CN108194096A - Foundation base type is without inverted arch type tunnel lining structure and its drainage system - Google Patents
Foundation base type is without inverted arch type tunnel lining structure and its drainage system Download PDFInfo
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- CN108194096A CN108194096A CN201711438444.3A CN201711438444A CN108194096A CN 108194096 A CN108194096 A CN 108194096A CN 201711438444 A CN201711438444 A CN 201711438444A CN 108194096 A CN108194096 A CN 108194096A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000011435 rock Substances 0.000 claims description 22
- 238000010079 rubber tapping Methods 0.000 claims description 21
- 238000009412 basement excavation Methods 0.000 claims description 18
- 239000011378 shotcrete Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 239000004746 geotextile Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 11
- 238000005336 cracking Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007667 floating Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 21
- 239000010410 layer Substances 0.000 description 13
- 239000003673 groundwater Substances 0.000 description 7
- 239000004567 concrete Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001932 seasonal effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000004571 lime Substances 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
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- 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
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Foundation base type is without inverted arch type liner structure and its drainage system, reduce and even eliminate effect of the underground water to tunnel-liner bottom structure, effectively solve the problems, such as karst or the regional tunnel inverted arch floating deformation of underground water development or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation.Including arch wall preliminary bracing structure, arch wall secondary liner structure and arch wall range waterproof layer and drainage system.The longeron that the arch wall secondary liner structure both sides abutment wall bottom setting consolidates therewith, bearing structure of the longeron as arch wall secondary lining.Side rail inner sets lateral sulcus, is tunnel bottom structure between the lateral sulcus of both sides.The drainage system includes arch wall range drainage system and tunnel bottom drainage system, and arch wall range drainage system and tunnel bottom drainage system are connected with lateral sulcus.
Description
Technical field
The present invention relates to tunnel-liners and drainage system to construct, and more particularly to one kind applies to underground water development location or ground
Lower water by the irregular location of seasonal effect or karst area, and tunnel bottom for weak~severely-weathered hard rock tunnel lining structure and its
Waterproof and water drainage system constructs.
Background technology
Come into 21st century, railway construction in China high speed development, speed per hour 200km more than high standard double track railways are built
It is more and more.Especially in Southwest Mountainous Areas, on the one hand, since lime rock stratum is widely distributed；On the other hand, to high-speed railway, line
Road show line is restricted by many factors such as big, the topographic and geologic complicated conditions of sweep, leads to Karst Tunnel scale (quantity and length
Degree) it increases sharply.Since karst and karst water development have the characteristics that complexity, diversity and irregularities, karst tunnel of growing up
It is higher and higher that risk particularly operations risks are built in road.
In recent years, suitable ten thousand, had occurred during Shanghai elder brother, the expensive Railway Tunnels operation such as wide several ballastless track beds deformations,
The water damages event such as inverted arch and filling protuberance, causes Railway Design, construction, construction and the great attention for runing each side.Through investigating,
Both wired water damage was broadly divided into two classes：
(1) inverted arch filling, which is floated, deforms.The construction joint that the construction in layer of its performance predominantly tunnel bottom structure is brought is in hydraulic pressure
Deformation, expansion under effect.
1. code requirement inverted arch should be separated with inverted arch filling and be poured.This engineering method forms construction joint between inverted arch and filling,
But underground water penetrates into inverted arch by inverted arch circular construction joint and fills bottom, and about 3~4m heads can cause filling to be floated.
2. in practice of construction, to prevent railway roadbed construction surface from being destroyed by Construction traffic, inverted arch filling often uses placement layer by layer
Mode, inverted arch filling surface layer (or regulating course) thickness about 0.2~0.4m of placing before railway roadbed construction, it is only necessary to 0.5~1m
High head can cause to fill surface layer floating, and then railway roadbed is caused to deform.
3. for ballastless track bed to road bed board and inverted arch fill surface using the connectionless way of contact, there are construction interfaces, right
It is more notable in the sensibility of tunnel bottom infiltration, often also there is " gap " lifting phenomenon and wear phenomenon, under the action of water, disease
Evil feature is particularly evident.Its stiffness difference huge with tunnel structure, deformation and track structure are very poor to foundation deformation
Adaptability be further exacerbated by adverse effect and difficulty of governance of the tunnel bottom water damage to operation security.
(2) liner structure is mainly inverted arch strain cracking.
1. limited by vertical, the circumferential blind pipe and abutment wall drain hole drainability that are set in tunnel, after work drainage system by
Physical (silt, fine grained deposition are silted up), chemical type block (soluble matter is precipitated, concrete and slurry reaction residue condense)
Etc. reasons will all cause impeded drainage, hydraulic pressure change dramatically leads to liner structure cracking failure.
2. the structures such as abutment wall longitudinal direction construction joint, circular construction joint, inverted arch bottom and waterproof weak link recurring structure deformation,
Cracking and waterproof failure；There is water spray, gushes silt etc. in local location.
3. level of ground water seasonal fluctuations cause lining cutting to bear " dynamic load " influence.In continuous rainfall or Severe rainstorm weather
Under the conditions of, level of ground water increases suddenly, and lining cutting bears higher hydraulic pressure.
The tunnel designed at present is largely to there is inverted arch lining cutting.By taking one-tunnel two-tracks tunnel as an example, drainage system is with " tunnel
Internal draining " is Main Patterns, and underground water discharge path is：Country rock → preliminary bracing → draining blind pipe → lateral sulcus → transverse drainage
Pipe → Central drain, the i.e. water on tunnel structure periphery are permeated by preliminary bracing enters tunnel structure sheet via draining blind pipe ejectment
Central drain within body, it is final to discharge outside hole.
Drainage system in tunnel body main drawback is that：
It is arranged on inside lining cutting agent structure 1. the pressure release point for having pressure underground water is respectively positioned on, lining cutting agent structure is caused to bear
Hydrostatic pressing or hydrodynamic range are larger.
2. Central drain (or lateral sulcus) is within tunnel structure, the periphery underground water of main ejectment arch wall range, tunnel
Ponding below inverted arch can not effective ejectment, once under continuous rainfall or rainstorm weather, under Local topography inverted arch crevice water or
Pipeline water because can not ejectment in time hydraulic pressure is caused drastically to increase.Under the effect of high hydraulic pressure, cause tunnel bottom inverted arch cracking failure.
3. tunnel is in underground water seasonal fluctuation zone etc. and the close region of extraneous hydraulic connection, in continuous rainfall or heavy rain
It under weather, because of groundwater run off abruptly increase, is limited by abutment wall sluicing pore size and spacing, it is difficult in time by its ejectment to tunnel structure body
In interior gutter, drastically increased so as to cause level of ground water.Under the effect of high hydraulic pressure, Lining cracks is caused to destroy.
4. being needed by ballast bed structure, hole auxiliary structures and tunnel cross-section engineering economy being restricted, consider that construction is difficult
The cross-section of river degree of freedom of easy degree, hole medial sulcus or Central drain is little, and discharge capacity is limited, and often causes water damage in hole.
5. since tunnel bottom is arc-shaped, excavate that control is more difficult, and it is big that tunnel bottom void slag cleans out difficulty completely, during operation
Due to tunnel bottom underground water can not ejectment, Train induced load repeated action in addition easily causes tunnel bottom the disasters such as to rise soil.
Therefore, optimize liner structure and drainage system, ensure that draining is unobstructed, reduce and even eliminate tunnel bottom hydraulic pressure, become drop
Low underground water development location, underground water are ensured operation peace by the irregular location of seasonal effect and karst area tunnel water damage risk
It is complete there is an urgent need to.
Invention content
The technical problems to be solved by the invention are to provide a kind of foundation base type without inverted arch type liner structure and its draining
System by being transformed to conventional tunnel lining cutting tunnel bottom structure form, changes tunnel bottom structure stress form and drainage system, subtracts
Effect small or even that elimination underground water is to tunnel-liner bottom structure effectively solves karst or the regional tunnel inverted arch of underground water development
The problem of floating deformation or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation.
The technical solution adopted by the present invention to solve the technical problems is as follows：
The foundation base type of the present invention is without tunnel bottom structure arch lining cutting and its drainage system, including arch wall preliminary bracing knot
Structure, arch wall secondary liner structure and arch wall range waterproof layer and drainage system, it is characterized in that：The arch wall secondary lining knot
The longeron that the setting of structure both sides abutment wall bottom consolidates therewith, bearing structure of the longeron as arch wall secondary lining；Side rail inner is set
Lateral sulcus is tunnel bottom structure between the lateral sulcus of both sides；The drainage system includes arch wall range drainage system and tunnel bottom draining system
System, arch wall range drainage system and tunnel bottom drainage system are connected with lateral sulcus.
The tunnel bottom structure is tunnel base rock；Tunnel bottom drainage system includes laying along tunnel excavation direction interval
In tunnel bottom tapping pipe of the lateral sulcus in the furrow bank of tunnel base rock side, tunnel base rock is seeped water in ejectment to lateral sulcus.
The tunnel bottom structure is bottom plate；Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain and tunnel bottom tapping pipe,
Tunnel bottom longitudinal direction french drain is arranged in below bottom plate and leans at lateral sulcus, to collect simultaneously drainage tunnel bottom underground water；The tunnel bottom tapping pipe tunnel
It excavates direction interval to be laid in lateral sulcus furrow bank, tunnel bottom longitudinal direction french drain is stretched into one end, and the other end is introduced in lateral sulcus, with ejectment tunnel bottom
Longitudinal french drain charge for remittance.
The tunnel bottom structure is to fill in the graded broken stone base in the excavation face of tunnel bottom；The tunnel bottom drainage system packet
Tunnel bottom longitudinal direction french drain and tunnel bottom tapping pipe are included, tunnel bottom longitudinal direction french drain is arranged in both sides below graded broken stone base and leans at lateral sulcus, with
Collect simultaneously drainage tunnel bottom underground water；Tunnel bottom tapping pipe is laid in along tunnel excavation direction interval in lateral sulcus furrow bank, and one end is stretched
Enter tunnel bottom longitudinal direction french drain.
The beneficial effects are mainly as follows following aspects：
1st, traditional inverted arch structure is cancelled at tunnel bottom, excavates operation and is more convenient, overcomes traditional lining types inverted arch foundation excavation
The problems such as curvature is difficult to control.The liner structure that traditional tunnel bottom is inverted arch form is compared to, construction material is saved, effectively reduces
Engineering construction investment；
2nd, traditional inverted arch structure is cancelled at tunnel bottom, is not required to apply Concrete Filled body thereon, effectively prevents traditional bent wall band
Inverted arch lining cutting destroys obturator since underground water enters to squeeze between inverted arch and inverted arch blind by inverted arch construction joint, leads to rail
Road structure is destroyed；
3rd, bearing structure of the setting longeron in tunnel bottom both sides as arch wall secondary lining, locally lies in tunnel side wall bottom soft
Weak country rock location can effectively control arch wall supporting construction sedimentation and deformation, and certain size range can be effectively crossed over to karst area tunnel
Karst Features (molten chamber, filling solution cavity, corroded breaking zone etc.)；
4th, bright ditch is set in graded broken stone base both ends at tunnel bottom, please becomes silted up convenient for being safeguarded during operation, bottom of trench is located at tunnel
Level of ground water hereinafter, can tunnel bottom structure be down to hereinafter, preventing the big vast season underground water of rain to Sui Di roads by bottom structure absolute altitude
Bed structure damages.It can cancel in conventional tunnel design in the drain cavern of underground water development location setting, average every kilometer of tunnel
Road engineering can save project cost more than 10,000,000；
5th, the drainage system in the present invention is compared to traditional double -coil output liner structure drainage system, and reliability is more
Height, drainability is stronger, can effectively drainage arch wall range and tunnel bottom underground water, effectively evade traditional liner structure because underground water is arranged
Letting out not smooth or heavy rain season groundwater run off abruptly increase leads to lining side wall and tunnel bottom structure cracking destruction.
The present invention changes tunnel bottom structure stress form and row by being transformed to conventional tunnel lining cutting tunnel bottom structure form
Water system reduces and even eliminates effect of the underground water to tunnel-liner bottom structure, effectively solves karst or underground water developmentally
The problem of inverted arch floating deformation of area tunnel or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation.
Description of the drawings
This specification includes following seven width attached drawing：
Fig. 1 is cross-section diagram of the foundation base type of the present invention without inverted arch type tunnel lining structure and its drainage system embodiment 1；
Fig. 2 is the sectional view of the line B-B along Fig. 1；
Fig. 3 is the enlarged drawing of A parts in Fig. 1, Fig. 4 and Fig. 5；
Fig. 4 is cross-section diagram of the foundation base type of the present invention without inverted arch type tunnel lining structure and its drainage system embodiment 2；
Fig. 5 is the sectional view of the line C-C along Fig. 4；
Fig. 6 is cross-section diagram of the foundation base type of the present invention without inverted arch type tunnel lining structure and its drainage system embodiment 3；
Fig. 7 is the sectional view of the line D-D along Fig. 6.
Component, toponym and corresponding label are shown in figure：Arch wall preliminary bracing structure 10, arch wall shotcrete layer
10a, arch wall steelframe 10b, arch wall system anchor bolt 10c, screed-coat 11, the second screed-coat 12, arch wall range waterproof layer 20, geotextiles
20a, splash guard 20b, circle draining blind pipe 31a, abutment wall tapping pipe 31b, tunnel bottom longitudinal direction french drain 32a, tunnel bottom tapping pipe 32b, side
Ditch 32c, arch wall secondary liner structure 40, bottom plate 41, longeron 42, graded broken stone base 43, tunnel base rock 44.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
With reference to Fig. 1, Fig. 4 and Fig. 6, foundation base type of the invention is without tunnel bottom structure arch lining cutting and its drainage system, packet
Include arch wall preliminary bracing structure 10, arch wall secondary liner structure 40 and arch wall range waterproof layer 20 and drainage system 30.It is described
The longeron 42 that the setting of 40 both sides abutment wall bottom of arch wall secondary liner structure consolidates therewith, longeron 42 is as arch wall secondary lining 40
Bearing structure, arch wall supporting construction sedimentation and deformation can effectively be controlled by locally lying in weak surrounding rock location for tunnel side wall bottom, right
Karst area tunnel, can be effectively across the Karst Features of certain size range (molten chamber, filling solution cavity, corroded breaking zone etc.).It is vertical
It is arranged between beam 42 inside setting lateral sulcus 32c, both sides lateral sulcus 32c for tunnel bottom structure, the drainage system including arch wall range
Water system and tunnel bottom drainage system, arch wall range drainage system and tunnel bottom drainage system are connected with lateral sulcus 32c.Using bright ditch just
Being safeguarded during operation please become silted up, and bottom of trench is located at tunnel bottom structural elevation hereinafter, can level of ground water be down to tunnel bottom hereinafter, preventing
Rain flood season underground water damages ballast bed structure.It can be cancelled in conventional tunnel design in underground using the liner structure form
The drain cavern of water development location setting, average every kilometer of Tunnel Engineering can save project cost more than 10,000,000, economic benefit ten
Divide notable.
With reference to Fig. 1 and Fig. 3,42 bottom of longeron usually sets screed-coat 11.The arch wall range drainage system includes
Circle draining blind pipe 31a and abutment wall tapping pipe 31b, circle draining blind pipe 31a are laid in nonwoven soil along tunnel excavation direction interval
It is introduced directly into lateral sulcus across longeron between work cloth 20a and splash guard 20b and in abutment wall lower part.The abutment wall tapping pipe 31b is along tunnel
Road excavates direction interval and is laid in longeron 42, and country rock certain length is stretched into one end, and the other end is introduced directly into lateral sulcus 32c, to dredge
Dry abutment wall range underground water and pressure release.The arch wall range waterproof layer 20, it is secondary positioned at 10 structure of arch wall preliminary bracing and arch wall
Between liner structure 40, the splash guard 20b of geotextiles 20a and outer layer including internal layer.The arch wall preliminary bracing structure 10 is wrapped
Include the arch wall shotcrete layer 10a and the arch wall system anchor bolt 10c along arch wall quincuncial arrangement of covering arch wall country rock.The arch
Arch wall steelframe 10b is laid along tunnel excavation direction interval in wall shotcrete layer 10a, is added in arch wall shotcrete layer 10a
If bar-mat reinforcement.
The embodiment 1 shown referring to Figures 1 and 2, the tunnel bottom structure be tunnel base rock 44, i.e. both sides lateral sulcus 32c
Between tunnel bottom surface be not provided with structure sheaf, tunnel base rock 44 only locally loosens excavation face on rock and removes, and use the embedding benefit of concrete
It is levelling.Tunnel bottom drainage system includes being laid in lateral sulcus 32c close to 44 1 lateral sulcus of tunnel base rock along tunnel excavation direction interval
Tunnel bottom tapping pipe 32b in wall, tunnel base rock 44 is seeped water in ejectment to lateral sulcus 32c.
Embodiment 2 with reference to shown in Fig. 4 and Fig. 5, the tunnel bottom structure are bottom plate 41, and bottom plate 41 time sets second
Screed-coat 12.Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain 32a and tunnel bottom tapping pipe 32b, tunnel bottom longitudinal direction french drain 32a cloth
Bottom set plate is leaned below 41 at lateral sulcus 32c, to collect simultaneously drainage tunnel bottom underground water.The tunnel bottom tapping pipe 32b is along tunnel excavation side
It is laid in lateral sulcus 32c furrow banks to interval, tunnel bottom longitudinal direction french drain 32a is stretched into one end, and the other end is introduced in lateral sulcus 32c, with ejectment
Tunnel bottom longitudinal direction french drain 32a charges for remittance.
Embodiment 3 with reference to shown in Fig. 6 and Fig. 7, the tunnel bottom structure are to fill in the grading in the excavation face of tunnel bottom
Crushed rock base course 43.Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain 32a and tunnel bottom tapping pipe 32b, tunnel bottom longitudinal direction french drain 32a
It is arranged in graded broken stone base both sides below 43 to lean at lateral sulcus 32c, to collect simultaneously drainage tunnel bottom underground water.Tunnel bottom tapping pipe
32b is laid in along tunnel excavation direction interval in lateral sulcus 32c furrow banks, and tunnel bottom longitudinal direction french drain 32a, other end introducing side are stretched into one end
In ditch 32c, with ejectment tunnel bottom longitudinal direction french drain 32a charges for remittance.
In embodiment 1, embodiment 2 and embodiment 3, traditional inverted arch structure is cancelled at tunnel bottom, is not required to apply concrete thereon
Obturator effectively prevents traditional bent wall band inverted arch lining cutting and is filled since underground water enters inverted arch by inverted arch construction joint with inverted arch
It is squeezed between gap and destroys obturator, track structure is caused to destroy.Tunnel bottom is excavated into plane, overcomes traditional lining types inverted arch base
Plinth excavates curvature and is difficult to control the problems such as leading, and excavates operation and is more convenient.Tunnel excavation amount can be reduced, save construction material, effectively
Reduce engineering construction investment.
The above only explains through diagrams foundation base type of the present invention without inverted arch type tunnel lining structure and its draining system
Some principles of system are not intended to the present invention being confined in shown and described concrete structure and the scope of application, therefore every institute
It is possible that the corresponding modification being utilized and equivalent, belong to the apllied the scope of the claims of the present invention.
Claims (9)
1. foundation base type is without tunnel bottom structure arch lining cutting and its drainage system, including arch wall preliminary bracing structure (10), arch wall
Secondary liner structure (40) and arch wall range waterproof layer (20) and drainage system (30), it is characterized in that：The secondary lining of arch wall
Build the longeron (42) that the setting of structure (40) both sides abutment wall bottom consolidates therewith, longeron (42) holding as arch wall secondary lining (40)
Carry structure；Lateral sulcus (32c) on the inside of longeron (42) is set, is tunnel bottom structure between both sides lateral sulcus (32c)；The drainage system
Including arch wall range drainage system and tunnel bottom drainage system, arch wall range drainage system and tunnel bottom drainage system and lateral sulcus (32c)
It is connected.
2. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its draining
System, it is characterized in that：Longeron (42) the bottom setting screed-coat (11).
3. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Arch wall range drainage system includes circle draining blind pipe (31a) and abutment wall tapping pipe (31b), and circle draining blind pipe (31a) is along tunnel
It excavates direction interval and is laid between non-woven geotextile (20a) and splash guard (20b) and directly draws across longeron in abutment wall lower part in road
Enter in lateral sulcus；The abutment wall tapping pipe (31b) is laid in along tunnel excavation direction interval in longeron (42), and country rock one is stretched into one end
Measured length, the other end are introduced directly into lateral sulcus (32c), with drainage abutment wall range underground water and pressure release.
4. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Tunnel bottom structure is tunnel base rock (44)；Tunnel bottom drainage system includes being laid in lateral sulcus along tunnel excavation direction interval
The tunnel bottom tapping pipe (32b) of (32c) in the furrow bank of tunnel base rock (44) side, by tunnel base rock (44) infiltration ejectment to lateral sulcus
In (32c).
5. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Tunnel bottom structure is bottom plate (41)；Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain (32a) and tunnel bottom tapping pipe
(32b), tunnel bottom longitudinal direction french drain (32a) arrangement bottom plate (41) are leaned at lateral sulcus (32c) below, to collect simultaneously drainage tunnel bottom underground water；
Tunnel bottom tapping pipe (32b) is laid in along tunnel excavation direction interval in lateral sulcus (32c) furrow bank, and it is longitudinally blind that tunnel bottom is stretched into one end
Ditch (32a), the other end is introduced in lateral sulcus (32c), with ejectment tunnel bottom longitudinal direction french drain (32a) charge for remittance.
6. foundation base type as claimed in claim 5 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Second screed-coat (12) is set under bottom plate (41).
7. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Tunnel bottom structure is to fill in the graded broken stone base (43) in the excavation face of tunnel bottom；Tunnel bottom drainage system is indulged including tunnel bottom
To french drain (32a) and tunnel bottom tapping pipe (32b), tunnel bottom longitudinal direction french drain (32a) is arranged in graded broken stone base (43) following both sides
At lateral sulcus (32c), to collect simultaneously drainage tunnel bottom underground water；Tunnel bottom tapping pipe (32b) is along tunnel excavation direction interval cloth
In lateral sulcus (32c) furrow bank, tunnel bottom longitudinal direction french drain (32a) is stretched into one end, and the other end is introduced in lateral sulcus (32c), with ejectment tunnel
Bottom longitudinal direction french drain (32a) charge for remittance.
8. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Arch wall range waterproof layer (20) is between arch wall preliminary bracing (10) structure and arch wall secondary liner structure (40), including internal layer
Geotextiles (20a) and outer layer splash guard (20b).
9. foundation base type as described in claim 1 is without tunnel bottom structure arch lining cutting and its drainage system, it is characterized in that：It is described
Arch wall preliminary bracing structure (10) is including covering the arch wall shotcrete layer (10a) of arch wall country rock and along arch wall quincuncial arrangement
Arch wall system anchor bolt (10c).In the arch wall shotcrete layer (10a) arch wall steelframe is laid along tunnel excavation direction interval
(10b), arch wall shotcrete layer (10a) is interior to add bar-mat reinforcement.
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| CN201711438444.3A CN108194096A (en) | 2017-12-27 | 2017-12-27 | Foundation base type is without inverted arch type tunnel lining structure and its drainage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711438444.3A CN108194096A (en) | 2017-12-27 | 2017-12-27 | Foundation base type is without inverted arch type tunnel lining structure and its drainage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590710A (en) * | 2018-06-25 | 2018-09-28 | 中南大学 | Prefabricated tunnel and construction method in a kind of underground goaf to be filled |
| CN111779498A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Tunnel structure |
Citations (8)
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| CN108590710B (en) * | 2018-06-25 | 2023-12-15 | 中南大学 | Underground goaf inner prefabricated roadway to be filled and construction method |
| CN111779498A (en) * | 2020-06-29 | 2020-10-16 | 中铁第一勘察设计院集团有限公司 | Tunnel structure |
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