CN108489348B - A kind of deep hole and the knockdown hard rock air bench blasting method of short-bore - Google Patents
A kind of deep hole and the knockdown hard rock air bench blasting method of short-bore Download PDFInfo
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- CN108489348B CN108489348B CN201810098771.7A CN201810098771A CN108489348B CN 108489348 B CN108489348 B CN 108489348B CN 201810098771 A CN201810098771 A CN 201810098771A CN 108489348 B CN108489348 B CN 108489348B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of deep holes and the knockdown hard rock air bench blasting method of short-bore, this approach includes the following steps, first, the main quick-fried deep hole of diamond shape arrangement (Drilling) on stair working face, then short-bore is assisted in the quick-fried deep hole intermediate arrangement of master, and main quick-fried deep hole explosive length is the 57~63% of its hole depth, auxiliary short-bore dress length is the 15~20% of its hole depth；When detonation, main quick-fried deep hole and auxiliary short-bore are all made of bottom hole msdelayed light emission hole-by-hole initiation.This box-like (deep hole is combined with short-bore) the air bench blasting method of complex group can be effectively improved demolition effect of the superhard quick-fried rock mass of hardly possible without powder charge region (step top/top), reduce the boulder yield in quick-fried area, improve global blowup quality.Have the characteristics that drilling less, unit consumption is low, simple process, the activity duration is short, blasting efficiency is high and at low cost.
Description
Technical field
The present invention relates to a kind of deep hole and the knockdown hard rock air bench blasting method of short-bore, this method is widely used in
In large surface mine and all kinds of cubic metres of earth and stone removing engineering integrality preferably, it is fine and close, in hard extremely hard rock body bench blasting.
Background technique
Outdoor hard rock step long-hole blasting filling segment length accounts for blasthole overall length 1/3 or so, quick-fried due to filling section not blasting charge
Broken energy is unable to give full play the broken effect that causes, and boulder yield height, quick-fried heap poor morphology often occurs in blocking (filling) section at the top of quick-fried backward step
The problems such as (irregular), shovel dress low efficiency.To solve these problems, generally can by improve explosive specific charge, reduce Hole pattern parameters,
Increasing the approach such as single hole explosive payload, reduction blocking (filling) length is improved.But these methods are long there are the activity duration, drilling
Quantity is more, blasting cost is high, complex process, safety is low, concussion of blasting is big and demolition effect improves the problems such as space is limited.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of activity duration is short, drilling hole amount is few, blasting cost
Low, simple process, the group deep hole that highly-safe, concussion of blasting is small and the knockdown hard rock air bench blasting method of short-bore.
In order to solve the above-mentioned technical problem, a kind of deep hole and the knockdown hard rock air bench blasting method of short-bore, the party
Method specifically includes the following steps:
Step I, the explosiveness according to quick-fried region, boring apertureD, explosive specific chargeq, bank slopeα, drilling machine operation peace
Full berm widthB, step heightH 0Parameter determines the toe burden to quick-fried regionW, deep hole hole depthH, deep hole pitch-rowaAnd row
It refusesb；
Step II, the calculated result according to step I, diamond shape arranges hole depth on stair working faceH, deep hole pitch-rowa
With rejectbThe quick-fried deep hole of multiple masters；
Step III, the calculated result according to step I, in conjunction with unit consumptionq, step heightH 0Determine the quick-fried deep hole of the master
Every hole explosive payloadQ 1And packed heightH c；
Step IV is formed by geometric grid center Drilling short-bore in the quick-fried deep hole of step II institute Drilling master；
Step V, the explosiveness according to the rock mass to quick-fried region, rock mass longitudinal wave velocityC, rock density, pitch-row, reject ginseng
Number determines that the detonation of main quick-fried deep hole and auxiliary short-bore delays to be spaced；
Step VI places explosive (including priming bomb and digital electric according to step V calculated result in each hole
Detonator) and the burst time is set；Each deep hole explosive amount of gained is calculated according to step III, IV, the powder charge into each hole, then line rises
It is quick-fried.
Further, the quick-fried deep hole of the master and auxiliary short-bore are vertical holes, and aperture is identical.
Further, the quick-fried deep hole of the master is diamond shape arrangement, forms hole net unit, and all auxiliary short-bore are also diamond shape arrangement
Form hole net unit.
Further, the auxiliary short-bore is located at the friendship of quick-fried the formed diagonal of a parallelogram of deep hole hole net unit of the master
Point.
Further, the short-bore hole depthhFor deep hole packed heightH c1 ~ 1.2 times, shot elevationh cFor short-bore hole depthh's
15~20%, short-bore packed height is not less than short-bore hole depthh65%.
Further, the quick-fried deep hole explosive length of the master is the 57~63% of its hole depth.
Further, the quick-fried deep hole of the master uses bottom hole msdelayed light emission hole-by-hole initiation.
Further, the short-bore burst timeT cLess than millisecond time between the quick-fried deep hole row of masterT a。
Further, the quick-fried deep hole of the master and auxiliary short-bore are all made of digital electric detonator detonation.
Further, millisecond time between the quick-fried deep hole row of the masterT aWith Delay between holes intervalT bTime is not greater than 30ms, and main
Millisecond crushing blasting between quick-fried deep hole rowT aLess than Delay between holes interval timeT b。
Combined type (deep hole is combined with short-bore) hard rock air bench blasting method by adopting the above technical scheme has following
Advantage:
1, compared with traditional bench blasting, the number of the boring hole is significantly reduced, bore the quick-fried activity duration greatly shorten, technique it is simpler
It is single；
2, since hole count is reduced, priming system and explosive specific charge are lower, reduce explosion totle drilling cost, also reduce blasting flyrock
And the harm such as concussion of blasting；
3, using digital electric detonator relative to nonel tube, delay precision is higher, and millisecond delays to select and arrange in pairs or groups more
More, comprehensive demolition effect is more preferable.
4, short-bore and deep hole fill area are located at same level, and explosion Shi Nengyu deep hole blasting effect is mutually superimposed, can have
Effect improves the blasting quality of step deep hole fill area.
Detailed description of the invention
Fig. 1 is working face steel for shot schematic diagram of the invention.
Fig. 2 is working face steel for shot diagrammatic cross-section of the invention.
Fig. 3 is working face blast hole projectile filling diagrammatic cross-section of the invention.
Fig. 4 is working face blasthole burst time schematic diagram of the invention.
Fig. 5 is the working face steel for shot schematic diagram in specific embodiments of the present invention.
Specific embodiment
The invention will be further described with specific implementation step with reference to the accompanying drawing.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of deep hole of the present invention and the knockdown hard rock air bench blasting of short-bore
Method, this method specifically includes the following steps:
Step I, the explosiveness according to quick-fried region, boring apertureD, explosive specific chargeq, bank slopeα, drilling machine operation peace
Full berm widthB, step heightH 0Parameter determines the toe burden to quick-fried regionW, deep hole hole depthH, deep hole pitch-rowaAnd row
It refusesb；
Step II, the calculated result according to step I, diamond shape arranges hole depth on stair working faceH, deep hole pitch-rowa
With rejectbThe quick-fried deep hole of multiple masters；
Step III, the calculated result according to step I, in conjunction with unit consumptionq, step heightH 0Determine the quick-fried deep hole of the master
Every hole explosive payloadQ 1And packed heightH c；
Step IV is formed by geometric grid center Drilling short-bore in the quick-fried deep hole of step II institute Drilling master；
Step V, the explosiveness according to the rock mass to quick-fried region, rock mass longitudinal wave velocityC, rock density, pitch-row, reject ginseng
Number determines that the detonation of main quick-fried deep hole and auxiliary short-bore delays to be spaced；
Step VI places explosive (including priming bomb and digital electric according to step V calculated result in each hole
Detonator) and the burst time is set；Each deep hole explosive amount of gained is calculated according to step III, IV, the powder charge into each hole, then line rises
It is quick-fried.
Further, the quick-fried deep hole of the master and auxiliary short-bore are vertical holes, and aperture is identical.
Further, the quick-fried deep hole of the master is diamond shape arrangement, forms hole net unit, and all auxiliary short-bore are also diamond shape arrangement
Form hole net unit.
Further, the auxiliary short-bore is located at the friendship of quick-fried the formed diagonal of a parallelogram of deep hole hole net unit of the master
Point.
Further, the short-bore hole depthhFor deep hole packed heightH c1 ~ 1.2 times, shot elevationh cFor short-bore hole depthh's
15~20%, short-bore packed height is not less than short-bore hole depthh65%.
Further, the quick-fried deep hole explosive length of the master is the 57~63% of its hole depth.
Further, the quick-fried deep hole of the master uses bottom hole msdelayed light emission hole-by-hole initiation.
Further, the short-bore burst timeT cLess than millisecond time between the quick-fried deep hole row of masterT a。
Further, the quick-fried deep hole of the master and auxiliary short-bore are all made of digital electric detonator detonation.
Further, millisecond time between the quick-fried deep hole row of the masterT aWith Delay between holes intervalT bTime is not greater than 30ms, and main
Millisecond crushing blasting between quick-fried deep hole rowT aLess than Delay between holes interval timeT b。
Specific embodiment:
A kind of deep hole and the knockdown hard rock air bench blasting method of short-bore,
Step I is pacified according to the explosiveness in quick-fried region, boring aperture D, explosive specific charge q, bank slope α, drilling machine operation
Full berm width B, step height H0Etc. parameters, determine to the toe burden W in quick-fried region, deep hole hole depth H, deep hole pitch-row a and
Reject b；
Step II, as depicted in figs. 1 and 2, the diamond shape arrangement hole depth on stair working faceH, deep hole pitch-rowaWith rejectb's
Main quick-fried deep hole 1,2,3,4 etc., L12 =L34=a, L13 =L14= L42And the vertical range of hole 1 to 4 line of hole 3 and hole isb；
Step III, the calculated result according to step I, in conjunction with unit consumptionq, step height etc.H 0Determine the every hole dress section of deep hole
7 doseQ 1With the height of filling section 6H c, the length of main quick-fried deep hole explosive section 7 is the 57~63% of its hole depth；
Step IV, as shown in Figure 1, Figure 2 and Figure 3, be formed by several parallelogram in the quick-fried deep hole 1,2,3,4 of institute Drilling master
Diagonal line point of intersection Drilling short-bore 5, L15 =L54, L52 =L35Deep hole and short-bore are vertical holes, and aperture is identical, all short-bore
Also it is arranged for diamond shape；5 hole depth of short-borehFor 1 packed height of deep holeH c1 ~ 1.2 times, the height of powder charge section 9h cFor short-bore hole depthh's
15~20%, the height that short-bore fills section 8 is not less than short-bore hole depthh65%.
Step V, the explosiveness according to the rock mass to quick-fried region, rock mass longitudinal wave velocityC, rock density, pitch-row, reject
Parameter determines that the quick-fried deep hole of master and auxiliary short-bore detonation delay to be spaced；
Step VI places explosive (including priming bomb and digital electric according to step V calculated result in each hole
Detonator) and the burst time is set, as shown in figure 4, all blastholes use bottom hole msdelayed light emission hole-by-hole initiation.Assist short-bore 5 and phase
The adjacent quick-fried deep hole 1 of elder generation detonates simultaneously.Described quick-fried deep hole 1,2,3,4 of master etc. is all made of digital electric detonator detonation with auxiliary short-bore 5.
Millisecond time Ta(Ta=T3-T1=T4-T2 between the quick-fried deep hole row of master) and Delay between holes intervalT b(T b=T 2-T 1=T 4-T 3) time
It is not greater than 30ms.Millisecond crushing blasting between the quick-fried deep hole row of masterT aLess than Delay between holes interval timeT b.According to step III,
IV calculates each deep hole explosive amount of gained, and the powder charge into each hole, then line detonates.
Claims (10)
1. a kind of deep hole and the knockdown hard rock air bench blasting method of short-bore, which is characterized in that this method specifically include with
Lower step:
Step I, the explosiveness according to quick-fried region, boring apertureD, explosive specific chargeq, bank slopeα, drilling machine operation safety it is flat
Platform widthB, step heightH 0, determine the toe burden to quick-fried regionW, deep hole hole depthH, deep hole pitch-rowaAnd array pitchb；
Step II, according to the calculated result of step I, diamond shape arranges hole depth on stair working faceH, deep hole pitch-rowaAnd array pitchb's
Multiple quick-fried deep holes of master；
Step III, according to the calculated result of step I, in conjunction with unit consumptionq, step heightH 0Determine every hole powder charge of the quick-fried deep hole of the master
AmountQ 1And packed heightH c；
Step IV is formed by geometric grid center Drilling auxiliary short-bore in the quick-fried deep hole of step II institute Drilling master；
Step V, the explosiveness according to the rock mass to quick-fried region, rock mass longitudinal wave velocityC, rock density, pitch-row, array pitch parameter it is true
Surely it leads quick-fried deep hole and the detonation of short-bore is assisted to delay to be spaced；
Step VI places explosive, including priming bomb and digital electric detonator according to step V calculated result in each hole,
And the burst time is set；Each deep hole explosive amount of gained is calculated according to step III, IV, the powder charge into each hole, then line detonates.
2. deep hole according to claim 1 and the knockdown hard rock air bench blasting method of short-bore, which is characterized in that institute
The quick-fried deep hole of the master stated and auxiliary short-bore are vertical holes, and aperture is identical.
3. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the quick-fried deep hole of master is diamond shape arrangement, forms hole net unit, all auxiliary short-bore are also that diamond shape is arranged to form hole pattern list
Member.
4. deep hole according to claim 3 and the knockdown hard rock air bench blasting method of short-bore, which is characterized in that institute
State the intersection point that auxiliary short-bore is located at quick-fried the formed diagonal of a parallelogram of deep hole hole net unit of the master.
5. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the auxiliary short-bore hole depthhBased on quick-fried deep hole packed heightH c1 ~ 1.2 times, assist the packed height of short-boreh cFor auxiliary
Short-bore hole depthh15~20%, auxiliary short-bore packed height not less than auxiliary short-bore hole depthh65%.
6. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the quick-fried deep hole explosive length of master is the 57~63% of its hole depth.
7. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the quick-fried deep hole of master uses bottom hole msdelayed light emission hole-by-hole initiation.
8. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the auxiliary short-bore burst timeT cLess than millisecond time between the quick-fried deep hole row of masterT a。
9. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In the quick-fried deep hole of master and auxiliary short-bore are all made of digital electric detonator detonation.
10. deep hole according to claim 1 or 2 and the knockdown hard rock air bench blasting method of short-bore, feature exist
In millisecond time between the quick-fried deep hole row of masterT aWith Delay between holes intervalT bTime is not greater than 30ms, and micro- between main quick-fried deep hole row
Poor interval timeT aLess than Delay between holes interval timeT b。
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| CN108489348B true CN108489348B (en) | 2019-10-29 |
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| CN110595308B (en) * | 2019-09-20 | 2022-02-18 | 鞍钢集团矿业有限公司 | Method for treating goaf by ultra-deep hole blasting of strip mine |
| CN110823034A (en) * | 2019-11-25 | 2020-02-21 | 中交路桥建设有限公司 | Soft rock foundation blasting method capable of controlling mass percentage after blasting |
| CN112683120B (en) * | 2020-12-23 | 2021-09-03 | 中铁十九局集团矿业投资有限公司 | Method for blasting frozen soil layer of surface mine |
| CN115325895B (en) * | 2022-09-20 | 2024-07-19 | 鹤庆北衙矿业有限公司 | Strip mine side slope presplitting blasting layout structure |
| CN115979085B (en) * | 2023-03-07 | 2024-03-19 | 北京科技大学 | Liquid carbon dioxide blasting method suitable for open-air high steps |
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|---|---|---|---|---|
| EP0069817A2 (en) * | 1981-07-15 | 1983-01-19 | Arbed S.A. | Bulk blasting |
| RU2004119485A (en) * | 2004-06-25 | 2006-01-10 | Геннадий Буржалиевич Алиев (RU) | METHOD FOR DRILLING AND EXPLOSION WORKS |
| CN105135962A (en) * | 2015-08-21 | 2015-12-09 | 西北矿冶研究院 | Method for improving deep-hole step blasting quality of extremely hard rock |
| CN107328327A (en) * | 2017-08-31 | 2017-11-07 | 广东锡源爆破科技股份有限公司 | The soft or hard blast hole loading structure and its method for being mingled with beded rock mass Long-hole Bench Blasting |
-
2018
- 2018-01-31 CN CN201810098771.7A patent/CN108489348B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0069817A2 (en) * | 1981-07-15 | 1983-01-19 | Arbed S.A. | Bulk blasting |
| RU2004119485A (en) * | 2004-06-25 | 2006-01-10 | Геннадий Буржалиевич Алиев (RU) | METHOD FOR DRILLING AND EXPLOSION WORKS |
| CN105135962A (en) * | 2015-08-21 | 2015-12-09 | 西北矿冶研究院 | Method for improving deep-hole step blasting quality of extremely hard rock |
| CN107328327A (en) * | 2017-08-31 | 2017-11-07 | 广东锡源爆破科技股份有限公司 | The soft or hard blast hole loading structure and its method for being mingled with beded rock mass Long-hole Bench Blasting |
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