CN113123802A - Tunnel inverted arch virtual slag mechanized cleaning method - Google Patents
Tunnel inverted arch virtual slag mechanized cleaning method Download PDFInfo
- Publication number
- CN113123802A CN113123802A CN202110463122.4A CN202110463122A CN113123802A CN 113123802 A CN113123802 A CN 113123802A CN 202110463122 A CN202110463122 A CN 202110463122A CN 113123802 A CN113123802 A CN 113123802A
- Authority
- CN
- China
- Prior art keywords
- slag
- virtual
- virtual slag
- inverted arch
- working surface
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000007790 scraping Methods 0.000 claims abstract description 35
- 239000002893 slag Substances 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims description 22
- 229920005989 resin Polymers 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 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
- 229920001778 nylon Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 239000002689 soil Substances 0.000 description 2
- 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
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- 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
- E21D9/12—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 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
Landscapes
- 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)
- Cleaning In General (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a method for treating inverted arch slag; the cleaning method comprises the steps of 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 scraper to provide a working surface for a virtual slag collecting bag; further laying a virtual slag collecting bag at the position of scraping the virtual slag; blowing the inverted arch slag onto a slag collecting bag by using a high-pressure air nozzle; recovering 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; the cleaning of the virtual slag on the working surface of the inverted arch is completed by the circulation. 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 inverted arch virtual slag of a tunnel.
Background
With the continuous improvement of railway operation speed, the requirement on the tunnel construction quality is higher and higher, and the combination of the poured concrete and the tunnel is directly influenced by the virtual slag generated in the inverted arch construction. After the inverted arch is excavated, the concrete can be poured only after the virtual slag is cleaned.
At present, tunnel virtual slag is cleaned by manual cleaning, and because the excavated working surface of the tunnel is uneven, the labor intensity of manual operation is high, the virtual slag with smaller particles is difficult to clean, 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 in the prior art, the labor intensity is high, and the investment cost is high, the invention provides a mechanical cleaning method, so that the aims of improving the cleaning efficiency and ensuring the virtual slag scraping quality are fulfilled.
The scheme provided by the invention specifically comprises the following steps:
a tunnel inverted arch virtual slag mechanized cleaning method comprises the following steps:
A. excavating an inverted arch according to design requirements;
B. installing a slag scraper at the connecting end of an excavator bucket of the excavator, scraping off virtual slag on the inverted arch by using the slag scraper, and scraping off the slag from the central line at the lowest position of the inverted arch to two side areas of the central line to form a virtual slag pile and simultaneously form a first working surface;
C. the excavator retreats step by step, and the scraping operation in the step (B) is continuously repeated to form a second working surface; repeating the retreating and scraping operations to form a No. three working surface and a No. four working surface … … n working surface;
D. symmetrically laying two virtual slag collecting bags on the first working surface by taking the central line at the lowest part of the inverted arch as a reference, and aligning the opening ends of the virtual slag collecting bags to a virtual slag pile;
E. blowing the virtual slag into a virtual slag collecting bag by using a high-pressure air nozzle, and then recovering 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 surface by using a high-pressure air nozzle to finish cleaning the first working surface;
F. and (4) paving the virtual slag bags recovered in the step (E) on a second working surface, continuously repeating the operations of the step (D) and the step (E) to finish cleaning the second working surface, and then finishing cleaning the virtual slag of all the working surfaces of the inverted arch on a third working surface and a fourth working surface … … n.
Further, when the virtual slag is blown into the virtual slag collecting bag by the high-pressure air nozzle, the fog spraying water nozzle is opened simultaneously to prevent dust from flying.
Furthermore, 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 sequentially communicated, wherein the open end of the virtual slag collecting bag is arranged on the semi-closed section, and the conical section is provided with a tying opening.
Furthermore, the steel skeleton is made of seamless steel pipes with the diameter of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5 m; the length of the totally-enclosed segment is 1m, and the width of the opening is 0.6 m; the length of the conical section is 0.5 m.
Further, a steel wire rope of a winch on the hydraulic trestle is inserted into a hanging ring of the virtual slag collecting bag, the winch is slowly hung from one end, and the virtual slag automatically flows into the fully-closed section of the virtual slag collecting bag under the action of gravity until the virtual slag completely falls into the conical section; and then the winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter the next working surface to continuously collect the 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 of the excavator, 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 the same as the design structure of the tunnel inverted arch.
Furthermore, the resin scraper head is formed by assembling a plurality of detachable resin pieces.
The beneficial effect that adopts this technical scheme to reach does:
1. the virtual slag scraper is arranged on the hydraulic excavator, realizes mechanical scraping of virtual slag, can cover the full working surface of an inverted arch along with movement of the excavator, realizes long-distance cleaning of tunnel virtual slag, and has high construction efficiency; 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) The virtual slag collecting bag is used for collecting virtual slag, the virtual slag can be blown into the collecting bag by the high-pressure air gun for centralized treatment, a concrete pouring working surface can be rapidly provided, and compared with the traditional mode of adopting a large amount of manual cleaning, the scheme can greatly improve the processing efficiency and reduce the construction cost under the condition of reducing the manual input.
Detailed Description
The following is a description of the principles and features of the present invention, the examples of which are set forth to illustrate the invention and are not intended to limit the scope of the invention.
The embodiment provides a tunnel inverted arch virtual slag mechanized cleaning method, which is used for reducing the labor intensity of operators.
The method comprises the following specific steps:
a, excavating an inverted arch according to design requirements;
and B, installing a slag scraper at the connecting end of the excavator bucket of the excavator, scraping the virtual slag on the inverted arch by using the slag scraper, and scraping the scraping position from the central line at the lowest position of the inverted arch to two side areas of the central line to form a virtual slag pile and simultaneously form a first working surface.
In the embodiment, the excavator is a 6-12 ton hydraulic crawler excavator, a bucket at the front end of an excavator arm of the hydraulic crawler excavator is detached, and a residue soil scraper matched with the bucket is installed; the construction range of the hydraulic crawler excavator is 13-16 meters around the excavator, and two hydraulic crawler excavators are adopted for synchronously clearing the virtual slag in each tunnel.
C, after the first working face is excavated and formed, gradually retreating the excavator, and continuously repeating the scraping operation in the step (B) to form a second working face; so as to repeatedly retreat and scrape; and then repeatedly retreating and scraping to form a No. three working face and a No. four working face … … n working face.
In this embodiment, in order to ensure the cooperative operation of the cleaning work, the length of the working surface (working surface one, working surface two … … n) formed by each scraping by the residue soil scraper is 2-3m, and the total scraping length after completing one working cycle is 12 m; it is understood that when each working surface is formed to a length of 2m, there is one cycle when scraping to n-6; when the length of each work surface formed is 3m, there is one cycle when scraping to n-4.
And D, after one cycle is finished, symmetrically laying two virtual slag collecting bags on the first working surface by taking the center line of the lowest position of the inverted arch as a reference, and aligning the opening ends of the virtual slag collecting bags to the virtual slag pile.
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 recovering the virtual slag collecting bag; meanwhile, the virtual slag remained at the bottom of the virtual slag collecting bag is blown to the virtual slag pile of the second working surface by using the high-pressure air nozzle so as to finish the cleaning of the first working surface.
It should be noted that the high-pressure air nozzle is used for cleaning the virtual slag, the blowing direction is from the edge of the first working surface to the central line of the first working surface, and the inverted arch virtual slag is blown into the virtual slag collecting bag.
And F, paving the virtual slag bags recovered in the step (E) on a second working surface, continuously repeating the operations in the steps (D) and (E) to finish cleaning the second working surface, and then finishing cleaning the virtual slag on all the working surfaces of the inverted arch on a third working surface and a fourth working surface … … n.
The virtual slag collecting bag is moved to a second working surface for laying after being collected on the first working surface, wherein the movement is completed by the aid of a winch on a hydraulic trestle; that is, the steel wire rope of the winch on the hydraulic trestle is inserted into the hanging ring of the virtual slag collecting bag, the winch is lifted slowly from one end, the virtual slag automatically flows into the bottom of the virtual slag collecting bag under the action of gravity at the moment, and then the winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter a second working surface to continuously collect the virtual slag.
By analogy, the virtual slag collecting bags move under the assistance of the windlass 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 the condition that the dust flies upward in the cleaning process to the virtual sediment, the mode of opening the spray shower water nozzle is preferentially selected for use and is carried out the dust fall when the high pressure air nozzle carries out virtual sediment.
Optionally, 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 sequentially communicated, wherein the open end of the virtual slag collecting bag is arranged on the semi-closed section, and the conical section is provided with a tying opening.
Specifically, the steel skeleton is made of seamless steel pipes with the diameter of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5 m; the length of the totally-enclosed segment is 1m, and the width of the opening is 0.6 m; the length of the conical section is 0.5 m.
Virtual slag enters the semi-closed section and the fully-closed section from the opening end in sequence under the blowing action of the high-pressure air nozzle, and all the virtual slag falls into the conical section in the process that the winch begins to lift the virtual slag collecting bag to move; when the virtual slag collecting bag is full, the tying opening 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 of the excavator, 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 the same as the design structure of the tunnel inverted arch.
The scraping efficiency is ensured by arranging the resin scraping head with the same structure as the design structure of the tunnel inverted arch, and the forming quality of each working surface is ensured; and the solidification combination of later-stage pouring concrete is ensured.
Optionally, the resin scraper head is formed by assembling a plurality of detachable resin pieces.
In the embodiment, the width of the resin part is 20-25cm, the length of the resin part is 10-15cm, and a group of resin scraping heads is formed by splicing 5-7 resin parts.
The virtual slag scraper is arranged on the hydraulic excavator, realizes mechanical scraping of virtual slag, can cover the full working surface of an inverted arch along with movement of the excavator, realizes long-distance cleaning of tunnel virtual slag, and has high construction efficiency; the resin scraping head has certain elasticity and can be tightly contacted with the tunnel, so that the scum scraping quality is ensured; utilize high-pressure air gun can blow to the collection bag with virtual sediment and carry out centralized processing, can provide concrete placement working face fast, compare in the mode of traditional adoption a large amount of manual works clearance, this scheme can greatly improve machining efficiency, reduce construction cost under the condition that reduces artifical input.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A tunnel inverted arch virtual slag mechanized cleaning method is characterized by comprising the following steps:
A. excavating an inverted arch according to design requirements;
B. installing a slag scraper at the connecting end of an excavator bucket of the excavator, scraping off virtual slag on the inverted arch by using the slag scraper, and scraping off the slag from the central line at the lowest position of the inverted arch to two side areas of the central line to form a virtual slag pile and simultaneously form a first working surface;
C. the excavator retreats step by step, and the scraping operation in the step (B) is continuously repeated to form a second working surface; repeating the retreating and scraping operations to form a No. three working surface and a No. four working surface … … n working surface;
D. symmetrically laying two virtual slag collecting bags on the first working surface by taking the central line at the lowest part of the inverted arch as a reference, and aligning the opening ends of the virtual slag collecting bags to a virtual slag pile;
E. blowing the virtual slag into a virtual slag collecting bag by using a high-pressure air nozzle, and then recovering 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 surface by using a high-pressure air nozzle to finish cleaning the first working surface;
F. and (4) paving the virtual slag bags recovered in the step (E) on a second working surface, continuously repeating the operations of the step (D) and the step (E) to finish cleaning the second working surface, and then finishing cleaning the virtual slag of all the working surfaces of the inverted arch on a third working surface and a fourth working surface … … n.
2. The mechanical cleaning method for the inverted arch virtual slag of the tunnel according to claim 1, wherein the virtual slag is blown into the virtual slag collecting bag by the high-pressure air nozzle while the mist shower water nozzle is turned on to prevent dust from flying.
3. The mechanical cleaning method for the inverted arch virtual slag of the tunnel 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 sequentially communicated, wherein the open end of the virtual slag collecting bag is arranged on the semi-closed section, and the conical section is provided with a tying opening.
4. The method for mechanically cleaning the inverted arch slag of the tunnel according to claim 3, wherein the steel skeleton is made of seamless steel tubes with the diameter of 40-65 mm; wherein the length of the semi-closed section is 2m, and the width of the opening is 0.5 m; the length of the totally-enclosed segment is 1m, and the width of the opening is 0.6 m; the length of the conical section is 0.5 m.
5. The method for mechanically cleaning the inverted arch virtual slag of the tunnel according to claim 3, wherein 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 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 all the virtual slag falls into a conical section; and then the winch on the hydraulic trestle moves to enable the virtual slag collecting bag to enter the next working surface to continuously collect the virtual slag.
6. The mechanical cleaning method for the inverted arch virtual slag of the tunnel according to claim 1, wherein the slag 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 of the excavator, 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 the same as the design structure of the tunnel inverted arch.
7. The method for mechanically cleaning inverted arch slag of the tunnel according to claim 6, wherein the resin scraper head is assembled by 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113123802A true CN113123802A (en) | 2021-07-16 |
| CN113123802B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876482A (en) * | 2021-08-06 | 2022-08-09 | 山东高速路桥集团股份有限公司 | Tunnel vault virtual sediment cleaning device |
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876482A (en) * | 2021-08-06 | 2022-08-09 | 山东高速路桥集团股份有限公司 | Tunnel vault virtual sediment cleaning device |
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| Publication number | Publication date |
|---|---|
| CN113123802B (en) | 2023-10-24 |
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