An open-pit large-aperture deep-hole and short-hole combined blasting node

Abstract

This application relates to the field of mine blasting, and in particular to an open-pit large-aperture deep-hole and short-hole combined blasting node. An open-pit large-aperture deep-hole and short-hole combined blasting node includes a drill hole, an inner support assembly, and a plugging assembly. The inner support assembly includes multiple inner support members arranged in the drill hole. The inner support member includes a first installation part and an airbag sleeved on the periphery of the first installation part. The first installation parts of adjacent two groups of inner support members are detachably connected to each other, and the inner cavities of the airbags of adjacent two groups of inner support members communicate with each other. The plugging assembly includes a second installation part and a butting plate. One end of the second installation part is located in the drill hole and is connected to the adjacent first installation part, and the other end of the second installation part is located outside the drill hole opening. The butting plate is slidably sleeved on one end of the second installation part located outside the drill hole opening, and a tightening member for driving the butting plate to tightly abut against the drill hole opening is further provided on the second installation part. This application has the effect of facilitating construction workers to plug blasting drill holes.

Description

Technical Field

[0001] This application relates to the field of mine blasting, and in particular to an open-pit large-aperture deep-hole and shallow-hole combined blasting node. Background Art

[0002] Open-pit mines often use large-aperture blasting methods for mining, which are further divided into deep-hole blasting and shallow-hole blasting according to the different specifications of the drilled blasting holes. According to the construction arrangement, the surrounding environment and terrain conditions of the blasting area, deep-hole blasting, shallow-hole blasting, or a combination of deep-hole and shallow-hole blasting are timely selected for blasting construction.

[0003] During blasting construction, the phenomenon of blocked holes often occurs. For example, the inner wall of the drill hole collapses and blocks the hole, or the stone slag on the ground falls into the drill hole, and rainwater pours into the drill hole, causing the soil in the hole to silt up. The blocked drill hole will cause the change of the drill hole depth, bringing great difficulties to the subsequent charging, and even seriously scrapping the drill hole. After the drill hole is formed, if it is impossible to charge in time due to factors such as weather conditions, measures need to be taken to prevent the drill hole from being blocked and wait for the conditions to continue the operation.

[0004] At present, construction workers usually use objects such as wooden plugs or PVC plastic pipes to plug into the drill hole to reinforce the inner wall of the drill hole and block the drill hole at the same time. When there are deep holes and shallow holes in the blasting area, due to the different depths and diameters of the drill holes, construction workers need to process wooden plugs or plastic pipes of more specifications, and there are many preparatory works before plugging the drill holes, resulting in great inconvenience for construction workers to plug the drill holes. Summary of the Invention

[0005] In order to facilitate construction workers to plug blasting drill holes, this application provides an open-pit large-aperture deep-hole and shallow-hole combined blasting node.

[0006] The open-pit large-aperture deep-hole and shallow-hole combined blasting node provided by this application adopts the following technical solutions:

[0007] An open-pit large-aperture deep-hole and shallow-hole combined blasting node includes a drill hole, an inner support assembly, and a plugging assembly; the inner support assembly includes multiple inner support members arranged along the axis of the drill hole in the drill hole, the inner support member includes a first installation part and an airbag sleeved on the periphery of the first installation part, the first installation parts of adjacent two groups of inner support members are detachably connected, and the inner cavities of the airbags of adjacent two groups of inner support members are communicated with each other; the plugging assembly includes a second installation part and a butting plate, one end of the second installation part is located in the drill hole and is connected to the adjacent first installation part, the other end of the second installation part is located outside the drill hole opening, the butting plate is slidably sleeved on one end of the second installation part located outside the drill hole opening, and the second installation part is also provided with a pressing member for driving the butting plate to tightly press against the drill hole opening.

[0008] By adopting the above technical solution, the construction personnel use a suitable number of inner support members according to the depth of the blocked borehole, splice the inner support members section by section, complete the connection of the first installation part and the communication between the airbags, and gradually push them into the borehole. Then, the airbags of the inner support members are inflated, and each airbag is inflated to fit closely to the inner wall of the borehole corresponding to its length range, thereby playing the role of temporarily supporting the inner wall of the blasting borehole.

[0009] When installing the plugging assembly, the second mounting part is connected to the first mounting part at the top. After the airbag is expanded and pressed against the inner wall of the borehole, the abutment plate is pressed against the opening of the borehole through the abutment member to prevent slag from falling into the borehole or reduce the amount of rainwater flowing into the borehole, and the plugging operation of the borehole is completed. When loading explosives, the construction personnel will discharge the air in the airbag to make the airbag separate from the inner wall of the borehole, so as to facilitate the removal of the inner support member from the borehole.

[0010] This solution can adapt to the inner walls of drill holes of different hole depths by connecting the inner support parts section by section. Secondly, the setting of the airbag enables the inner support parts to support drill holes of different apertures within the deformation range of the airbag. The opening of the drill hole is then blocked by abutment plates and abutment parts to prevent slag from falling into the drill hole and reduce the amount of rainwater flowing into the drill hole, thereby improving the effect of blocking the drill hole. Compared with the prior art, this solution can block drill holes of different specifications using the same device, eliminating the processing and preparation work before blocking the drill hole, thereby facilitating the construction personnel to block the blasting drill hole.

[0011] Preferably, the abutting member includes an air cylinder installed on the second mounting portion, the air cylinder is located on the side of the abutment plate away from the drilling hole opening, a sliding portion for abutting the abutment plate is slidably provided inside the air cylinder, and a sliding direction of the sliding portion is parallel to the axial extension direction of the drilling hole; the inner cavity of the air cylinder is connected to the air bag of the adjacent inner support member.

[0012] By adopting the above technical solution, the gas filled in the air cylinder will drive the sliding part to move toward the abutment plate until it abuts against the abutment plate, and the abutment plate will block the opening of the drilled hole. The construction workers use the same air pump equipment to inflate the air bag and the air cylinder at the same time, so that the air bag can be tightly attached to the wall of the drilled hole and the abutment plate can block the opening of the drilled hole, saving construction operation steps and improving efficiency.

[0013] Preferably, the inner support assembly further comprises an inflation tube, which passes through the second mounting portion and the multi-section first mounting portion in sequence and is communicated with the air bag located at the bottom end of the drill hole.

[0014] By adopting the above technical solution, the inflatable tube first inflates the airbag located at the bottom end of the drill hole. The multiple airbags in the drill hole will expand successively from bottom to top. Finally, the gas is filled into the air cylinder, and then the sliding part is driven to tightly abut against the abutting plate. At this time, since the airbag has been closely attached to the inner wall of the drill hole, the position of the inner support assembly is fixed. The reaction force of the abutting plate on the abutting part will not easily lift the second installation part together with the inner support assembly, so that the abutting plate can smoothly seal the orifice of the drill hole, greatly improving the convenience of the operation of the construction personnel.

[0015] Preferably, both the first installation part and the second installation part are hollow. The inflatable tube sequentially passes through the inner cavities of the second installation part and multiple sections of the first installation part.

[0016] By adopting the above technical solution, the first installation part and the second installation part that are hollow can reduce the materials required for manufacturing them, reduce the manufacturing cost and facilitate handling. Secondly, during the process of splicing the first installation part, it is possible to thread the inflatable tube more quickly.

[0017] Preferably, the air cylinder is provided with an exhaust port communicating with the inner cavity of the air cylinder.

[0018] By adopting the above technical solution, when removing the inner support assembly from the drill hole, the inflatable tube and the exhaust port are opened together, which can accelerate the discharge speed of the gas in the airbag, the airbag can contract faster, and the waiting time for the construction personnel to conveniently remove the inner support assembly will also be reduced.

[0019] Preferably, an embedding groove for embedding the abutting plate is provided at the orifice of the drill hole, and the bottom surface of the abutting plate fits with the bottom of the embedding groove.

[0020] By adopting the above technical solution, after the drill hole is completed, an embedding groove is additionally opened on the ground around the orifice of the drill hole. The purpose is to trim the ground around the orifice of the drill hole and provide a flat abutting plane for the abutting plate to ensure that the abutting plate can effectively block rainwater from flowing into the drill hole.

[0021] Preferably, a sealing ring is provided on the bottom surface of the abutting plate.

[0022] By adopting the technical solution, after the abutting plate is subjected to the pressure of the abutting part, the sealing ring will be extruded and deformed, which can further seal the gap between the abutting plate and the bottom of the embedding groove, improving the effect of the abutting plate in sealing the orifice of the drill hole.

[0023] Preferably, an expanding plate is also sleeved on the second installation part. The cross-sectional area of the expanding plate is larger than the cross-sectional area of the abutting plate, and the bottom surface of the abutting plate abuts against the top surface of the expanding plate.

[0024] By adopting the above technical solution, when the diameter of the drilled hole is relatively large, the abutting plate is used in cooperation with the expanding plate. After the abutting plate receives the acting force of the abutting member, it is pressed tightly against the expanding plate, and the expanding plate can continue to smoothly close the orifice of the drilled hole.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By providing the multi-section inner support members and the plugging assembly, construction workers can use an appropriate number of inner support members according to the depth of the drilled hole to be plugged. The inner support members can support drilled holes with different diameters within the deformation range of the airbag. The abutting plate and the abutting member plug the orifice of the drilled hole to prevent stone slag from falling into the drilled hole and reduce the amount of rainwater flowing into the drilled hole, thereby improving the effect of plugging the drilled hole;

[0027] 2. By setting the abutting member to drive the sliding part to move by inflating the air cylinder, construction workers can use the same air pumping device to complete the close contact between the airbag and the hole wall of the drilled hole and the plugging of the orifice of the drilled hole by the abutting plate, saving construction operation steps and improving efficiency;

[0028] 3. By providing the air charging pipe, the airbags in the drilled hole are inflated with gas in sequence from bottom to top and expand, so that the inner support members can be fixed in the drilled hole in advance, enabling the abutting plate to smoothly close the orifice of the drilled hole. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the blasting node in the embodiment of the present application;

[0030] Figure 2 is a schematic diagram mainly showing the structure of the inner support member and the connection between the air charging pipe and the airbag;

[0031] Figure 3 is a schematic diagram mainly showing the structure of the plugging assembly;

[0032] Figure 4 is a schematic diagram mainly showing the installation structure of the expanding plate.

[0033] Description of the Reference Numerals: 1, drilled hole; 11, groove; 2, inner support assembly; 21, inner support member; 211, first installation part; 212, airbag; 22, first communication pipe; 23, air charging pipe; 3, plugging assembly; 31, second installation part; 32, abutting plate; 33, abutting member; 331, air cylinder; 3311, exhaust port; 332, sliding part; 333, abutting rod; 34, second communication pipe; 35, expanding plate; 36, sealing ring. Detailed Description of the Embodiment

[0034] The following will further elaborate on the present application in conjunction with the attached Figures 1-4 drawings.

[0035] The present application embodiment discloses an open-air large-diameter deep hole and shallow hole combined blasting node. Figure 1 The blasting node includes a drilling hole 1, an internal support component 2 and a plugging component 3.

[0036] Reference Figure 1 and Figure 2 The inner support assembly 2 includes a multi-section inner support member 21 arranged in the borehole 1. The multi-section inner support member 21 is arranged along the axis extension direction of the borehole 1, and two adjacent sections of the inner support member are connected. The inner support member 21 includes a first mounting portion 211. The first mounting portion 211 is hollow inside. In this embodiment, the cross-section of the first mounting portion 211 is in the shape of a circular ring. A circle of airbags 212 is sleeved on the outer wall of the first mounting portion 211. The two ends of the airbags 212 are respectively sealed and connected to the outer wall of the first mounting portion 211. The inner cavity of the airbags 212 has the same thickness around its radial direction. Each two adjacent first mounting portions 211 are connected by end screw connection. Each two adjacent airbags 212 are connected by a first connecting pipe 22. The first connecting pipe 22 is located on the outside of the first mounting portion 211. Gas is transmitted between the two adjacent airbags 212 through the first connecting pipe 22.

[0037] Reference Figure 2 , the outer diameter of the airbag 212 of each section of the inner support member 21 is smaller than the aperture of the borehole 1 under normal conditions. In the present embodiment, the airbag 212 is made of an elastic material, and expands and deforms after being filled with gas. In other embodiments, the airbag 212 may also be made of other airtight and deformable materials. After the inner cavity of the airbag 212 is filled with gas, the circumference of the airbag 212 expands in a direction away from the first mounting portion 211, that is, the side of the circumference of the airbag 212 away from the first mounting portion 211 approaches the inner wall of the borehole 1 until it is in close contact with the inner wall of the borehole 1. After the gas in the airbag 212 is discharged, the airbag 212 shrinks to break away from the conflict with the inner wall of the borehole 1, and the construction personnel can easily remove the inner support member 21 from the borehole 1.

[0038] Reference Figure 1 and Figure 3 The plugging assembly 3 includes a second mounting portion 31, on which an abutment plate 32 and abutment member 33 are sequentially arranged. The second mounting portion 31 is also hollow inside. In this embodiment, the cross section of the second mounting portion 31 is in the shape of a circular ring, and the inner and outer diameters of the second mounting portion 31 are the same as those of the first mounting portion 211. One end of the second mounting portion 31 extends into the borehole 1 and is screwed to a section of the first mounting portion 211 near the opening of the borehole 1, and the other end of the second mounting portion 31 extends out of the borehole 1, and the abutment plate 32 and the abutment member 33 are sequentially arranged from bottom to top on the portion of the second mounting portion 31 located outside the borehole 1.

[0039] The abutting plate 32 is slidably sleeved on the second mounting portion 31, and the inner wall of the abutting plate 32 is in contact with the outer wall of the second mounting portion 31. In this embodiment, the cross-section of the abutting plate 32 is taken as an annular shape, and the outer diameter of the abutting plate 32 is larger than the diameter of the drilling hole 1.

[0040] Referring to Figure 3 , the tightening member 33 includes a cylinder 331 with one end open. The cross-section of the barrel body of the cylinder 331 is annular. The inner diameter of the cylinder 331 is larger than the outer diameter of the second mounting portion 31. The closed end of the cylinder 331 is fixedly sleeved on the second mounting portion 31, and the open end of the other end of the cylinder 331 faces the abutting plate 32. A sliding portion 332 for pressing the abutting plate 32 is slidably arranged in the cylinder 331. The sliding portion 332 is slidably sleeved on the second mounting portion 31. The inner wall of the sliding portion 332 is in airtight contact with the outer wall of the second mounting portion 31, and the outer wall of the sliding portion 332 is in airtight contact with the inner wall of the cylinder 331. Three abutting rods 333 are fixedly connected to the bottom of the sliding portion 332. The three abutting rods 333 are all parallel to the axis of the sliding portion 332, and the three abutting rods 333 are circumferentially and equally angularly spaced around the axis of the sliding portion 332. The sliding portion 332 abuts against the abutting plate 32 through the abutting rods 333.

[0041] After the closed cavity surrounded by the cylinder 331, the sliding portion 332 and the second mounting portion 31 is filled with gas, the sliding portion 332 will be pushed downward until the abutting rods 333 abut the abutting plate 32 against the orifice of the drilling hole 1, and the abutting plate 32 will close the orifice of the drilling hole 1 to reduce the amount of rainwater flowing into the drilling hole 1.

[0042] Referring to Figure 3 , a second communication pipe 34 is connected between the inner cavity of the cylinder 331 and the airbag 212 of the adjacent inner support member 21, which is convenient for synchronously controlling the inflation of the airbag 212 and the increase of the air pressure in the cylinder 331. The second communication pipe 34 is located in the pipe formed by connecting the first mounting portion 211 and the second mounting portion 31. One end of the second communication pipe 34 communicates with the airbag 212 from the inside of the first mounting portion 211, and the other end communicates with the inner cavity of the cylinder 331 from the inside of the second mounting portion 31, so as to successfully avoid the blockage of the abutting plate 32 and eliminate the need to drill holes in the abutting plate 32.

[0043] In order to prevent the reaction force of the abutting plate 32 on the abutting rods 333 from lifting the inner support assembly 2 in the drilling hole 1 together with the drilling hole 1, the position of the inner support member 21 in the drilling hole 1 needs to be fixed in advance. Referring to Figure 1 and Figure 2 , the inner support assembly 2 further includes an inflation pipe 23 for inflating the airbag 212. The inflation pipe 23 is sequentially arranged inside the multi-section first mounting portion 211. The bottom end of the inflation pipe 23 communicates with an airbag 212 located at the bottom end of the drilling hole 1, and the top end of the inflation pipe 23 passes through the second mounting portion 31 and extends out of the drilling hole 1.

[0044] The setting of the inflation tube 23 allows the multiple airbags 212 in the inner support assembly 2 to be inflated with gas in a bottom-up order, and finally fill the inner cavity of the gas cylinder 331. At the same time, the expansion of the airbags 212 will occur first compared to the increase of the air pressure in the gas cylinder 331. When the sliding part 332 presses the abutting plate 32 against the opening of the borehole 1, the position of the inner support member 21 in the borehole 1 is fixed because the airbags 212 are in close contact with the inner wall of the borehole 1. Therefore, the increased air pressure in the gas cylinder 331 can smoothly drive the sliding part 332 to press against the abutting plate 32, and the abutting plate 32 can effectively close the opening of the borehole 1.

[0045] It is worth mentioning that when pumping gas into the airbag 212 through the inflation tube 23, the gas input amount must be controlled to be greater than the gas discharge amount flowing into the next airbag 212, so that the expansion of the airbag 212 and the gas circulation between the airbags 212 can be carried out synchronously, ensuring that when the abutment plate 32 is pressed against the opening of the borehole 1, the position of the inner support assembly 2 in the borehole 1 is fixed.

[0046] Reference Figure 3 The air cylinder 331 is also provided with an exhaust port 3311. When the inner support member 21 needs to be taken out from the borehole 1, the exhaust port 3311 and the inflation tube 23 are opened at the same time, which can accelerate the discharge speed of the gas in the airbag 212, thereby reducing the waiting time of the construction personnel before taking out the inner support member 21.

[0047] Reference Figure 3 , a circle of embedding grooves 11 for embedding the abutment plate 32 is provided around the opening of the borehole 1, the diameter of the embedding grooves 11 is the same as that of the abutment plate 32, and the bottom surface of the abutment plate 32 is in contact with the bottom of the embedding grooves 11. After the borehole 1 is opened, the embedding grooves 11 are opened around the opening of the borehole 1 by manual and mechanical excavation in accordance with the specifications of the abutment plate 32, so as to repair a flatter surface than the original ground to abut against the abutment plate 32, ensuring that the abutment plate 32 can effectively block rainwater from flowing into the borehole 1.

[0048] Reference Figure 3 A sealing ring 36 is fixed to the bottom surface of the abutting plate 32. In this embodiment, the sealing ring 36 is made of elastic rubber material. After being squeezed and deformed, the sealing ring 36 can further seal the gap between the abutting plate 32 and the bottom of the groove 11, thereby improving the effect of the abutting plate 32 in sealing the opening of the drill hole 1.

[0049] Reference Figure 4, in another embodiment, the plugging assembly 3 further includes an expansion plate 35 sleeved on the second mounting portion 31, and the expansion plate 35 and the abutting plate 32 are arranged in sequence from bottom to top. Taking the cross-section of the expansion plate 35 as an annular shape, the outer diameter of the abutting plate 32 is smaller than the outer diameter of the expansion plate 35 and larger than the inner diameter of the expansion plate 35. The abutting plate 32 is used in cooperation with the expansion plate 35 to close the drill hole 1 with a diameter larger than the diameter of the abutting plate 32.

[0050] At this time, the size of the embedded groove 11 is opened with reference to the diameter of the expansion plate 35. A sealing ring 36 is also fixed to the bottom surface of the expansion plate 35. The sealing ring 36 on the bottom surface of the abutting plate 32 abuts tightly against the expansion plate 35, and the sealing ring 36 on the bottom surface of the expansion plate 35 abuts tightly against the bottom of the embedded groove 11.

[0051] The implementation principle of the embodiment of the present application is as follows: When the drill hole 1 for blasting needs to be plugged, the construction personnel first renovate the ground around the orifice of each drill hole 1 one by one, and excavate an embedded groove 11 of corresponding size at the orifice of the drill hole 1 with reference to the specification of the abutting plate 32 to be used.

[0052] Determine the number of inner support members 21 to be used according to the depth of the drill hole 1. Connect the multiple inner support members 21 to each other by screwing through the first mounting portion 211. The air bags 212 of the inner support members 21 are connected by the first connecting pipe 22, and the inner support member 21 that first enters the drill hole 1 is connected to the inflating pipe 23, and the inflating pipe 23 passes through the inner cavity of the subsequently connected first mounting portion 211.

[0053] While the inner support members 21 are being connected to each other, they are gradually pushed into the drill hole 1. Before the last inner support member 21 enters the drill hole 1, first screw the second mounting portion 31 onto the first mounting portion 211, and the inflating pipe 23 passes through the second mounting portion 31. Then push the second mounting portion 31 into the drill hole 1 so that the abutting plate 32 abuts in the pre-opened embedded groove 11.

[0054] After the inner support assembly 2 and the plugging assembly 3 are installed, use an air pump to inflate the air bags 212 of the inner support members 21 and the air cylinders 331 of the abutting members 33 through the inflating pipe 23. The air bags 212 of the inner support members 21 in the drill hole 1 will be inflated and expanded from bottom to top, and each air bag 212 will be tightly attached to the inner wall of the drill hole 1 within its corresponding length range. Finally, the gas is filled into the air cylinder 331, and then the sliding portion 332 is driven to move downward to abut tightly against the abutting plate 32, and the abutting plate 32 will abut tightly in the embedded groove 11, and the plugging of the orifice of the drill hole 1 is completed.

[0055] When it is necessary to load explosives into the drill hole 1, the construction personnel open the inflating pipe 23 and the exhaust port 3311 at the same time. As the gas in the air bags 212 is discharged, each air bag 212 will contract and disengage from the inner wall of the drill hole 1, and the construction personnel can pull out the inner support members 21, and then the charging operation can be started.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An open-pit large-aperture deep-hole and shallow-hole combined blasting node, Characterized in that: It includes a drill hole (1), an inner support assembly (2) and a plugging assembly (3); The inner support assembly (2) includes multiple groups of inner support members (21) arranged in the drill hole (1) along the axis of the drill hole (1). The inner support member (21) includes a first installation part (211) and an airbag (212) sleeved on the periphery of the first installation part (211). The first installation parts (211) of adjacent two groups of inner support members (21) are detachably connected, and the inner cavities of the airbags (212) of adjacent two groups of inner support members (21) are communicated with each other; Each adjacent two sections of the first installation part (211) are connected by end screwing. A first communication pipe (22) is communicated between each adjacent two airbags (212). The first communication pipe (22) is located outside the first installation part (211). Gas is transmitted between adjacent two airbags (212) through the first communication pipe (22); The plugging assembly (3) includes a second installation part (31) and a butting plate (32). One end of the second installation part (31) is located in the drill hole (1) and is connected to the adjacent first installation part (211). The other end of the second installation part (31) is located outside the orifice of the drill hole (1). The butting plate (32) is slidably sleeved on one end of the second installation part (31) located outside the orifice of the drill hole (1). A tightening member (33) for driving the butting plate (32) to tightly abut against the orifice of the drill hole (1) is also provided on the second installation part (31); The tightening member (33) includes an air cylinder (331) installed on the second installation part (31). The air cylinder (331) is located on the side of the butting plate (32) away from the orifice of the drill hole (1). A sliding part (332) for abutting against the butting plate (32) is slidably arranged in the air cylinder (331). The sliding direction of the sliding part (332) is parallel to the axial extension direction of the drill hole (1); The inner cavity of the air cylinder (331) is communicated with the airbag (212) of the adjacent inner support member (21); The inner support assembly (2) further includes an air charging pipe (23). One end of the air charging pipe (23) is located outside the drill hole (1), and the other end is located in the drill hole (1) and is communicated with the airbag (212) located at the bottom end of the drill hole (1); Both the first installation part (211) and the second installation part (31) are hollowly arranged. The air charging pipe (23) sequentially passes through the inner cavities of the second installation part (31) and multiple sections of the first installation part (211); An embedding groove (11) for embedding the butting plate (32) is opened at the orifice of the drill hole (1), and the bottom surface of the butting plate (32) is attached to the bottom of the embedding groove (11).

2. The open-pit large-aperture deep-hole and shallow-hole combined blasting node according to claim 1, Characterized in that: An exhaust port (3311) communicating with the inner cavity of the air cylinder (331) is provided on the air cylinder (331).

3. The open-pit large-aperture deep-hole and shallow-hole combined blasting node according to claim 1, Characterized in that: A sealing ring (36) is provided on the bottom surface of the butting plate (32).

4. The open-pit large-aperture deep-hole and shallow-hole combined blasting node according to claim 1, Characterized in that: An expansion plate (35) is further sleeved on the second mounting portion (31). The cross-sectional area of the expansion plate (35) is larger than the cross-sectional area of the abutting plate (32), and the bottom surface of the abutting plate (32) abuts against the top surface of the expansion plate (35).

Images