CN105444633A - Bench blasting charge structure capable of reducing block rate of blast hole blocking section - Google Patents
Bench blasting charge structure capable of reducing block rate of blast hole blocking section Download PDFInfo
- Publication number
- CN105444633A CN105444633A CN201510797195.1A CN201510797195A CN105444633A CN 105444633 A CN105444633 A CN 105444633A CN 201510797195 A CN201510797195 A CN 201510797195A CN 105444633 A CN105444633 A CN 105444633A
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- China
- Prior art keywords
- explosive
- blasting
- rock
- auxiliary
- blast hole
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- 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
Abstract
The invention belongs to the technical field of blasting methods, and relates to a step blasting charge structure capable of reducing the block rate of a blast hole blocking section, which is carried out according to the following steps: the first step is as follows: the main explosive is arranged in the blast hole, the charging amount of the main explosive is determined according to the unit consumption of the explosive corresponding to the hardness degree of the blasting rock, and the corresponding relation between the hardness degree of the rock and the unit consumption of the explosive is as follows: coefficient of rock firmnessWhen in use, the unit consumption of the explosive is 0.35-0.4kg/m 3; coefficient of rock firmnessWhen in use, the unit consumption of the explosive is 0.4-0.5kg/m 3; coefficient of rock firmnessWhen in use, the unit consumption of the explosive is 0.5-0.65kg/m 3; the second step is that: arranging auxiliary explosive packages at 1/2-2/3 parts of the blocking section in the blast hole, and assistingThe packaging dosage of the auxiliary medicine is calculated according to Q = KL3, and in the formula: q is the auxiliary medicine loading amount, kg; k is 0.08-0.10 kg/m3, and L is the total length of a blast hole blocking section, m; meanwhile, in order to avoid causing overlarge air shock waves and blasting flystones to damage a blasting network, the charging amount of the auxiliary explosive should not exceed 5 Kg; and the bottom of the main explosive bag and the bottom of the auxiliary explosive bag are respectively provided with an initiating explosive bag, and the initiating explosive bag adopts a reverse initiation mode.
Description
Technical field
The invention belongs to blasting method technical field, be specifically related to a kind of bench blasting charge constitution that can reduce multiple-row blasting section boulder yield.
Background technology
Top boulder yield is higher is ubiquitous problem in construction project bench blasting, find in practice, mostly this problem is that the reason such as bigger than normal by stem length in actual production, powder charge center of gravity is on the low side, explosive specific charge is low makes multiple-row blasting section position explosive energy deficiency cause.Therefore, adopt adequate measure, make the energy of explosive charge act on multiple-row blasting section rock mass comparatively uniformly, for strict bench blasting boulder yield on the whole, improve blasting quality tool and be of great significance.
Summary of the invention
Object of the present invention is exactly the charge constitution reducing multiple-row blasting section boulder yield when will provide a kind of bench blasting, improve blasting quality.
The present invention is achieved through the following technical solutions:
Can reduce a bench blasting charge constitution for multiple-row blasting section boulder yield, the method is carried out according to following step:
The first step: big gun arranges principal cartridge in hole, the principal cartridge explosive payload explosive specific charge corresponding according to the hardness of shot rock is determined, the hardness of rock and the corresponding relation of explosive specific charge are: rock consolidating coefficient
time, explosive specific charge gets 0.35-0.4kg/m
3; Rock consolidating coefficient
time, explosive specific charge gets 0.4-0.5kg/m
3; Rock consolidating coefficient
time, explosive specific charge gets 0.5-0.65kg/m
3;
Second step: the section of blocking 1/2 ~ 2/3 place arranges auxiliary cartridge bag in big gun hole, adjuvant packaging dose presses Q=KL
3calculate, in formula: Q is adjuvant packaging dose, kg; K gets 0.08 ~ 0.10kg/m
3, L is multiple-row blasting section total length, m; Meanwhile, for avoiding causing excessive air-shock wave and blasting flyrock to damage blasting network, adjuvant packaging dose should more than 5Kg;
3rd step: do not place igniting primer with auxiliary cartridge bag bottom part bottom principal cartridge, igniting primer adopts indirect initiation mode.
In order to better realize object of the present invention, this blasting arrangement explosive used is based on emulsion; Detonator mainly adopts msdelayed light emission on-electric detonator, and plastic detonating tube connects, pulse detonator detonates.
In order to better realize object of the present invention, the auxiliary cartridge bag of this blasting arrangement and principal cartridge need detonate simultaneously.
Compared with prior art, beneficial effect of the present invention is:
The present invention, by arranging the mode of auxiliary cartridge bag in multiple-row blasting section, on the one hand, enhances the explosion energy of multiple-row blasting section, makes top block section rock mass fully broken; On the other hand, the compaction formed after auxiliary cartridge bag explosion can reduce the loss of principal cartridge explosive energy, increases the explosive energy of middle and lower part, big gun hole to a certain extent, improves middle and lower part, big gun hole crushing effect.Meanwhile, this charge constitution is flexible, and tight in the duration, that construction task is heavy situation also can use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below the present invention is described further:
Can reduce a bench blasting charge constitution for multiple-row blasting section boulder yield, the method is carried out according to following step:
The first step: big gun arranges principal cartridge in hole, the principal cartridge explosive payload explosive specific charge corresponding according to the hardness of shot rock is determined, the hardness of rock and the corresponding relation of explosive specific charge are: rock consolidating coefficient
time, explosive specific charge gets 0.35-0.4kg/m3; Rock consolidating coefficient
time, explosive specific charge gets 0.4-0.5kg/m3; Rock consolidating coefficient
time, explosive specific charge gets 0.5-0.65kg/m3;
Second step: the section of blocking 1/2 ~ 2/3 place arranges auxiliary cartridge bag in big gun hole, adjuvant packaging dose is pressed Q=KL3 and is calculated, in formula: Q is adjuvant packaging dose, kg; K gets 0.08 ~ 0.10kg/m3, and L is multiple-row blasting section total length, m; Meanwhile, for avoiding causing excessive air-shock wave and blasting flyrock to damage blasting network, adjuvant packaging dose should more than 5Kg;
3rd step: do not place igniting primer with auxiliary cartridge bag bottom part bottom principal cartridge, igniting primer adopts indirect initiation mode.
In order to better realize object of the present invention, this blasting arrangement explosive used is based on emulsion; Detonator mainly adopts msdelayed light emission on-electric detonator, and plastic detonating tube connects, pulse detonator detonates.
In order to better realize object of the present invention, the auxiliary cartridge bag of this blasting arrangement and principal cartridge need detonate simultaneously.
Claims (3)
1. can reduce a bench blasting charge constitution for multiple-row blasting section boulder yield, the method is carried out according to following step:
The first step: big gun arranges principal cartridge in hole, the principal cartridge explosive payload explosive specific charge corresponding according to the hardness of shot rock is determined, the hardness of rock and the corresponding relation of explosive specific charge are: rock consolidating coefficient
time, explosive specific charge gets 0.35-0.4kg/m
3; Rock consolidating coefficient
time, explosive specific charge gets 0.4-0.5kg/m
3; Rock consolidating coefficient
time, explosive specific charge gets 0.5-0.65kg/m
3;
Second step: the section of blocking 1/2 ~ 2/3 place arranges auxiliary cartridge bag in big gun hole, adjuvant packaging dose presses Q=KL
3calculate, in formula: Q is adjuvant packaging dose, kg; K gets 0.08 ~ 0.10kg/m
3, L is multiple-row blasting section total length, m; Meanwhile, for avoiding causing excessive air-shock wave and blasting flyrock to damage blasting network, adjuvant packaging dose should more than 5Kg;
3rd step: do not place igniting primer with auxiliary cartridge bag bottom part bottom principal cartridge, igniting primer adopts indirect initiation mode.
2. a kind of bench blasting charge constitution that can reduce multiple-row blasting section boulder yield as claimed in claim 1, is characterized in that: this described blasting arrangement explosive used is based on emulsion; Detonator mainly adopts msdelayed light emission on-electric detonator, and plastic detonating tube connects, pulse detonator detonates.
3. a kind of bench blasting charge constitution that can reduce multiple-row blasting section boulder yield as described in claim 1-2, is characterized in that: the auxiliary cartridge bag of this described blasting arrangement and principal cartridge need detonate simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797195.1A CN105444633A (en) | 2015-11-18 | 2015-11-18 | Bench blasting charge structure capable of reducing block rate of blast hole blocking section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797195.1A CN105444633A (en) | 2015-11-18 | 2015-11-18 | Bench blasting charge structure capable of reducing block rate of blast hole blocking section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105444633A true CN105444633A (en) | 2016-03-30 |
Family
ID=55555115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510797195.1A Pending CN105444633A (en) | 2015-11-18 | 2015-11-18 | Bench blasting charge structure capable of reducing block rate of blast hole blocking section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105444633A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197181A (en) * | 2016-08-15 | 2016-12-07 | 钱和革 | A kind of liquid explosives hole spirit pad method of ignition |
| CN107367206A (en) * | 2017-09-16 | 2017-11-21 | 金堆城钼业集团有限公司 | A kind of blast charging structure and loading method |
| CN107957222A (en) * | 2017-11-28 | 2018-04-24 | 武汉大学 | Reduce blasthole spaced loading and the method for ignition of methods of blasting toes in open generation rate |
| CN109631698A (en) * | 2018-11-09 | 2019-04-16 | 北方爆破科技有限公司 | A kind of space interval charge explosion method reducing boulder yield |
| CN110779409A (en) * | 2019-09-17 | 2020-02-11 | 中国水利水电第四工程局有限公司 | Single-hole double-plug section type blasting method |
| CN110906822A (en) * | 2019-12-19 | 2020-03-24 | 中国水利水电第七工程局有限公司 | Deep hole blasting charge and detonation method for reducing root bottom based on digital detonator |
| 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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| CN202255143U (en) * | 2011-09-28 | 2012-05-30 | 内蒙古生力中伟爆破集团有限公司 | Spaced loading structure of blasthole |
| CN202274826U (en) * | 2011-06-29 | 2012-06-13 | 中国一冶集团有限公司 | Rock blasting blasthole loading structure |
| KR20150056706A (en) * | 2013-11-15 | 2015-05-27 | 주식회사 블라스텍 코리아 | Rock Blasting Method using pipes embeded in Explosive Layers of Blast waterhole |
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2015
- 2015-11-18 CN CN201510797195.1A patent/CN105444633A/en active Pending
Patent Citations (3)
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| CN202274826U (en) * | 2011-06-29 | 2012-06-13 | 中国一冶集团有限公司 | Rock blasting blasthole loading structure |
| CN202255143U (en) * | 2011-09-28 | 2012-05-30 | 内蒙古生力中伟爆破集团有限公司 | Spaced loading structure of blasthole |
| KR20150056706A (en) * | 2013-11-15 | 2015-05-27 | 주식회사 블라스텍 코리아 | Rock Blasting Method using pipes embeded in Explosive Layers of Blast waterhole |
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| Title |
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| 廖涛 等: ""露天矿中深孔爆破大块产生的原因及采取的措施"", 《化工矿物与加工》 * |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197181A (en) * | 2016-08-15 | 2016-12-07 | 钱和革 | A kind of liquid explosives hole spirit pad method of ignition |
| CN107367206A (en) * | 2017-09-16 | 2017-11-21 | 金堆城钼业集团有限公司 | A kind of blast charging structure and loading method |
| CN107367206B (en) * | 2017-09-16 | 2019-02-05 | 金堆城钼业集团有限公司 | A kind of blast charging method |
| CN107957222A (en) * | 2017-11-28 | 2018-04-24 | 武汉大学 | Reduce blasthole spaced loading and the method for ignition of methods of blasting toes in open generation rate |
| CN109631698A (en) * | 2018-11-09 | 2019-04-16 | 北方爆破科技有限公司 | A kind of space interval charge explosion method reducing boulder yield |
| CN110779409A (en) * | 2019-09-17 | 2020-02-11 | 中国水利水电第四工程局有限公司 | Single-hole double-plug section type blasting method |
| CN110906822A (en) * | 2019-12-19 | 2020-03-24 | 中国水利水电第七工程局有限公司 | Deep hole blasting charge and detonation method for reducing root bottom based on digital detonator |
| 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: 20160330 |