CN210664171U - Blasting big gun hole structure - Google Patents
Blasting big gun hole structure Download PDFInfo
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- CN210664171U CN210664171U CN201921305292.4U CN201921305292U CN210664171U CN 210664171 U CN210664171 U CN 210664171U CN 201921305292 U CN201921305292 U CN 201921305292U CN 210664171 U CN210664171 U CN 210664171U
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- hole
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- tunnel
- blasting
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Abstract
The utility model discloses a blasting big gun hole structure, including centre bore, cut out hole, auxiliary hole and all peripheral holes, centre bore, cut out hole, auxiliary hole and all peripheral holes evenly distributed are in the tunnelling working face outside, all peripheral holes evenly distributed is in the tunnel outside, the cut out hole symmetry sets up the both sides at the centre bore, the auxiliary hole distributes in the outside of cut out hole, all peripheral holes distribute in the outside of auxiliary hole, all peripheral holes include bottom hole and upper portion hole, the trompil department in bottom hole is located the below in tunnel, the hole in centre bore, cut out hole, auxiliary hole and upper portion hole is to all being the same with the tunnel underholing tunnelling direction, the bottom hole is concentrated to the auxiliary hole by drill way to hole bottom gradually, the utility model relates to a blasting field. This blasting big gun hole structure, the inside ponding in tunnel can flow to the tunnel junction and flow out along the tunnel bottom, avoids the inside ponding in tunnel, can save the use amount of explosive simultaneously.
Description
Technical Field
The utility model relates to a blasting field specifically is a blasting big gun hole structure.
Background
The mining and tunneling of mines generally comprises construction modes such as comprehensive mechanical tunneling (comprehensive tunneling) and blasting tunneling, wherein the comprehensive mechanical tunneling is to directly convey ores out of a working face by using a comprehensive tunneling machine and a conveyor belt, the mode is low in manpower, high in construction speed and safe, but for rock areas with high hardness, as cutter teeth cannot form notches in the cross section of a roadway, the mode cannot be implemented, blasting tunneling must be adopted, and the blasting tunneling is a construction mode of performing hole punching, charging and blasting on the tunneling working face, and then removing blasted broken stones out of the roadway. But the pit may appear in the tunnel bottom after blasting in current blasting big gun hole structure, causes the tunnel bottom to be easy ponding inconvenient discharge.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a blasting big gun hole structure has solved current blasting big gun hole structure and probably appears the pit in blasting back tunnel bottom, causes the inconvenient exhaust problem of easy ponding in tunnel bottom.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a blasting big gun hole structure, includes centre bore, undercut hole, auxiliary hole and all holes all around, centre bore, undercut hole, auxiliary hole and all around hole evenly distributed are in the tunnelling working face outside, all around hole evenly distributed is in the tunnel outside, the undercut hole symmetry sets up the both sides at the centre bore, the auxiliary hole distributes in the outside of slotted hole, all around the hole distribution is in the outside of auxiliary hole, all around the hole is including end hole and upper portion hole, the trompil department in end hole is located the below in tunnel, the hole of centre bore, undercut hole, auxiliary hole and upper portion hole is the same to all undercutting tunnelling direction with the tunnel, end hole is concentrated to auxiliary hole by drill way to hole end gradually.
Preferably, the distance between the cut holes is the same as the distance between the cut hole and the peripheral hole, and the auxiliary hole is located at the center between the cut hole and the peripheral hole.
Preferably, the difference between the height of the opening of the bottom edge hole and the height of the bottom of the hole is 10 cm.
Preferably, the upper hole comprises a side hole and an upper hole, wherein the side hole is positioned at two sides of the top of the bottom hole.
Preferably, the distance between the peripheral holes is 1m, and the distance between the auxiliary holes is 0.8 m.
Preferably, the auxiliary holes and the peripheral holes are symmetrically distributed along the horizontal central axis of the tunneling working face.
(III) advantageous effects
The utility model provides a blasting big gun hole structure. The method has the following beneficial effects:
the blasting blasthole structure is symmetrically arranged on two sides of a central hole through undercut holes, auxiliary holes are distributed on the outer sides of the undercut holes, peripheral holes are distributed on the outer sides of the auxiliary holes and comprise bottom edge holes and upper portion holes, the opening position of the bottom edge holes is located below a roadway, the hole directions of the central hole, the slotted holes, the auxiliary holes and the upper portion holes are the same as the roadway undercut tunneling direction, the bottom edge holes are gradually concentrated towards the auxiliary holes from the hole openings to the hole bottoms, the position, close to the hole openings of the bottom edge holes, of the roadway after blasting is lower than the hole bottom position, the height of the bottom of the roadway is gradually reduced from inside to the outlet, accumulated water in the roadway can flow to the roadway opening along the roadway bottom and flow out, the accumulated water in the roadway is avoided, meanwhile, the two undercut holes are symmetrically distributed, the auxiliary holes on the outer sides of the undercut holes are overlapped, and the auxiliary holes in the overlapped area only need to be, avoid overlapping and place the explosive, can save the use amount of explosive.
Drawings
Fig. 1 is a schematic structural view of a driving face of the present invention;
fig. 2 is the schematic diagram of the sectional structure of the tunnel of the present invention.
In the figure: 1 center hole, 2 cut holes, 3 auxiliary holes, 4 peripheral holes, 5 bottom edge holes, 6 upper holes and 7 tunneling working faces.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a blast hole structure for blasting comprises a central hole 1, cut holes 2, auxiliary holes 3 and peripheral holes 4, wherein the central hole 1, the cut holes 2, the auxiliary holes 3 and the peripheral holes 4 are all distributed on the outer side of a driving face 7, the peripheral holes 4 are uniformly distributed on the outer side of a roadway, the cut holes 2 are symmetrically arranged on two sides of the central hole 1, the auxiliary holes 3 are distributed on the outer side of the cut holes 2, the peripheral holes 4 are distributed on the outer side of the auxiliary holes 3, two cut holes 2 are symmetrically distributed, the auxiliary holes 3 on the outer sides of the cut holes 2 are overlapped, the auxiliary holes in the overlapped area only need to be filled with explosive once, the explosive is prevented from being overlapped and placed, the using amount of the explosive can be saved, the peripheral holes 4 comprise bottom side holes 5 and upper part holes 6, the opening position of the bottom side holes 5 is positioned below the roadway, the hole directions of the central hole 1, the cut holes 2, the auxiliary holes 3 and the upper part, bottom hole 5 is concentrated to auxiliary hole 3 gradually by drill way to the hole bottom, and the position that the tunnel is close to 5 drill ways in bottom hole is lower than the hole bottom position after the blasting, and the bottom in tunnel reduces by the height from interior to the export gradually, and the inside ponding in tunnel can flow to the road junction along the tunnel bottom and flow out, avoids the inside ponding in tunnel.
The distance between the cut holes 2 is the same as the distance between the cut holes 2 and the peripheral holes 4, and the auxiliary hole 3 is located at the center position between the cut holes 2 and the peripheral holes 4.
The difference between the height of the opening of the bottom edge hole 5 and the height of the bottom of the hole is 10 cm.
The upper hole 6 comprises a side hole positioned at two sides of the top of the bottom hole 5 and an upper hole positioned above the side hole.
The distance between the peripheral holes 4 was 1m, and the distance between the auxiliary holes 3 was 0.8 m.
The auxiliary holes 3 and the peripheral holes 4 are symmetrically distributed along the horizontal central axis of the tunneling working face 7.
When the blast-resistant and anti-explosion device is used, peripheral holes 4 are formed in a driving face 7, center holes 1 are formed in the center positions of the peripheral holes 4, then the distance between the cut holes 2 is the same as the distance between the cut hole 2 and the peripheral holes 4, the cut holes 2 and the auxiliary holes 3 are formed in the principle that the auxiliary holes 3 are located in the center positions between the cut holes 2 and the peripheral holes 4, explosives are placed in the cut holes 2, and the explosives are placed in the auxiliary holes 3 and the peripheral holes 4 for blasting at one time after blasting.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a blasting big gun hole structure, includes centre bore (1), cut hole (2), auxiliary hole (3) and all peripheral holes (4), centre bore (1), cut hole (2), auxiliary hole (3) and all distribute in tunnelling working face (7) outside all around hole (4), all peripheral holes (4) evenly distributed are in the tunnel outside, its characterized in that: the utility model provides a tunnel boring hole, including undercut hole (2), auxiliary hole (3), lower limit hole (5), tunnel boring hole (3), auxiliary hole (2), hole (2) and hole (6), the both sides of symmetry setting in centre bore (1), auxiliary hole (3) distribute in the outside of undercut hole (2), all edge hole (4) distribute in the outside of auxiliary hole (3), edge hole (5) are located the below in tunnel, the hole of centre bore (1), undercut hole (2), auxiliary hole (3) and upper portion hole (6) is the same to all undercutting tunnelling direction with the tunnel, edge hole (5) are concentrated to auxiliary hole (3) by the mouth of a river to the hole end gradually.
2. A blasting hole structure according to claim 1, wherein: the distance between the cut holes (2) is the same as the distance between the cut holes (2) and the peripheral holes (4), and the auxiliary holes (3) are positioned in the center between the cut holes (2) and the peripheral holes (4).
3. A blasting hole structure according to claim 1, wherein: the height difference between the opening of the bottom edge hole (5) and the bottom of the hole is 10 cm.
4. A blasting hole structure according to claim 1, wherein: the upper hole (6) comprises side holes positioned at two sides of the top of the bottom hole (5) and an upper hole positioned above the side holes.
5. A blasting hole structure according to claim 1, wherein: the distance between the peripheral holes (4) is 1m, and the distance between the auxiliary holes (3) is 0.8 m.
6. A blasting hole structure according to claim 1, wherein: the auxiliary holes (3) and the peripheral holes (4) are symmetrically distributed along the horizontal central axis of the tunneling working face (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305292.4U CN210664171U (en) | 2019-08-13 | 2019-08-13 | Blasting big gun hole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305292.4U CN210664171U (en) | 2019-08-13 | 2019-08-13 | Blasting big gun hole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210664171U true CN210664171U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921305292.4U Active CN210664171U (en) | 2019-08-13 | 2019-08-13 | Blasting big gun hole structure |
Country Status (1)
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|---|---|
| CN (1) | CN210664171U (en) |
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2019
- 2019-08-13 CN CN201921305292.4U patent/CN210664171U/en active Active
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