CN208502800U - Preventing water leakage tunnel duct piece hand hole blocking structure - Google Patents
Preventing water leakage tunnel duct piece hand hole blocking structure Download PDFInfo
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- CN208502800U CN208502800U CN201821138325.6U CN201821138325U CN208502800U CN 208502800 U CN208502800 U CN 208502800U CN 201821138325 U CN201821138325 U CN 201821138325U CN 208502800 U CN208502800 U CN 208502800U
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- hand hole
- bolt
- nut
- safety cover
- duct piece
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Abstract
The utility model provides a kind of preventing water leakage tunnel duct piece hand hole blocking structure.The plugging structure includes the hand hole being distributed on loop tunnel section of jurisdiction and the bolt that is arranged in hand hole; it is characterized by: being equipped with seal washer in bolt and hand hole aperture junction; and leak stopping layer is equipped with around the nut of bolt; tapped plastic safety cover is covered with outside bolt; the plastic safety cover covers the leak stopping layer around the nut and nut of bolt completely, and micro-expansion cement mortar filler is filled in plastic safety cover.The utility model structure is simple, easy for construction, blocks, good leak-proof effect, can satisfy the anti-corrosive durability requirement of hand hole exerted bolt.
Description
Technical field
The utility model relates to constructing tunnel structure, specifically a kind of preventing water leakage tunnel duct piece hand hole blocking structure.
Background technique
Shield tunnel has been used widely in deep-buried underground engineering, and the life requirement in tunnel includes multiple sides
Face, wherein bolt anti-corrosion measure is the important component of life requirement, so need to block large aperture hand hole,
To meet the anti-corrosive durability requirement of bolt, especially exerted bolt, since bolt is exposed on the external for a long time, it is more easier to corrode.
Existing tunnel duct piece hand hole blocking is mostly to directly adopt the filling of acrylic emulsion corrosion-resistant cement mortar, then
Protected using LDPE: Low-density polyethylene plastics protective cover, acrylic emulsion corrosion-resistant cement mortar have excellent bonding,
Cracking resistance, freeze proof, antiseepage, anti-corrosion, chloride-penetration resistance, ageing-resistant and corrosion resisting property；But the early strength of the plugging structure is low,
If moisture is big in tunnel, hand hole blocking is difficult to construct；Duration is caused centainly to be delayed；And cement mortar and segment bolt or
Person's protective cover binding site is disturbed for a long time after tunnel is open to traffic, and there may be the risks to fall off for cement mortar.
In addition to this, since constructing tunnel is generally in underground, tunnel duct piece hand hole often will appear drainage, existing
Hand hole blocking structure can not solve seepy question, and long-term leak will lead to bolt and corrosion phenomenon occurs, block so as to cause entire
Structure is destroyed.
Summary of the invention
The utility model is insufficient according to prior art to provide that a kind of plugging effect is good, prevents the tunnel duct piece of drainage
Hand hole blocking structure, the plugging structure increase water sealing structure, and hand hole leak can be prevented present, and super early using aluminium sulfate
Strength micro expansion cement is filled, it is possible to reduce hand hole shrinkage cracking, later strength increase, and long-term strength is stablized, after avoiding
Phase cement falls off or the cup later period falls.
Technical solution provided by the utility model: a kind of preventing water leakage tunnel duct piece hand hole blocking structure, including distribution
Hand hole on loop tunnel section of jurisdiction and the bolt being arranged in hand hole, it is characterised in that: in bolt and hand hole aperture junction
Equipped with seal washer, and it is equipped with leak stopping layer around the nut of bolt, tapped plastic safety cover is covered with outside bolt,
The plastic safety cover covers the leak stopping layer around the nut and nut of bolt completely, and is filled in plastic safety cover
Micro-expansion cement mortar filler.
The utility model preferably technical solution: be embedded in the range of 10~20cm around the nut of bolt one or
Multiple slip casting syringe needles led between bolt and hand hole.
The utility model preferably technical solution: the plastic safety cover is LDPE: Low-density polyethylene plastics protective cover, in
The internal thread spacing of wall is 12mm, each part thickness franchise < 0.1mm of protective cover (5), in plastic safety cover internal thread
Between two sections of inner walls be machined with it is multiple increase micro-expansion cement mortar fillers and the occlusion property of plastic safety cover raised zigzags
Irregular triangle point.
The utility model preferably technical solution: the cement in the micro-expansion cement mortar filler is super using aluminium sulfate
Early strength micro expansion cement, sand use the medium coarse sand of 0.25~1mm of partial size, and the mass ratio of cement and sand is 1:1.The sulphur aluminic acid
Salt super hardening micro-expansion cement and medium coarse sand are the product directly bought, and are products more conventional in construction.
The utility model preferably technical solution: the leak stopping layer is to directly adopt leak stopping king padding and compacting around nut
The leakproof water layer formed afterwards.Leak stopping king is the commodity directly bought, and is inorganic a kind of high-performance, collection, alkali-free, waterproof, moisture-proof, anti-
It splits, is impervious, leak stopping is in the newest high-tech product of one.
The utility model has the beneficial effects that
(1) the utility model is provided with sealing rubber ring between hand hole blocking bolt and bolt hole, and increases, and in spiral shell
It is punched within the scope of 10~20cm near bolt, buries slip casting syringe needle, the glue leak stopping of PU grouting leak-stopping can carried out by pressure pump, prevented
Hand hole drainage；
(2) the utility model is filled after being mixed using aluminium sulfate super hardening micro-expansion cement and medium coarse sand, micro- swollen
Free swelling rate is 8~10 × 10-4 to swollen cement in water, can establish the seif-citing rate of 0.2~0.6MPa, meets compensation contraction and wants
It asks, hand hole shrinkage cracking can be reduced；Micro-expansion cement anti-permeability performance is good, with the cement waterproof mortar, labor and material saving, shortening
Duration and durability is good, and early strength is high, later strength increase larger, and long-term strength, which is stablized, to be risen；
(3) it being equipped with internal screw thread in the inner wall of protective cover, filled micro-expansion cement is expansion self-stressed because inside foundation has,
Generate stronger bond stress with bolt hole and cup, and among plastic safety cover internal thread two sections of inner walls be machined with it is multiple
Irregular triangle point, is engaged with reinforcing aluminium sulfate super hardening (microdilatancy) cement with the close of protective cover, avoids later period water
Mud falls off or the cup later period falls；
(4) filler material of the utility model will not be to bolt corrosion.
The utility model structure is simple, easy for construction, blocks, good leak-proof effect, can satisfy hand hole exerted bolt
Anti-corrosive durability requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1-hand hole, 2-bolts, 3-seal washers, 4-leak stopping layers, 5-plastic safety covers, 6-microdilatancy water
Cement mortar filler, 7-slip casting syringe needles.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.A kind of preventing water leakage tunnel duct piece hand as shown in Figure 1
Hole plugging structure, including the hand hole 1 being distributed on loop tunnel section of jurisdiction and the bolt 2 being arranged in hand hole, it is characterised in that:
Bolt 2 and 1 aperture junction of hand hole are equipped with seal washer 3, and leak stopping layer 4 is equipped with around the nut of bolt 2, outside bolt 2
It is covered with tapped plastic safety cover 5, the plastic safety cover 5 is by the leak stopping layer 4 around the nut and nut of bolt 2
It covers completely, and is filled with micro-expansion cement mortar filler 6 in plastic safety cover 5.In order to increase water-stagnating effect, in bolt 2
Nut around one or more slip casting syringe needles 7 led between bolt 2 and hand hole 1 are embedded in the range of 10~20cm, use
Pressure pump carries out the glue leak stopping of PU grouting leak-stopping.
Cement in micro-expansion cement mortar filler 6 described in the utility model uses the microdilatancy of aluminium sulfate super hardening
Cement, sand use the medium coarse sand of 0.25~1mm of partial size, and the mass ratio of cement and sand is 1:1.Micro-expansion cement is free in water
Expansion rate is 8~10 × 10-4, can establish the seif-citing rate of 0.2~0.6MPa, meets compensation and shrinks requirement, can reduce hand hole contraction
Cracking, anti-permeability performance is good, and early strength is high, and later strength growth is larger, and long-term strength, which is stablized, to be risen, and villaumite is free of, to bolt
Non-corroding.
Plastic safety cover 5 in the utility model is LDPE: Low-density polyethylene plastics protective cover, between the internal thread of inner wall
Should uniformly away from the thickness for 12mm, protective cover, each part thickness franchise < 0.1mm, two among 5 internal thread of plastic safety cover
Section inner wall is machined with multiple increase micro-expansion cement mortar fillers 6 and the irregular triangle of the occlusion property of plastic safety cover 5 fiber crops
Point is engaged with reinforcing aluminium sulfate super hardening micro-expansion cement mortar with the close of plastic safety cover 5.
The work progress of the utility model is as follows: all hand holes in tunnel block, the plugging structure in the utility model
It is primarily adapted for use in the closure of exerted bolt, when Specific construction, first bolt is installed in hand hole, is installed simultaneously during installation close
Seal washer, and bolt is tightened, it checks whether leak, then forms leak stopping with leak stopping king padding and compacting around the nut of bolt again
Layer 4, and punched within the scope of nut about 10~20cm, slip casting syringe needle is buried, it is stifled to carry out PU grouting leak-stopping glue with pressure pump
Leakage；Then check whether bolt has corrosion phenomena, as there is obvious corrosion, it is necessary to remove these anvil cinders with wire brush and float
Slag and surface contaminants, then to being cleared up in hand hole, using using aluminium sulfate super hardening (microdilatancy) cement, medium coarse sand and water
Uniform mixing forms aluminium sulfate super hardening (microdilatancy) cement mortar, wherein cement: the mass ratio of sand is 1:1, watering quantity ginseng
Examine the mix ratio of existing hand hole blocking material, it is ensured that it is able to carry out hand hole blocking construction, the aluminium sulfate mixed is super early
(microdilatancy) cement mortar filler material fills hand hole 1 by force, and plastic safety cover 5 is placed on bolt 2.Plastic safety cover internal screw thread
Line spacing is 12mm, and the thickness of protective cover should uniformly, thickness franchise < 0.1mm.Two sections of inner walls add among protective cover internal thread
Work is stung at the irregular triangle point of raised zigzag with reinforcing aluminium sulfate super hardening (microdilatancy) cement and the close of protective cover
It closes.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of preventing water leakage tunnel duct piece hand hole blocking structure, including the hand hole (1) being distributed on loop tunnel section of jurisdiction and setting
Bolt (2) in hand hole, it is characterised in that: seal washer (3) are equipped in bolt (2) and hand hole (1) aperture junction, and
Leak stopping layer (4) are equipped with around the nut of bolt (2), are covered with tapped plastic safety cover (5) outside bolt (2), it is described
Plastic safety cover (5) covers the leak stopping layer (4) around the nut and nut of bolt (2) completely, and in plastic safety cover (5)
It is interior to be filled with micro-expansion cement mortar filler (6).
2. a kind of preventing water leakage tunnel duct piece hand hole blocking structure according to claim 1, it is characterised in that: in bolt (2)
Nut around be embedded with the slip casting syringe needle that one or more is led between bolt (2) and hand hole (1) in the range of 10~20cm
(7)。
3. a kind of preventing water leakage tunnel duct piece hand hole blocking structure according to claim 1 or 2, it is characterised in that: the modeling
Expect that protective cover (5) are LDPE: Low-density polyethylene plastics protective cover, the internal thread spacing of inner wall is 12mm, protective cover (5) it is each
Part thickness franchise < 0.1mm, two sections of inner walls are machined with multiple increase microdilatancies among plastic safety cover (5) internal thread
Cement mortar filler (6) and the irregular triangle point of the raised zigzag of the occlusion property of plastic safety cover (5).
4. a kind of preventing water leakage tunnel duct piece hand hole blocking structure according to claim 1 or 2, it is characterised in that: described micro-
Cement in expansive cement mortar filler (6) uses aluminium sulfate super hardening micro-expansion cement, and sand is using 0.25~1mm's of partial size
The mass ratio of medium coarse sand, cement and sand is 1:1.
5. a kind of preventing water leakage tunnel duct piece hand hole blocking structure according to claim 1 or 2, it is characterised in that: described stifled
Drop ply (4) is the leakproof water layer for directlying adopt leak stopping king and being formed after padding and compacting around nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138325.6U CN208502800U (en) | 2018-07-18 | 2018-07-18 | Preventing water leakage tunnel duct piece hand hole blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138325.6U CN208502800U (en) | 2018-07-18 | 2018-07-18 | Preventing water leakage tunnel duct piece hand hole blocking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502800U true CN208502800U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821138325.6U Active CN208502800U (en) | 2018-07-18 | 2018-07-18 | Preventing water leakage tunnel duct piece hand hole blocking structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307437A (en) * | 2019-08-09 | 2019-10-08 | 中建八局轨道交通建设有限公司 | Tunnel duct piece hand hole protection plug and guard method |
| CN111894628A (en) * | 2020-09-11 | 2020-11-06 | 何峰 | Improved construction method for blocking hand hole of shield tunnel |
| CN113006821A (en) * | 2021-04-21 | 2021-06-22 | 郑州地铁集团有限公司 | Section shield constructs section of jurisdiction connecting bolt fixed end safety cover and connecting bolt |
-
2018
- 2018-07-18 CN CN201821138325.6U patent/CN208502800U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307437A (en) * | 2019-08-09 | 2019-10-08 | 中建八局轨道交通建设有限公司 | Tunnel duct piece hand hole protection plug and guard method |
| CN111894628A (en) * | 2020-09-11 | 2020-11-06 | 何峰 | Improved construction method for blocking hand hole of shield tunnel |
| CN113006821A (en) * | 2021-04-21 | 2021-06-22 | 郑州地铁集团有限公司 | Section shield constructs section of jurisdiction connecting bolt fixed end safety cover and connecting bolt |
| CN113006821B (en) * | 2021-04-21 | 2023-11-21 | 郑州地铁集团有限公司 | Interval shield segment connecting bolt fixing end protecting cover and connecting bolt |
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