CN103868426A - Method for blasting by adopting spaced loading technology - Google Patents
Method for blasting by adopting spaced loading technology Download PDFInfo
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- CN103868426A CN103868426A CN201210596086.XA CN201210596086A CN103868426A CN 103868426 A CN103868426 A CN 103868426A CN 201210596086 A CN201210596086 A CN 201210596086A CN 103868426 A CN103868426 A CN 103868426A
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Abstract
The invention discloses a method for blasting by adopting a spaced loading technology, and relates to the technical field of blasting. The method comprises the following steps: measuring a given blasting region; distributing holes, and determining the hole depths and angles according to measured data; drilling by adopting special drilling equipment, wherein the drilling depth and angle satisfy design requirements; performing spaced loading operation; filling and tamping a blast hole with rock powder; connecting a cap wire; blasting; performing post-blasting inspection. In the spaced loading, a drug column in a deep hole is partitioned into multiple segments which are isolated by middle spacing layers. By adopting the method, the loading height can be increased, the block rate on the upper part of the blast hole is reduced, blasting vibration is reduced, the unit loading energy utilization ratio is increased, the blasting quality is improved, and the unit loading consumption is lowered.
Description
Technical field:
The present invention relates to a kind of mine blasting and BLASTING TECHNOLOGY FOR DEMOLITION, be specifically related to a kind of method that adopts spaced loading technology to carry out explosion.
Background technology:
In the outdoor medium-length hole blasting exploitation of tradition, charge constitution adopts continuous charging structure more, and explosive is the structure type of linear distribution along big gun axially bored line.The great advantage of this structure is that technique is simple, time saving and energy saving, but it can distribute explosive to be more intensively placed in bottom, big gun hole, cause after explosion, the part rock mass that top, big gun hole is born produces more bulk, thereby reduces shipment efficiency, and increases secondary blasting expense.
Summary of the invention:
The object of this invention is to provide a kind of method that adopts spaced loading technology to carry out explosion, it can improve shot elevation, reduces the generation of top, big gun hole boulder yield, reduces blasting vibration, improves unit explosive energy utilization rate, improves blasting quality and reduces explosive specific charge.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: for given burst region, first measure; Next carries out cloth hole, determines hole depth and angle according to measuring the data obtained; The 3rd step adopts Special drilling equipment to carry out bore operation, and drilling depth and angle meet design requirement; The 4th stepping between-line spacing charging; The 5th step is clogged big gun hole tamping with rock dust; The 6th step connects detonator payment to a porter; The 7th step is detonated; The 8th step is carried out quick-fried rear inspection.
Described spaced loading is that the powder column in deep hole is divided into several sections, and every section of powder column separates with middle ware interlayer.
The present invention can promote explosive height, change linear charging density, improve explosive energy utilization rate, the shock wave that explosive blasting produces produces stress wave for the second time in the internal reflection of big gun hole, thereby big gun hole Fracture Networks around was just extended before gas boosts, although the pressure that can cause explosive to produce in hole reduce to some extent, under the repeated action of a series of aftershocks, the time that impactite masonry is used has increased 1-6 doubly, and catalase effect is increased.
The present invention can improve shot elevation, reduces the generation of top, big gun hole boulder yield, reduces blasting vibration, improves unit explosive energy utilization rate, improves blasting quality and reduces explosive specific charge.
The specific embodiment:
This specific embodiment is by the following technical solutions: for given burst region, first measure; Next carries out cloth hole, determines hole depth and angle according to measuring the data obtained; The 3rd step adopts Special drilling equipment to carry out bore operation, and drilling depth and angle meet design requirement; The 4th stepping between-line spacing charging; The 5th step is clogged big gun hole tamping with rock dust; The 6th step connects detonator payment to a porter; The 7th step is detonated; The 8th step is carried out quick-fried rear inspection.
Described spaced loading is that the powder column in deep hole is divided into several sections, and every section of air for powder column, rock slag or water separate.
Use air to carry out interval and be called airspace powder charge, the effect of air has following three: 1, reduced the surge pressure of explosion wave, reduced big gun hole excessively pulverizing of rock around;
2, rock is subject to after the effect of explosion wave, is also subject to pressure that explosion gas forms and from the back wave effect at the bottom of hole, big gun hole.In the time that the pressure of this secondary stress ripple exceedes the limit rupture strength (representing that crack further expands required pressure) of rock, the microfissure of rock will be further expanded.
3, extended the action time of stress, shock wave turns back to again in airspace after at the bottom of tamper or hole, due to the repeatedly effect of shock wave, when stress field is reinforced, also extend the action time (action time increase 2-5 doubly) of stress wave in rock.If airspace is placed in the middle of powder column, the stress wave peak value that explosive produces at two ends, airspace interacts and can produce the stress field of a reinforcement.
Just because of above-mentioned three kinds of effects of airspace, make Breaking Size of Rock more even.
Use water spacer, because water is incompressible medium, have respectively to compression commutation and evenly transmit the feature of blast pressure, at not only blasthole hole wall of detonation starting stage, and water-filling hole wall is subject to impact loading equally, and surge pressure declines more slow; To detonation after-stage, to follow explosion gas to expand and do work, the energy of putting aside in water discharges has strengthened catalase effect.
(flexible cushion can be made with the material of the low-density such as sawdust, high porosity to use flexible material interval, vacant lot; when its porosity and ring-type crack; by the compressibility of flexible cushion and the retardation of shock wave; greatly reduce the surge to bottom, big gun hole; reduced the destruction to hole bed rock stone, this charge constitution is mainly used in the Hydraulic and Hydro-Power Engineering to following basement rock needs protection at the bottom of hole.
This specific embodiment can promote explosive height, change linear charging density, improve explosive energy utilization rate, the shock wave that explosive blasting produces produces stress wave for the second time in the internal reflection of big gun hole, thereby big gun hole Fracture Networks around was just extended before gas boosts, although the pressure that can cause explosive to produce in hole reduce to some extent, under the repeated action of a series of aftershocks, the time that impactite masonry is used has increased 1-4 doubly, and catalase effect is increased.
This specific embodiment can improve shot elevation, reduces the generation of top, big gun hole boulder yield, reduces blasting vibration, improves unit explosive energy utilization rate, improves blasting quality and reduces explosive specific charge.
Claims (2)
1. adopt spaced loading technology to carry out a method for explosion, it is characterized in that, for given burst region, first measuring; Next carries out cloth hole, determines hole depth and angle according to measuring the data obtained; The 3rd step adopts Special drilling equipment to carry out bore operation, and drilling depth and angle meet design requirement; The 4th stepping between-line spacing charging; The 5th step is clogged big gun hole tamping with rock dust; The 6th step connects detonator payment to a porter; The 7th step is detonated; The 8th step is carried out quick-fried rear inspection.
2. a kind of method that adopts spaced loading technology to carry out explosion according to claim 1, is characterized in that described spaced loading is that the powder column in deep hole is divided into several sections, and every section of powder column separates with middle ware interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210596086.XA CN103868426A (en) | 2012-12-18 | 2012-12-18 | Method for blasting by adopting spaced loading technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210596086.XA CN103868426A (en) | 2012-12-18 | 2012-12-18 | Method for blasting by adopting spaced loading technology |
Publications (1)
| Publication Number | Publication Date |
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| CN103868426A true CN103868426A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210596086.XA Pending CN103868426A (en) | 2012-12-18 | 2012-12-18 | Method for blasting by adopting spaced loading technology |
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| CN (1) | CN103868426A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953671A (en) * | 2016-05-09 | 2016-09-21 | 中铁十六局集团第二工程有限公司 | Construction method for excavating siliceous slate stone side slope |
| CN112880502A (en) * | 2021-03-22 | 2021-06-01 | 广东锡源爆破科技股份有限公司 | Staggered spaced charging device and method for improving blasting bulkiness |
| CN114111483A (en) * | 2021-11-30 | 2022-03-01 | 广州铁路投资建设集团有限公司 | Can reduce demolition unit of deep basal pit stone square blasting bold rate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713624A (en) * | 2009-11-17 | 2010-05-26 | 广东爆破工程有限公司 | Explosion and crushing method for underground concealed rock ground drilling |
-
2012
- 2012-12-18 CN CN201210596086.XA patent/CN103868426A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713624A (en) * | 2009-11-17 | 2010-05-26 | 广东爆破工程有限公司 | Explosion and crushing method for underground concealed rock ground drilling |
Non-Patent Citations (2)
| Title |
|---|
| 何元等: "浅谈爆破设计的应用", 《江苏建材》, no. 4, 31 August 2012 (2012-08-31), pages 1 - 3 * |
| 宋钊等: "石方开挖施工工艺分析", 《科技与企业》, no. 16, 31 August 2012 (2012-08-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953671A (en) * | 2016-05-09 | 2016-09-21 | 中铁十六局集团第二工程有限公司 | Construction method for excavating siliceous slate stone side slope |
| CN112880502A (en) * | 2021-03-22 | 2021-06-01 | 广东锡源爆破科技股份有限公司 | Staggered spaced charging device and method for improving blasting bulkiness |
| CN114111483A (en) * | 2021-11-30 | 2022-03-01 | 广州铁路投资建设集团有限公司 | Can reduce demolition unit of deep basal pit stone square blasting bold rate |
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Application publication date: 20140618 |