CN111457805B - Explosive loading rod for drilling and blasting construction - Google Patents
Explosive loading rod for drilling and blasting construction Download PDFInfo
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- CN111457805B CN111457805B CN202010340480.1A CN202010340480A CN111457805B CN 111457805 B CN111457805 B CN 111457805B CN 202010340480 A CN202010340480 A CN 202010340480A CN 111457805 B CN111457805 B CN 111457805B
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- 239000002360 explosive Substances 0.000 title claims abstract description 142
- 238000005422 blasting Methods 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title description 11
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 10
- 239000000843 powder Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000003721 gunpowder Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drilling and blasting method explosive applying rod. The drilling and blasting method explosive applying rod comprises a front end explosive charging barrel, a tail end explosive charging barrel and a plurality of standard explosive charging barrels. The front end explosive charging barrel is installed at the deepest position of a drilled hole, the tail end explosive charging barrel is installed at the position of a port of the drilled hole, and the front end explosive charging barrel and the standard explosive charging barrels, the standard explosive charging barrels and the standard explosive charging barrels, and the standard explosive charging barrels and the tail end explosive charging barrel are connected through locking devices. The front end explosive charging barrel, the tail end explosive charging barrel and the standard explosive charging barrels each comprise an upper barrel body and a lower barrel body, and the upper barrel bodies and the lower barrel bodies are connected in a clamped manner through clamping fixing devices. Explosive installing grooves used for installing explosives are formed in the lower barrel bodies and are installed in the lower barrel bodies in a sliding manner, the positions of the explosive installing grooves in the lower barrel bodies can be adjusted through sliding limiting assemblies, and a plurality of explosive fixing devices are arranged in the explosive installing grooves to fix the positions of the explosives. The drilling and blasting method explosive applying rod has the beneficial effects of being reasonable in design and easy and convenient to use.
Description
Technical Field
The invention belongs to the technical field of blasting construction tools, and particularly relates to a tool powder rod for applying a tool by a drilling and blasting method.
Background
In recent years, with the rapid development of domestic economy, the iron and highway industry in China is rapidly developed, and mountains are numerous in northwest areas of China, so that tunnels are required to be arranged to penetrate through the mountains in the construction process of the iron and highway, and a smooth blasting means is often adopted in the arrangement process of the tunnels; the drilling and blasting method is used as a main technical means in smooth blasting, and comprises the steps of properly arranging blast holes at certain intervals on the periphery of an excavation limit, and blasting by using a method for controlling resistance lines and dosage under the condition that a lateral blank surface exists to form a smooth and flat profile surface; during the construction process of the drilling and blasting method, gunpowder is required to be filled in a blast hole, a mountain is blasted by using the instantaneous explosive force of the gunpowder, and a tunnel is opened;
in the traditional drilling and blasting method construction process, powder explosive cartridges are often used as explosives, although the powder explosive cartridges are simple to use and do not need special equipment for installing gunpowder, the explosive capability is limited in the use process, the blasting requirement cannot be well met, the explosive amount can only be increased, the danger coefficient is increased while the explosive amount is increased, in the drilling and blasting method construction process, non-coupled explosive charging is needed, namely, the explosive cartridges are required to be uniformly distributed, and the explosive cartridges are spaced at a certain distance, so that the smooth blasting effect can be exerted, and the distance between the explosive cartridges cannot be well controlled by a traditional charging rod; in modern construction, people gradually use explosives with stronger blasting capacity, better blasting directionality and higher safety to replace traditional powdery explosive sticks, and deeper blast holes need to be drilled in the drilling and blasting construction along with the increase of the tunnel excavation difficulty coefficient, the rock stratum thickness and the tunnel diameter, and the included angle between the blast holes and the rock stratum is correspondingly changed due to the difference of rock stratum and lithology;
therefore, in the drilling and blasting method application process, the traditional explosive loading rod cannot meet the requirements of the depth and the explosive type of the modern blast hole, and therefore a novel explosive loading rod is needed, and the requirements of the depth and the explosive type of the modern blast hole can be met simultaneously.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a tool loading rod applied by a drilling and blasting method, which comprises a front-end loading cylinder, a tail-end loading cylinder and a plurality of standard loading cylinders, wherein the front-end loading cylinder is arranged at the deepest part of a drilled hole, the tail-end loading cylinder is arranged at the hole part of the drilled hole, the front-end loading cylinder is connected with the standard loading cylinders, the standard loading cylinders are connected with the standard loading cylinders, and the tail-end loading cylinders are connected by adopting locking devices.
In order to achieve the purpose, the invention adopts the technical scheme that:
a drilling and blasting method applied explosive rod comprises a front end cartridge, a tail end cartridge and a plurality of standard cartridges, wherein the front end cartridge is arranged at the deepest part of a drilled hole, the tail end cartridge is arranged at the position of the drilled hole, and the front end cartridge and the standard cartridges, the standard cartridges and the standard cartridges, and the standard cartridges and the tail end cartridges are connected by adopting a locking device;
the front end cartridge, the tail end cartridge and the standard cartridge all comprise an upper barrel and a lower barrel, and the upper barrel is connected with the lower barrel in a clamping manner through a clamping and fixing device; an explosive mounting groove is arranged on the inner side of the lower barrel body, the explosive mounting groove can be slidably mounted in the lower barrel body, the position of the explosive mounting groove in the lower barrel body can be adjusted through a sliding limiting assembly, and a plurality of explosive fixing devices are arranged in the explosive mounting groove and used for fixing the position of an explosive;
the left and right sides of lower barrel upper end mouth portion still be provided with wire mounting groove and scale of symmetry, the front end of wire mounting groove is provided with the wire access hole that is used for inserting the wire, the scale includes lateral wall scale and horizontal scale, the lateral wall scale sets up on the lateral wall of the last port of barrel down, horizontal scale sets up on the upper end top surface of wire mounting groove lateral wall.
Furthermore, the locking device comprises an upper barrel locking component and a lower barrel locking component which have the same structure, wherein the upper barrel locking component and the lower barrel locking component respectively comprise a clamping groove and a locking bulge which are arranged on the rear end surfaces of the upper barrel and the lower barrel, and a clamping bulge and a locking groove which are arranged on the front end surfaces of the upper barrel and the lower barrel; the clamping groove on the previous lower barrel is matched with the clamping protrusion on the next lower barrel for use, and the locking protrusion on the previous lower barrel is matched with the locking groove on the next lower barrel for use.
Furthermore, the locking protrusion comprises a locking panel, a lock tooth panel and a first spring, the locking panel is an outer side panel of the locking protrusion, a plurality of lock tooth telescopic holes are formed in the locking panel, the lock tooth panel is installed in a cavity inside the locking protrusion, a plurality of first lock teeth matched with the lock tooth telescopic holes are arranged on the lock tooth panel, the position of each first lock tooth corresponds to the position of each lock tooth telescopic hole during installation, and the first spring is installed between the cavity inside the locking protrusion and the lock tooth panel; the locking groove comprises a second locking tooth matched with the first locking tooth, limiting bulges and a second spring, the second locking tooth is arranged at the bottom of the locking groove, the limiting bulges are symmetrically arranged at two sides of the buckling locking part of the locking groove, the back of the limiting bulges is connected with the second spring, and the limiting bulges are reset by the elasticity of the second spring.
Further, the locking device comprises an upper cylinder locking assembly and a lower cylinder locking assembly which have the same structure; the upper barrel locking assembly and the lower barrel locking assembly respectively comprise locking bulges and sealing slots which are equidistantly arranged on the rear end surfaces of the upper barrel and the lower barrel, and locking grooves and sealing bulges which are arranged on the front end surfaces of the upper barrel and the lower barrel; the locking bulge on the previous upper cylinder is matched and clamped with the locking groove on the next upper cylinder, and the sealing slot on the previous upper cylinder is hermetically connected with the sealing bulge on the next upper cylinder; the locking bulge on the front lower cylinder body is matched and clamped with the locking groove on the rear lower cylinder body, and the sealing slot on the front lower cylinder body is hermetically connected with the sealing bulge on the rear lower cylinder body; the locking bulges are all slidably mounted on the end faces of the upper barrel body or the lower barrel body correspondingly arranged.
Furthermore, the clamping and fixing device comprises an upper barrel clamping groove and an upper barrel clamping protrusion which are symmetrically arranged at the lower end opening part of the upper barrel, and a lower barrel clamping groove and a lower barrel clamping protrusion which are symmetrically arranged at the upper end opening part of the lower barrel, wherein the upper barrel clamping groove is matched with the lower barrel clamping protrusion for use, and the upper barrel clamping protrusion is matched with the lower barrel clamping groove for use; and a plurality of first threaded holes corresponding to the groove positions of the clamping grooves of the upper barrel are formed in the outer side surface of the upper barrel, a plurality of second threaded holes are formed in the clamping protrusions of the lower barrel, and the second threaded holes are matched with the first threaded holes for use.
Furthermore, the sliding limiting assembly comprises a first sliding rail, a second sliding rail, a first limiting screw hole, a first sliding bulge, a second sliding bulge and a second limiting screw hole, the first sliding rail is symmetrically arranged on the left side and the right side of the inner side of the lower barrel and is matched with the first sliding bulge for use, and the first sliding bulge is symmetrically arranged on the left side and the right side of the outer side of the explosive mounting groove; the explosive mounting groove is arranged on the explosive mounting groove, and the explosive mounting groove is arranged on the explosive mounting groove.
Furthermore, the inner side of the lower port part of the upper cylinder is provided with an upper cylinder limiting baffle plate for limiting two ends of a first arched isolating plate arranged on the inner side of the upper cylinder; the inner side of the upper end opening part of the explosive mounting groove is provided with a lower barrel limiting blocking piece which limits two ends of a second arched isolation plate arranged on the inner side of the explosive mounting groove.
Furthermore, the explosive fixing device comprises a bandage component and a connecting ring, the bandage component is arranged on the left lower barrel limiting baffle, the connecting ring is hinged on the right lower barrel limiting baffle, the bandage component is arranged in the bandage mounting groove and comprises a bandage, a winding shaft, a spring and a connecting hook, the bandage is wound in the middle of the winding shaft, the free end of the bandage is connected with the connecting hook, the spring is sleeved at two ends of the winding shaft, one end of the spring is connected with the side wall in the middle of the winding shaft, and the other end of the spring is connected with the side wall of the bandage mounting groove; the connecting ring is a U-shaped connecting ring and is matched with the connecting hook for use.
Furthermore, the front end of the lower barrel of the front-end cartridge case is also provided with a base, the front end of the base is provided with a conical bulge for cleaning the bottom of the drilled hole, and the base is also provided with a barrel-shaped protective wall.
Furthermore, the tail end of the lower barrel body of the tail end cartridge case is provided with an end cover, a lead traction opening penetrating through the end cover is formed in the end cover, and the upper portion of the end cover is provided with an end protective barrel.
The invention has the beneficial effects that: the invention discloses a tool chemical rod for explosive application by a drilling and blasting method, which has the following advantages compared with the prior art:
1. the designed medicine charging rod consists of a front-end medicine charging barrel, a tail-end medicine charging barrel and a plurality of standard medicine charging barrels, when the medicine charging rod is used, the front-end medicine charging barrel is arranged at the deepest part of a drill hole, the tail-end medicine charging barrel is arranged at the opening of the drill hole, the front-end medicine charging barrel and the standard medicine charging barrels are connected through a locking device, constructors can select the number of the standard medicine charging barrels according to the length of the drill hole and actual requirements, the situations that the medicine charging rod is too long and the length is not enough can be effectively avoided, the medicine charging barrels are connected through clamping, and the first locking teeth and the second locking teeth are locked, so that the medicine charging rod is simple and convenient to use;
2. the charging sleeve is designed into the upper barrel body and the lower barrel body, so that when charging, a blasting worker can clearly see the internal condition in the charging rod, and when charging is completed, the upper barrel body is only required to be downwards buckled and pressed on the lower barrel body and is connected by a proper bolt to complete the connection of the upper barrel body and the lower barrel body, and the use is simple and flexible; the explosive mounting groove is movably mounted in the lower barrel, when the explosive mounting groove is used, the distance between the explosive blocks can be accurately adjusted by referring to the graduated scales on the two sides, the effectiveness of the explosive can be effectively ensured, and the design is reasonable;
3. be provided with a plurality of explosive fixing device in the explosive mounting groove and fix the position of explosive, only need through the hand pine pulling hookup to be connected hookup and go-between, can realize fixed convenient to use to the explosive.
Drawings
FIG. 1 is a schematic view of the lower body of the front end cartridge of the present invention.
FIG. 2 is a left side view of the lower barrel of the front end cartridge of the present invention.
Fig. 3 is a rear view of the upper cartridge of the present invention.
Fig. 4 is a perspective view of the upper barrel of the present invention from a rear perspective.
FIG. 5 is an isometric view of an upper barrel of the present invention from a front perspective.
FIG. 6 is a front view of the lower barrel of a standard cartridge of the present invention with an explosive mounting slot mounted therein.
Figure 7 is a front view of the lower barrel of a standard cartridge of the present invention.
FIG. 8 is an isometric view of a rear view of a cartridge body of a standard loading cartridge of the present invention.
Figure 9 is an isometric view of a front view of a lower barrel of a standard loading cartridge of the present invention.
Fig. 10 is a front view of the explosive installation groove of the present invention.
FIG. 11 is an isometric view of a rear view of the explosive mounting slot of the present invention.
FIG. 12 is an isometric view of a front view angle of the explosive mounting slot of the present invention.
Fig. 13 is a front view of the bandage assembly.
Fig. 14 is a left side view of the bandage assembly.
Fig. 15 is a schematic view of the connection ring.
Fig. 16 is a schematic view of the lower barrel of the end-loaded cartridge.
Fig. 17 is a structural diagram of the locking projection of the present invention.
Fig. 18 is a structural view of the locking projection when the tooth plate is not mounted according to the present invention.
Fig. 19 is a schematic structural view of a lock tooth panel according to the present invention.
Fig. 20 is a cross-sectional view of the side of the locking projection of the present invention.
Fig. 21 is a schematic structural view of a first lock tooth of the present invention.
Fig. 22 is a schematic structural view of the locking groove of the present invention.
Fig. 23 is a schematic structural view of a lower cylinder of a front end cartridge according to embodiment 1 of the present invention.
Fig. 24 is a left side view of the lower body of the front end cartridge of example 1 of the present invention.
Fig. 25 is a schematic structural view of the front end face of the lower cylinder in embodiment 1 of the present invention.
Fig. 26 is a schematic structural view of the rear end face of the lower cylinder in embodiment 1 of the present invention.
FIG. 27 is a schematic view of the locking projection and compression groove connection of the present invention.
Fig. 28 is a schematic structural view of the lower barrel of the end cartridge of example 1 of the present invention.
In the figure: 1. the upper barrel body, 11, a first arch-shaped isolation plate, 12, an upper barrel body limiting stop piece, 13, a first threaded hole, 14, a clamping groove, 15, a clamping protrusion, 16, an upper barrel body clamping groove, 17, an upper barrel body clamping protrusion, 2, a lower barrel body, 20, a lower barrel body clamping protrusion, 21, a wire installation groove, 22, a graduated scale, 221, a side wall graduated scale, 222, a horizontal graduated scale, 23, a first sliding rail, 25, a second sliding rail, 251, a first limiting threaded hole, 26, a lower barrel body clamping groove, 261, a second threaded hole, 27, a base, 271, a protective wall, 272, a conical protrusion, 28, an end cover, 281, a wire traction opening, 282, an end protective barrel, 3, an explosive installation groove, 31, a first sliding protrusion, 32, a second sliding protrusion, 321, a second limiting threaded hole, 33, a second arch-shaped isolation plate, 34, a lower barrel body limiting stop piece, 35, 351. the locking device comprises a winding shaft, 352 a spring, 353 a connecting hook, 354 a connecting ring, 4 a locking protrusion, 41 a locking panel, 411 a locking tooth telescopic hole, 42 a locking tooth panel, 421 a first locking tooth, 43 a first spring, 44 a locking groove, 441 a second locking tooth, 442 a limiting protrusion, 443 a second spring, 5 a locking protrusion, 51 a first locking tooth, 52 a tightening groove, 521 a second locking tooth, 53 a sealing protrusion, 54 a sealing slot and 55 a locking protrusion mounting sliding groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
Example 1
Referring to fig. 1-22, a explosive handling rod for explosive drilling and blasting construction comprises a front-end cartridge, a tail-end cartridge and a plurality of standard cartridges, wherein the front-end cartridge is arranged at the deepest part of a drilled hole during construction, the tail-end cartridge is arranged at the opening of the drilled hole, the standard cartridges are arranged between the front-end cartridge and the tail-end cartridge, and the front-end cartridge and the standard cartridges, the standard cartridges and the standard cartridges, and the standard cartridges and the tail-end cartridge are connected by adopting locking devices; the front end cartridge, the tail end cartridge and the standard cartridge all comprise an upper barrel body 1 and a lower barrel body 2, and the upper barrel body 1 is connected with the lower barrel body 2 in a clamping manner through a clamping and fixing device; an explosive mounting groove 3 is mounted on the inner side of the lower barrel 2 and used for mounting explosives, the explosive mounting groove 3 can be slidably mounted in the lower barrel 2, the position of the explosive mounting groove 3 in the lower barrel 2 can be adjusted through a sliding limiting assembly, and a plurality of explosive fixing devices are arranged in the explosive mounting groove 3 and used for fixing the position of the explosives in the explosive mounting groove 3;
the left side and the right side of the upper end opening of the lower barrel body 2 are symmetrically provided with a wire installation groove 21 and a graduated scale 22, the front end of the wire installation groove 21 is provided with a wire access hole 211 for accessing a wire, the wire on each explosive block is connected into the wire installation groove 21 through the wire access hole 211, the graduated scale 22 comprises a side wall graduated scale 221 and a horizontal graduated scale 222, the side wall graduated scale 221 is arranged on the side wall of the upper end opening of the lower barrel body 2 and used for reading when the position of the explosive installation groove is adjusted, the horizontal graduated scale 222 is arranged on the top surface of the upper end of the side wall of the wire installation groove 21 and used for reading the position of the explosive when the explosive blocks in the explosive installation groove 3 are installed, and the explosive blocks are conveniently installed according to the specified interval.
The locking device comprises an upper barrel locking component and a lower barrel locking component which have the same structure, wherein the upper barrel locking component and the lower barrel locking component respectively comprise a clamping groove 14 and a locking bulge 4 which are arranged on the rear end surfaces of an upper barrel 1 and a lower barrel 2, and a clamping bulge 15 and a locking groove 44 which are arranged on the front end surfaces of the upper barrel 1 and the lower barrel 2, the clamping groove 14 on the previous upper barrel is matched with the clamping bulge 15 on the next upper barrel, the locking bulge 4 on the previous upper barrel is matched with the locking groove 44 on the next upper barrel, therefore, when in use, in the use process, when the locking protrusion 4 of the front upper cylinder 1 is clamped in the corresponding locking groove 44 of the rear upper cylinder 1, the clamping protrusion 15 arranged on the upper cylinder body is just completely clamped into the clamping groove 14, so that the two adjacent upper cylinder bodies 1 are connected; the clamping groove 14 on the previous lower barrel is matched with the clamping protrusion 15 on the next lower barrel for use, the locking protrusion 4 on the previous lower barrel is matched with the locking groove 44 on the next lower barrel for use, wherein the locking protrusion 4 is arranged on the outer side of the end face where the clamping groove 14 is located, and the clamping protrusion 15 is arranged on the inner side of the end face where the locking groove 44 is located;
the locking protrusion 4 comprises a locking panel 41, a lock tooth panel 42 and a first spring 43, the locking panel 41 is an outer side panel of the locking protrusion 4, the locking panel 41 is provided with a plurality of lock tooth retractable holes 411, the lock tooth panel 42 is installed in a cavity inside the locking protrusion 4, the lock tooth panel 42 is provided with a plurality of first lock teeth 421 used in cooperation with the lock tooth retractable holes 411, the positions of the first lock teeth 421 correspond to the positions of the lock tooth retractable holes 411 during installation, the first spring 43 is installed between the cavity inside the locking protrusion 4 and the lock tooth panel 42, when the first lock teeth 421 are subjected to external pressure, the first spring 43 is compressed, the retractable lock teeth retract inwards along the lock tooth retractable holes 411, and when the pressure disappears, the first spring 43 recovers deformation, and the first lock teeth 421 pop outwards along the lock tooth retractable holes 411; the locking groove 44 comprises a second locking tooth 441, a limiting protrusion 442 and a second spring 443, the second locking tooth 441 is used in cooperation with the first locking tooth 421, the second locking tooth 441 is arranged at the bottom of the locking groove 44, the limiting protrusion 442 is symmetrically arranged at two sides of the position where the locking groove 44 is buckled with the locking part, and the back surface of the limiting protrusion is connected with the second spring 443, so that the limiting protrusion 442 is reset by the elastic force of the second spring 443; when two adjacent upper cylinder 1 or lower cylinder 2 are to be connected, that is, when the locking protrusion 4 is inserted into the locking groove 44, the limiting protrusions 442 at both sides of the locking groove 44 receive pressure from the head of the locking groove 44, the limiting protrusions 442 retract to both sides, the second spring 443 is compressed, at the same time, the first locking tooth 421 receives pressure from the second locking tooth 441, the first spring 43 contracts inwardly along the locking tooth expansion hole 411 and is compressed, when the locking protrusion 4 is completely clamped into the locking groove 44, the pressure received by the limiting protrusions 442 disappears, the second spring 443 recovers its shape, the limiting protrusion 442 springs outwardly, at the same time the pressure received by the first locking tooth 421 disappears, the first spring 43 recovers its shape, the first locking tooth 421 springs outwardly along the locking tooth expansion hole 411, the first locking tooth 421 is completely clamped with the second locking tooth 441, and since the contact surface of the first locking tooth 421 and the second locking tooth 441 is at right angle, namely, the first locking tooth 421 and the second locking tooth 441 are locked, so that the purpose of connecting two adjacent upper cylinder bodies 1 or lower cylinder bodies is achieved.
The clamping and fixing device comprises an upper barrel clamping groove 16 and an upper barrel clamping protrusion 17 which are symmetrically arranged at the lower end opening part of the upper barrel 1, and a lower barrel clamping groove 26 and a lower barrel clamping protrusion 20 which are symmetrically arranged at the upper end opening part of the lower barrel 2, wherein the upper barrel clamping groove 16 is matched with the lower barrel clamping protrusion 20 for use, and the upper barrel clamping protrusion 17 is matched with the lower barrel clamping groove 26 for use, namely when the lower barrel clamping protrusion 20 is clamped into the upper barrel clamping groove 16 and the upper barrel clamping protrusion 17 is clamped into the lower barrel clamping groove 26, the clamping connection of the upper barrel 1 and the lower barrel 2 is realized; and be provided with a plurality of first screw holes 13 that correspond with the groove position of last barrel block recess 16 on the outside surface of last barrel 1, be provided with a plurality of second screw holes 261 on the block arch 20 of lower barrel, second screw hole 261 uses with first screw hole 13 cooperation, promptly when the block with last barrel 1 and lower barrel 2 is connected the back, utilize the bolt to be connected above-mentioned first screw hole 13 with corresponding second screw hole 261, further fix the connection of last barrel 1 and lower barrel 2, make its wholeness better, convenient to use.
The sliding limit component comprises a first sliding rail 23 symmetrically arranged on the inner side of the lower barrel 2, a second sliding rail 25 arranged at the center of the bottom end of the inner side of the lower barrel 2, a first limit screw hole 251 arranged on the second sliding rail 25, a first sliding bulge 31 arranged on the explosive mounting groove 3 and matched with the first sliding rail 23, a second sliding bulge 32 matched with the second sliding rail 25, and a second limit screw hole 321 arranged at the upper end of the second sliding bulge 32, wherein the second limit screw hole 321 penetrates through the bottom wall of the explosive mounting groove 3 and is matched with the first limit screw hole 251 for use, when in use, the first sliding rail 23 is clamped into the first sliding bulge 31, and the second sliding rail 25 is clamped into the second sliding bulge 32, namely, the explosive mounting groove 3 is installed in the lower barrel 2 in a sliding manner, and when the explosive mounting groove 3 slides in the lower barrel 2, according to needs, the first limit screw hole 251 and the corresponding second limit screw hole 321 are connected through bolts, namely limit fixing of the explosive mounting groove 3 is achieved, and the purpose of limiting the position of the explosive mounting groove 3 according to needs in the using process is met.
An upper barrel limiting baffle plate 12 is arranged on the inner side of the lower port part of the upper barrel 1 and used for limiting two ends of a first arched isolating plate 11 arranged on the inner side of the upper barrel 1; a lower barrel limiting baffle 34 is arranged on the inner side of the upper port part of the explosive mounting groove 3, two ends of a second arched isolating plate 33 arranged on the inner side of the explosive mounting groove 3 are limited, and the positions of the first arched isolating plate 11 and the second arched isolating plate 33 are respectively limited by the upper barrel limiting baffle 12 and the lower barrel limiting baffle 34;
the first arched isolating plate 11 and the second arched isolating plate 33 are both made of waterproof heat-insulating materials, and the influence of water inlet in the explosive charging rod and temperature change in a drill hole on explosive effectiveness is avoided.
The explosive fixing device comprises a bandage assembly and a connecting ring 354, the bandage assembly is arranged on the left lower barrel limiting blocking piece 34, the connecting ring 354 is hinged on the right lower barrel limiting blocking piece 34, the bandage assembly is arranged in a bandage installation groove and comprises a bandage 35, a winding shaft 351, a spring 352 and a connecting hook 353, the bandage 35 is wound in the middle of the winding shaft 351, the free end of the bandage 35 is connected with the connecting hook 353, the spring 352 is sleeved at two ends of the winding shaft 351, one end of the spring 352 is connected with the side wall in the middle of the winding shaft 351, the other end of the spring 352 is connected with the side wall of the bandage installation groove, when the bandage fixing device is used, the connecting hook 353 is manually pulled to pull out the bandage 35, so that the winding shaft 351 is driven to rotate, the spring 352 arranged at two sides of the winding shaft 351 is compressed, when the connecting hook 353 is connected with the connecting ring 354, the explosive block is fixed, and after the connecting hook 353 is disconnected with the connecting ring 354, the spring 352 is reset and the bandage 35 is pulled back by the reverse rotation of the spool 351; the attachment ring 354 is a U-shaped attachment ring that cooperates with the attachment hooks 353.
The tail end of the lower barrel body 2 of the front end cartridge is also provided with a base 27, the tail end of the base 27 is provided with a conical bulge 272, when in use, when the base 27 is inserted into a drilled hole, the bottom of the drilled hole is cleaned by the conical protrusion 272, the base 27 is further provided with a barrel-shaped protective wall 271, the upper tunnel face at the bottom of the drilled hole is protected by the protective wall 271, the protective wall 271 is provided with a clamping groove 14 and a locking protrusion 4, the locking protrusion 4 is matched with the locking groove 44 arranged on the front end surface of the upper cylinder 1, the clamping groove 14 is matched with a clamping bulge 15 arranged on the front end surface of the upper barrel 1 for use, namely, in the using process, when the clamping groove 14 on the protecting wall 271 is completely clamped with the clamping protrusion 15 on the front end surface of the other upper barrel 1 and the locking protrusion 4 is completely inserted and locked with the locking groove 44 on the front end surface of the other upper barrel 1, the connection of the lower barrel 2 of the front-end cartridge with the other upper barrel 1 is realized.
The front end of the lower barrel 2 of the tail end cartridge is provided with an end cover 28, the end cover 28 is provided with a lead traction port 281 penetrating through the end cover, leads of all mounted explosive blocks are uniformly connected and led out by the lead traction port 281 so as to facilitate the ignition of a controller, the upper part of the end cover 28 is provided with an end protective barrel 282, the end protective barrel 282 is provided with a locking groove 44 and a clamping protrusion 15, the clamping protrusion 15 is matched with a clamping groove 14 arranged on the rear end face of the upper barrel 1 for use, the locking groove 44 is matched with a locking protrusion 4 arranged on the rear end face of the upper barrel 1 for use, namely, when the clamping protrusion 15 on the end protective barrel 282 is completely clamped with the clamping groove 14 arranged on the rear end face of the other upper barrel 1 and the locking groove 44 is completely clamped with the locking protrusion 4 arranged on the rear end face of the other upper barrel 1 in the use process, i.e. to achieve the connection of the lower cylinder 2 of the end cartridge with the other upper cylinder 1.
The working principle and the using process of the invention are as follows:
(1) firstly, measuring the depth of a drilled hole, and calculating the number of required standard cartridge cases according to the design of the depth of the drilled hole; then calculating the distance between explosive blocks and the charging quantity according to the blasting requirement and the rock grade;
(2) the powder charging is carried out in the lower barrel 2 of the front end powder charging barrel firstly, and the method comprises the following steps:
firstly, placing an explosive cartridge in an explosive mounting groove 3, fixing the position of an explosive block in the explosive mounting groove 3 by using an explosive fixing device, and introducing a lead into a lead mounting groove 21 from a lead access hole 211;
secondly, installing a second explosive block according to the calculated distance between the explosive blocks and fixing the second explosive block (whether a lower barrel body 2 of a standard explosive barrel needs to be installed or not is determined according to specific requirements in the process), sequentially installing the standard explosive barrel, ensuring that a corresponding locking bulge 4 is completely clamped and locked with a locking groove 44 when the standard explosive barrel is installed, ensuring that a lower barrel body clamping bulge 29 is just clamped into a lower barrel body clamping groove 24, and simultaneously ensuring that an upper barrel body clamping bulge 15 is just clamped into an upper barrel body clamping groove 14;
thirdly, installing a tail end cartridge case, leading out a lead in the lead installation groove 21 from the lead traction opening 281, and connecting a controller (when the adjacent lower barrel body 2, the adjacent upper barrel body 1, the upper barrel body 1 and the lower barrel body 2 are connected, a proper amount of bolts are selected to fix the connection parts of the adjacent lower barrel body, the adjacent upper barrel body 1 and the upper barrel body 1 as required);
(3) after the charging is finished, the charging rod is carefully placed into the drilling hole, and the position of the tail end charging barrel is fixed to prepare for detonation.
Example 2
Referring to fig. 23-28, different from embodiment 1, in order to achieve better connection between the front-end cartridge and the standard cartridge, between the standard cartridge and the standard cartridge, and between the standard cartridge and the end cartridge, and prevent loosening, the locking device may be designed as shown in fig. 23-28 of the present specification, specifically: the locking device comprises an upper cylinder locking component and a lower cylinder locking component which have the same structure; the upper barrel locking assembly and the lower barrel locking assembly respectively comprise locking bulges 5 and sealing slots 54 which are equidistantly arranged on the rear end surfaces of the upper barrel 1 and the lower barrel 2, and locking grooves 52 and sealing bulges 53 which are arranged on the front end surfaces of the upper barrel 1 and the lower barrel 2; when the locking protrusion 5 on the previous upper barrel 1 is matched and clamped with the locking groove 52 on the next upper barrel, and the sealing slot 54 on the previous upper barrel is in sealing connection with the sealing protrusion 53 on the next upper barrel, in the use process, the locking protrusion 5 on the previous upper barrel 1 is matched and tightly clamped with the locking groove 52 on the next upper barrel, and simultaneously the sealing slot 54 on the previous upper barrel is in sealing connection with the sealing protrusion 53 on the next upper barrel, the connection of two adjacent upper barrels 1 is realized; the locking protrusion 5 on the previous lower barrel is matched and clamped with the locking groove 52 on the next lower barrel, and the sealing slot 54 on the previous lower barrel is hermetically connected with the sealing protrusion 53 on the next lower barrel, i.e. when the locking protrusion 5 on the previous lower barrel is matched and tightly clamped with the locking groove 52 on the next lower barrel and the sealing slot 54 on the previous lower barrel is hermetically connected with the sealing protrusion 53 on the next lower barrel in the use process, the two adjacent lower barrels 2 are connected;
the locking bulges 5 are all slidably arranged on the end surfaces of the upper cylinder body or the lower cylinder body which are correspondingly arranged; the end surfaces of the upper barrel body or the lower barrel body, on which the locking protrusions 5 are installed, are provided with locking protrusion installation sliding grooves 55, the locking protrusions 5 are installed in the locking protrusion installation sliding grooves 55, and the locking protrusions 5 can slide along the axis direction or slide away from the axis direction in the locking protrusion installation sliding grooves 55; the locking protrusion 5 is provided with a first locking latch 51, and the first locking latch 51 is matched with a second locking latch 521 arranged in the tightening groove 52; during installation, an installer can manually shift the locking protrusion 5 to move in the locking protrusion installation chute 54 along the axis direction, when the two adjacent lower cylinders 2 or upper cylinders are completely butted (the standard of complete butting is that the sealing protrusion 53 is completely inserted into the sealing slot 54), then manually shift the locking protrusion 5 again to move in the locking protrusion installation chute 55 along the direction away from the axis, so that the locking protrusion 5 is completely clamped into the tightening groove 52, the first locking latch 51 is completely clamped with the second locking latch 521, and the first locking latch 51 and the second locking latch 521 are clamped, that is, the two adjacent lower cylinders 2 or upper cylinders 1 are connected;
the front end of the lower barrel 2 of the front end cartridge case is also provided with a base 27, the front end of the base 27 is provided with a bulge 272 for cleaning the bottom of a drilled hole, the base 27 is also provided with a barrel-shaped protection wall 271, the protection wall 271 is provided with a sealing slot 54 and a locking bulge 5, the locking bulge 5 is matched with a locking groove 52 arranged on the front end surface of the upper barrel 1 for use, and the sealing slot 54 is matched with a sealing bulge 53 arranged on the front end surface of the upper barrel 1 for use, namely in the using process, when the sealing slot 54 arranged on the protection wall 271 is completely and hermetically inserted with the sealing bulge 53 arranged on the front end surface of the other upper barrel 1 and the locking bulge 5 is completely clamped and locked with the locking groove 52 arranged on the front end surface of the other upper barrel 1, the connection of the lower barrel 2 of the front end cartridge case and the upper barrel 1 is realized.
The tail end of the lower barrel 2 of terminal cartridge case be provided with end cover 28, set up the wire that runs through the end cover on end cover 28 and pull mouth 281, and be provided with tip on the upper portion of end cover 28 and protect a 282, the tip protects and is provided with lock recess 52, sealed protruding 53 on the 282, sealed protruding 53 uses with the cooperation of the sealed slot 54 that sets up on last barrel 1 rear end face, lock recess 52 uses with the protruding 5 cooperation of lock that sets up on last barrel 1 rear end face, promptly in the use, when lock recess 52 that sets up on protecting the wall 271 with set up on another barrel 1 rear end face lock the lock totally with the protruding 5 complete joint of lock that sets up on barrel 1 rear end face, and sealed protruding 53 and set up on another barrel 1 rear end face when the complete joint of sealed slot 54, realize the lower barrel 2 of terminal cartridge case promptly and be connected of last barrel 1.
The sealing protrusion 53 and the sealing slot 54 are arranged to enable the sealing protrusion 53 and the sealing slot 54 to be in tight butt joint, so that the interior of the explosive loading rod is isolated from the external environment, and the explosive loading rod is prevented from being affected by water in a drill hole penetrating into the explosive loading rod when the explosive loading rod extends into the drill hole;
in this embodiment, the locking projection 5 is provided so as not to interfere with the sliding movement of the explosive charge installation groove 3 when engaged in the tightening recess 52.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The explosive rod for the explosive application by the drilling and blasting method is characterized by comprising a front-end explosive cartridge, a tail-end explosive cartridge and a plurality of standard explosive cartridges, wherein the front-end explosive cartridge is arranged at the deepest part of a drilled hole, the tail-end explosive cartridge is arranged at the opening of the drilled hole, and the front-end explosive cartridge and the standard explosive cartridge, the standard explosive cartridge and the standard explosive cartridge, and the standard explosive cartridge and the tail-end explosive cartridge are connected by adopting locking devices;
the front end cartridge, the tail end cartridge and the standard cartridge comprise an upper barrel body (1) and a lower barrel body (2), and the upper barrel body (1) is connected with the lower barrel body (2) in a clamping mode through a clamping and fixing device in a clamping mode; an explosive mounting groove (3) is mounted on the inner side of the lower barrel (2), the explosive mounting groove (3) is slidably mounted in the lower barrel (2), the position of the explosive mounting groove (3) in the lower barrel (2) can be adjusted through a sliding limiting assembly, and a plurality of explosive fixing devices are arranged in the explosive mounting groove (3) to fix the position of the explosive;
the left side and the right side of the upper end opening of the lower barrel (2) are symmetrically provided with a wire installation groove (21) and a graduated scale (22), the front end of the wire installation groove (21) is provided with a wire access hole (211) for accessing a wire, the graduated scale (22) comprises a side wall graduated scale (221) and a horizontal graduated scale (222), the side wall graduated scale (221) is arranged on the side wall of the upper end opening of the lower barrel (2), and the horizontal graduated scale (222) is arranged on the top surface of the upper end of the side wall of the wire installation groove (21);
the locking device comprises an upper barrel locking assembly and a lower barrel locking assembly which are identical in structure, wherein the upper barrel locking assembly and the lower barrel locking assembly respectively comprise a clamping groove (14) and a locking protrusion (4) which are arranged on the rear end surfaces of an upper barrel (1) and a lower barrel (2), and a clamping protrusion (15) and a locking groove (44) which are arranged on the front end surfaces of the upper barrel (1) and the lower barrel (2), the clamping groove (14) on the previous upper barrel is matched with the clamping protrusion (15) on the next upper barrel for use, and the locking groove (44) is matched with the locking protrusion (4) arranged on the rear end surface of the upper barrel (1) for use; the clamping groove (14) on the previous lower barrel is matched with the clamping protrusion (15) on the next lower barrel for use, and the locking groove (44) on the next lower barrel is matched with the locking protrusion (4) on the previous lower barrel for use;
the locking protrusion (4) comprises a locking panel (41), a locking tooth panel (42) and a first spring (43), the locking panel (41) is an outer side panel of the locking protrusion (4), a plurality of locking tooth telescopic holes (411) are formed in the locking panel (41), the locking tooth panel (42) is installed in a cavity inside the locking protrusion (4), a plurality of first locking teeth (421) matched with the locking tooth telescopic holes (411) are arranged on the locking tooth panel (42), the position of each first locking tooth (421) corresponds to the position of each locking tooth telescopic hole (411) during installation, and the first spring (43) is installed between the cavity inside the locking protrusion (4) and the locking tooth panel (42); the locking groove (44) comprises a second locking tooth (441) matched with the first locking tooth (421), a limiting protrusion (442) and a second spring (443), the second locking tooth (441) is arranged at the bottom of the locking groove (44), the limiting protrusion (442) is symmetrically arranged at two sides of the buckling locking part of the locking groove (44), the back surface of the limiting protrusion is connected with the second spring (443), and the limiting protrusion (442) is reset by the elastic force of the second spring (443).
2. The drill and blast method setting tool lever according to claim 1, wherein the locking device comprises an upper cylinder locking assembly and a lower cylinder locking assembly which have the same structure; the upper barrel locking assembly and the lower barrel locking assembly respectively comprise locking bulges (5) and sealing slots (54) which are equidistantly arranged on the rear end surfaces of the upper barrel (1) and the lower barrel (2), and locking grooves (52) and sealing bulges (53) which are arranged on the front end surfaces of the upper barrel (1) and the lower barrel (2); the locking bulge (5) on the previous upper cylinder (1) is matched and clamped with the locking groove (52) on the next upper cylinder, and the sealing slot (54) on the previous upper cylinder is hermetically connected with the sealing bulge (53) on the next upper cylinder; the locking bulge (5) on the previous lower cylinder body is matched and clamped with the locking groove (52) on the next lower cylinder body, and the sealing slot (54) on the previous lower cylinder body is hermetically connected with the sealing bulge (53) on the next lower cylinder body; the locking bulges (5) are all slidably mounted on the end faces of the upper barrel body or the lower barrel body correspondingly arranged.
3. The explosive rod for the drilling and blasting method application tool according to claim 1, wherein the clamping and fixing device comprises an upper barrel clamping groove (16) and an upper barrel clamping protrusion (17) which are symmetrically arranged at the lower port part of the upper barrel (1), and a lower barrel clamping groove (26) and a lower barrel clamping protrusion (20) which are symmetrically arranged at the upper port part of the lower barrel (2), the upper barrel clamping groove (16) and the lower barrel clamping protrusion (20) are matched for use, and the upper barrel clamping protrusion (17) and the lower barrel clamping groove (26) are matched for use; and a plurality of first threaded holes (13) corresponding to the groove positions of the upper cylinder clamping grooves (16) are formed in the outer side surface of the upper cylinder (1), a plurality of second threaded holes (261) are formed in the lower cylinder clamping bulges (20), and the second threaded holes (261) are matched with the first threaded holes (13) for use.
4. The tool charge rod for the drilling and blasting method according to claim 1, wherein the sliding limiting assembly comprises a first sliding rail (23), a second sliding rail (25), a first limiting screw hole (251), a first sliding protrusion (31), a second sliding protrusion (32) and a second limiting screw hole (321), the first sliding rail (23) is symmetrically arranged on the left side and the right side of the inner side of the lower barrel (2) and is matched with the first sliding protrusion (31), and the first sliding protrusion (31) is symmetrically arranged on the left side and the right side of the outer side of the explosive installation groove (3); second slide rail (25) set up barrel (2) inboard bottom central point down and put, and first spacing screw (251) set up on second slide rail (25), second slip arch (32) set up in explosive mounting groove (3) outside bottom central point, are provided with spacing screw (321) of second on the second slip arch (32), second slide rail (25) use with the cooperation of second slip arch (32), and first spacing screw (251) use with the cooperation of the spacing screw (321) of second.
5. The tool rod for the drilling and blasting method according to claim 1, wherein an upper cylinder limiting baffle (12) is arranged on the inner side of the lower port of the upper cylinder (1) and used for limiting two ends of a first arched isolating plate (11) arranged on the inner side of the upper cylinder (1); the inner side of the upper port part of the explosive mounting groove (3) is provided with a lower barrel limiting baffle (34) which limits the two ends of a second bow-shaped isolation plate (33) arranged on the inner side of the explosive mounting groove (3).
6. The rod of claim 5, wherein the explosive fixing device comprises a bandage assembly and a connecting ring (354), the bandage assembly is arranged on the left lower barrel limiting blocking piece (34), the connecting ring (354) is hinged on the right lower barrel limiting blocking piece (34), the bandage assembly is arranged in the bandage installation groove and comprises a bandage (35), a winding shaft (351), a spring (352) and a connecting hook (353), the bandage (35) is wound at the middle part of the winding shaft (351), the free end of the bandage (35) is connected with the connecting hook (353), the spring (352) is sleeved at two ends of the winding shaft (351), one end of the spring (352) is connected with the side wall of the middle part of the winding shaft (351), and the other end of the spring is connected with the side wall of the bandage installation groove; the connecting ring (354) is a U-shaped connecting ring which is matched with the connecting hook (353) for use.
7. A drill and blast method setting tool pole according to any one of claims 1 to 6, characterized in that the front end of the lower barrel (2) of the front end cartridge case is further provided with a base (27), the front end of the base (27) is provided with a conical projection (272) for cleaning the bottom of the drill hole, and the base (27) is further provided with a barrel-shaped protection wall (271).
8. A drill and blast method tool charge bar according to any one of claims 1 to 6, wherein the end of the lower barrel (2) of the end charge barrel is provided with an end cap (28), the end cap (28) is provided with a lead drawing port (281) penetrating through the end cap, and the upper part of the end cap (28) is provided with an end protection barrel (282).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010340480.1A CN111457805B (en) | 2020-04-26 | 2020-04-26 | Explosive loading rod for drilling and blasting construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010340480.1A CN111457805B (en) | 2020-04-26 | 2020-04-26 | Explosive loading rod for drilling and blasting construction |
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| CN111457805B true CN111457805B (en) | 2022-04-19 |
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| CN111895871B (en) * | 2020-08-20 | 2022-10-21 | 阳泉煤业（集团）有限责任公司 | Medium-depth blast hole charging device and method |
| CN115370332B (en) * | 2022-10-26 | 2023-01-31 | 吉林市双林射孔器材有限责任公司 | High-effect pressurizing perforating bullet |
| CN115876042A (en) * | 2022-11-09 | 2023-03-31 | 中国水利水电第七工程局成都水电建设工程有限公司 | Blasting method of ultra-small clear distance tunnel considering blasting influence characteristics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010101604A (en) * | 2008-10-27 | 2010-05-06 | Kajima Corp | Hose for loading explosive |
| CN103791788B (en) * | 2014-02-27 | 2015-06-24 | 山东科技大学 | Method for peripheral hole non-coupling continuous loading |
| CN204831041U (en) * | 2015-07-13 | 2015-12-02 | 浙江科技学院 | Quick powder charge auxiliary device of super large cross -section tunnel deep hole blasting |
| CN105387777B (en) * | 2015-10-30 | 2017-09-05 | 山东大学 | A kind of photoface exploision spaced loading joint-cutting pipe |
| CN206514737U (en) * | 2017-03-01 | 2017-09-22 | 福建省新华都工程有限责任公司 | One kind prevents the strapped device of hanging powder charge for deep water blasthole |
| CN207300073U (en) * | 2017-09-08 | 2018-05-01 | 中交隧道工程局有限公司 | A kind of drill bursting construction powder charge bar |
| CN107478116B (en) * | 2017-09-15 | 2019-03-19 | 武汉理工大学 | A kind of fixed device of emulsion cutting of fixed quantity for Uncoincided charge |
| CN108444350B (en) * | 2018-03-26 | 2019-10-01 | 华东交通大学 | A kind of recyclable Tunnel Blasting blasthole quantifies spaced loading device |
| CN209945165U (en) * | 2019-04-09 | 2020-01-14 | 山东科技大学 | Novel deep hole blasting energy-gathering pipe |
| CN210268387U (en) * | 2019-06-12 | 2020-04-07 | 湖南省航务工程有限公司 | Auxiliary charging device for underwater blasting construction |
| CN110986713B (en) * | 2020-01-02 | 2021-06-18 | 中国矿业大学(北京) | Large-diameter ultra-deep hole radiation energy accumulation loosening pre-splitting blasting device and filling method |
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