Rock breaking method using single-hole multi-section type blocking charge

Abstract

The invention belongs to the technical field of drilling and blasting method construction, and discloses a rock breaking method using single-hole multi-section type blocking charge, which comprises a mechanical arm mounted on a charge truck, a charge pipe assembly mounted at one end of the mechanical arm, a material conveying pipe mounted on the two sides of the mechanical arm, and a material conveying pipe mounted on the other end of the charge pipe assembly, the bracket is used for placing blasting explosives and protecting signal wires; through cooperation of structures such as the charging pipe assembly and the detonator mounting assembly, the integrity of a signal wire can be guaranteed in the charging process, the signal wire is guided and limited through an arc-shaped guide groove, and the signal wire can enter a limiting groove in the side face of a rubber pressing head; and the signal wire is extruded into the wire placement groove through the extrusion pushing block machine, so that the part, in the charging pipeline main body, of the signal wire can be kept in the wire placement groove during charging and filling, and the signal wire cannot be scratched and damaged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of drilling and blasting construction, and particularly relates to a rock breaking method using single-hole multi-section plugging charging. BACKGROUND

[0002] The rock breaking method using single-hole multi-section plugging charging is a blasting technique for realizing efficient blasting by optimizing the charging structure of a blast hole, and the core of the technique is to arrange explosives in sections in a single hole and isolate each charging section by using plugging materials to form a multi-section independent initiation energy release mode. By filling sand, rock powder or air spacer as a plugging layer in each charging section, the early escape of explosive gas is prevented, and the bottom charge is allowed to break hard rock first by micro-difference detonator control of the delay time at initiation, the middle charge is allowed to assist in breaking, and the upper charge is allowed to reduce the rate of large blocks at the hole mouth, so that a uniform breaking effect is finally formed.

[0003] In the process of single-hole multi-section plugging charging, the important problems include the thickness of the filling interval between each charging section and the completeness of the lead wire during multi-section filling. Using a traditional charging vehicle for charging, generally single-section charging, the filler is replenished at one time and pressed tightly from the top. When the charging tube compacts the middle filler during multi-section charging, it will scratch the lead wire that is not protected by the filler, which can easily damage the lead wire of the bottom and middle charges, resulting in failure to initiate and affecting the rock breaking efficiency. If the charging is filled by hand, it is difficult to control the thickness of the filling between the charges, and the efficiency of manually compacting the filler is low. Therefore, the rock breaking method using single-hole multi-section plugging charging is proposed. SUMMARY

[0004] To solve the problems raised in the background art, the present application provides a rock breaking method using single-hole multi-section plugging charging.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: The rock breaking method using single-hole multi-section plugging charging comprises blasting explosives and an electronic detonator, and the electronic detonator is provided with a signal lead wire at one end, and comprises the following steps: S1. Drilling a blast hole according to a blasting point, and performing hole cleaning treatment on the blast hole, and then loading 25%, 25% and 50% of the total explosive charge from the bottom of the hole upwards in turn, and the total explosive charge is not more than 1.6 kg; S2. The bottom blasting explosive is put into the hole, and the electronic detonator for detonation is inserted into the inside of the blasting explosive when the blasting explosive is put in, and the signal lead wire is kept remaining on the ground by 30 cm to 50 cm, and then 10 cm of plugging filler is poured and compacted, and then the middle blasting explosive is put in, and the operation is repeated until the top blasting explosive is filled, and finally the filler reaching the ground is filled on the top side of the top blasting explosive; S3, after confirming the safety of the on-site personnel and equipment, start the electronic detonator to detonate the blasting explosive, the blasting explosive is detonated from bottom to top with an interval of 17 ms, and a man-made water curtain is used to reduce dust at the same time of detonation.

[0006] The device for using single-hole multi-section type blocking charge comprises a mechanical arm installed on a charging vehicle, material conveying pipes are installed on both sides of the mechanical arm, and the device further comprises: A charging pipe assembly is installed at one end of the mechanical arm and is used for placing and protecting signal wires of the blasting explosive; A detonator installation assembly is arranged on the side of the charging pipe assembly and is used for inserting the electronic detonator into the blasting explosive; A pressing assembly is arranged in the charging pipe assembly and is used for pressing the filler; The charging pipe assembly comprises a charging pipe main body fixedly connected with the mechanical arm, and a material conveying cavity and a wire placing groove are arranged in the charging pipe main body; The detonator installation assembly comprises a detonator conveying channel fixedly connected with the outer side of the upper end of the charging pipe main body and a detonator positioning groove movably connected with the inside of the charging pipe main body, and an electric telescopic rod is fixedly connected with the inside of the detonator positioning groove; The pressing assembly comprises a hydraulic telescopic rod fixedly connected with the top of the charging pipe main body, a shell is fixedly connected with the output end of the hydraulic telescopic rod, and a sliding rod and a rubber pressing head are slidably connected with one end of the shell.

[0007] Preferably, a pair of material conveying pipes and blasting explosive conveying pipes are fixedly connected with the outer side of the charging pipe main body, a feeding cavity in communication with the material conveying pipes is arranged in the middle of the charging pipe main body, a storage cavity is arranged at the connection position of the blasting explosive conveying pipes and the middle of the charging pipe main body, and the storage cavity and the detonator installation assembly are arranged on both sides of the charging pipe main body.

[0008] Preferably, the feeding cavity is in communication with a straight groove, the straight groove penetrates through the bottom of the charging pipe main body, a pair of straight grooves for the sliding of the rubber pressing heads are arranged in the charging pipe main body, and a plurality of elastic protruding blocks with one end fixedly connected with the inner wall of the wire placing groove are linearly arranged in the wire placing groove.

[0009] Preferably, the detonator conveying channel is in communication with the detonator positioning groove and the charging pipe main body, a toothed plate is fixedly connected with the bottom of the detonator positioning groove, a first motor fixedly connected with the inside of the charging pipe main body is arranged at the bottom of the detonator positioning groove, and a transmission gear one engaged with the toothed plate is arranged at the output end of the first motor.

[0010] Preferably, a wire protection plate rotatably connected with the charging pipe main body is arranged at one end of the detonator positioning groove, and an arc-shaped guide groove is arranged in the bottom of the side of the wire protection plate facing the detonator positioning groove. The detonator mounting assembly further comprises an extrusion push block slidingly connected to the side surface of the rubber compression head, and the extrusion push block is elastically connected to the rubber compression head through spring I.

[0011] Preferably, the detonator positioning groove is in the same vertical position as the wire placement groove, the detonator positioning groove can slide into the inside of the charging pipe body and move to the inside of the explosive storage cavity to abut against the blasting explosive, the arc-shaped guide groove is curved towards the wire placement groove, the upper and lower sides of the extrusion push block are arc-shaped, the middle part of the extrusion push block slides in the inside of the wire placement groove, and the extrusion push block abuts against the elastic protruding block.

[0012] Preferably, the output end of the electric telescopic rod is provided with an elastic clamping block, the electronic detonator abuts against the elastic clamping block, the electronic detonator is pointed towards the end of the explosive storage cavity, when the electric telescopic rod pushes the signal wire to penetrate into the inside of the blasting explosive, the elastic clamping block clamps the tail end of the signal wire at this time, and when the detonator positioning groove resets, the blasting explosive is pulled into the middle part of the charging pipe body through the elastic clamping block and the signal wire.

[0013] Preferably, a second motor is fixedly connected in the inside of the shell, a rotating disc is rotatably connected in the inside of the shell, the second motor drives the rotating disc to rotate through a plurality of transmission gears II, a rotating rod is hingedly connected to one side of the rotating disc, and the end, away from the rotating disc, of the rotating rod is hingedly connected with the sliding rod.

[0014] Preferably, the sliding rod is fixedly connected with the rubber compression head, a limiting groove is formed in the corresponding position of the side surface of the rubber compression head and the wire placement groove, the extrusion push block is located in the inside of the limiting groove, and spring II is sleeved on the middle part of the sliding rod.

[0015] Compared with the prior art, the present application has the following beneficial effects: Through the cooperation of the charging pipe assembly and the detonator mounting assembly, the integrity of the signal wire can be ensured during charging, the signal wire enters the inside of the limiting groove in the side surface of the rubber compression head through the arc-shaped guide groove for guiding and limiting, the signal wire is extruded into the inside of the wire placement groove through the extrusion push block, the part of the signal wire inside the charging pipe body can be kept in the wire placement groove during charging and filling, and the part of the signal wire outside the charging pipe body is surrounded by the filling material and will not be scratched, so that the integrity of the electronic detonator of the middle explosive of the bottom explosive can be ensured during multi-section charging, and complete detonation can be ensured. The application cooperates the structures of the charging pipe assembly and the pressing assembly, and then facilitates the filling of the blasting explosive and the filler in sequence, the blasting explosive is delivered to the bottom of the blasting hole through the charging pipe main body, and the filler is delivered through the material delivery cavity, so that the efficiency of charging is ensured, the thickness of the filler can be controlled, the blasting explosive and the filler are filled in sequence by controlling the delivery sequence, the filler can be pressed by the pressing assembly after each filling, the effect of explosive is ensured within the expectation, and the filling process can be completed at one time to improve the work efficiency; The application cooperates the structures of the charging pipe assembly and the detonator installation assembly, and then facilitates the installation of the electronic detonator into the explosive, the electronic detonator is moved to abut the blasting explosive through the detonator positioning groove, and then the electronic detonator is inserted into the blasting explosive through the electric telescopic rod, so that the electronic detonator can be installed during charging, the electronic detonator is prevented from being inserted into the blasting explosive in advance and being damaged or falling off during the pipeline delivery process, and the safety and stability are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a middle section view of the application; Figure 3 It is an enlarged view of the middle section of the charging pipe main body of the application; Figure 4 It is a schematic diagram of the cross section of the charging pipe main body of the application; Figure 5 It is a schematic diagram of the connection between the charging pipe assembly and the detonator installation assembly of the application; Figure 6 It is a schematic diagram of the exploded view of the detonator installation assembly of the application; Figure 7 It is a schematic diagram of the cooperation between the detonator installation assembly and the rubber pressing head of the application; Figure 8 It is a schematic diagram of the cooperation between the detonator installation assembly and the rubber pressing head of the application; Figure 7 It is an enlarged schematic diagram of position A in the application; Figure 9 It is a middle section view of the pressing assembly of the application; Figure 10 It is an enlarged schematic diagram of position B in the application. Figure 9

[0017] In the drawing: 1, mechanical arm; 2, material delivery pipe; 3, charging pipe assembly; 301, charging pipe main body; 302, straight groove; 303, material delivery cavity; 304, wire placement groove; 305, elastic protruding block; 306, feeding cavity; ​4. Detonator installation assembly; 401. Detonator delivery channel; 402. Detonator positioning groove; 403. Toothed plate; 404. First motor; 405. Transmission gear one; 406. Electric telescopic rod; 407. Wire protection plate; 408. Arc-shaped guide groove; 409. Extrusion push block; 4010. Spring one; 5. Explosive delivery pipe; 6. Clamping assembly; 601. Hydraulic telescopic rod; 602. Housing; 603. Second motor; 604. Turntable; 605. Rotating rod; 606. Slide rod; 607. Rubber clamping head; 608. Limiting groove; 609. Spring II; 7. Electronic detonator; 8. Signal wire; 9. Drug storage chamber. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 10 As shown, the present invention provides a rock-breaking method using a single-hole multi-stage plugging charge, including explosives and an electronic detonator 7, with a signal wire 8 provided at one end of the electronic detonator 7, and includes the following steps; S1. Drill blasting holes according to the blasting point, and clean the blasting holes. Then divide the blasting holes into three sections, and load 25%, 25% and 50% of the total explosive charge in sequence from the bottom of the hole upwards. The total explosive charge shall not exceed 1.6 kg. S2. Place the bottom explosive charge into the hole. When placing the explosive charge, insert the electronic detonator 7 into the explosive charge and keep the signal wire 8 30cm to 50cm above the ground. Then fill in 10cm of plugging filler and compact it. Then place the middle explosive charge and repeat the operation until the top explosive charge is filled. Finally, fill the top explosive charge with filler that reaches the ground. S3. After confirming the safety of personnel and equipment on site, activate electronic detonator 7 to detonate the explosive. The detonation interval of the explosive from bottom to top is 17ms. At the same time as detonation, use artificial water curtain to suppress dust.

[0020] like Figures 1 to 10 As shown, a device for single-hole multi-stage plugging and loading of medicine includes a robotic arm 1 mounted on a medicine loading vehicle, material conveying pipes 2 mounted on both sides of the robotic arm 1, and further includes: The explosive loading tube assembly 3 is installed at one end of the robotic arm 1 and is used to place the explosive charge and protect the signal wire 8. The detonator mounting assembly 4 is arranged on the side of the charging pipe assembly 3, and is used for inserting the electronic detonator 7 into the blasting explosive; The pressing assembly 6 is arranged in the charging pipe assembly 3, and is used for pressing the filler; The charging pipe assembly 3 comprises a charging pipe body 301 fixedly connected with the mechanical arm 1, and the charging pipe body 301 is internally provided with a material conveying cavity 303 and a wire placing groove 304; The detonator mounting assembly 4 comprises a detonator conveying channel 401 fixedly connected to the outer side of the upper end of the charging pipe body 301 and a detonator positioning groove 402 movably connected to the inside of the charging pipe body 301, and the detonator positioning groove 402 is fixedly connected with an electric telescopic rod 406; The pressing assembly 6 comprises a hydraulic telescopic rod 601 fixedly connected to the top of the charging pipe body 301, and the output end of the hydraulic telescopic rod 601 is fixedly connected with a shell 602, and one end of the shell 602 is slidably connected with a sliding rod 606 and a rubber pressing head 607.

[0021] As shown in the drawings, Figures 2 to 4 The charging pipe body 301 is fixedly connected with a pair of material conveying pipes 2 and blasting explosive conveying pipes 5 on the outer side, and the charging pipe body 301 is provided with a feeding cavity 306 communicated with the material conveying pipes 2 in the middle, and the blasting explosive conveying pipes 5 are connected with the charging pipe body 301 in the middle, and the charging pipe body 301 is provided with a storage cavity 9 on both sides of the charging pipe body 301; The feeding cavity 306 is communicated with the straight groove 302, and the straight groove 302 penetrates through the bottom of the charging pipe body 301, and the charging pipe body 301 is internally provided with a pair of straight grooves 302 for sliding of the rubber pressing head 607, and the wire placing groove 304 is linearly provided with an elastic protruding block 305 fixedly connected with the inner wall of the wire placing groove 304.

[0022] By arranging the charging pipe assembly 3, the blasting explosive and the filler are placed in sequence by the charging pipe body 301 and the material conveying cavity 303 arranged in the charging pipe body 301, and the charging pipe body 301 does not need to be taken out, which ensures the efficiency of charging and controls the thickness of the filler, and the storage cavity 9 is arranged to synchronize the installation of the electronic detonator 7 with the charging to ensure safety and improve efficiency; The arrangement of the wire placing groove 304 and the elastic protruding block 305 enables the signal wire 8 to be not damaged during the charging process, the wire placing groove 304 provides a space for avoiding the signal wire 8 from being extruded, and the elastic protruding block 305 blocks the signal wire 8 to avoid the signal wire 8 from being extruded and damaged during the pressing of the filler.

[0023] As shown in the drawings, Figures 5 to 8As shown, the detonator conveying channel 401 is connected with the detonator positioning groove 402 and the charging pipeline main body 301, the bottom of the detonator positioning groove 402 is fixedly connected with a tooth plate 403, and the bottom of the detonator positioning groove 402 is provided with a first motor 404 fixedly connected inside the charging pipeline main body 301, and the output end of the first motor 404 is provided with a transmission gear one 405 engaged with the tooth plate 403; One end of the detonator positioning groove 402 is provided with a wire protection plate 407 rotationally connected with the charging pipeline main body 301, and the wire protection plate 407 is provided with an arc-shaped guide groove 408 at the bottom of one side facing the detonator positioning groove 402; The detonator mounting assembly 4 further includes an extrusion push block 409 slidingly connected on the side surface of the rubber compression head 607, and the extrusion push block 409 is elastically connected with the rubber compression head 607 through a spring one 4010; The detonator positioning groove 402 and the wire placement groove 304 are in the same vertical position, the detonator positioning groove 402 can slide into the inside of the charging pipeline main body 301 and move to the inside of the explosive storage cavity 9 to abut against the blasting explosive, the arc-shaped guide groove 408 is curved towards the wire placement groove 304, the extrusion push block 409 is arc-shaped on both sides, the extrusion push block 409 slides in the inside of the wire placement groove 304 in the middle part, and the extrusion push block 409 abuts against the elastic protruding block 305.

[0024] By the above scheme: through the design of the detonator positioning groove 402 and the electric telescopic rod 406, the electronic detonator 7 is conveniently installed, the electronic detonator 7 is received and guided by the detonator positioning groove 402, the electronic detonator 7 can be installed during the charging process of the blasting explosive, the safety is ensured, and the electronic detonator 7 is prevented from being inserted into the inside of the blasting explosive in advance, so that the blasting explosive is prevented from being damaged during the pipeline conveying process, and the safety is ensured; The arc-shaped guide groove 408 and the extrusion push block 409 are provided to guide and position the signal wire 8, the position of the top of the signal wire 8 entering the inside of the charging pipeline main body 301 is limited by the arc-shaped guide groove 408, so that the signal wire 8 is kept in the same vertical position with the limiting groove 608, the signal wire 8 can directly enter the inside of the limiting groove 608 when the rubber compression head 607 passes, the signal wire 8 is prevented from being scratched and extruded by the rubber compression head 607 to be damaged, the initiation effect of the electronic detonator 7 is affected, the extrusion push block 409 is used to push the signal wire 8 into the inside of the wire placement groove 304, and the signal wire 8 can be extruded to pass the elastic protruding block 305, so that the signal wire 8 is prevented from being blocked in the wire placement groove 304 by the elastic protruding block 305 and from being scratched when the rubber compression head 607 compresses the filler.

[0025] As Figures 5 to 8As shown, the output end of the electric telescopic rod 406 is provided with an elastic clamp block, and the elastic clamp block is in abutment with the electronic detonator 7, the electronic detonator 7 is a sharp head towards one end of the storage cavity 9, when the electric telescopic rod 406 pushes the signal wire 8 to penetrate into the inside of the blasting explosive, at this time, the elastic clamp block will clamp the tail end of the signal wire 8, when the detonator positioning groove 402 resets, the blasting explosive will be pulled into the middle part of the charging pipeline main body 301 through the elastic clamp block and the signal wire 8.

[0026] By adopting the above scheme: through the elastic clamp block arranged at the end of the electric telescopic rod 406, when the electronic detonator 7 is pushed to penetrate into the inside of the blasting explosive, the connection between the electronic detonator 7 and the signal wire 8 can be protected from being directly extruded, and when the electronic detonator 7 is pushed, the electronic detonator 7 can be extruded into the inside of the elastic clamp block, so that the electric telescopic rod 406 and the detonator positioning groove 402 can pull the blasting explosive to move horizontally through the elastic clamp block and the electronic detonator 7, thereby saving the power source for pushing the blasting explosive to move and reducing the cost.

[0027] As shown in the figure, Figures 7 to 10 The second motor 603 is fixedly connected in the shell 602, the rotating disc 604 is rotatably connected in the shell 602, the second motor 603 drives the rotating disc 604 to rotate through a plurality of transmission gears two, the rotating disc 604 is hingedly connected with the rotating rod 605 on one side, the end of the rotating rod 605 away from the rotating disc 604 is hingedly connected with the sliding rod 606, the sliding rod 606 is fixedly connected with the rubber pressing head 607, the limiting groove 608 is arranged on the side surface of the rubber pressing head 607 corresponding to the position of the wire placing groove 304, and the extrusion push block 409 is located in the limiting groove 608, and the spring two 609 is sleeved on the middle part of the sliding rod 606.

[0028] By adopting the above scheme: through the setting of the pressing assembly 6, through the reciprocating extrusion of the rubber pressing head 607 to the filler, the tightness of the filler can be guaranteed, and the effect of detonation is ensured, at the same time, the limiting groove 608 arranged on the side surface of the rubber pressing head 607 avoids scratching the signal wire 8 when the rubber pressing head 607 moves, and can limit the signal wire 8, so that the signal wire 8 can be pushed into the inside of the wire placing groove 304 by the extrusion push block 409, the integrity of the signal wire 8 is guaranteed, and the stable detonation of the electronic detonator 7 is ensured.

[0029] The working principle and use process of the present application are as follows: When charging, first, the blasting agent and the electronic detonator are respectively delivered to the storage cavity 9 and the detonator positioning groove 402 through the blasting agent delivery pipe 5 and the detonator delivery channel 401, respectively. At this time, the first motor 404 is started, and the first motor 404 drives the detonator positioning groove 402 to open the wire protection plate 407 to slide into the charging pipe main body 301 and finally into the storage cavity 9 to abut against the blasting agent. At this time, the electric telescopic rod 406 is started synchronously, and the electric telescopic rod 406 pushes the electronic detonator 7 to insert into the blasting agent. Then, the first motor 404 drives the detonator positioning groove 402 to reset. At this time, the detonator positioning groove 402 can pull the blasting agent into the charging pipe main body 301 through the electric telescopic rod 406 and the electronic detonator 7. When the blasting agent completely enters the charging pipe main body 301, the weight of the charging pipe main body 301 itself will pull the electronic detonator 7 from the elastic clamp block of the output end of the electric telescopic rod 406 and enter the bottom of the blasting hole; After the blasting agent drives the electronic detonator 7 to enter the bottom of the blasting hole, the mechanical arm 1 starts to lift, so that the bottom of the charging pipe main body 301 is higher than the top of the blasting agent by 10 cm. At this time, the hydraulic telescopic rod 601 is started to push the shell 602 to move to the bottom of the charging pipe main body 301. At the same time, the material delivery pipe 2 delivers the filler to the feeding cavity 306 and finally enters the blasting hole through the material delivery cavity 303. When the rubber compression head 607 at the end of the shell 602 passes through the wire protection plate 407, the wire protection plate 407 is pushed and turned to the vertical state. At this time, the arc-shaped guide groove 408 at the bottom of the wire protection plate 407 guides and limits the signal wire 8. Then, the rubber compression head 607 moves to abut against the signal wire 8. At this time, the signal wire 8 enters the limiting groove 608 on the side of the rubber compression head 607. At the same time, due to the guiding effect of the arc-shaped guide groove 408 on the signal wire 8, the signal wire 8 is aligned with the wire placement groove 304. At this time, the signal wire 8 entering the limiting groove 608 is extruded into the wire placement groove 304 by the extrusion block 409, and is extruded over the elastic protruding block 305 by the extrusion block 409, so that the signal wire 8 enters the wire placement groove 304 as a whole; After the rubber pressing head 607 moves to the bottom of the charging pipeline body 301, the bottom of the charging pipeline body 301 has been blocked by the filler delivered by the material delivery cavity 303, at this time the second motor 603 is started, the second motor 603 drives the rotating disc 604 to rotate through the transmission gear two, the rotating disc 604 pulls the sliding rod 606 to move back and forth through the rotating rod 605, so that the rubber pressing head 607 can extrude the filler at the bottom of the charging pipeline body 301 to make the filler compact, the gap generated by the compacted filler will be supplemented by the filler inside the material delivery cavity 303, at the same time the signal wire 8 is inside the wire placement groove 304, the rubber pressing head 607 that does not extrude the filler will not be damaged by scratching, after pressing the filler, the rubber pressing head 607 will be pulled back to the original position by the hydraulic telescopic rod 601; After that, the above operation is repeated in turn to place the subsequent 25% and 50% of the explosive charge, until the charging pipeline body 301 is completely removed from the blasting hole, at this time the charging pipeline body 301 is lifted until the signal wire 8 is completely separated from the bottom of the charging pipeline body 301, while ensuring the integrity of the wire, the explosive charge is installed, at the same time the filler is pressed and compacted to ensure that the explosive charge can have good blasting effect.

[0030] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rock-breaking method using a single-hole multi-stage plugging charge, comprising explosives and an electronic detonator (7), wherein one end of the electronic detonator (7) is provided with a signal wire (8), characterized in that, Includes the following steps; S1. Drill blasting holes according to the blasting point, and clean the blasting holes. Then divide the blasting holes into three sections, and load 25%, 25% and 50% of the total explosive charge in sequence from the bottom of the hole upwards. The total explosive charge shall not exceed 1.6 kg. S2. Put the bottom explosive charge into the hole. When putting the explosive charge in, insert the detonator (7) into the explosive charge and keep the signal wire (8) 30cm to 50cm above the ground. Then fill in 10cm of plugging filler and compact it. Then put in the middle explosive charge and repeat the operation until the top explosive charge is filled. Finally, fill the top explosive charge with filler that reaches the ground. S3. After confirming the safety of on-site personnel and equipment, activate the electronic detonator (7) to detonate the explosive. The detonation interval of the explosive from bottom to top is 17ms. At the same time as detonation, use artificial water curtain to reduce dust.

2. A device for using a single-hole multi-stage plugging charge, applied to a rock-breaking method using a single-hole multi-stage plugging charge according to claim 1, comprising a robotic arm (1) mounted on a charging vehicle, wherein material conveying pipes (2) are mounted on both sides of the robotic arm (1), characterized in that, Also includes: The explosive loading tube assembly (3), which is installed at one end of the robotic arm (1), is used to place the explosive charge and protect the signal wire (8). The detonator mounting assembly (4) is located on the side of the charge tube assembly (3) and is used to insert the electronic detonator (7) into the explosive charge. A clamping assembly (6) is disposed inside the drug delivery tube assembly (3) and is used to clamp the packing material; The drug loading tube assembly (3) includes a drug loading tube body (301) fixedly connected to the robotic arm (1), and the drug loading tube body (301) has a material conveying cavity (303) and a wire placement groove (304) inside. The detonator installation assembly (4) includes a detonator delivery channel (401) fixedly connected to the upper side of the main body of the charging pipeline (301) and a detonator positioning groove (402) movably connected inside the main body of the charging pipeline (301). An electric telescopic rod (406) is fixedly connected inside the detonator positioning groove (402). The clamping assembly (6) includes a hydraulic telescopic rod (601) fixedly connected to the top of the main body (301) of the drug delivery pipeline. The output end of the hydraulic telescopic rod (601) is fixedly connected to a housing (602). One end of the housing (602) is slidably connected to a slide rod (606) and a rubber clamping head (607).

3. The device for using a single-hole multi-stage plugging charging according to claim 2, characterized in that: A pair of material conveying pipes (2) and explosive conveying pipes (5) are fixedly connected to the outside of the main body of the charging pipeline (301). A feeding chamber (306) communicating with the material conveying pipes (2) is provided in the middle of the main body of the charging pipeline (301). At the same time, a storage chamber (9) is opened at the connection between the explosive conveying pipe (5) and the middle of the charging pipeline (301). The storage chamber (9) and the detonator installation assembly (4) are distributed on both sides of the main body of the charging pipeline (301).

4. The device for using a single-hole multi-stage plugging charging according to claim 3, characterized in that: The feeding chamber (306) is connected to the straight groove (302), and the straight groove (302) penetrates the bottom of the main body of the drug loading pipe (301). A pair of straight grooves (302) for sliding rubber compression heads (607) are provided inside the main body of the drug loading pipe (301). An elastic protrusion (305) is linearly distributed inside the wire placement groove (304), with one end fixedly connected to the inner wall of the wire placement groove (304).

5. The device for single-hole multi-stage plugging loading according to claim 2, characterized in that: The detonator delivery channel (401) is connected to the detonator positioning groove (402) and the main body of the charging pipeline (301). A toothed plate (403) is fixedly connected to the bottom of the detonator positioning groove (402). A first motor (404) is fixedly connected inside the main body of the charging pipeline (301) at the bottom of the detonator positioning groove (402). A transmission gear (405) that meshes with the toothed plate (403) is provided at the output end of the first motor (404).

6. The device for using a single-hole multi-stage plugging charging according to claim 2, characterized in that: One end of the detonator positioning groove (402) is provided with a wire protection plate (407) that is rotatably connected to the main body of the charging pipeline (301). An arc-shaped guide groove (408) is opened at the bottom of the wire protection plate (407) facing the detonator positioning groove (402). The detonator mounting assembly (4) further includes a compression pusher (409) slidably connected to the side of the rubber compression head (607), the compression pusher (409) being elastically connected to the rubber compression head (607) via a spring (4010).

7. The apparatus for using a single-hole multi-stage plugging loading method according to claim 6, characterized in that: The detonator positioning groove (402) and the wire placement groove (304) are at the same vertical position. The detonator positioning groove (402) can slide into the body of the charging pipe (301) and move into the storage chamber (9) to abut against the explosive. The arc-shaped guide groove (408) bends toward the wire placement groove (304). The upper and lower sides of the extrusion push block (409) are arc-shaped. The middle part of the extrusion push block (409) slides inside the wire placement groove (304), and the extrusion push block (409) abuts against the elastic protrusion (305).

8. The device for using a single-hole multi-stage plugging charging according to claim 2, characterized in that: The output end of the electric telescopic rod (406) is provided with an elastic clamp, and the elastic clamp is in contact with the electronic detonator (7). The end of the electronic detonator (7) facing the storage chamber (9) is pointed. When the electric telescopic rod (406) pushes the signal wire (8) to penetrate into the explosive, the elastic clamp will clamp the tail end of the signal wire (8). When the detonator positioning groove (402) is reset, the explosive will be pulled to the middle of the main body of the charging pipe (301) through the elastic clamp and the signal wire (8).

9. The device for using a single-hole multi-stage plugging charging according to claim 2, characterized in that: A second motor (603) is fixedly connected inside the housing (602), and a turntable (604) is rotatably connected inside the housing (602). The second motor (603) drives the turntable (604) to rotate through multiple transmission gears. A rotating rod (605) is hinged to one side of the turntable (604), and the end of the rotating rod (605) away from the turntable (604) is hinged to a sliding rod (606).

10. The apparatus for using a single-hole multi-stage plugging loading method according to claim 9, characterized in that: The slide rod (606) is fixedly connected to the rubber clamping head (607). The side of the rubber clamping head (607) is provided with a limiting groove (608) corresponding to the wire placement groove (304), and the extrusion push block (409) is located inside the limiting groove (608). A spring 2 (609) is sleeved in the middle of the slide rod (606).

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