CN109026146A - The high outer depth of water buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting - Google Patents
The high outer depth of water buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting Download PDFInfo
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- CN109026146A CN109026146A CN201811087571.8A CN201811087571A CN109026146A CN 109026146 A CN109026146 A CN 109026146A CN 201811087571 A CN201811087571 A CN 201811087571A CN 109026146 A CN109026146 A CN 109026146A
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- Prior art keywords
- water
- draining pipe
- integrate draining
- lining cutting
- circumferential
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 230000005641 tunneling Effects 0.000 title claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 18
- 239000002356 single layer Substances 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims description 6
- 238000009738 saturating Methods 0.000 claims description 5
- 125000002619 bicyclic group Chemical group 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003276 anti-hypertensive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses the tunneling boring drainage and step-down structures that a kind of high outer depth of water buries water-conveyance tunnel lining cutting, radial drainpipe is provided at the top of the above lining cutting of water surface curve in water-conveyance tunnel hole, in the water surface circumferential single layer drainage belt arranged below, circumferential single layer drainage belt end connects circumferential double-layer drainage band and extends to the water surface or more, circumferential single layer drainage belt and circumferential double-layer drainage band are arranged between tunnel once supporting and lining cutting, " Ω " type integrate draining pipe is buried in the axial direction in lining cutting outer rim, the multiple radial integrate draining pipes communicated with tunnel inboard are provided with along " Ω " type integrate draining length of tube direction, " Ω " type integrate draining pipe and radial integrate draining pipe height are appeared interior water surface curve, it fixes and protrudes into " Ω " type integrate draining pipe using holdfast with axis direction " Ω " type integrate draining pipe at the top of circumferential double-layer drainage band, water is arranged by " Ω " type collection Water pipe and radial integrate draining pipe are discharged into hole.It solves the problems, such as that the outer water tunnel lining structural base external water pressure of height is difficult to be effectively reduced, improves liner structure entirety stress condition, improve the safety of liner structure.
Description
Technical field
The present invention relates to a kind of discharge structure of hydraulic tunnel, especially a kind of high outer depth of water buries the complete of water-conveyance tunnel lining cutting
Section drainage and step-down structure.
Background technique
The high outer water problems of deep-lying tunnel is the difficulties of tunnel secondary lining design, and especially outer water ballast(ing) is more than 150m
High pressure water hole section, external water pressure be control tunnel lining figure, arrangement of reinforcement even Grouting Design governing factor.To reduce lining cutting
Radial drainpipe is arranged, by the top girth rock of guide hole in outer high external water pressure usually at the top of the lining cutting in a certain range
Crevice water, pore water reduce external water pressure on lining, but the following limitations exist for this drainage and step-down measure:
1. drainpipe, which is only capable of being laid in, operates normally water level or more, drainage and step-down effect to prevent endochronic model in hole
Only play a role in lining cutting upper area.
2. drain pipe diameter should not be too large, single drainpipe drainability is limited, for recharge of ground water abundance hole section,
The drainage and step-down effect of drainpipe is limited.
3. though the drainage and step-down ability of drainage system can be improved using encryption drainpipe, increasing drainpipe depth, it cannot
Effectively expand drainage and step-down range, while also easily leading to because underground water is lost the ecological problem caused.
4. only laying drainpipe for feeding abundant stratum at top and easily leading to external water pressure on lining in " up-small and down-big " no
It is uniformly distributed, causes lining cutting unbalance stress, carry out risk to lining cutting safety belt, or even be not able to satisfy bearing requirements.
According to the above analysis, high outer water sufficient for the recharge of ground water, pressure-bearing water hole section, due to country rock infiltration coefficient
Greatly, corresponding external water pressure on lining reduction coefficient is also very big, and drainpipe is only laid at the top of lining cutting to lining cutting bottom external water pressure
Antihypertensive effect is unobvious, cannot reach the target for uniformly reducing the outer hydraulic pressure of lining cutting, and lining cutting is caused to bear uneven outer hydraulic pressure
Power, be unfavorable for liner structure stablizes safe operation.
Summary of the invention
The technical problem to be solved by the invention is to provide the tunneling boring drainings that a kind of high outer depth of water buries water-conveyance tunnel lining cutting
Buck configuration can effectively evenly reduce the high external water pressure on the outside of lining cutting.
To solve the above-mentioned problems, the technical scheme adopted by the invention is that: a kind of high outer depth of water buries water-conveyance tunnel lining cutting
Tunneling boring drainage and step-down structure, radial drainpipe is provided at the top of the above lining cutting of water surface curve in water-conveyance tunnel hole, in the water surface
Circumferential direction single layer drainage belt arranged below, circumferential single layer drainage belt end connect circumferential double-layer drainage band and extend to the water surface or more,
Circumferential single layer drainage belt and circumferential double-layer drainage band are arranged between tunnel once supporting and lining cutting, in lining cutting outer rim along axis side
To embedded " Ω " type integrate draining pipe, " Ω " type integrate draining length of tube direction is provided with the multiple radial directions communicated with tunnel inboard
Integrate draining pipe, " Ω " type integrate draining pipe and radial integrate draining pipe height are appeared interior water surface curve, at the top of circumferential double-layer drainage band and axis
Direction " Ω " type integrate draining pipe is fixed and is protruded into " Ω " type integrate draining pipe using holdfast, by water by " Ω " type integrate draining pipe and
Radial integrate draining pipe is discharged into hole.
The saturating drainpipe of radial capillary passes through tunnel lining and gos deep into country rock certain depth outside hole, in hole axis side's standing root
According to setting array pitch according to rectangle or quincuncial arrangement.
The permeable side of the circumferential direction double-layer drainage band is positioned opposite, and gap is filled out using cement mortar between top and once supporting
Plug, the waterproof side in lower part is close to once supporting, bicyclic to go deep into length in " Ω " type integrate draining pipe to double-layer drainage band and be not less than
2cm；It is close to once supporting arrangement in the permeable side of circumferential single layer drainage belt.
Distribution of " Ω " the type integrate draining pipe on hole axis direction is set according to the width and array pitch of circle draining band,
It is attached between " Ω " type integrate draining pipe using hollow circular drainpipe and PVC connector, axis direction drainpipe total length
A section parting situation adjustment is poured according to lining cutting.
Beneficial effects of the present invention: solve that the outer water tunnel lining structural base external water pressure of height is difficult to be effectively reduced asks
Topic avoids the case where liner structure bears the effect of uneven external water pressure, improves liner structure entirety stress condition, improves
The safety of liner structure makes tunnel lining structure can adapt to the outer water ballast(ing) condition of height of 150m or more.The present invention has
It makes, the characteristic being mounted directly in hole, constructs fast and convenient in batch outside hole；The present invention is formed using capillary force and siphon power simultaneously
Negative pressure Active Drainage, drainage channel is not easy to plug, high reliablity good to different lithology ground adaptability.
Detailed description of the invention
Fig. 1 is the tunneling boring drainage and step-down structural schematic diagram that the outer depth of water of height used in the present invention buries tunnel lining.
Fig. 2 is enlarged drawing at the A of Fig. 1.
Fig. 3 is the structural schematic diagram of B-B section expansion.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description:
As shown in Figure 1, the outer depth of water of height of the invention buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting, in water delivery tunnel
It is provided with radial drainpipe 1 at the top of the above lining cutting of water surface curve in the hole of hole, it is circumferential in the water surface circumferential single layer drainage belt 3 arranged below
3 end of single layer drainage belt connects circumferential double-layer drainage band 2 and extends to the water surface or more, and circumferential single layer drainage belt 3 and circumferential direction are double-deck
Drainage belt 2 is arranged between tunnel once supporting 4 and lining cutting 5, buries " Ω " type integrate draining pipe in the axial direction in 5 outer rim of lining cutting
6, the multiple radial integrate draining pipes 7 communicated with tunnel inboard, " Ω " type collection are provided with along 6 length direction of " Ω " type integrate draining pipe
Drainpipe 6 and radial 7 height of integrate draining pipe are appeared interior water surface curve, and circumferential 2 top of double-layer drainage band is arranged with axis direction " Ω " type collection
Water pipe 6 is fixed using holdfast 8 and protrudes into " Ω " type integrate draining pipe 6, and water is passed through " Ω " type integrate draining pipe 6 and radial integrate draining
Pipe 7 is discharged into hole.The siphonage of pressure difference and capillary penetrating pipe outside lining cutting in high external water pressure and lining cutting between integrate draining pipe promotes
Hydraulic communication in lining cutting in integrate draining channel.The tunneling boring discharge structure being made of capillary penetrating drainage pipe and capillary penetrating drainage band
External water pressure on lining effectively can be uniformly reduced, improves liner structure entirety stress condition, improves the stability of liner structure.
The saturating drainpipe 1 of radial capillary passes through tunnel lining 5 and gos deep into country rock certain depth outside hole, on hole axis direction
According to setting array pitch according to rectangle or quincuncial arrangement.Capillary penetrating drainage pipe by going deep into country rock drops outside row's tunnel top lining cutting
External water pressure.
As shown in Fig. 2, the permeable side of the circumferential direction double-layer drainage band 2 is positioned opposite, gap is adopted between top and once supporting 4
It is clogged with cement mortar 9, the waterproof side in lower part is close to once supporting 4, prevents from blocking circumferential drainage belt when lining cutting rockfill grouting
Drainage channel.It is bicyclic to go deep into 6 length to double-layer drainage band 2 and be not less than 2cm, it is drawn out when preventing drainage belt from being interfered by construction
" Ω " type integrate draining pipe causes drainage channel unsmooth；It is close to once supporting 4 and arranges in the permeable side of circumferential single layer drainage belt 3.
As shown in figure 3, the drainage system connecting with circumferential double-layer drainage band 2 is on hole axis direction by " Ω " type collection
Drainpipe 6, hollow circular drainpipe 10, PVC connector 11, connecting bend 12, plug 13 and radial drainpipe 7 collectively constitute.
Distribution of " Ω " type integrate draining pipe 6 on hole axis direction is set according to the width and array pitch of circle draining band, " Ω " type collection row
It is attached between water pipe 6 using hollow circular drainpipe 10 and PVC connector 11, axis direction drainpipe total length is according to lining
Block pours a section parting situation adjustment.
The present invention is in the saturating drainpipe of water-conveyance tunnel water surface curve arrangement above radial capillary, in the water surface circumferential capillary arranged below
Saturating drainage belt, drainage belt are discharged into hole by the integrate draining system more than water surface.Solves the outer water tunnel lining structural base of height
External water pressure is difficult to the problem of being effectively reduced, and avoids the case where liner structure bears unfavorable uneven external water pressure, improves
Liner structure entirety stress condition, improves the safety of liner structure, tunnel lining structure is made to can adapt to 150m or more
The outer water ballast(ing) condition of height.The present invention has to be made in batch outside hole, and the characteristic being mounted directly in hole is constructed fast and convenient；Simultaneously
The negative pressure Active Drainage that the present invention is formed using capillary force and siphon power, drainage channel are not easy to plug, suitable to different lithology stratum
Answering property is good, high reliablity.
The outer depth of water of height provided by the invention buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting, for fields
For those of ordinary skill, other different forms of changes or modifications may be made based on the above description.Here without
Method is exhaustive all embodiments, all to belong to the obvious variation or change that technical solution of the present invention is amplified out
It moves within still in scope of the invention.
Claims (4)
1. the tunneling boring drainage and step-down structure that a kind of high outer depth of water buries water-conveyance tunnel lining cutting, which is characterized in that in water-conveyance tunnel hole
It is provided with radial drainpipe (1) at the top of the interior above lining cutting of water surface curve, it is circumferential in the water surface circumferential single layer drainage belt (3) arranged below
Single layer drainage belt (3) end connects circumferential double-layer drainage band (2) and extends to the water surface or more, circumferential single layer drainage belt (3) and ring
It is arranged between tunnel once supporting (4) and lining cutting (5) to double-layer drainage band (2), in lining cutting (5), outer rim is buried in the axial direction
" Ω " type integrate draining pipe (6) is provided with the multiple radial directions communicated with tunnel inboard along " Ω " type integrate draining pipe (6) length direction
Integrate draining pipe (7), " Ω " type integrate draining pipe (6) and radial integrate draining pipe (7) height are appeared interior water surface curve, circumferential double-layer drainage band
(2) top is fixed using holdfast (8) with axis direction " Ω " type integrate draining pipe (6) and protrudes into " Ω " type integrate draining pipe (6), will
Water is discharged into hole by " Ω " type integrate draining pipe (6) and radial integrate draining pipe (7).
2. the high outer depth of water buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting according to claim 1, which is characterized in that
The saturating drainpipe of radial capillary (1) passes through tunnel lining (5) and gos deep into country rock certain depth outside hole, the basis on hole axis direction
Array pitch is set according to rectangle or quincuncial arrangement.
3. the high outer depth of water buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting according to claim 1, which is characterized in that
The permeable side of the circumferential direction double-layer drainage band (2) is positioned opposite, and gap uses cement mortar (9) between top and once supporting (4)
Filling, the waterproof side in lower part are close to once supporting (4), bicyclic into double-layer drainage band (2) deeply " Ω " type integrate draining pipe (6)
Length is not less than 2cm；It is close to once supporting (4) arrangement in the permeable side of circumferential single layer drainage belt (3).
4. the high outer depth of water buries the tunneling boring drainage and step-down structure of water-conveyance tunnel lining cutting according to claim 1, which is characterized in that
Distribution of " Ω " the type integrate draining pipe (6) on hole axis direction is set according to the width and array pitch of circle draining band, " Ω "
It is attached between type integrate draining pipe (6) using hollow circular drainpipe (10) and PVC connector (11), axis direction drainpipe
Total length pours section parting situation according to lining cutting and adjusts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087571.8A CN109026146B (en) | 2018-09-18 | 2018-09-18 | Full-section drainage depressurization structure of lining of high-outer-water deep-buried water-conveying tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087571.8A CN109026146B (en) | 2018-09-18 | 2018-09-18 | Full-section drainage depressurization structure of lining of high-outer-water deep-buried water-conveying tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026146A true CN109026146A (en) | 2018-12-18 |
| CN109026146B CN109026146B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811087571.8A Active CN109026146B (en) | 2018-09-18 | 2018-09-18 | Full-section drainage depressurization structure of lining of high-outer-water deep-buried water-conveying tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115994494A (en) * | 2022-11-21 | 2023-04-21 | 长江三峡勘测研究院有限公司（武汉） | Method and system for estimating diving high external water pressure of multilayer slowly-inclined rock-soil body deep-buried tunnel |
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2018
- 2018-09-18 CN CN201811087571.8A patent/CN109026146B/en active Active
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| Publication number | Publication date |
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| CN109026146B (en) | 2023-08-22 |
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