CN103644788B - A kind of coal mine roadway burn cut eye increases prestige loading method - Google Patents
A kind of coal mine roadway burn cut eye increases prestige loading method Download PDFInfo
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- CN103644788B CN103644788B CN201310594090.7A CN201310594090A CN103644788B CN 103644788 B CN103644788 B CN 103644788B CN 201310594090 A CN201310594090 A CN 201310594090A CN 103644788 B CN103644788 B CN 103644788B
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- blast hole
- snubber
- clay stemming
- clay
- stemming
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Abstract
A kind of coal mine roadway burn cut eye disclosed by the invention increases prestige charge constitution, is applicable to improve coal mine roadway burn cut quality, reduces boulder yield.Detonator and explosive are loaded the bottom of blast hole snubber, and payment to a porter is drawn outside blast hole, carry out blast hole shutoff with clay stemming; Described blast hole shutoff is divided into two sections of shutoff, and explosive in blast hole seals by the clay stemming one being first no less than 100mm with a section; Then load bubble bag in the blast hole after clay stemming one, then close blast hole snubber with clay stemming two after bubble bag, by real for snubber envelope.The clay stemming increased reduces confined space during explosive incipient detonation to the utmost, thus add the explosion first pressing of explosion gas, and then enhance the crushing effect of explosion gas to rock, increasing prestige is carried out in slotting effect in tunnel blasting, thus reduce the boulder yield of tunnel blasting, improve the blast hole utilization factor of tunnel blasting, improve slotting effect.
Description
Technical field
The present invention relates to a kind of coal mine roadway burn cut eye and increase prestige charge constitution, especially a kind of being applicable to strengthens the charge constitution that coal mine roadway burn cut eye breaks rock power, and this technology can reduce boulder yield effectively, and quick-fried heap is concentrated.
Background technology
The snubber charging means of current employing, snubber charge constitution adopts one section of clay stemming to close snubber, the stress wave that can not well utilize explosive charge to produce and detonation gas, make the useless dissipation in rock of a large amount of explosion energies, cause explosive service efficiency low, plasting damage effect is little, thus makes rock boulder yield high, casting distance is far away, and quick-fried heap is not concentrated.Therefore the charge constitution mode how designing snubber is particularly crucial.
Summary of the invention
The object of the invention is for Problems existing in prior art, the coal mine roadway burn cut eye providing a kind of method simple, easy to operate increases prestige charge constitution.
Coal mine roadway burn cut eye powder charge of the present invention increases prestige method, comprises bottom detonator and explosive being loaded blast hole snubber, payment to a porter is drawn outside blast hole, carry out blast hole shutoff with clay stemming; Described blast hole shutoff is divided into two sections of shutoff, and explosive in blast hole seals by the clay stemming one being first no less than 100mm with a section; Then load bubble bag in the blast hole after clay stemming one, then close blast hole snubber with clay stemming two after bubble bag, by real for snubber envelope, clay stemming two length setting closing snubber is as follows:
A, when the blast hole snubber degree of depth is 0.6 ~ 1.0m, closes clay stemming two length of blast hole snubber and must not be less than 1/2 of the blast hole snubber degree of depth;
B, when the blast hole snubber degree of depth is more than 1m, closing clay stemming two length of blast hole snubber must not be less than 0.5m;
C, when the blast hole snubber degree of depth is more than 2.5m, closing clay stemming two length of blast hole snubber must not be less than 1m.
Beneficial effect: the present invention is applicable to improve coal mine roadway burn cut quality, reduces boulder yield.Snubber is a circle borehole of innermost circle, and object first produces a vallecular cavity as second scope of freedom, the surface that rock contacts with air at working face, for other hole firing creates favorable conditions.In order to the energy making full use of snubber explosive carries out brokenly rock, throws rock, snubber charge constitution is in the past improved, adopts two envelope method snubbers to increase prestige charge constitution, make the charge constitution of snubber more reasonable, technique reduces the boulder yield of tunnel blasting, and quick-fried heap is concentrated.During powder charge, put to the bottom of snubber at explosive, adding one section of clay stemming is enclosed in bottom snubber by explosive, the clay stemming increased reduces confined space during explosive incipient detonation to the utmost, thus adds the explosion first pressing of explosion gas, and then enhances the crushing effect of explosion gas to rock, increasing prestige is carried out in slotting effect in tunnel blasting, thus reduce the boulder yield of tunnel blasting, improve the blast hole utilization factor of tunnel blasting, improve slotting effect.Solve the problem that explosive service efficiency is low, plasting damage effect is little existed in prior art well, reduce the boulder yield of coal mine roadway explosion, decrease throwing effect, and quick-fried heap can be made to concentrate, break by loading bubble bag when explosive charge and produce water curtain, effectively can play the effect of depositing dust.Its method is easy, easy to operate, has practicality widely.
Accompanying drawing explanation
Fig. 1 is that snubber of the present invention increases prestige charge constitution schematic diagram.
In figure: 1-detonator, 2-explosive, 3-clay stemming, 4-bubble bag, 5-clay stemming, 6-payment to a porter.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Coal mine roadway burn cut eye of the present invention increases prestige charge constitution, routinely to blast hole snubber, afterwards detonator 1 and explosive 2 is loaded the bottom of blast hole snubber, draws outside blast hole by payment to a porter 6, carry out blast hole shutoff with clay stemming; Described blast hole shutoff is divided into two sections of shutoff, first with one section of clay stemming 1 being no less than 100mm, explosive in blast hole 2 is enclosed in the bottom of snubber; Then in the blast hole after the clay stemming 1 being no less than 100mm, load bubble bag 4, bubble bag 4 breaks when explosive charge and produces water curtain, effectively can play the effect of depositing dust; After bubble bag 4, close blast hole snubber with clay stemming 25 again, by real for snubber envelope, clay stemming 25 length setting closing snubber is as follows:
A, when the blast hole snubber degree of depth is 0.6 ~ 1.0m, closes clay stemming 25 length of blast hole snubber and must not be less than 1/2 of the blast hole snubber degree of depth;
B, when the blast hole snubber degree of depth is more than 1m, closing clay stemming 25 length of blast hole snubber must not be less than 0.5m; Such as: when the degree of depth of blast hole snubber is 1.8m, then clay stemming 25 sealing clay length must not be less than 0.5m.
C, when the blast hole snubber degree of depth is more than 2.5m, closing clay stemming 25 length of blast hole snubber must not be less than 1m.
Claims (1)
1. coal mine roadway burn cut eye increases a prestige loading method, comprises bottom detonator (1) and explosive (2) being loaded blast hole snubber, payment to a porter (6) is drawn outside blast hole, carry out blast hole shutoff with clay stemming; It is characterized in that: described blast hole shutoff is divided into two sections of shutoff, first with one section of clay stemming one (3) being no less than 100mm, explosive in blast hole (2) is enclosed in the bottom of snubber; Then load bubble bag (4) in the blast hole after clay stemming one (3), bubble bag 4 breaks when explosive charge and produces water curtain, plays the effect of depositing dust; After bubble bag (4), close blast hole snubber with clay stemming two (5) again, by real for snubber envelope, clay stemming two (5) length setting closing snubber is as follows:
A, when the blast hole snubber degree of depth is 0.6 ~ 1.0m, closes clay stemming two (5) length of blast hole snubber and must not be less than 1/2 of the blast hole snubber degree of depth;
B, when the blast hole snubber degree of depth is more than 1m, closing clay stemming two (5) length of blast hole snubber must not be less than 0.5m;
C, when the blast hole snubber degree of depth is more than 2.5m, closing clay stemming two (5) length of blast hole snubber must not be less than 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594090.7A CN103644788B (en) | 2013-11-21 | 2013-11-21 | A kind of coal mine roadway burn cut eye increases prestige loading method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594090.7A CN103644788B (en) | 2013-11-21 | 2013-11-21 | A kind of coal mine roadway burn cut eye increases prestige loading method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103644788A CN103644788A (en) | 2014-03-19 |
| CN103644788B true CN103644788B (en) | 2016-02-10 |
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| CN201310594090.7A Expired - Fee Related CN103644788B (en) | 2013-11-21 | 2013-11-21 | A kind of coal mine roadway burn cut eye increases prestige loading method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983146B (en) * | 2014-05-16 | 2017-01-04 | 河南理工大学 | A kind of hard hard-rock tunnel medium-length hole mixing wedge shape segment algorithm directional fracture Cut Blasting method |
| CN104374239B (en) * | 2014-09-19 | 2016-03-02 | 葛洲坝易普力股份有限公司 | A kind of shot hole blasting obstruction method |
| CN105674819B (en) * | 2016-03-03 | 2017-10-10 | 秦健飞 | A kind of aqueous medium transducing blasting method and its powder charge chamber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155890A (en) * | 2011-01-24 | 2011-08-17 | 平顶山天安煤业股份有限公司十矿 | Filling method used in deep hole loosening blasting pressure release |
| CN203216394U (en) * | 2013-03-31 | 2013-09-25 | 永城煤电控股集团有限公司 | Novel air column charging structure for deading periphery holes |
| CN203249554U (en) * | 2013-05-21 | 2013-10-23 | 济宁矿业集团有限公司安居煤矿 | Smooth blasting device |
-
2013
- 2013-11-21 CN CN201310594090.7A patent/CN103644788B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155890A (en) * | 2011-01-24 | 2011-08-17 | 平顶山天安煤业股份有限公司十矿 | Filling method used in deep hole loosening blasting pressure release |
| CN203216394U (en) * | 2013-03-31 | 2013-09-25 | 永城煤电控股集团有限公司 | Novel air column charging structure for deading periphery holes |
| CN203249554U (en) * | 2013-05-21 | 2013-10-23 | 济宁矿业集团有限公司安居煤矿 | Smooth blasting device |
Non-Patent Citations (1)
| Title |
|---|
| 水不耦合装药结构在煤矿井巷掘进光面爆破中的应用;孙磊等;《爆破》;20100930;第27卷(第3期);第25页-第28页 * |
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| CN103644788A (en) | 2014-03-19 |
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