A safe layout structure and method for a widened fire-fighting material warehouse

Abstract

The invention relates to a safety structure of a fire-fighting chamber in a mine, and in particular to a safety arrangement structure and method for a widened fire-fighting material warehouse; surrounding rock on one side of a bottom plate of a material room to be set up as a fire-fighting material warehouse is left to form a cube, and the upper end surface of the cube is plastered to serve as a material storage platform; a fire-fighting door structure consisting of a double-convex tunnel, a double-groove hanging way, and a fire-fighting door is arranged above the outer side of the material storage platform, and the double-groove hanging way is suspended on the top plate of the material room by a lifting anchor rod, and fire-fighting materials are divided into multiple categories and stacked on the material storage platform in turn, and partition boards are used to separate the various types of fire-fighting materials; the invention solves the problems of difficult safety management, poor stability of partition walls and storage platforms, large engineering quantity and investment, etc. in the current widened fire-fighting material warehouse, and has the characteristics of easy safety management of the material room, high structural stability, and low engineering quantity.

Description

Technical Field

[0001] The invention relates to a safety structure of a mine fire fighting chamber, in particular to a safety arrangement structure and method of a widened fire fighting material storehouse. Background Art

[0002] Each production level of the mine requires a fire-fighting material warehouse to be set up in the main transportation tunnel near the bottom of the mine to store various fire-fighting materials so that emergency rescue can be carried out quickly and effectively when a fire occurs underground. At present, the layout of underground fire-fighting material warehouses mainly includes chamber type and widened type. The chamber type fire-fighting material warehouse requires a separate material room, which has higher emergency safety, but the excavation engineering and investment are large, and it is mostly used in large mines with coal seams that tend to spontaneously combust; the widened fire-fighting material warehouse only needs to transform a section of the transportation tunnel, and the excavation engineering and investment are relatively small, and it is mostly used in coal seams that are not prone to spontaneous combustion or small and medium-sized mines.

[0003] There are two main ways to widen and reconstruct the widened fire-fighting material warehouse in the project: new excavation and brush expansion. For newly constructed transport lanes, the width of the material storage platform can be taken into account in advance in the lane width, and the new excavation and widening lane method can be adopted; for existing transport lanes, when the lane width does not meet the width of the newly added material storage platform, the brush expansion and widening lane method is adopted. Both methods are to widen and reconstruct the lane of the material room to the bottom plate, and then set up a platform to store fire-fighting materials. The material storage platform is mostly made of reinforced concrete slabs, and the lower part of the platform is supported by bricks or stone columns. Both methods do not fully utilize the structural advantages of the material storage platform, which not only increases the excavation work of the material room, but also increases the material consumption of the material storage platform and its support body; at the same time, when heavier fire-fighting materials such as cement, sand and gravel are stored on the platform, the platform may be deformed, or the platform may collapse due to poor support setting, that is, the stability of the material storage platform is poor.

[0004] Since the emergency fire fighting function of the widened fire fighting material warehouse and the transportation function of the transport lane share a lane, the management of the material room lane is difficult. Improper management will affect the fire safety of the mine and the lane transportation. At present, in the material room of the widened fire fighting material warehouse, there is often a separation wall between the material storage table and the fire fighting mine car to enclose the fire fighting materials. The separation wall is mostly composed of columns, partitions, and fence doors. The top of the column is suspended and inserted into the bottom of the material room for fixation. The fence door needs to be opened outward. Since the material room is located in the main transportation lane, the flow of personnel and material transportation are relatively frequent. The separation wall is occasionally touched by personnel or scratched by transported materials, and the columns often become loose or collapse, that is, the stability of the separation wall is poor. The looseness or collapse of the separation wall not only affects the flow of personnel and material transportation management in this section of the lane, but also affects the normal outward opening of the fence door in the separation wall. Once a fire occurs and rescue is required, the fence door may not be opened smoothly, which poses a great safety hazard.

[0005] The existing patent CN202493288U discloses a semicircular chamber-type underground fire-fighting material warehouse structure, which is characterized by: the main shaft is connected to the main shaft bypass and the underground fire-fighting material warehouse in sequence, the overall direction of the underground fire-fighting material warehouse is semicircular, and the other end of the underground fire-fighting material warehouse is connected to the auxiliary shaft bottom parking lot laneway connected to it. This patented technology is only a layout structure form of the chamber-type fire-fighting material warehouse, and there are problems such as large excavation engineering volume and platform consumables in the material room, and it cannot guide the safe layout of the widened material room. At present, there is no effective technical solution for the safety structure of the widened fire-fighting material warehouse in the existing literature at home and abroad. Summary of the invention

[0006] The present invention overcomes the shortcomings of the prior art and proposes a safety layout structure and method for a widened fire-fighting material warehouse, which solves the problems of difficult safety management, poor stability of partition walls and storage platforms, large engineering workload and investment in current widened fire-fighting material warehouses underground.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0008] A widened fire-fighting material warehouse safety layout structure comprises a material room arranged in an underground transport tunnel; a cube is left in the surrounding rock on one side of the material room bottom plate as a material storage platform; a fire door structure is arranged above the outer side of the material storage platform; the fire door structure comprises a double-convex tunnel, a double-groove hanging way and a fire door, the double-track center line of the double-convex tunnel and the double-groove center line of the double-groove hanging way are overlapped in the vertical direction, the double-convex tunnel is arranged on the material storage platform surface through the length, and the double-groove hanging way is suspended on the top plate of the material room by a lifting anchor rod; the fire door comprises an inner fire door and an outer fire door, and the inner fire door and the outer fire door are alternately arranged vertically between the double-convex tunnel and the double-groove hanging way.

[0009] Furthermore, steel risers are provided at the center line of the double-convex tunnels at both end faces of the cube, and the steel risers at both ends are fixed to the two end heads of the double-convex tunnels and the double-groove suspension channels. Metal fences are provided between the material room tunnel wall and the steel risers above the two end faces of the cube.

[0010] Furthermore, the lifting anchor rod is arranged in the top plate of the material room just above the center line of the double-groove hoistway, and the arrangement spacing is 3m~5m; the lifting anchor rod is provided with an exposed section, and the exposed sections of the lifting anchor rods at both ends of the material room are inserted into the top tube of the steel riser, and the exposed section ends of the lifting anchor rods in the middle area of ​​the material room are fixed on the double-groove hoistway.

[0011] Furthermore, the lower part of the steel riser is fixed to the end face of the cube by using U-bolts, the bottom end of the steel riser is placed on the bottom plate of the transport tunnel, and the top end of the steel riser is close to the tray of the lifting anchor rod.

[0012] Furthermore, the upper end surface of the cube is plastered with mortar and used as a material storage table, and the surface of the material storage table is provided with a plurality of partition boards.

[0013] Furthermore, the length of the material room is ≥20m, the width of the material storage table is 0.8m~1.2m, the height is 0.5m~1.0m, and the spacing between partition boards is ≥3m.

[0014] Furthermore, the lengths of the double-convex tunnel and the double-groove hanging tunnel are equal to the length of the material storage platform, and the width of the center line of the double-convex tunnel from the outer edge of the material storage platform is 0.2m~0.4m.

[0015] Furthermore, pulleys are provided at the lower ends of the inner fire door and the outer fire door, hanging wheels are provided at the upper ends, and locks are provided at the left and right ends; the pulleys are arranged on the double-convex tunnels, the hanging wheels are arranged in the double-groove hanging tunnels, and the inner fire door and the outer fire door are fixed by locks.

[0016] The arrangement method of the widened fire-fighting material warehouse safety arrangement structure comprises the following steps:

[0017] S1. During excavation, the surrounding rock on one side of the floor of the material room to be used as a fire material warehouse is first left to form a cube, and the upper end of the cube is plastered to serve as a material storage platform;

[0018] S2. Then install the fire door structure above the outer side of the material storage platform, wherein the double convex tunnel is installed on the material storage platform surface, the double groove hanging channel is suspended on the top plate of the material room by a lifting anchor rod, and the inner fire door and the outer fire door are vertically installed alternately between the double convex tunnel and the double groove hanging channel;

[0019] S3. Before stacking firefighting materials, equip several firefighting mining trucks in the material room, and then divide the firefighting materials into multiple categories and stack them on the material storage table in sequence. Different types of firefighting materials are separated by partition boards. After stacking, close the firefighting door and seal the firefighting materials on the material storage table;

[0020] S4. When using a certain type of fire-fighting material, first open the fire-fighting door at the corresponding position of the fire-fighting material, move the fire-fighting material into the fire-fighting mine truck, and then transport it to the underground fire-fighting location for fire safety disposal.

[0021] Furthermore, after installing the inner fire door and the outer fire door, steel risers and metal fences are installed on both end surfaces of the cube.

[0022] The beneficial effects of the present invention compared with the prior art are as follows:

[0023] (1) The safety arrangement structure and method provided by the present invention innovatively leaves the surrounding rock on one side of the bottom plate of the material room of the fire-fighting material warehouse in the form of a cube, breaking the conventional method of widening and transforming the tunnel to the bottom plate, reducing the amount of excavation work for transforming the tunnel, and at the same time, the reserved cube is directly used as a material storage table after being plastered, which not only eliminates the material storage table plate and its supporting material, but also ensures the stability of the material storage table.

[0024] (2) The safety arrangement structure and method provided by the present invention innovatively adopt a fire door structure consisting of a double-convex tunnel, a double-groove hanging road, and a fire door. The fire doors are vertically installed alternately between the double-convex tunnel and the double-groove hanging road, eliminating the separation wall set in the conventional widened fire material warehouse. The stability of the fire door structure is much higher than that of the separation wall. At the same time, the fire door has a separate running track and is opened and closed by bidirectional sliding. Compared with the conventional outward-opening fence door, opening the fire door does not occupy the tunnel space. The fire door structure does not affect the flow of people and material transportation in the material room section tunnel at all under normal circumstances, and safety management is relatively easy.

[0025] (3) The safety arrangement structure provided by the present invention has a fire door structure on the upper side of the material storage table and metal fences on the upper side of both end surfaces of the table, which can completely enclose the fire-fighting materials. Compared with the conventional semi-enclosed separation walls, mobile personnel cannot touch the fire-fighting materials, which will not be lost and is also beneficial to the safety management of the material room section tunnel.

[0026] (4) The safety arrangement structure provided by the present invention has a steel riser that is fixed closely to the end faces of the cube and to the two ends of the double-convex tunnel and the double-groove hanging way, with the bottom end placed on the bottom plate of the transport tunnel and the top being inserted by the exposed section of the lifting anchor rod. The two steel risers play a role in stabilizing the fire door structure, thereby improving the stability of the fire door structure.

[0027] (5) The safety layout structure and method provided by the present invention use partition boards to separate various types of fire-fighting materials. The partition boards can be reasonably moved and set according to the occupied space of various types of fire-fighting materials, which is convenient for the classification and management of fire-fighting materials. The lifting anchor rod is provided with an exposed section, which can be used to hang and fix the double-slot hanging way, and can also be inserted into the top tube of the steel riser to fix the steel riser. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the plan layout of the safety structure of the widened fire-fighting material warehouse of the present invention;

[0029] Figure 2 It is a schematic diagram of the cross-section arrangement of the safety structure described in the embodiment;

[0030] Figure 3 It is a schematic diagram of a middle section of the safety structure described in the embodiment;

[0031] Figure 4It is a schematic cross-sectional view of both ends of the safety structure described in the embodiment;

[0032] Figure 5 This is a schematic diagram of the fire door connection described in the embodiment;

[0033] Figure 6 It is a schematic diagram of the middle section of the safety structure of the niche-widened fire-fighting material warehouse described in the embodiment.

[0034] In the figure: 1—transport tunnel; 2—material room; 3—cube; 4—mortar; 5—material storage platform; 6—partition board; 7—double-convex tunnel; 8—double-groove hanging way; 9—lifting anchor rod; 10—inner fire door; 11—outer fire door; 12—steel riser; 13—U-bolt; 14—metal fence; 15—pulley; 16—hanging wheel; 17—lock; 18—fire mining car. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0036] This embodiment is an underground fire-fighting material warehouse of a coal mine (production capacity of 1.2 million tons / year). Its material room 2 is planned to be set in the transportation tunnel 1 near the bottom of the mine. The new tunnel is widened. According to the design, the net width of the widened material room section is 4.0m, the semicircular arch section is in the form of a semicircular arch, and the net height of the tunnel is 3.5m. The safety layout structure and method proposed in the present invention are used for construction. Figure 1~Figure 5 As shown, this embodiment provides a widened fire protection material warehouse safety layout structure and method, including the following steps:

[0037] Step 1: During excavation, the surrounding rock on one side of the bottom plate of the material room 2 to be set as a fire-fighting material warehouse is first left to form a cube 3, and then the upper end surface of the cube 3 is plastered with mortar 4, and the plastered surface is used as a material storage table 5.

[0038] Specifically, the size of the cube 3 should be reserved in advance according to the width and height of the material storage platform 5 determined by the design. Reserving the cube 3 can reduce the amount of tunnel excavation work; when the surrounding rock of the material room 2 is in a relatively stable rock formation, the outer side surface and both end surfaces of the cube 3 can be directly exposed without support treatment; when the surrounding rock of the material room 2 is in a coal seam or a rock formation with poor stability, the outer side surface and both end surfaces of the cube 3 cannot be exposed, and concrete or mortar plastering support must be adopted. If necessary, metal mesh or anchor support must be added to ensure the integrity and stability of the material storage platform 5; the thickness of the mortar 4 plastering shall not be less than 50 mm, and the surface of the material storage platform 5 shall be flat after plastering.

[0039] Furthermore, the length of the material room 2 of the fire-fighting material warehouse shall not be less than 20m, and the width of the material storage platform 5 shall be 0.8m~1.2m and the height shall be 0.5m~1.0m. During on-site construction, the length of the material room 2 is the length of the material storage platform 5, which mainly depends on the type and quantity of fire-fighting materials. According to the relevant requirements of coal mine fire protection, the length of the material room 2 shall not be less than 20m; when the coal seam has a tendency to spontaneous combustion or the mine is a large mine, the length of the material room 2 should be appropriately longer to ensure that the material storage platform 5 can store a sufficient amount of fire-fighting materials. The width and height of the material storage platform 5 shall not be too large or too small, and should be convenient for workers to store and carry fire-fighting materials.

[0040] In this embodiment, the surrounding rock of the material room 2 is a medium-stable rock formation. After excavation, the cube 3 is left with a width of 1.12m and a height of 0.75m. Since the shape of the cube 3 is not flat after excavation, the outer side and both end faces of the cube 3 are treated with concrete plastering with a thickness of 50~100mm; the upper end face of the cube 3 is plastered with mortar 4 with a thickness of 50mm, and the strength grade of mortar 4 is M10; the width of the material storage platform 5 after plastering is 1.2m and the height is 0.8mm, and the length of the material room 2 (i.e. the length of the material storage platform 5) is 21m.

[0041] Step 2, then install a fire door structure on the upper outer side of the material storage platform 5, the fire door structure includes a double-convex tunnel 7, a double-groove hanging channel 8, and a fire door, the double-track center line of the double-convex tunnel 7 and the double-groove center line of the double-groove hanging channel 8 are overlapped in the vertical direction, wherein the double-convex tunnel 7 is installed on the surface of the material storage platform 5, and the double-groove hanging channel 8 is suspended on the top plate of the material room 2 by a lifting anchor rod 9, and the inner fire door 10 and the outer fire door 11 are vertically installed alternately between the double-convex tunnel 7 and the double-groove hanging channel 8; finally, steel risers 12 are provided at the center line position of the double-convex tunnel 7 at both end faces of the cube 3, and the steel risers 12 at both ends are fixed to the two end heads of the double-convex tunnel 7 and the double-groove hanging channel 8, and metal fences 14 are provided between the lane wall of the material room 2 and the steel risers 12 above the two end faces of the cube 3 to close.

[0042] Specifically, the double-convex tunnel 7 and the double-groove hanging channel 8 are both made of finished materials. The double-convex tunnel 7 is required to have two convex tracks, and the double-groove hanging channel 8 is required to have two concave groove tracks. Moreover, the centerline distance of the double tracks of the double-convex tunnel 7 is equal to the centerline distance of the double grooves of the double-groove hanging channel 8, so that the fire door can be installed smoothly; the specifications and models of the lifting anchor rod 9 should be reasonably determined according to the surrounding rock stability of the top plate of the material room 2 and the weight of the fire door structure; the inner diameter of the steel riser 12 should be larger than the outer diameter of the lifting anchor rod 9 to ensure that the exposed section of the lifting anchor rod 9 It can be inserted into the top tube of the steel riser 12; a reasonable connection method should be used on site to fix the two ends of the double-convex tunnel 7 and the double-slot hanging channel 8 to the steel riser 12, so that the double-convex tunnel 7, the double-slot hanging channel 8 and the two steel risers 12 form an inverted "Ⅱ"-shaped whole, and the connection method must not affect the sliding of the middle fire door; the height of the metal fence 14 closed at both end faces of the cube 3 shall not be less than 2m (including the height of the material storage platform 5), and personnel shall be unable to enter under normal circumstances. The metal fence 14 can also be fully enclosed.

[0043] Furthermore, the lengths of the double-convex tunnel 7 and the double-groove hanging tunnel 8 are both equal to the length of the material storage platform 5, and the width of the center line of the double-convex tunnel 7 from the outer edge of the material storage platform 5 is 0.2m~0.4m. During on-site construction, the entire weight of the fire door will be transferred to the material storage platform 5 through the double-convex tunnel 7. When the width of the center line of the double-convex tunnel 7 from the outer edge of the material storage platform 5 is less than 0.2m, cracks are likely to occur on the outer side of the material storage platform 5, affecting the stability of the material storage platform 5 and the fire door structure; when the width is greater than 0.4m, the effective storage space of the material storage platform 5 for fire-fighting materials will be reduced. Therefore, the width of the center line of the double-convex tunnel 7 from the outer edge of the material storage platform 5 should be reasonably determined to ensure both the stability of the material storage platform 5 and the storage space of the material storage platform.

[0044] Further, such as Figure 5 As shown, the fire door includes an inner fire door 10 and an outer fire door 11. The lower end of the fire door is provided with a pulley 15, the upper end is provided with a hanging wheel 16, and the left and right ends are provided with locks 17. The pulley 15 is arranged on the double-convex tunnel 7, and the hanging wheel 16 is arranged in the double-groove hanging channel 8. The inner fire door 10 and the outer fire door 11 are fixed by the lock 17. During on-site construction, the specifications and dimensions of the inner fire door 10 and the outer fire door 11 are completely consistent, but they are arranged alternately inside and outside during installation; the height of the fire door should match the clear distance between the double-convex tunnel 7 and the double-groove hanging channel 8, and the width of a single fire door should match half of the stacking length of various fire-fighting materials. The recommended width value is preferably between 1.5 and 1.8m. Two pulleys 15, two hanging wheels 16 and two locks 17 are installed corresponding to one fire door. The specifications and dimensions of the pulley 15 should match the raised track of the double-convex tunnel 7, and the specifications and dimensions of the hanging wheel 16 should match the recessed groove track of the double-groove hanging track 8. The installation positions of the locks 17 at the left and right ends of the fire door should match each other to ensure that the fire door can be opened and closed smoothly.

[0045] Furthermore, the lifting anchor rod 9 is arranged in the top plate of the material room 2 just above the center line of the double-groove hanging way 8, and the arrangement spacing is 3m~5m; the lifting anchor rod 9 is provided with an exposed section, and the exposed sections of the lifting anchor rod 9 at both ends of the material room 2 are inserted into the top tube of the steel riser 12, and the exposed section end of the lifting anchor rod 9 in the middle area of ​​the material room 2 is fixed on the double-groove hanging way 8. During on-site construction, the arrangement spacing of the lifting anchor rods 9 shall not be greater than the length of a single double-slot hanging rail 8 material at the corresponding position (Note: the entire double-slot hanging rail 8 is welded from multiple hanging rail materials); the length of the exposed section of the lifting anchor rod 9 shall be reasonably determined based on the height of the double-slot hanging rail 8 from the top plate directly above. When the height is relatively large (taking 600mm as a benchmark), it is not appropriate to increase the length of the exposed section. In this case, it is necessary to add a sleeve or chain to the end of the exposed section of the lifting anchor rod 9 to facilitate the connection to the double-slot hanging rail 8. A reasonable connection method shall be used on site to fix the end of the exposed section of the lifting anchor rod 9 to the double-slot hanging rail 8, and the connection method shall not affect the sliding of the fire door below the double-slot hanging rail 8.

[0046] Furthermore, Figure 4 As shown, the lower part of the steel riser 12 is fixed to the end face of the cube 3 by a U-bolt 13, the bottom end of the steel riser 12 is placed on the bottom plate of the transport tunnel 1, and the top end of the steel riser 12 is close to the tray of the lifting anchor rod 9. During on-site construction, the specification and size of the U-bolt 13 should match the outer diameter of the steel riser 12. It is recommended to use two pairs of U-bolts 13 to fix one steel riser 12; other fixing methods can also be used on-site to fix the steel riser 12 to the end face of the cube 3, as long as the steel riser 12 can be guaranteed to be vertically stable.

[0047] In this embodiment, the double convex tunnel 7 is installed on the surface of the material storage platform 5, and the width from the outer edge of the material storage platform 5 is 0.25m. The double groove hanging channel 8 is installed directly above the double convex tunnel 7. The lengths of the double convex tunnel 7 and the double groove hanging channel 8 are both 21m (equal to the length of the material storage platform 5), and the net distance between the double convex tunnel 7 and the double groove hanging channel 8 is 1.65m. The height of a single fire door is 1.5m and the width is 1.7m. A total of 14 fire doors are arranged (the inner fire door 10 and the outer fire door 11 are each 7 doors); the lifting anchor rod 9 adopts Φ20×2200mm threaded steel anchor rod, the exposed section length is 500mm, the arrangement spacing is 4.2m, and a total of 6 sets are arranged (the exposed sections of the two sets of lifting anchor rods 9 at both ends are inserted into the top tube of the steel riser 12); the steel riser 12 adopts φ89×4mm seamless steel pipe, the length is 3.2m, and a total of 2 are arranged; the two end faces of the cube 3 are fully enclosed by metal fences 14, the metal fences 14 adopt No. 10 lead wire mesh, and the grid spacing is 40×40mm.

[0048] Step three, before stacking the fire-fighting materials, first equip the material room 2 with multiple fire-fighting mining trucks 18, then divide the fire-fighting materials into multiple categories and stack them on the material storage table 5 in sequence, and use partition boards 6 to separate the different types of fire-fighting materials. After stacking, use the lock 17 to close the fire-fighting door and seal the fire-fighting materials on the material storage table 5.

[0049] During on-site construction, the spacing of partition boards 6 should be reasonably determined according to the stacking length of various fire-fighting materials, and the spacing should usually be no less than 3m; the partition boards 6 can be made of bricks, stone columns, or metal blocks to form a rectangular movable partition wall, which is required to be able to partition various fire-fighting materials. The height of the partition boards 6 should be higher than the stacking height of the fire-fighting materials on both sides of the corresponding position, and the width should not affect the opening and closing of the fire-fighting door. The partition boards can be reasonably moved and set according to the occupied space of various fire-fighting materials, which is convenient for the classification and management of fire-fighting materials.

[0050] Step 4, when using a certain type of fire-fighting material, first open the lock 17 on the fire-fighting door at the corresponding position of the fire-fighting material, slide the fire-fighting door in both directions to open it, move the fire-fighting material into the fire-fighting mine truck 18, and then transport it to the underground fire-fighting location for fire safety disposal.

[0051] Furthermore, the fire-fighting materials described in this embodiment include fire-fighting tools, and the types and quantities of the fire-fighting materials and the number of fire-fighting mine trucks 18 should be determined according to the situation of the underground disaster prevention and control objects and local conditions.

[0052] In this embodiment, the underground fire-fighting material warehouse determines the types and quantities of fire-fighting materials and the number of fire-fighting mine trucks 18 according to the relevant provisions of the "Code for Fire Prevention and Extinguishing Design of Coal Mines" and the main targets of underground disaster prevention and control; and divides the fire-fighting materials into 5 categories according to the general categories. The stacking space of each type of fire-fighting materials is basically equal, and the partition boards 6 are made of bricks, with a total of 4 (no partition boards 6 are set at both ends of the material storage table 5).

[0053] Finally, the underground fire-fighting material warehouse in the coal mine of this embodiment successfully passed the quality certification and fire-fighting acceptance, and the fire door structure deformation and material storage platform 5 in the material room 2 have not occurred so far, which proves the reliability and stability of the safety layout structure of the widened fire-fighting material warehouse proposed in the present invention.

[0054] Furthermore, the above embodiment is mainly a safe arrangement structure and method for a fire material warehouse in a newly excavated and widened tunnel. When the existing transport tunnel is not wide enough and needs to be expanded and widened, it is recommended to adopt the following method: Figure 6The shown niche widened fire-fighting material warehouse structure does not need to widen and transform one side of the material room section tunnel to the tunnel floor. During the expansion and transformation, the surrounding rock below the niche is directly left to form a cube 3; since the upper two end surfaces of the cube 3 are surrounding rock walls, the steel riser 12, U-bolts 13, and metal fence 14 related links need to be eliminated during the layout, and the remaining layout structures and methods are basically the same as the aforementioned embodiments.

[0055] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A widened fire-fighting material warehouse safety layout structure, characterized in that: It comprises a material room (2) arranged in an underground transport tunnel (1) as a fire-fighting material warehouse; a cube (3) is left in the surrounding rock on one side of the bottom plate of the material room (2) as a material storage platform (5); a fire door structure is arranged on the upper side of the outer side of the material storage platform (5); the fire door structure comprises a double-convex tunnel (7), a double-groove hanging road (8) and a fire door, the double-track center line of the double-convex tunnel (7) and the double-groove center line of the double-groove hanging road (8) are arranged overlapping in the vertical direction, the double-convex tunnel (7) is arranged on the table of the material storage platform (5) through the length, and the double-groove hanging road (8) is suspended on the top plate of the material room (2) by a lifting anchor rod (9); the fire door comprises an inner fire door (10) and an outer fire door (11), and the inner fire door (10) and the outer fire door (11) are alternately arranged vertically between the double-convex tunnel (7) and the double-groove hanging road (8); Steel risers (12) are provided at the midline positions of the double-convex tunnels (7) at both end faces of the cube (3), and the steel risers (12) at both ends are fixed to the two end heads of the double-convex tunnel (7) and the double-groove hanging road (8). Metal fences (14) are provided between the tunnel wall of the material room (2) above the two end faces of the cube (3) and the steel risers (12) for sealing; The lifting anchor rod (9) is arranged in the top plate of the material room (2) just above the center line of the double-groove hanging track (8), and the arrangement interval is 3m~5m; the lifting anchor rod (9) is provided with an exposed section, and the exposed sections of the lifting anchor rod (9) at both ends of the material room (2) are inserted into the top tube of the steel riser (12), and the exposed section end of the lifting anchor rod (9) in the middle area of ​​the material room (2) is fixed on the double-groove hanging track (8); The lower ends of the inner fire door (10) and the outer fire door (11) are provided with pulleys (15), the upper ends are provided with hanging wheels (16), and the left and right ends are provided with lock buckles (17); the pulleys (15) are arranged on the double-convex tunnel (7), the hanging wheels (16) are arranged in the double-groove hanging tunnel (8), and the inner fire door (10) and the outer fire door (11) are fixed by the lock buckles (17).

2. A widened fire-fighting material warehouse safety layout structure according to claim 1, characterized in that: The lower part of the steel riser (12) is fixed to the end face of the cube (3) by means of U-shaped bolts (13), the lower end of the steel riser (12) is placed on the bottom plate of the transport tunnel (1), and the upper end of the steel riser (12) is close to the tray of the lifting anchor rod (9).

3. The widened fire-fighting material warehouse safety layout structure according to claim 1 is characterized in that: The upper end surface of the cube (3) is plastered with mortar (4) to serve as a material storage table (5), and the surface of the material storage table (5) is provided with a plurality of partition boards (6).

4. A widened fire-fighting material warehouse safety layout structure according to claim 3, characterized in that: The length of the material room (2) is ≥ 20 m, the width of the material storage table (5) is 0.8 m to 1.2 m, the height is 0.5 m to 1.0 m, and the spacing between the partition boards (6) is ≥ 3 m.

5. The widened fire-fighting material warehouse safety layout structure according to claim 1 is characterized in that: The lengths of the double-convex tunnel (7) and the double-groove hanging tunnel (8) are both equal to the length of the material storage platform (5), and the width of the center line of the double-convex tunnel (7) from the outer edge of the material storage platform (5) is 0.2m-0.4m.

6. A method for arranging a widened fire-fighting material warehouse safety arrangement structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. During excavation, the surrounding rock on one side of the floor of the material room (2) to be used as a fire-fighting material warehouse is first left to form a cube (3), and the upper end surface of the cube (3) is plastered to serve as a material storage platform (5); S2, then install a fire door structure on the upper side of the material storage platform (5), wherein the double convex tunnel (7) is installed on the surface of the material storage platform (5), the double groove hanging channel (8) is suspended on the top plate of the material room (2) by a lifting anchor rod (9), and the inner fire door (10) and the outer fire door (11) are vertically installed alternately between the double convex tunnel (7) and the double groove hanging channel (8); S3. Before stacking the fire-fighting materials, a plurality of fire-fighting mining vehicles (18) are first equipped in the material room (2). Then, the fire-fighting materials are divided into multiple categories and stacked on the material storage table (5) in sequence. The different categories of fire-fighting materials are separated by partition boards (6). After stacking, the fire-fighting door is closed and the fire-fighting materials are sealed on the material storage table (5); S4. When using a certain type of fire-fighting material, first open the fire-fighting door at the location corresponding to the fire-fighting material, move the fire-fighting material into the fire-fighting mine truck (18), and then transport it to the underground fire-fighting location for fire-fighting safety disposal.

7. The method for arranging a widened fire-fighting material warehouse safety arrangement structure according to claim 6, characterized in that: After the inner fire door (10) and the outer fire door (11) are installed, steel risers (12) and metal fences (14) are installed on both end surfaces of the cube (3).

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