CN1241711A - Demolition method utilizing hole with spiral recess - Google Patents
Demolition method utilizing hole with spiral recess Download PDFInfo
- Publication number
- CN1241711A CN1241711A CN 98112144 CN98112144A CN1241711A CN 1241711 A CN1241711 A CN 1241711A CN 98112144 CN98112144 CN 98112144 CN 98112144 A CN98112144 A CN 98112144A CN 1241711 A CN1241711 A CN 1241711A
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- Prior art keywords
- grooving
- hole
- spiral
- explosion
- demolition
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Abstract
The present invention relates to the field of demolition technology, and is the three-dimensional expansion of linear recess hole demolition technology, and aims at resulting in ever wide loosing range, effective control of the size of broken matter, wide range of tension breakdown as the main breakdown mode and reduced compression breakdown range of demolition. The present invention features the circular hole with spiral recess for charging explosive powder for demolition with the number, pitch and shape of recesses and other parameters being determined based on demolition requirement. The present invention is suitable for demolition of rock, concrete and other material.
Description
Demolition method utilizing hole with spiral recess belongs to the blasting technique field.
In the prior art, existing at present grooving hole blasting method, but the grooving mode is the straight line grooving, its concrete form is: (1) is along the vertical grooving of hole axle; (2) along the horizontal grooving of hole axle, and existing technology only solves straight line one-tenth seam explosion problem.Apply to broken face control, often there is the technical barrier of grooving skew in this technology when construction.
The present invention is mainly used in the broken rock burst broken (non-outline line controlled blasting) in standing and the part pinpoint blasting, its purpose is: (1) is under the situation of equal explosive charge, enlarge the loose range of explosion significantly, thus can reduce energy consumption, reduce cost, the reduction of erection time; (2) utilize the selection of helical cutting hole grooving pitch, control effectively, avoid secondary blasting by the block size behind explosion thing quick-fried; (3) reduce big gun hole pulverizing district scope on every side, reduce of the influence of explosion dust in a large number environment; (4) the crack initiation energy of reduction explosion object under the situation of equal blasting scale, reduces the influence of blasting vibration to environment.
Demolition method utilizing hole with spiral recess, major technology method are according to the explosion needs, make the circular hole of a band helical cutting, and parameters such as its grooving number, helix pitch, grooving shape are specifically determined according to the explosion object.Helical cutting can be divided into: (a) impact grooving, but the method is the grooving tool of a special cutting spiral slot, utilizes impulsive force to cut a hole one to several grooves that distributes with hole axle spiral at the circular hole periphery; (b) rotation grooving, the method is generally implemented in bigger hole, is to cut out required helicla flute with special rotary cutter on the circular hole wall.Demolition method utilizing hole with spiral recess can adopt coupling charging and the not good for both sides blasting method of coupling charging, specifically determines according to the explosion object.
Process characteristic of the present invention, step gather, main technique is a helical cutting, and the something in common of the straight line grooving of helical cutting and prior art all is a grooving on the circular hole wall, the cardinal principle of grooving also identical (impact and rotation grooving), and difference be the present invention is a helical cutting.The straight line grooving belongs to two-dimensional problems in mechanical analysis, and helical cutting belongs to three-dimensional problem.On the explosion purpose, the former is controlled to seam by genus, and it is broken that the latter belongs to control.On Cracking Mechanism, the two all belongs to stress and concentrates the pulling force fragmentation, and this and existing circular hole crushing Blasting have bigger difference.
The present invention makes a circular hole along axle band spiral seam grooving, the number of its grooving, helix pitch, parameters such as the shape of grooving are determined according to the concrete condition design of explosion object, utilize special-purpose pore-forming facility, will be by materials such as the rock of explosion or concrete, make band spiral fluted big gun hole, blasting charge explosion then, or utilize the helical cutting instrument, make the big gun hole of spirality grooving, utilize methods such as impulsive force or rotation cutting, make one to several grooves that distributes with hole axle spiral at the circular hole periphery, charge explosion in band spiral fluted hole, helical cutting aperture grooving is processed to form the grooving tip, and it is broken by quick-fried material to utilize the grooving point stresses to concentrate, the explosion and crushing scope is increased, design control spiral distance utilizes the grooving spiral apart from controlling by the broken block of quick-fried material, and the present invention is to rock, concrete is holed, helical cutting, the blasting charge explosion, broken explosion matter body, its aperture, big gun hole, loading method, the methods of ignition etc. are all unrestricted.
Demolition method utilizing hole with spiral recess is that the three-dimensional of original straight line grooving hole blasting technique is promoted, straight line grooving hole blasting technique be be oriented the seam be purpose, and helical cutting hole blasting technique is to be purpose to control broken by the explosion object, be characterized in having bigger loose range, and can more effectively control by the broken piece footpath of explosion object by parameters such as spiral distances than former boring (circular hole) explosion.Another characteristics of the present invention are to enlarge explosion pulling force damage envelope, and dwindle explosion compression damage scope as far as possible, promptly based on pulling force destruction.Feature of the present invention is to make a circular hole along axle band helical cutting, and parameters such as its grooving number, helix pitch, grooving shape are determined powder charge in the helical cutting hole, explosion according to the concrete condition of explosion object.The present invention has and cuts down the consumption of energy, and improves advantages such as work efficiency, is applicable to the crushing Blasting of fragile materials such as rock, concrete.
The present invention compares with the circular bore explosion, has following advantage and effect:
(1) on Cracking Mechanism, the present invention has utilized grooving point stresses concentration phenomenon, has reduced the object institute's energy requirement that breaks;
(2) under equal powder charge situation, the in-place blasting out radius increases 1～5 times;
(3) by design grooving spiral distance, controlled blasting block size is effectively avoided secondary blasting;
(4) reduce blasting vibration and explosion dust;
(5) reduce energy consumption, reduce cost and the reduction of erection time;
(6) existing grooving hole explosion only is used for straight line one-tenth seam explosion field, and purpose is the controlled blasting profile, and its technological difficulties are in the straight line control of grooving, and application of the present invention is a crushing Blasting, and is different with the hole explosion of existing grooving.In addition, helical cutting must not controlled the linearity of grooving, has avoided the difficult point of existing grooving hole explosion.
Description of drawings:
Fig. 1. the demolition method utilizing hole with spiral recess floor map;
Fig. 2. be the A-A profile of Fig. 1;
Fig. 3. the demolition method utilizing hole with spiral recess elevational schematic view;
Sequence number among the figure: (1) is by explosion rock mass face; (2) grooving subtended angle; (3) helical angle.
Number in the figure: R-big gun pore radius; H-spiral distance; The L-cutting groove depth.
Best way of the invention process:
1. adopt designed screw slotting instrument and the rotary cutter of Chongqing Univ. of Architecture's geotechnical study, blasting body is impacted grooving and the construction of rotation grooving.
2. by the construction of professional blasting engineering team.
Claims (5)
1. demolition method utilizing hole with spiral recess, straight line grooving blasting method at present commonly used, grooving on the circular hole wall, solve straight line and become seam explosion problem, feature of the present invention is to make a circular hole along axle band spiral seam grooving, and the parameters such as shape of the number of its grooving, helix pitch, grooving are determined according to the concrete condition of explosion object, its process characteristic is before explosion, utilize special-purpose pore-forming facility, materials such as rock or concrete are made band spiral fluted big gun hole, blasting charge explosion then.
2. demolition method utilizing hole with spiral recess as claimed in claim 1, it is characterized in that with the special spiral fluted cut instrument, make the big gun hole of spirality grooving, utilize methods such as impulsive force or rotation cutting, make one to several grooves that distributes with hole axle spiral at the circular hole periphery, charge explosion in band spiral fluted hole.
3. demolition method utilizing hole with spiral recess as claimed in claim 1 is characterized in that helical cutting aperture grooving is processed to form the grooving tip, and it is broken by quick-fried material to utilize the grooving point stresses to concentrate, and the explosion and crushing scope is increased.
4. demolition method utilizing hole with spiral recess as claimed in claim 1 is characterized in that design control spiral square, utilizes the grooving spiral apart from controlling by the broken block of quick-fried material.
5. demolition method utilizing hole with spiral recess as claimed in claim 1, it is characterized in that to rock, concrete hole, helical cutting, blasting charge explosion, broken explosion matter body, its aperture, big gun hole, charging means, the method for ignition etc. are all unrestricted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112144 CN1069759C (en) | 1998-07-15 | 1998-07-15 | Demolition method utilizing hole with spiral recess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112144 CN1069759C (en) | 1998-07-15 | 1998-07-15 | Demolition method utilizing hole with spiral recess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1241711A true CN1241711A (en) | 2000-01-19 |
| CN1069759C CN1069759C (en) | 2001-08-15 |
Family
ID=5222022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98112144 Expired - Fee Related CN1069759C (en) | 1998-07-15 | 1998-07-15 | Demolition method utilizing hole with spiral recess |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069759C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844292A (en) * | 2009-03-26 | 2010-09-29 | 株式会社昭和 | Processing method of slotted hole |
| CN103697775A (en) * | 2013-12-27 | 2014-04-02 | 武汉大学 | Method of loose blasting by high-pressure water jet helical cutting |
| CN106437721A (en) * | 2016-11-08 | 2017-02-22 | 湖北三宁矿业有限公司 | Construction method and structure for vertical shaft |
| WO2018149070A1 (en) * | 2017-02-15 | 2018-08-23 | 中国石油大学(北京) | Energy-concentrating and nest-shaped structure-forming bundle device for preventing lost circulation and reinforcing bore wall, and application thereof in prevention of lost circulation in karst cavity |
-
1998
- 1998-07-15 CN CN 98112144 patent/CN1069759C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844292A (en) * | 2009-03-26 | 2010-09-29 | 株式会社昭和 | Processing method of slotted hole |
| CN101844292B (en) * | 2009-03-26 | 2014-03-26 | 株式会社昭和 | Processing method of slotted hole |
| CN103697775A (en) * | 2013-12-27 | 2014-04-02 | 武汉大学 | Method of loose blasting by high-pressure water jet helical cutting |
| CN103697775B (en) * | 2013-12-27 | 2015-11-18 | 武汉大学 | A kind of high-pressure water jet helical cutting standing method |
| CN106437721A (en) * | 2016-11-08 | 2017-02-22 | 湖北三宁矿业有限公司 | Construction method and structure for vertical shaft |
| CN106437721B (en) * | 2016-11-08 | 2019-09-17 | 湖北三宁矿业有限公司 | The construction method and constructing structure of vertical shaft |
| WO2018149070A1 (en) * | 2017-02-15 | 2018-08-23 | 中国石油大学(北京) | Energy-concentrating and nest-shaped structure-forming bundle device for preventing lost circulation and reinforcing bore wall, and application thereof in prevention of lost circulation in karst cavity |
| US10822913B2 (en) | 2017-02-15 | 2020-11-03 | China University Of Petroleum-Beijing | Energy-gathered bundle type nesting plugging and wall reinforcing device and application thereof in karst cave plugging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1069759C (en) | 2001-08-15 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |