CN103075938A - Water stemming containing foaming agent - Google Patents
Water stemming containing foaming agent Download PDFInfo
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- CN103075938A CN103075938A CN2013100142972A CN201310014297A CN103075938A CN 103075938 A CN103075938 A CN 103075938A CN 2013100142972 A CN2013100142972 A CN 2013100142972A CN 201310014297 A CN201310014297 A CN 201310014297A CN 103075938 A CN103075938 A CN 103075938A
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- water stemming
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Abstract
The invention discloses water stemming which enables mining blasting to be safer. The water stemming comprises an outer packaging film (1) and liquid (2) which is sealed in the outer packaging film (1); the liquid (2) is an aqueous solution; and the aqueous solution contains 0.2 percent to 0.7 percent of foaming agent by the weight. The aqueous solution also contains 0.5 percent to 5 percent of sodium bicarbonate by the weight. The liquid in traditional water stemming is water, so that the effects of cooling, reducing dust, damping flame and reducing accident occurring rate are quite poor. According to the water stemming containing the foaming agent, the foaming agent or the sodium bicarbonate is additionally arranged in the water, so that the accident occurring rate can be reduced, the cooling, dust reducing and flame damping effects of the water stemming are better, and good popularization and application value as well as large-scale production are realized.
Description
Technical field
The invention belongs to the mining blasting technical field, be specifically related to a kind of water stemming material safer when making mining blasting.
Background technology
At present, the ratio that the output that big gun is adopted coal breakage accounts for national coal production is very high, and in more southern geology occurrence conditions poor area and little colliery, big gun is adopted coal breakage and is still important coal-mining method especially.
Because it is uneven that the blasting technology technology exists, the ratio of the demolition accident that causes thus and the gas that is caused by explosion, dust explosion accident is still high, is one of principal element of colliery initiation serious accident.Wherein the shutoff bad accident that causes in big gun hole accounts for more than 25%, and therefore studying rational method for blocking and using new water stemming to substitute traditional water stemming material is the important means that solves demolition accident.
In the coal mine underground explosion operation, early stage mouth-sealing method is to use home built yellow mud shutoff big gun hole.The making of yellow mud is with general yellow clay, mixes a certain proportion of fine sand, adds water and rubs and be made.Making is wasted time and energy, because requirement is large, crudy is relatively poor, labor strength is large, sealing clay often occurs under-supply, loads unreal or is interrupted the phenomenon such as sealing clay, be difficult to make the shutoff quality to reach more rational designing requirement, affect shotfiring safety and demolition effect.
Produce the machinery of stemmings although occurred now some on the market, the stemming of can comparision of production neat different size, in the majority as the stemming of primary raw material take the production yellow mud, still there are flame arrest, the relatively poor phenomenon of dust-laying effect in the blasting process.
At present, the wrapping film of traditional water stemming material is to be made inner filling water with common polyethylene film.During with traditional water stemming material shutoff big gun hole, because traditional water stemming material only contains a certain amount of water, so only play certain cooling, dust-laying effect.And because the traditional used packing film strength of water stemming material and density are less, intensity is low, percentage elongation is higher, described yielding and infiltration, can not fully contact with the big gun hole wall after the distortion, do not have the effect of good plugging action and raising coal blasting, the more important thing is the effect that in the colliery blasting operation, substantially can not play flame arrest.In the underground blasting operation, each big gun hole, although shutoff is good, but in the moment of implementation of blasting, it is quite weak that fire point position, big gun hole remains, and the loaded hole of direct initiation particularly is in case shutoff is bad, the detonation product of shock wave at a high speed and HTHP will at first be gone out along place, big gun hole, and is accidents caused.
Summary of the invention
Technical problem to be solved by this invention provides a kind of water stemming material safer when making mining blasting.
The technical solution adopted for the present invention to solve the technical problems is: contain the water stemming material of blowing agent, comprise wrapping film and be sealed in the interior liquid of wrapping film, liquid is the aqueous solution, and the aqueous solution contains blowing agent 0.2～0.7% by weight.
Wherein, blowing agent described in the above-mentioned water stemming material is natrium nitrosum.
Further, the aqueous solution contains natrium nitrosum 0.3～0.5% by weight.
Wherein, in the above-mentioned water stemming material, the aqueous solution also contains sodium acid carbonate 0.5～5% by weight.
Further, the aqueous solution contains sodium acid carbonate 1～3% by weight.
Wherein, in the above-mentioned water stemming material, described wrapping film is PE dry type composite membrane.
The invention has the beneficial effects as follows: during bursting work, use traditional water stemming material easily accidents caused, the present invention adds 0.2～0.7% blowing agent in water, blowing agent can produce a certain amount of bubble, and the bubble main component is inert gas (can be not combustion-supporting), can make water stemming material keep more strong state, make the shutoff of big gun hole better, the incidence of reduction accident, safer when making explosion, also can promote the effect of cooling, depositing dust and the flame arrest of water stemming material.Also contain 0.5～5% sodium acid carbonate in the aqueous solution of water stemming material of the present invention, sodium acid carbonate can produce nontoxic atmospheric carbon dioxide under high temperature action, so in big gun hole instant of detonation, the carbon dioxide gas cognition of volatilization is shrouded the detonation gas product, thereby block the burning of detonation gas and extraneous oxygen, further reduce the effect of cooling, depositing dust and the flame arrest of accident rate and raising water stemming material.Wrapping film of the present invention adopts commercially available high strength, high density PE dry type composite membrane, makes water stemming material not yielding, encapsulate tightlyer, and smooth in appearance is easy to load.
Description of drawings
Fig. 1 is the structural representation that the present invention contains the blowing agent water stemming material.
Be labeled as among the figure: the 1st, wrapping film, the 2nd, liquid.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
In the underground blasting operation, each big gun hole, although shutoff is good, but in the moment of implementation of blasting, it is quite weak that fire point position, big gun hole remains, and the loaded hole of direct initiation particularly is in case shutoff is bad, the detonation product of shock wave at a high speed and HTHP will at first be gone out along place, big gun hole, and is accidents caused.The present invention contains the water stemming material of blowing agent, as shown in Figure 1, comprises wrapping film 1 and the liquid 2 that is sealed in the wrapping film 1, and liquid 2 is the aqueous solution, and the aqueous solution contains blowing agent 0.2～0.7% by weight.Blowing agent can produce a certain amount of bubble, can make water stemming material keep more strong state, make the shutoff of big gun hole better, and the bubble main component is inert gas, can be not combustion-supporting, in big gun hole instant of detonation, can play the effect that certain blocking-up detonation gas contacts with extraneous oxygen, the incidence of reduction accident, safer when making explosion; Also can make the better effects if of cooling, depositing dust and the flame arrest of water stemming material.
Blowing agent of the present invention can be divided into inorganic and organic two classes, and is inorganic such as sodium acid carbonate, expanded perlite, hollow glass micro-ball etc.Organically such as H type blowing agent, AIBN type blowing agent, BSH type blowing agent, BDSH type blowing agent, DPT type blowing agent, blowing promotor etc.Preferably, reduce the better effects if of accident rate and flame arrest in order to make water stemming material, blowing agent described in the above-mentioned water stemming material is natrium nitrosum, and the Air Bubble Size that uses natrium nitrosum to produce is suitable, be evenly distributed, stable storing.。
Further preferred, the aqueous solution contains natrium nitrosum 0.3～0.5% by weight.
Preferably, in the above-mentioned water stemming material, the aqueous solution also contains sodium acid carbonate 0.5～5% by weight.Sodium acid carbonate can produce nontoxic atmospheric carbon dioxide under high temperature action, so in big gun hole instant of detonation, the carbon dioxide gas cognition of volatilization is shrouded the detonation gas product, thereby block the burning of detonation gas and extraneous oxygen, further reduce the effect of cooling, depositing dust and the flame arrest of accident rate and raising water stemming material.In addition, sodium acid carbonate and natrium nitrosum are used in combination, and can make at high temperature fast foaming of natrium nitrosum, improve the effect that natrium nitrosum reduces accident rate and flame arrest, have obtained unexpected technique effect.Further preferred, the aqueous solution contains sodium acid carbonate 1～3% by weight.
Preferably, in the above-mentioned water stemming material, described wrapping film 1 is PE dry type composite membrane.Wrapping film 1 of the present invention adopts commercially available high strength, high density PE dry type composite membrane, fusing point is higher than general polyethylene, about 126 ~ 136 ℃, is not only applicable to normal temperature environment and uses, also be applicable to simultaneously the operation of high temperature, high gas environment, applicable big gun hole temperature range is greatly about 0 ~ 90 ℃; Water stemming material of the present invention is not yielding, encapsulate tighter, smooth in appearance, be easy to the filling.
Water stemming material external diameter of the present invention and length can be adjusted arbitrarily production according to user's needs, and a certain amount of blowing agent and sodium acid carbonate are dissolved in water to be mixed, and carries out canned getting final product with PE dry type composite membrane.The canned RCEG-12Rotaclip packaging machine that adopts U.S. enlightening The Beta Co. to produce, abrasion resisting pump pumping can, production efficiency is high.To produce Ф 32-250mm or Ф 35-250mm stemming as example, per minute can be produced 300, can form large-scale production.
Below by embodiment the specific embodiment of the present invention is further described, but therefore the scope of the invention is not limited among the embodiment.
Embodiment one the present invention only contains the water stemming material of blowing agent
A certain amount of natrium nitrosum is dissolved in water mixes, then the RCEG-12Rotaclip packaging machine of sending into the production of U.S. enlightening The Beta Co. carries out canned, wrapping film 1 adopts commercially available PE dry type composite membrane, produces and obtains water stemming material, and the aqueous solution of water stemming material contains natrium nitrosum 0.37%.
The water stemming material that the present embodiment is obtained uses when coal mining, after explosive and detonator load by the explosion design instruction, and 3 water stemming materials of packing in each big gun hole, plug-hole after water stemming material, mainly with tabia or clay, according to straight warp and the length in big gun hole, all till stifled expiring.
The on-the-spot comparative test result of the water stemming material of the present embodiment and traditional water stemming material such as table 1.
Certain mine back production of table 1, the on-the-spot comparative test result of driving face
Embodiment two the present invention contain the water stemming material of blowing agent and sodium acid carbonate
A certain amount of natrium nitrosum and sodium acid carbonate be dissolved in water mix, then the RCEG-12Rotaclip packaging machine of sending into the production of U.S. enlightening The Beta Co. carries out canned, wrapping film 1 adopts commercially available PE dry type composite membrane, production obtains water stemming material, and the aqueous solution of water stemming material contains natrium nitrosum 0.4%, sodium acid carbonate 2%.
The water stemming material that the present embodiment is obtained uses when coal mining, after explosive and detonator load by the explosion design instruction, and 2 water stemming materials of packing in each big gun hole, plug-hole after water stemming material, mainly with tabia or clay, according to straight warp and the length in big gun hole, all till stifled expiring.
The on-the-spot comparative test result of the water stemming material of the present embodiment and traditional water stemming material such as table 2.
Certain mine back production of table 2, the on-the-spot comparative test result of driving face
Can find out from table 1 and 2, adopt the identical stemming of diameter to do experiment, novel water stemming material is compared with traditional water stemming material, and weight and length are all less in test, but obtained effect is but obviously different.Analyze demolition effect, with traditional water stemming shutoff and new water stemming shutoff obtained laneway molding and quick-fried heap situation, both are basically identical.But novel water stemming material is received obvious cooling, dust-laying effect, and the Dust Concentration rate of descent is minimum to be reached 37.2%, CO concentration and descend and reach 23.9%.CH
4Change in concentration is little, is because CH
4The source of gas mainly is coal seam itself, does not have direct relation with the shutoff mode.
Claims (6)
1. the water stemming material that contains blowing agent comprises wrapping film (1) and is sealed in the interior liquid (2) of wrapping film (1) that it is characterized in that: liquid (2) is the aqueous solution, and the aqueous solution contains blowing agent 0.2～0.7% by weight.
2. the water stemming material that contains blowing agent according to claim 1, it is characterized in that: described blowing agent is natrium nitrosum.
3. the water stemming material that contains blowing agent according to claim 2, it is characterized in that: the aqueous solution contains natrium nitrosum 0.3～0.5% by weight.
4. according to claim 1, the 2 or 3 described water stemming materials that contain blowing agent, it is characterized in that: the aqueous solution also contains sodium acid carbonate 0.5～5% by weight.
5. the water stemming material that contains blowing agent according to claim 4, it is characterized in that: the aqueous solution contains sodium acid carbonate 1～3% by weight.
6. according to claim 1, the 2 or 3 described water stemming materials that contain blowing agent, it is characterized in that: described wrapping film (1) is PE dry type composite membrane.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107609A (en) * | 2014-07-02 | 2014-10-22 | 中国长江三峡集团公司 | Combined dust settling method for large-area excavation and explosion in water conservancy and hydropower project |
| CN104406472A (en) * | 2014-10-27 | 2015-03-11 | 武汉工程大学 | Blast hole plugging method for blasting engineering |
| CN105066804A (en) * | 2015-07-16 | 2015-11-18 | 湖南辰州矿业有限责任公司 | Mine water stemming bag and application of mine water stemming bag in borehole blockage |
| CN109307459A (en) * | 2018-12-06 | 2019-02-05 | 中电建路桥集团有限公司 | A kind of quick dust-removing method of explosion shock wave bubble |
| CN109631700A (en) * | 2018-12-06 | 2019-04-16 | 中电建路桥集团有限公司 | Shock wave bubble fast dust laying apparatus used in a kind of explosion |
| CN113526908A (en) * | 2021-06-25 | 2021-10-22 | 安徽理工大学 | Preparation and application method of water-containing flame-extinguishing stemming for coal mine blasting hole sealing |
| CN114264207A (en) * | 2021-08-16 | 2022-04-01 | 北方工业大学 | Automatic stemming plugging device for blast hole and blast hole plugging method |
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| CN102288077A (en) * | 2011-09-13 | 2011-12-21 | 孙玉泉 | Water stemming bag and method for sealing coal mine blast hole by utilizing same |
| CN102408875A (en) * | 2011-09-28 | 2012-04-11 | 韩林华 | Mining high efficiency blister mud dedusting additive |
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2013
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107609A (en) * | 2014-07-02 | 2014-10-22 | 中国长江三峡集团公司 | Combined dust settling method for large-area excavation and explosion in water conservancy and hydropower project |
| CN104107609B (en) * | 2014-07-02 | 2015-08-05 | 中国长江三峡集团公司 | For the dig on a wide area explosion combination dust-removing method of Hydraulic and Hydro-Power Engineering |
| CN104406472A (en) * | 2014-10-27 | 2015-03-11 | 武汉工程大学 | Blast hole plugging method for blasting engineering |
| CN105066804A (en) * | 2015-07-16 | 2015-11-18 | 湖南辰州矿业有限责任公司 | Mine water stemming bag and application of mine water stemming bag in borehole blockage |
| CN105066804B (en) * | 2015-07-16 | 2017-01-25 | 湖南辰州矿业有限责任公司 | Mine water stemming bag and application of mine water stemming bag in borehole blockage |
| CN109307459A (en) * | 2018-12-06 | 2019-02-05 | 中电建路桥集团有限公司 | A kind of quick dust-removing method of explosion shock wave bubble |
| CN109631700A (en) * | 2018-12-06 | 2019-04-16 | 中电建路桥集团有限公司 | Shock wave bubble fast dust laying apparatus used in a kind of explosion |
| CN109307459B (en) * | 2018-12-06 | 2020-08-04 | 中电建路桥集团有限公司 | Rapid dust fall method for blast shock wave water bubbles |
| CN113526908A (en) * | 2021-06-25 | 2021-10-22 | 安徽理工大学 | Preparation and application method of water-containing flame-extinguishing stemming for coal mine blasting hole sealing |
| CN114264207A (en) * | 2021-08-16 | 2022-04-01 | 北方工业大学 | Automatic stemming plugging device for blast hole and blast hole plugging method |
| CN114264207B (en) * | 2021-08-16 | 2024-01-09 | 北方工业大学 | Automatic stemming blocking device for blasthole and stemming blocking method |
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| CN103075938B (en) | 2015-11-25 |
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