CN109488336B - Tunnel secondary lining vault pouring observation method - Google Patents
Tunnel secondary lining vault pouring observation method Download PDFInfo
- Publication number
- CN109488336B CN109488336B CN201811345597.8A CN201811345597A CN109488336B CN 109488336 B CN109488336 B CN 109488336B CN 201811345597 A CN201811345597 A CN 201811345597A CN 109488336 B CN109488336 B CN 109488336B
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- pipe
- connecting outer
- outer pipe
- plastic inner
- secondary lining
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000004033 plastic Substances 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 3
- 238000009415 formwork Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel secondary lining vault pouring observation method, which comprises the following steps that A, a first connecting outer pipe is arranged at the highest arch degree point of a tunnel secondary lining trolley template, and the first connecting outer pipe is connected with and penetrates through the template; b, sleeving a plastic inner pipe in the first connecting outer pipe, wherein a notch is formed in the port wall of one end, facing the second liner, of the plastic inner pipe, a sealing part is arranged between the inner wall of the pipe orifice of the first connecting outer pipe and the outer wall of the plastic inner pipe, and the length of the plastic inner pipe extending into the second liner is adjusted, so that one end provided with the notch is in contact with the primary support structure; c, sleeving a second connecting outer pipe on the plastic inner pipe, wherein the second connecting outer pipe is connected to the first connecting outer pipe, a fastening part is arranged on the second connecting outer pipe, and the second connecting outer pipe and the plastic inner pipe are fastened and connected by adjusting the fastening part; and D, grouting and vibrating a secondary lining pouring area between the template and the primary support structure through the concrete conveying pipe, keeping grouting for 5-10min after slurry flows out of the plastic inner pipe, and then sealing the pipe orifice of the plastic inner pipe to finish pouring of secondary lining concrete.
Description
Tunnel secondary lining vault pouring observation method
Technical Field
The invention relates to the field of tunnel construction, in particular to a tunnel secondary lining vault pouring observation method.
Background
After the existing tunnel secondary lining vault concrete pouring construction, through geological radar detection, a plurality of cavities are easily formed in the vault, and the reasons for forming the vault cavities comprise over excavation, loosening and separating of a tunnel primary supporting structure, or insufficient concrete pouring and the like.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, the existing tunnel secondary lining vault concrete pouring construction easily causes a plurality of cavities in the vault area due to the fact that concrete is not fully poured, and the quality defect is caused, and provides a tunnel secondary lining vault pouring observation method.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for observing the pouring of a tunnel secondary lining vault comprises the following steps:
A. arranging a first connecting outer pipe at the highest camber point of a template of the tunnel secondary lining trolley, wherein the first connecting outer pipe is connected with and penetrates through the template;
B. a plastic inner pipe is sleeved in the first connecting outer pipe, a notch is formed in the end opening wall of one end, facing the second liner, of the plastic inner pipe, a sealing part is arranged between the inner wall of the pipe opening of the first connecting outer pipe and the outer wall of the plastic inner pipe, the length of the plastic inner pipe extending into the second liner is adjusted, and the end provided with the notch is made to contact with the primary support structure;
C. sleeving a second connecting outer pipe on the plastic inner pipe, wherein the second connecting outer pipe is connected to the first connecting outer pipe, a fastening part is arranged on the second connecting outer pipe, and the fastening part is adjusted to tightly connect the second connecting outer pipe and the plastic inner pipe;
D. and grouting and vibrating a secondary lining pouring area between the template and the primary support structure through a concrete conveying pipe, keeping grouting for 5-10min after slurry flows out of the plastic inner pipe, and then sealing the pipe orifice of the plastic inner pipe to finish pouring of secondary lining concrete.
By adopting the observation method for pouring the vault of the secondary tunnel lining, disclosed by the invention, in the pouring construction of concrete of the vault of the secondary tunnel lining, a relatively closed pouring space is formed between the template and the primary support structure, the notch of the plastic inner pipe is contacted with the primary support structure, and the secondary lining concrete is poured and vibrated.
Preferably, after the step D is completed, when the two-lining trolley is demolded, the fastening part is loosened, the template is separated from the two linings, the exposed plastic inner tube is cut off, and the tube opening is sealed.
Preferably, the plastic inner tube is cut off and then the orifice is sealed by epoxy resin.
Preferably, in the step B, in consideration of the flowing trend of the concrete mixture state and the misjudgment of the pressure action when the concrete mixture exits the grouting machine, the distance between the notch and the primary support structure is 2-5 cm.
Preferably, the first connecting outer pipe and the second connecting outer pipe are connected by flanges.
Preferably, the sealing member is disposed between the outer wall of the plastic inner pipe and the inner wall of the first connecting outer pipe.
Preferably, the sealing component comprises an annular sealing gasket or a plurality of sealing rings which are arranged adjacently in sequence.
Preferably, the first connecting outer pipe, the second connecting outer pipe and the template are all steel structural members, and the pipe wall of the first connecting outer pipe penetrates through and is welded to the template.
Preferably, the plastic inner pipe is a PVC pipe.
Preferably, the fastening member includes at least one pair of fastening bolts disposed oppositely.
Preferably, the pipe wall of the second connecting outer pipe is provided with at least one pair of oppositely arranged screw holes, and the screw holes are matched with the fastening bolts.
Preferably, the notch is a straight-line channel or a cross-shaped channel arranged at the end part of the plastic inner pipe.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
by applying the observation method for pouring the vault of the secondary tunnel lining, disclosed by the invention, in the concrete pouring construction of the vault of the secondary tunnel lining, a relatively closed pouring space is formed between the template and the primary support structure, the notch of the plastic inner pipe is contacted with the primary support structure, and the secondary lining concrete is poured and vibrated, when the concrete slurry flows out of the plastic inner pipe, the secondary lining is poured and filled compactly, so that the problem that the concrete pouring saturation degree is difficult to judge in the pouring process of the existing method can be effectively solved, the observation method is simple in step and convenient to use, the qualification rate of the secondary lining after use is high, and the treatment cost and hidden danger of a large number of problems caused by cavities in the later period are effectively reduced.
Drawings
FIG. 1 is a schematic flow chart of a tunnel secondary lining vault pouring observation method according to the present invention;
fig. 2 is a schematic structural diagram of the tunnel secondary lining vault pouring observation tube device.
The labels in the figure are: 1-a first connecting outer pipe, 2-a second connecting outer pipe, 3-a plastic inner pipe, 31-a notch, 4-a sealing part, 5-a fastening part, 6-a template and 7-a primary support structure.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Examples
As shown in fig. 1-2, the method for observing the pouring of the vault of the tunnel secondary lining comprises the following steps:
A. arranging a first connecting outer pipe 1 at the highest arch degree point of a tunnel secondary lining trolley template 6, wherein the first connecting outer pipe 1 and the template 6 are both steel structural members, and the pipe wall of the first connecting outer pipe 1 penetrates through and is welded to the template 6;
B. the plastic inner pipe 3 is sleeved in the first connecting outer pipe 1, the plastic inner pipe 3 is a PVC pipe, a notch 31 is formed in the port wall of one end, facing the second lining, of the plastic inner pipe 3, the notch 31 is a straight-line-shaped channel, the sealing part 4 is arranged between the outer wall of the plastic inner pipe 3 and the inner wall of the first connecting outer pipe 1, the sealing part 4 comprises an annular sealing gasket, the length of the plastic inner pipe 3 extending into the second lining is adjusted, and one end provided with the notch 31 is made to contact with the primary support structure 7;
C. a second connecting outer pipe 2 is sleeved on the plastic inner pipe 3, the second connecting outer pipe 2 is a steel structural member, the second connecting outer pipe 2 is connected with the first connecting outer pipe 1 in a flange mode, a fastening part 5 is arranged on the second connecting outer pipe 2, the fastening part 5 comprises two pairs of fastening bolts which are arranged oppositely, the two pairs of fastening bolts are cross-shaped and are arranged in a vertically staggered mode, two pairs of screw holes which are arranged oppositely are formed in the pipe wall of the second connecting outer pipe 2, the screw holes are matched with the fastening bolts, and the fastening part 5 is adjusted to enable the second connecting outer pipe 2 to be connected with the plastic inner pipe 3 in a fastening mode;
D. grouting and vibrating a secondary lining pouring area between the template 6 and the primary support structure 7 through a concrete conveying pipe, keeping grouting for 5-10min after slurry flows out of the plastic inner pipe 3, and then sealing the orifice of the plastic inner pipe 3 to finish pouring of secondary lining concrete.
E. And when the two-lining trolley is demoulded, loosening the fastening part 5, separating the template 6 from the two linings, cutting the exposed plastic inner pipe 3, and plugging the pipe orifice by using epoxy resin.
As a preferable scheme of this embodiment, in the step B, in consideration of the flowing tendency of the concrete mixture state and the erroneous judgment caused by the pressure action when the concrete mixture exits the grouting machine, the distance between the notch 31 and the primary support structure 7 is 3 cm.
By applying the observation method for pouring the vault of the secondary tunnel lining, disclosed by the invention, in the concrete pouring construction of the vault of the secondary tunnel lining, a relatively closed pouring space is formed between the template 6 and the primary support structure 7, the notch 31 of the plastic inner pipe 3 is contacted with the primary support structure 7, the secondary lining concrete is poured and vibrated, when the concrete slurry flows out of the plastic inner pipe 3, the secondary lining base is poured and filled compactly, the problem that the concrete pouring saturation degree is difficult to judge in the pouring process of the existing method can be effectively solved, the observation method is simple in step and convenient to use, the qualification rate of the secondary lining after use is high, and a large number of problems and treatment costs and hidden dangers caused by cavities in the later period are effectively reduced.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for observing the pouring of a tunnel secondary lining vault is characterized by comprising the following steps:
A. arranging a first connecting outer pipe (1) at the highest arch degree point of a tunnel secondary lining trolley template (6), wherein the first connecting outer pipe (1) is connected with and penetrates through the template (6);
B. a plastic inner pipe (3) is sleeved in the first connecting outer pipe (1), a notch (31) is formed in the port wall of one end, facing the second lining, of the plastic inner pipe (3), a sealing part (4) is arranged between the inner wall of the pipe orifice of the first connecting outer pipe (1) and the outer wall of the plastic inner pipe (3), the length of the plastic inner pipe (3) extending into the second lining is adjusted, and one end provided with the notch (31) is made to contact with the primary support structure (7);
C. a second connecting outer pipe (2) is sleeved on the plastic inner pipe (3), the second connecting outer pipe (2) is connected to the first connecting outer pipe (1), a fastening part (5) is arranged on the second connecting outer pipe (2), and the fastening part (5) is adjusted to fixedly connect the second connecting outer pipe (2) and the plastic inner pipe (3);
D. grouting and vibrating a secondary lining pouring area between the template (6) and the primary support structure (7) through a concrete conveying pipe, keeping grouting for 5-10min after slurry flowing out of the plastic inner pipe (3) is observed, and then sealing the orifice of the plastic inner pipe (3) to finish pouring of secondary lining concrete.
2. The method for observing pouring of the vault of the tunnel secondary lining according to claim 1, wherein after the step D is completed and the secondary lining trolley is demolded, the fastening component (5) is loosened, the template (6) is separated from the secondary lining, the exposed plastic inner pipe (3) is cut off, and the pipe orifice is blocked.
3. The method for observing pouring of the secondary lining vault of the tunnel according to claim 1, wherein in the step B, the distance between the notch (31) and the primary support structure (7) is 2-5 cm.
4. The method for observing the casting of the vault of the tunnel secondary lining according to claim 1, characterized in that the first connecting outer pipe (1) and the second connecting outer pipe (2) are flanged.
5. The method for observing the pouring of the vault of the secondary tunnel lining according to claim 1, characterized in that said sealing means (4) comprise an annular gasket or a plurality of sealing rings disposed adjacent to each other in sequence.
6. The method for observing pouring of the secondary lining vault in the tunnel according to claim 1, wherein the first connecting outer pipe (1), the second connecting outer pipe (2) and the formwork (6) are all steel structural members, and the pipe wall of the first connecting outer pipe (1) penetrates through and is welded to the formwork (6).
7. The method for observing the pouring of the vault of the secondary tunnel lining according to claim 1, wherein the plastic inner pipe (3) is a PVC pipe.
8. Method for the casting of a vault as per claim 1, characterised in that said fastening means (5) comprise at least one pair of fastening bolts arranged opposite each other.
9. The method for observing pouring of the vault of the tunnel secondary lining according to claim 8, wherein at least one pair of oppositely arranged screw holes is arranged on the wall of the second connecting outer pipe (2), and the screw holes are matched with the fastening bolts.
10. Method for the observation of the casting of a vault in a tunnel according to any of claims 1 to 9, characterised in that said notches (31) are in-line or cross-shaped channels provided at the ends of said inner plastic pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345597.8A CN109488336B (en) | 2018-11-13 | 2018-11-13 | Tunnel secondary lining vault pouring observation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811345597.8A CN109488336B (en) | 2018-11-13 | 2018-11-13 | Tunnel secondary lining vault pouring observation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488336A CN109488336A (en) | 2019-03-19 |
| CN109488336B true CN109488336B (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811345597.8A Active CN109488336B (en) | 2018-11-13 | 2018-11-13 | Tunnel secondary lining vault pouring observation method |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07151266A (en) * | 1993-11-30 | 1995-06-13 | Maeda Corp | Installation of settlement measuring rod for buried pipe |
| CN207131421U (en) * | 2017-09-19 | 2018-03-23 | 中铁上海工程局集团有限公司 | Tunnel vault concrete mortar device for casting |
| CN108071406A (en) * | 2018-02-08 | 2018-05-25 | 中铁五局集团有限公司 | A kind of tunnel of follow shot is without empty lining trolley |
| CN207633232U (en) * | 2017-11-28 | 2018-07-20 | 西南交通大学 | A kind of pump concrete slip casting template for bridge strengthening |
| CN108316949A (en) * | 2018-02-08 | 2018-07-24 | 中铁五局集团有限公司 | Umbrella arch is without empty lining process |
| CN207934912U (en) * | 2018-02-08 | 2018-10-02 | 中铁五局集团有限公司 | Tunnel is without empty lining trolley |
-
2018
- 2018-11-13 CN CN201811345597.8A patent/CN109488336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07151266A (en) * | 1993-11-30 | 1995-06-13 | Maeda Corp | Installation of settlement measuring rod for buried pipe |
| CN207131421U (en) * | 2017-09-19 | 2018-03-23 | 中铁上海工程局集团有限公司 | Tunnel vault concrete mortar device for casting |
| CN207633232U (en) * | 2017-11-28 | 2018-07-20 | 西南交通大学 | A kind of pump concrete slip casting template for bridge strengthening |
| CN108071406A (en) * | 2018-02-08 | 2018-05-25 | 中铁五局集团有限公司 | A kind of tunnel of follow shot is without empty lining trolley |
| CN108316949A (en) * | 2018-02-08 | 2018-07-24 | 中铁五局集团有限公司 | Umbrella arch is without empty lining process |
| CN207934912U (en) * | 2018-02-08 | 2018-10-02 | 中铁五局集团有限公司 | Tunnel is without empty lining trolley |
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| Publication number | Publication date |
|---|---|
| CN109488336A (en) | 2019-03-19 |
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