CN108132005A - A kind of method of short-delay blasting in medium-length hole upward hole - Google Patents
A kind of method of short-delay blasting in medium-length hole upward hole Download PDFInfo
- Publication number
- CN108132005A CN108132005A CN201711312207.2A CN201711312207A CN108132005A CN 108132005 A CN108132005 A CN 108132005A CN 201711312207 A CN201711312207 A CN 201711312207A CN 108132005 A CN108132005 A CN 108132005A
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- length
- detonator
- blasthole
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- 238000005422 blasting Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000002360 explosive Substances 0.000 claims abstract description 33
- 230000037452 priming Effects 0.000 claims abstract description 30
- 238000004880 explosion Methods 0.000 claims abstract description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 15
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 15
- 241001330002 Bambuseae Species 0.000 claims description 15
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 15
- 239000011425 bamboo Substances 0.000 claims description 15
- 239000000839 emulsion Substances 0.000 claims description 12
- 238000005474 detonation Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 241000668842 Lepidosaphes gloverii Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 235000020004 porter Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
-
- 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
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/22—Methods for holding or positioning for blasting cartridges or tamping cartridges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention belongs to metal mine technical fields, and in particular to a kind of method of short-delay blasting in medium-length hole upward hole；By arranging multistage priming bomb and bulk explosive into blasthole, and pass through the method that the control of blasthole escapement 4 carries out multistage explosion, solve the technical barrier that mine down-hole realized in medium-length hole blasting operation up-hole In-hole short delay explosion, it can be realized on medium-length hole to powder charge In-hole short delay explosion by the method, in medium-length hole blasting simultaneous shaft sin king, both loading rate is improved, in turn ensures demolition effect, it is ensured that the success of explosion Cheng Jing.
Description
Technical field
The invention belongs to metal mine technical fields, and in particular to a kind of method of short-delay blasting in medium-length hole upward hole.
Background technology
At present, in metal mine field of mining, Deep Hole Blasting is mainly used in stope and returns using more and more extensive
In adopting, but more and more mines use medium-length hole blasting simultaneous shaft sin king technology in the driving of cutting well, for upward hole
Explosion in be difficult to realize In-hole short delay explosion, generally carry out continuous charging into blasthole using explosive loader or fix powder stick
Sent on to bamboo pole in blasthole to realize spaced loading in hole.But effect is unsatisfactory in practical explosion, and continuous charging can make
Explosive payload is excessive, not only causes blasting cost excessively high but also can influence demolition effect, destroys periphery blasthole, backbreaks and owes to dig phenomenon
Seriously；The enterprising between-line spacing powder charge of bamboo pole is fixed on using powder stick, blocking is can not achieve between two sections of medicines, seriously affects explosion effect
Fruit, and powder charge process is complicated for operation, and labor intensity is big, low production efficiency.
Invention content
In order to overcome the above problem, the method that the present invention provides short-delay blasting in a kind of medium-length hole upward hole, to solve ore deposit
Mountain underground realized in medium-length hole blasting operation the technical barrier of up-hole In-hole short delay explosion, can be real by the method
To powder charge In-hole short delay explosion on existing medium-length hole, in medium-length hole blasting simultaneous shaft sin king, loading rate is both improved, is in turn ensured
Demolition effect, it is ensured that the success of explosion Cheng Jing.
In order to achieve the above object, technical scheme is as follows：
Step 1：Drilling up-hole, i.e. medium-length hole 1 will ensure that blasthole is vertical in boring procedure；
Step 2：Priming bomb 2 is made, and is sent priming bomb 2 to 1 bottom hole of medium-length hole, and observe powder charge using powder charge pipe 7
The depth of the length mark C record medium-length holes 1 of pipe 7, wherein priming bomb 2 include detonation shell case 21, detonator 22 and emulsion 23,
Emulsion 23 uses web-like emulsion, and priming bomb 2 is filled up, and detonator 22 is reversely inserted into emulsion 23, detonator 22
Upper included detonator wire 6；
Step 3：Using powder charge pipe 7 to 1 built-in bulk explosive 3 of medium-length hole, and according to blast hole depth and In-hole short delay hop count
It determines loaded length, until stopping powder charge during loaded length, and extracts powder charge pipe 7, that is, complete the arrangement of epimere explosive；
Step 4：Blasthole escapement 4 is sent to 3 lower section of bulk explosive in medium-length hole 1 and is contacted with bulk explosive 3,
Middle blasthole escapement 4 is made by thick bamboo tube, and the diameter of thick bamboo tube is less than blasthole internal diameter, and lower end breaks into bamboo clappers strip and formed admittedly
Fixed end 42 along thick bamboo tube axial direction Drilling detonator wire perforation 41, and its edge is polished smooth, and fixing end 42 is stuck in medium-length hole 1
Inside prevent blasthole escapement 4 from coming off, the detonator wire 6 at bottom hole on priming bomb 2 passes through blasthole by detonator wire perforation 41
Escapement 4；
Step 5：Next section of priming bomb 2 is made, structure is identical with the priming bomb 2 in step 2, uses powder charge pipe 7
The priming bomb 2 is sent to the lower section of blasthole escapement 4, the remainder into medium-length hole 1 of powder charge pipe 7 is reused and dispenses bulk explosive
3, stop powder charge when bulk explosive 3 is filled to away from 1 0.3~0.5m of aperture of medium-length hole, the detonator wire 6 on the priming bomb 2 extends
To the hole of medium-length hole 1, i.e., two sections of bulk explosives 3 are spaced apart by blasthole escapement 4；
Step 6：Blasthole is blocked using stemming 5, stemming 5 is filled in 1 aperture of medium-length hole, and is smash with tamper
Real, stemming length, to ensure multiple-row blasting quality, keeps detonator wire 6 to throw away outside the hole of indwelling medium-length hole 1 not less than 0.3m；
Step 7：In same big gun downhole explosion, the detonator 22 of the detonator 22 of epimere and hypomere detonates when different, hypomere
Detonator 22 first detonates, and the detonator 22 of re-detonating epimere after 50ms is spaced, if the depth of medium-length hole 1 cannot meet two sections of bulk explosives
When 3 interval detonations require, determine to need to set three sections or four sections of bulk explosives 3 according to blast hole depth and In-hole short delay hop count,
And it detonates successively from bottom to up, and a blasthole escapement 4 is respectively provided between every two sections of bulk explosives 3.
The powder charge pipe 7 is made of the hose of a diameter of 32mm, makes long scale every 1m using reflecting strips thereon
Know C, and mark its corresponding length.
The detonator 22 uses msdelayed light emission Nonel detonator.
Compared with prior art, advantages of the present invention is as follows：
Construction safety of the present invention is reliable, and method is simple and practicable, and adjustment flexibility is strong, overcomes on traditional medium-length hole to continuous
The problems such as powder charge and spaced loading formal operations are complicated, working efficiency is low, demolition effect is poor, realize on medium-length hole to powder charge hole
Interior short-delay blasting, ensure that demolition effect, solve the problems, such as that medium-length hole blasting simultaneous shaft sin king is highly restricted, and be medium-length hole
The popularization and application of explosion simultaneous shaft sin king technology provide technical guarantee.
Description of the drawings
Fig. 1 is implementation process schematic diagram of the present invention.
Fig. 2 is the structure diagram of blasthole escapement of the present invention.
Fig. 3 is priming bomb structure diagram of the present invention.
Fig. 4 is powder charge pipe structure diagram of the present invention.
Wherein：1 medium-length hole；2 priming bombs；21 detonation shell cases；22 detonators；23 emulsions；3 bulk explosives；4 blasthole intervals
Device；41 detonator wires are perforated；42 fixing ends；5 stemmings；6 detonator wires；7 powder charge pipes.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
The method of short-delay blasting, is as follows in a kind of medium-length hole upward hole：
Step 1：As shown in Figure 1, Drilling up-hole, i.e. medium-length hole 1, to ensure that blasthole is vertical in boring procedure；
Step 2：As shown in figures 1 and 3, priming bomb 2 is made, and is sent priming bomb 2 to 1 hole of medium-length hole using powder charge pipe 7
Bottom, and the depth of the length mark C record medium-length holes 1 of powder charge pipe 7 is observed, wherein priming bomb 2 includes detonation shell case 21, detonator
22 and emulsion 23, emulsion 23 uses web-like emulsion, and priming bomb 2 is filled up, and detonator 22 is reversely inserted into emulsification
In explosive 23, detonator wire 6 is carried on detonator 22；
Step 3：Using powder charge pipe 7 to 1 built-in bulk explosive 3 of medium-length hole, and according to blast hole depth and In-hole short delay hop count
It determines loaded length, until stopping powder charge during loaded length, and extracts powder charge pipe 7, that is, complete the arrangement of epimere explosive；
Step 4：Blasthole escapement 4 is sent to 3 lower section of bulk explosive in medium-length hole 1 and is contacted with bulk explosive 3, such as
Shown in Fig. 2, wherein blasthole escapement 4 is made by thick bamboo tube, and the diameter of thick bamboo tube is less than blasthole 5~10mm of internal diameter, bamboo
Tube length degree is 0.5m, and lower end breaks into bamboo clappers strip and forms fixing end 42, along the detonator of a diameter of 10mm of thick bamboo tube axial direction Drilling
Payment to a porter perforation 41, and its edge is polished smooth, fixing end 42, which is stuck in medium-length hole 1, prevents blasthole escapement 4 from coming off, bottom hole
The detonator wire 6 located on priming bomb 2 passes through blasthole escapement 4 by detonator wire perforation 41；
Step 5：As shown in figures 1 and 3, next section of priming bomb 2, structure and 2 phase of priming bomb in step 2 are made
Together, the priming bomb 2 is sent to the lower section of blasthole escapement 4 using powder charge pipe 7, it is remaining into medium-length hole 1 reuses powder charge pipe 7
Part dress bulk explosive 3, stops powder charge, on the priming bomb 2 when bulk explosive 3 is filled to away from 1 0.3~0.5m of aperture of medium-length hole
Detonator wire 6 is extended to outside the hole of medium-length hole 1, i.e., two sections of bulk explosives 3 are spaced apart by blasthole escapement 4；
Step 6：As shown in Figure 1, blocking blasthole using stemming 5, stemming 5 is filled in 1 aperture of medium-length hole,
And consolidated with tamper, stemming length, to ensure multiple-row blasting quality, keeps detonator wire 6 to throw away indwelling medium-length hole 1 not less than 0.3m
Hole outside.
As shown in figure 4, the powder charge pipe 7 is made of the hose of a diameter of 32mm, thereon using reflecting strips every 1m
Length mark C to be made, and marks its corresponding length, when powder charge 7 powder charge of pipe, needs to fill in powder charge pipe 7 to medium-length hole 1, and with
Powder charge pipe 7 is at the uniform velocity extracted in the progress of powder charge out.
The detonator 22 uses msdelayed light emission Nonel detonator.
In same big gun downhole explosion, the detonator 22 of the detonator 22 of epimere and hypomere detonates when different, the detonator 22 of hypomere
It first detonates, the detonator 22 of re-detonating epimere after 50ms is spaced, if the depth of medium-length hole 1 cannot meet two sections of bulk explosives 3 and be spaced
When detonation requires, determine to need to set three sections or four sections of bulk explosives 3, and under according to blast hole depth and In-hole short delay hop count
It is supreme to detonate successively, and it is respectively provided with a blasthole escapement 4 between every two sections of bulk explosives 3.
Claims (3)
1. a kind of method of short-delay blasting in medium-length hole upward hole, it is characterised in that include the following steps：
Step 1：Drilling up-hole, i.e. medium-length hole (1) will ensure that blasthole is vertical in boring procedure；
Step 2：Priming bomb (2) is made, and is sent priming bomb (2) to medium-length hole (1) bottom hole, and observe using powder charge pipe (7)
The depth of length mark (C) the record medium-length hole (1) of powder charge pipe (7), wherein priming bomb (2) include detonation shell case (21), detonator
(22) it is filled up with emulsion (23), emulsion (23) using web-like emulsion, and by priming bomb (2), detonator (22) is anti-
To being inserted into emulsion (23), detonator wire (6) is carried on detonator (22)；
Step 3：Using powder charge pipe (7) to medium-length hole (1) built-in bulk explosive (3), and according to blast hole depth and In-hole short delay section
The determining loaded length of number, until stopping powder charge during loaded length, and extracts powder charge pipe (7), that is, completes the arrangement of epimere explosive；
Step 4：Blasthole escapement (4) is sent to medium-length hole (1) interior bulk explosive (3) lower section and is connect with bulk explosive (3)
It touches, wherein blasthole escapement (4) is made by thick bamboo tube, and the diameter of thick bamboo tube is less than blasthole internal diameter, and lower end breaks into bamboo lath
Shape forms fixing end (42), perforates (41) along thick bamboo tube axial direction Drilling detonator wire, and its edge is polished smooth, fixing end
(42) being stuck in medium-length hole (1) prevents blasthole escapement (4) from coming off, and the detonator wire (6) at bottom hole on priming bomb (2) passes through
Detonator wire perforates (41) across blasthole escapement (4)；
Step 5：Next section of priming bomb (2) is made, structure is identical with the priming bomb (2) in step 2, uses powder charge pipe
(7) priming bomb (2) is sent to the lower section of blasthole escapement (4), reuses powder charge pipe (7) to medium-length hole (1) interior remainder
Bulk explosive (3) is dispensed, stops powder charge when bulk explosive (3) is filled to away from medium-length hole (1) 0.3~0.5m of aperture, the priming bomb
(2) detonator wire (6) on is extended to outside the hole of medium-length hole (1), i.e. blasthole escapement (4) is by two sections of bulk explosives (3)
It is spaced apart；
Step 6：Blasthole is blocked using stemming (5), at stemming (5) plug to medium-length hole (1) aperture, and uses tamper
Tamping, stemming length, to ensure multiple-row blasting quality, keep detonator wire (6) to throw away the hole of indwelling medium-length hole (1) not less than 0.3m
It is external；
Step 7：In same big gun downhole explosion, the detonator (22) of the detonator (22) of epimere and hypomere detonates when different, hypomere
Detonator (22) first detonates, and is spaced the detonator (22) of re-detonating epimere after 50ms, is dissipated if the depth of medium-length hole (1) cannot meet two sections
When the detonation of blasting charge (3) interval requires, determined that three sections or four sections of setting is needed to dissipate according to blast hole depth and In-hole short delay hop count
Blasting charge (3), and detonate successively from bottom to up, and a blasthole escapement is respectively provided between every two sections of bulk explosives (3)
(4)。
2. the method for short-delay blasting in a kind of medium-length hole upward hole as described in claim 1, it is characterised in that the powder charge
It manages (7) to be made of the hose of a diameter of 32mm, makes length mark C every 1m using reflecting strips thereon, and it is corresponding to mark it
Length.
3. the method for short-delay blasting in a kind of medium-length hole upward hole as described in claim 1, it is characterised in that the detonator
(22) using msdelayed light emission Nonel detonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312207.2A CN108132005B (en) | 2017-12-07 | 2017-12-07 | A kind of method of short-delay blasting in medium-length hole upward hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312207.2A CN108132005B (en) | 2017-12-07 | 2017-12-07 | A kind of method of short-delay blasting in medium-length hole upward hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108132005A true CN108132005A (en) | 2018-06-08 |
| CN108132005B CN108132005B (en) | 2019-09-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711312207.2A Active CN108132005B (en) | 2017-12-07 | 2017-12-07 | A kind of method of short-delay blasting in medium-length hole upward hole |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238060A (en) * | 2018-10-31 | 2019-01-18 | 唐山冀东启新水泥有限责任公司 | Airspace structure and method for mine blasting |
| CN111412798A (en) * | 2020-03-19 | 2020-07-14 | 安徽金日晟矿业有限责任公司 | Mining construction process for realizing one-step blasting forming of reversing table body of chute |
| CN114033373A (en) * | 2021-10-22 | 2022-02-11 | 武汉工程大学 | Raise boring machine-medium-length hole differential blasting cooperative one-time grooving method |
| CN114199091A (en) * | 2021-12-13 | 2022-03-18 | 攀钢集团工程技术有限公司 | Detonation cartridge device for upward medium-length hole and charge construction method |
| CN114526649A (en) * | 2021-12-16 | 2022-05-24 | 江睿 | Preparation method of simple ammonium nitrate fuel oil explosive for drilling |
| CN114526652A (en) * | 2022-03-11 | 2022-05-24 | 长沙矿山研究院有限责任公司 | Upward medium-length hole non-coupling charging structure and application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389015A (en) * | 2013-08-09 | 2013-11-13 | 贵州新联爆破工程集团有限公司 | Subsection millisecond differential blasting method in blasthole |
| CN103954182A (en) * | 2014-05-20 | 2014-07-30 | 武汉工程大学 | Upward blast hole stemming device for mine, and blast hole charging method |
| RU2563893C1 (en) * | 2014-09-10 | 2015-09-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | Method of detonation in open-cast minings of rock masses with different strength values |
| CN106767213A (en) * | 2017-01-18 | 2017-05-31 | 长沙有色冶金设计研究院有限公司 | A kind of Roof Control blasting method of soft broken top board ore body back production |
-
2017
- 2017-12-07 CN CN201711312207.2A patent/CN108132005B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389015A (en) * | 2013-08-09 | 2013-11-13 | 贵州新联爆破工程集团有限公司 | Subsection millisecond differential blasting method in blasthole |
| CN103954182A (en) * | 2014-05-20 | 2014-07-30 | 武汉工程大学 | Upward blast hole stemming device for mine, and blast hole charging method |
| RU2563893C1 (en) * | 2014-09-10 | 2015-09-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | Method of detonation in open-cast minings of rock masses with different strength values |
| CN106767213A (en) * | 2017-01-18 | 2017-05-31 | 长沙有色冶金设计研究院有限公司 | A kind of Roof Control blasting method of soft broken top board ore body back production |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238060A (en) * | 2018-10-31 | 2019-01-18 | 唐山冀东启新水泥有限责任公司 | Airspace structure and method for mine blasting |
| CN111412798A (en) * | 2020-03-19 | 2020-07-14 | 安徽金日晟矿业有限责任公司 | Mining construction process for realizing one-step blasting forming of reversing table body of chute |
| CN114033373A (en) * | 2021-10-22 | 2022-02-11 | 武汉工程大学 | Raise boring machine-medium-length hole differential blasting cooperative one-time grooving method |
| CN114033373B (en) * | 2021-10-22 | 2024-02-06 | 武汉工程大学 | Reverse well drilling machine-medium deep hole differential blasting collaborative primary grooving method |
| CN114199091A (en) * | 2021-12-13 | 2022-03-18 | 攀钢集团工程技术有限公司 | Detonation cartridge device for upward medium-length hole and charge construction method |
| CN114526649A (en) * | 2021-12-16 | 2022-05-24 | 江睿 | Preparation method of simple ammonium nitrate fuel oil explosive for drilling |
| CN114526652A (en) * | 2022-03-11 | 2022-05-24 | 长沙矿山研究院有限责任公司 | Upward medium-length hole non-coupling charging structure and application method |
| CN114526652B (en) * | 2022-03-11 | 2023-03-14 | 长沙矿山研究院有限责任公司 | Upward medium-length hole non-coupling charging structure and application method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108132005B (en) | 2019-09-17 |
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Address after: 130012 nanhu road, Jilin, Changchun, No. 6760 Patentee after: CHANGCHUN GOLD RESEARCH INSTITUTE Co.,Ltd. Address before: 130012 nanhu road, Jilin, Changchun, No. 6760 Patentee before: CHANGCHUN GOLD Research Institute |