CN104060590B - The reinforcement leakage preventing structure of a kind of pressure diversion tunnel and construction method thereof - Google Patents
The reinforcement leakage preventing structure of a kind of pressure diversion tunnel and construction method thereof Download PDFInfo
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- CN104060590B CN104060590B CN201410292565.1A CN201410292565A CN104060590B CN 104060590 B CN104060590 B CN 104060590B CN 201410292565 A CN201410292565 A CN 201410292565A CN 104060590 B CN104060590 B CN 104060590B
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- reinforcement
- impervious barrier
- grout
- concrete layer
- lining concrete
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- 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
Abstract
The present invention proposes the reinforcement leakage preventing structure of a kind of pressure diversion tunnel, including: original lining concrete layer；Reinforcement impervious barrier, is arranged on described original lining concrete layer；Grout stop, is arranged between described original lining concrete layer and described reinforcement impervious barrier, and the space between described original lining concrete layer and described reinforcement impervious barrier is divided into some grout compartments by described grout stop；Grout blanket, is filled in the described grout compartment enclosed by described original lining concrete layer, described reinforcement impervious barrier and described grout stop.The method have the benefit that the pressure diversion tunnel for relatively duck eye footpath, such as footpath, hole is in the range of 3～5m, or steel bar corrosion big again if there is wider more longitudinal crack, leakage is serious, after reinforcement antiseepage, the cross-section of river only reduces 2～3% the most less, reinforcement leakage preventing structure and construction method simple in construction thereof, step are reasonable simultaneously, safety is high, and the built pressure diversion tunnel that sets is had preferable practical value.
Description
Technical field
The present invention relates to constructing tunnel field, particularly relate to a kind of pressure diversion tunnel reinforcement leakage preventing structure and
Its construction method.
Background technology
Diversion tunnel (diversion tunnel) is the penstock excavated in massif, by current in hole with or without
Table, diversion tunnel divides without pressure and has pressure two kinds.In recent years, China has built large quantities of western water
Electrical engineering and Inter-Basin Water Transfer Project, Hydraulic and Hydro-Power Engineering its construction level has obtained large increase, a lot of technology
All in world lead level, pressure diversion tunnel at stages of design and construction to country rock situation overestimate,
Find after operation that concrete lining is typically limited by physical dimension, resists the limited in one's ability of internal water pressure, from
And cause hole inner concrete Lining cracks, seepage serious, therefore have to out of service carrying out at repairing and reinforcing
Reason, although these work may utilize the unit maintenance phase or load is carried out in little season, but owing to repairing the time
Short, a part can only be repaired, it is seen then that the repairing and reinforcing scheme of built pressure diversion tunnel is carried out in advance deeply
Enter research, be highly important to determine optimal repairing and reinforcing scheme.Pressure especially for relatively duck eye footpath
Power diversion tunnel, such as footpath, hole is in the range of 3～5m, if there is wider more longitudinal crack, leakage
Big again or steel bar corrosion is serious, now carries out reinforcement antiseepage by traditional method and can cause subtracting of the cross-section of river
Little problem.
Summary of the invention
The present invention proposes reinforcement leakage preventing structure and the construction method thereof of a kind of pressure diversion tunnel, to overcome at present
Deficiencies of the prior art.
The technical scheme is that and be achieved in that:
The reinforcement leakage preventing structure of a kind of pressure diversion tunnel, it is characterised in that including:
Original lining concrete layer；
Reinforcement impervious barrier, is arranged on described original lining concrete layer；
Grout stop, is arranged between described original lining concrete layer and described reinforcement impervious barrier, described only slurry
Space between described original lining concrete layer and described reinforcement impervious barrier is divided into some grout compartments by ring；
Grout blanket, is filled in by described original lining concrete layer, described reinforcement impervious barrier and described grout stop
In the described grout compartment enclosed.
Preferably, described reinforcement impervious barrier is interior lining panel.
Preferably, described interior lining panel is lining steel plate.
Preferably, described grout stop is steel plate strip.
Further, it is provided with sealing gasket flat bed between described grout stop and described original lining concrete layer.
Preferably, described sealing gasket flat bed is polymer cement mortar layer.
Preferably, described grout stop is fixed with described original lining concrete layer by nailing.
Further, the reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, also include:
Cushion block, is arranged between described original lining concrete layer and described reinforcement impervious barrier；
Fixing device, is connected with described reinforcement impervious barrier, described cushion block and described original lining concrete layer.
The construction method of the reinforcement leakage preventing structure of a kind of pressure diversion tunnel as above, comprises the following steps:
Grout stop is installed: by smearing sealing gasket flat bed on original lining concrete layer, then by described grout stop
It is fixed on described original lining concrete layer；
Reinforcement impervious barrier is installed: described reinforcement impervious barrier is placed in the middle of grout stop described in twice, uses
Described reinforcement impervious barrier is fixed on described original lining concrete layer by fixing device, respectively by described fixing
Device seals welding with reinforcement impervious barrier described in described reinforcement impervious barrier and adjacent two；
Grout pipe and exhaustor are installed: arrange described on the described reinforcement impervious barrier of tunnel floor and both sides thereof
Grout pipe, arranges described exhaustor on the described reinforcement impervious barrier at described tunnel top；
Grouting: start grouting, the described grout pipe closed on to tunnel both sides from grout pipe described in tunnel floor
Close grout pipe described in tunnel floor when having thick paste to flow out, then move to described grouting adjacent on tunnel both sides
Pipe continues grouting, repeats aforesaid operations, until exhaustor described in tunnel top flows out thick paste, is then presetting
Maintain pressure to discharge excessive moisture and bubble in time period.
Further, the construction method of the reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, in institute
After stating installation grout stop and before installation reinforcement impervious barrier, further comprising the steps of:
Prepare reinforcement impervious barrier: on described reinforcement impervious barrier, cushion block is set, described cushion block gets out for
The hole of fixing described reinforcement impervious barrier；
Wherein, when installing described reinforcement impervious barrier, the described original lining concrete layer at described hole
Upper boring, and by described fixing device, described reinforcement impervious barrier is fixed on described original lining concrete layer.
The invention have the benefit that
The reinforcement leakage preventing structure of pressure diversion tunnel of the present invention and construction method thereof, for relatively duck eye footpath
Pressure diversion tunnel, such as footpath, hole is in the range of 3～5m, if there is wider more longitudinal crack, oozes
Leakage quantity is big again or steel bar corrosion is serious etc., and after reinforcement antiseepage, only to reduce 2～3% even less, simultaneously for the cross-section of river
Rationally, safety is high, draws the built pressure that sets for reinforcement leakage preventing structure and construction method simple in construction, step
Water tunnel has preferable practical value.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the reinforcement leakage preventing structure of a kind of pressure diversion tunnel of the present invention；
Fig. 2 is the knot during grouting of the construction method of the reinforcement leakage preventing structure of a kind of pressure diversion tunnel of the present invention
Structure schematic diagram；
Fig. 3 is the partial structurtes schematic diagram of the reinforcement leakage preventing structure of a kind of pressure diversion tunnel of the present invention.
In figure:
1, original lining concrete layer；2, reinforcement impervious barrier；3, grout stop；4, grout blanket；5, seal
Level up layer；6, cushion block；7, fixing device；8, grout pipe；9, the hole of slurry is accommodated；10, rubber
Pad；11, steel washer；12, nut.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
As Figure 1-3, the reinforcement leakage preventing structure of a kind of pressure diversion tunnel of the present invention, including:
Original lining concrete layer 1；
Reinforcement impervious barrier 2, is arranged on original lining concrete layer 1；
Grout stop 3, is arranged between original lining concrete layer 1 and reinforcement impervious barrier 2, and grout stop 3 is by former
Space between beginning lining concrete layer 1 and reinforcement impervious barrier 2 is divided into some grout compartments；
Grout blanket 4, be filled in enclosed by original lining concrete layer 1, reinforcement impervious barrier 2 and grout stop 3 and
In the grout compartment become.
Wherein, fill closely knit with grout blanket 4 between original lining concrete layer 1 and reinforcement impervious barrier 2, main
Play the effect of transmission load.
The reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, for the pressure diversion tunnel in relatively duck eye footpath
Hole, such as footpath, hole is in the range of 3～5m, the big again or steel if there is wider more longitudinal crack, leakage
Muscle corrosion is serious, if reinforcement impervious barrier 2 thickness is less than 10mm, grout blanket 4 thickness about 10mm,
After reinforcement antiseepage, the cross-section of river only reduces 2～3% even less, reinforcement leakage preventing structure simple in construction, step simultaneously
Rationally, safety is high, can cause with inside lining xoncrete structure compared with flow section reduction, set pressure to built
Power diversion tunnel has preferable practical value.
Wherein it is preferred to, described reinforcement impervious barrier 2 is interior lining panel.
Wherein it is preferred to, described interior lining panel is lining steel plate.Lining steel plate be specifically as follows low carbon steel plate or
Low alloy steel plate etc..Certainly, interior lining panel can also be the metallic plate of other kind.
Wherein it is preferred to, described grout stop 3 is steel plate strip.Grout stop 3 is specifically as follows mild steel lath
Or low-alloy steel lath etc..
The reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, grout stop 3 and original lining concrete
Sealing gasket flat bed 5 can be provided with between layer 1.Arrange close between grout stop 3 and original lining concrete layer 1
Packing flat bed 5, can avoid original lining concrete layer 1 surface irregularity so that each grout compartment seals not
Grout blanket 4 leakiness that is good, that formed after grout filling.
Wherein it is preferred to, described sealing gasket flat bed 5 is polymer cement mortar layer.
Wherein it is preferred to, described grout stop 3 is fixed with original lining concrete layer 1 by nailing.
Further, the reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, it is also possible to including:
Cushion block 6, is arranged between original lining concrete layer 1 and reinforcement impervious barrier 2；
Fixing device 7, is connected with reinforcement impervious barrier 2, cushion block 6 and original lining concrete layer 1.
Wherein, cushion block 6 can be steel cushion block or cement mortar precast block, cushion block 6 in arranging in length and breadth, and in
Plum blossom-shaped is arranged, can stick with glue on steel plate；Fixing device 7 is specifically as follows expansion bolt or anchor pole.
It addition, the reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, it is also possible to including:
Accommodate the hole 9 of slurry, be opened on the original lining concrete layer 1 that each grout compartment is corresponding, be used for
Make pulp flow smooth and easy during grouting, use hole 9 ratio accommodating slurry that groove is set and be more conducive to the smooth and easy stream of slurry
Dynamic, and make slurry more uniform when filling grout compartment.
Present invention also offers the construction method of the reinforcement leakage preventing structure of a kind of above-mentioned pressure diversion tunnel, bag
Include following steps:
Grout stop 3 is installed: sealing gasket flat bed 5 will be smeared, then by grout stop on original lining concrete layer 1
3 are fixed on original lining concrete layer 1；
Reinforcement impervious barrier 2 is installed: reinforcement impervious barrier 2 is placed in the middle of twice grout stop 3, with fixing
Reinforcement impervious barrier 2 is fixed on original lining concrete layer 1 by device 7, respectively by fixing device 7 and benefit
Strong impervious barrier 2 and two adjacent reinforcement impervious barriers 2 seal welding, during welding transverse joint, should make each welding longitudinal joint
Stagger；
Grout pipe 8 and exhaustor are installed: grouting is set on the reinforcement impervious barrier 2 of tunnel floor and both sides thereof
Pipe 8, arranges exhaustor on the reinforcement impervious barrier 2 at tunnel top；
Grouting: starting grouting from tunnel floor grout pipe 8, the grout pipe 8 closed on to tunnel both sides has thick
Close tunnel floor grout pipe 8 when slurry flows out, then move to grout pipe 8 adjacent on tunnel both sides and continue grouting,
Repeat aforesaid operations, until tunnel top vent pipe flow goes out thick paste, in preset time period, then maintain pressure
To discharge excessive moisture and bubble.
Wherein, respectively by fixing device 7 and reinforcement impervious barrier 2 and two adjacent reinforcement impervious barrier 2 seal welds
Connect, specifically refer to seal fixing device 7 with reinforcement impervious barrier 2 weld, by two adjacent reinforcement impervious barriers 2
Seal welding.
The construction method of the reinforcement leakage preventing structure of pressure diversion tunnel of the present invention, is installing grout stop 3
Afterwards and install before reinforcement impervious barrier 2, it is also possible to comprise the following steps:
Prepare reinforcement impervious barrier 2: cushion block 6 is set on reinforcement impervious barrier 2, cushion block 6 gets out for solid
Determine the hole of reinforcement impervious barrier 2；
Wherein, when installing reinforcement impervious barrier 2, the original lining concrete layer 1 at hole is holed,
And by fixing device 7, reinforcement impervious barrier 2 is fixed on original lining concrete layer 1.
In order to the construction method of the reinforcement leakage preventing structure of the pressure diversion tunnel of the present invention is better described, it is provided that
Specific embodiment is as follows:
(1) hole inner surface treatment
Once damaged condition in hole and scope are made that assessment, after having formulated detailed repairing and reinforcing scheme,
Hole inner surface treatment can be set about.Ordinary circumstance, the concrete of loose concrete chip or serious cracking is broken
Removing is all should give on block and serious Corrosion Reinforcement surface that may be present etc.；Then with cement mortar or coagulation
Soil is floating；For seepage critical regions or infiltration crack, surface-closed process should be carried out in principle.Although it is interior
Lined steel plate and original lining concrete layer 1 are jointly to bear internal water pressure, but they are to divide as two components
Do not undertake the load each should bear, therefore, interface does not require higher cohesive force or shear resistance.
(2) grout stop 3 is installed
In order to each concreting section is divided into several grout compartments, between Qu Yuqu, it is provided with grout stop 3, only
Slurry ring 3 is sheet metal bar, wide 50～80mm, thick 2～3mm, the most first smear the close of one layer of about 5mm
Packing flat bed 5 is leveled up, and then fixes with nailing.
(3) lining steel plate is prepared
General lining steel plate thickness 4～6mm, such as the lining steel plate of thick 5mm, is equivalent to every meter of increase
10 Φ 25 reinforcing bars.In order to ensure there is certain thickness sky between lining steel plate and original lining concrete layer 1
Between, first at lining steel plate 50 × 50mm disposed below, the steel cushion block of thickness 10mm or cement mortar precast block,
Spacing is all at about 500mm in length and breadth, arranges in plum blossom-shaped, sticks with glue on lining steel plate.Prior each pad
The hole of Φ 20 all it is drilled with, in order to secure liner steel plate at block 6.Four limits of monoblock lining steel plate should straight nothing
Defect, in order to docking welding.
(4) lining steel plate is installed
A) ready lining steel plate is placed in the middle of twice grout stop 3, as Fig. 3 shows, both sides pair
Qi Hou, holes in prior drill hole with electric impact drill at once, and fixes with expansion bolt.
B) after monoblock lining steel plate is fixing, by grout stop 3 two pieces of docking lining steel plate firm welding above.
It practice, butt weld is the most welded together with grout stop 3.It should be pointed out that, when welding transverse joint, should make
Each longitudinal joint staggers.
C) each expansion bolt top is welded with lining steel plate sealing, or expansion bolt is taken out standby, change
Change anchor pole, after fastening nut, then seal welding.
(5) grout pipe 8 and the installation of exhaustor
Grouting purpose is the space between filling lining steel plate and original lining concrete layer 1, with water in transmission
Pressure gives original lining concrete layer 1.Grout pipe 8 is located at tunnel floor, and exhaustor is located at top, hole.Each
Grout compartment (about 1.5m width) is equipped with grout pipe 8 and exhaustor.By bottom, grout pipe 8 is two
Side is alternately disposed to controlled grouting process.Wherein, when grout pipe 8 and exhaustor are arranged on lining steel plate,
Can be fixed by nut 12, certainly, grout pipe 8 and exhaustor are provided with the spiral shell matched with nut 12
Stricture of vagina, between nut 12 and lining steel plate, it is also possible to arrange rubber blanket 10 and steel washer 11, to prevent slurry
Expect to flow out from the gap between grout pipe 8 and exhaustor, increase sealing and the fastness of connection.
(6) grouting
Being gradually increased grouting pressure in work process is common usual practice.It is close for space is sufficient filling with
Real, filling process should beat lining steel plate in grouting limit, limit.When pulp flow is smooth and easy, it is used for promoting slurry
The power that the pressure in material entrance space acts on lining steel plate is not too large.If but mobility weakens or stops
And the pressure applied remains in that, then a pressure suitable with grouting pressure can be produced on lining steel plate,
So it is likely to cause lining steel plate and deforms excessive or buckling instability.So, research in advance causes lining steel plate
The critical pressure of pressure unstability is critically important, uses and is arranged on the valve of key position and Pressure gauge for controlling
Constant pressure processed is effective measures.
Grouting construction, by the grout pipe 8 bottom hole, continues to irrigate lentamente, until closing on above both sides
Grout pipe 8 when having thick paste to flow out till.Now bottom grout pipe 8 is closed, move to above both sides adjacent
Grout pipe 8 simultaneously continue grouting.Repeat above-mentioned operation, until top vent pipe goes out thick paste, maintain pressure
Power a period of time is to discharge excessive moisture and bubble.It should be noted that in filling process, have special messenger's wood
Mallet taps lining steel plate equably, and its purpose one is to check that grouting is the most closely knit, and two is to assist bubble and isolation
Water is discharged.
(7) inspection after grouting
Because grout blanket 4 is used to transmit internal water pressure, therefore grouting effect is detected and assessment is
Critically important, there are two kinds of methods to be often used in the compaction rate of assessment grouting: one is ultrasonic pulse test；
Two is to judge whether closely knit with artificial percussion according to the difference of sound.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (8)
1. the reinforcement leakage preventing structure of a pressure diversion tunnel, it is characterised in that including:
Original lining concrete layer (1)；
Reinforcement impervious barrier (2), is arranged on described original lining concrete layer (1)；
Grout stop (3), is arranged at described original lining concrete layer (1) and described reinforcement impervious barrier (2)
Between, described grout stop (3) is by described original lining concrete layer (1) and described reinforcement impervious barrier (2)
Between space be divided into some grout compartments；
Grout blanket (4), is filled in by described original lining concrete layer (1), described reinforcement impervious barrier (2)
In the described grout compartment enclosed with described grout stop (3)；
It is provided with sealing gasket flat bed (5) between described grout stop (3) and described original lining concrete layer (1)；
Described grout stop (3) is steel plate strip.
The reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 1, it is characterised in that institute
Stating reinforcement impervious barrier (2) is interior lining panel.
The reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 2, it is characterised in that institute
Stating interior lining panel is lining steel plate.
The reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 1, it is characterised in that institute
Stating sealing gasket flat bed (5) is polymer cement mortar layer.
The reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 1, it is characterised in that institute
State grout stop (3) to be fixed with described original lining concrete layer (1) by nailing.
The reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 1, it is characterised in that also
Including:
Cushion block (6), be arranged at described original lining concrete layer (1) and described reinforcement impervious barrier (2) it
Between；
Fixing device (7), mixed with described reinforcement impervious barrier (2), described cushion block (6) and described original lining cutting
Solidifying soil layer (1) connects.
7. a construction method for the reinforcement leakage preventing structure of pressure diversion tunnel as claimed in claim 1, its
It is characterised by, comprises the following steps:
Grout stop (3) is installed: sealing gasket flat bed (5) will be smeared on original lining concrete layer (1), then
Described grout stop (3) is fixed on described original lining concrete layer (1)；
Reinforcement impervious barrier (2) is installed: described reinforcement impervious barrier (2) is placed in grout stop described in twice (3)
Middle, by fixing device (7), described reinforcement impervious barrier (2) is fixed on described original lining cutting coagulation
On soil layer (1), respectively by described fixing device (7) and described reinforcement impervious barrier (2) and adjacent two institutes
State reinforcement impervious barrier (2) and seal welding；
Grout pipe (8) and exhaustor are installed: tunnel floor and the described reinforcement impervious barrier (2) of both sides thereof
On described grout pipe (8) is set, the described reinforcement impervious barrier (2) at described tunnel top arranges described row
Trachea；
Grouting: start grouting, the described filling closed on to tunnel both sides from grout pipe described in tunnel floor (8)
Close grout pipe (8) described in tunnel floor when slurry pipe (8) has thick paste to flow out, then move to phase on tunnel both sides
Adjacent described grout pipe (8) continues grouting, repeats aforesaid operations, until exhaustor described in tunnel top flows out
Thick paste, then maintains pressure to discharge excessive moisture and bubble in preset time period.
The construction method of the reinforcement leakage preventing structure of pressure diversion tunnel the most according to claim 7, it is special
Levy and be, after described installation grout stop (3) and before installation reinforcement impervious barrier (2), also include
Following steps:
Prepare reinforcement impervious barrier (2): on described reinforcement impervious barrier (2), cushion block (6) is set, at described pad
The hole for fixing described reinforcement impervious barrier (2) is got out on block (6)；
Wherein, when installing described reinforcement impervious barrier (2), the described original lining cutting coagulation at described hole
The upper boring of soil layer (1), and described reinforcement impervious barrier (2) is fixed on described by described fixing device (7)
On original lining concrete layer (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410292565.1A CN104060590B (en) | 2014-06-27 | 2014-06-27 | The reinforcement leakage preventing structure of a kind of pressure diversion tunnel and construction method thereof |
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| CN201410292565.1A CN104060590B (en) | 2014-06-27 | 2014-06-27 | The reinforcement leakage preventing structure of a kind of pressure diversion tunnel and construction method thereof |
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| CN104060590B true CN104060590B (en) | 2017-01-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019919B (en) * | 2015-07-15 | 2017-05-31 | 北京市水利规划设计研究院 | Tunnel and its construction method for transmitting fluid |
| CN106320296A (en) * | 2016-11-02 | 2017-01-11 | 广西大学 | Basalt fiber grid reinforced lining structure for high ground temperature high-pressure hydraulic tunnel |
| CN108035736A (en) * | 2017-12-05 | 2018-05-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of quick method and structure for solving tunnel and collapsing |
| CN108457667A (en) * | 2018-03-07 | 2018-08-28 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of self-compacting concrete pipe-plate lining structure and its construction method |
| CN115573309A (en) * | 2022-09-21 | 2023-01-06 | 广东省水利电力勘测设计研究院有限公司 | Protection framework for improving safety performance of diversion tunnel structure |
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