Coal mining face rapid temperature measurement, fire prevention and extinguishing device and method

Abstract

The invention discloses a rapid temperature measurement and fire prevention device for a coal mining face, comprising a plurality of first pipe bodies, a plurality of first tees, and a plurality of temperature measurement components; a plurality of boreholes are provided on the ventilation area working face, the boreholes extend to the goaf, the first pipe body is inserted into the borehole, and the first tee is connected to the first pipe body; the temperature measurement component comprises a first hose, a second tee, a second hose, and a measuring nozzle connected in sequence, and the temperature measurement device is connected to the second tee; it also comprises a grouting pipeline, the grouting main pipe is sequentially connected into a pipeline through a plurality of third tees, a plurality of grouting branch pipes are connected to the third interface of the third tee, and the grouting branch pipe is connected to the quick-connect valve when grouting is required. And the use method, the beneficial effects of the invention: by arranging the first pipe body in the borehole, the real value of the gas and temperature can be checked in the goaf; at the same time, the first pipe body can be used as a measure pipe to grout the goaf, prevent and slow down the oxidation rate of the coal body, and achieve the effect of fire prevention.

Description

Technical Field

[0001] The invention relates to a temperature measuring device, and in particular to a rapid temperature measuring and fire prevention and extinguishing device and method for a coal mining working face. Background Art

[0002] During the period of coal mining or crossing faults, fire prevention prediction and forecasting must be strengthened. Usually, a fire observation hole is set behind the frame, and the observation hole goes deep into the goaf or coal rock behind the hydraulic support by ≮300mm. It is used to check the gas parameters such as gas and CO in the goaf or coal rock, as well as the temperature of the goaf.

[0003] There are two main strategies for cooling down: one is the expensive coal mine cooling system, which mainly establishes an air temperature regulating station on the surface and connects it with underground tunnels through pipelines to reduce the temperature of the underground mining area. This system is costly and consumes a lot of electricity; the other is to take a series of cooling measures, such as reducing the length of the working face, changing the cooling method, optimizing the design of the mining area and ventilation, etc. These methods have reduced the temperature of the mining area to a certain extent, but their efficiency is often limited; the third is to use heat-absorbing materials to absorb heat, such as application number 201510984398.1. A goaf cooling device using heat-absorbing filling materials, characterized in that it includes a filling body, an air inlet tunnel, an external cooling pipe, a cooling pipeline and a return air tunnel. The filling body is filled in the goaf, and the material used for the filling body is a heat-absorbing material; the cooling pipeline is arranged in the filling body, and the air inlet tunnel and the return air tunnel are respectively arranged on both sides of the unmined coal area, and the air inlet tunnel is arranged corresponding to the air inlet of the cooling pipeline; the external cooling pipe is connected to the air outlet of the cooling pipeline; a plurality of air outlets are provided on the side wall of the external cooling pipe, and the air outlet is arranged toward the coal mining face. Although this method can be used for cooling, the arrangement of the device is relatively cumbersome and the cost of the filling material is high.

[0004] At present, the fire observation pipe must use a processed 6-point iron pipe with a sharp tip on the head of the iron pipe, which is inserted into the coal rock mass to detect the gas, CO and temperature of the goaf or coal rock mass. In actual application, the depth of insertion into the goaf is not enough, making it difficult to accurately detect the above parameters. When there is a risk of spontaneous combustion of coal seams in the goaf, the insertion pipe cannot be used as a measure hole, and the fire prevention and extinguishing effect is poor.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The technical problem to be solved by the present invention is: how to solve the problem that the fire observation pipe in the prior art cannot meet the requirements of subsequent fire prevention and extinguishing.

[0007] The present invention solves the above technical problems through the following technical means:

[0008] A rapid temperature measurement and fire prevention device for a coal mining face is arranged in a ventilation area of ​​a fully mechanized mining face, and includes a plurality of first pipe bodies, a plurality of first tees, and a plurality of temperature measurement components; a plurality of boreholes are provided in the ventilation area working face, the boreholes extend to the goaf, the first pipe bodies are inserted into the boreholes, and the first tees are connected to the first pipe bodies;

[0009] Each of the temperature measuring components comprises a measuring nozzle, a temperature measuring device, a first hose, a second tee, and a second hose, wherein three interfaces of the second tee are respectively connected to the first hose, the second hose, and the temperature measuring device, the second tee is placed in the first tee, the temperature measuring device is connected to the second tee after being inserted into the first tee from the outside, the first hose is placed in the first tube body, and the other end of the second hose is connected to the measuring nozzle;

[0010] It also includes a slurry spraying pipeline, which includes a slurry spraying main pipe, multiple third tees, and multiple slurry spraying branch pipes. The slurry spraying main pipe is connected in sequence into a pipeline through multiple third tees, and the multiple slurry spraying branch pipes are connected to the third interface of the third tee. The slurry spraying branch pipes are connected to the quick-connect valve when slurry spraying is required.

[0011] The present invention arranges the first tube body in the borehole, so that the gas tester can quickly and accurately measure the temperature of the goaf during the gas extraction process, and can go deep into the goaf to check the true value of the gas and temperature, providing accurate parameter support for the fire prevention prediction and forecast of the coal mining face; at the same time, the first tube body can be used as a measure tube to spray slurry on the goaf to effectively prevent and slow down the oxidation rate of the coal body, and eliminate the hidden danger of spontaneous combustion in the goaf; prevent the high temperature point from appearing in the goaf, thereby eliminating the hidden danger of spontaneous combustion of the coal and gangue in the goaf, and spray slurry in the goaf to cover the coal body to increase humidity and cool down, isolate oxygen, and slow down the oxidation rate of the coal body. After the slurry is precipitated, it fills the gaps in the coal body to further isolate the gaps from air leakage, prevent the oxidation of the coal body, and thus achieve the effect of fire prevention and extinguishing; and the present invention has a simple structure, is easy to manufacture, is low in cost, can be reused, and can also be used to accurately measure the gas and temperature parameters of the goaf and fire prevention points and quickly deal with hidden dangers in the process of excavating small coal pillars along the empty coal lane, and has strong promotion.

[0012] Preferably, it also includes a second pipe body, one end of which is connected to the first three-way connection, and the other end is connected to the quick-connect valve, and the quick-connect valve is connected to the slurry spraying branch pipe.

[0013] Preferably, the end of the first tube body connected to the first tee has an internal thread, the end away from the first tee is wedge-shaped, and the end face is arc-shaped. The end of the first tube body placed in the goaf has a wedge shape, and the end face is arranged in an arc shape, so as to facilitate the insertion of the first tube body into the borehole.

[0014] Preferably, the end of the first pipe body away from the first tee has a plurality of grouting holes, so that the grouting can be more uniform and cover a larger area.

[0015] Preferably, it also includes a flame retardant gauze, which is cylindrical and installed inside one end of the first tube body away from the first tee, to prevent high temperature from damaging the first tube body and the first hose.

[0016] Preferably, the diameter of the drill hole is greater than or equal to 30 mm, and the outer diameter of the first tube body is equal to the drill hole diameter. A larger drill hole facilitates the installation of a larger first tube body, so that the first tube body can be used for two purposes, serving as an accurate and fast prediction and forecast observation tube, and also as a measure tube for eliminating the hidden dangers of spontaneous combustion.

[0017] Preferably, the temperature measuring device is a thermometer.

[0018] The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face is characterized in that the rapid temperature measurement and fire prevention and extinguishing device for coal mining working face is adopted, and the method comprises the following steps:

[0019] S01: Drill holes along the empty side behind the frame to the goaf;

[0020] S02: Connect the first pipe body with the first tee, and connect the first hose, the second tee, and the second hose in sequence and place them in the first pipe body and the first tee, and make the second tee located at the first tee, insert the temperature measuring device from the outside into the first tee and connect it to the second tee, connect the other end of the second hose to the measuring nozzle, detect the concentration of gas and CO in the goaf through the detection equipment, and measure the temperature with the temperature measuring device;

[0021] S03: When it is necessary to spray grout on the goaf, unplug the measuring nozzle, connect the spraying branch pipe to the second tee, and spray grout.

[0022] Preferably, it also includes a second tube body, one end of which is connected to the first tee. When measuring temperature and gas, the second hose is located in the second tube body. When sprinkling slurry, the other end of the second tube body is connected to the quick-connect valve, and the quick-connect valve is connected to the slurry sprinkling branch pipe.

[0023] Preferably, the specific steps of step S01 are: setting an observation point for every 10 frames on the working face of the ventilation area, using a pneumatic drilling rig with a twist drill rod to drill holes at each observation point, with a hole diameter of at least 30 mm, opening a hole 0.5-1.5 m away from the top plate along the empty side behind the frame, and drilling holes vertically along the coal seam inclination to the goaf.

[0024] The advantages of the present invention are:

[0025] (1) The present invention arranges the first tube body in the borehole, so that the gas tester can quickly and accurately measure the temperature of the goaf during the gas extraction process, and can go deep into the goaf to check the true value of the gas and temperature, providing accurate parameter support for the fire prevention prediction and forecast of the coal mining face; at the same time, the first tube body can be used as a measure tube to spray slurry on the goaf to effectively prevent and slow down the oxidation rate of the coal body, and eliminate the hidden danger of spontaneous combustion in the goaf; prevent the appearance of high-temperature points in the goaf, thereby eliminating the hidden danger of spontaneous combustion of the coal and gangue in the goaf, and spray slurry on the goaf to cover the coal body to increase humidity and cool down, isolate oxygen, and slow down the oxidation rate of the coal body. After the slurry is precipitated, it fills the gaps in the coal body to further isolate the gaps from air leakage, prevent the oxidation of the coal body, and achieve the effect of fire prevention and extinguishing; and the present invention has a simple structure, is easy to manufacture, is low in cost, and can be reused. It can also be used to accurately measure the gas and temperature parameters of the goaf and fire prevention points and quickly deal with hidden dangers during the excavation of small coal pillars along the empty coal lanes, and has strong promotion.

[0026] (2) One end of the first tube body placed in the goaf has a wedge shape, and the end face is arranged in an arc shape, so as to facilitate the insertion of the first tube body into the drill hole.

[0027] (3) The slurry spraying holes can make the slurry spraying more uniform and cover a larger area;

[0028] (4) The larger drill hole facilitates the installation of a larger first pipe body, so that the first pipe body can be used for two purposes: as an accurate and fast prediction and forecasting observation pipe, and also as a measure pipe for eliminating the hidden dangers of spontaneous combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a rapid temperature measurement and fire prevention and extinguishing device for a coal mining working face according to an embodiment of the present invention (the device is used as an observation tube at this time);

[0030] Figure 2 It is a structural schematic diagram of a first pipe body, a first tee, and a second pipe body;

[0031] Figure 3 It is a structural schematic diagram of the temperature measurement component;

[0032] Figure 4 It is a structural schematic diagram of the device when used as a measure pipe;

[0033] Figure 5 It is a schematic diagram of observation point arrangement;

[0034] Figure 6 This is a schematic diagram of the connection of the grouting pipeline behind the working face frame;

[0035] Figure 7 (1) Temperature change of measuring point 7# after slurry spraying;

[0036] Figure 7 (2) Temperature change at measuring point 13# after slurry spraying.

[0037] Numbers in the figure: 1. first tube body; 11. slurry sprinkling hole; 12. flame-retardant gauze; 2. first tee; 3. second tube body; 4. temperature measuring assembly; 41. measuring nozzle; 42. temperature measuring device; 43. first hose; 44. second tee; 45. second hose; 5. quick-connect valve; 6. slurry sprinkling pipeline; 61. slurry sprinkling main pipe; 62. third tee; 63. slurry sprinkling branch pipe. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] like Figure 1 As shown in the figure, the coal mining face rapid temperature measurement and fire prevention and extinguishing device is installed in the ventilation area of ​​the fully mechanized mining face. This embodiment takes the fully mechanized mining face 1122 (3) of Zhuji East Mine as an example. This working face is located in the East Wing South Plate Mining Area and is the first 13# coal fully mechanized mining working face in the East Wing South Plate Mining Area. Figure 5 As shown, a measuring point is set for every 10 frames in the ventilation area, with a total of 13 observation points. Each observation point is constructed using a pneumatic drilling rig with a twist drill rod. A hole is opened 1m away from the roof along the empty side behind the frame. The hole is drilled vertically behind the frame and constructed along the inclination of the coal seam to the goaf.

[0041] Combination Figure 2 , Figure 4 As shown, the rapid temperature measurement and fire prevention and extinguishing device for coal mining working face comprises a plurality of first pipe bodies 1, a plurality of first tees 2, a plurality of second pipe bodies 3, and a plurality of groups of temperature measuring components 4. Each borehole is equipped with a first pipe body 1, a first tee 2, a second pipe body 3, and a temperature measuring component 4; the first pipe body 1 is inserted into the borehole, the left end of the first tee 2 is connected to the first pipe body 1, and the right end of the first tee 2 is connected to the second pipe body 3;

[0042] The first tube body 1 is made of an iron pipe, and the end of the first tube body 1 extending into the goaf has a plurality of slurry spraying holes 11, which can make the slurry spraying more uniform and cover a larger area. The end is provided with a flame-retardant gauze 12, which is cylindrical and installed inside the end of the first tube body 1 away from the first tee 2 to prevent high temperature from damaging the first tube body 1 and the first hose 43; the end of the first tube body 1 extending into the goaf is wedge-shaped, and the end face is arc-shaped. The end of the first tube body 1 placed in the goaf has a wedge shape, and the end face is arranged with an arc, which is convenient for the first tube body 1 to be inserted into the drill hole; the other end of the first tube body 1 has an external thread, the first tee 2 has an internal thread connected thereto, and the other end of the first tee 2 also has an internal thread, and the second tube body 3 has an external thread corresponding thereto, and the third end of the first tee 2 is used for the insertion of the temperature measuring device 42, and the other end of the second tube body 3 is connected to the quick-connect valve 5, and the quick-connect valve 5 is connected to the slurry spraying branch pipe 63.

[0043] like Figure 3 As shown, each of the temperature measuring components 4 includes a measuring nozzle 41, a temperature measuring device 42, a first hose 43, a second tee 44, and a second hose 45. The three interfaces of the second tee 44 are respectively connected to the first hose 43, the second hose 45, and the temperature measuring device 42. The second tee 44 is placed in the first tee 2. The temperature measuring device 42 is inserted into the first tee 2 from the outside and then connected to the second tee 44. The first hose 43 is placed in the first tube body 1, and the other end of the second hose 45 is connected to the measuring nozzle 41.

[0044] like Figure 6 As shown, the rapid temperature measurement and fire prevention and extinguishing device for the coal mining working face also includes a slurry sprinkling pipeline 6, which includes a slurry sprinkling main pipe 61, multiple third tees 62, and multiple slurry sprinkling branch pipes 63. The slurry sprinkling main pipe 61 is connected in sequence into a pipeline through multiple third tees 62, the end of the slurry sprinkling main pipe 61 is blocked, and the multiple slurry sprinkling branch pipes 63 are connected to the third interface of the third tee 62. The slurry sprinkling branch pipes 63 are connected to the quick-connect valve 5 when slurry sprinkling is required.

[0045] By arranging the first tube body 1 in the borehole, the embodiment can enable the gas tester to quickly and accurately measure the temperature of the goaf during the gas extraction process, and can go deep into the goaf to check the true value of the gas and temperature, providing accurate parameter support for the fire prevention prediction and forecast of the coal mining face; at the same time, the first tube body 1 can be used as a measure tube to spray slurry on the goaf to effectively prevent and slow down the oxidation rate of the coal body, and eliminate the hidden danger of spontaneous combustion in the goaf; prevent the appearance of high-temperature points in the goaf, thereby eliminating the hidden danger of spontaneous combustion of the coal and gangue in the goaf, and spray slurry in the goaf to cover the coal body to increase humidity and cool down, isolate oxygen, and slow down the oxidation rate of the coal body. After the slurry is precipitated, it fills the gaps in the coal body to further isolate the gaps from air leakage, prevent the oxidation of the coal body, and thus achieve the effect of fire prevention and extinguishing; and the present invention has a simple structure, is easy to manufacture, has low cost, can be reused, and can also be used to accurately measure the gas and temperature parameters of the goaf and fire prevention points and quickly deal with hidden dangers during the excavation of small coal pillars along the empty coal lanes, and has strong promotion.

[0046] Embodiment 2:

[0047] On the basis of the first embodiment, the borehole has a diameter of 32 mm, and the outer diameter of the first tube body 1 is equal to the borehole diameter. A larger borehole facilitates the installation of a larger first tube body 1, so that the first tube body 1 can be used for two purposes, namely, as an accurate and fast prediction and forecast observation tube, and also as a measure tube for eliminating the hidden danger of spontaneous combustion.

[0048] In this embodiment, the temperature measuring device 42 is a thermometer.

[0049] This embodiment also provides a method for rapid temperature measurement and fire prevention and extinguishing of coal mining working faces. The above-mentioned rapid temperature measurement and fire prevention and extinguishing device for coal mining working faces is used. Taking the 1122 (3) comprehensive mining working face of Zhuji East Mine as an example, the 1122 (3) comprehensive mining working face is located in the East Wing Nanpan Mining Area. It is the first 13# coal comprehensive mining working face in the East Wing Nanpan Mining Area and is currently suspended. According to the coal spontaneous combustion test report, the spontaneous combustion period of 13# coal in Zhuji East Mine is 94 days, and the critical temperature of the coal seam is 55-65°C. In order to eliminate the hidden dangers of spontaneous combustion of coal seams and prevent spontaneous combustion accidents during the working period, it is particularly important to strengthen the on-site fire prevention prediction and forecasting work;

[0050] The specific steps include:

[0051] like Figure 5 As shown, S01: Drill holes along the empty side behind the rack to the goaf. Specifically, one observation point is set for every 10 racks on the working surface of the ventilation area. A pneumatic drill with a twist drill rod is used to drill holes at each observation point. The hole diameter is at least 32 mm. A hole is opened at 0.5-1.5 m from the top plate along the empty side behind the rack. The holes are drilled vertically along the coal seam inclination to the goaf. In this embodiment, 13 observation points are set.

[0052] S02: Connect the first tube body 1 with the first tee 2, connect one end of the second tube body 3 with the first tee 2, and fix the first tube body 1 on the hydraulic support, connect the first hose 43, the second tee 44, and the second hose 45 in sequence and place them in the first tube body 1, the first tee 2, and the second tube body 3, and make the second tee 44 located at the first tee 2, insert the thermometer from the outside into the first tee 2 and connect it to the second tee 44, connect the other end of the second hose 45 to the measuring nozzle 41, detect the concentration of gas and CO in the goaf through the detection equipment, and measure the temperature with the thermometer;

[0053] S03: If it is necessary to spray grout on the goaf, unplug the measuring nozzle 41, connect each spray branch pipe 63 to the second pipe body 3, open the spray main pipe 61, and spray grout.

[0054] Each section of the grouting main pipe 61 is a high-pressure hose with a diameter of 31.5 mm and a length of 10 m. The third tee 62 is fixed to the support column behind the observation point by a clip. A stop valve can also be arranged on the grouting branch pipe 63 to control each grouting branch pipe 63; the grouting pipeline 6 can be connected to the track grouting pipeline.

[0055] The temperature of the goaf is measured by the above device and method. The measured value can directly reflect the degree of oxidation and self-heating of the coal and gangue in the goaf, analyze the temperature distribution and law of the goaf, and provide a certain basis for preventing spontaneous combustion of the goaf. The goaf rapid temperature measurement and the measured curve of the temperature of the measuring point changing with the depth of the goaf are drawn. The horizontal axis is the depth of the back of the goaf (m), and the vertical axis is the temperature of the goaf (℃).

[0056] Through the analysis of the field measured data, the temperature gradient of the measuring points in the goaf area on the air intake side (10 to 30 frames) with the advancement distance is not large, while the temperature gradient of the measuring points in the goaf area on the return air side (80 to 130 frames) with the advancement distance is large. For the observation points with large gradient changes, grouting treatment is carried out.

[0057] Sprinkling slurry in the goaf to cover the coal body increases humidity and reduces temperature, isolates oxygen, and slows down the oxidation rate of the coal body. After the slurry settles, it fills the gaps in the coal body to further isolate the gaps from air leakage, prevents the coal body from oxidizing, and thus achieves the effect of fire prevention and extinguishing. Figures 7(1) and 7(2) show the measured curves of the temperature of the intubation point after slurry is sprinkled in the goaf with the depth of the goaf. The horizontal axis is the depth of the back of the goaf (m), and the vertical axis is the temperature of the goaf (℃). The upper curves in 7(1) and 7(2) are before slurry is sprinkled, and the lower curves are after slurry is sprinkled.

[0058] It can be seen that the comparison of the temperature measurement results of the goaf before and after spraying grout in the goaf through the grouting pipeline connecting the tube shows that the slurry coverage can prevent the floating coal in the goaf from continuing to oxidize and eliminate the appearance of high-temperature points in the goaf, thereby eliminating the hidden dangers of spontaneous combustion of residual coal and gangue in the goaf.

[0059] The device has a simple structure, is easy to manufacture, and has low cost. It only requires the modification of ordinary iron pipes. The average manufacturing cost is 46 yuan per pipe (tube body, thermometer, and quick connector), and it can be reused. The gas tester can quickly and accurately measure the temperature of the goaf during the gas extraction process, providing accurate parameter support for the fire prevention prediction and forecast of the coal mining face. At the same time, the intubation tube can be used as a measure tube to spray slurry on the goaf to effectively prevent and slow down the oxidation rate of the coal body and eliminate the hidden danger of spontaneous combustion in the goaf. In the process of excavating small coal pillars along the empty coal roadway, it can also be used to accurately measure the gas and temperature parameters of the goaf and fire prevention points and to quickly deal with hidden dangers. Taking all factors into consideration, this technology is worthy of promotion and application.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for rapid temperature measurement and fire prevention and extinguishing at a coal mining face, characterized in that: The rapid temperature measurement and fire prevention device of the coal mining working face is used, and the rapid temperature measurement and fire prevention device of the coal mining working face is arranged in the ventilation area of ​​the fully mechanized mining working face. The rapid temperature measurement and fire prevention device of the coal mining working face includes a plurality of first pipe bodies, a plurality of first tees, and a plurality of groups of temperature measurement components; a plurality of boreholes are provided in the working face of the ventilation area, and the boreholes extend to the goaf, and the first pipe bodies are inserted into the boreholes, and the first tees are connected to the first pipe bodies; Each of the temperature measuring components comprises a measuring nozzle, a temperature measuring device, a first hose, a second tee, and a second hose, wherein three interfaces of the second tee are respectively connected to the first hose, the second hose, and the temperature measuring device, the second tee is placed in the first tee, the temperature measuring device is connected to the second tee after being inserted into the first tee from the outside, the first hose is placed in the first tube body, and the other end of the second hose is connected to the measuring nozzle; It also includes a grouting pipeline, which includes a grouting main pipe, multiple third tees, and multiple grouting branches. The grouting main pipe is sequentially connected to form a pipeline through the multiple third tees, and the multiple grouting branches are connected to the third interface of the third tees. When grouting is required, the grouting branches are connected to the quick-connect valve; It also includes a second pipe body, one end of which is connected to the first three-way connection, and the other end is connected to the quick-connect valve, and the quick-connect valve is connected to the slurry spraying branch pipe; One end of the first tube body connected to the first tee has an internal thread, and the end away from the first tee is wedge-shaped, and the end surface is arc-shaped; The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face includes the following steps: S01: Drill holes along the empty side behind the frame to the goaf; S02: Connect the first pipe body with the first tee, and connect the first hose, the second tee, and the second hose in sequence and place them in the first pipe body and the first tee, and make the second tee located at the first tee, insert the temperature measuring device from the outside into the first tee and connect it to the second tee, connect the other end of the second hose to the measuring nozzle, detect the concentration of gas and CO in the goaf through the detection equipment, and measure the temperature with the temperature measuring device; S03: When it is necessary to spray grout on the goaf, unplug the measuring nozzle, connect the spraying branch pipe to the second tee, and spray grout.

2. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: One end of the first pipe body away from the first tee is provided with a plurality of grouting holes.

3. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: It also includes a flame-retardant gauze, which is cylindrical and installed inside one end of the first tube body away from the first tee.

4. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: The diameter of the drill hole is greater than or equal to 30 mm, and the outer diameter of the first tube body is equal to the diameter of the drill hole.

5. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: The temperature measuring device is a thermometer.

6. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: It also includes a second tube body, one end of which is connected to the first tee. When measuring temperature and gas, the second hose is located in the second tube body. When sprinkling slurry, the other end of the second tube body is connected to the quick-connect valve, and the quick-connect valve is connected to the slurry sprinkling branch pipe.

7. The method for rapid temperature measurement and fire prevention and extinguishing of coal mining working face according to claim 1 is characterized in that: The specific steps of step S01 are: setting an observation point for every 10 frames on the working face of the ventilation area, using a pneumatic drill rig with a twist drill rod to drill holes at each observation point, with a hole diameter of at least 30 mm, opening a hole 0.5-1.5 m away from the roof along the empty side behind the frame, and drilling the hole vertically along the coal seam inclination to the goaf.

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