A borehole blasting device

Abstract

The application discloses a blast hole blasting device, which comprises explosive columns and a connecting mechanism for connecting the explosive columns. The explosive column comprises an explosive core filled with explosive and an eliminating agent cover sleeved on the outer layer of the explosive core. The eliminating agent cover comprises a carbon monoxide eliminating agent interlayer for filling the carbon monoxide eliminating agent. When the explosive column is initiated, the explosive can cause the eliminating agent cover to break, so that the internally filled carbon monoxide eliminating agent rapidly spreads and fully contacts with the carbon monoxide generated in the blasting process, thereby eliminating the harmful gas, avoiding the retention and accumulation of the carbon monoxide in the roadway, reducing the poisoning risk of workers, improving the air environment in the mine, and greatly improving the construction safety and operation efficiency. Through the integrated design of the eliminating agent and the explosive structure, the additional equipment or complex operation is avoided, and the device structure is compact and convenient to install.

Description

Technical Field

[0001] This application relates to the field of borehole blasting technology, and in particular to a borehole blasting device. Background Technology

[0002] In coal mine tunneling operations, especially in hard rock strata or complex geological conditions, blasting is often used for rapid excavation. While blasting is highly efficient, the explosives rapidly decompose and burn under high temperature and pressure, inevitably producing large amounts of toxic and harmful gases, with carbon monoxide being one of the most significant toxic byproducts. Inhaling high concentrations of carbon monoxide in a short period can cause headaches, vomiting, coma, and even suffocation, posing a significant threat to the lives of underground workers.

[0003] Traditional coal mine blasting operations typically rely on ventilation systems to dilute or remove toxic gases generated during blasting. However, this method has limitations such as slow response, low purification efficiency, and dependence on airflow organization, making it difficult to completely eliminate residual carbon monoxide in localized areas within a short time, especially in narrow tunnels or areas with poor airflow, posing significant safety hazards. Therefore, there is an urgent need for a device that can simultaneously release and rapidly eliminate carbon monoxide during blasting to improve safety during coal mine tunneling operations. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems and provide a blasting device for blast holes.

[0005] The present invention provides a borehole blasting device, comprising explosive charges and a connecting mechanism for connecting each of the explosive charges; The explosive charge includes an explosive core filled with explosives and an eliminator shroud covering the outer layer of the explosive core. The eliminator shroud includes a carbon monoxide eliminator interlayer.

[0006] Furthermore, the borehole blasting device also includes a charge with a carbon monoxide eliminator; The elimination charge is connected to the explosive charge via the connecting mechanism.

[0007] Furthermore, the connection mechanism includes mutually compatible serial sockets and serial connectors; The series connector is located at one end of the explosive charge and the detonator charge, and the series socket is located at the other end of the explosive charge and the detonator charge.

[0008] Furthermore, the connecting mechanism includes a pin for securing the connection between the serial connector and the serial socket; The side of the serial connector and the serial insertion hole are respectively provided with fixing holes adapted to the pin, and the pin can be detachably inserted into the fixing holes.

[0009] Furthermore, the explosive core is provided with a detonation hole, and an electric detonator is installed inside the detonation hole, with an electric detonator connected to an electric wire.

[0010] Furthermore, the eliminator shroud includes a first inner liner layer disposed between the carbon monoxide eliminator interlayer and the explosive core.

[0011] Furthermore, the eliminator shroud includes a prefabricated inner liner layer that covers the carbon monoxide eliminator interlayer.

[0012] Furthermore, the eliminator shroud includes a second inner liner layer that covers the prefabricated inner liner layer.

[0013] Furthermore, the eliminator liner includes a waterproof layer that covers the second inner liner.

[0014] Furthermore, the eliminator liner includes a support block for supporting the first inner liner, the support block being disposed between the explosive core and the first inner liner.

[0015] The above technical solution has the following beneficial effects: This application discloses a borehole blasting device, comprising explosive charges and a connecting mechanism for connecting the explosive charges. Each explosive charge includes an explosive core filled with explosives and an eliminator shroud surrounding it. The eliminator shroud includes a carbon monoxide eliminator interlayer for filling with carbon monoxide eliminator. When the explosive charge is detonated, the explosives cause the eliminator shroud to rupture, allowing the internally filled carbon monoxide eliminator to rapidly diffuse and fully contact the carbon monoxide generated during the blasting process, thereby eliminating harmful gases, preventing carbon monoxide from accumulating in the tunnel, reducing the risk of worker poisoning, improving the underground air environment, and significantly enhancing construction safety and operational efficiency. By integrating the eliminator and explosive structure into a single design, additional equipment or complex operations are avoided, resulting in a compact and easy-to-install device. Attached Figure Description

[0016] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of a borehole blasting device in one embodiment of this application; Figure 2 This is a left-side view of a borehole blasting device according to an embodiment of this application; Figure 3 This is a right-side side view of a borehole blasting device according to an embodiment of this application; Figure 4 This is a cross-sectional view of the eliminator shroud in one embodiment of this application.

[0017] Reference table for attached figures: Explosive charge 1: explosive core 11, detonation hole 111, eliminator liner 12, carbon monoxide eliminator interlayer 121, first inner lining layer 122, prefabricated inner lining layer 123, second inner lining layer 124, waterproof layer 125, support block 126. Connecting mechanism 2: series insertion hole 21, series head 22, pin 23, fixing hole 24; Eliminate the explosive charge 3 and the electric detonator 4. Detailed Implementation

[0018] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0019] It is readily understood that, based on the technical solution of this application, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this application. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this application and should not be considered as the entirety of this application or as limitations or restrictions on the technical solution of the application.

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meanings of the above in this application according to the specific circumstances.

[0022] like Figures 1-4 As shown, a borehole blasting device according to one embodiment of this application includes explosive charges 1 and a connecting mechanism 2 for connecting each of the explosive charges 1; The explosive charge 1 includes an explosive core 11 filled with explosives and an eliminator shroud 12 sleeved on the outer layer of the explosive core 11; The eliminator cover 12 includes a carbon monoxide eliminator interlayer 121.

[0023] In this embodiment, the borehole blasting device includes explosive charges 1 and a connecting mechanism 2. The connecting mechanism 2 is used to connect each explosive charge 1. Each explosive charge 1 includes an explosive core 11 filled with explosives and an eliminator cover 12 sleeved on the outer layer of the explosive core 11. The eliminator cover includes a carbon monoxide eliminator interlayer 121 filled with carbon monoxide eliminator. When the explosive charge 1 is detonated, the impact force will cause the eliminator cover 12 to rupture, thereby releasing the carbon monoxide eliminator therein.

[0024] By integrating the carbon monoxide eliminator into the explosive charge 1, the blasting operation and hazardous gas control can be carried out simultaneously. The explosive core 11 breaks up the rock, and the carbon monoxide eliminator released during the explosion rapidly diffuses to form an ultrafine dust cloud. This cloud comes into full contact with the carbon monoxide produced by the blast and undergoes a chemical reaction, thus directly eliminating the carbon monoxide. This effectively reduces the carbon monoxide concentration during blasting in the underground working face, improves the working environment, ensures the safety of workers, and avoids the complex operation of additional eliminator devices. The device is compact, easy to install, and safe and reliable to use.

[0025] like Figures 1-3 As shown, in one preferred embodiment, it further includes an eliminator column 3 having a carbon monoxide eliminator; The elimination charge 3 is connected to the explosive charge 1 via the connecting mechanism 2.

[0026] In this preferred embodiment, the borehole blasting device further includes a carbon monoxide scavenging charge 3. The charge 3 is filled with a carbon monoxide scavenging agent and connected to the explosive charge 1 via a connecting mechanism 2. During blasting, the charge 3 breaks or tears apart as the explosive charge 1 detonates, releasing the carbon monoxide scavenging agent. This agent diffuses within the borehole and comes into contact with the carbon monoxide generated by the blast. The arrangement of the charge 3 allows the carbon monoxide scavenging agent to be evenly distributed along the borehole, forming a wider ultrafine dust cloud that can fully react with the carbon monoxide generated by the blast, achieving immediate air purification. This design not only improves the safety of the downhole working environment and reduces the risk of poisoning for workers, but also considers structural flexibility and ease of installation. The number and length of the charge 3 can be selected according to actual needs, thereby optimizing the scavenging effect and enhancing the practical value of the device.

[0027] In one embodiment, the detonator 3 is disposed at the end of the explosive charge 1.

[0028] In this embodiment, the carbon monoxide eliminator 3 is placed at the end of the explosive charge 1. When the explosive charge 1 is detonated, it will not hinder the propagation of the explosive. At the same time, it can release carbon monoxide eliminator during the blasting process, thereby purifying the air immediately, reducing the carbon monoxide concentration in the well, improving construction safety, and balancing blasting efficiency with the effect of harmful gas control. The structure is reasonable and easy to install. Furthermore, an eliminator 3 can be set at each end of the explosive charge segment composed of multiple explosive charges to optimize the distribution range and control effect of the carbon monoxide eliminator in the borehole.

[0029] like Figures 1-3 As shown, in one embodiment, the connection mechanism 2 includes a series connector 22 and a series socket 21 that are mutually adapted to each other; The serial connector 22 is adapted to the serial socket 21. The serial connector 22 is disposed at one end of the explosive charge 1 and the detonation charge 3, and the serial socket 21 is disposed at the other end of the explosive charge 1 and the detonation charge 3.

[0030] In this embodiment, the connecting mechanism 2 includes a series connector 22 and a series insertion hole 21 adapted to the series connector 22. The series connector 22 is located at one end of the explosive charge 1 or the detonating charge 3, and the series insertion hole 21 is located at the other end. This is used to connect the explosive charges 1 and the detonating charge 3 end to end, forming a continuous borehole device. This achieves a reliable end-to-end connection of multiple explosive charges 1 and detonating charges 3, enabling the charges within the borehole to form a continuous blasting sequence, ensuring unimpeded propagation of the explosive. The connection method is simple in structure and easy to install. The number of charges can be flexibly increased or decreased according to the borehole length, ensuring uniform distribution of the detonating agent within the borehole, balancing blasting efficiency and harmful gas control effects, and improving the overall practicality and reliability of the device.

[0031] like Figure 2 and Figure 3 As shown, in one embodiment, the connecting mechanism 2 includes a pin 23 for securing the connection between the serial head 22 and the serial socket 21; The sides of the serial connector 22 and the serial insertion hole 21 are respectively provided with fixing holes 24 that are adapted to the pin 23, and the pin 23 can be detachably inserted into the fixing holes 24.

[0032] In this embodiment, the connecting mechanism 2 includes a pin 23. The sides of the series connector 22 and series insertion hole 21 are respectively provided with fixing holes 24 adapted to the pin 23. The pin 23 is detachably inserted into the fixing hole 24, thereby locking the connection between the series connector 22 and the series insertion hole 21. Multiple explosive charges 1 and detonating charges 3 can not only be connected by insertion, but also achieve higher connection stability through the mechanical limiting effect of the pin 23. This not only enhances the tensile and torsional resistance of each charge, but also maintains good detachability, allowing construction personnel to flexibly adjust the number and position of explosive charges 1 and detonating charges 3 according to the actual borehole depth and operational requirements. This ensures that the borehole blasting device maintains a robust and reliable overall structure during use, significantly improving the stability and safety of the connecting mechanism 2.

[0033] like Figure 1 As shown, in another embodiment, the explosive core 11 is provided with a detonation hole 111, and an electric detonator 4 is provided inside the detonation hole 111, and the electric detonator 4 is connected to an electric wire.

[0034] In this embodiment, the explosive core 11 is provided with a detonation hole 111, and an electric detonator 4 is installed inside the detonation hole 111. This ensures that the electric detonator 4 can be stably embedded and will not shift or loosen due to vibrations during transportation, installation, or blasting preparation, effectively guaranteeing the accuracy and safety of detonation. The electric detonator 4 is connected to an electrical wire for detonation, establishing a connection with an external control unit, thereby realizing remote ignition control of the explosive charge 1. In one embodiment, the borehole blasting device includes a small number of explosive charges 1. A detonation hole 111 is provided only on the explosive core 11 of one of the explosive charges 1. An electric detonator 4 is installed within this detonation hole 111 and connected to an electrical wire. This electric detonator 4 serves as the sole initiation source, igniting the explosive core 11 and detonating the remaining explosive cores 11 through the detonation transmission effect between the explosives. Reducing the number of electric detonators 4 simplifies the layout, lowering installation workload and construction costs. Due to the excellent transmission characteristics between explosives, a single electric detonator 4 can ensure the successful detonation of all explosive cores 11, meeting the energy requirements of blasting operations while avoiding the complex circuit connection problems caused by multiple detonators connected in parallel. This structure is suitable for borehole operations with relatively small explosive charge requirements and simple structural layouts, offering advantages of safety, economy, and convenience.

[0035] In another embodiment, the borehole blasting device includes multiple explosive charges 1, each explosive charge 1 having an explosive core 11 with a detonation hole 111. Each detonation hole 111 contains an electric detonator 4, and each electric detonator 4 is connected to an external detonation control system via an electric wire. This ensures that even if one explosive core 11 experiences poor energy transmission or partial damage, the other explosive cores 11 can still detonate independently via their respective electric detonators 4, significantly improving the reliability and safety of blasting operations. Especially in large-scale blasting or complex underground geological conditions, this structure effectively avoids misfires and incomplete detonation, ensuring uniform release of blasting energy and improving tunneling efficiency and safety levels.

[0036] like Figure 4 As shown, in one embodiment, the eliminator shroud 12 includes a first inner liner 122 disposed between the carbon monoxide eliminator interlayer 121 and the explosive core 11.

[0037] In this embodiment, the eliminator shroud 12 further includes a first inner liner 122 disposed between the carbon monoxide eliminator interlayer 121 and the explosive core 11. The first inner liner 122 is in close contact with the outer wall of the explosive core 11, serving as an isolation and buffer, effectively preventing direct contact between the eliminator and the explosive, and preventing the stability of the explosive from being affected by friction, moisture, or chemical reactions, thereby improving the overall safety of the device. At the same time, the first inner liner 122 ensures that the carbon monoxide eliminator interlayer 121 can be smoothly broken under the impact of an explosion, fully releasing the eliminator, allowing the eliminator to diffuse rapidly and react with carbon monoxide in the air, thereby further improving the treatment effect of harmful gases after the blast.

[0038] like Figure 4 As shown, in one embodiment, the eliminator shroud 12 includes a prefabricated inner liner 123 that covers the carbon monoxide eliminator interlayer 121.

[0039] In this embodiment, the carbon monoxide eliminator cover 12 includes a prefabricated inner liner 123, which covers and protects the carbon monoxide eliminator interlayer 121, effectively enhancing the overall strength of the cover and preventing damage or leakage of the carbon monoxide eliminator interlayer 121 due to external forces during assembly or transportation.

[0040] like Figure 4 As shown, in one embodiment, the eliminator shroud 12 includes a second inner liner 124 that covers the prefabricated inner liner 123.

[0041] In this embodiment, the scavenger liner 12 includes a second inner liner 124, which covers the prefabricated inner liner 123, further improving the overall sealing and protective performance of the scavenger liner 12 and preventing the influence of external environmental factors such as moisture and dust on the carbon monoxide scavenger interlayer 121. Simultaneously, the second inner liner 124 also provides protection for the prefabricated inner liner 123 during the handling and loading of the explosive charge into the borehole, preventing damage to the interlayer or premature leakage of the scavenger due to friction or collision.

[0042] like Figure 4 As shown, in one embodiment, the eliminator shroud 12 includes a waterproof layer 125 that covers the second inner liner 124.

[0043] In this embodiment, the eliminator liner 12 includes a waterproof layer 125 covering the outer surface of the second inner liner 124, effectively improving the adaptability of the device in complex downhole environments and preventing the risk of groundwater, moisture, or penetrating liquids wetting, diluting, or prematurely degrading the internal carbon monoxide eliminator interlayer 121. The waterproof layer 125 ensures that the eliminator remains stable throughout the entire process of loading, transportation, storage, and filling the borehole, and its reaction effect will not be reduced due to moisture.

[0044] like Figure 4 As shown, in one embodiment, the eliminator liner 12 includes a support block 126 for supporting the first inner liner 122, the support block 126 being disposed between the explosive core 11 and the first inner liner 122.

[0045] In this embodiment, the eliminator shroud 12 includes a support block 126, which is disposed between the explosive core 11 and the first inner liner 122 to support the first inner liner 122, so that the first inner liner 122 maintains a stable position outside the explosive core 11, ensuring that the eliminator shroud 12 does not deform or collapse during filling, handling or stacking, thereby maintaining the integrity and uniform distribution of the carbon monoxide eliminator interlayer 121.

[0046] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0047] The above description is merely the principle and preferred embodiment of this application. It should be noted that for those skilled in the art, implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of this invention. Based on the principle of this application, several other modifications can also be made, which should also be considered within the protection scope of this application.

Claims

1. A blasting device for boreholes, characterized in that, It includes explosive charges (1) and connecting mechanisms (2) for connecting each of the explosive charges (1); The explosive charge (1) includes an explosive core (11) filled with explosive and an eliminator cover (12) sleeved on the outer layer of the explosive core (11). The eliminator shield (12) includes a carbon monoxide eliminator interlayer (121).

2. The blasting device for boreholes according to claim 1, characterized in that, The borehole blasting device also includes an eliminator charge (3) containing a carbon monoxide eliminator. The elimination charge (3) is connected to the explosive charge (1) via the connecting mechanism (2).

3. The blasting device for boreholes according to claim 2, characterized in that, The connecting mechanism (2) includes mutually compatible serial sockets (21) and serial connectors (22). The series connector (22) is located at one end of the explosive charge (1) and the detonating charge (3), and the series socket (21) is located at the other end of the explosive charge (1) and the detonating charge (3).

4. A borehole blasting device according to claim 3, characterized in that, The connecting mechanism (2) includes a pin (23) for fixing the connection between the serial socket (21) and the serial head (22). The side of the serial connector (22) and the serial insertion hole (21) are respectively provided with fixing holes (24) that are adapted to the pin (23), and the pin (23) can be detachably inserted into the fixing holes (24).

5. A borehole blasting device according to claim 1, characterized in that, The explosive core (11) is provided with a detonation hole (111), and an electric detonator (4) is provided inside the detonation hole (111). The electric detonator (4) is connected to an electric wire.

6. A borehole blasting device according to claim 1, characterized in that, The eliminator shroud (12) includes a first inner liner (122), which is disposed between the carbon monoxide eliminator interlayer (121) and the explosive core (11).

7. A borehole blasting device according to claim 6, characterized in that, The eliminator cover (12) includes a prefabricated inner liner (123) that covers the carbon monoxide eliminator interlayer (121).

8. A borehole blasting device according to claim 7, characterized in that, The eliminator shroud (12) includes a second inner liner (124) that covers the prefabricated inner liner (123).

9. A borehole blasting device according to claim 8, characterized in that, The eliminator liner (12) includes a waterproof layer (125) that covers the second inner liner (124).

10. A borehole blasting device according to claim 9, characterized in that, The eliminator shroud (12) includes a support block (126) for supporting the first inner liner (122), the support block (126) being disposed between the explosive core (11) and the first inner liner (122).

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