CN206668280U - Beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction - Google Patents
Beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction Download PDFInfo
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- CN206668280U CN206668280U CN201720435013.0U CN201720435013U CN206668280U CN 206668280 U CN206668280 U CN 206668280U CN 201720435013 U CN201720435013 U CN 201720435013U CN 206668280 U CN206668280 U CN 206668280U
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- plastic strip
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Abstract
The utility model discloses a kind of beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction, including section of jurisdiction body, closed hollow plastic strip is circumferentially embedded with the body of section of jurisdiction, the length of hollow plastic strip and the arc length of section of jurisdiction body are adapted, and are spaced apart in hollow plastic strip side wall and are provided with slurry outlet；Closed bar shaped elasticity filling film bag is bonded with the extrados of section of jurisdiction body, corresponds in bar shaped elasticity filling film bag side wall at slurry outlet and is provided with slurry intake, slurry intake is sealed with corresponding slurry outlet and connected；Grout hole and grouting conduit disposed within are reserved with corresponding to hollow plastic strip opening position on the intrados of section of jurisdiction body, one end of grouting conduit connects with hollow plastic strip bore seal and the other end extends outside the body of section of jurisdiction.The utility model advantage is prefabricated pipe section after tail shield is left, and injects dilatant slurry to bar shaped elasticity filling film bag so as to form closed-loop by the grouting conduit being arranged on each section of jurisdiction body intrados of each ring.
Description
Technical field
Double-shielded TBM construction prefabricated pipe section is the utility model is related to, more particularly, to the beans constructed suitable for double-shielded TBM
Gravel rockfill grouting prefabricated pipe section.
Background technology
Double-shielded TBM construction beans gravel backfill and grouting, it is to ensure that the section of jurisdiction of installation does not occur after tail shield is departed from
Deformation and displacement play temporary constraint effect to section of jurisdiction, it is necessary to fill beans gravel in time to the annular gap between section of jurisdiction and country rock；
Cement mortar rockfill grouting is carried out again after the filling of beans gravel, and bulk beans gravel is cemented to the beans gravel adhesive bond of some strength,
And it is cemented together with section of jurisdiction and country rock, common stress is allowed to, forms a self-stabilization structure.Therefore it is required that beans gravel backfill and
Adhesive bond after grouting must be uniformly closely knit.To ensure the uniform density of adhesive bond, grouting should be filled continuously within the specific limits
Note, needed in construction to apply closed-loop according to geological conditions, typically be in the milk to be formed using the continuous domain of dual slurry at present, but often
It can not often completely enclose and spillage, grouting effect is poor.
The content of the invention
The utility model purpose is to provide a kind of beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction.
To achieve the above object, the utility model takes following technical proposals：
Beans gravel rockfill grouting prefabricated pipe section described in the utility model suitable for double-shielded TBM construction, including section of jurisdiction body,
Closed hollow plastic strip, the length of the hollow plastic strip and the arc of section of jurisdiction body are circumferentially embedded with the section of jurisdiction body
It is long to be adapted, it is spaced apart in hollow plastic strip side wall and is provided with least two slurry outlets；Correspond to sky on the extrados of section of jurisdiction body
Heart plastic strip opening position is bonded with closed bar shaped elasticity filling film bag, corresponds in the bar shaped elasticity filling film bag side wall every
The individual pulp hole location is respectively arranged with slurry intake, and each slurry intake seals with corresponding slurry outlet respectively to be connected；
2 ~ 3 grout holes are reserved with corresponding to hollow plastic strip opening position and grouting disposed within is led on the intrados of section of jurisdiction body
Pipe, one end of the grouting conduit connects with hollow plastic strip bore seal and the other end extends outside the body of section of jurisdiction.
The bar shaped elasticity filling film bag is made of elastic woven material, and the green diameter of bar shaped elasticity filling film bag is
100mm, tension force is 125kg/cm at 2.5 times of the elastic stretching of bar shaped elasticity filling film bag to green diameter.
The outer wall transverse shape of the hollow plastic strip is isosceles trapezoidal structure, and the bottom of the isosceles trapezoid is located at
The intrados side of the section of jurisdiction body；The slurry outlet being opened in hollow plastic strip side wall is circular cone type hole, is arranged on described
Slurry intake in bar shaped elasticity filling film bag side wall is the conical tube to match with the pulp bore dia.
Circumferentially it is embedded in hollow plastic strip closed in the section of jurisdiction body, the position in the circumference of section of jurisdiction body
Put.
The utility model advantage is prefabricated pipe section after tail shield is left, by each section of jurisdiction sheet for being arranged on each ring
Grouting conduit in internal cambered surface injects dilatant slurry to bar shaped elasticity filling film bag, and the bar shaped elasticity filling film bag after expansion is most
Major diameter is 25cm, and volume increases by 6.25 times, and so as to form closed-loop, the closed-loop site operation is quick, and cost is low, ensure that
Beans gravel backfills and the continuity of grouting, and can match with TBM speedy drivages, at the same the application of the closed-loop overcome it is existing
The defects of beans gravel backfills and grouting is discontinuous, quality guarantee rate is low, greatly embodies that double-shielded TBM is quick, safe construction
Advantage.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 present invention looks up structural representation.
Fig. 3 is Fig. 1 A-A to structural representation（The bar shaped elasticity filling film bag is in folded position）.
Fig. 4 is the structural representation that bar shaped elasticity filling film bag described in Fig. 3 is in swelling state.
Fig. 5 is Fig. 1 I portions mplifying structure schematic diagram.
The enclosed ring schematic diagram that Fig. 6 is made up of beans gravel rockfill grouting prefabricated pipe section described in the utility model.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, the present embodiment using technical solution of the present invention before
Put and implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
State embodiment.
As Figure 1-5, the beans gravel rockfill grouting prefabricated pipe section described in the utility model suitable for double-shielded TBM construction,
Including section of jurisdiction body 1, closed hollow plastic strip 2 is circumferentially embedded with section of jurisdiction body 1, hollow plastic strip 2 is located at section of jurisdiction
At the circumferential medium position of body 1, the length and the arc length of section of jurisdiction body 1 of hollow plastic strip 2 are adapted, hollow plastic strip 2
Outer wall transverse shape is isosceles trapezoidal structure, and the bottom side wall of hollow plastic strip 2 of isosceles trapezoidal structure is located at section of jurisdiction body 1
Intrados side；It is spaced apart in the upper bottom edge side wall of hollow plastic strip 2 of isosceles trapezoidal structure and is provided with three circular cone slurry outlets, section of jurisdiction
On the extrados of body 1 closed bar shaped elasticity filling film bag 3, bar shaped elasticity are bonded with corresponding to the hollow opening position of plastic strip 2
Circular cone slurry intake 4 is respectively arranged with corresponding to each circular cone pulp hole location in the side wall of filling film bag 3, each circular cone enters slurry
Mouth 4 seals with corresponding circular cone slurry outlet connect respectively；Correspond to the hollow opening position of plastic strip 2 on the intrados of section of jurisdiction body 1
It is spaced apart and is provided with three grout holes and inserts the grouting conduit 5 in it, one end of grouting conduit 5 and the hollow inner chamber of plastic strip 2 is close
Envelope connects and the other end extends outside the intrados of section of jurisdiction body 1.
Bar shaped elasticity filling film bag 3 is made of elastic woven material, and the green diameter of bar shaped elasticity filling film bag 3 is 100mm,
The elastic stretching of bar shaped elasticity filling film bag 3 to tension force at 2.5 times of green diameter is 125kg/cm, i.e.,：When bar shaped elasticity is filled out
It is 125kg/cm to fill the diameter expansion of film bag 3 to tension force at 2.5 times of green diameter.
It is of the present utility model to be summarized as follows using process：
Section of jurisdiction body 1 first coats before TBM construction and installation in three circular cone slurry outlet inner wall surfaces of hollow plastic strip 2
502 glue（Chemical molecular formula is：CH2=C(CN)-COO-C2H5）, then insertion is arranged on bar shaped elasticity filling film bag 3 one by one
Circular cone slurry intake 4 in side wall, finally bar shaped elasticity filling film bag 3 is circumferentially fixed on the extrados of section of jurisdiction body 1, by
In now bar shaped elasticity filling film bag 3 be folded position, as shown in figure 3, to avoid bar shaped elasticity filling film bag 3 from being influenceed after scattering
The installation of section of jurisdiction body 1, the bar shaped elasticity filling film bag 3 for tearing conjunction shape open is bonded on the extrados of section of jurisdiction body 1 by adhesive tape.
As shown in fig. 6, an endless tube piece is installed after releasing tail shield, you can to start to pour into bar shaped elasticity filling film bag 3
Dilatant slurry 6（Dual-component polyurethane, 5-10 times of foaming materials rate, it is desirable to which, when volume increases by 6 ~ 10 times, intensity is not less than
1mpa）, dilatant slurry 6 is by the grouting conduit 5 that is arranged on each intrados of section of jurisdiction body 1 and hollow plastic strip 2 to bar shaped
Injection dilatant slurry 6, the bar shaped elasticity filling film bag 3 of each section of jurisdiction body 1 have been filled in 20 seconds in elastic filling film bag 3
Into bar shaped elasticity filling film bag 3 thick 10cm after the completion of filling becomes to rouse round shape state（As shown in Figure 4）, then begin to expand,
Full, the bar shaped bullet after expansion is filled the gap of the extrados of section of jurisdiction body 1 and country rock according to the gap length in the outside of section of jurisdiction body 1
Property the maximum gauge of filling film bag 3 be 25cm, volume increases by 6.25 times.
The adjacent joining place of two section of jurisdiction body 1 in one endless tube piece, because the both ends of bar shaped elasticity filling film bag 3 equally exist
Ring will also expand, so the end of two adjacent bar elasticity filling film bags 3 is also blocked and can mutually squeezed in seam crossing
Tightly, that is, closed-loop is formd.After the completion of closed-loop, you can start to enter between the outside of section of jurisdiction body 1 of closing interannular and country rock
Row beans gravel fills and rockfill grouting construction.
Claims (4)
1. a kind of beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction, including section of jurisdiction body, it is characterised in that：
Closed hollow plastic strip, the length of the hollow plastic strip and the arc of section of jurisdiction body are circumferentially embedded with the section of jurisdiction body
It is long to be adapted, it is spaced apart in hollow plastic strip side wall and is provided with least two slurry outlets；Correspond to sky on the extrados of section of jurisdiction body
Heart plastic strip opening position is bonded with closed bar shaped elasticity filling film bag, corresponds in the bar shaped elasticity filling film bag side wall every
The individual pulp hole location is respectively arranged with slurry intake, and each slurry intake seals with corresponding slurry outlet respectively to be connected；
2 ~ 3 grout holes are reserved with corresponding to hollow plastic strip opening position and grouting disposed within is led on the intrados of section of jurisdiction body
Pipe, one end of the grouting conduit connects with hollow plastic strip bore seal and the other end extends outside the body of section of jurisdiction.
2. it is suitable to the beans gravel rockfill grouting prefabricated pipe section of double-shielded TBM construction according to claim 1, it is characterised in that：
The bar shaped elasticity filling film bag is made of elastic woven material, and the green diameter of bar shaped elasticity filling film bag is 100mm, bar shaped bullet
The elastic stretching of property filling film bag to tension force at 2.5 times of green diameter is 125kg/cm.
3. the beans gravel rockfill grouting prefabricated pipe section according to claim 1 or claim 2 suitable for double-shielded TBM construction, its feature exists
In：The outer wall transverse shape of the hollow plastic strip is isosceles trapezoidal structure, and the bottom of the isosceles trapezoid is positioned at described
The intrados side of section of jurisdiction body；The slurry outlet being opened in hollow plastic strip side wall is circular cone type hole, is arranged on the bar shaped
Slurry intake in elastic filling film bag side wall is the conical tube to match with the pulp bore dia.
4. the beans gravel rockfill grouting prefabricated pipe section according to claim 1 or claim 2 suitable for double-shielded TBM construction, its feature exists
In：Hollow plastic strip closed in the section of jurisdiction body is circumferentially embedded in, positioned at the circumferential medium position of section of jurisdiction body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435013.0U CN206668280U (en) | 2017-04-24 | 2017-04-24 | Beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435013.0U CN206668280U (en) | 2017-04-24 | 2017-04-24 | Beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668280U true CN206668280U (en) | 2017-11-24 |
Family
ID=60375797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720435013.0U Withdrawn - After Issue CN206668280U (en) | 2017-04-24 | 2017-04-24 | Beans gravel rockfill grouting prefabricated pipe section suitable for double-shielded TBM construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN206668280U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590702A (en) * | 2018-04-19 | 2018-09-28 | 陈胜玉 | Tunnel arch and its installation method with back sticking type granular media filling baggy fabric |
| CN108590703A (en) * | 2018-04-19 | 2018-09-28 | 陈胜玉 | Tunnel arch and its installation method with elastic slip casting bag |
| CN108708752A (en) * | 2018-07-27 | 2018-10-26 | 西南交通大学 | The method that the tunnels TBM apply the supporting apparatus and beans gravel rockfill grouting of section of jurisdiction |
-
2017
- 2017-04-24 CN CN201720435013.0U patent/CN206668280U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590702A (en) * | 2018-04-19 | 2018-09-28 | 陈胜玉 | Tunnel arch and its installation method with back sticking type granular media filling baggy fabric |
| CN108590703A (en) * | 2018-04-19 | 2018-09-28 | 陈胜玉 | Tunnel arch and its installation method with elastic slip casting bag |
| CN108708752A (en) * | 2018-07-27 | 2018-10-26 | 西南交通大学 | The method that the tunnels TBM apply the supporting apparatus and beans gravel rockfill grouting of section of jurisdiction |
| CN108708752B (en) * | 2018-07-27 | 2023-11-24 | 西南交通大学 | Temporary supporting device for TBM tunnel construction segment and bean gravel backfill grouting method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20181228 |