CN109356613A - A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method - Google Patents
A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method Download PDFInfo
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- CN109356613A CN109356613A CN201811517698.9A CN201811517698A CN109356613A CN 109356613 A CN109356613 A CN 109356613A CN 201811517698 A CN201811517698 A CN 201811517698A CN 109356613 A CN109356613 A CN 109356613A
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- hole
- section
- jurisdiction
- anchor pole
- grouting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of TBM construction diversion tunnel segment deformation permanent reinforcement methods, comprising the following steps: step 1 is installed longitudinal joint twice 12# channel steel and fixed with anchor pole；Step 2, the permanent horizontal support of installation；Step 3 reinforce in circumferential direction 15#H fashioned iron；Step 4, backfill beans gravel and grouting；Step 5, tunneling boring consolidation grouting reinforce country rock；Step 6 removes circumferential bracing members and horizontal temporary support；Step 7, using plus nano, crude fibre gunite concrete or form concrete lining cutting and supporting outside C30 thickness 20cm.The present invention makes full use of anchor pole and consolidation grouting to reinforce country rock；Determine that section of jurisdiction is horizontal temporary support that is stable, can removing circumferential fashioned iron and implement by monitoring.If the outer water of country rock influences further to deteriorate, drainage hole is set when necessary, realizes diversion tunnel segment deformation permanent reinforcement.The present invention has the characteristics that easy to operate, work efficiency is high, consolidation effect is good, is suitble to promote and apply.
Description
Technical field
The invention belongs to hydraulic engineering technical fields, are related to a kind of TBM construction diversion tunnel segment deformation permanent reinforcement side
Method.
Background technique
Pipe-plate lining is the main mounting structure of TBM diversion tunnel, and section of jurisdiction form is to determine liner structure safety and TBM
The key factor of tunnel fltting speed.Double Shield TBM drivings almost carry out simultaneously with pipe-plate lining, with rapid construction
Feature, but can pipe-plate lining bear the high internal water pressure effect of diversion tunnel at waterpower station, be to determine that can diversion tunnel use section of jurisdiction
Lining cutting and
One of the key of TBM construction.Once diversion tunnel section of jurisdiction deforms, it is necessary to use relevant reinforcement means.
Currently, in the prior art, being badly in need of a kind of TBM construction diversion tunnel segment deformation permanent reinforcement method.
Summary of the invention
The purpose of the present invention is to provide a kind of TBM construction diversion tunnel segment deformation permanent reinforcement methods.
Itself the specific technical proposal is:
A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method, comprising the following steps:
Step 1 is installed longitudinal joint twice 12# channel steel and is fixed with anchor pole；
Step 2, the permanent horizontal support of installation；
Step 3 reinforce in circumferential direction 15#H fashioned iron；
Step 4, backfill beans gravel and grouting；
Step 5, tunneling boring consolidation grouting reinforce country rock；
Step 6 removes circumferential bracing members and horizontal temporary support；
Step 7, using plus nano, crude fibre gunite concrete or form concrete lining cutting and supporting outside C30 thickness 20cm.
Further, it is greater than the hole 7cm section in segment deformation, using reinforcing in 15#H fashioned iron, closes bottom arch, the row of reinforcing when necessary
Away from about 40cm, circumferential bracing members not cover section of jurisdiction installation hole location when installing, and side bottom longitudinal direction joist H steel uses expansion bolt and anchor
Bar is fixed on section of jurisdiction inner edge, and welds with circumferential direction support；Longitudinal joint uses limit steel plate and twice 12# channel steel, and and Ф on section of jurisdiction
32 hollow grouting anchor end firm weldings, boring aperture Ф 50, horizontal space 80cm, upper longitudinal joint processing, the long 7.28m of anchor pole；
Side crown consolidation grouting, the long 6.28m of anchor pole；The side long 5.28m of lower arch anchor pole；Encircle the long 3.28m of anchor pole in bottom；Tunneling boring consolidation grouting point
Two sequences carry out, and 1 sequence hole carries out slip casting, hollow bolt array pitch 3.2m, aperture using section of jurisdiction mounting hole and 32 hollow grouting anchor of Ф
50, the 2 sequence hole Ф is arranged between 1 sequence hole, the same sequence hole of the parameters such as bolthole hole diameter, material, hole depth, 2 sequence hole consolidation groutings
In 1 sequence hole, grouting carries out after completing 10 days.2cm thickness billet and firm welding is arranged in anchor pole end, using CK mortar mushroom head
Safeguard procedures, and be smoothly smoothly connected with section of jurisdiction.
Further, in the 3cm≤deformation≤hole 7cm section, using reinforcing in 15#H fashioned iron, bottom arch, the row of reinforcing are closed when necessary
Away from about 80cm, side bottom longitudinal direction joist H steel is fixed on section of jurisdiction inner edge using expansion bolt and anchor pole, and welds with circumferential direction support；Pipe
On piece longitudinal joint using limit steel plate and twice 12# channel steel, and with 32 hollow grouting anchor end firm welding of Ф, boring aperture Ф
50, horizontal space 80cm, side crown rock-bolt length 5.28m；Encircle the long 2.28m of anchor pole in bottom；Tunneling boring system consolidation grouting is divided to two sequences
It carries out, hole location, Ф 32 hollow bolt array pitch 3.2m, aperture Ф 50, the side long 5.28m of crown anchor pole, 2 are installed using section of jurisdiction in 1 sequence hole
Sequence hole is arranged between 1 sequence hole, and the same sequence hole of the parameters such as bolthole hole diameter, material, hole depth, 2 sequence hole consolidation groutings are in 1 sequence hole
Grouting carries out after completing 10 days.It is arranged using 2cm thickness billet and firm welding using the protection of CK mortar mushroom head anchor pole end
It applies, and is smoothly smoothly connected with section of jurisdiction.In detail
Further, it is less than the hole 3cm section in segment deformation, upstream face uses CK mortar slope ratio for 1:6, and downstream is that 1:3 is smooth
It is smoothly connected；IV, it after V class surrounding rock hole section answers retention level temporary support, is backfilled and is consolidated by related design requirement and attached drawing
Knot grouting.
Further, whole deformation section is all made of the permanent horizontal support in section of jurisdiction and reinforces, i.e., uses two side pipe piece angle positions
65 × 4.0 coating steel pipe of Ф carries out permanent horizontal support；Segment deformation is greater than the hole 7cm section, and permanent horizontal support spacing is 80cm；Deformation
The hole 3~7cm section, permanent horizontal support spacing are 1.6m.
Further, larger position is deformed to limit steel plate or upper longitudinal joint, should be carried out at surface using linked network and CK mortar
It manages and is smoothly smoothly connected in section of jurisdiction；The net protective layer of steel plate and anchor pole end and upper longitudinal joint 12# channel steel CK mortar is not less than
4cm。
Further, in step 7, if the outer water of country rock influences further to deteriorate, drainage hole is set when necessary.
Compared with prior art, beneficial effects of the present invention:
Technical solution of the present invention makes full use of anchor pole and consolidation grouting to reinforce country rock；Determine that section of jurisdiction is stable by monitoring
, the horizontal temporary support that circumferential fashioned iron can be removed and implemented.If the outer water of country rock influences further to deteriorate, set when necessary
Drainage hole, to realize diversion tunnel segment deformation permanent reinforcement.The present invention is with easy to operate, work efficiency is high, reinforces effect
The good feature of fruit is suitble to promote and apply.
Specific embodiment
Technical solution of the present invention is described in more detail below with reference to embodiment.
Diversion tunnel (pile No. K12+459~K12+607) segment deformation (faulting of slab ends) permanent reinforcement solution technique is required such as
Under:
1, segment deformation section Scheme of Strengthening and technical requirements
(1) Scheme of Strengthening is suitable for drawing big Ji the Huangshui River water transfer general main canal water diversion engineering tunnel segment deformation section (pile No. K12+459
~K12+607), the program point second phase carries out.
One phase: anchor pole and consolidation grouting is made full use of to reinforce country rock；By monitor determine section of jurisdiction be it is stable, can remove
Circumferential fashioned iron and the horizontal temporary support implemented.
Second phase: if the outer water of country rock influences further to deteriorate, drainage hole is set when necessary.
(2) one phase processing schemes.
1) it is greater than the hole 7cm section in section of jurisdiction faulting of slab ends, using being reinforced in 15#H fashioned iron, closes bottom arch when necessary, reinforce array pitch about
40cm, circumferential bracing members not cover section of jurisdiction installation hole location when installing, side bottom longitudinal direction joist H steel is solid using expansion bolt and anchor pole
It is scheduled on section of jurisdiction inner edge, and is welded with circumferential direction support；Longitudinal joint is using limit steel plate and twice 12# channel steel on section of jurisdiction, and in Ф 32
Empty grouted anchor bar end firm welding (boring aperture Ф 50, horizontal space 80cm, upper longitudinal joint processing, the long 7.28m of anchor pole；Side top
Encircle consolidation grouting, the long 6.28m of anchor pole；The side long 5.28m of lower arch anchor pole；Encircle the long 3.28m of anchor pole in bottom)；Tunneling boring consolidation grouting is divided to two
Sequence carries out, and 1 sequence hole carries out slip casting, hollow bolt array pitch 3.2m, aperture Ф using section of jurisdiction mounting hole and 32 hollow grouting anchor of Ф
50,2 sequence holes are arranged between 1 sequence hole, and the same sequence hole of the parameters such as bolthole hole diameter, material, hole depth, 2 sequence hole consolidation groutings are 1
The grouting of sequence hole carries out after completing 10 days.2cm thickness billet and firm welding is arranged in anchor pole end, is protected using CK mortar mushroom head
Measure, and be smoothly smoothly connected with section of jurisdiction.
2) in the 3cm≤faulting of slab ends≤hole 7cm section, using being reinforced in 15#H fashioned iron, bottom arch is closed when necessary, reinforces array pitch about
80cm, side bottom longitudinal direction joist H steel is fixed on section of jurisdiction inner edge using expansion bolt and anchor pole, and welds with circumferential direction support；On section of jurisdiction
Longitudinal joint using limit steel plate and twice 12# channel steel, and with 32 hollow grouting anchor end firm welding of Ф (boring aperture Ф 50,
Horizontal space 80cm, side crown rock-bolt length 5.28m；Encircle the long 2.28m of anchor pole in bottom)；Tunneling boring system consolidation grouting be divided to two sequences into
Hole location, Ф 32 hollow bolt array pitch 3.2m, aperture Ф 50, the side long 5.28m of crown anchor pole, 2 sequences are installed using section of jurisdiction in row, 1 sequence hole
Hole is arranged between 1 sequence hole, and the same sequence hole of the parameters such as bolthole hole diameter, material, hole depth, 2 sequence hole consolidation groutings fill in 1 sequence hole
Slurry carries out after completing 10 days.Anchor pole end is using 2cm thickness billet and firm welding, using CK mortar mushroom head safeguard procedures,
And it is smoothly smoothly connected with section of jurisdiction.
3) it is less than the hole 3cm section in section of jurisdiction faulting of slab ends, upstream face uses CK mortar slope ratio for 1:6, and downstream is 1:3 smoothly smooth company
It connects；IV, after V class surrounding rock hole section answers retention level temporary support, filling is backfilled and consolidated by related design requirement and attached drawing
Slurry.
4) whole deformation section is all made of the permanent horizontal support in section of jurisdiction and reinforces, i.e., two side pipe piece angle positions using Ф 65 ×
4.0 coating steel pipes carry out permanent horizontal support；Section of jurisdiction faulting of slab ends is greater than the hole 7cm section, and permanent horizontal support spacing is 80cm；3~7cm of faulting of slab ends
Hole section, permanent horizontal support spacing are 1.6m.
5) to the limit steel plate or larger position of upper longitudinal joint dislocation, should be carried out using linked network and CK mortar surface treatment and in
Section of jurisdiction is smoothly smoothly connected；The net protective layer of steel plate and anchor pole end and upper longitudinal joint 12# channel steel CK mortar is not less than 4cm.
(3) the second stage of processing scheme
Second phase is using the outer plus nano of C30 thickness 20cm, crude fibre gunite concrete or form concrete lining cutting and supporting scheme.
2, a phase section of jurisdiction Scheme of Strengthening implementation steps
(1) it installs longitudinal joint twice 12# channel steel and is fixed with anchor pole；
(2) permanent horizontal support is installed；
(3) it carries out reinforcing in circumferential direction 15#H fashioned iron；
(4) beans gravel and grouting are backfilled；
(5) tunneling boring consolidation grouting reinforces country rock；
(6) circumferential bracing members and horizontal temporary support are removed.
3, it checks and checks and accepts
It is executed by country and the related clause of industry current standard.
4, other
(1) position to generator tube piece crack and the hole larger position of section faulting of slab ends, should reinforce safety monitoring work.
(2) faulting of slab ends larger position in longitudinal joint part on section of jurisdiction, should carry out specially treated；If circumferential bracing members are at this faulting of slab ends position
It is then welded with the support of interim steel plate, it is ensured that circumferential H profile steel forms continuous support.
(3) project amount is by actually occurring meter amount.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (7)
- A kind of diversion tunnel segment deformation permanent reinforcement method 1. TBM constructs, which comprises the following steps:Step 1 is installed longitudinal joint twice 12# channel steel and is fixed with anchor pole；Step 2, the permanent horizontal support of installation；Step 3 reinforce in circumferential direction 15#H fashioned iron；Step 4, backfill beans gravel and grouting；Step 5, tunneling boring consolidation grouting reinforce country rock；Step 6 removes circumferential bracing members and horizontal temporary support；Step 7, using plus nano, crude fibre gunite concrete or form concrete lining cutting and supporting outside C30 thickness 20cm.
- The diversion tunnel segment deformation permanent reinforcement method 2. TBM according to claim 1 constructs, which is characterized in that in pipe Piece deformation is greater than the hole 7cm section, using reinforcing in 15#H fashioned iron, closes bottom arch when necessary, reinforcing array pitch is 40cm, circumferential bracing members Installation hole location in section of jurisdiction is not covered when installation, side bottom longitudinal direction joist H steel is fixed on section of jurisdiction inner edge using expansion bolt and anchor pole, and It is welded with circumferential direction support；Longitudinal joint is welded using limit steel plate and twice 12# channel steel, and with the 32 hollow grouting anchor end Ф on section of jurisdiction It connects securely, boring aperture Ф 50, horizontal space 80cm, upper longitudinal joint processing, the long 7.28m of anchor pole；Side crown consolidation grouting, anchor pole are long 6.28m；The side long 5.28m of lower arch anchor pole；Encircle the long 3.28m of anchor pole in bottom；Tunneling boring consolidation grouting is divided to two sequences to carry out, and 1 sequence hole utilizes pipe Piece mounting hole and 32 hollow grouting anchor of Ф carry out slip casting, and 50, the 2 sequence hole hollow bolt array pitch 3.2m, aperture Ф is arranged in 1 sequence hole Between, the same sequence hole of bolthole hole diameter, material, hole depth, 2 sequence hole consolidation groutings carry out after the grouting of 1 sequence hole is completed 10 days；Anchor 2cm thickness billet and firm welding is arranged in boom end, using CK mortar mushroom head safeguard procedures, and with the smooth smooth company in section of jurisdiction It connects.
- The diversion tunnel segment deformation permanent reinforcement method 3. TBM according to claim 1 constructs, which is characterized in that in 3cm ≤ deformation≤the hole 7cm section closes bottom arch using reinforcing in 15#H fashioned iron when necessary, and reinforcing array pitch is 80cm, side bottom longitudinal direction joist H steel is fixed on section of jurisdiction inner edge using expansion bolt and anchor pole, and welds with circumferential direction support；On section of jurisdiction longitudinal joint using limit steel plate and Twice 12# channel steel, and with 32 hollow grouting anchor end firm welding of Ф, boring aperture Ф 50, horizontal space 80cm, side crown Rock-bolt length 5.28m；Encircle the long 2.28m of anchor pole in bottom；Tunneling boring system consolidation grouting is divided to two sequences to carry out, and 1 sequence hole is installed using section of jurisdiction Hole location, Ф 32 hollow bolt array pitch 3.2m, aperture Ф 50, the side long 5.28m of crown anchor pole, 2 sequence holes are arranged between 1 sequence hole, anchor The same sequence hole of rod aperture hole diameter, material, hole depth, 2 sequence hole consolidation groutings carry out after the grouting of 1 sequence hole is completed 10 days；Anchor pole end Using 2cm thickness billet and firm welding, using CK mortar mushroom head safeguard procedures, and smoothly it is smoothly connected with section of jurisdiction.
- The diversion tunnel segment deformation permanent reinforcement method 4. TBM according to claim 1 constructs, which is characterized in that in pipe Piece deforms less than the hole 3cm section, and upstream face uses CK mortar slope ratio for 1:6, and downstream is that 1:3 is smoothly smoothly connected；IV, V class surrounding rock After hole section answers retention level temporary support, backfill and consolidation grouting are carried out by related design requirement and attached drawing.
- The diversion tunnel segment deformation permanent reinforcement method 5. TBM according to claim 1 constructs, which is characterized in that entire Deformation section is all made of the permanent horizontal support in section of jurisdiction and reinforces, i.e., two side pipe piece angle positions using 65 × 4.0 coating steel pipe of Ф into The permanent horizontal support of row；Segment deformation is greater than the hole 7cm section, and permanent horizontal support spacing is 80cm；Deform the hole 3~7cm section, permanent horizontal branch Tie distance is 1.6m.
- The diversion tunnel segment deformation permanent reinforcement method 6. TBM according to claim 1 constructs, which is characterized in that limit Position steel plate or upper longitudinal joint deform larger position, surface treatment should be carried out using linked network and CK mortar and in the smooth smooth company in section of jurisdiction It connects；The net protective layer of steel plate and anchor pole end and upper longitudinal joint 12# channel steel CK mortar is not less than 4cm.
- The diversion tunnel segment deformation permanent reinforcement method 7. TBM according to claim 1 constructs, which is characterized in that step 7 In, if the outer water of country rock influences further to deteriorate, drainage hole is set when necessary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517698.9A CN109356613A (en) | 2018-12-12 | 2018-12-12 | A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517698.9A CN109356613A (en) | 2018-12-12 | 2018-12-12 | A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method |
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| Publication Number | Publication Date |
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| CN109356613A true CN109356613A (en) | 2019-02-19 |
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ID=65330641
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|---|---|---|---|
| CN201811517698.9A Pending CN109356613A (en) | 2018-12-12 | 2018-12-12 | A kind of TBM construction diversion tunnel segment deformation permanent reinforcement method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037793A (en) * | 2014-08-08 | 2016-03-22 | 株式会社大林組 | Repair and reinforcement method for existing tunnel |
| CN105626096A (en) * | 2015-12-31 | 2016-06-01 | 中交一公局第三工程有限公司 | Pea gravel hydraulic filling construction process for TBM |
| CN105649650A (en) * | 2014-12-03 | 2016-06-08 | 中铁十八局集团有限公司 | Back pea gravel blow filling grouting construction method for single-shield hard rock roadheader after installing TBM pipe piece |
| PL412915A1 (en) * | 2015-06-29 | 2017-01-02 | Główny Instytut Górnictwa | Lining, reinforcing the crossing supports of the mining headings |
-
2018
- 2018-12-12 CN CN201811517698.9A patent/CN109356613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016037793A (en) * | 2014-08-08 | 2016-03-22 | 株式会社大林組 | Repair and reinforcement method for existing tunnel |
| CN105649650A (en) * | 2014-12-03 | 2016-06-08 | 中铁十八局集团有限公司 | Back pea gravel blow filling grouting construction method for single-shield hard rock roadheader after installing TBM pipe piece |
| PL412915A1 (en) * | 2015-06-29 | 2017-01-02 | Główny Instytut Górnictwa | Lining, reinforcing the crossing supports of the mining headings |
| CN105626096A (en) * | 2015-12-31 | 2016-06-01 | 中交一公局第三工程有限公司 | Pea gravel hydraulic filling construction process for TBM |
Non-Patent Citations (2)
| Title |
|---|
| 刘卫丰 等: "《隧道工程》", 31 October 2012, 北京交通大学出版社 * |
| 陈卫忠 等: "TBM 挤压大变形隧洞管片错台及加固机理研究", 《山东大学学报(工学版)》 * |
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Application publication date: 20190219 |