ensuring the accurate result, the operation efficiency is improved as much as possible, and the operation cost is reduced.
In some embodiments of the invention, the full-area self-ignition region detection means comprises at least two of: unmanned aerial vehicle infrared temperature measuring device and magnetic exploration device. Therefore, the step S1 includes: detecting the ground surface of the area to be detected by adopting an unmanned aerial vehicle infrared temperature measuring device to determine an infrared temperature measuring spontaneous combustion target area; and (3) performing magnetic prospecting on the ground of the region to be detected by adopting a magnetic prospecting device to determine the magnetic prospecting spontaneous combustion target region. The size of the net of the unmanned aerial vehicle infrared temperature measuring device is preferably 2m × 2m, and the size of the net of the magnetic exploration device is preferably 20m × 20 m.
The implementation process of the infrared temperature measuring device for the unmanned aerial vehicle comprises the following steps: and setting measuring points in the area to be measured, setting an automatic flight route based on the measuring points, controlling the unmanned aerial vehicle with the infrared sensor to fly according to the automatic flight route, and processing and analyzing the collected temperature measurement data to obtain the infrared temperature measurement spontaneous combustion target area.
The invention discloses a preferred embodiment of an infrared temperature measuring device of an unmanned aerial vehicle. Carrying out the infrared temperature measurement of unmanned aerial vehicle and surveying at coal field fire district earth's surface, with the leading-in instrument of topography data and the distribution of treating the temperature measurement point, calculating the flight route, the temperature measurement process is realized through the temperature detection module that carries on the unmanned aerial vehicle.
The magnetic exploration device can implement magnetic exploration, specifically, the magnetic exploration is to utilize a proton magnetometer to observe the total magnetic anomaly of a magnetic field of a stratum, extract effective magnetic anomaly field information from a background magnetic field, further purposefully eliminate the processing and conversion of the influence of a non-detection target body, carry out filtering processing and inversion interpretation of data on the basis, and make reasonable conjecture on a high-temperature fire area of a coal field by combining with other information sources such as geology, landform and the like.
The invention discloses a preferred embodiment of a magnetic prospecting device. Two GSM-19T magnetometers were used. First, a day-change station is installed in a region where a magnetic field is stable, and a day-change measurement is performed. The T0 value measurements were taken at a time period of approximately 20m near the diurnal station during which the diurnal plateau before sunrise. The T0 value for this area was found to be 52145.92 nT. And (4) carrying out magnetic field measurement on all measuring points in the measuring area by using another GSM-19T magnetometer. The height of the GSM-19T probe is fixed as four sections of probe rods, and the height is 1.83 m. The magnetic field contour map and the point information are shown in fig. 2 (in practice the map is a color picture). Where the measurement points are represented by black triangles, the left black numbers represent the line numbers and the right numbers are the point numbers. And magnetic field information of No. 1 to No. 7 measuring points of the 1 to No. 6 measuring lines is lost, and the lost part is filled by using a kriging interpolation method so as to facilitate subsequent data processing. According to the IGRF model, the inclination angle I of the magnetic field in the measuring area is 53.8 degrees, and the deflection angle D of the magnetic field is-6.4 degrees. Due to the fact that the measuring work area is small, the geomagnetic fields on all the measuring points can be considered to have the same magnetization dip angle and deflection angle. Because the work area is in a middle latitude area, the oblique magnetization can cause the abnormal deviation of positive and negative magnetism from the theoretical vertical magnetization position. For convenience of data processing and explanation, the magnetic anomaly is polarized, and a contour map of the magnetic anomaly Δ T after polarization can be obtained, see fig. 2 (in actual operation, the map is a color picture).
In some embodiments of the present invention, the step S2 includes: and selecting the intersection part of the infrared temperature measurement spontaneous combustion target area and the magnetic exploration spontaneous combustion target area as a second-stage spontaneous combustion target area.
In some embodiments of the invention, an isotope radon measuring device, a high-density electric device and a transient electromagnetic exploration device are adopted to detect the region to be detected according to the sequence of the sizes of the measuring nets respectively corresponding to the isotope radon measuring device, the high-density electric device and the transient electromagnetic exploration device from large to small, and finally the final spontaneous combustion target region is obtained. The size of each detection measuring net can be set according to actual needs, and the detection sequence of the three detection devices is determined by the size of the measuring net, namely, the detection use sequence of the three detection devices can be changed by changing or adjusting the size of the measuring net.
The isotope radon measuring device can be suitable for an isotope radon measuring method, and radon detection is carried out on a high-temperature region of an overlying goaf in shallow burial depth. After the measurement is finished, processing and analyzing the data by adopting contour line professional software, finally determining a high-temperature region in the detection region, and then calibrating a region with higher relative concentration as a suspected spontaneous combustion ignition region of the mine by taking the radon concentration field test data, the radon concentration contour map and the radon concentration value obtained from the experimental known point as reference.
The high-density electric device is suitable for detecting by a high-density electric method, and specifically comprises the steps of arranging dozens of to hundreds of electrodes on a measuring point at one time according to a certain interval, supplying power to the underground through a power supply electrode A, B, observing potential difference by using an electrode M, N, automatically converting the positions of the power supply and the measuring electrode by an instrument in the measuring process, measuring the resistivity of the whole section of the underground dielectric point, and finally inverting the acquired data to accurately identify the boundary of a fire area.
The transient electromagnetic prospecting device is suitable for transient electromagnetic prospecting, and is a method for detecting the resistivity of a medium by transmitting a primary pulse magnetic field to the underground by using an ungrounded return line or a ground line source and observing a secondary induction eddy current field caused in the underground medium by using a coil or a ground electrode during the interval of the primary pulse magnetic field. The data acquisition device is divided into a transmitting part and a receiving part. A transmitting part needs to be paved with 100 turns of a 40 m-40 m transmitting wire frame, and is supplied with transmitting current 10A with transmitting frequency of 2.5 Hz; and the receiving part adopts an observation time window of 0.1 ms-47.5 ms, the superposition times are 256, and the observation time is 3-5 min. And finally, obtaining an apparent resistivity inversion section diagram through data inversion, and performing data interpretation.
In some embodiments of the present invention, the isotope radon measuring device is used to detect the second spontaneous combustion target area according to a measuring net of 20m by 10m, so as to obtain a third spontaneous combustion target area; detecting the three-level spontaneous combustion target area by adopting the high-density electric device according to a measuring network of 10m by 10m to obtain a four-level spontaneous combustion target area; and detecting the four-stage spontaneous combustion target area by adopting the transient electromagnetic exploration device according to a measuring network of 10m by 5m to obtain a final-stage spontaneous combustion target area.
The invention also discloses a preferred embodiment of the isotope radon measuring device. And (4) lofting according to the designed points, finding out the points required by radon measurement, drilling holes by using a drilling machine, reversely buckling the embedded cup, and marking. And (4) burying the cup for 4 hours, taking the cup, quickly measuring for 3min, and recording data after measurement. If the measured value is abnormal, the measuring point is added. Through testing, 90 points are measured in total, buffer is applied to processing, the processing is overlapped with an underground comparison map, a radon concentration contour map is shown as a graph 4, a radon value distribution three-dimensional stereo map is shown as a graph 5, and the radon concentration of the whole mine area tends to be stable. As can be seen from FIGS. 4 and 5, the radon concentrations of the area A, the area B and the area C are higher than those of other areas, the area A is a rectangle of 25m × 50m and has an area of about 1250m2, which is formed by measuring points L3-08, L4-08, L3-10 and L4-10, the area B is a rectangle of 25m × 10m and has an area of about 250m2, which is centered by measuring points L8-08 and L9-08, and the area C is a rectangle of 25m × 10m and has an area of about 6-10 and L7-10. The coordinates and areas of the centers of the suspected fire areas, and the maximum and average values of radon are shown in Table 1.
TABLE 1 suspected fire area parameter table
In summary, the radon values of the regions A, B and C are generally higher than those of other positions, and are suspected high-temperature regions.
Preferred embodiments of high density electrical devices are also disclosed. And (3) developing high-density electrical prospecting of the ground within the range of the spontaneous combustion target area reduced by the method in the previous step, setting a measuring network of 10m multiplied by 10m, an emission voltage of 256V, a minimum isolation coefficient of 60 and temperature device parameters for collection, and extracting abnormal information and reducing the range of the target area through the found resistivity distribution characteristics of the underground fire area.
The invention discloses a preferred embodiment of a transient electromagnetic surveying apparatus. 363 transient electromagnetic measuring points are distributed in a coal mine fire area. A transmitting part needs to be paved with 100 turns of a 40 m-40 m transmitting wire frame, and is supplied with transmitting current 10A with transmitting frequency of 2.5 Hz; the receiving part adopts an observation time window of 0.1 ms-47.5 ms, the superposition times are 256, and the observation time is 3-5 min. The apparent resistivity is obtained after the acquired induced electromotive force is calculated by a skin depth formula, and finally, the result data is analyzed through data inversion, which is detailed in figure 6.
The red area (the oval area which is surrounded by the line of the number 130 and is positioned in the center), namely the area with apparent resistivity being more than or equal to 130 omega. m, in the graph is judged as a suspected fire area, and finally, after verification, the suspected fire area is consistent in position, thereby providing an important basis for subsequent fire prevention and extinguishing work.
In some embodiments of the invention, the method further comprises: establishing an electromagnetic field dynamic distribution model in the evolution process of the high-temperature fire zone based on the environmental information and the spontaneous combustion characteristic information of the zone to be detected; and identifying the final stage spontaneous combustion target area based on the model to obtain fire area boundary information.
Preferably, on the basis of the spontaneous combustion target areas divided by the methods, the range and the boundary of the spontaneous combustion target areas are adjusted and optimized by combining the information of the regional strata of the coal field, the spreading characteristics of the fracture structure, the mining information of the goaf of the mine, the basic parameter characteristic data of the high-temperature coal rock mass, the ignition and spreading characteristics of the regional coal field, and the like, so that scientific optimization of the range such as elimination of parts which obviously do not belong to the spontaneous combustion target areas can be realized, the position range with higher accuracy is finally obtained, and the accurate identification of the high-temperature target areas and the boundary is realized.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (8)
1. A coal mine spontaneous combustion area comprehensive detection method is characterized by comprising the following steps:
s1: detecting the earth surface of the area to be detected based on different types of full-area spontaneous combustion area detection devices respectively to obtain a plurality of corresponding primary spontaneous combustion target areas;
s2: based on a preset comprehensive optimization rule, comprehensively optimizing the primary spontaneous combustion target areas to obtain secondary spontaneous combustion target areas; wherein the secondary auto-ignition target area does not exceed the range of any of the primary auto-ignition target areas;
s3: sequentially detecting the areas to be detected according to the size of the correspondingly arranged measuring net from large to small based on different types of local area spontaneous combustion area detection devices, and finally obtaining a final stage spontaneous combustion target area; the local area spontaneous combustion area detection device which is firstly used for detection is used for detecting the second-stage spontaneous combustion target area, and the rest local area spontaneous combustion area detection devices are used for detecting the spontaneous combustion target area which is obtained by detection of the local area spontaneous combustion area detection device.
2. The method for comprehensively detecting a self-ignition region in a coal mine according to claim 1, wherein the step S1 includes:
detecting the ground surface of the area to be detected by adopting an unmanned aerial vehicle infrared temperature measuring device to determine an infrared temperature measuring spontaneous combustion target area;
and (3) performing magnetic prospecting on the ground of the region to be detected by adopting a magnetic prospecting device to determine the magnetic prospecting spontaneous combustion target region.
3. The method for comprehensively detecting the spontaneous combustion region in the coal mine according to claim 2, wherein the step of detecting the ground surface of the region to be detected by adopting an unmanned aerial vehicle infrared temperature measuring device to determine an infrared temperature measuring spontaneous combustion target region comprises the following steps:
and setting measuring points in the area to be measured, setting an automatic flight route based on the measuring points, controlling the unmanned aerial vehicle with the infrared sensor to fly according to the automatic flight route, and processing and analyzing the collected temperature measurement data to obtain the infrared temperature measurement spontaneous combustion target area.
4. The method for comprehensively detecting the spontaneous combustion region in the coal mine according to claim 2, wherein the step of detecting the ground surface of the region to be detected by adopting the infrared temperature measuring device of the unmanned aerial vehicle to determine the target region of the infrared temperature measuring spontaneous combustion comprises the following steps:
the unmanned aerial vehicle infrared temperature measuring device detects the ground surface of the area to be measured according to a 2 m-2 m measuring network to determine an infrared temperature measuring spontaneous combustion target area;
the method for determining the spontaneous combustion target area of magnetic prospecting by adopting the magnetic prospecting device to perform magnetic prospecting on the ground of the area to be detected comprises the following steps:
and the magnetic exploration device performs magnetic exploration on the ground of the area to be detected according to the measuring network of 20m by 20m to determine the magnetic exploration spontaneous combustion target area.
5. The method for comprehensively detecting a self-ignition region in a coal mine according to claim 2, wherein the step S2 includes:
and selecting the intersection part of the infrared temperature measurement spontaneous combustion target area and the magnetic exploration spontaneous combustion target area as a second-stage spontaneous combustion target area.
6. The method of claim 1, wherein an isotope radon measuring device, a high density electrical device, and a transient electromagnetic prospecting device are used to detect the area to be detected in the descending order of the sizes of the corresponding nets, and finally the final spontaneous combustion target area is obtained.
7. The method for comprehensively detecting the spontaneous combustion regions in the coal mines according to claim 6, wherein the isotope radon measuring device is adopted to detect the secondary spontaneous combustion target regions according to a measuring net of 20m by 10m to obtain three-level spontaneous combustion target regions;
detecting the three-level spontaneous combustion target area by adopting the high-density electric device according to a measuring network of 10m by 10m to obtain a four-level spontaneous combustion target area;
and detecting the four-stage spontaneous combustion target area by adopting the transient electromagnetic exploration device according to a measuring network of 10m by 5m to obtain the final-stage spontaneous combustion target area.
8. A method for comprehensively detecting a self-ignition region in a coal mine according to any one of claims 1 to 7, characterized by further comprising:
and optimizing the final spontaneous combustion target area again based on the stratum information of the coal field region of the region to be detected, the fracture structure spreading characteristic information, the mining information of the mine goaf, the basic parameter characteristic data of the high-temperature coal-rock mass and the ignition and spread characteristic information of the regional coal field fire region.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903751.4A CN113805248B (en) | 2021-08-06 | 2021-08-06 | Comprehensive detection method for spontaneous combustion area of coal mine |
| AU2022202145A AU2022202145B2 (en) | 2021-08-06 | 2022-03-29 | Comprehensive detection method for coal mine spontaneous combustion fire zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903751.4A CN113805248B (en) | 2021-08-06 | 2021-08-06 | Comprehensive detection method for spontaneous combustion area of coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113805248A true CN113805248A (en) | 2021-12-17 |
| CN113805248B CN113805248B (en) | 2024-03-15 |
Family
ID=78942808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110903751.4A Active CN113805248B (en) | 2021-08-06 | 2021-08-06 | Comprehensive detection method for spontaneous combustion area of coal mine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113805248B (en) |
| AU (1) | AU2022202145B2 (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2365759C1 (en) * | 2008-03-04 | 2009-08-27 | Анатолий Янович Каминский | Estimation method of endogenous fire hazard of sheths |
| CN102508309A (en) * | 2011-10-31 | 2012-06-20 | 中国矿业大学 | Method for detecting coal field fire district distribution range |
| CN103605987A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Coal field fire area determining method and device |
| RU2631516C1 (en) * | 2016-06-29 | 2017-09-25 | АКЦИОНЕРНОЕ ОБЩЕСТВО "НАУЧНЫЙ ЦЕНТР ВОСТНИИ ПО БЕЗОПАСНОСТИ РАБОТ В ГОРНОЙ ПРОМЫШЛЕННОСТИ" (АО "НЦ ВостНИИ") | Method for detecting underground fires |
| RU2642202C1 (en) * | 2016-06-08 | 2018-01-24 | Владимир Васильевич Чернявец | Unmanned vehicle and surveillance complex for it |
| CN107780971A (en) * | 2017-10-20 | 2018-03-09 | 新疆维吾尔自治区煤田灭火工程局 | A kind of magnetoelectricity heat becomes the coal-field fire detection method in source step by step |
| CN107843939A (en) * | 2017-10-24 | 2018-03-27 | 防灾科技学院 | Coal fire recognition methods based on unmanned plane thermal infrared imagery |
| CN109581513A (en) * | 2018-12-25 | 2019-04-05 | 核工业北京地质研究院 | A kind of Formation of Sandstone-type Uranium Deposits ore target location method based on multi-spatial scale |
| WO2019200821A1 (en) * | 2018-04-18 | 2019-10-24 | 中国矿业大学 | Temperature measuring-while-drilling apparatus for detecting autoignition temperature of coal |
| CN110748381A (en) * | 2019-09-20 | 2020-02-04 | 山东科技大学 | Method and system for acoustic detection of high-temperature fire zone position of goaf under coal mine |
| CN110761840A (en) * | 2019-09-20 | 2020-02-07 | 山东科技大学 | Coal mine goaf fire zone detection system and method based on infrasonic wave information transmission |
| CN112255693A (en) * | 2020-10-20 | 2021-01-22 | 陕西煤业化工技术研究院有限责任公司 | Goaf filling space detection method under coal mine fully mechanized caving coal mining process condition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111368782B (en) * | 2020-03-16 | 2023-11-14 | 中移雄安信息通信科技有限公司 | Training method of coal fire area recognition model, and coal fire area recognition method and device |
| CN111563957B (en) * | 2020-05-06 | 2023-03-31 | 中国矿业大学 | Three-dimensional temperature field digital imaging method for coal field fire and gangue dump fire |
-
2021
- 2021-08-06 CN CN202110903751.4A patent/CN113805248B/en active Active
-
2022
- 2022-03-29 AU AU2022202145A patent/AU2022202145B2/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2365759C1 (en) * | 2008-03-04 | 2009-08-27 | Анатолий Янович Каминский | Estimation method of endogenous fire hazard of sheths |
| CN102508309A (en) * | 2011-10-31 | 2012-06-20 | 中国矿业大学 | Method for detecting coal field fire district distribution range |
| CN103605987A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Coal field fire area determining method and device |
| RU2642202C1 (en) * | 2016-06-08 | 2018-01-24 | Владимир Васильевич Чернявец | Unmanned vehicle and surveillance complex for it |
| RU2631516C1 (en) * | 2016-06-29 | 2017-09-25 | АКЦИОНЕРНОЕ ОБЩЕСТВО "НАУЧНЫЙ ЦЕНТР ВОСТНИИ ПО БЕЗОПАСНОСТИ РАБОТ В ГОРНОЙ ПРОМЫШЛЕННОСТИ" (АО "НЦ ВостНИИ") | Method for detecting underground fires |
| CN107780971A (en) * | 2017-10-20 | 2018-03-09 | 新疆维吾尔自治区煤田灭火工程局 | A kind of magnetoelectricity heat becomes the coal-field fire detection method in source step by step |
| CN107843939A (en) * | 2017-10-24 | 2018-03-27 | 防灾科技学院 | Coal fire recognition methods based on unmanned plane thermal infrared imagery |
| WO2019200821A1 (en) * | 2018-04-18 | 2019-10-24 | 中国矿业大学 | Temperature measuring-while-drilling apparatus for detecting autoignition temperature of coal |
| CN109581513A (en) * | 2018-12-25 | 2019-04-05 | 核工业北京地质研究院 | A kind of Formation of Sandstone-type Uranium Deposits ore target location method based on multi-spatial scale |
| CN110748381A (en) * | 2019-09-20 | 2020-02-04 | 山东科技大学 | Method and system for acoustic detection of high-temperature fire zone position of goaf under coal mine |
| CN110761840A (en) * | 2019-09-20 | 2020-02-07 | 山东科技大学 | Coal mine goaf fire zone detection system and method based on infrasonic wave information transmission |
| CN112255693A (en) * | 2020-10-20 | 2021-01-22 | 陕西煤业化工技术研究院有限责任公司 | Goaf filling space detection method under coal mine fully mechanized caving coal mining process condition |
Non-Patent Citations (11)
| Title |
|---|
| BIN DU，YUNTAO LIANG，FUCHAO TIAN: "Detecting concealed fire sources in coalfield fires：An application study", FIRE SAFETY JOURNAL, vol. 121, pages 1 - 8 * |
| BO TAN等: "firefighting of subsurface coal fires with comprehensive techniques for detection and control：a case study of the FuKang coal fire in the Xinjiang region of China", ENVIRONMENT SCIENCE AND POLLUTION RESEARCH, vol. 26, no. 29, pages 570 - 584 * |
| 吉宏泰;梁璐;: "现代勘查技术在蒙东地区煤炭火区中的应用", 金属矿山, no. 04, pages 186 - 190 * |
| 孙景龙等: "托克逊乌尊布拉克火区综合勘查技术应用", 煤炭与化工, vol. 41, no. 06, pages 48 - 49 * |
| 张秀山: "新疆煤田火烧区特征及灭火问题探讨", 中国煤田地质, vol. 16, no. 01, pages 18 - 21 * |
| 林金波;刘鸿福;张和生;: "物探方法在煤矿地下火区探测中的应用", 现代矿业, no. 12, pages 69 - 70 * |
| 梁运涛等: "我国煤矿火灾防治现状及发展对策", 煤炭科学技术, vol. 44, no. 06, pages 1 - 7 * |
| 王立虎;: "综合物探在内蒙某煤矿火区范围圈定中的应用", 宁夏工程技术, no. 04, pages 372 - 375 * |
| 许满贵等: "煤自燃危险区域磁法判定技术及应用", 矿业安全与环保, vol. 41, no. 02, pages 41 - 44 * |
| 邵振鲁;王德明;王雁鸣;: "煤田火灾探测方法研究进展", 煤矿安全, no. 08, pages 189 - 192 * |
| 郭刚;贾继标;黄丹青;李大伟;郭洪信;: "鄂尔多斯浅层煤矿煤火区探测方法", 煤矿安全, vol. 44, no. 09, pages 137 - 139 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022202145A1 (en) | 2023-02-23 |
| CN113805248B (en) | 2024-03-15 |
| AU2022202145B2 (en) | 2023-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112965141B (en) | Delineating method of ore-forming favorable section of uranium polymetallic ore | |
| CN106896415A (en) | A kind of short offset distance transient electromagnetic detecting method of ground well grounded source | |
| CN104330832A (en) | Transient electromagnetic quick three-dimensional human-machine interaction inversion method | |
| CN110333543A (en) | Post non of low resistance body explanation and imaging method and system based on reflection coefficient analysis | |
| CN109343130A (en) | A kind of the Loop source ground well transient electromagnetic detecting method and system of broadside | |
| CN105842738B (en) | A kind of buried target body quantitatively judges method and apparatus extremely | |
| CN113805248A (en) | Comprehensive detection method for spontaneous combustion area of coal mine | |
| CN104391335A (en) | Extracting method of transient electromagnetic pure abnormal signal | |
| CN104793268B (en) | The blind depth measurement method and device of a kind of transient electromagnetic detecting | |
| CN114061428B (en) | Rock stratum displacement monitoring device and method for three-dimensional similarity simulation experiment | |
| Adeniji et al. | Combined Geoelectrical and Statistical Approach in Subsurface Structural Mapping for Groundwater Prospect at Oke-Odo, Iwo, Southwestern Nigeria | |
| Lück et al. | Geophysical prospection of archaeological sites in Brandenburg, Germany | |
| Iakovleva et al. | Study of the magnetic permeability of mountain rocks based on the comprehensive analysis of the pulsed electromagnetic field parameters | |
| CN110058318A (en) | A kind of one-dimensional square bearing calibration of the natural electric field based on measuring electrode coordinate | |
| Marko et al. | Multi-method field detection of map-scale faults and their parameters–case study from the Vikartovce fault (Western Carpathians) | |
| Mathieson et al. | The National Museums of Scotland Saqqara survey project, earth sciences 1990–1998 | |
| CN114460669A (en) | Detection method for blind carbon-rich manganese carbonate ore | |
| Ariyo et al. | Integration Of Magnetic Residuals, Derivatives And Located Euler Deconvolution For Structural And Geologic Mapping Of Parts Of The Precambrian Gneisses Of Ago-Iwoye, Southwestern Nigeria | |
| CN114019570B (en) | Method for detecting goaf through cooperation of space hole and ground hole and integrated transient electromagnetic | |
| CN111158058B (en) | Method for detecting metal abandoned well based on geomagnetic memory | |
| CN117233847A (en) | Deposition type rare earth prospecting method based on geophysical data analysis | |
| CN106383363A (en) | Geological exploration method based on two-dimensional charging method | |
| CN118011501A (en) | Deep spontaneous combustion region detection method based on full waveform data multi-parameter joint inversion of transient electromagnetic method | |
| CN117908158A (en) | Combined prospecting method combining large scale map filling and geophysical prospecting | |
| Folkes | Integrating gravity, seismic, AEM and MT data to investigate crustal architecture and cover thickness: modelling new geophysical data from the Southern Thomson region |
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 |