CN114777593A - Tunnel blast hole charging device and method - Google Patents
Tunnel blast hole charging device and method Download PDFInfo
- Publication number
- CN114777593A CN114777593A CN202210529036.3A CN202210529036A CN114777593A CN 114777593 A CN114777593 A CN 114777593A CN 202210529036 A CN202210529036 A CN 202210529036A CN 114777593 A CN114777593 A CN 114777593A
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- tube
- tunnel
- feeding pipe
- powder feeding
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000002360 explosive Substances 0.000 claims description 28
- 239000003814 drug Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 239000002800 charge carrier Substances 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000005422 blasting Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 8
- 238000012377 drug delivery Methods 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention belongs to the technical field related to tunnel blasting, and discloses a tunnel blast hole charging device which comprises a powder feeding pipe, an external fixing pipe, a cartridge abutting pipe, a fixing member and a positioning cushion block, wherein the powder feeding pipe is slidably arranged inside the external fixing pipe, and a horizontal groove is prefabricated on the powder feeding pipe along the extending direction; the fixing member fixedly connects the external fixing tube and the cartridge supporting tube through a first fixing hole reserved on the fixing member, a horizontal groove prefabricated on the cartridge conveying tube and a second fixing hole reserved on the cartridge supporting tube; the positioning cushion block is sleeved outside the rear end of the powder feeding pipe and used for tightly extruding the blast hole after the front section of the powder feeding pipe reaches a preset position. The invention also discloses a corresponding process method. The invention can realize the whole tunnel blast hole charging process in a compact structure and convenient control mode, obviously improves the operation efficiency, can recycle the device, and is beneficial to improving the automation degree and reducing the labor intensity of operators.
Description
Technical Field
The invention belongs to the technical field related to tunnel blasting, and particularly relates to a tunnel blast hole charging device and a tunnel blast hole charging method.
Background
With the development of railway and highway construction and technological progress, the tunnel excavation method is developed rapidly. The current common excavation methods comprise a drilling and blasting method, a shield method, a hybrid excavation method and the like. The drilling and blasting method has strong adaptability to geological conditions and low excavation cost, so that the method is widely applied to the construction of various hard rock tunnels, broken rock tunnels and mountain tunnels.
In the construction of the existing tunnel drilling and blasting method, the explosive roll type explosive is generally manually loaded, so that the working efficiency is low, the operation is inconvenient, the labor intensity is high, and the overall efficiency of tunnel construction is greatly influenced. Patent search found that some charging devices for tunnel drilling and blasting excavation have been proposed in the prior art. For example, CN201620349573.x proposes an integrated apparatus for drilling and blasting holes and charging by simulating tunnel drilling and blasting method, CN201721146546.3 proposes a chemical rod for drilling and blasting method, CN201921677180.1 proposes a blasting structure for water impact resistance in high-pressure water-rich section of tunnel engineering, and so on.
However, further studies have shown that the above prior art still has the following drawbacks or disadvantages: firstly, the device only adopts a simple tubular structure to fill explosive cartridges for explosion, and then the explosive cartridges are fixed by a plugging device, which inevitably leads to the situation that the positions of the explosive cartridges cannot be accurately positioned in blast holes; secondly, under various complicated operating mode environments, the requirements of the explosive charging operations on engineering personnel are still higher, the automation degree is insufficient, and the operating efficiency needs to be further improved.
Disclosure of Invention
In view of the above drawbacks and needs of the prior art, an object of the present invention is to provide a device and a method for charging a tunnel borehole, wherein the structural composition of the entire device is redesigned, and the specific structure and arrangement of some key modules are improved in a targeted manner, so that some technical problems encountered in charging a tunnel borehole can be effectively solved in a manner of higher efficiency, compact structure and convenient operation.
To achieve the above object, according to one aspect of the present invention, there is provided a tunnel borehole charging apparatus, characterized in that the apparatus comprises a powder delivery tube, an outer fixing tube, a cartridge abutting tube, a fixing member, and a positioning pad, wherein:
the powder feeding pipe is of a hollow structure, can be slidably arranged in the external fixed pipe, is provided with a horizontal groove along the extending direction, and is used for leading out a detonating cord connected with a detonator from the bottom of a blast hole;
the explosive cartridge abutting pipe is internally embedded in the rear end of the explosive feeding pipe and is used for abutting the detonator, the explosive and the like filled into the front section of the explosive feeding pipe;
the fixing member fixedly connects the external fixing tube and the cartridge supporting tube through a first fixing hole reserved on the external fixing tube, the horizontal groove prefabricated on the cartridge conveying tube and a second fixing hole reserved on the cartridge supporting tube;
the positioning cushion block is sleeved outside the rear end of the powder feeding pipe, and a guide hole is preset for leading out a detonating cord of the detonator from the bottom of a blast hole.
As a further improvement, the cross section of the powder feeding pipe is preferably circular, wherein the front section of the powder feeding pipe is in a complete circular cross section, and the horizontal groove is prefabricated at the bottom of the powder feeding pipe along the extending direction from the position of the fixing member to the position of the blast hole.
As a further improvement, the medicine feeding pipe is preferably made of antistatic flexible materials, the length of the medicine feeding pipe is preferably 3.0-4.5 m, and the outer diameter of the pipe wall is preferably 38-45 mm.
As a further improvement, the front end of the powder feeding pipe is preferably provided with a protective cap, and the protective cap is connected with the powder feeding pipe through a pin shaft and used for preventing dregs from entering the powder feeding pipe in the process of entering a blast hole.
As a further improvement, the cross section of the outer fixed tube is preferably circular.
As a further improvement, the cross section of the cartridge support tube is preferably circular and is made of a solid antistatic flexible material.
As a further improvement, the fixing member is preferably machined with an extension portion that facilitates automated mechanical gripping or manual gripping.
As a further improvement, the positioning cushion block is preferably a rubber block with a circular cross section, and is designed to reach the blast hole opening when the front section of the powder feeding pipe reaches a preset position, and the positioning cushion block tightly squeezes the blast hole opening.
As a further improvement, the blast hole is preferably processed into 45-50 mm, and a plurality of sections of explosives, detonators, a plurality of sections of explosives and a hole opening closed water bag or stemming are sequentially arranged from inside to outside.
As a further improvement, the medicine feeding pipe, the external fixing pipe, the cartridge abutting pipe, the fixing member and the positioning cushion block are preferably designed and manufactured by adopting a modular structure.
According to another aspect of the invention there is also provided a corresponding method of charging, the method comprising:
s1: punching holes in surrounding rocks on the tunnel face of the tunnel, and then cleaning the holes;
s2: placing explosive, detonator, orifice sealing water band or stemming and explosive cartridge supporting tube in advance in a explosive feeding tube in sequence, and leading out a detonating fuse through a horizontal groove prefabricated on the explosive feeding tube;
s3: the powder feeding pipe can be arranged in the external fixed pipe in a sliding way and then is slowly fed into the blast hole; then fixedly connecting the external fixing tube and the cartridge supporting tube through a fixing component;
s4: when the front section of the powder feeding pipe reaches the prefabricated position, the positioning cushion block sleeved outside the rear end of the powder feeding pipe also reaches the blast hole opening and tightly squeezes the blast hole; at the moment, the powder feeding pipe is slowly withdrawn from the blast hole by the aid of the fixing member, and then the powder roll, the detonator and the port sealing water band or the stemming can be left in the blast hole according to design requirements to finish charging.
As a further improvement, the medicine feeding device comprising the medicine feeding pipe, the outer fixing pipe, the medicine roll abutting pipe, the fixing member and the positioning cushion block can be recycled and reused.
As a further improvement, the above-mentioned medicine feeding device comprising the medicine feeding tube, the outer fixing tube, the cartridge abutting tube, the fixing member and the positioning block is preferably operated integrally by using an automated apparatus.
According to another aspect of the invention, the charging device is applied to drilling and blasting construction under complex conditions such as mountain tunnels.
Generally, compared with the prior art, the technical scheme of the invention mainly has the following technical advantages:
(1) according to the invention, by redesigning the structural composition of the whole device, the cartridge type explosive can be accurately fed and positioned into the blast hole at one time, the charging process of the whole tunnel blast hole is realized in a compact structure and convenient operation and control manner, the operation efficiency is obviously improved, and the labor intensity is effectively reduced;
(2) the invention also makes further pertinence improvement on the specific structures of some key components such as the powder feeding pipe, the external fixing pipe and the positioning cushion block, especially the mutual arrangement modes of the key components, and more practical tests show that the invention can effectively solve the problem of accurate positioning of the blast hole position, the whole operation is smoother and more convenient, and the working efficiency is greatly improved;
(3) the invention also provides an extension part which is convenient for automatic mechanical grabbing or manual holding for the fixing component, so that the whole medicine feeding device can be recovered more conveniently and quickly after one medicine feeding operation is finished, the automation degree is improved, the recovery and the use of the medicine charging device are convenient, and the cost is reduced, therefore, the invention is particularly suitable for the application occasions of complex working condition drilling and blasting method construction such as mountain tunnels.
Drawings
Figure 1 is a cross-sectional view of the overall construction of a tunnel charge for exemplifying the invention;
FIG. 2a is a schematic view showing more specifically the bottom structure of the drug delivery tube according to a preferred embodiment of the present invention;
FIG. 2b is a schematic diagram showing the overall structure of the drug delivery tube in more detail, according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view showing more specifically the overall structure of an outer fixed tube, according to a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram showing the overall construction of a cartridge in more detail, in accordance with a preferred embodiment of the present invention;
FIG. 5a is a top view of a structure for more particularly illustrating a positioning block, in accordance with a preferred embodiment of the present invention;
figure 5b is a side view of a structure for more particularly illustrating the positioning block, in accordance with a preferred embodiment of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same elements or structures, wherein:
1-a medicine delivery pipe; 2-an external fixed tube; 3-pushing the medicated roll into a tube; 4-a fixation member; 5, positioning a cushion block; 11-horizontal slotting; 12-a protective cap; 13-a pin shaft; 21-a first fixing hole; 31-a second fixation hole; 51-a pilot hole; 100-tunnel; 101-blast hole; 200-sealing a water bag or stemming at an orifice; 201-explosive; 202-detonator; 203-detonating cord.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a sectional view of the entire structure of a tunnel hole charge for exemplarily illustrating the present invention. As shown in fig. 1, the device mainly comprises a medicine feeding tube 1, an external fixing tube 2, a medicine roll supporting tube 3, a fixing member 4, a positioning cushion block 5 and other components, which will be explained in detail one by one.
Referring to fig. 2a and 2b, the powder delivery tube 1 is a hollow structure which is slidably disposed in the outer fixed tube 2, and the powder delivery tube 1 is preformed with a horizontal groove 11 along the extending direction, and a detonating cord 203 for connecting a detonator 202 is led out from the bottom of the blast hole.
More specifically, the drug delivery tube 1 is slidable along the inside of the outer fixed tube 2, i.e. the outer fixed tube 2 provides a sliding track for the drug delivery tube 1. The barrel 1 is preferably circular in cross-section with its forward section in full circular cross-section and may be pre-formed with a horizontal slot 11 in the bottom in extension from the point of entry into the outer fixed tube 2 to the point of the blasthole whereby a detonating cord 203 attached to a detonator 202 exits the bottom of the blasthole 101.
According to a preferred embodiment of the present invention, the medicine feeding tube 1 is preferably made of a flexible material with electrostatic prevention, and has a length of preferably 3.0m to 4.5m and an outer diameter of preferably 38mm to 45 mm. For example, the material is preferably PVC, which has a certain flexibility to avoid static electricity when entering the borehole 101, and can also accommodate some bending of the borehole 101.
According to another preferred embodiment of the present invention, the front end of the powder feeding tube 1 may preferably be provided with a protective cap 12 connected to the powder feeding tube 1, for example, by a pin 13, for preventing the entry of the dregs during the entry of the powder feeding tube 1 into the blast hole 101.
Referring to fig. 3, the cross section of the outer fixing tube 2 may preferably be circular, and a first fixing hole 21 is reserved at the bottom of the outer fixing tube, so that the fixing member 4 can be fixedly connected with the cartridge supporting tube 3 through the first fixing hole 21 and the horizontal slot 11, preferably in a bolt connection manner.
Referring to fig. 4, a cartridge abutting tube 3 is embedded in the rear end of the powder feeding tube 1 and is used for abutting the detonator 202 and the explosive 201 filled in the front section of the powder feeding tube 1. More specifically, a second fixing hole 31 is reserved on the cartridge support tube 3, so that the outer fixing tube 2 and the cartridge support tube 3 are fixedly connected.
In this way, the fixing member 4 easily fixedly connects the external fixing tube 2 and the cartridge supporting tube 3 via the first fixing hole 21 reserved on the external fixing tube 2, the horizontal groove 11 prefabricated on the drug delivery tube 1 and the second fixing hole 31 reserved on the cartridge supporting tube 3, and at the same time, does not hinder the free sliding of the drug delivery tube 1 in the external fixing tube 2, and accordingly greatly facilitates the later drug delivery related operation.
According to another preferred embodiment of the invention, said cartridge support tube 3 is preferably of circular cross-section, preferably a solid PVC tube.
Referring to fig. 5a and 5b, a positioning block 5 is mounted over the rear end of the barrel 1 and is predisposed with a pilot hole 51 for directing the detonating cord 203 of the detonator 202 out of the bottom of the blasthole 101.
More specifically, the positioning pad 5 is embodied in the form of a circular rubber block or a square rubber block, for example, and a guide hole in the form of a vertical hole, for example, is formed along the radial direction square, thereby facilitating the leading-out of the detonating cord 203, and when the front section of the powder feeding tube 1 reaches a predetermined position, the positioning pad 5 also reaches the blast hole opening, and the positioning pad 5 is squeezed against the blast hole opening, thereby better performing the function of accurately placing and positioning the cartridge type explosive in the blast hole.
According to another preferred embodiment of the invention, the blast hole 101 is preferably 45mm to 50mm, and the blast hole is composed of two explosive pieces 201, a detonator 202, a plurality of explosive pieces 201 and an orifice-closing water bag or stemming 200 in general sequence from inside to outside.
The method of integral charging according to the present invention will be explained in detail below.
S1: drilling holes at the surrounding rock of the tunnel face by using a manual handheld drilling tool or a hydraulic rock drilling trolley, and then cleaning the holes;
s2: placing an orifice-closed water band or stemming, explosives and a detonator in a powder feeding pipe 1 in advance in sequence, and leading out a detonating cord 203 through a horizontal groove 11 prefabricated on the powder feeding pipe;
s3: after the front section of the powder feeding pipe 1 reaches a prefabricated position through a mechanical device or manually, a positioning cushion block 5 sleeved outside the rear end of the powder feeding pipe 1 also reaches the blast hole opening and tightly extrudes the blast hole; at this time, the powder feeding pipe 1 can be slowly withdrawn from the blast hole by means of the extension part on the fixing member 4 convenient for automatic mechanical grabbing or manual holding, and then the powder roll, the detonator 202 and the port sealing water band or stemming 200 can be left in the blast hole 101 according to the design requirement to finish charging.
In conclusion, the tunnel blast hole charging device is compact in overall structure, convenient to operate and control, capable of remarkably improving the operation efficiency, recyclable, and beneficial to improving the automation degree and reducing the labor intensity of operators, and therefore has wide application prospects.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (10)
1. The utility model provides a tunnel big gun hole charging means, its characterized in that, the device is including sending pencil (1), outside fixed tube (2), cartridge to pipe (3), fixed component (4) and location cushion (5), wherein:
the powder feeding pipe (1) is of a hollow structure and can be arranged in the outer fixed pipe (2) in a sliding mode, a horizontal groove (11) is prefabricated in the powder feeding pipe (1) along the extending direction, and a detonating cord (203) used for connecting a detonator is led out from the bottom of a blast hole;
the explosive cartridge abutting pipe (3) is embedded in the rear end of the explosive feeding pipe (1) and is used for abutting the detonator, the explosive and the like filled into the front section of the explosive feeding pipe;
the fixing member (4) fixedly connects the external fixing tube (2) and the cartridge abutting tube (3) through a first fixing hole (21) reserved on the external fixing tube (2), the horizontal groove (11) prefabricated on the medicine feeding tube (1) and a second fixing hole (31) reserved on the cartridge abutting tube (3);
the positioning cushion block (5) is sleeved outside the rear end of the powder feeding pipe (1), and a guide hole (51) is preset for leading out a detonating cord (203) of a detonator (202) from the bottom of the blast hole (101).
2. A tunnel charge according to claim 1, in which the charge tube (1) is preferably circular in cross-section, with its front section in full circular cross-section, and the bottom of the tube, starting from the location of the fixing member to the location of the hole, is prefabricated with the horizontal slot (11) in the direction of extension.
3. A tunnel charge according to claim 1 or 2, characterised in that the charge tube (1) is preferably made of an antistatic flexible material and has a length of preferably 3.0-4.5 m and an outer diameter of preferably 38-45 mm.
4. A tunnel borehole charge according to any of the claims 1-3, characterized in that the front end of the charge carrier (1) is preferably provided with a protective cap (12), which protective cap (12) is connected to the charge carrier by a pin (13) for preventing entry of debris during entry of the charge carrier into the borehole.
5. A tunnel charge according to any one of claims 1-4, characterised in that the stick barrel (3) is preferably circular in cross-section and is made of a solid, anti-static flexible material.
6. A tunnel charge according to any one of claims 1-5, characterized in that the securing member (4) is preferably formed with an extension for facilitating automated mechanical gripping or manual handling.
7. A tunnel charge according to any of claims 1-6, characterized in that the positioning block (5) is preferably a rubber block of circular cross-section and designed to reach the muzzle when the front section of the barrel (1) reaches a predetermined position, and to jam the muzzle.
8. A tunnel borehole charge according to any of claims 1-7, characterized in that the charge tube (1), the outer holding tube (2), the coil support tube (3), the holding means (4) and the spacer block (5) are preferably of modular design and manufacture.
9. A method of loading a tunnel borehole using an apparatus according to any one of claims 1 to 8, the method comprising:
s1: punching holes in surrounding rocks on the tunnel face of the tunnel, and then cleaning the holes;
s2: placing an orifice-closed water band or stemming, explosive and a detonator in advance in a powder delivery pipe (1) in sequence, and leading out a detonating cord (203) through a horizontal groove (11) prefabricated on the powder delivery pipe;
s3: when the front section of the powder feeding pipe (1) reaches a prefabricated position, a positioning cushion block (5) sleeved outside the rear end of the powder feeding pipe (1) also reaches the blast hole opening and tightly squeezes the blast hole; at the moment, the powder feeding pipe (1) is slowly withdrawn from the blast hole by the fixing component (4), and the hole opening closed water band or stemming, a cartridge and a detonator are retained in the blast hole according to the design requirement to finish powder charging.
10. Method according to claim 9, characterized in that the above-mentioned means of feeding, comprising the tube (1), the external fixation tube (2), the cartridge support tube (3), the fixation means (4) and the positioning block (5), are preferably performed as a whole using automated equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210529036.3A CN114777593B (en) | 2022-05-16 | 2022-05-16 | Tunnel blast hole charging device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210529036.3A CN114777593B (en) | 2022-05-16 | 2022-05-16 | Tunnel blast hole charging device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114777593A true CN114777593A (en) | 2022-07-22 |
| CN114777593B CN114777593B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210529036.3A Active CN114777593B (en) | 2022-05-16 | 2022-05-16 | Tunnel blast hole charging device and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB638974A (en) * | 1946-11-13 | 1950-06-21 | Arthur James Lowe | Improvements in or relating to explosive devices adapted to produce a succession of detonations |
| JP2007297884A (en) * | 2006-05-08 | 2007-11-15 | Shimizu Corp | Tunnel excavation method |
| JP2018021743A (en) * | 2016-08-05 | 2018-02-08 | 株式会社Ｓｋテック | Explosive holding plate, loading explosive unit, and process of manufacture of loading explosive unit |
| CN209295801U (en) * | 2018-11-22 | 2019-08-23 | 四川交投建设工程股份有限公司 | Tunnel Blasting combined type charge constitution |
| CN211012690U (en) * | 2019-10-09 | 2020-07-14 | 中铁十局集团有限公司 | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering |
| CN111928746A (en) * | 2020-06-09 | 2020-11-13 | 甘肃路桥建设集团有限公司 | Energy-concerving and environment-protective digital detonator water pressure blasting loaded constitution in tunnel |
| CN217424144U (en) * | 2022-05-16 | 2022-09-13 | 中铁二十局集团有限公司 | Tunnel big gun hole charging means |
-
2022
- 2022-05-16 CN CN202210529036.3A patent/CN114777593B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB638974A (en) * | 1946-11-13 | 1950-06-21 | Arthur James Lowe | Improvements in or relating to explosive devices adapted to produce a succession of detonations |
| JP2007297884A (en) * | 2006-05-08 | 2007-11-15 | Shimizu Corp | Tunnel excavation method |
| JP2018021743A (en) * | 2016-08-05 | 2018-02-08 | 株式会社Ｓｋテック | Explosive holding plate, loading explosive unit, and process of manufacture of loading explosive unit |
| CN209295801U (en) * | 2018-11-22 | 2019-08-23 | 四川交投建设工程股份有限公司 | Tunnel Blasting combined type charge constitution |
| CN211012690U (en) * | 2019-10-09 | 2020-07-14 | 中铁十局集团有限公司 | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering |
| CN111928746A (en) * | 2020-06-09 | 2020-11-13 | 甘肃路桥建设集团有限公司 | Energy-concerving and environment-protective digital detonator water pressure blasting loaded constitution in tunnel |
| CN217424144U (en) * | 2022-05-16 | 2022-09-13 | 中铁二十局集团有限公司 | Tunnel big gun hole charging means |
Non-Patent Citations (1)
| Title |
|---|
| 杨延勇: "成贵铁路瓦斯长大隧道控制爆破技术" * |
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| CN114777593B (en) | 2023-04-28 |
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