CN104107609B - For the dig on a wide area explosion combination dust-removing method of Hydraulic and Hydro-Power Engineering - Google Patents
For the dig on a wide area explosion combination dust-removing method of Hydraulic and Hydro-Power Engineering Download PDFInfo
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- CN104107609B CN104107609B CN201410311352.9A CN201410311352A CN104107609B CN 104107609 B CN104107609 B CN 104107609B CN 201410311352 A CN201410311352 A CN 201410311352A CN 104107609 B CN104107609 B CN 104107609B
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Abstract
For a dig on a wide area explosion combination dust-removing method for Hydraulic and Hydro-Power Engineering, the method comprises the following steps: before 1) detonating, water filling in blast hole; 2) pressure pump is installed and organizes high-pressure spray gun more; 3) upstream and downstream in burst region river course all arranges across river spray header; 4) before detonating, carry out water spray to burst region ground to soak; 5) after detonating, the water injected in blast hole produces inhibitory action to the flue gas that explosion produces, and starts many group high-pressure spray gun water sprays immediately, covers the flue dust risen; 6) open river course upstream and downstream is arranged across river pipe, form water curtain, the dirt group namely completed dig on a wide area explosion in Hydraulic and Hydro-Power Engineering produces carries out effective depositing dust.Dig on a wide area explosion for Hydraulic and Hydro-Power Engineering provided by the invention combination dust-removing method, the problem of the harm such as dust, toxic gas when can solve the surface blasting of Hydraulic and Hydro-Power Engineering large area is economic environmental protection, effective fast.
Description
Technical field
The present invention relates to a kind of for dust-removing method during explosion, the especially a kind of combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method.
Background technology
In Construction for Hydroelectric Project, earthwork evacuation amount is very huge, as the construction part such as ship lock, dam abutment, foundation ditch all relate to large area surface blasting, can produce the environmental hazards such as a large amount of dust, toxic and harmful.Along with domestic haze weather is on the rise, environmental issue causes the more concerns of people, and large area surface blasting more and more can not be ignored the adverse effect that environment produces.Hydraulic and Hydro-Power Engineering, because the completion time of project is long, excavated volume is large, has become the emphasis of engineering construction field environmental protection, and the dust of wherein large area surface blasting generation, toxic gas harm are importances of environmental improvement.
In engineering explosion field, common depositing dust treatment measures, as chemical stemming method, surperficial water bag blasting procedure, wet scrubber etc., certain effect is had to tunnel, small size explosion depositing dust, but be not suitable for large area surface blasting, its dustfall efficiency is not high on the one hand, as the dustfall efficiency about 30% of surperficial water bag blasting procedure, and independent dust-removing method limited use; Cost is too high on the other hand, and efficiency is lower, is difficult to meet the economy of large area explosion, ageing requirement.Therefore must find a kind of economic environmental protection, combine depositing dust mode fast and effectively.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dig on a wide area explosion for Hydraulic and Hydro-Power Engineering combination dust-removing method, the problem of the harm such as dust, toxic gas when can solve the surface blasting of Hydraulic and Hydro-Power Engineering large area is economic environmental protection, effective fast.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method, and the method comprises the following steps:
1), before detonating, fill after explosive completes in blast hole, in blast hole after water filling, then shutoff is carried out to blast hole;
2) high slope in large area surface blasting region or top, precipice are installed pressure pump and organized high-pressure spray gun more;
3) upstream and downstream in burst region river course all arranges across river pipe, across hole for water spraying that river pipe gathers;
4) high-pressure spray gun is organized in startup more, sprays, the dust on burst region ground is soaked, to reduce airborne dust during explosion before detonating to burst region ground;
5), after detonating, the water injected in the blast hole ripple effect that is hit forms atomized steam, produces inhibitory action, starts immediately and organize high-pressure spray gun more, cover from the water smoke of eminence injection to the flue dust risen the flue gas that explosion produces;
6) when explosion produce dirt group along burst region river course diffusion or drift time, open river course upstream and downstream is arranged across river pipe, form water curtain, again fall and subtract trickle material thing in dirt group, the dirt group namely completed dig on a wide area explosion in Hydraulic and Hydro-Power Engineering produces carries out effective depositing dust.
Further, in step 1), when blast hole is vertical long hole, water flooding regime is direct water filling in blast hole, extremely from aperture 650 ~ 750mm;
When blast hole is horizontal blast hole, water flooding regime is the plastic seal water bag of filling same apertures in blast hole;
During shutoff, when blast hole is vertical long hole, water-resistant type stemming is adopted to carry out shutoff to the blast hole after water filling.When blast hole is horizontal blast hole, use common stemming shutoff.
Further, in step 3), across river pipe by being arranged on the upstream and downstream in burst region river course across river cable wire.
Quantity across river pipe is preferably at least two, and the water curtain of formation is more, and dust-laying effect is better.
Dig on a wide area explosion for Hydraulic and Hydro-Power Engineering combination dust-removing method provided by the invention, take three kinds of processes, utilize the depositing dust effect of steam, water smoke, water curtain, realize three stage depositing dusts before, during and after blast process, three-dimensional covering, multiple abatement are formed to dirt group, effectively reduces pernicious gas and the airborne dust of large area surface blasting.
Emulsion due to current extensive use has good water repelling property, and the water resistance of Nonel detonator is very reliable (generally after 20 meters of depth of waters are soaked for 72 hours still can reliable initiation) also, in blast hole water filling on Reliability of blasting without impact.After detonating, HTHP shock wave, by the water vapor in blast hole, forms the droplet of nano sized particles, and portion of water is in ionic condition, and Blasting dust and water particle collision, be conducive to fully absorption and dissolve blast toxic and harmful.This road technique plays first time depositing dust reducing poison function, can cut down major part blast toxic and harmful, can also reduce the airborne dust of blast to a certain extent.
High slope or top, precipice are installed pressure pump and organized high-pressure spray gun more, and spray gun range should be able to cover all burst region, and particle diameter and the direction of spray gun water outlet are adjustable, and many group high-pressure spray gun projected area will exceed area of explosion.Before explosion, burst region ground spray is soaked, the airborne dust of explosion time can be reduced; Immediately explosion dirt group water spray is covered after explosion, in blasting dust, the ratio regular meeting of different-diameter particle changes in time, coarse granule sedimentation is fast, SEDIMENTATION FOR FINE PARTICLE is slow, the drop particle diameter of spray gun water outlet should by first big after small adjustment, dust granules and water smoke through adsorbing, increasing weight, the process such as sedimentation, realize dust-laying effect.This road technique plays the effect of second time depositing dust, and it is upwards drifted by wind loose to suppress dirt to be rolled into a ball.
Major part Hydraulic and Hydro-Power Engineering is positioned at the geographical environment of riverine valley, high bank side slope, and river course forms natural air channel, the flue dust that explosion is formed under wind-force effect along river course drift.Therefore, all arrange in the upstream and downstream of burst region across river pipe, water pipe gathers hole for water spraying, and spray water flow after water flowing, forms the water curtain across cross section, river course, cuts down the dirt group along river course drift.Be suspended on across on the cable wire of river across river pipe, multiple tracks water curtain can be set, to strengthen dust-laying effect.This road technique plays third time depositing dust effect, jointly rolls into a ball dirt form three-dimensional covering with second technique.
The problem of the harm such as dust, toxic gas when can solve the surface blasting of Hydraulic and Hydro-Power Engineering large area, fast effectively; The blasting dust of 80% can be reduced, the blast toxic and harmful of abatement 70%.The medium that whole depositing dust process adopts is water, and resource is easy to get, from the horse's mouth, clean environment firendly.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the water filling filling schematic diagram in step 1) of the present invention when blast hole is vertical long hole;
Fig. 2 is the water filling filling schematic diagram in step 1) of the present invention when blast hole is lateral aperture;
Fig. 3 is step 2 of the present invention) many groups high-pressure spray gun schematic diagram of installing;
Fig. 4 is the schematic diagram of the water curtain that step 6) of the present invention is formed.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method, the method comprises the following steps:
1), before detonating, fill after explosive 1 completes in blast hole 4, in blast hole 4 after water filling 2, then shutoff is carried out to blast hole 4;
2) pressure pump and many group high-pressure spray guns 6 are installed in the high slope in large area surface blasting region or top, precipice 5;
3) all arrange across river pipe 9 at the upstream and downstream 7 in burst region river course, across hole for water spraying that river pipe 9 gathers;
4) start many group high-pressure spray guns 6, before detonating, burst region ground is sprayed, the dust on burst region ground is soaked, to reduce airborne dust during explosion;
5), after detonating, the water 2 injected in the blast hole 4 ripple effect that is hit forms atomized steam, and produce inhibitory action to the flue gas that explosion produces, start many group high-pressure spray guns 6 immediately, the water smoke sprayed from eminence covers the flue dust risen; Because high-pressure spray gun 5 is positioned at eminence, water spray fully adsorbs with dust in decline process, and can effectively suppress dust and spread to overhead, extends the action time of water smoke and dust, raising dust-laying effect, goes out can stop outside spray gun range until flue dust is elegant;
6) when explosion produce dirt group along burst region river course diffusion or drift time, open river course upstream and downstream 7 is arranged across river pipe 9, form water curtain 10, dirt group is through water curtain, again fall and subtract trickle material thing in dirt group, the dirt group namely completed dig on a wide area explosion in Hydraulic and Hydro-Power Engineering produces carries out effective depositing dust.Current after water curtain 10 depositing dust, directly pass back into river course 8.
In step 1), when blast hole 4 is vertical long hole, water flooding regime is direct water filling 2 in blast hole 4, extremely from aperture 650 ~ 750mm.
In step 1), when blast hole 4 is horizontal blast hole, water flooding regime is the plastic seal water bag 11 of filling same apertures in blast hole 4.
In step 1), the blast hole 4 after the 3 pairs of water fillings of water-resistant type stemming is adopted to carry out shutoff.When horizontal blast hole filled plastics sealed water bag, common stemming shutoff can be used.
In step 3), across river pipe 9 by being arranged on the upstream and downstream 7 in burst region river course across river cable wire.
Quantity across river pipe 9 is at least two, and the water curtain of formation is more, and dust-laying effect is better.
Claims (6)
1., for a dig on a wide area explosion combination dust-removing method for Hydraulic and Hydro-Power Engineering, it is characterized in that the method comprises the following steps:
1), before detonating, after filling explosive (1) completes in blast hole (4), after blast hole (4) interior water filling (2), then shutoff is carried out to blast hole (4);
2) pressure pump is installed and organizes high-pressure spray gun (6) more in the high slope or top, precipice (5) of Hydraulic and Hydro-Power Engineering;
3) all arrange across river pipe (9) at the upstream and downstream (7) in burst region river course, across the upper hole for water spraying that gathers of river pipe (9);
4) high-pressure spray gun (6) is organized in startup more, sprays before detonating to burst region ground, makes the dust on burst region ground form pureed, to reduce airborne dust during explosion;
5), after detonating, the water (2) injected in blast hole (4) the ripple effect that is hit forms atomized steam, produces inhibitory action, starts immediately and organize high-pressure spray gun (6) more, cover from the fine and closely woven current of eminence injection to the flue dust risen the flue gas that explosion produces;
6) when explosion produce dirt group along Hydraulic and Hydro-Power Engineering burst region river course diffusion or drift time, open river course upstream and downstream (7) upper arrange across river pipe (9), form water curtain (10), again fall and subtract trickle material thing in dirt group, the dirt group namely completed dig on a wide area explosion in Hydraulic and Hydro-Power Engineering produces carries out effective depositing dust.
2. the combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method according to claim 1, it is characterized in that: in step 1), when blast hole (4) is for vertical long hole, water flooding regime is directly water filling (2) in blast hole (4), extremely from aperture 650 ~ 750mm.
3. the combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method according to claim 1, it is characterized in that: in step 1), when blast hole (4) is for horizontal blast hole, water flooding regime is the plastic seal water bag (11) of filling same apertures in blast hole (4).
4. the combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method according to claim 1, is characterized in that: in step 1), adopts stemming (3) to carry out shutoff to the blast hole (4) after water filling.
5. the combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method according to claim 1, is characterized in that: in step 3), across river pipe (9) by being arranged on the upstream and downstream (7) in burst region river course across river cable wire.
6. the combination of the dig on a wide area explosion for Hydraulic and Hydro-Power Engineering dust-removing method according to claim 5, is characterized in that: the quantity across river pipe (9) is at least two, is distributed in the side, upstream and downstream of burst region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410311352.9A CN104107609B (en) | 2014-07-02 | 2014-07-02 | For the dig on a wide area explosion combination dust-removing method of Hydraulic and Hydro-Power Engineering |
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| CN201410311352.9A CN104107609B (en) | 2014-07-02 | 2014-07-02 | For the dig on a wide area explosion combination dust-removing method of Hydraulic and Hydro-Power Engineering |
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| CN104107609B true CN104107609B (en) | 2015-08-05 |
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|---|---|---|---|---|
| CN107254878B (en) * | 2017-07-06 | 2019-03-08 | 四川大学 | A kind of excavation method of hydroelectric project dam abutment high gradient slope control dust |
| CN109000524B (en) * | 2018-08-09 | 2021-11-05 | 长安大学 | Boundary control blasting method for reducing over-excavation and under-excavation |
| CN109373839A (en) * | 2018-12-14 | 2019-02-22 | 河北曲寨矿峰水泥股份有限公司 | Inhibit the method for fugitive dust in a kind of mine blasting |
| CN111023931B (en) * | 2020-01-03 | 2022-06-28 | 湘潭大学 | Layout structure and method for reducing concentration of mine blasting dust and harmful gas |
| CN112595189A (en) * | 2020-12-14 | 2021-04-02 | 安徽理工大学 | Method for preventing and treating blasting dust and blasting harmful gas |
| CN112709593A (en) * | 2020-12-23 | 2021-04-27 | 张俊 | Tunnel engineering mine method excavation blasting instantaneous dust fall process |
| CN112807901A (en) * | 2020-12-29 | 2021-05-18 | 安徽理工大学 | Blasting dust fall gasbag watering device |
| CN114109479A (en) * | 2021-11-19 | 2022-03-01 | 神华准格尔能源有限责任公司 | Open pit coal mine step loosening blasting dust fall method |
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