CN205593437U - Tunnel blasting big gun hole arrangement structure - Google Patents
Tunnel blasting big gun hole arrangement structure Download PDFInfo
- Publication number
- CN205593437U CN205593437U CN201620010747.XU CN201620010747U CN205593437U CN 205593437 U CN205593437 U CN 205593437U CN 201620010747 U CN201620010747 U CN 201620010747U CN 205593437 U CN205593437 U CN 205593437U
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- Prior art keywords
- hole
- big gun
- gun hole
- arrangement structure
- layer close
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- Expired - Fee Related
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model discloses a tunnel blasting big gun hole arrangement structure, this big gun hole arrangement structure set up two -layer close hole curtain and middle blown -out shot hole on the brill, and two -layer close hole curtain plays certain cushioning effect with middle blown -out shot hole when carrying out the undercutting blasting, make the tunnel explode and reach the requirement of construction vibration velocity when excavating the operation.
Description
Technical field
This utility model relates to explosion, particularly a kind of Tunnel Blasting steel for shot structure.
Background technology
Explosion has the feature of high risk and complexity, the construction safety problem that may cause except explosion in blasting engineering, another very important vibrations being a risk that bursting work causes can involve building basis thus affect building safety, and can cause that surrounding resident lives uncomfortable, therefore bursting work uses effective shock-dampening method to be paid much attention to by blasting engineering teacher and owner.In tunnel blasting excavation operation; Cut Blasting typically shakes the main cause exceeded standard; during blasting hole bore operation, engineer would generally bore the blown-out shot hole of some not blasting charges and comes to reduce concussion of blasting, but the effect of reduction concussion of blasting is had a significant impact by the different arrangement in blown-out shot hole.
Utility model content
For the problems referred to above, the purpose of this utility model be to provide a kind of can during Tunnel Blasting the steel for shot structure of effective damping.
This utility model is achieved through the following technical solutions above-mentioned purpose: a kind of Tunnel Blasting steel for shot structure, concrete measure is to bore big gun hole along face 7 excavation contour line to form outer layer close hole curtain 1.
Further, bore big gun hole along keyhole 4 outward flange and form internal layer close hole curtain 2.
Further, string blown-out shot hole 3 is bored along keyhole 4 region middle straight line.
Accompanying drawing explanation
Fig. 1 is the steel for shot structural representation of the face of this utility model embodiment；
Detailed description of the invention
Refering to Fig. 1, steel for shot structure on face 7, string blown-out shot hole 3 is bored in centre, bore keyhole 4, via hole 5 and bottom plate hole 6, bore close hole along keyhole 4 outward flange and form internal layer close hole curtain 2, then bore formation outer layer close hole, close hole curtain 1 along face 7 excavation contour line 8, detonate at twice, the first powder charge of keyhole 4 is detonated, and then via hole 5, bottom plate hole 6, outer layer close hole curtain 1 and internal layer close hole curtain 2 powder charge again are detonated.
Claims (1)
1. a Tunnel Blasting steel for shot structure, it is characterized in that by big gun hole on the arch face of quick-fried sillar relative to the arrangement of position, bore big gun hole along face excavation contour line and form outer layer close hole curtain, bore big gun hole along keyhole outward flange and form internal layer close hole curtain, bore string blown-out shot hole along Cut Blasting region middle straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010747.XU CN205593437U (en) | 2016-01-07 | 2016-01-07 | Tunnel blasting big gun hole arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010747.XU CN205593437U (en) | 2016-01-07 | 2016-01-07 | Tunnel blasting big gun hole arrangement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205593437U true CN205593437U (en) | 2016-09-21 |
Family
ID=56928087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620010747.XU Expired - Fee Related CN205593437U (en) | 2016-01-07 | 2016-01-07 | Tunnel blasting big gun hole arrangement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205593437U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218860A (en) * | 2017-06-26 | 2017-09-29 | 国家电网公司 | A kind of blasting method of IV class surrounding rocks tunnel smooth surface |
| CN108592725A (en) * | 2018-05-16 | 2018-09-28 | 厦门爆破工程公司 | The integrated use detonator Upon Blasting for Tunnel Driving method with emptying aperture damping technology poor in short-term |
| CN108592724A (en) * | 2018-05-16 | 2018-09-28 | 厦门爆破工程公司 | A kind of short interval detonation blasting method of the detonator reducing ground blasting vibration |
| CN108801089A (en) * | 2018-06-12 | 2018-11-13 | 中铁六局集团有限公司 | The rock tunnel excavation method of structures is worn under a kind of super close distance |
-
2016
- 2016-01-07 CN CN201620010747.XU patent/CN205593437U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218860A (en) * | 2017-06-26 | 2017-09-29 | 国家电网公司 | A kind of blasting method of IV class surrounding rocks tunnel smooth surface |
| CN108592725A (en) * | 2018-05-16 | 2018-09-28 | 厦门爆破工程公司 | The integrated use detonator Upon Blasting for Tunnel Driving method with emptying aperture damping technology poor in short-term |
| CN108592724A (en) * | 2018-05-16 | 2018-09-28 | 厦门爆破工程公司 | A kind of short interval detonation blasting method of the detonator reducing ground blasting vibration |
| CN108801089A (en) * | 2018-06-12 | 2018-11-13 | 中铁六局集团有限公司 | The rock tunnel excavation method of structures is worn under a kind of super close distance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20170107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |