CN113123802B - Tunnel inverted arch virtual slag mechanized cleaning method - Google Patents
Tunnel inverted arch virtual slag mechanized cleaning method Download PDFInfo
- Publication number
- CN113123802B CN113123802B CN202110463122.4A CN202110463122A CN113123802B CN 113123802 B CN113123802 B CN 113123802B CN 202110463122 A CN202110463122 A CN 202110463122A CN 113123802 B CN113123802 B CN 113123802B
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- CN
- China
- Prior art keywords
- virtual slag
- virtual
- inverted arch
- slag
- collecting bag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 21
- 238000007790 scraping Methods 0.000 claims abstract description 34
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 238000003672 processing method Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention provides a processing method of inverted arch virtual slag; firstly, excavating an inverted arch according to design requirements; then scraping off the virtual slag in the area near the central line of the lowest part of the inverted arch by using a slag scraping plate, and providing a working surface for a virtual slag collecting bag; paving a virtual slag collecting bag at the position of scraping the virtual slag; blowing off the inverted arch virtual slag to a virtual slag collecting bag by using a high-pressure air nozzle; recycling the virtual slag collecting bag and cleaning the virtual slag; finally, the residual virtual slag at the bottom of the virtual slag collecting bag is blown down to the next working surface by high-pressure air; with this circulation, the clearance of the virtual sediment of invert working face is accomplished. The invention has the characteristics of safety, reliability, simple and convenient construction, low cost, high construction efficiency of multiple working surfaces and wide application, and is suitable for inverted arch construction of various mountain tunnels.
Description
Technical Field
The invention relates to a method for treating inverted arch virtual slag, in particular to a method for mechanically cleaning tunnel inverted arch virtual slag.
Background
Along with the continuous improvement of railway operation speed, the requirements on the tunnel construction quality are higher and higher, and the combination of the poured concrete and the tunnel is directly affected by the virtual slag generated in the inverted arch construction. After the inverted arch is excavated, the virtual slag is cleaned, and then concrete can be poured.
At present, the tunnel virtual slag is cleaned manually, and because the working face excavated by the tunnel is uneven, the labor intensity of manual operation is high, the cleaning of the virtual slag with smaller particles is difficult, the cleaning time is long, and the cost is high.
Disclosure of Invention
Aiming at the problems that the tunnel inverted arch virtual slag is difficult to clean manually and causes high labor intensity and high input cost in the prior art, the invention provides a mechanized cleaning method, thereby achieving the purposes of improving the cleaning efficiency and ensuring the scraping quality of the virtual slag.
The scheme provided by the invention is as follows:
a tunnel inverted arch virtual slag mechanized cleaning method comprises the following steps:
A. excavating an inverted arch according to design requirements;
B. the method comprises the steps that a muck scraper is arranged at the connecting end of a bucket of the excavator, virtual slag on an inverted arch is scraped by the muck scraper, and the scraped positions scrape to two side areas of a central line from the central line at the lowest position of the inverted arch to form virtual slag piles, and meanwhile a first working surface is formed;
C. gradually backing the excavator, and continuously repeating the scraping operation in the step (B) to form a second working surface; repeating the retreating and scraping operations to form a working surface No. … … n of a working surface No. three;
D. symmetrically paving two virtual slag collecting bags on the first working surface by taking the central line of the lowest part of the inverted arch as a reference, and enabling the opening ends of the virtual slag collecting bags to be aligned with a virtual slag pile;
E. blowing the virtual slag into a virtual slag collecting bag by using a high-pressure air nozzle, and then recycling the virtual slag collecting bag; simultaneously blowing the virtual slag remained at the bottom of the virtual slag collecting bag to a virtual slag pile of the second working face by using a high-pressure air nozzle so as to finish cleaning the first working face;
F. and (3) paving the virtual slag bag recovered in the step (E) on a second working surface, continuously repeating the operations of the steps (D) and (E) to finish cleaning the second working surface, and then finishing cleaning virtual slag on all working surfaces of the inverted arch on a third working surface and a fourth working surface … … n.
Further, when the high-pressure air spray head is used for blowing the virtual slag into the virtual slag collecting bag, the mist shower water spray head is started at the same time so as to prevent dust from flying.
Further, the virtual slag collecting bag is made of a nylon cloth bag with a steel skeleton and comprises a semi-closed section, a fully-closed section and a conical section which are communicated in sequence, wherein the opening end of the virtual slag collecting bag is arranged on the semi-closed section, and a tying opening is formed in the conical section.
Further, the steel skeleton is made of seamless steel pipes with the diameters of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5m; the length of the fully-closed section is 1m, and the width of the opening is 0.6m; the taper length was 0.5m.
Further, a steel wire rope of a winch on the hydraulic trestle is inserted into a hanging ring of the virtual slag collecting bag, and is hung from one end and slowly hung, so that virtual slag automatically flows into a fully closed section of the virtual slag collecting bag under the action of gravity until the virtual slag completely falls into a conical section; and then a winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter the next working surface to continuously collect virtual slag.
Further, the muck scraper comprises a steel plate and a resin scraper head; one end of the steel plate is fixed at the connecting end of the excavator bucket, the other end of the steel plate is fixed with the resin scraping head, and the working end of the resin scraping head is of an arc-shaped structure which is identical to the tunnel inverted arch design structure.
Further, the resin scraping head is formed by assembling a plurality of detachable resin pieces.
The beneficial effects achieved by adopting the technical scheme are as follows:
1. the virtual slag scraper is arranged on the hydraulic excavator, so that virtual slag can be mechanically scraped, the full working surface of the inverted arch can be covered along with the movement of the excavator, the tunnel virtual slag can be cleaned in a long distance, and the construction efficiency is high; the resin scraping head has certain elasticity and can be in close contact with the tunnel, so that the scum scraping quality is ensured.
(2) According to the invention, the virtual slag is collected by adopting the virtual slag collecting bag, and the virtual slag can be blown into the collecting bag by utilizing the high-pressure air gun for centralized treatment, so that the concrete pouring working face can be provided rapidly.
Detailed Description
The following description is made of the principles and features of the present invention, examples of which are provided for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
The embodiment provides a mechanical cleaning method for virtual slag of a tunnel inverted arch, and labor intensity of operators is reduced by using the mechanical cleaning method.
The method comprises the following specific steps:
step A, excavating an inverted arch according to design requirements;
and B, installing a residue soil scraper at the joint end of a bucket of the excavator, scraping the virtual residue on the inverted arch by using the residue soil scraper, and scraping the scraping positions from the central line at the lowest position of the inverted arch to the two side areas of the central line to form a virtual residue pile, and forming a first working surface.
In the embodiment, the excavator is a hydraulic crawler excavator with the weight of 6-12 tons, a bucket at the front end of an excavating arm of the hydraulic crawler excavator is removed, and a residue soil scraper matched with the bucket is installed; the construction range of the hydraulic crawler excavator is within the range of 13-16 meters around the excavator, and each tunnel adopts two hydraulic crawler excavators to synchronously perform the slag removal operation.
Step C, after the first working surface is excavated and molded, the excavator gradually retreats, and the scraping operation in the step B is continuously repeated to form a second working surface; repeating the retreating and scraping; and repeating the retreating and scraping to form a third working surface and a fourth working surface … … n working surface.
In the embodiment, in order to ensure the cooperative execution of cleaning work, the length of a working surface (a first working surface and a second working surface … … n working surface) formed by scraping each time by the muck scraper is 2-3m, and the total scraping length after one working cycle is completed is 12m; it can be understood that when the length of each working surface formed is 2m, it is one cycle when doctoring to n=6; when the length of each working surface formed is 3m, one cycle is when doctoring to n=4.
And D, after one cycle is completed, symmetrically paving two virtual slag collecting bags on the first working surface by taking the central line of the lowest part of the inverted arch as a reference, and enabling the opening ends of the virtual slag collecting bags to be aligned with the virtual slag piles.
E, blowing the virtual slag on the first working surface into a virtual slag collecting bag by using a high-pressure air nozzle, and then recycling the virtual slag collecting bag; and simultaneously, the high-pressure air spray nozzle is used for blowing the virtual slag remained at the bottom of the virtual slag collecting bag to the virtual slag pile of the second working face so as to clean the first working face.
It should be noted that the high-pressure air nozzle is utilized to start to clean the virtual slag, the blowing direction blows and cleans the central line of the first working surface from the edge of the first working surface, and the inverted arch virtual slag is blown into the virtual slag collecting bag.
F, paving the virtual slag bag recovered in the step E on a second working surface, continuously repeating the operations of the steps D and E to finish cleaning the second working surface, and then finishing cleaning virtual slag on all working surfaces of the inverted arch on a third working surface and a fourth working surface … … n.
The method mainly includes the steps that a virtual slag collecting bag is moved to a second working face to be paved after the first working face is collected, and the movement is completed in an auxiliary mode through a winch on a hydraulic trestle; the steel wire rope of the winch on the hydraulic trestle is inserted into the hanging ring of the virtual slag collecting bag, the virtual slag is slowly hung from one end, at the moment, the virtual slag automatically flows into the bottom of the virtual slag collecting bag under the action of gravity, and then the winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter the second working face to continuously collect the virtual slag.
And by analogy, the virtual slag collecting bags are moved under the assistance of a winch on the hydraulic trestle from the second working surface to the third working surface, from the third working surface to the fourth working surface and from the fourth working surface to the … … n working surface.
In this embodiment, in order to avoid dust flying during the process of cleaning the virtual slag, the mode of opening the mist shower nozzle is preferably selected to reduce dust when the high-pressure air nozzle performs the virtual slag.
Optionally, the virtual slag collecting bag is made of nylon cloth bags with steel frameworks and comprises a semi-closed section, a fully-closed section and a conical section which are communicated in sequence, wherein the opening end of the virtual slag collecting bag is arranged on the semi-closed section, and a tying opening is formed in the conical section.
Specifically, the steel skeleton is made of a seamless steel pipe with the diameter of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5m; the length of the fully-closed section is 1m, and the width of the opening is 0.6m; the taper length was 0.5m.
The virtual slag enters the semi-closed section and the fully-closed section from the opening end in sequence under the blowing and spraying action of the high-pressure air spray head, and the virtual slag falls into the conical section completely in the moving process of the virtual slag collecting bag lifted by the winch; when the virtual slag collecting bag is full, the tying at the conical section can be opened to discharge the virtual slag.
In this embodiment, the muck scraper comprises a steel plate and a resin scraper head; one end of the steel plate is fixed at the connecting end of the excavator bucket, the other end of the steel plate is fixed with the resin scraping head, the working end of the resin scraping head is of an arc-shaped structure, and the arc-shaped structure is identical to the tunnel inverted arch design structure.
The scraping efficiency is ensured by arranging the resin scraping heads with the same design structure as the tunnel inverted arch, and meanwhile, the forming quality of each working face is ensured; and the solidification and combination of the post-pouring concrete are ensured.
Optionally, the resin scraping head is formed by assembling a plurality of detachable resin pieces.
In the embodiment, the width of the resin piece is 20-25cm, the length is 10-15cm, and a group of resin scraping heads are assembled by 5-7 resin pieces.
The virtual slag scraper is arranged on the hydraulic excavator, so that virtual slag can be mechanically scraped, the full working surface of the inverted arch can be covered along with the movement of the excavator, the tunnel virtual slag can be cleaned in a long distance, and the construction efficiency is high; the resin scraping head has certain elasticity and can be in close contact with the tunnel, so that the scum scraping quality is ensured; utilize the high-pressure air gun can blow virtual sediment to collecting bag in carry out centralized processing, can provide the concrete placement working face fast, compare in traditional mode that adopts a large amount of manual clearance, this scheme can greatly improve machining efficiency, reduce construction cost under the condition that reduces artifical input.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The tunnel inverted arch virtual slag mechanized cleaning method is characterized by comprising the following steps of:
A. excavating an inverted arch according to design requirements;
B. the method comprises the steps that a muck scraper is arranged at the connecting end of a bucket of the excavator, virtual slag on an inverted arch is scraped by the muck scraper, and the scraped positions scrape to two side areas of a central line from the central line at the lowest position of the inverted arch to form virtual slag piles, and meanwhile a first working surface is formed;
C. gradually backing the excavator, and continuously repeating the scraping operation in the step (B) to form a second working surface; repeating the retreating and scraping operations to form a working surface No. … … n of a working surface No. three;
D. symmetrically paving two virtual slag collecting bags on the first working surface by taking the central line of the lowest part of the inverted arch as a reference, and enabling the opening ends of the virtual slag collecting bags to be aligned with a virtual slag pile;
E. blowing the virtual slag into a virtual slag collecting bag by using a high-pressure air nozzle, and then recycling the virtual slag collecting bag; simultaneously blowing the virtual slag remained at the bottom of the virtual slag collecting bag to a virtual slag pile of the second working face by using a high-pressure air nozzle so as to finish cleaning the first working face;
F. and (3) paving the virtual slag collecting bag recovered in the step (E) on the second working surface, continuously repeating the operations of the steps (D) and (E) to finish cleaning the second working surface, and then finishing cleaning virtual slag on all working surfaces of the inverted arch on the third working surface and the fourth working surface … … n.
2. The mechanical cleaning method for the virtual slag in the inverted arch of the tunnel according to claim 1, wherein the high-pressure air spray nozzle is used for blowing the virtual slag into the virtual slag collecting bag, and the mist shower nozzle is started at the same time so as to prevent dust from flying.
3. The mechanical cleaning method for the virtual slag of the tunnel inverted arch according to claim 1, wherein the virtual slag collecting bag is made of a nylon cloth bag with a steel skeleton and comprises a semi-closed section, a fully-closed section and a conical section which are communicated in sequence, wherein the opening end of the virtual slag collecting bag is arranged on the semi-closed section, and a tying opening is arranged at the conical section.
4. The mechanical cleaning method for the virtual slag of the tunnel inverted arch according to claim 3, wherein the steel skeleton is made of a seamless steel pipe with the diameter of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5m; the length of the fully-closed section is 1m, and the width of the opening is 0.6m; the taper length was 0.5m.
5. The mechanical cleaning method for the virtual slag in the tunnel inverted arch according to claim 3, wherein a steel wire rope of a winch on a hydraulic trestle is inserted into a hanging ring of the virtual slag collecting bag and slowly hung from one end, and the virtual slag automatically flows into a fully closed section of the virtual slag collecting bag under the action of gravity until the virtual slag completely falls into a conical section; and then a winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter the next working surface to continuously collect virtual slag.
6. The method for mechanically cleaning virtual slag in a tunnel inverted arch according to claim 1, wherein the slag scraping plate comprises a steel plate and a resin scraping head; one end of the steel plate is fixed at the connecting end of the excavator bucket, the other end of the steel plate is fixed with the resin scraping head, and the working end of the resin scraping head is of an arc-shaped structure which is identical to the tunnel inverted arch design structure.
7. The method for mechanically cleaning virtual slag in an inverted arch of a tunnel according to claim 6, wherein the resin scraping head is formed by assembling a plurality of detachable resin pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110463122.4A CN113123802B (en) | 2021-04-22 | 2021-04-22 | Tunnel inverted arch virtual slag mechanized cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110463122.4A CN113123802B (en) | 2021-04-22 | 2021-04-22 | Tunnel inverted arch virtual slag mechanized cleaning method |
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| Publication Number | Publication Date |
|---|---|
| CN113123802A CN113123802A (en) | 2021-07-16 |
| CN113123802B true CN113123802B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110463122.4A Active CN113123802B (en) | 2021-04-22 | 2021-04-22 | Tunnel inverted arch virtual slag mechanized cleaning method |
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| Country | Link |
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| CN (1) | CN113123802B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010036272A (en) * | 1999-10-07 | 2001-05-07 | 고영래 | Floating matter remove treatment apparatus |
| CN204402511U (en) * | 2014-12-31 | 2015-06-17 | 中国建筑第五工程局有限公司 | Inverted arch trestle |
| CN105863665A (en) * | 2016-04-07 | 2016-08-17 | 石河子大学 | Disposing method for dross of stone tunnel invert |
| CN111691902A (en) * | 2020-06-04 | 2020-09-22 | 中交一公局集团有限公司 | Tunnel inverted arch construction process |
| KR102167871B1 (en) * | 2020-04-14 | 2020-10-21 | 삼익티에이치케이 주식회사 | Dust collection bag for dust collection equipment |
-
2021
- 2021-04-22 CN CN202110463122.4A patent/CN113123802B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010036272A (en) * | 1999-10-07 | 2001-05-07 | 고영래 | Floating matter remove treatment apparatus |
| CN204402511U (en) * | 2014-12-31 | 2015-06-17 | 中国建筑第五工程局有限公司 | Inverted arch trestle |
| CN105863665A (en) * | 2016-04-07 | 2016-08-17 | 石河子大学 | Disposing method for dross of stone tunnel invert |
| KR102167871B1 (en) * | 2020-04-14 | 2020-10-21 | 삼익티에이치케이 주식회사 | Dust collection bag for dust collection equipment |
| CN111691902A (en) * | 2020-06-04 | 2020-09-22 | 中交一公局集团有限公司 | Tunnel inverted arch construction process |
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| Publication number | Publication date |
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| CN113123802A (en) | 2021-07-16 |
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