CN211012690U - Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering - Google Patents
Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering Download PDFInfo
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- CN211012690U CN211012690U CN201921677180.1U CN201921677180U CN211012690U CN 211012690 U CN211012690 U CN 211012690U CN 201921677180 U CN201921677180 U CN 201921677180U CN 211012690 U CN211012690 U CN 211012690U
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- blasting
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- gun hole
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Abstract
The utility model discloses an anti water impact blasting structure of rich water section of tunnel engineering high pressure belongs to tunnel construction technical field. It includes the big gun hole of boring at the position of waiting to explode, characterized by: be provided with charging means in the big gun hole, charging means includes the charge tube of PVC material, the tail end of charge tube is sealed, the head end of charge tube is open structure, the head end front end of charge tube is connected with the device that blocks up, the device that blocks up is big-mouth outwards horn mouth form, the device that blocks up with the big gun hole mouth inner wall in big gun hole hugs closely together, the charge tube is filled with a plurality of cartridges for the blasting, and the millisecond detonator for the blasting is drawn forth outside the tubes from the charge tube. The utility model discloses fine solution tunnel engineering high pressure rich water section bore that exists explode the degree of difficulty big, the big gun hole interior volume of a powder receives the water impact easily to appear the off normal, rush out the big gun hole scheduling problem, can fine reach the blasting effect, and its construction easy operation, the efficiency of construction is high.
Description
Technical Field
The utility model relates to a blasting structure, especially a blasting structure that is used for anti water impact of rich water section of tunnel engineering high pressure belongs to tunnel construction technical field.
Background
In recent years, with the large-scale construction of public facilities, the construction of underground tunnel engineering is required in many fields, and the underground tunnel engineering construction often encounters an area with abnormally complicated geology. The most common excavation method of the tunnel engineering is still a drilling and blasting method at present, and has the obvious advantages of simple construction process, flexible application and reasonable manufacturing cost.
The construction of tunnel engineering is closely related to geological conditions, particularly the construction of high-pressure water-rich section tunnel engineering with development of underground water and great burial depth and high pressure, the underground water has great softening influence on surrounding rocks and structural surfaces, the loading difficulty of drilling and blasting construction is great, the explosive rolls in blast holes are easy to deviate and punch out of the holes under the impact of high-pressure water flow, the explosive rolls in the blast holes are not completely positioned at the bottoms of the holes, the undermining effect is influenced, the peripheral holes are not loaded at intervals, the overbreak is obvious, and the like, so that the blasting effect is not ideal.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides a tunnel engineering high pressure rich water section anti water impact blasting structure that the construction is simple, not shift is strikeed by the rivers.
The utility model discloses a realize through following technical scheme: the utility model provides an anti water impact blasting structure of rich water section of tunnel engineering high pressure, includes and drills the big gun hole of establishing, characterized by in treating the blasting position: be provided with charging means in the big gun hole, charging means includes the charge tube of PVC material, the tail end of charge tube is sealed, the head end of charge tube is open structure, the head end front end of charge tube is connected with the device that blocks up, the device that blocks up is big-mouth outwards horn mouth form, the device that blocks up with the big gun hole mouth inner wall in big gun hole hugs closely together, the charge tube is filled with a plurality of cartridges for the blasting, and the millisecond detonator for the blasting is drawn forth outside the tubes from the charge tube.
The utility model discloses in, the cartridge is packed into the intraductal corresponding position of powder charge, and the tight device of stopper through powder charge tube head end makes it fixed firm with the big gun hole mouth, can avoid the downthehole rivers of big gun to dash out the powder charge, and the cartridge in the powder charge pipe does not receive the rivers impact influence, and the skew can not take place for the cartridge position, can reach anticipated blasting effect.
Furthermore, the charging tube and the plugging device are integrated into a whole.
The utility model has the advantages that: the utility model discloses simple structure, the preparation is convenient, low cost. The utility model discloses an adopt the charge tube of special structural design as charge structure, its stopper tight device can be fixed firm with big gun hole mouth when installing in big gun hole, can avoid the downthehole rivers of big gun to go out the charge device, and the interior cartridge of charge tube does not receive the rivers impact influence, and the skew can not take place for the cartridge position, can reach anticipated blasting effect. The utility model discloses construction operation is simple, utilizes the utility model discloses during the construction, but the greatly reduced construction degree of difficulty can improve the efficiency of construction greatly.
Drawings
FIG. 1 is a schematic front view of the present invention in an embodiment;
FIG. 2 is a schematic structural view of a charge of the present invention;
in the figure, 1, a blast hole, 2, a charge tube, 3, a plugging device, 4, a millisecond detonator, 5 and a cartridge.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawing, the anti-water impact blasting structure for the high-pressure water-rich section in tunnel engineering comprises a blast hole 1 drilled at a position to be blasted, wherein a charging device is arranged in the blast hole 1 and comprises a charging tube 2 made of PVC materials, the tail end of the charging tube 2 is sealed, the head end of the charging tube 2 is of an open structure, the front end of the head end of the charging tube 2 is connected with a plugging device 3, the plugging device 3 is in a horn mouth shape with a large opening facing outwards, the plugging device 3 is tightly attached to the inner wall of the blast hole 1, a plurality of blasting cartridges 5 are filled in the charging tube 2, and a blasting millisecond 4 is led out of the charging tube 2 to the outside.
The utility model provides a tight device 3 of stopper and charge pipe 2 can adopt the split type structure of linking together, for the processing preparation, preferably, charge pipe 2 with tight device 3 of stopper makes the structure as an organic whole.
Utilize the utility model discloses when boring the construction of exploding:
② measuring the drilling and hole distribution by accurately locating the positions of excavation contour line, peripheral eyes, auxiliary eyes and cut-out eyes on the working face with a total station;
③ explosive is installed, the explosive charging device of the utility model can be adopted wholly or partially according to the distribution of the high-pressure water-rich blast holes on the tunnel face, and the explosive charging device of the utility model is used for charging the underwater blast holes at the bottom of the tunnel;
according to blast hole types such as undercut hole, auxiliary hole, all edges of the hole, pack into explosive, millisecond detonator according to the explosive charging structure who bores and explodes the design the utility model provides a charging device, millisecond detonator or detonating cord "take a seat in opposite sign";
after confirming that the depth of the blast hole meets the drilling and blasting requirements, directly loading explosive loading devices loaded with explosives, detonators or detonating cords into the corresponding blast hole, and tightly attaching the explosive loading devices to the blast hole by using the plugging device 3 of the explosive loading tube 2 to prevent water flow in the blast hole from rushing out the explosive loading devices;
④, detonating and effect checking, wherein a blasting operator uses a blasting machine to detonate at a safe explosion avoiding point, the blasting effect is checked after blasting, the blasting effects such as over-short excavation, footage and the like are mainly checked, and the drilling and blasting design is continuously optimized.
The utility model discloses every circulation charging time of more conventional blasting shortens 20 minutes, and reducible blind big gun is handled simultaneously, the owe digs mends the influence of big gun time to the work efficiency, can improve the efficiency of construction greatly.
The utility model discloses fine solution tunnel engineering high pressure rich water section bore that exists explode the degree of difficulty big, the big gun hole interior volume of a powder receives the water impact and easily appears the off normal, rush out the big gun hole scheduling problem, can fine reach the blasting effect, and its construction easy operation, the efficiency of construction is high, is favorable to the reduction of erection time.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (2)
1. The utility model provides an anti water impact blasting structure of rich water section of tunnel engineering high pressure, includes and drills the big gun hole of establishing, characterized by in treating the blasting position: be provided with charging means in the big gun hole, charging means includes charge tube (2) of PVC material, the tail end of charge tube (2) is sealed, the head end of charge tube (2) is open structure, the head end front end of charge tube (2) is connected with and is filled tight device (3), it is big mouthful of horn mouth form outwards to fill tight device (3), fill tight device (3) with the big gun hole mouth inner wall in big gun hole is hugged closely together, be filled with a plurality of explosive rolls for the blasting in charge tube (2), the millisecond detonator that the blasting was used is drawn forth to the outside of tubes in charge tube (2).
2. The anti-water flow impact blasting structure of the high-pressure water-rich section in the tunnel engineering according to claim 1, which is characterized in that: the medicine loading pipe (2) and the plugging device (3) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921677180.1U CN211012690U (en) | 2019-10-09 | 2019-10-09 | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921677180.1U CN211012690U (en) | 2019-10-09 | 2019-10-09 | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211012690U true CN211012690U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921677180.1U Expired - Fee Related CN211012690U (en) | 2019-10-09 | 2019-10-09 | Anti water impact blasting structure of high-pressure water-rich section of tunnel engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211012690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777593A (en) * | 2022-05-16 | 2022-07-22 | 中铁二十局集团有限公司 | Tunnel blast hole charging device and method |
-
2019
- 2019-10-09 CN CN201921677180.1U patent/CN211012690U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777593A (en) * | 2022-05-16 | 2022-07-22 | 中铁二十局集团有限公司 | Tunnel blast hole charging device and method |
| CN114777593B (en) * | 2022-05-16 | 2023-04-28 | 中铁二十局集团有限公司 | Tunnel blast hole charging device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20211009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |