CN102235175A - Smoke elimination and dust settlement construction method for long and large tunnel and dust settlement station used in construction method - Google Patents
Smoke elimination and dust settlement construction method for long and large tunnel and dust settlement station used in construction method Download PDFInfo
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- CN102235175A CN102235175A CN201110023032XA CN201110023032A CN102235175A CN 102235175 A CN102235175 A CN 102235175A CN 201110023032X A CN201110023032X A CN 201110023032XA CN 201110023032 A CN201110023032 A CN 201110023032A CN 102235175 A CN102235175 A CN 102235175A
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Abstract
The invention discloses a smoke elimination and dust settlement construction method for a long and large tunnel and a dust settlement station used in the construction method. The smoke elimination and dust settlement construction method comprises the following steps of: moving an excavation trolley away; starting the dust settlement station at the front end of the excavation trolley; blasting; ventilating; starting the dust settlement station in a hole formation section; inspecting smoke elimination and dust settlement effects in a hole; stopping the dust settlement station; and flushing a road surface in the hole of the tunnel. In the dust settlement station, spray pipes (7) are arranged on pipe supports (1); mist exhaust holes (6) are formed in the spray pipes (7); the spray pipes (7) are connected with high-pressure air pipes (2) and high-pressure water pipes (3); gate valves (4) are arranged on the high-pressure air pipes (2) and the high-pressure water pipe (3); and drain plugs (5) are arranged on the spray pipes (7). The method and the station have the obvious effects of improving dust settlement efficiency, improving a construction environment in the hole, saving construction cycle time, saving engineering construction cost and the like; and a smoke elimination and dust settlement system is easy to manufacture, is convenient to operate, has obvious integral advantages and solves the technical problems of smoke elimination and dust settlement of the long and large tunnel.
Description
Technical field
The present invention relates to a kind of job practices and employed depositing dust station of the tunnel smoke elimination depositing dust of growing up.
Background technology
In the constructing tunnel process, a large amount of pernicious gases and dust that Blasting Excavation, the transportation of dress quarrel, the supporting of spray concrete etc. produce, not only directly endanger constructor's physical and mental health, and influence efficiency, the restriction construction speed, also can cause damage to facility in the hole simultaneously, the smoke harm that therefore solves the tunnel just becomes the major issue that can not be ignored in the constructing tunnel.In time, efficiently, economic pernicious gas in the hole and dust are removed, not only embody the humane work idea of environmental protection, more can effectively increase work efficiency accelerating construction progress.
In traditional job practices, the basic measures of smoke elimination depositing dust are normally by the mechanical ventilation dilution and discharge job site smog and dust suspension, replenish fresh air.And,, increase financial cost because the growth of distance not only strengthens the ventilation difficulty for the construction in the tunnel of growing up, and more dust can discharged in the process in the hole outside, make dust fill the air whole tunnel, the effect of reduction smoke abatement and dust control.Yet there are no smoke elimination depositing dust job practices and depositing dust station in a kind of tunnel of growing up of simple and practical, efficient quick.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of tunnel smoke elimination depositing dust job practices and employed depositing dust station thereof of growing up is provided, and to improve the construction operation environment, the tunnel ventilation difficulty is big, the high deficiency of financial cost to overcome growing up that prior art exists.
Technical scheme of the present invention: it comprises following job step: move and back out digging stillage truck → unlatching excavation chassis front end depositing dust station → blow out → ventilate → open smoke elimination dust-laying effect in cavitation section depositing dust station → inspection hole → close road surface in depositing dust station → hole, flushing tunnel; The wash water interface is set in the hole, tunnel, the periodic flushing road surface, and automobile-washing groove cleaning excavation chassis is set.
2～3 depositing dust stations are set in the tunnel, form 2～3 grades of smoke elimination depositing dusts; From face nearest be the 1st grade of depositing dust station, and the like be the 2nd grade of depositing dust station, 3rd level depositing dust station; Chassis front end depositing dust station is promptly excavated at the 1st grade of depositing dust station, is installed in the excavation chassis by a side of face, with the distance of face be 30～35m; The 2nd grade of depositing dust station, 3rd level depositing dust station are cavitation section depositing dust station; Distance between each depositing dust station is 100～150m.
Drill and retain the certain pressure high-pressure blast to form water smoke behind the hole clearly, guarantee chassis yielding distance simultaneously.
The employed water under high pressure pressure in depositing dust station is controlled at 0.5～0.7Mpa, and high-pressure blast pressure is controlled at 0.5～0.9Mpa.
Employed depositing dust station comprises pipe support, and jet pipe is set on pipe support, and defogging hole is set on jet pipe; Jet pipe connects high-pressure air hose, high-pressure water pipe, on high-pressure air hose, high-pressure water pipe gate valve is set; On jet pipe, plug is set with high-pressure air hose, the corresponding other end of high-pressure water pipe.
On jet pipe top defogging hole is set, defogging hole is 2 rows, diameter is 2mm, be spaced apart 20cm.
Defogging hole is set to the vertical angle of 30 °～45 ° or 45 °～60 °.The defogging hole that is used for the 1st grade of depositing dust station is set to 30 °～45 ° vertical angle, and the defogging hole that is used for other grade depositing dust station is set to 45 °～60 °
Defogging hole is arranged on the front side of jet pipe, or is arranged on the forward and backward both sides of jet pipe.Be used for front side that the defogging hole at the 1st grade of depositing dust station is arranged on jet pipe promptly towards face one side, the defogging hole that is used for other grade depositing dust station is arranged on the both sides of jet pipe and forward and backward side (rear side for face one side) dorsad.
Jet pipe adopts coating steel pipe to make.
Described depositing dust hangs with lighting decoration lamp on the station.
By utilizing high-pressure blast used in the constructing tunnel process and water under high pressure, self-control depositing dust station, form supporting comprehensive depositing dust systems such as face system burn-off cigarette depositing dust (relying on the excavation chassis)-depositing dust station smoke elimination depositing dust-automobile-washing groove, road surface cleaning depositing dust, effectively reach the purpose of smoke elimination depositing dust.
The present invention adopts the smoke elimination dust falling system to change the fume exhausting type of mechanical ventilation such as pump drainage, pressure in the past, by analyzing the source of dust, pernicious gas, utilize key positions such as excavation chassis, passway that most dust, pernicious gas are in time subdued in operation path, the long-time scope of operation and the passages of polluting such as smog have been avoided, the harm constructor is healthy and delay the activity duration, embody humane construction theory, improved efficiency of construction.
Compared with prior art, the present invention has following effect:
⑴ effective strong, and effectively dust reduction rate reaches more than 90%, reduces ventilation time, and the tunnel of particularly growing up can make the flue dust that produces in the construction subdue rapidly in the hole.
⑵ meet the theory of environmental protection, green, humanity, effectively ensures the healthy of first-line staff of constructing.
⑶ less investment, the engineering cost of tunnel ventilation dedusting can be greatly saved in economical rationality.
⑷ play the effect that depositing dust is protected to plant equipment in the holes such as ventilation, air compressor machine, saves the expense of maintenance overhaul.
⑸ make simple, easy to use, can also play brightening effect attractive in appearance to environment in the hole by adding the laying and hanging ornamental fairy light.
Embodiments of the invention: be used for expensive wide high-speed railway rock mountain constructing tunnel.
Description of drawings
Fig. 1 is a depositing dust station structure schematic diagram of the present invention.
The specific embodiment
Embodiments of the invention:The tunnel smoke elimination depositing dust job practices of growing up of the present invention, its smoke elimination depositing dust operation may further comprise the steps: move and back out digging stillage truck → unlatching excavation chassis front end depositing dust station → blow out → ventilate → open smoke elimination dust-laying effect in cavitation section depositing dust station → inspection hole → close road surface in depositing dust station → hole, flushing tunnel, eight parts are formed, and a cycle operation total time is 1～1.5 hour.
The tunnel smoke elimination dust falling system of growing up is made up of ventilation fan, airduct, depositing dust station, automobile-washing groove, road surface cleaning etc.
⑴ depositing dust station
⑵ the setting of smoke elimination dust falling system
2～3 depositing dust stations of operated by rotary motion in the tunnel form 2～3 grades of smoke elimination depositing dusts.From face nearest be the 1st grade of depositing dust station, and the like be the 2nd grade of depositing dust station, the 3rd and the depositing dust station.Open at needs depositing dust section during use, generally opening 2～3 depositing dust stations after explosion can meet the demands.The distance of the 1st grade of depositing dust station and face is 30～35m, and the distance between the depositing dust station is 100～150m.The 1st grade of depositing dust station is installed in the side of excavation chassis by face, and is fixed on that 20cm drill diameter size in every interval be the defogging hole 6 of 2mm on jet pipe 7, amounts to 2 rows, and Kong Yi is arranged to 30 °～45 ° vertical angles with formation depositing dust section.The excavation chassis retreats, and making the distance of the 1st grade of depositing dust station and face is 30～35m; Blow out preceding the 1st grade of depositing dust station and open, note retaining the certain pressure high-pressure blast consciously to form water smoke behind the hole clearly drilling, guarantee that simultaneously chassis makes a concession distance, avoid the geomantic omen pipe to be smashed.Except that the 1st grade of depositing dust station, defogging hole 6 is respectively established in the both sides, front and back in jet pipe 7 tops at other depositing dust station, and the hole should be provided with at 45～60 ° vertical angle to form the depositing dust section.
⑶ ancillary facility
For effectively reducing airborne dust in transit, keep the cleaning on road surface moistening, can in the tunnel, pay attention to ancillary facility dedusting cooling.As guarantee to transport road surface smooth-going when filling (at the bottoming plate and should be strict with planeness); Keep the road surface moistening, reduce the airborne dust in the transportation and reduce temperature in the hole; One wash water interface, periodic flushing road surface are set about every 100m in the hole, tunnel; And, clean the excavation chassis at certain distance and automobile-washing groove is set in the passway, reduce the dust of walking arrangement.
⑷ decorate the brightening effect
By on the depositing dust station, carrying additionally lighting decoration lamp, can play brightening to hole one skilled in the art's vehicle pass-through and wake up and to show effect, change dull in the tunnel simultaneously relatively, increase some bright colors, appropriate change construction operation personnel's visual experience, the adjusting operating environment is beneficial to raises labour efficiency.
Claims (8)
1. tunnel smoke elimination depositing dust job practices of growing up, it is characterized in that: it comprises following job step: move and back out digging stillage truck → unlatching excavation chassis front end depositing dust station → blow out → ventilate → open smoke elimination dust-laying effect in cavitation section depositing dust station → inspection hole → close road surface in depositing dust station → hole, flushing tunnel.
2. the tunnel smoke elimination depositing dust job practices of growing up according to claim 1, it is characterized in that: the used water under high pressure pressure in depositing dust station is controlled at 0.5～0.7Mpa, and high-pressure blast pressure is controlled at 0.5～0.9Mpa.
3. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up as claimed in claim 1 is characterized in that: jet pipe (7) is set on pipe support (1), defogging hole (6) is set on jet pipe (7); Jet pipe (7) connects high-pressure air hose (2), high-pressure water pipe (3), on high-pressure air hose (2), high-pressure water pipe (3) gate valve (4) is set; Go up and high-pressure air hose (2), the corresponding other end of high-pressure water pipe (3) are provided with plug (5) at jet pipe (7).
4. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up according to claim 3 is characterized in that: on jet pipe (7) top defogging hole (6) is set, defogging hole (6) is 2 rows, diameter is 2mm, be spaced apart 20cm.
5. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up according to claim 3 is characterized in that: defogging hole (6) is set to the vertical angle of 30 °～45 ° or 45 °～60 °.
6. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up according to claim 3, it is characterized in that: defogging hole (6) is arranged on the front side of jet pipe (7), or is arranged on the forward and backward both sides of jet pipe (7).
7. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up according to claim 3 is characterized in that: jet pipe (7) adopts coating steel pipe to make.
8. employed depositing dust station in the tunnel smoke elimination depositing dust job practices of growing up according to claim 3, it is characterized in that: described depositing dust hangs with lighting decoration lamp on the station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110023032XA CN102235175A (en) | 2011-01-21 | 2011-01-21 | Smoke elimination and dust settlement construction method for long and large tunnel and dust settlement station used in construction method |
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| CN201110023032XA CN102235175A (en) | 2011-01-21 | 2011-01-21 | Smoke elimination and dust settlement construction method for long and large tunnel and dust settlement station used in construction method |
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Cited By (8)
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| CN103147787A (en) * | 2013-04-07 | 2013-06-12 | 山东八一煤电化有限公司 | Wind-water linked spray and aspirating device |
| CN105545348A (en) * | 2016-02-25 | 2016-05-04 | 中铁十八局集团有限公司 | Reducing pipe air pressurization alkaline water curtain toxin removing and dust falling device used after tunnel explosion |
| CN105626135A (en) * | 2016-03-23 | 2016-06-01 | 西南交通大学 | Tunnel dust removal device |
| CN106382130A (en) * | 2016-11-30 | 2017-02-08 | 许德芳 | Roadway blade-free pneumatic dust removal device for mine |
| CN106437822A (en) * | 2016-11-30 | 2017-02-22 | 许德芳 | Mining roadway pneumatic dust-removing device |
| CN106759060A (en) * | 2017-01-17 | 2017-05-31 | 刘宝雨 | control mist air curtain system |
| CN107130995A (en) * | 2017-07-17 | 2017-09-05 | 中国水利水电第五工程局有限公司 | One kind blows out rear dust and blasting fume device for removing harmful substances |
| CN109973138A (en) * | 2019-02-14 | 2019-07-05 | 中交二公局第三工程有限公司 | A kind of depositing dust formula lighting device for subway work |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147787A (en) * | 2013-04-07 | 2013-06-12 | 山东八一煤电化有限公司 | Wind-water linked spray and aspirating device |
| CN105545348A (en) * | 2016-02-25 | 2016-05-04 | 中铁十八局集团有限公司 | Reducing pipe air pressurization alkaline water curtain toxin removing and dust falling device used after tunnel explosion |
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| CN106382130A (en) * | 2016-11-30 | 2017-02-08 | 许德芳 | Roadway blade-free pneumatic dust removal device for mine |
| CN106437822A (en) * | 2016-11-30 | 2017-02-22 | 许德芳 | Mining roadway pneumatic dust-removing device |
| CN106382130B (en) * | 2016-11-30 | 2018-09-21 | 许德芳 | A kind of mining tunnel Bladeless pneumatic dedusting device |
| CN106759060A (en) * | 2017-01-17 | 2017-05-31 | 刘宝雨 | control mist air curtain system |
| CN107130995A (en) * | 2017-07-17 | 2017-09-05 | 中国水利水电第五工程局有限公司 | One kind blows out rear dust and blasting fume device for removing harmful substances |
| CN107130995B (en) * | 2017-07-17 | 2023-10-27 | 中国水利水电第五工程局有限公司 | Dust and gun smoke harmful substance clearing device after blasting |
| CN109973138A (en) * | 2019-02-14 | 2019-07-05 | 中交二公局第三工程有限公司 | A kind of depositing dust formula lighting device for subway work |
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Application publication date: 20111109 |