Mine explosion pit with bulletproof shell flying structure

Abstract

The utility model relates to a mine explosion pit with bulletproof outer flying structure, including the foundation pit of setting concrete bottom wall, the glass steel pipe of wearing in the foundation pit and the filling layer of filling between the foundation pit and glass steel pipe, the glass steel pipe is laid with lower sand layer, the buffer cloth of supporting mine is covered on lower sand layer, fills with upper sand layer and water layer on upper sand layer on the buffer cloth, the thickness of upper sand layer is greater than the length of mine, the lower end of glass steel pipe is sealedly connected on concrete bottom wall, the concrete bottom wall constitutes the bottom wall of glass steel pipe, the water tank is equipped with steel sheet layer, the lower surface of steel sheet layer is equipped with silica gel layer for adhering bullet, the steel sheet layer is supported on concrete bottom wall through a plurality of pull rods, the utility model has the advantages of preventing bullet outer flying and recycling bullet, solves the problem that the existing destruction device cannot effectively prevent the outer flying when the explosive mine explodes.

Description

Technical Field

[0001] This utility model relates to the field of ammunition disposal technology, and in particular to a mine blasting pit with a structure designed to prevent shrapnel from flying outwards. Background Technology

[0002] In real life, there are situations where it is necessary to destroy mines left over from wartime. Common methods for ammunition disposal include incineration, explosion, chemical decomposition, ultraviolet oxidation, microwave plasma, and electron beam treatment. Song Guifei et al. designed an explosive tunnel for the explosive disposal of waste ammunition; Wen Jianping et al. designed and implemented chamber explosive disposal, successfully destroying more than 1,000 pieces of waste ammunition. Wang Dongsheng et al. studied the explosive disposal of waste ammunition in a tower and designed a disposal tower capable of safely detonating waste ammunition; Yu Shubao et al. compared various disposal methods and proposed the covered explosion method. The United States has also reported a reusable, large-scale, sealed steel structure explosive chamber with exhaust. Dell'Orco et al. reported kinetic studies of hydrothermal treatment of PBX9354 using a hydrothermal oxidation instrument. Calzavara et al. used corrosion-resistant titanium to make a reactor, and the reaction process could use a stirrer that generated eddies to prevent inorganic precipitation, with 99% of the solution components being oxidized. Fleser et al. studied the treatment of octogen-based plastic-bonded explosives using supercritical water oxidation technology. Experimental results showed that most organic matter was oxidized into non-polluting gases such as CO2, N2, and N2O. In 1999, Xu Zheng et al.

[26] first derived the process of TNT molecule degradation in pulsed plasma to treat TNT wastewater. Zhang Can et al. used pulsed plasma technology to treat simulated TNT wastewater, and the results showed that under certain conditions, TNT was completely degraded, producing straight-chain alkanes and benzene-containing organic compounds. Incineration and explosive destruction technologies, which have low technical requirements, are more commonly used, while other green destruction methods have relatively high technical requirements and economic costs, and are mostly in the laboratory research stage. Currently, when blasting mines, it is not possible to effectively prevent the shrapnel generated by the explosion from flying outwards, thus hindering the recovery of the shrapnel and reducing environmental pollution. Utility Model Content

[0003] The present invention aims to provide a mine blasting pit with a structure designed to prevent shrapnel from flying out, thereby facilitating the recovery of shrapnel. This solves the problem that existing disposal devices cannot effectively prevent shrapnel from flying out during the explosion of mines.

[0004] The above technical problems are solved by the following technical solution: a mine blasting pit with an anti-shrapnel structure, characterized in that it includes a foundation pit with a concrete bottom wall, a fiberglass pipe inserted into the foundation pit, and a filling layer between the foundation pit and the fiberglass pipe. The fiberglass pipe contains a lower sand layer, a buffer cloth supporting the mine covering the lower sand layer, an upper sand layer on the buffer cloth, and a water layer on the upper sand layer. The thickness of the upper sand layer is greater than the length of the mine. The lower end of the fiberglass pipe is sealed to the concrete bottom wall. On the earthen base wall, the concrete base wall forms the base wall of the fiberglass pipe. A steel plate layer is installed inside the water tank. A silicone layer for adhering shrapnel is provided on the lower surface of the steel plate layer. The steel plate layer is supported on the concrete base wall by several tie rods. The blasting process is as follows: the mine is placed on a buffer cloth, then covered with a sand layer, and then water is poured to form a water layer. An explosive charge is attached to the mine, and the explosive charge contains a detonator. The detonator's fuse is pulled to a designated location. When the fuse is ignited, the explosive charge explodes, detonating the mine. Shrapnel flying upwards during the explosion can be embedded in the silicone layer, facilitating the removal of shrapnel after the explosion and reducing shrapnel residue.

[0005] Preferably, the filling layer is a sound-insulating sponge structure, which can reduce the noise generated during mine detonation.

[0006] Preferably, the filler layer is bonded to the fiberglass pipe. This allows the filler layer to be easily removed along with the tempered glass during the clearing of the blast site.

[0007] Preferably, the steel plate layer is sealed together with the fiberglass pipe, and a vacuum cavity is formed between the silicone layer and the water layer. This can more effectively buffer the shock waves generated by the explosion.

[0008] Preferably, the lower end of the pull rod is provided with a connecting lug, the connecting lug having a vertical threaded through hole, and a drill bit inserted into the soil below the concrete bottom wall is internally threaded into the vertical threaded through hole. The concrete bottom wall has a drill bit mounting hole for fitting onto the drill bit. The lower surface of the connecting lug has a concrete pouring groove with a blind end on the inside, and the outer end of the concrete pouring groove extends through the side of the connecting lug. Both the concrete pouring groove and the drill bit mounting hole are filled with concrete. The drill bit has a lower end seal. The upper end of the plug has a vertical hole that penetrates the upper surface of the plug. The lower end of the outer circumference of the plug has vertically distributed receiving grooves along its circumference. A blocking rod is installed within the receiving groove, and the upper end of the blocking rod is hinged to the receiving groove via a hinge shaft. A through hole is provided in the bottom wall of the receiving groove. A drive arm, extending into the vertical hole through the through hole, is connected to the upper end of the blocking rod. A drive rod, which presses the drive arm through the vertical hole, rotates the lower end of the blocking rod about the hinge shaft to the outside of the receiving groove. The installation process of the pull rod is as follows: First, rotate the plug so that it passes through the plug mounting hole and is inserted into the soil under the concrete bottom wall to a set depth, thus fixing the pull rod. Then, press down the drive rod to press the drive arm, causing the lower end of the blocking rod to rotate about the hinge shaft to the outside of the receiving groove to a set length, maintaining the blocking rod in its current state. Then, concrete is poured into the plug mounting hole through a concrete pouring trough, thus casting the plug together with the concrete bottom wall. The barrier bar increases the force required to pull out the insert, making it more difficult to pull out and thus ensuring more reliable fixation of the V-shaped support beam.

[0009] Preferably, the surface of the blocking rod away from the bottom wall of the receiving groove has a vertical cutting edge facing away from the bottom wall of the receiving groove. Blocking strips are inserted through both sides of the blocking rod along the width direction of the receiving groove. Two blocking strips are connected together by a spring. The spring drives the two blocking strips to separate and extend the blocking rod. The blocking strips are only outside the receiving groove along their entire length when the length of the blocking rod extending out of the receiving groove reaches a set value. This design makes it easier to extend the blocking rod out of the receiving groove, and after the blocking rod is fully extended, the blocking strips extend, resulting in a wider blocking rod, thereby increasing the effectiveness of preventing the insertion pin from being pulled out.

[0010] Preferably, a threaded sleeve is provided inside the vertical hole, and the drive rod is threadedly connected to the threaded sleeve. The upper end of the insertion rod has a regular hexagonal prism segment, and the upper end of the drive rod has a drive through hole located above the insertion rod. The threaded sleeve provides a threaded connection, making it easier for the drive rod to enter the vertical hole and drive the barrier, while also ensuring the barrier remains in an unclosed state. The regular hexagonal prism segment allows the insertion rod to be rotated using a wrench. The drive through hole allows the rod to be inserted into the drive through hole to rotate the drive rod.

[0011] This invention has the following advantages: it is economical to destroy, and it can impede the outward-flying shrapnel, thus preventing it from flying out and facilitating its recovery. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the blasting process in Example 1; Figure 2 for Figure 1 A partial schematic diagram; Figure 3 This is a schematic diagram showing the moment when the rod insert of the tie rod in Example 2 is just inserted into the soil below the concrete bottom wall; Figure 4 for Figure 3 A magnified schematic diagram of a portion at point A; Figure 5 for Figure 3 Schematic diagram of B-B section; Figure 6 This is a diagram showing the tie rod after installation. Figure 7 for Figure 6 A magnified schematic diagram of a portion at point C.

[0013] In the diagram: 1. Concrete bottom wall; 2. Foundation pit; 3. Fiberglass pipe; 4. Filling layer; 6. Lower sand layer; 7. Buffer cloth; 8. Upper sand layer; 9. Water layer; 10. Mine; 11. Mine explosive charge; 12. Steel plate layer; 13. Silicone layer; 14. Tie rod; 15. Vacuum cavity; 18. Connecting lug; 19. Soil; 20. Vertical threaded through hole; 21. Insert rod; 22. Vertical hole; 23. Regular hexagonal prism segment; 24. Receiving groove; 25. Barrier bar; 26. Hinge shaft; 27. Through hole; 28. Drive arm; 29. ​​Drive rod; 30. Threaded sleeve; 31. Drive through hole; 32. Vertical cutting edge; 33. Barrier bar; 34. Spring; 35. Insert rod mounting hole; 36. Concrete pouring groove; 37. Side of connecting lug; 38. Concrete. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1, see Figure 1 and Figure 2A mine blasting pit with an anti-shrapnel structure includes a pit 2 with a concrete bottom wall 1, a fiberglass pipe 3 inserted inside the pit, and a filling layer 4 between the pit and the fiberglass pipe. The filling layer is a sound-insulating sponge structure. The filling layer is bonded to the fiberglass pipe. The fiberglass pipe is sealed and bonded to the concrete bottom wall.

[0016] The fiberglass pipe contains a lower sand layer 6, a buffer cloth 7 covering the lower sand layer to support the mine, an upper sand layer 8 on top of the buffer cloth, and a water layer 9 on top of the upper sand layer. In use, the mine 10 is placed horizontally on the buffer cloth, with its warhead facing the open side of the pit. The thickness of the upper sand layer is greater than the length of the mine, and the diameter of the fiberglass pipe is at least 1.5 times the length of the mine, and the length of the fiberglass pipe is at least 1.5 times the diameter of the fiberglass pipe. During blasting, the mine is placed on the buffer cloth, then the upper sand layer is flipped over, and then water is poured to form a water layer. An explosive charge 11 is attached to the mine, containing a detonator. The detonator's fuse is pulled to a designated location outside the tempered glass pipe. When the fuse is ignited by a detonator, the explosive charge explodes, detonating the mine. The concrete base wall forms the base wall of the fiberglass pipe. A steel plate layer 12 is installed inside the water tank. A silicone layer 13 for attaching elastic clips is provided on the lower surface of the steel plate layer. The steel plate layer is supported on the concrete base wall by several tie rods 14, which are cast together with the concrete base wall. The steel plate layer is sealed to the fiberglass pipe, and a vacuum cavity 15 is formed between the silicone layer and the water layer.

[0017] Example 2 differs from Example 2 in that: See Figures 3 to 7The lower end of the pull rod is provided with a connecting lug 18. The connecting lug is provided with a vertical threaded through hole 20, and the vertical threaded through hole is internally threaded to a rod 21 inserted into the soil 19 below the concrete bottom wall. The concrete bottom wall is provided with a rod mounting hole 35 fitted onto the rod. The lower surface of the connecting lug is provided with a concrete pouring groove 36 with a blind end on the inside. The outer end of the concrete pouring groove passes through the side 37 of the connecting lug. Concrete 38 is poured into both the concrete pouring groove and the rod mounting hole. The rod is provided with a vertical hole 22 with a closed lower end and a through upper end on the upper surface of the rod. The upper end of the rod is provided with a regular hexagonal prism section 23. The lower end of the outer circumference of the insertion rod is provided with several vertically distributed receiving grooves 24 along the circumference of the insertion rod. A blocking rod 25 is provided within each receiving groove. The upper end of the blocking rod is hinged to the receiving groove via a hinge pin 26. A through hole 27 is provided on the bottom wall of the receiving groove. A drive arm 28, passing through the through hole and extending into a vertical hole, is connected to the upper end of the blocking rod. A drive rod 29, which presses the drive arm through the vertical hole, rotates the lower end of the blocking rod about the hinge pin to the outside of the receiving groove. A threaded sleeve 30 is provided inside the vertical hole, and the drive rod is threadedly connected to the threaded sleeve. The upper end of the drive rod has a drive through hole 31 located above the insertion rod. The process of installing the tie rod is as follows: First, rotate the insert rod so that it passes through the insert rod installation hole and is inserted into the soil under the concrete bottom wall to a set depth to fix the tie rod. Then, press down the drive rod to press the drive arm, so that the lower end of the barrier rod rotates around the hinge axis to the outside of the receiving groove to a set length and keeps the barrier rod in its current state. Then, concrete is injected into the insert rod installation hole through the concrete pouring groove to cast the insert rod together with the concrete bottom wall.

[0018] The surface of the barrier bar away from the bottom wall of the receiving groove has a vertical cutting edge 32 facing away from the bottom wall of the receiving groove. Barrier strips 33 are inserted through both sides of the barrier bar along the width of the receiving groove. The two barrier strips are connected together by several springs 34, which drive the two barrier strips to separate and extend the barrier bar. The barrier strips are only located outside the receiving groove along their entire length when the length of the barrier bar extending out of the receiving groove reaches a set value (in this embodiment, the barrier bar is in a position perpendicular to the insertion pin).

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mine blasting crater with an anti-shrapnel structure, characterized in that, The system includes a foundation pit with a concrete bottom wall, a fiberglass pipe inserted into the foundation pit, and a filling layer between the foundation pit and the fiberglass pipe. The fiberglass pipe contains a lower sand layer, a buffer cloth covering the lower sand layer to support the mine, an upper sand layer on the buffer cloth, and a water layer on the upper sand layer. The thickness of the upper sand layer is greater than the length of the mine. The lower end of the fiberglass pipe is sealed to the concrete bottom wall, which forms the bottom wall of the fiberglass pipe. The water tank contains a steel plate layer, and the lower surface of the steel plate layer has a silicone layer for adhering shrapnel. The steel plate layer is supported on the concrete bottom wall by several tie rods.

2. The mine blasting crater with an anti-shrapnel structure according to claim 1, characterized in that, The filling layer is a sound-insulating sponge structure.

3. A mine blasting crater with an anti-shrapnel structure according to claim 2, characterized in that, The filler layer is bonded to the fiberglass pipe.

4. A mine blasting crater with an anti-shrapnel structure according to claim 1, 2, or 3, characterized in that, The steel plate layer is sealed together with the fiberglass pipe, and a vacuum cavity is formed between the silicone layer and the water layer.

5. A mine blasting crater with an anti-shrapnel structure according to claim 1, 2, or 3, characterized in that, The lower end of the pull rod is provided with a connecting lug, which has a vertical threaded through hole. A guide rod inserted into the soil below the concrete base wall is internally threaded into the vertical threaded through hole. The concrete base wall has a guide rod mounting hole for mounting the guide rod. The lower surface of the connecting lug has a concrete pouring groove with a blind end on the inside. The outer end of the concrete pouring groove extends through the side of the connecting lug. Both the concrete pouring groove and the guide rod mounting hole are filled with concrete. The guide rod has a closed lower end and an upper... A vertical hole is provided on the upper end face of the insert rod. The lower end of the outer peripheral surface of the insert rod is provided with a vertical receiving groove distributed along the circumference of the insert rod. A blocking rod is provided in the receiving groove. The upper end of the blocking rod is hinged in the receiving groove by a hinge shaft. A through hole is provided on the bottom wall of the receiving groove. A drive arm is connected to the upper end of the blocking rod and extends into the vertical hole through the through hole. A drive rod is provided in the vertical hole to press the drive arm so that the lower end of the blocking rod rotates to the outside of the receiving groove about the hinge shaft.

6. A mine blasting crater with an anti-shrapnel structure according to claim 5, characterized in that, The surface of the barrier bar away from the bottom wall of the receiving groove is provided with a vertical cutting edge facing away from the bottom wall of the receiving groove. The barrier bar is provided with barrier strips on both sides along the width direction of the receiving groove. The two barrier strips are connected together by a spring. The spring is used to drive the two barrier strips to separate and extend out of the barrier bar. When the length of the barrier bar extending out of the receiving groove reaches a set value, the barrier strip is located outside the receiving groove along its entire length.

7. A mine blasting crater with an anti-shrapnel structure according to claim 6, characterized in that, The vertical hole is provided with a threaded sleeve, the drive rod is threadedly connected to the threaded sleeve, the upper end of the insertion rod is provided with a regular hexagonal prism segment, and the upper end of the drive rod is provided with a drive through hole located above the insertion rod.

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