CN203216394U - Novel air column charging structure for deading periphery holes - Google Patents
Novel air column charging structure for deading periphery holes Download PDFInfo
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- CN203216394U CN203216394U CN 201320152717 CN201320152717U CN203216394U CN 203216394 U CN203216394 U CN 203216394U CN 201320152717 CN201320152717 CN 201320152717 CN 201320152717 U CN201320152717 U CN 201320152717U CN 203216394 U CN203216394 U CN 203216394U
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- periphery hole
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Abstract
The utility model discloses a novel air column charging structure for deading periphery holes. The air column charging structure acts on the periphery holes, explosives and detonators are placed at the bottoms of the periphery holes, clay stemming and water stemming are arranged at the tops of the periphery holes, air columns are arranged between the water stemming and the explosives, lifting lines are arranged on the water stemming, penetrate the clay stemming and are led out of heels, and detonator leads penetrate the air columns, the water stemming and the clay stemming sequentially and are led out of heels. The lifting lines are cotton ropes. By the aid of the air column charging structure, hole walls can bear the long-time quasi-static pressure action during explosion of the periphery holes, the action time is prolonged, rock walls are stressed uniformly finally, the crushed zone range is reduced, the roadway forming is controlled, the periphery hole mark rate is improved, the smooth blasting forming effect is remarkable, the roadway guniting amount is reduced, materials and labor are reduced, and meanwhile, the attractiveness of roadways are improved.
Description
Technical field:
The utility model relates to a kind of novel stone drifting periphery hole air column charge constitution.
Background technology:
Under coal mine in the stone drifting process, the Forming Quality in tunnel to roadway support effect, material consumption,
Operating efficiency, tunnel looks have a significant impact, and in order to make laneway molding more near the design profile line, reduce the input of whitewashing material, guarantee production safety simultaneously, and it is of crucial importance to improve rock gangway big gun pick photoface exploision Forming Quality.
The principal element that influences tunnel photoface exploision moulding is that periphery hole eye trace rate is lower, have only the periphery hole of increasing eye trace rate, just can increase substantially the Forming Quality in big gun pick tunnel, the explosion of solid powder charge sealing clay is adopted in stone drifting explosion at present mostly, its catalase rate height, laneway molding is of poor quality.
The utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of reasonable in design, simple in structure, the crushed zone scope is little and laneway molding is good novel stone drifting periphery hole air column charge constitution is provided.
The technical solution of the utility model is: a kind of novel stone drifting periphery hole air column charge constitution, act on the periphery hole, the bottom of described periphery hole is placed with explosive and detonator, the top of described periphery hole is provided with clay stemming and water stemming material, it is air column between described water stemming material and the explosive, described water stemming material is provided with the lifting line, this lifting line passes and draws heel from clay stemming, be used for control sealing clay length, the detonator lead-in wire passes and draws heel successively from described air column, water stemming material and clay stemming.
The length of described explosive is 200mm, and the length of described air column is that the 1100mm(borehole depth calculates by 1800mm), the length of described water stemming material is 200mm, the length of described clay stemming is 300mm.
Described lifting line is lace cord, can control sealing clay length when the blashole charge sealing clay; Described explosive is that specification is the secondary water gel explosives for mine (T-320) of Φ 35 * 200mm, the heavy 250g of every volume, and described detonator is I～No. 8 metal-back millisecond delay electric detonators of III section.
The beneficial effects of the utility model are:
Hole wall bore the quasistatic pressure effect of long period when 1, the utility model can make the periphery hole explosion, prolonged action time, finally make crag stressed even, reduced the crushed zone scope, controlled laneway molding, improve periphery hole eye trace rate, the quick-fried molding effect of light is remarkable, reduces the whitewashing amount in tunnel, has both saved the material input, reduce artificial input again, also increased the attractive in appearance of tunnel simultaneously.
2, the utility model adopts cotton thread lifting water stemming material, guarantees stemming length 300mm, requires clay stemming to have certain viscosity and plasticity, can embrasure plugging is tight.
3, the utility model is reasonable in design, simple in structure, easy to operate, be applied to rock gangway, coal road driving, more can embody its molding effect for all kinds of chambers of construction, alcove and laneway opening, perforation etc., it is applied widely, be easy to promotion and implementation, have good economic benefit.
Description of drawings:
Fig. 1 is the schematic diagram of novel stone drifting periphery hole air column charge constitution.
The specific embodiment:
Embodiment: referring to Fig. 1, among the figure, the 1-detonator, the 2-explosive, the 3-periphery hole, 4-detonator lead-in wire, the 5-air column, the 6-water stemming material, the 7-clay stemming, 8-lifts line.
Novel stone drifting periphery hole air column charge constitution, act on the periphery hole 3, the bottom of periphery hole 3 is placed with explosive 2 and detonator 1, the heel of periphery hole 3 is provided with clay stemming 7 and water stemming material 6, be air column 5 between water stemming material 6 and the explosive 2, water stemming material 6 is provided with lifting line 8, and this lifting line 8 is through clay stemming 7 and draw heel, and detonator goes between 4 successively through air column 5, water stemming material 6 and clay stemming 7 and draw heel.
The length of clay stemming 7 is 300mm, and the length of water stemming material 6 is 200mm, and the length of air column 5 is that 1100mm(determines according to borehole depth), the length of explosive 2 is 200mm.
On the working face that colliery 14 exploiting field pedestrians go up a hill, construct altogether 54 at borehole, wherein, snubber 6 (every 4 volume medicine), reliever 20 (every 3 volume medicine), periphery hole 19 (every 1 volume medicine), 9 of end eyes (every 3 volume medicine), be total to powder charge 32.5kg, periphery hole all adopts the air column blasting technique to carry out powder charge.Explosive 2 and detonator 1 are placed into the bottom of periphery hole 3, then water stemming material 6 are sent into 300mm in the hole, it is motionless to hold lace cord on the other hand, with clay stemming 7 that the eyelet envelope is real more on the other hand.The clay stemming 7 that uses must be soft, and one to pinch be remodelled shape conveniently, and viscosity must be arranged, and guaranteeing to seal is that envelope is real, otherwise is easy to occur taking out the big gun phenomenon.
There are 17 of eye traces (totally 19 of periphery hole designs) in explosion rear perimeter edge eye 3, and whole photoface exploision effect is fine, and eye trace rate reaches 89.4%.
Its action principle is: when the detonation wave that explosive 2 instant of detonation produce is outwards propagated, at first touch air column 5, use air column 5 that kinetic energy has been arranged, formation has the air-shock wave of precipitous wave head, in intact air, propagate, when air-shock wave runs into hole wall, speed moment vanishing, kinetic energy is converted into quasistatic can be stored in the compressed air, in fact played cushioning effect, because the detonation wave impact kinetic energy is absorbed, cushions by air column, so the surge peak value that the big gun hole wall is subjected to obviously reduces; Effect along with detonation pressure, compressed air column begins to discharge the quasistatic energy of storage, and produce a large amount of gases, make hole wall bear the quasistatic pressure effect of long period, prolong action time, finally made crag stressed evenly, reduced the crushed zone scope, controlled laneway molding, apparent in view to the soft rock effect.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction, and any simple modification that every foundation technical spirit of the present utility model is done all still belongs in the scope of technical solutions of the utility model.
Claims (3)
1. novel stone drifting periphery hole air column charge constitution, act on the periphery hole, it is characterized in that: the bottom of described periphery hole is placed with explosive and detonator, the heel of described periphery hole is provided with water stemming material and clay stemming, it is air column between described water stemming material and the explosive, described water stemming material is provided with the lifting line, and this lifting line passes and draw heel from clay stemming, and the detonator lead-in wire passes and draw heel successively from described air column, water stemming material and clay stemming.
2. novel stone drifting periphery hole air column charge constitution according to claim 1, it is characterized in that: the length of described explosive is 200mm, the length of described air column is 1100mm, and the length of described water stemming material is 200mm, and the length of described clay stemming is 300mm.
3. novel stone drifting periphery hole air column charge constitution according to claim 1 and 2, it is characterized in that: described lifting line is lace cord, can control sealing clay length when the blashole charge sealing clay; Described explosive is that specification is the secondary water gel explosives for mine of Φ 35 * 200mm, the heavy 250g of every volume, and described detonator is I～No. 8 metal-back millisecond delay electric detonators of V section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152717 CN203216394U (en) | 2013-03-31 | 2013-03-31 | Novel air column charging structure for deading periphery holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152717 CN203216394U (en) | 2013-03-31 | 2013-03-31 | Novel air column charging structure for deading periphery holes |
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| CN203216394U true CN203216394U (en) | 2013-09-25 |
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| CN 201320152717 Expired - Fee Related CN203216394U (en) | 2013-03-31 | 2013-03-31 | Novel air column charging structure for deading periphery holes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335568A (en) * | 2013-07-01 | 2013-10-02 | 中国矿业大学 | Method for improving light exposure quality effect of coal mine tunnel periphery hole |
| CN103644788A (en) * | 2013-11-21 | 2014-03-19 | 中国矿业大学 | Power increasing powder charging method for coal mine roadway blasting cuthole |
| CN105674819A (en) * | 2016-03-03 | 2016-06-15 | 秦健飞 | Aqueous medium energy transition blasting method and charging cavity |
| CN109580265A (en) * | 2018-11-22 | 2019-04-05 | 北京建筑大学 | A kind of I-shaped wall pseudo-static experimental loading frame and its application method |
| CN111692934A (en) * | 2020-06-19 | 2020-09-22 | 何满潮 | Method for tunneling roadway by using single-fracture-surface instantaneous spalling device for peripheral holes |
-
2013
- 2013-03-31 CN CN 201320152717 patent/CN203216394U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335568A (en) * | 2013-07-01 | 2013-10-02 | 中国矿业大学 | Method for improving light exposure quality effect of coal mine tunnel periphery hole |
| CN103644788A (en) * | 2013-11-21 | 2014-03-19 | 中国矿业大学 | Power increasing powder charging method for coal mine roadway blasting cuthole |
| CN103644788B (en) * | 2013-11-21 | 2016-02-10 | 中国矿业大学 | A kind of coal mine roadway burn cut eye increases prestige loading method |
| CN105674819A (en) * | 2016-03-03 | 2016-06-15 | 秦健飞 | Aqueous medium energy transition blasting method and charging cavity |
| CN105674819B (en) * | 2016-03-03 | 2017-10-10 | 秦健飞 | A kind of aqueous medium transducing blasting method and its powder charge chamber |
| CN109580265A (en) * | 2018-11-22 | 2019-04-05 | 北京建筑大学 | A kind of I-shaped wall pseudo-static experimental loading frame and its application method |
| CN111692934A (en) * | 2020-06-19 | 2020-09-22 | 何满潮 | Method for tunneling roadway by using single-fracture-surface instantaneous spalling device for peripheral holes |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140331 |