CN111335937A - Spray dust removal system and method based on complex cavern group construction - Google Patents
Spray dust removal system and method based on complex cavern group construction Download PDFInfo
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- CN111335937A CN111335937A CN202010247058.1A CN202010247058A CN111335937A CN 111335937 A CN111335937 A CN 111335937A CN 202010247058 A CN202010247058 A CN 202010247058A CN 111335937 A CN111335937 A CN 111335937A
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- dust removal
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- water curtain
- spray dust
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- 239000000428 dust Substances 0.000 title claims abstract description 75
- 239000007921 spray Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000005641 tunneling Effects 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005507 spraying Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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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)
- Environmental & Geological Engineering (AREA)
- Prevention Of Fouling (AREA)
Abstract
A spray dust removal system and method based on complex cavern group construction comprises ventilation equipment, spray dust removal equipment and a water curtain, wherein the ventilation equipment is installed at the cave mouths of an a-type inclined shaft channel and a b-type inclined shaft channel, the pipelines of the ventilation equipment are extended to the tunnel face along with the tunneling process, the water curtain is installed in a tunnel, and the spray dust removal equipment is arranged at the tunnel face. The method comprises the following steps of S1: mounting ventilation equipment at the openings of the No. a inclined shaft channel and the No. b inclined shaft channel to ensure that a gap is formed between the pipe orifice of the ventilation equipment and the tunnel face; installing a water curtain in a tunnel in the tunneling process, enabling a pipeline of ventilation equipment to penetrate through the water curtain, arranging spray dust removal equipment at the tunnel face, and enabling a discharge end of the spray dust removal equipment to face the water curtain; s2: the ventilation device and the spray dedusting device are activated so that the dust particles discharged by the spray dedusting device form a barrier via the water curtain. Has the advantages of simple and reliable structure, capability of effectively reducing the dust concentration in the hole and improving the dust removal effect.
Description
Technical Field
The invention mainly relates to a dust settling technology for complex cavern group construction, in particular to a spray dust removal system and method based on complex cavern group construction.
Background
The underground building area of the great wall station of the octada mountain is 36143 square meters, and the underground station is the underground excavation station with the largest scale in the world at present. The transition sections at two ends of the station are single-hole tunnels, the maximum excavation span is 32.7 meters, the excavation area is 494.4 square meters, and the tunnel is a subsurface excavation railway tunnel with the largest span at home at present. 78 various caverns are designed in the station, the section type is up to 88, the cross nodes are dense, the intersecting surfaces are multiple, 63 intersecting surfaces of different caverns in the station are total, and meanwhile, the station and transition sections at two ends are constructed by No. 2 inclined shaft tissues, and 8 branch passages are arranged. No. 1, No. 8 divide passageway construction station both ends positive cave, No. 2, No. 3, No. 7 divide the passageway construction to stride across the changeover portion greatly, No. 4, No. 5, No. 6 divide passageway construction station, and 13 working faces of total work of construction peak period operate simultaneously, and the hole crowd effect is obvious, and the commodity circulation is organized complicacy, and construction organization difficulty, the dust fall requires highly, the degree of difficulty is big.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a spraying dust removal system and a spraying dust removal method based on complex grotto group construction, which have simple and reliable structure, can effectively reduce the dust concentration in holes and improve the dust removal effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
a spray dust removal system based on construction of a complex cavern group is disclosed, wherein the complex cavern group comprises tunnel sections at two ends and a triple arch section in the middle, a variable span section is connected between the triple arch section and the tunnel section at the corresponding end, chambers at one side of the triple arch section are communicated with a No. 1 branch channel, a No. 2 branch channel, a No. 3 branch channel, a No. 4 branch channel and a No. 5 branch channel, the tunnel section at one end is communicated with a No. 6 branch channel, the tunnel section at the other end is communicated with a No. 7 branch channel, the No. 4 branch channel and the No. 7 branch channel are both communicated with the No. 5 branch channel, the complex cavern group further comprises an a inclined shaft channel and a b inclined shaft channel, the a inclined shaft channel is communicated with the No. 1 branch channel, the No. 2 branch channel, the No. 3 branch channel, the No. 6 branch channel and the tunnel section at the end, and the b inclined shaft channel is communicated with the No. 5 branch; the spraying dust removal system comprises ventilation equipment, spraying dust removal equipment and a water curtain, wherein the ventilation equipment is arranged at a hole part of an a-type inclined shaft channel and a hole part of a b-type inclined shaft channel, the pipeline of the ventilation equipment is extended to the hole surface along with the tunneling process, the distance between the pipe orifice of the ventilation equipment and the hole surface is formed, the water curtain is arranged in the hole in the tunneling process and is spaced from the pipe orifice of the ventilation equipment, the pipeline of the ventilation equipment penetrates through the water curtain, the spraying dust removal equipment is arranged at the hole surface and is spaced from the hole surface, and the discharge end of the spraying dust removal equipment faces towards the water curtain.
A spray dust removal method based on complex cavern group construction is carried out by using the spray dust removal system, and comprises the following steps:
s1: installing ventilation equipment at the openings of the No. a inclined shaft channel and the No. b inclined shaft channel, so that the pipeline of the ventilation equipment is extended to the position of the tunnel face along with the tunneling process, and the distance between the pipe opening of the ventilation equipment and the tunnel face is ensured; installing a water curtain in a tunnel in the tunneling process and ensuring that the water curtain is spaced from a pipe opening of ventilation equipment, enabling a pipeline of the ventilation equipment to penetrate through the water curtain, arranging spray dust removal equipment at a tunnel face and forming a distance with the tunnel face, and enabling a discharge end of the spray dust removal equipment to face the water curtain;
s2: the ventilation device and the spray dedusting device are activated so that the dust particles discharged by the spray dedusting device form a barrier via the water curtain.
As a further improvement of the above technical solution:
in step S1, the water curtain is set up in multiple passes to form a multi-stage obstructing dust removal barrier.
Compared with the prior art, the invention has the advantages that:
according to the spray dust removal system based on complex cavern group construction, positive and negative pressure areas are formed in the cavern through the ventilation equipment, positive pressure is formed near the cavern, negative pressure is formed near the tunnel face, the spray dust removal equipment performs spray dust removal in the negative pressure area, dirty dust is discharged to the water curtain from the discharge end by wind power generated by the ventilation equipment, and the water curtain barrier is formed by the water curtain to achieve the purpose of blocking dust removal. The spray dust removal method based on the complex cavern group construction is carried out by using the spray dust removal system based on the complex cavern group construction, and has the corresponding technical effects of the spray dust removal system based on the complex cavern group construction.
Drawings
FIG. 1 is a schematic diagram of a complex group of caverns according to the present invention.
Fig. 2 is a schematic structural diagram of the spray dust removal system of the present invention.
FIG. 3 is a flow chart of the spray dedusting method of the present invention.
The reference numerals in the figures denote:
1. a tunnel segment; 2. a triple arch segment; 3. changing the span; 4. 1, dividing channels; 5. channel division No. 2; 6. channel division No. 3; 7. channel division No. 4; 8. channel division No. 5; 9. channel division No. 6; 10. channel division No. 7; 11. a number of inclined shaft channels; 12. a No. b inclined shaft channel; 13. a ventilation device; 14. a spray dust removal device; 15. a curtain of water.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Fig. 1 to 3 show an embodiment of the spray dedusting system based on the construction of a complex cavern group, the complex cavern group comprises tunnel sections 1 at two ends and a middle triple arch section 2, a variable span section 3 is connected between the triple arch section 2 and the tunnel section 1 at the corresponding end, chambers at one side of the triple arch section 2 are communicated with a No. 1 branch channel 4, a No. 2 branch channel 5, a No. 3 branch channel 6, a No. 4 branch channel 7 and a No. 5 branch channel 8, the tunnel section 1 at one end is communicated with a No. 6 branch channel 9, the tunnel section 1 at the other end is communicated with a No. 7 branch channel 10, the No. 4 branch channel 7 and the No. 7 branch channel 10 are both communicated with a No. 5 branch channel 8, the complex cavern group further comprises an a inclined shaft channel 11 and a inclined shaft channel 12, the a inclined shaft channel 11 is communicated with the No. 1 branch channel 4, the No. 2 branch channel 5, the No. 3 branch channel 6, the No. 6 branch channel 9 and the tunnel section 1 at the end, the No. b inclined shaft channel 12 is communicated with the No. 5 branch channel 8; the spray dust removal system comprises ventilation equipment 13, spray dust removal equipment 14 and a water curtain 15, wherein the ventilation equipment 13 is installed at the hole mouths of a No. inclined shaft channel 11 and a No. b inclined shaft channel 12, the pipeline of the ventilation equipment 13 extends to the position of a tunnel face along with a tunneling process, the hole mouth of the ventilation equipment 13 is spaced from the tunnel face, the water curtain 15 is installed in the hole in the tunneling process and is spaced from the hole mouth of the ventilation equipment 13, the pipeline of the ventilation equipment 13 penetrates through the water curtain 15, the spray dust removal equipment 14 is arranged at the position of the tunnel face and is spaced from the tunnel face, and the discharge end of the spray dust removal equipment 14 faces the water curtain 15. This spray dust removal system makes the indoor positive negative pressure district that forms of hole through ventilation equipment 13, and it is the malleation to be close to the entrance to a cave, and it is the negative pressure to be close to the face, and spray dust removal equipment 14 carries out spray dust removal in the negative pressure district, and the wind-force that produces by ventilation equipment 13 makes dirty dirt discharge to water curtain 15 by the discharge end, forms the water curtain barrier by water curtain 15 and reaches the separation dust removal purpose, and its simple structure is reliable, can effectively reduce the dust concentration in the hole, has improved dust removal effect greatly.
Fig. 1 to 3 show an embodiment of the spray dust removal method based on complex cavern group construction, which is performed by the spray dust removal system, and comprises the following steps:
s1: installing a ventilation device 13 at the openings of the No. a inclined shaft channel 11 and the No. b inclined shaft channel 12, so that the pipeline of the ventilation device 13 is extended to the position of the tunnel face along with the tunneling process, and the distance between the opening of the ventilation device 13 and the tunnel face is ensured; installing a water curtain 15 in a hole in the tunneling process and ensuring that the water curtain 15 is spaced from the pipe orifice of the ventilation equipment 13, enabling the pipeline of the ventilation equipment 13 to penetrate through the water curtain 15, arranging the spray dust removal equipment 14 at the tunnel face and forming a distance with the tunnel face, and enabling the discharge end of the spray dust removal equipment 14 to face the water curtain 15;
s2: the ventilation device 13 and the spray dedusting device 14 are activated such that the dust particles discharged by the spray dedusting device 14 form a barrier via the water curtain 15.
The method forms a positive and negative pressure area in the cavern through the ventilation equipment 13, the area close to the cavern is positive pressure, the area close to the tunnel is negative pressure, the spray dust removal equipment 14 carries out spray dust removal in the negative pressure area, the wind power generated by the ventilation equipment 13 enables dirty dust to be discharged to the water curtain 15 from the discharge end, the water curtain 15 forms a water curtain barrier to achieve the purpose of blocking dust removal, the structure is simple and reliable, the dust concentration in the cavern can be effectively reduced, and the dust removal effect is greatly improved.
In the present embodiment, in step S1, the water curtain 15 is set in plural passes to form a multi-stage obstructing and dust-removing barrier. And a plurality of water curtains 15 are arranged to form a multi-stage blocking dust removal barrier, so that the dust removal effect is further improved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (3)
1. The utility model provides a spray dust removal system based on construction of complicated cavern crowd which characterized in that: the complex cavern group comprises tunnel sections (1) at two ends and a middle triple arch section (2), a variable span section (3) is connected between the triple arch section (2) and the tunnel section (1) at the corresponding end, one side cavern of the triple arch section (2) is communicated with a channel (4) for 1 number, a channel (5) for 2 number, a channel (6) for 3 number, a channel (7) for 4 number and a channel (8) for 5 number, the tunnel section (1) at one end is communicated with a channel (9) for 6 number, the tunnel section (1) at the other end is communicated with a channel (10) for 7 number, the channel (7) for 4 number and the channel (10) for 7 number are communicated with a channel (8) for 5 number, the complex cavern group further comprises an inclined shaft channel (11) for a number and an inclined shaft channel (12) for b number, and the inclined shaft channel (11) for a number and the channel (4) for 1 number, the channel (5) for 2 number, The No. 3 branch channel (6) and the No. 6 branch channel (9) are communicated with the tunnel section (1) at the end, and the No. b inclined shaft channel (12) is communicated with the No. 5 branch channel (8); the spray dust removal system comprises ventilation equipment (13), spray dust removal equipment (14) and a water curtain (15), the ventilation equipment (13) is installed at a hole of an inclined shaft channel (11) and a hole of an inclined shaft channel (12) of a number b, the pipeline of the ventilation equipment (13) is extended to the hole along with the tunneling process, the pipe orifice of the ventilation equipment (13) and the hole form a distance, the water curtain (15) is installed in the hole of the tunneling process and forms a distance with the pipe orifice of the ventilation equipment (13), the pipeline of the ventilation equipment (13) penetrates through the water curtain (15), the spray dust removal equipment (14) is arranged at the hole and forms a distance with the hole, and the discharge end of the spray dust removal equipment (14) faces towards the water curtain (15).
2. A spray dust removal method based on complex cavern group construction is characterized in that the spray dust removal method is carried out by the spray dust removal system of claim 1, and comprises the following steps:
s1: installing a ventilation device (13) at the openings of the No. a inclined shaft channel (11) and the No. b inclined shaft channel (12), so that the pipeline of the ventilation device (13) is extended to the position of the tunnel face along with the tunneling process, and the distance between the opening of the ventilation device (13) and the tunnel face is ensured; installing a water curtain (15) in a hole in the tunneling process and ensuring that the water curtain (15) is spaced from the pipe orifice of the ventilation equipment (13), enabling the pipeline of the ventilation equipment (13) to penetrate through the water curtain (15), arranging the spray dust removal equipment (14) at the tunnel face and forming a distance with the tunnel face, and enabling the discharge end of the spray dust removal equipment (14) to face the water curtain (15);
s2: the ventilation device (13) and the spray dust removal device (14) are activated such that the dust particles discharged by the spray dust removal device (14) form a barrier via the water curtain (15).
3. The spray dust removal method based on the construction of the complex cavern group as claimed in claim 2, wherein: in step S1, the water curtain (15) is set in multiple passes to form a multi-stage obstructing and dust-removing barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010247058.1A CN111335937A (en) | 2020-03-31 | 2020-03-31 | Spray dust removal system and method based on complex cavern group construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010247058.1A CN111335937A (en) | 2020-03-31 | 2020-03-31 | Spray dust removal system and method based on complex cavern group construction |
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| Publication Number | Publication Date |
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| CN111335937A true CN111335937A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010247058.1A Pending CN111335937A (en) | 2020-03-31 | 2020-03-31 | Spray dust removal system and method based on complex cavern group construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934805A (en) * | 2022-06-02 | 2022-08-23 | 中铁十五局集团有限公司 | Automatic dust falling method and system for tunnel section underground excavation construction |
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|---|---|---|---|---|
| SU620623A1 (en) * | 1974-05-13 | 1978-08-25 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт (Книуи) | Method of airing mine workings |
| SU705124A1 (en) * | 1977-03-22 | 1979-12-25 | Институт горного дела | Mobile apparatus for dust and gas suppression in multiple blasting |
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| CN107514275A (en) * | 2017-10-19 | 2017-12-26 | 淮南矿业(集团)有限责任公司 | Tunnelling dust prevention system |
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2020
- 2020-03-31 CN CN202010247058.1A patent/CN111335937A/en active Pending
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| SU620623A1 (en) * | 1974-05-13 | 1978-08-25 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт (Книуи) | Method of airing mine workings |
| SU705124A1 (en) * | 1977-03-22 | 1979-12-25 | Институт горного дела | Mobile apparatus for dust and gas suppression in multiple blasting |
| CN105604601A (en) * | 2015-12-28 | 2016-05-25 | 中煤第五建设有限公司第一工程处 | Wind and water combined spraying and dust removing method of tunneling work face in roadway |
| CN107514275A (en) * | 2017-10-19 | 2017-12-26 | 淮南矿业(集团)有限责任公司 | Tunnelling dust prevention system |
| CN110107338A (en) * | 2019-03-26 | 2019-08-09 | 淮北矿业股份有限公司 | A kind of dust-proof cascade of full-mechanized roadway pneumatic type |
Non-Patent Citations (1)
| Title |
|---|
| 陈彬: "八达岭长城站超大断面过渡段暗挖施工新技术", 《隧道建设》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934805A (en) * | 2022-06-02 | 2022-08-23 | 中铁十五局集团有限公司 | Automatic dust falling method and system for tunnel section underground excavation construction |
| CN114934805B (en) * | 2022-06-02 | 2023-03-10 | 中铁十五局集团有限公司 | Automatic dust falling method and system for tunnel section underground excavation construction |
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Application publication date: 20200626 |