CN102878875A - Secondary crushing blasting method of large rock masses - Google Patents
Secondary crushing blasting method of large rock masses Download PDFInfo
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- CN102878875A CN102878875A CN2012104151533A CN201210415153A CN102878875A CN 102878875 A CN102878875 A CN 102878875A CN 2012104151533 A CN2012104151533 A CN 2012104151533A CN 201210415153 A CN201210415153 A CN 201210415153A CN 102878875 A CN102878875 A CN 102878875A
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Abstract
The invention belongs to the technical field of surface mine blasting and mainly relates to a secondary crushing blasting method of large rock masses of a surface mine. The method has the advantages that the large-aperture blasting is selected, particularly, water is filled in blastholes, in addition, explosive charges are soaked in the water for blasting, the blasting energy of explosives can uniformly act on the periphery of the blasthole wall, the large rock masses are uniformly crushed, slungshot cannot be easily generated, the safety is good, and the blasting cost is saved.
Description
Technical field
The invention belongs to surface mine blasting technique field, what relate generally to is a kind of second-time breakage blasting method of surface mine large rock mass.
Background technology
At present, what in large surface mine the crushing Blasting of rock great majority are adopted is deep hole blasting, and blasthole diameter is generally 140mm～310mm, still can produce large rock mass after the explosion, and these large rock masses must carry out could shoveling dress after the second-time breakage, transporting.At present large rock mass second-time breakage blasting method mainly contains 2 kinds, a kind of is the small-bore explosion, namely use the hand-held drilling-in unit that large rock mass is holed, bore diameter is generally at 38～42mm, charge explosion again, the powder stick diameter is 32mm, and the shortcoming of this kind method is need to buy hand-held drilling-in unit and small-sized air compressor, and workman's labour intensity of holing is large.The 2nd, the large aperture explosion, namely use down-the-hole drill (rig that normal explosion is used) that large rock mass is holed, bore diameter is generally at 140～200mm, charge explosion again, the powder stick diameter is generally 90～110mm, and the shortcoming of this kind method is that powder charge is more concentrated, the explosive charge energy can be concentrated and act on the big gun hole wall that directly contacts with explosive, the lumpiness of fractured rock is inhomogeneous, and stone fling distance is far away, and potential safety hazard is large.
Summary of the invention
For existing problem in the existing blasting technique, the objective of the invention is to propose a kind of large rock mass second-time breakage blasting method, this method is selected to adopt the large aperture explosion and can make the explosion energy stepless action of explosive around the big gun hole wall, make large rock mass evenly broken, and be difficult for producing slungshot, security is good, saves blast cost.
The present invention is for realizing and achieve the above object, and the technical scheme of taking is:
A kind of second-time breakage blasting method of large rock mass, its concrete operation method and step gather: 1. with down-the-hole drill large rock mass is holed, bore diameter is 140～200mm, bore angle vertically downward or be tilted to down, bore angle should be more than or equal to 30 ° during inclined drill, and drilling depth is 3/5ths of large rock mass diameter; 2. pour water in the big gun hole, the height of water is 1/3rd of hole depth in the big gun hole; 3. make the detonating charge bag, 1 Nonel detonator is inserted in the emulsion or aqueous gels of band packing, and the payment to a porter of Nonel detonator is fixed on the cartridge bag, prevent from, the diameter of detonating charge bag is 90～110mm, explosive charge is definite according to the volume of large rock mass, and the explosive consumption of unit volume rock is 80～120g/m
3(formation hardness hour get minimum, get large value when formation hardness is large); 4. the detonating charge bag is put into the big gun hole, the blasting charge must be immersed under water, is positioned at the centre of big gun hole water level, can play make explosive the explosion energy stepless action around the big gun hole wall, catalase acts on uniformly; 5. the big gun hole is stopped up with tamper, stemming length is 2/3rds of blast hole depth, obstruction method is to stop up 2/3rds places to the big gun hole depth with the polybag that iron wire will be equipped with Rock Powder or loess, with the polybag that Rock Powder or loess are housed whole big gun hole remainder is filled up again; 6. evacuation appliance and personnel, line detonates, and equipment and personnel withdraw distance and carry out by the regulation of shotfiring safety rules.
The invention has the beneficial effects as follows: adopt the Large diameter borehole explosion, particularly in the big gun hole, pour water and the blasting charge is immersed in the water and detonate, can make the explosion energy stepless action of explosive around the big gun hole wall, make large rock mass evenly broken, be difficult for to produce slungshot, the good and saving blast cost of security.
Description of drawings
Fig. 1 is vertical hole powder charge schematic diagram;
Fig. 2 is inclination blast hole projectile filling schematic diagram.
Among the figure: 1, Nonel detonator; 2, detonating charge bag; 3, large rock mass; 4, big gun hole; 5, water.
The specific embodiment
By reference to the accompanying drawings, provide the specific embodiment of the present invention as follows:
As shown in Figure 1 and Figure 2, a kind of large rock mass second-time breakage blasting method, its implementation step is: 1. with down-the-hole drill large rock mass 3 is holed, bore diameter is 140～200mm, bore angle vertically downward or be tilted to down, bore angle should be more than or equal to 30 ° during inclined drill, and drilling depth is 3/5ths of large rock mass 3 diameters.2. pour water 5 in big gun hole 4, the height of water is 1/3rd of hole depth in the big gun hole 4.3. make detonating charge bag 2,1 Nonel detonator 1 is inserted in the emulsion bag or aqueous gels bag of band packing, and Nonel detonator 1 payment to a porter is fixed on the detonating charge bag 2, prevent from, the diameter of detonating charge bag 2 is 90～110mm, explosive charge is definite according to the volume of large rock mass, and the explosive consumption of unit volume rock is 80～120g/m
3(formation hardness hour get the small value, get large value when formation hardness is large).4. detonating charge bag 2 is put into big gun hole 4, cartridge bag must be immersed in water 5 times, is positioned at the centre of big gun hole 4 water levels, can play make explosive the explosion energy stepless action around the big gun hole wall, catalase acts on uniformly.5. big gun hole 4 is stopped up, stemming length is 2/3rds of blast hole depth, obstruction method is to stop up to the big gun hole 4 2/3rds dark places with the polybag that iron wire will be equipped with Rock Powder or loess, with the polybag that Rock Powder or loess are housed whole big gun hole 4 remainders is filled up again.6. evacuation appliance and personnel, line detonates, and equipment and personnel withdraw distance and carry out by the regulation of shotfiring safety rules.
Claims (2)
1. large rock mass second-time breakage blasting method is characterized in that: described a kind of large rock mass second-time breakage blasting method is:
(1) with down-the-hole drill to large rock mass (3) boring, bore diameter is 140～200mm, bore angle vertically downward or be tilted to down, bore angle should be more than or equal to 30 ° during inclined drill, drilling depth is 3/5ths of large rock mass (3) diameter;
(2) pour water (5) in big gun hole (4), the height of water is 1/3rd of hole depth in big gun hole (4);
(3) make detonating charge bag (2), 1 Nonel detonator (1) is inserted in the emulsion bag or aqueous gels bag of band packing, and Nonel detonator (1) payment to a porter is fixed on the detonating charge bag (2);
(4) detonating charge bag (2) is put into big gun hole (4), be immersed in the water (5), the detonating charge bag should be positioned at the centre position of big gun hole (4) water level;
(5) big gun hole (4) are stopped up, stemming length is 2/3rds of blast hole depth, obstruction method is that the polybag that with iron wire Rock Powder or loess will be housed first stops up to 2/3rds dark places of big gun hole (4), with the polybag that Rock Powder or loess are housed whole big gun hole (4) remainder is filled up again;
(6) evacuation appliance and personnel, line detonates.
2. a kind of large rock mass second-time breakage blasting method according to claim 1, it is characterized in that: the diameter of detonating charge bag (2) is 90～110mm, the explosive consumption of unit volume rock is 80～120g/m
3
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104151533A CN102878875A (en) | 2012-10-26 | 2012-10-26 | Secondary crushing blasting method of large rock masses |
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| CN2012104151533A CN102878875A (en) | 2012-10-26 | 2012-10-26 | Secondary crushing blasting method of large rock masses |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121829A (en) * | 2014-07-29 | 2014-10-29 | 王康太 | Method capable of improving blasting efficiency of explosives |
| CN105043177A (en) * | 2015-07-10 | 2015-11-11 | 中国科学院力学研究所 | Rock block cracking method and device |
| CN107762399A (en) * | 2017-11-24 | 2018-03-06 | 中交第二航务工程局有限公司 | Explosion coordinates rotary drilling rig deep layer one-step pore-creating construction method |
| CN112097578A (en) * | 2020-08-13 | 2020-12-18 | 葛洲坝易普力湖南二化民爆有限公司 | Method for controlling root bottom of open-pit limestone mine after blasting |
| CN112697000A (en) * | 2020-12-21 | 2021-04-23 | 吴珅 | Coal open-pit mining blasting method |
| CN112857156A (en) * | 2021-01-26 | 2021-05-28 | 宏大爆破工程集团有限责任公司 | Environment-friendly dust suppression blasting method for surface mine and water hole charging blasting method |
| CN112844776A (en) * | 2021-01-29 | 2021-05-28 | 安徽马钢张庄矿业有限责任公司 | Large ore crushing mechanism for intelligent mining engineering and use method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208810A (en) * | 1997-08-18 | 1999-02-24 | 中国地质大学（北京） | Equipment for blasting rock type materials |
| CN102493675A (en) * | 2011-11-24 | 2012-06-13 | 兰州大学 | Column charge hydraulic blasting demolition method |
-
2012
- 2012-10-26 CN CN2012104151533A patent/CN102878875A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208810A (en) * | 1997-08-18 | 1999-02-24 | 中国地质大学（北京） | Equipment for blasting rock type materials |
| CN102493675A (en) * | 2011-11-24 | 2012-06-13 | 兰州大学 | Column charge hydraulic blasting demolition method |
Non-Patent Citations (4)
| Title |
|---|
| 卢云等: "注水深度与爆效的相关性", 《爆破》 * |
| 张云鹏: "炮孔水压爆破及其应用", 《爆破器材》 * |
| 罗华平: "水压爆破法在露天矿大块二次爆破中的试验研究", 《冶金矿山设计与建设》 * |
| 黄金祥等: "水压爆破在二次破碎中的应用试验", 《化工矿物与加工》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121829A (en) * | 2014-07-29 | 2014-10-29 | 王康太 | Method capable of improving blasting efficiency of explosives |
| CN104121829B (en) * | 2014-07-29 | 2017-08-25 | 王康太 | The method for improving explosive blasting efficiency |
| CN105043177A (en) * | 2015-07-10 | 2015-11-11 | 中国科学院力学研究所 | Rock block cracking method and device |
| CN107762399A (en) * | 2017-11-24 | 2018-03-06 | 中交第二航务工程局有限公司 | Explosion coordinates rotary drilling rig deep layer one-step pore-creating construction method |
| CN112097578A (en) * | 2020-08-13 | 2020-12-18 | 葛洲坝易普力湖南二化民爆有限公司 | Method for controlling root bottom of open-pit limestone mine after blasting |
| CN112097578B (en) * | 2020-08-13 | 2023-02-21 | 葛洲坝易普力湖南二化民爆有限公司 | Method for controlling root bottom of open-pit limestone mine after blasting |
| CN112697000A (en) * | 2020-12-21 | 2021-04-23 | 吴珅 | Coal open-pit mining blasting method |
| CN112697000B (en) * | 2020-12-21 | 2022-11-22 | 鄂尔多斯市万兴隆工贸有限责任公司 | Coal open-pit mining blasting method |
| CN112857156A (en) * | 2021-01-26 | 2021-05-28 | 宏大爆破工程集团有限责任公司 | Environment-friendly dust suppression blasting method for surface mine and water hole charging blasting method |
| CN112857156B (en) * | 2021-01-26 | 2022-05-17 | 宏大爆破工程集团有限责任公司 | Environment-friendly dust suppression blasting method for surface mine and water hole charging blasting method |
| CN112844776A (en) * | 2021-01-29 | 2021-05-28 | 安徽马钢张庄矿业有限责任公司 | Large ore crushing mechanism for intelligent mining engineering and use method thereof |
| CN112844776B (en) * | 2021-01-29 | 2022-07-19 | 安徽马钢张庄矿业有限责任公司 | Large ore crushing mechanism for intelligent mining engineering and use method thereof |
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Application publication date: 20130116 |