CN202582379U - Cumulative blasting joint-cutting pipe - Google Patents
Cumulative blasting joint-cutting pipe Download PDFInfo
- Publication number
- CN202582379U CN202582379U CN 201220238592 CN201220238592U CN202582379U CN 202582379 U CN202582379 U CN 202582379U CN 201220238592 CN201220238592 CN 201220238592 CN 201220238592 U CN201220238592 U CN 201220238592U CN 202582379 U CN202582379 U CN 202582379U
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- pipe body
- pvc pipe
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- joint
- cutting
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Abstract
The utility model discloses a cumulative blasting joint-cutting pipe which comprises a poly vinyl chloride (PVC) pipe body. The diameter of the PVC pipe body is smaller than that of a drilled hole, the length of the PVC pipe body is 25-30cm larger than a loaded length. Except that a length of 7-12 cm is respectively reserved at two ends of the PVC pipe body, cut joints of 2-4mm are arranged on symmetric surfaces of two sides of the remaining PVC pipe body, and one end of the PVC pipe body is sealed through a cork. According to the cumulative blasting joint-cutting pipe, the hole drilling rate can be reduced, a roadway or a chamber is good in contour forming effect, flatness is high, working hours and material consumption in anchor spraying are reduced, shock to section surrounding rock caused by blasting is reduced, the vibrating range is reduced, damage to the surrounding rock is reduced, the surrounding rock is effectively protected, and the cumulative blasting joint-cutting pipe is favorable for supporting and stability of engineering pits.
Description
Technical field
The utility model relates to explosive, relates in particular to CUMULATIVE BLASTING joint-cutting pipe.
Background technology
For a long time under most of occasions, usually only simply in order to save trouble, and take the method lacking perforating, many powder charges as far as possible, leave about big gun, cause and backbreak in a large number, the badly damaged stability of protolith has formed potential safety hazard for continuing construction with use in the future.For a change this state, a lot of in the world fireman authors have created some kinds of controlled blasting methods through big quantity research and experiment, wherein the most fruitful a kind of be exactly " photoface exploision ".Past photoface exploision great majority are in execution conditions and blasting condition good engineering, mainly pursue " light " word; In order to make the explosion contoured surface reach " smooth smooth "; Need to increase more boring, need special dynamite, also need very careful design and operation with low power; Such photoface exploision not only is difficult to promote under the existence conditions of China's mine working, and is difficult to accelerate driving speed.
In order to reach both high-quality, safety comprehensively; Quick again, as to be prone to row requirement, systems such as China's coal-mine, railway, metallurgy cooperate popularization bolt-spary supports and mechanization speedy drivage technological; Comprehensively development test the various smooth Surface Blasting Technology that are prone to row fast, this technology mainly is the layout of periphery hole.It is found that common perimeter blasting not only forms through check between the big gun hole, in the cranny development rock stratum, seldom can form smooth wall, occur inevitably backbreaking, country rock is damaged; And other directions form radial cracking at random around in the big gun hole, and country rock is damaged, and in cranny development rock or low-intensity rock, also can cause and backbreak, and borehole spacing is little, has increased the boring workload, increase the initiating equipment consumption.
The utility model content
In view of above-mentioned existing in prior technology problem, the designer has proposed cumulative joint-cutting blasting technique to the characteristics of some rock mass tensile strength much smaller than compression strength, and the utility model has designed the CUMULATIVE BLASTING joint-cutting pipe that is used for cumulative joint-cutting blasting technique.
For achieving the above object, the technical scheme that the utility model is taked is:
A kind of CUMULATIVE BLASTING joint-cutting pipe; It comprises a pvc pipe body; The diameter of pvc pipe body is less than bore diameter, and the length of pvc pipe body is greater than loaded length 25-30Cm, except that leaving respectively the 7-12Cm length at pvc pipe body two ends; All have the joint-cutting of 2-4mm on the bilateral symmetry face of all the other pvc pipe bodies, pvc pipe body one end seals with cork.
Put into explosive cartridge during use, load onto detonator, each boring of packing into gets final product.The energy that discharges when detonating the back explosive charge accumulates energy-gathering jetting along the cumulative joint-cutting, near it, produces the jet of super-pressure, ultrahigh speed, high-energy-density, preferentially in rock, forms directed crack.
The utility model can reduce the boring rate; Make tunnel or chamber contoured effective, flatness is high, during work when reducing the anchor spray and material consumption; Reduce the big gun shake of explosion to the section country rock; Country rock is protected in the damage that makes oscillating region reduce, alleviate country rock effectively, and the supporting that helps engineering cave body is with stable.
Description of drawings
Fig. 1 is the utility model CUMULATIVE BLASTING joint-cutting pipe sketch map.
Among the figure: 1-PVC body, 2-joint-cutting, 3-cork.
The specific embodiment
As shown in Figure 1; The CUMULATIVE BLASTING joint-cutting pipe of the utility model, it comprises a pvc pipe body 1, the diameter of pvc pipe body 1 is less than bore diameter; The length of pvc pipe body 1 is greater than loaded length 25-30cm; Except that leaving respectively the 7-12cm length at body 1 two ends, all have 2-4mm joint-cutting 2 on the bilateral symmetry face of all the other bodys 1, pvc pipe body 1 one ends are with cork 3 sealings.
Claims (1)
1. CUMULATIVE BLASTING joint-cutting pipe; It is characterized in that it comprises a pvc pipe body, the diameter of pvc pipe body is less than bore diameter; The length of pvc pipe body is greater than loaded length 25-30Cm; Except that leaving respectively the 7-12Cm length at pvc pipe body two ends, all have the joint-cutting of 2-4mm on the bilateral symmetry face of all the other pvc pipe bodies, pvc pipe body one end seals with cork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238592 CN202582379U (en) | 2012-05-17 | 2012-05-17 | Cumulative blasting joint-cutting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238592 CN202582379U (en) | 2012-05-17 | 2012-05-17 | Cumulative blasting joint-cutting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202582379U true CN202582379U (en) | 2012-12-05 |
Family
ID=47251782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238592 Expired - Fee Related CN202582379U (en) | 2012-05-17 | 2012-05-17 | Cumulative blasting joint-cutting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202582379U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759601A (en) * | 2014-01-07 | 2014-04-30 | 天地科技股份有限公司 | Underground coal mine deep-hole directional blasting cartridge |
| CN104897014A (en) * | 2015-05-27 | 2015-09-09 | 贵州大学 | Blasting charge structure |
| CN110243244A (en) * | 2019-07-18 | 2019-09-17 | 中铁十八局集团有限公司 | It is a kind of based on Detonation waveform modulation circumferential slit without cavity liner air gap CUMULATIVE BLASTING loading method |
| CN113268801A (en) * | 2021-06-04 | 2021-08-17 | 中铁隧道局集团有限公司 | Tunnel surrounding rock supporting method and system based on tunnel field solution reconstruction theory |
-
2012
- 2012-05-17 CN CN 201220238592 patent/CN202582379U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759601A (en) * | 2014-01-07 | 2014-04-30 | 天地科技股份有限公司 | Underground coal mine deep-hole directional blasting cartridge |
| CN104897014A (en) * | 2015-05-27 | 2015-09-09 | 贵州大学 | Blasting charge structure |
| CN110243244A (en) * | 2019-07-18 | 2019-09-17 | 中铁十八局集团有限公司 | It is a kind of based on Detonation waveform modulation circumferential slit without cavity liner air gap CUMULATIVE BLASTING loading method |
| CN113268801A (en) * | 2021-06-04 | 2021-08-17 | 中铁隧道局集团有限公司 | Tunnel surrounding rock supporting method and system based on tunnel field solution reconstruction theory |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20180517 |