Modular fully enclosed intelligent monitoring method for spontaneous combustion in goaf

Abstract

The embodiment of the present application discloses a modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf, including injecting mud foam into the goaf to wrap the coal body; setting a template at a preset position of the tunnel, and configuring filling materials, injecting filling materials into the cavity of the template to form a closed wall to close the goaf; and setting a sensing system on the closed side of the goaf, the sensing system is used to monitor the temperature and gas of the goaf, and collect on-site images of the goaf. The present application is suitable for the occasion of rapid closure and intelligent monitoring of spontaneous combustion goaf.

Description

Technical Field

[0001] The present application relates to the field of coal mine fire control, and in particular to a method for modular fully enclosed intelligent monitoring of spontaneous combustion in goaf areas. Background Art

[0002] With the acceleration of mine mining speed and the expansion of mining area, the management of goaf and the prevention and control of spontaneous combustion are facing increasingly serious challenges. Goaf is the underground space formed after the underground coal seam is mined. These areas usually accumulate a large amount of loose floating coal. Since these floating coals are prone to spontaneous combustion in poorly ventilated and high oxygen environments, the risk of spontaneous combustion in goaf increases significantly. Once the coal body spontaneously ignites, it will seriously threaten the lives of miners and the normal production of the mine. In order to deal with spontaneous combustion in goaf, rapid and effective closure measures must be taken.

[0003] Traditional closed walls adopt the method of artificially constructing brick-concrete structures, which have problems such as backward technology and long construction period. The traditional closed wall must take into account the tunnel structure and adopt appropriate wall construction methods, which prolongs the sealing time and does not meet the needs of emergency rescue; the traditional closed wall has a large amount of solid material, low construction efficiency, poor top connection effect, and poor dynamic pressure resistance, and cannot achieve a good sealing effect. The filling materials prepared by traditional equipment have the phenomenon of uneven mixing; the traditional monitoring of goaf only analyzes the internal temperature and gas, and it is impossible to intuitively see the environmental conditions of the goaf behind the closed wall; the traditional monitoring of goaf gas and temperature only uses one analysis device, and the analysis results are prone to errors. Therefore, the existing research has deficiencies in the construction method of tunnel closed wall, construction efficiency, the wall effect of closed wall, the implementation of new wall building materials, the preparation of filling materials, and the monitoring of closed goaf. Summary of the invention

[0004] In view of this, the present application discloses a modular fully enclosed intelligent monitoring method for spontaneous combustion of goaf, which can significantly improve the sealing and monitoring effect of spontaneous combustion goaf. The technical solution adopted in the present application is as follows:

[0005] A modular, fully enclosed, intelligent method for monitoring spontaneous combustion of goafs, comprising: injecting mud foam into the goaf to wrap the coal body; setting a template at a preset position in the tunnel and configuring filling materials, injecting the filling materials into the cavity of the template to form a closed wall to seal the goaf; and setting a sensing system on the closed side of the goaf, the sensing system being used to monitor the temperature and gas of the goaf and collect on-site images of the goaf.

[0006] In a specific embodiment, the template is set at a preset position of the tunnel, including: opening a groove on the side wall of the preset position of the tunnel, and setting vertical steel bars at the bottom of the tunnel; installing a first plate and a second plate, with a spacing between the first plate and the second plate, and the steel bars are located between the first plate and the second plate, and the two ends of the first plate and the second plate are embedded in the groove; and a support frame is set between the first plate and the second plate, and the support frame is connected to the first plate and the second plate, respectively.

[0007] In a specific embodiment, the support frame includes a vertical rod, the vertical rod at least includes a first vertical rod, a second vertical rod, a third vertical rod, and a fourth vertical rod; the first vertical rod is vertically connected to the first plate body, and the second vertical rod is vertically connected to the second plate body; the third vertical rod is vertically connected to the first plate body, and the fourth vertical rod is vertically connected to the second plate body; a cross rod, two of the cross rods are connected between the first vertical rod and the second vertical rod to form a first frame, and two of the cross rods are connected between the third vertical rod and the fourth vertical rod to form a second frame; an oblique rod, two of the oblique rods are connected between the first vertical rod and the fourth vertical rod to form a third frame; wherein the first frame, the second frame, and the third frame are respectively provided with a mesh structure; a buckle, the buckle includes a first disk body, a second disk body, a connecting piece, and a hook body, the first disk body and the second disk body are respectively arranged on both sides of the first plate body or the second plate body and are detachably connected through the connecting piece, and the hook body is rotatably connected to the second disk body for connecting the vertical rod.

[0008] In a specific embodiment, the first plate body and / or the second plate body is a layered structure, and each layer of the plate body and another adjacent layer of the plate body are respectively provided with corresponding grooves and protrusions for mortise and tenon connection.

[0009] In a specific embodiment, the configuration of the filling material and the injection of the filling material into the cavity of the template to form a closed wall include: diverting a first material from a distribution rack to a stirring device and adding water for stirring to obtain a first filling material, wherein the first material comprises nano-silicon dioxide, silicate cement, silica fume, a water reducer, a accelerator, polypropylene fiber, a foaming agent, and expanded perlite; injecting the first filling material into the cavity of the template to form a first wall of the closed wall, wherein the first wall has a reserved spacing with the top of the tunnel; transporting a second material from the distribution rack to the stirring device and adding water for stirring to obtain a second filling material, wherein the second material comprises nano-silicon dioxide, a fluorine-containing copolymer, silicate cement, silica fume, a water reducer, a accelerator, polypropylene fiber, a foaming agent, and expanded perlite; injecting the second filling material into the cavity of the template and forming a second wall of the closed wall at the position of the reserved spacing, wherein the second wall is connected to the top of the tunnel.

[0010] In a specific embodiment, the material distribution rack is arranged above the stirring device, and the material distribution rack includes a main material distribution channel, the main material distribution channel is provided with a feed port and a plurality of material distribution ports, and a partition is provided in the main material distribution channel to evenly distribute the material to each of the material distribution ports; a lifting rod, the lifting rod is arranged at the bottom of the main material distribution channel to adjust the inclination angle of the main material distribution channel; an auxiliary material distribution channel, each of the material distribution ports is respectively connected to an auxiliary material distribution channel, and the auxiliary material distribution channel includes a fixed channel and a sliding channel respectively arranged obliquely, and one end of the fixed channel is provided with a feed port and is connected to the material distribution port. A first drop opening is provided at the other end of the fixed channel, and the sliding channel is slidably connected to the fixed channel so that one end of the sliding channel can be set below the first drop opening at a preset material distribution position, and a second drop opening is provided at the other end of the sliding channel; a material conveying device, which is arranged at the material distribution opening to transport the material from the main material distribution channel to the auxiliary material distribution channel; a material identification drop opening, which is arranged at the terminal of the main material distribution channel to prompt the reduction of the feed amount of the feed opening when the material overflows the partition in the main material distribution channel and flows into the material identification drop opening.

[0011] In a specific embodiment, the material distribution port at least includes a first material distribution port and a second material distribution port symmetrically arranged on both sides of the main material distribution channel, and a third material distribution port and a fourth material distribution port symmetrically arranged on both sides of the main material distribution channel; the partition includes at least a first partition, a second partition, and a third partition, the first partition and the second partition are respectively provided with a conical head and an arc-shaped tail, the arc-shaped tail of the first partition is blocked on the side of the first material distribution port, and the arc-shaped tail of the second partition is blocked on the side of the second material distribution port; the third partition is arranged downstream of the first partition and the second partition, the third partition is provided with a conical head and two arc-shaped tails, one of the arc-shaped tails of the third partition is blocked on the side of the third material distribution port, and the other arc-shaped tail of the third partition is blocked on the side of the fourth material distribution port.

[0012] In a specific embodiment, the stirring device includes a stirring chamber, the upper part of which is open to receive materials falling from the material distribution rack; an impeller stirrer, the impeller stirrer includes a first rotating shaft, and a plurality of impellers arranged on the rotating shaft, and the rotating shaft is rotatably connected to the stirring chamber; the impeller includes a first blade and a second blade arranged in an axial direction, a plurality of the first blades and a plurality of the second blades are staggered in a circumferential direction, the first blade and the second blade respectively have a preset inclination angle, and the first blade and the second blade are respectively a fan-shaped structure with a hollow body, the cross-section of the hollow body is gradually arranged along the rotation direction, and the cross-sectional profile of the hollow body is a parabola shape; a frame stirrer, the frame stirrer includes a second rotating shaft, a rectangular frame, a spiral ribbon, and a stirring rod, the second rotating shaft is rotatably connected to the stirring chamber, the second rotating shaft is coaxial with the first rotating shaft and rotates in opposite directions, both ends of the rectangular frame are connected to the second rotating shaft, the spiral ribbon is connected to the rectangular frame, the stirring rod is a tube body with two ends through, and the stirring rod is arranged at the connection position between the spiral ribbon and the rectangular frame.

[0013] In a specific embodiment, the sensing system includes a shell, which includes a ceramic inner tank and a metal outer shell, and the shell forms a accommodating cavity and is provided with an air inlet, a first air outlet, and a second air outlet, the first air outlet is used to connect a gas collection device; a first air pump, the first air pump is arranged in the accommodating cavity, and extracts gas from the lane through the air inlet; a filtering device, the filtering device includes a filter box and a spiral dust collector, the inner wall of the filter box is provided with a filter net, the filter box is provided with a vent, and the vent is connected with the first air outlet and the second air outlet; the spiral dust collector is arranged in the inner cavity of the filter box; the filtering device is configured as follows: the gas extracted from the lane by the first air pump enters the spiral dust collector through a pipeline and is filtered, and then is discharged from the spiral dust collector to the the inner cavity of the filter box, and then flows to the first air outlet and the second air outlet through the vent; a CO sensor, the CO sensor is connected to the vent of the filter box; a camera device, the camera device includes a glass cover and a camera, the glass cover is connected to the outer wall of the metal shell, and the glass cover is provided with a vent and a plurality of jets, the vent is connected to the second air outlet; the camera is arranged in the inner cavity of the glass cover; a second air pump, the second air pump is arranged in the accommodating cavity of the shell, the second air pump is respectively connected to the vent of the filter box and the vent of the glass cover, so as to pressurize the gas output from the vent of the filter box and then transport it to the vent of the glass cover; a temperature monitoring device, the temperature monitoring device is arranged in the accommodating cavity of the shell.

[0014] In a specific embodiment, the temperature monitoring device includes a first temperature monitoring component, the first temperature monitoring component includes an aluminum shell and a container, the container is arranged in the inner cavity of the aluminum shell, the container has a cover plate and a phase change material is loaded in the container, the volume of the phase change material can change with temperature, the cover plate is provided with a position sensor and a first elastic component, and the first elastic component is respectively connected to the cover plate and the aluminum shell, and the cover plate at least partially abuts against the phase change material; and / or a second temperature monitoring component, the second temperature monitoring component includes a base, a second elastic component, a lock column, a stud, and a temperature sensor; the stud includes a column and a guide spiral structure arranged on the outer wall of the column, the column is provided with a lock hole, and the temperature sensor is connected to the stud; the second elastic component and the lock column are arranged in the base, and the two ends of the second elastic component abut against the base and the first end of the lock column respectively; the second end of the lock column abuts against the column and can extend into the lock hole.

[0015] The embodiment of the present application discloses a modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf, including injecting mud foam into the goaf to wrap the coal body; setting a template at a preset position of the tunnel, and configuring filling materials, injecting filling materials into the cavity of the template to form a closed wall to close the goaf; and setting a sensing system on the closed side of the goaf, the sensing system is used to monitor the temperature and gas of the goaf, and collect the on-site image of the goaf. It can significantly improve the sealing and monitoring effect of the spontaneous combustion goaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the layout of a device used in a modular, fully enclosed, intelligent method for monitoring spontaneous combustion in goaf provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a template provided for an embodiment of the present application;

[0019] Figure 3 A schematic diagram of a stirring device and a material distribution rack provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a stirring device provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of a main material distribution channel and a secondary material distribution channel provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of a sensing system provided in an embodiment of the present application;

[0023] Figure 7 Schematic diagram of the closed wall filling material provided in the embodiment of the present application;

[0024] Figure 8 A diagram of the mechanism for preventing coal from re-igniting provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] Existing research has deficiencies in tunnel closed wall construction methods, construction efficiency, closed wall building effects, implementation of new wall building materials, preparation of filling materials, and closed goaf monitoring. To solve the above problems, the present application embodiment adopts the following technical solutions:

[0028] A modular, fully enclosed, intelligent method for monitoring spontaneous combustion in goafs comprises the following steps (see Figure 1 , 8 ):

[0029] Mud foam is injected into the goaf to encapsulate the coal body.

[0030] As oxygen can penetrate into the goaf, oxygen adsorption occurs on the surface of the coal, causing the temperature to rise and signs of spontaneous combustion of the coal begin to appear. Figure 8 As shown in the figure, coal absorbs oxygen so that oxygen molecules adhere to the surface of coal, and the oxidation reaction releases heat, further exacerbating the temperature rise. At this time, fire prevention and extinguishing measures should be taken immediately to close the goaf, isolate oxygen, and extinguish the spontaneous combustion of the coal body. The temperature of the goaf gradually drops to normal levels. Since the coal body is wrapped by fire extinguishing materials, the number of oxygen molecules decreases, and the active sites on the coal body are inhibited by the fire extinguishing materials. When adopting closed oxygen control measures, different degrees of oxygen deficiency may be formed inside the goaf. Due to the different degrees of oxygen deficiency, the spontaneous combustion characteristics of the coal body in the closed goaf will also be different. The deeper the oxygen deficiency, the fewer active sites on the coal body react with oxygen, and the more active sites will be retained; on the contrary, the shallower the oxygen deficiency, the more oxygen the coal body absorbs, the more active sites that react with oxygen, and the fewer active sites retained during the closure of the goaf. When the goaf meets the unsealing conditions and is unsealed, due to the normal ventilation of the mine, the oxygen level in the goaf will gradually recover, the coal body will be wrapped by oxygen and then absorb a large amount of oxygen, and its own active sites will change from the ground state to the excited state, reacting with oxygen. Since the coal body with a deeper oxygen deficiency retains a larger number of active sites, if the working face advances too slowly, the coal body with a deeper oxygen deficiency is more likely to reignite than the coal body with a shallower oxygen deficiency, and the re-ignition risk is higher, causing the temperature of the goaf to rise again, and the deeper the oxygen deficiency, the faster the heating rate of the coal body. Therefore, when extinguishing the spontaneous combustion of the coal body in the goaf, mud foam materials should be injected at the same time to wrap the coal body. After the goaf is unsealed, the coal body is blocked from fully absorbing oxygen, so that it will not reignite.

[0031] A template 1 is set at a preset position of the tunnel, and a filling material is provided. The filling material is injected into the cavity of the template 1 to form a closed wall to seal the goaf.

[0032] The use of template 1 splicing and filling ensures the continuity of construction, avoids interruptions and gaps in the construction process, and effectively ensures the integrity, density and structural stability of the closed wall; the use of template splicing also makes the construction process faster and reduces structural problems that may be caused by splicing errors.

[0033] A sensing system 4 is arranged on the closed side of the goaf, and the sensing system 4 is used to monitor the temperature and gas of the goaf and collect on-site images of the goaf.

[0034] While monitoring the temperature and gas in the goaf, the environmental conditions in the goaf are visually monitored through the image detection device, thereby improving the effect of goaf monitoring.

[0035] The embodiment of the present application discloses a modular, fully enclosed, intelligent method for monitoring spontaneous combustion of goafs, comprising: injecting mud foam into the goaf to wrap the coal body; setting a template at a preset position in the tunnel, and configuring filling materials, and injecting the filling materials into the cavity of the template to form a closed wall to seal the goaf; and setting a sensing system on the closed side of the goaf, the sensing system is used to monitor the temperature and gas of the goaf, and collect on-site images of the goaf; the sealing and monitoring effects of spontaneous combustion goafs can be significantly improved.

[0036] Optionally, in a specific embodiment, see Figure 1 , 2 , a template 1 is set at a preset position of the tunnel, including: a groove is opened on the side wall of the preset position of the tunnel, and vertical steel bars are set at the bottom of the tunnel; a first plate and a second plate are installed, there is a gap between the first plate and the second plate, and the vertical steel bars are located between the first plate and the second plate, and the two ends of the first plate and the second plate are embedded in the groove; a support frame 103 is set between the first plate and the second plate, and the support frame 103 is connected to the first plate and the second plate respectively. The vertical steel bars can increase the structural stability of the closed wall.

[0037] Optionally, in a specific embodiment, the support frame 103 includes a vertical rod 1033, the vertical rod 1033 includes a first vertical rod, a second vertical rod, a third vertical rod, and a fourth vertical rod; the first vertical rod is vertically connected to the first plate body, the second vertical rod is vertically connected to the second plate body; the third vertical rod is vertically connected to the first plate body, and the fourth vertical rod is vertically connected to the second plate body; a cross bar 1031, two cross bars 1031 are connected between the first vertical rod and the second vertical rod to form a first frame, and two cross bars 1031 are connected between the third vertical rod and the fourth vertical rod 1 to form a second frame; an oblique rod 1032, two oblique rods 1032 are connected between the first vertical rod and the fourth vertical rod to form a third frame; wherein the first frame, the second frame and the third frame are respectively provided with a mesh structure 1034; the buckle 102 comprises a first plate body, a second plate body, a connecting piece 1022, and a hook body 1021, the first plate body and the second plate body are respectively arranged on both sides of the first plate body or the second plate body and are detachably connected through the connecting piece 1022, and the hook body 1021 is rotatably connected to the second plate body for connecting the vertical rod 1033.

[0038] When filling material is injected into the formwork 1, the material will produce an outward expansion effect on the formwork on both sides. The cross bar 1031 can generate an internal tension force to offset the outward expansion effect. Compared with the traditional method of using tension anchor rods, the cross bar 1031 plays an internal tension role in the structure, directly offsetting the outward expansion force, simplifying the construction process, and reducing the complexity and time cost of the construction process.

[0039] Optionally, in a specific embodiment, the first plate body and / or the second plate body is a layered structure, and each layer of the plate body and another adjacent layer of the plate body are respectively provided with corresponding grooves 1013 and protrusions 1012 for mortise and tenon connection.

[0040] Optionally, in a specific embodiment, a filling material is configured and injected into the cavity of the template 1 to form a closed wall, including: transferring the first material from the material distribution rack 3 to the stirring device 2 and adding water to stir to obtain the first filling material (see Figure 7 ), the first material includes nano silicon dioxide, silicate cement, silica fume, water reducing agent, accelerator, polypropylene fiber, foaming agent, and expanded perlite; the first filling material is injected into the cavity of the template 1 to form a first wall of a closed wall, and a reserved spacing is provided between the first wall and the top of the tunnel, which is 0.3 of the height of the closed wall; the second material is transported from the distribution rack 3 to the stirring device 2 and stirred with water to obtain a second filling material, the second material includes nano silicon dioxide, fluorine-containing copolymer, silicate cement, silica fume, water reducing agent, accelerator, polypropylene fiber, foaming agent, and expanded perlite; the second filling material is injected into the cavity of the template 1, and a second wall of a closed wall is formed at the position of the reserved spacing, and the second wall is connected to the top of the tunnel.

[0041] In order to ensure that the enclosed wall is fully connected to the top, the second filling material used in the second wall has good expansion properties, and the height of the second wall should also be selected reasonably; due to expansion, the density of the second filling material will be smaller than that of the first filling material, so if the height of the second wall is too large, the overall performance of the enclosed wall will be affected; if the height of the second wall is too small, it cannot be well connected to the top, leaving a gap between the top of the enclosed wall and the tunnel. Expanded perlite is fire-resistant, so it also makes the enclosed wall fire-resistant; nano-silicon dioxide is a nano-scale material with a large specific surface area and a strong hanging hole effect, so it can increase the airtightness of the enclosed wall; fluorine-containing copolymers and nano-silicon dioxide can increase the stability of the foam, so that the enclosed wall can be fully connected to the top and increase the airtightness of the enclosed wall.

[0042] Optionally, in a specific embodiment, see Figure 3 , Figure 5 The material distribution rack 3 is arranged above the stirring device 2, and the material distribution rack 3 includes a main material distribution channel 301 and an auxiliary material distribution channel 302. The main material distribution channel 301 is provided with a feed port 3011 and a plurality of material distribution ports. A partition is provided in the main material distribution channel 301 to evenly distribute the material to each material distribution port; a lifting rod 303, and the lifting rod 303 is arranged at the bottom of the main material distribution channel 301 to adjust the inclination angle of the main material distribution channel 301; each material distribution port is respectively connected to a secondary material distribution channel 302, and the auxiliary material distribution channel 302 includes a fixed channel and a sliding channel respectively arranged obliquely, one end of the fixed channel is provided with a feed port and is connected to the material distribution port, and the other end of the fixed channel is provided with a first drop port 3023, the sliding channel is slidably connected to the fixed channel so that one end of the sliding channel can be set below the first drop port 3023 at a preset material distribution position, and the other end of the sliding channel is provided with a second drop port 3022; the feeding device 3014, the feeding device 3014 is set at the material distribution port and is connected to the feeding motor 3016 to transport the material from the main material distribution channel 301 to the auxiliary material distribution channel 302; the material identification drop port 3015, the material identification drop port 3015 is set at the terminal of the main material distribution channel 301, so as to prompt to reduce the feed amount of the feed port 3011 when the material overflows the partition in the main material distribution channel 301 and flows into the material identification drop port 3015.

[0043] Optionally, an arc-shaped horizontally extended base support 3024 is provided at one end of the sliding channel, and a second material drop port 3022 and a material control push-pull rod 3021 are provided at the other end. The arc-shaped horizontally extended base support 3024 is connected to the material control push-pull rod 3021, and the material control push-pull rod 3021 facilitates pushing and pulling the arc-shaped horizontally extended base support 3024; the arc-shaped horizontally extended base support 3024 can be set below the first material drop port 3023 at a preset material distribution position to receive material from the first material drop port 3023, so that the material control push-pull rod 3021 can control the material drop amount of the first material drop port 3023 and the second material drop port 3022 by pulling the arc-shaped horizontally extended base support 3024, so that the material drop amount of the first material drop port 3023 and the second material drop port 3022 are the same, thereby making the material entering the stirring device 2 evenly distributed.

[0044] The material conveying device 3014 and the material conveying motor 3016 ensure the smooth transmission of the materials.

[0045] Optionally, in a specific embodiment, see Figure 5 The material distribution openings include a first material distribution opening and a second material distribution opening symmetrically arranged on both sides of the main material distribution channel 301, and a third material distribution opening and a fourth material distribution opening symmetrically arranged on both sides of the main material distribution channel 301; the partition includes a first partition, a second partition, and a third partition, the first partition and the second partition are respectively provided with a conical head and an arc-shaped tail, the arc-shaped tail of the first partition blocks the side of the first material distribution opening, and the arc-shaped tail of the second partition blocks the side of the second material distribution opening; the third partition is arranged downstream of the first partition and the second partition, the third partition has a conical head 3013 and two arc-shaped tails 3012, one of the arc-shaped tails 3012 of the third partition blocks the side of the third material distribution opening, and the other arc-shaped tail 3012 of the third partition blocks the side of the fourth material distribution opening.

[0046] Optionally, assuming that the internal width of the main material distribution channel 301 is L, a first partition and a second partition are respectively set at the entrance end of the main material distribution channel 301 at a distance of L / 4 on both sides of the main material distribution channel 301, and a third partition is set at the middle position of the rear end of the main material distribution channel 301, that is, at L / 2; in the main material distribution channel 301, the filling material is divided into four equal parts, so that the filling material can be discharged more evenly.

[0047] Optionally, in a specific embodiment, see Figure 3 , Figure 4, the stirring device 2 includes a stirring chamber 2036, the upper part of the stirring chamber 2036 is open for receiving materials falling from the material distribution rack 3; in some embodiments, the stirring device 2 may include a fixed frame 2031, the stirring chamber 2036 is installed on the fixed frame 2031, the bottom of the stirring chamber 2036 is provided with an inclined discharge port 2032, transmission components 2033 are provided at both ends of the stirring chamber 2036, an explosion-proof motor 2034 is installed on the fixed frame 2031 below the transmission component 2033, and the explosion-proof motor 2034 is connected to the transmission component 2033 in transmission connection; an impeller agitator 202, the impeller agitator 202 includes a first rotating shaft 2021, and a plurality of impellers arranged on the first rotating shaft 2021, the first rotating shaft 2021 is rotatably connected to the stirring chamber 2036; the impeller includes a first blade and a second blade arranged in an axial direction, and the plurality of first blades and the plurality of second blades are staggered in a circumferential direction. Preferably, the impeller can be provided with three first blades, three The second blade, the first blade and the second blade each have a preset inclination angle, which is preferably 20° to 25°; and the first blade and the second blade are respectively a fan-shaped structure 2022 with a hollow body, the cross section of the hollow body is gradually set along the rotation direction (the cross-sectional width of the hollow body can be gradually reduced from four-fifths of the blade width to one-fifth of the blade width), and the cross-sectional profile of the hollow body is a parabola shape; the frame stirrer 201, the frame stirrer 201 includes a second rotating shaft 2014 , a rectangular frame 2011, a screw ribbon 2013, and a stirring rod 2012. The second rotating shaft 2014 is rotatably connected to the stirring chamber 2036. The second rotating shaft 2014 is coaxial with the first rotating shaft 2021 and rotates in opposite directions. Both ends of the rectangular frame 2011 are connected to the second rotating shaft 2014. The screw ribbon 2013 is connected to the rectangular frame 2011. The stirring rod 2012 is a tube body with both ends passing through. The stirring rod 2012 is arranged at the connecting position of the screw ribbon 2013 and the rectangular frame 2011.

[0048] Optionally, the first rotating shaft 2021 and the second rotating shaft 2014 are arranged to rotate in opposite directions, so that the material is subjected to bidirectional forces during the mixing process, effectively reducing the mixing dead angle and enhancing the mixing efficiency.

[0049] Optionally, a multi-peak wavy structure 2035 is provided in the stirring chamber 2036; the multi-peak wavy structure 2035 can increase the contact area between the material and the front side wall and the rear side wall of the stirring chamber 2036, making the material more dispersed and more uniform after stirring.

[0050] Optionally, in a specific embodiment, see Figure 6The sensing system 4 includes a shell, which includes a ceramic liner 4012 and a metal shell 4011, and the shell forms a receiving cavity, and is provided with an air inlet 4015, a first air outlet, and a second air outlet, which can be configured with a pipeline for communication, and the first air outlet is used to connect the gas collection device; the air inlet 4015 is provided with an air filter 4016; the first air pump 4013 is arranged in the receiving cavity, and the gas is extracted from the lane through the air inlet 4015; the filtering device, the filtering device includes a filter box 40 22. A spiral dust collector 4021, a filter screen is provided on the inner wall of the filter box 4022, and the filter box 4022 is provided with a vent, which is connected to the first air outlet and the second air outlet; the spiral dust collector 4021 is arranged in the inner cavity of the filter box 4022; the filtering device is configured as follows: the gas extracted from the lane by the first air pump 4013 enters the spiral dust collector 4021 through a pipeline and is filtered, and then is discharged from the spiral dust collector 4021 to the inner cavity of the filter box 4022, and then flows to the first air outlet, the second air outlet through the vent. a second air outlet; a CO sensor 403, the CO sensor 403 is connected to the ventilation part of the filter box 4022; a camera device 404, the camera device 404 includes a glass cover 4043 and a camera 4042, the glass cover 4043 is connected to the outer wall of the metal shell 4011, and the glass cover 4043 is provided with a vent and a plurality of jets 4041, the vent is connected to the second air outlet; the camera 4042 is arranged in the inner cavity of the glass cover 4043; a second air pump 4014, the second air pump 401 4 is arranged in the accommodating cavity of the shell, and the second air pump 4014 is respectively connected with the ventilation part of the filter box 4022 and the ventilation port of the glass cover 4043, so as to pressurize the gas output from the ventilation part of the filter box 4022 and then transport it to the ventilation port of the glass cover 4043; wherein, the glass cover can be arranged in a trapezoidal shape, and a total of 6 air jets 4041 are arranged, which are evenly distributed on the other three surfaces except the bottom surface of the trapezoidal shape, so that the glass cover can be cleaned at multiple angles; a temperature monitoring device, which is arranged in the accommodating cavity of the shell.

[0051] Under the suction action of the first air pump 4013, the air in the goaf is filtered through the air filter 4016 and then enters the air inlet 4015, and then enters the spiral dust collector 4021 along the air inlet pipe for primary filtration. After that, the gas is filtered from the inner cavity of the filter box 4022 of the spiral dust collector 4021, and then filtered for a second time from the filter net on the inner wall of the filter box 4022. The filter net can be a polypropylene melt-blown filter net; the gas after multiple filtrations effectively removes dust impurities contained in the gas, thereby effectively improving the accuracy of gas monitoring.

[0052] Optionally, in a specific embodiment, see Figure 6The temperature monitoring device includes a first temperature monitoring component 405, the first temperature monitoring component 405 includes an aluminum shell 4051 and a container, the container is arranged in the inner cavity of the aluminum shell 4051, the container has a cover plate 4053 and a phase change material is loaded in the container, the volume of the phase change material can change with the temperature, the cover plate 4053 is provided with a position sensor 4052 and a first elastic member 4054, and the first elastic member 4054 is respectively connected to the cover plate 4053 and the aluminum shell 4051, the cover plate 4053 at least partially abuts against the phase change material, and the cover plate 4053 can be a rubber cover plate; for example, the phase change material can use calcium chloride hexahydrate, and its phase change temperature is 29 ℃, when calcium chloride hexahydrate reaches the phase transition temperature and undergoes phase transition, its volume will change, and calcium chloride hexahydrate will drive the cover plate 4053 to move. The displacement signal caused by the temperature change is transmitted to relevant personnel through the position sensor 4052, so as to realize the monitoring of the fixed temperature value; the cover plate 4053 is also connected to the first elastic member 4054 to prevent the position change caused by non-volume change reasons from affecting the judgment of personnel.

[0053] The second temperature monitoring component includes a base 406, a second elastic component 4064, a locking column 4063, a stud 4062, and a temperature sensor 4061; the stud 4062 includes a column and a guide spiral structure arranged on the outer wall of the column, the column is provided with a locking hole, and the temperature sensor 4061 is connected to the stud 4062; the second elastic component 4064 and the locking column 4063 are arranged in the base 406, and the two ends of the second elastic component 4064 are respectively abutted against the first ends of the base 406 and the locking column 4063; the second end of the locking column 4063 is abutted against the column and can be extended into the locking hole; the working process of extending into the locking hole is that when the stud 4062 rotates downward, the locking column 4063 will first slide on the surface of the stud 4062, and it is not locked at this time. When the locking column 4063 is slid to the locking hole, under the action of the second elastic component 4064, the locking column 4063 pops into the locking hole.

[0054] The present invention illustrates the detailed method of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed method, that is, it does not mean that the present invention must rely on the above-mentioned detailed method to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A modular, fully enclosed, intelligent method for monitoring spontaneous combustion in goaf, characterized in that: include: Inject mud foam into the goaf to encapsulate the coal body; A template is set at a preset position of the tunnel, and a filling material is configured, and the filling material is injected into the cavity of the template to form a closed wall to close the goaf; and a sensing system is set on the closed side of the goaf, and the sensing system is used to monitor the temperature and gas of the goaf and collect on-site images of the goaf; The configuration of the filling material, and the injection of the filling material into the cavity of the template to form a closed wall, includes: transferring the first material from the material distribution rack to the stirring device and adding water to stir to obtain the first filling material; injecting the first filling material into the cavity of the template to form the first wall of the closed wall, and the first wall has a reserved spacing with the top of the tunnel; transferring the second material from the material distribution rack to the stirring device and adding water to stir to obtain the second filling material; injecting the second filling material into the cavity of the template, and forming the second wall of the closed wall at the position of the reserved spacing, and the second wall is connected to the top of the tunnel; The material distribution rack is arranged above the stirring device, and the material distribution rack comprises: a main material distribution channel, the main material distribution channel is provided with a feed port and a plurality of material distribution ports, a partition is provided in the main material distribution channel to evenly distribute the material to each of the material distribution ports; a lifting rod, the lifting rod is arranged at the bottom of the main material distribution channel to adjust the inclination angle of the main material distribution channel; an auxiliary material distribution channel, each of the material distribution ports is respectively connected with an auxiliary material distribution channel, the auxiliary material distribution channel comprises a fixed channel and a sliding channel respectively arranged obliquely, one end of the fixed channel is provided with a feed port and is connected to the material distribution port, the fixed channel A first drop opening is provided at the other end of the material distribution channel, and the sliding channel is slidably connected to the fixed channel so that one end of the sliding channel can be set below the first drop opening at a preset material distribution position, and a second drop opening is provided at the other end of the sliding channel; a material conveying device, which is arranged at the material distribution opening to transport the material from the main material distribution channel to the auxiliary material distribution channel; a material discrimination drop opening, which is arranged at the terminal of the main material distribution channel to prompt the reduction of the feed amount of the feed opening when the material overflows the partition in the main material distribution channel and flows into the material discrimination drop opening.

2. The modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf according to claim 1 is characterized in that: The step of setting a template at a preset position in the lane comprises: A trough is provided on the side wall of the tunnel at a preset position, and vertical steel bars are arranged at the bottom of the tunnel; Install a first plate body and a second plate body, wherein there is a distance between the first plate body and the second plate body, and the steel bar is located between the first plate body and the second plate body, and both ends of the first plate body and the second plate body are embedded in the groove body; A support frame is arranged between the first plate body and the second plate body, and the support frame is connected to the first plate body and the second plate body respectively.

3. The modular fully enclosed intelligent method for monitoring spontaneous combustion in goaf according to claim 2 is characterized in that: The support frame comprises: Vertical rods, the vertical rods at least include a first vertical rod, a second vertical rod, a third vertical rod, and a fourth vertical rod; the first vertical rod is vertically connected to the first plate body, the second vertical rod is vertically connected to the second plate body; the third vertical rod is vertically connected to the first plate body, and the fourth vertical rod is vertically connected to the second plate body; A cross bar, wherein two of the cross bars are connected between the first vertical bar and the second vertical bar to form a first frame, and two of the cross bars are connected between the third vertical bar and the fourth vertical bar to form a second frame; An oblique rod, wherein two of the oblique rods are connected between the first vertical rod and the fourth vertical rod to form a third frame; wherein the first frame, the second frame and the third frame are respectively provided with a mesh structure; The buckle includes a first plate, a second plate, a connecting piece, and a hook. The first plate and the second plate are respectively arranged on both sides of the first plate or the second plate and are detachably connected through the connecting piece. The hook is rotatably connected to the second plate for connecting the vertical rod.

4. The modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf according to claim 2 is characterized in that: The first plate body and / or the second plate body is a layered structure, and each layer of the plate body and another adjacent layer of the plate body are respectively provided with corresponding grooves and protrusions for mortise and tenon connection.

5. The modular fully enclosed intelligent method for monitoring spontaneous combustion in goaf according to claim 2 is characterized in that: The step of configuring the filling material and injecting the filling material into the cavity of the template to form a closed wall includes: The first material is transported from the material distribution rack to the stirring device and water is added for stirring to obtain a first filling material, wherein the first material comprises nano silicon dioxide, silicate cement, silica fume, water reducing agent, accelerating setting agent, polypropylene fiber, foaming agent and expanded perlite; Injecting the first filling material into the cavity of the template to form a first wall of the closed wall, wherein a reserved gap exists between the first wall and the top of the tunnel; The second material is transported from the material distribution rack to the stirring device and water is added for stirring to obtain a second filling material, wherein the second material comprises nano silicon dioxide, fluorine-containing copolymer, silicate cement, silica fume, water reducing agent, accelerating setting agent, polypropylene fiber, foaming agent and expanded perlite; The second filling material is injected into the cavity of the template to form a second wall body of the closed wall at the position of the reserved spacing, and the second wall body is connected to the top of the tunnel.

6. The modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf according to claim 1 is characterized in that: The material distribution openings at least include a first material distribution opening and a second material distribution opening symmetrically arranged on both sides of the main material distribution channel, and a third material distribution opening and a fourth material distribution opening symmetrically arranged on both sides of the main material distribution channel; The partition at least includes a first partition, a second partition, and a third partition, wherein the first partition and the second partition are respectively provided with a conical head and an arc-shaped tail, wherein the arc-shaped tail of the first partition is shielded at the side of the first material distribution opening, and the arc-shaped tail of the second partition is shielded at the side of the second material distribution opening; The third partition is arranged downstream of the first partition and the second partition. The third partition is provided with a conical head and two arc-shaped tails. One of the arc-shaped tails of the third partition blocks the side of the third material distribution port, and the other arc-shaped tail of the third partition blocks the side of the fourth material distribution port.

7. The modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf according to claim 1 is characterized in that: The stirring device comprises: A stirring chamber, the upper portion of which is open to receive materials dropped from the material distribution rack; An impeller agitator, the impeller agitator comprising a first rotating shaft and a plurality of impellers arranged on the rotating shaft, the rotating shaft being rotatably connected to the stirring chamber; the impeller comprising a first blade and a second blade arranged in an axial direction, a plurality of the first blades and a plurality of the second blades being staggered in a circumferential direction, the first blade and the second blade respectively having a preset inclination angle, and the first blade and the second blade respectively being a fan-shaped structure having a hollow body, the cross section of the hollow body being gradually arranged in a rotation direction, and the cross-sectional profile of the hollow body being a parabola; A frame-type agitator, the frame-type agitator includes a second rotating shaft, a rectangular frame, a spiral ribbon, and a stirring rod, the second rotating shaft is rotatably connected to the stirring chamber, the second rotating shaft is coaxial with the first rotating shaft and rotates in opposite directions, both ends of the rectangular frame are connected to the second rotating shaft, the spiral ribbon is connected to the rectangular frame, the stirring rod is a tube with both ends passing through, and the stirring rod is arranged at the connecting position of the spiral ribbon and the rectangular frame.

8. The modular fully enclosed intelligent method for monitoring spontaneous combustion of goaf according to claim 1 is characterized in that: The sensing system comprises: A shell, the shell comprising a ceramic liner and a metal shell, and the shell forms a containing cavity and is provided with an air inlet, a first air outlet, and a second air outlet, wherein the first air outlet is used to connect a gas collection device; a first air pump, the first air pump being disposed in the accommodating chamber and extracting gas from the lane through the air inlet; A filter device, the filter device comprising a filter box and a spiral dust collector, the inner wall of the filter box is provided with a filter screen, the filter box is provided with a vent, the vent is connected with the first air outlet and the second air outlet; the spiral dust collector is arranged in the inner cavity of the filter box; the filter device is configured as follows: the gas extracted from the lane by the first air pump enters the spiral dust collector through a pipeline and is filtered, and then is discharged from the spiral dust collector to the inner cavity of the filter box, and then flows to the first air outlet and the second air outlet through the vent; A CO sensor, wherein the CO sensor is connected to a ventilating portion of the filter box; A camera device, the camera device comprising a glass cover and a camera, the glass cover is connected to the outer wall of the metal shell, and the glass cover is provided with an air vent and a plurality of air jets, the air vent is connected to the second air outlet; the camera is arranged in the inner cavity of the glass cover; a second air pump, the second air pump being arranged in the accommodating cavity of the housing, and the second air pump being respectively connected with the vent portion of the filter box and the vent port of the glass cover, so as to pressurize the gas outputted from the vent portion of the filter box and then transport the gas to the vent port of the glass cover; A temperature monitoring device is arranged in the accommodating cavity of the shell.

9. The modular fully enclosed intelligent method for monitoring spontaneous combustion in goaf according to claim 8 is characterized in that: The temperature monitoring device comprises: a first temperature monitoring component, the first temperature monitoring component comprising an aluminum shell and a container, the container being arranged in an inner cavity of the aluminum shell, the container having a cover plate and loaded with a phase change material, the volume of the phase change material being able to change with temperature, the cover plate being provided with a position sensor and a first elastic component, and the first elastic component being respectively connected to the cover plate and the aluminum shell, and the cover plate at least partially abutting against the phase change material; and / or A second temperature monitoring component, the second temperature monitoring component includes a base, a second elastic component, a locking column, a stud, and a temperature sensor; the stud includes a column and a guide spiral structure arranged on the outer wall of the column, the column is provided with a locking hole, and the temperature sensor is connected to the stud; the second elastic component and the locking column are arranged in the base, and the two ends of the second elastic component are respectively abutted against the base and the first end of the locking column; the second end of the locking column abuts against the column and can extend into the locking hole.

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