CN108087015A - Prevent the foam preparation facilities and dedusting technique of Tunnel Blasting dust - Google Patents

Prevent the foam preparation facilities and dedusting technique of Tunnel Blasting dust Download PDF

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Publication number
CN108087015A
CN108087015A CN201810035092.5A CN201810035092A CN108087015A CN 108087015 A CN108087015 A CN 108087015A CN 201810035092 A CN201810035092 A CN 201810035092A CN 108087015 A CN108087015 A CN 108087015A
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China
Prior art keywords
foam
tunnel
preparation facilities
dust
foam preparation
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CN201810035092.5A
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CN108087015B (en
Inventor
陆新晓
朱红青
胡超
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/06Fluids used for spraying

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Cleaning In General (AREA)

Abstract

A kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust of the present invention, including water pipe, air hose, filter, portable integrated foam preparation facilities, foam pipeline, portable head cartridge, foam nozzle, mobile pulley, the integrated foam preparation facilities of movable type is made of jet stream adder, connecting tube, foam maker, foaming agent fluid reservoir and movable cart.Device is sucked the foaming agent in fluid reservoir using negative pressure, forms foam solution, with pressing wind mixed foaming in foam maker, generates dedusting foam, and by nozzle specially used injection, three-dimensional package dedusting is formed to blasting face.Water source needed for system is directly taken from tunnel water supply, wind is pressed to utilize explosion air drill wind regime, without being individually laid with pipeline, significantly simplify system, whole system is operated using portable, and reliability is high, and flexibility is strong, there is extremely strong applicability to the tunnel (urban subway tunnel, vcehicular tunnel and mining tunnel) of only head blast working, application prospect is very wide.

Description

Prevent the foam preparation facilities and dedusting technique of Tunnel Blasting dust
Technical field:
The foam preparation facilities and dedusting technique of present invention prevention Tunnel Blasting dust, are related to a kind of Tunnel Blasting mistake Journey dust-control method belongs to underground engineering technical field, in the explosions dust such as urban subway tunnel, vcehicular tunnel and mining tunnel field There is very strong applicability.
Background technology:
In recent years, with economic rapid development, Air Pollutant Emission increases, and haze weather frequency is existing, seriously damages people People's masses' health influences social harmony stabilization.The CPC Central Committee and the State Council pays much attention to prevention and control of air pollution work, is carried It is raised to the strategic height of the key measure of national Ecological Civilization Construction, in September, 2013, State Council's issue《Prevention and control of air pollution Action plan》, it is distinctly claimed the technical research for strengthening high-effective dust-removing and popularization and application, clean manufacturing of carrying out in an all-round way.
For more easily transport development needs or requirement of engineering, urban subway tunnel, vcehicular tunnel and mining tunnel Increasing, constructing metro tunnel method is numerous, but in rock matter area, conventional shield method and mechanical excavation has not applied to, and bores Quick-fried method is still main construction method, however, can generate largely free SiO in drill bursting construction2Dust, explosion moment concentration Up to 1500~2000mg/m3, dust on the one hand can cause professional pneumoconiosis, on the other hand, dust also easily induce metal, fibre Dimension, coal-dust explosion, cause the further expansion of disaster accident, therefore, Tunnel Blasting dust prevention and control responsibility is great, and task is difficult It is huge.
At present, substantial amounts of work has been done at the dust-proof aspect of Tunnel Blasting both at home and abroad, had from dedusting method to equipment means Many progress, existing dust control technology mainly have waterinfusion blasting to subtract dirt, ventilation dust discharge, dedusting fan and deduster dedusting, these Technology reduces blasting process dust concentration to a certain extent, but there is also apparent deficiencies.Such as waterinfusion blasting compared with stemming explosion Dustfall efficiency improves 60~70%, but its filling technical merit is more demanding;For dust discharge of divulging information, then optimal dust discharge must is fulfilled for Wind speed requirement, wind speed is too low, and dust discharge is ineffective, and wind speed is excessively high will to cause reentrainment of dust.
For this purpose, the present invention proposes this brand-new dedusting theory of Tunnel Blasting foam dust-removing, foam is as a kind of gas-liquid two Phase medium compared with water mist, has permeability is strong, it is big to connect dirt area, to stick dust ability strong efficiently to catch dirt characteristic, especially right The respirable dust of small particle has very strong Scavenging activity.
The content of the invention
For deficiency existing for existing tunnel explosion dedusting technology, the present invention is intended to provide a kind of prevention Tunnel Blasting dust Foam preparation facilities and dedusting technique, break through tunnel construction explosion foam dust-removing device reliability it is low, foam dust-removing effect Rate is low, and the technical bottleneck of operability difference simplifies foam preparation manipulation, improves technology applicability.
Technical solution:The invention discloses a kind of foam preparation facilities for preventing Tunnel Blasting dust and dust collecting process sides Method, foam dust-removing technique include water pipe, air hose, filter, portable integrated foam preparation facilities, foam pipeline, movable type Head cartridge, foam nozzle, mobile pulley, the integrated foam preparation facilities of movable type by jet stream adder, connecting tube, foam maker, Foaming agent fluid reservoir and movable cart composition.Wherein, water pipe is connected to portable integrated foam preparation facilities jet stream adder Input end, air hose is connected to the input end of portable integrated foam preparation facilities foam maker, and foam pipeline is connected to foaming The port of export of device, the end of foam pipeline are connected on portable head cartridge, are disposed on portable head cartridge multiple Foam nozzle.
Advantageous effect:Since the overlay area of foam is big, adhesiveness is strong, and wettability is good, and foam is to little particle respiratory Clearly, and since production bubble process institute water requirement is small, working face is less prone to ponding contamination phenomenon to the elimination effect of dust, Operating environment will significantly be taken on a new look, and whole set process system is operated using portable, and reliability is high, and flexibility is strong, quick-fried to only The tunnel of broken construction has extremely strong applicability.
Preferably, pressure water needed for portable integrated foam preparation facilities is directly taken from the special water supply in tunnel, on water pipe Filter is provided with, pressure wind utilizes the power wind regime of air drill used in explosion blast hole drilling, without being individually laid with water supply and air-supply pipeline.
Preferably, jet stream adder is fixed on foam maker in foaming agent fluid reservoir outside wall surface, is consolidated entirely through permanent magnet It is scheduled on movable cart.
Preferably, before explosion, head cartridge is placed in blasting face about 10m, after explosion in 30s, rapidly steeps production Device and head cartridge are advanced into away from 3~5m of working face, and are opened production bubble system immediately and foamed.
Preferably, foam jet support Design is tunnel cross-section shape, is close to tunnel outside wall surface, before and after mobile pulley Move freely, blast charging pallet can in the bracket between shuttle movement.
Preferably, design is there are three dust measuring point in tunnel, respectively positioned at tunnel return side, central axes and air duct side, three Measuring point is highly 1.7~1.8m, and measuring point is located at injection stent rear 3m, and every group of dust concentration is tested 3~4 times, be averaged.
Description of the drawings:
Fig. 1 is the present invention prevention foam preparation facilities of Tunnel Blasting dust and dedusting technique floor plan;
Fig. 2 is the present invention prevention foam preparation facilities of Tunnel Blasting dust and dedusting technique section layout drawing;
Fig. 3 is the portable integrated foam preparation facilities schematic diagram of the present invention.
In figure:1- water pipes;2- filters;3- air hoses;The portable integrated foam preparation facilities of 4-;5- foam pipelines;6- Portable head cartridge;7- foam nozzles;8- mobile pulleys;9- boreholes;10- air ducts;4-1- ejectors;4-2- connecting tubes;4- 3- foam makers;4-4- foaming agent fluid reservoirs;4-5- mobile handcarts.
Specific embodiment:
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust of disclosure of the invention, The technique include water pipe (1), air hose (2), filter (3), portable integrated foam preparation facilities (4), foam pipeline (5), Portable head cartridge (6), foam nozzle (7), mobile pulley (8).Technique connection mode is:Water pipe (1) is connected to movable type The input end of integrated foam preparation facilities jet stream adder (4-1), air hose (2) are connected to portable integrated foam preparation facilities hair The input end of bubbler (4-3), foam pipeline (5) are connected to the port of export of foam maker (4-3), the end of foam pipeline (5) It is connected on portable head cartridge (6), portable head cartridge (6) is disposed with multiple foam nozzles (7), foam nozzle above (7) quantity is advisable with 6~8.
As shown in Fig. 2, the portable integrated foam preparation facilities (4) of the present invention is by jet stream adder (4-1), connecting tube (4- 2), foam maker (4-3), foaming agent fluid reservoir (4-4) and movable cart (4-5) composition, wherein, jet stream adder (4-1) with Foam maker (4-3) is fixed in foaming agent fluid reservoir (4-4) outside wall surface, and movable cart (4- is fixed on entirely through permanent magnet 5) on.
Tunnel Blasting foam dust-removing operation principle:Pressure water and compressed air are via water pipe (1) and air hose (2), into shifting Dynamic formula integrates foam preparation facilities (4), negative pressure is formed in jet stream adder (4-1) using hydrodynamic force, by foaming agent fluid reservoir Foaming agent sucking water pipe in (4-2), forms foam solution, foam solution and pressure wind in foam maker (4-3) interior mixed foaming, generation is high Performance dedusting foam, dedusting foam enter portable head cartridge (6) through foam pipeline (5), and via dedicated bubble jet Head (7) forms foam hose stream, and partition blasting process dust loss path forms working face three-dimensional package, in the enclosed space Carry out depositing dust.
Pressure water needed for the integrated foam preparation facilities (4) of movable type is directly taken from the special water supply in tunnel, and pressure wind utilizes quick-fried The power wind regime of air drill, without being individually laid with water supply and air-supply pipeline, significantly simplifies foam dust-removing technique used in broken blast hole drilling System, the hydraulic pressure needed for work that foams are not less than 0.8MPa, and wind pressure is not less than 0.4MPa, and water pipe is provided with filter on (1) (2), maximum solid impurity diameter is no more than 0.2mm after filtering, prevents from blocking jet stream adder (4-1).
Before explosion, foam jet stent (6) is placed in about 10m in front of blasting face, after explosion in 30s, rapidly will Foam preparation facilities (4) and foam jet stent (6) are advanced into away from 3~5m of working face, and are opened production bubble system immediately and carried out Foaming, during foam jet, foam jet stent (6) needs holding position constant.
As shown in figure 3, foam jet stent (6) is designed as tunnel cross-section shape, it can be annular or trapezoidal, be close to tunnel Pipeline outer wall face reduces the dust that is generated in blasting process to the greatest extent from the escaping slot between foam jet stent (6) and tunnel wall surface, Foam jet stent (6) front and rear can be moved freely by the mobile pulley (8) of lower section, after implementing foam dust-removing, by foam jet Stent (6) and integrated foam preparation facilities (4) are moved to working face rear, while blast charging pallet is moved to working face, into The subsequent perforating of row, powder charge, bursting work, portable supporting structure ensure blast charging pallet freely wearing in tunnel Shuttle moves, without influencing normal bursting work process.
Variation of the Tunnel Blasting foam dust-removing effect by measuring dust concentration before and after explosion is evaluated, and is set altogether in tunnel Three dust measuring points are counted, dust measuring point A is located at the production bulb apparatus position of return side, and dust measuring point B is located at tunnel central axes, dust measuring point C is located at air duct side, and three measuring points are highly 1.7~1.8m (about personnel's average height), and measuring point is located at injection stent rear 3m, every group of dust concentration are tested 3~4 times, are averaged.
Since the overlay area of foam is big, adhesiveness is strong, and wettability is good, removing of the foam to little particle respirable dust Clearly, and since production bubble process institute water requirement is small, working face is less prone to ponding contamination phenomenon to effect, and operating environment will Significantly taken on a new look, whole set process system is operated using portable, and reliability is high, and flexibility is strong, to the lane of only head blast working Road, such as urban subway tunnel, vcehicular tunnel and mining tunnel field are respectively provided with extremely strong applicability, and application prospect is very wide It is wealthy.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (6)

1. the invention discloses a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust, the foam dust-removings Technique includes water pipe (1), air hose (2), filter (3), portable integrated foam preparation facilities (4), foam pipeline (5), shifting Dynamic formula head cartridge (6), foam nozzle (7), mobile pulley (8), wherein, the integrated foam preparation facilities (4) of movable type is by jet stream Adder (4-1), connecting tube (4-2), foam maker (4-3), foaming agent fluid reservoir (4-4) and movable cart (4-5) composition.Water Pipe (1) is connected to the input end of portable integrated foam preparation facilities jet stream adder (4-1), and air hose (2) is connected to foam maker The input end of (4-3), foam pipeline (5) are connected to the port of export of foam maker (4-3), the end connection of foam pipeline (5) On portable head cartridge (6), multiple foam nozzles (7) are disposed on portable head cartridge (6).
2. a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust according to claim 1, It is characterized in that, pressure water needed for the integrated foam preparation facilities (4) of movable type is directly taken from the special water supply in tunnel, and hydraulic pressure is not less than 0.8MPa is provided with filter (2) on water pipe (1), and pressure wind utilizes the power wind regime of air drill used in explosion blast hole drilling, and wind pressure is not low In 0.4MPa.
3. portable integrated foam preparation facilities according to claim 1, which is characterized in that jet stream adder (4-1) with Foam maker (4-3) is fixed in foaming agent fluid reservoir (4-4) outside wall surface, and movable cart (4- is fixed on entirely through permanent magnet 5) on.
4. a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust according to claim 1, It is characterized in that, before explosion, foam jet stent (6) is placed in about 10m in front of blasting face, after explosion in 30s, rapidly will Foam preparation facilities (4) and foam jet stent (6) are advanced into away from 3~5m of working face, and are opened production bubble system immediately and carried out Foaming.
5. a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust according to claim 1, It is characterized in that, foam jet stent (6) is designed as tunnel cross-section shape, is close to tunnel outside wall surface, front and rear by mobile pulley (8) Move freely, blast charging pallet can in the bracket between shuttle movement.
6. a kind of foam preparation facilities and dedusting technique for preventing Tunnel Blasting dust according to claim 1, It is characterized in that, design is there are three dust measuring point in tunnel, respectively positioned at tunnel return side, central axes and air duct side, three measuring point height Degree is 1.7~1.8m, and measuring point is located at injection stent rear 3m, and every group of dust concentration is tested 3~4 times, be averaged.
CN201810035092.5A 2018-01-15 2018-01-15 The foam preparation facilities and dedusting technique for preventing and treating Tunnel Blasting dust Expired - Fee Related CN108087015B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109162746A (en) * 2018-10-10 2019-01-08 南安市尚赢机械科技有限公司 A kind of cold area's rock tunnel construction acceleration air flowing dust exhaust apparatus
CN109339853A (en) * 2018-11-20 2019-02-15 西南交通大学 A kind of novel tunnel face explosion dust-extraction unit
CN110410075A (en) * 2019-07-31 2019-11-05 西安科技大学 A kind of full-mechanized roadway/constructing tunnel dust removal method and dust pelletizing system
CN111550276A (en) * 2020-05-23 2020-08-18 中电建十一局工程有限公司 Ventilating and dedusting method for traffic tunnel group excavation construction in hydropower station field
CN114278360A (en) * 2021-12-23 2022-04-05 中交路桥建设有限公司 Movable type dust blocking and trapping oxygen supply device and method based on tunnel construction operation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87106798A (en) * 1987-10-06 1988-03-16 湖北省劳动人事厅劳动保护科学技术研究所 Rock drilling bubble dust collector and foam dedusting agent
DE19938458A1 (en) * 1999-08-13 2001-03-01 Reinhard Schneider Sprinkler system for tunnels/mining galleries has a pipe to carry water/foam under pressure with swing jets each fitted with a thermal sensor to react rapidly to a fire outbreak and aim the jet at the seat of the fire automatically
CN102619510A (en) * 2012-04-12 2012-08-01 中国矿业大学 Adjustable jetting support for dust control of comprehensive mechanized excavation surface of mine
CN102847476A (en) * 2012-10-08 2013-01-02 中国矿业大学 Pneumatic jet-type proportional foaming device
CN104747227A (en) * 2013-12-31 2015-07-01 中国矿业大学(北京) Net type foam film dust removal system for underground coal mine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87106798A (en) * 1987-10-06 1988-03-16 湖北省劳动人事厅劳动保护科学技术研究所 Rock drilling bubble dust collector and foam dedusting agent
DE19938458A1 (en) * 1999-08-13 2001-03-01 Reinhard Schneider Sprinkler system for tunnels/mining galleries has a pipe to carry water/foam under pressure with swing jets each fitted with a thermal sensor to react rapidly to a fire outbreak and aim the jet at the seat of the fire automatically
CN102619510A (en) * 2012-04-12 2012-08-01 中国矿业大学 Adjustable jetting support for dust control of comprehensive mechanized excavation surface of mine
CN102847476A (en) * 2012-10-08 2013-01-02 中国矿业大学 Pneumatic jet-type proportional foaming device
CN104747227A (en) * 2013-12-31 2015-07-01 中国矿业大学(北京) Net type foam film dust removal system for underground coal mine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109162746A (en) * 2018-10-10 2019-01-08 南安市尚赢机械科技有限公司 A kind of cold area's rock tunnel construction acceleration air flowing dust exhaust apparatus
CN109339853A (en) * 2018-11-20 2019-02-15 西南交通大学 A kind of novel tunnel face explosion dust-extraction unit
CN109339853B (en) * 2018-11-20 2023-09-29 西南交通大学 Novel tunnel face blasting dust removal device
CN110410075A (en) * 2019-07-31 2019-11-05 西安科技大学 A kind of full-mechanized roadway/constructing tunnel dust removal method and dust pelletizing system
CN110410075B (en) * 2019-07-31 2021-01-26 西安科技大学 Fully-mechanized excavation roadway/tunnel construction dust removal method and dust removal system
CN111550276A (en) * 2020-05-23 2020-08-18 中电建十一局工程有限公司 Ventilating and dedusting method for traffic tunnel group excavation construction in hydropower station field
CN114278360A (en) * 2021-12-23 2022-04-05 中交路桥建设有限公司 Movable type dust blocking and trapping oxygen supply device and method based on tunnel construction operation

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