CN104929089A - Small-section construction adit plugging structure and construction method thereof - Google Patents
Small-section construction adit plugging structure and construction method thereof Download PDFInfo
- Publication number
- CN104929089A CN104929089A CN201510315492.8A CN201510315492A CN104929089A CN 104929089 A CN104929089 A CN 104929089A CN 201510315492 A CN201510315492 A CN 201510315492A CN 104929089 A CN104929089 A CN 104929089A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- hole
- construction
- longitudinal
- embedded hole
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a small-section construction adit plugging structure and a construction method thereof. The plugging structure comprises a diversion tunnel and a construction adit connected with the diversion tunnel, plugging concrete is arranged in the construction adit, a plurality of consolidation grout holes are distributed in the periphery of the plugging concrete, embedded hole inner steel pipes are arranged in the consolidation grout holes, fixedly welded by manhole steel pipe fixing reinforcements and communicated with longitudinal extraction steel pipes, longitudinal steel pipe fixing reinforcements are fixedly welded on the longitudinal extraction steel pipes, and gaps among the embedded hole inner steel pipes and the consolidation grout holes are plugged by the aid of anchoring agents. The consolidation grout holes can be drilled on vertical bedrock in the construction adit, so that the depths of the consolidation grout holes are shortened, the plugging structure overcomes the shortcomings of poor grouting quality and long construction period due to a fact that a long radial hole is drilled in the end face of the plugging concrete, so that construction quality is improved, cost is saved, and construction period is shortened.
Description
Technical field
The present invention relates to a kind of light section working tunnel plugging structure and construction method thereof, belong to Hydraulic and Hydro-Power Engineering technical field.
Background technology
At present, Hydraulic and Hydro-Power Engineering major part adopts the generating of diversion tunnel formula, for meeting construction of Diversion Tunnels schedule requirement, need design many working tunnel, after working tunnel uses, need carry out shutoff, substitutes diversion tunnel lining cutting country rock, ensures hole lining cutting security of operation.Working tunnel block section consolidation grouting object is in order to Tunnel Reinforcement country rock, closes tunnel periphery rock cranny, improves globality and the non-deformability of Wall Rock of Tunnel, strengthens country rock impermeability, thus deduction and exemption infiltration.In engineering in the past, jacked piles with small section shutoff consolidation grouting mostly adopts beats radiation hole from blocking concrete end face, and the method construction drill is comparatively dark, cannot ensure grouting quality, and difficulty of construction is large, and the duration is relatively long, and construction cost is high.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of light section working tunnel plugging structure and construction method thereof.
The present invention is achieved by the following technical programs.
A kind of light section working tunnel plugging structure, the working tunnel comprising diversion tunnel and be connected with diversion tunnel, blocking concrete is provided with in described working tunnel, some consolidation grouting holes are distributed with in blocking concrete surrounding, be provided with steel pipe in embedded hole in described consolidation grouting hole, in described embedded hole, steel pipe is fixed reinforcement welding by hand-hole steel pipe and is fixed.
In described embedded hole, steel pipe connecting is connected with longitudinal protective steel tube for drawing.
Described longitudinal protective steel tube for drawing is welded with longitudinal steel pipe and fixes reinforcing bar.
Gap in described embedded hole between steel pipe and consolidation grouting hole adopts Anchor Agent shutoff.
A construction method for light section working tunnel plugging structure, mainly comprises following method step:
(1) before blocking concrete is built, rig is adopted to carry out the drilling construction in consolidation grouting hole;
(2) steel pipe in embedded hole is stretched in consolidation grouting hole, adopt hand-hole steel pipe to fix steel-pipe welding in reinforcing bar and embedded hole at each hell position firm;
(3) the longitudinal protective steel tube for drawing of steel pipe in embedded hole is caused outside blocking concrete end face, and according to boring sites in curing and grouting order, steel pipe is numbered;
(4) on longitudinal protective steel tube for drawing, adopt longitudinal steel pipe to fix reinforcement welding to fix, and longitudinal steel pipe is fixed reinforcing bar and is stretched in basement rock;
(5) gap between steel pipe and consolidation grouting hole in Anchor Agent shutoff embedded hole is adopted;
(6), after blocking concrete has been built, consolidation grouting is carried out again according to steel pipe numbering.
The invention has the beneficial effects as follows:
Compared with prior art, the present invention has following remarkable advantage:
(1) of the present invention hole plugging structure can vertically be holed by basement rock, and drilling depth is relatively short, and grouting quality is more easily protected, and then improves consolidation grouting quality;
(2) because vertical basement rock is holed, grout hole location and to enter rock severity control simple, avoids that location, radiation hole is difficult, drilling depth is long and the problem of bit freezing, be consolidation grouting construction is convenient;
(3) this structure only need by embedded steel tube and fixing reinforcement welding before blocking concrete is built, and quick for installation, working procedure is simple;
(4) because drillable length shortens, the engineering time shortens than beating radiation hole, thus substantially reduces the construction period.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the annexation enlarged diagram of steel pipe and longitudinal protective steel tube for drawing in consolidation grouting hole, embedded hole in the present invention;
Fig. 3 is section structure schematic diagram of the present invention.
In figure: 1-consolidation grouting hole, steel pipe in 2-embedded hole, 3-Anchor Agent, reinforcing bar fixed by the longitudinal steel pipe of 4-, and the longitudinal protective steel tube for drawing of 5-, 6-blocking concrete, 7-diversion tunnel, 8-working tunnel, reinforcing bar fixed by 9-hand-hole steel pipe, 10-weld seam.
Detailed description of the invention
Further describe technical scheme of the present invention below, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of light section working tunnel plugging structure of the present invention and construction method thereof, the working tunnel 8 comprising diversion tunnel 7 and be connected with diversion tunnel 7, blocking concrete 6 is provided with in described working tunnel 8, some consolidation grouting holes 1 are distributed with in blocking concrete 6 surrounding, be provided with steel pipe 2 in embedded hole in described consolidation grouting hole 1, in described embedded hole, steel pipe 2 is fixed reinforcing bar 9 by hand-hole steel pipe and is welded and fixed.Adopt the technical program, when being construction, consolidation grouting hole 1 can be bored by vertical basement rock in working tunnel 8, shorten the degree of depth in consolidation grouting hole 1, avoid blocking concrete 6 end face and beat the deficiency that the grouting quality caused in longer radial hole is poor, the construction period is long, and then reach raising construction quality, and cost-saving, the object of reduction of erection time.
In described embedded hole, steel pipe 2 is communicated with longitudinal protective steel tube for drawing 5.When constructing, the longitudinal protective steel tube for drawing 5 of steel pipe 2 in each embedded hole is caused outside blocking concrete 6 end face, and according to boring sites in curing and grouting order, steel pipe is numbered.
Described longitudinal protective steel tube for drawing 5 is welded with longitudinal steel pipe and fixes reinforcing bar 4.When constructing, longitudinal protective steel tube for drawing 5 is adopted longitudinal steel pipe at interval of certain distance and is fixed reinforcing bar 4 and be welded and fixed, and longitudinal steel pipe is fixed reinforcing bar 4 and stretched into basement rock, plays and strengthens fixing effect.
Gap in described embedded hole between steel pipe 2 and consolidation grouting hole 1 adopts Anchor Agent 3 shutoff.When preventing concreting, cement paste infiltrates in hole and causes plug-hole.
As shown in Figure 1 to Figure 3, the present invention is when constructing, and mainly step is carried out as follows:
(1) before blocking concrete 6 is built, rig is adopted to carry out the drilling construction in consolidation grouting hole 1;
(2) steel pipe in embedded hole 2 is stretched in consolidation grouting hole 1, adopt hand-hole steel pipe to fix reinforcing bar 9 and steel pipe 2 firm welding in embedded hole at each hell position, as shown in Figure 2, hand-hole steel pipe is fixed for weld seam 10 inside reinforcing bar 9, and makes hand-hole steel pipe fix reinforcing bar 9 to stretch in basement rock;
(3) the longitudinal protective steel tube for drawing 5 of steel pipe in embedded hole 2 is caused outside blocking concrete end face, and according to boring sites in curing and grouting order, steel pipe is numbered;
(4) on longitudinal protective steel tube for drawing 5, adopt longitudinal steel pipe to fix reinforcing bar 4 to be welded and fixed, and longitudinal steel pipe is fixed reinforcing bar 4 and is stretched in basement rock;
(5) gap between steel pipe 2 and consolidation grouting hole 1 in Anchor Agent 3 shutoff embedded hole is adopted.When preventing concreting, cement paste infiltrates in hole and causes plug-hole;
(6), after blocking concrete 6 has been built, consolidation grouting is carried out again according to steel pipe numbering.
Claims (5)
1. a light section working tunnel plugging structure, it is characterized in that: the working tunnel (8) comprising diversion tunnel (7) and be connected with diversion tunnel (7), blocking concrete (6) is provided with in described working tunnel (8), some consolidation grouting holes (1) are distributed with in blocking concrete (6) surrounding, be provided with steel pipe in embedded hole (2) in described consolidation grouting hole (1), in described embedded hole, steel pipe (2) is fixed reinforcing bar (9) by hand-hole steel pipe and is welded and fixed.
2. a kind of light section working tunnel plugging structure according to claim 1, is characterized in that: in described embedded hole, steel pipe (2) is communicated with longitudinal protective steel tube for drawing (5).
3. a kind of light section working tunnel plugging structure according to claim 2, is characterized in that: described longitudinal protective steel tube for drawing (5) is welded with longitudinal steel pipe and fixes reinforcing bar (4).
4. a kind of light section working tunnel plugging structure according to claim 1, is characterized in that: the gap in described embedded hole between steel pipe (2) and consolidation grouting hole (1) adopts Anchor Agent (3) shutoff.
5. the construction method of light section working tunnel plugging structure as described in claim 1-4 any one, is characterized in that: mainly comprise following method step:
(1) before blocking concrete (6) is built, rig is adopted to carry out the drilling construction of consolidation grouting hole (1);
(2) steel pipe in embedded hole (2) is stretched in consolidation grouting hole (1), adopt at each hell position hand-hole steel pipe to fix reinforcing bar (9) and steel pipe (2) firm welding in embedded hole;
(3) steel pipe in embedded hole (2) longitudinal protective steel tube for drawing (5) is caused outside blocking concrete end face, and according to boring sites in curing and grouting order, steel pipe is numbered;
(4) adopt longitudinal steel pipe to fix reinforcing bar (4) to be welded and fixed longitudinal protective steel tube for drawing (5) is upper, and longitudinal steel pipe is fixed reinforcing bar (4) and is stretched in basement rock;
(5) gap in Anchor Agent (3) shutoff embedded hole between steel pipe (2) and consolidation grouting hole (1) is adopted;
(6), after blocking concrete (6) has been built, consolidation grouting is carried out again according to steel pipe numbering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315492.8A CN104929089A (en) | 2015-06-10 | 2015-06-10 | Small-section construction adit plugging structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315492.8A CN104929089A (en) | 2015-06-10 | 2015-06-10 | Small-section construction adit plugging structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104929089A true CN104929089A (en) | 2015-09-23 |
Family
ID=54116498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510315492.8A Pending CN104929089A (en) | 2015-06-10 | 2015-06-10 | Small-section construction adit plugging structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104929089A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130980A (en) * | 2017-06-28 | 2017-09-05 | 中国水利水电第十四工程局有限公司 | A kind of construction method of tunnel bad geological section consolidation by grouting |
| CN110685256A (en) * | 2019-10-29 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Structure using hydropower station pressure pipeline construction branch tunnel as maintenance channel and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936270A (en) * | 2006-10-20 | 2007-03-28 | 中国水电顾问集团华东勘测设计研究院 | Multilayer enclosing-rock cement-grouting consolidation ring tunnel bearing structure and its construction method |
| JP4656583B2 (en) * | 2006-07-21 | 2011-03-23 | ライト工業株式会社 | Tube burial method |
| CN202544925U (en) * | 2012-04-13 | 2012-11-21 | 中国水电顾问集团华东勘测设计研究院 | One-hole dual-purpose tunnel drain hole structure |
| CN204000874U (en) * | 2014-07-29 | 2014-12-10 | 中国电建集团贵阳勘测设计研究院有限公司 | The structure of a kind of concrete plug backfill grouting |
| CN204753542U (en) * | 2015-06-10 | 2015-11-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Light section construction branch tunnel block structure |
-
2015
- 2015-06-10 CN CN201510315492.8A patent/CN104929089A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4656583B2 (en) * | 2006-07-21 | 2011-03-23 | ライト工業株式会社 | Tube burial method |
| CN1936270A (en) * | 2006-10-20 | 2007-03-28 | 中国水电顾问集团华东勘测设计研究院 | Multilayer enclosing-rock cement-grouting consolidation ring tunnel bearing structure and its construction method |
| CN202544925U (en) * | 2012-04-13 | 2012-11-21 | 中国水电顾问集团华东勘测设计研究院 | One-hole dual-purpose tunnel drain hole structure |
| CN204000874U (en) * | 2014-07-29 | 2014-12-10 | 中国电建集团贵阳勘测设计研究院有限公司 | The structure of a kind of concrete plug backfill grouting |
| CN204753542U (en) * | 2015-06-10 | 2015-11-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Light section construction branch tunnel block structure |
Non-Patent Citations (1)
| Title |
|---|
| 任德林等: "《水工建筑物》", 30 June 2004 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130980A (en) * | 2017-06-28 | 2017-09-05 | 中国水利水电第十四工程局有限公司 | A kind of construction method of tunnel bad geological section consolidation by grouting |
| CN110685256A (en) * | 2019-10-29 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Structure using hydropower station pressure pipeline construction branch tunnel as maintenance channel and construction method |
| CN110685256B (en) * | 2019-10-29 | 2021-06-04 | 黄河勘测规划设计研究院有限公司 | Structure using hydropower station pressure pipeline construction branch tunnel as maintenance channel and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101614125B (en) | Construction method of V-level surrounding rock tunnel | |
| JP2022500579A (en) | Support structure of two-stage high-speed closed tunnel with reverse arch and its construction method | |
| CN104389628B (en) | Landslide location tunnel reinforcement device and reinforced construction method | |
| CN105840207B (en) | Construction method for comprehensive tunnel entering structure of large-span tunnel penetrating shallow-buried bias-pressure loose accumulation body | |
| CN103306687B (en) | Soft rock tunnel long cantilever horizontal jet grouting Deformation control construction method | |
| CN112431599B (en) | Tunnel excavation method for upper soft and lower hard stratum | |
| CN103628894B (en) | Method is repaiied in a kind of rich water fault belt based on angle umbrella pre-grouting lane, tunnel of collapsing | |
| RU2581587C1 (en) | Method of filling hole under anchor, drilled in roof of mine working cartridges with resin | |
| CN104818991A (en) | Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure | |
| CN105804767B (en) | A kind of the surrounding rock supporting construction method and surrounding rock supporting structure in the aqueous tunnel of coal mine | |
| CN103485808B (en) | Electro-osmosis home position modified roadway anchoring method of underground swelling soft rock | |
| CN102660955B (en) | Quick construction method for foundation pit slope support | |
| CN202117686U (en) | Surrounding rock advanced support structure for railway tunnel at deep-buried watery and weak stratums | |
| CN103758123A (en) | Method for constructing protecting wall lining of cast-in-place manual hole digging pile | |
| CN105178326A (en) | Water stop method for upper-soft and lower-hard water-rich stratum foundation pit engineering retaining structure | |
| CN102278130A (en) | Process method for reinforcing and grouting of high-pressure water-rich solution cavity of tunnel | |
| CN107965341A (en) | A kind of large-section underground pipe canopy pipe network concrete support method | |
| CN105178979A (en) | Supporting structure of tunnel in bias salt cavity environment and construction method of supporting structure | |
| CN104632249A (en) | Tunnel system supporting technology used in loose and soft broken surrounding rock | |
| CN104234726A (en) | Internal dewatering and drainage construction method for tunnel passing through water-rich unconformable contact zone | |
| CN110284885A (en) | Shield inspection-pit construction method | |
| JP7292772B2 (en) | External expansion pipe construction method for drilling in the mining zone | |
| CN103572764A (en) | Watertight structure for retaining wall of ultra-deep manually excavated pile and construction method thereof | |
| CN111140248A (en) | Bias tunnel structure applying prestress to pilot tunnel and construction method thereof | |
| CN104863613B (en) | Rocky stratum tunneling underground structure flash joist anchor draws just branch structure and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
|
| RJ01 | Rejection of invention patent application after publication |