CN108222963A - The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction - Google Patents
The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction Download PDFInfo
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- CN108222963A CN108222963A CN201711448665.9A CN201711448665A CN108222963A CN 108222963 A CN108222963 A CN 108222963A CN 201711448665 A CN201711448665 A CN 201711448665A CN 108222963 A CN108222963 A CN 108222963A
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000005336 cracking Methods 0.000 claims abstract description 10
- 230000006378 damage Effects 0.000 claims abstract description 10
- 238000010079 rubber tapping Methods 0.000 claims description 15
- 238000009412 basement excavation Methods 0.000 claims description 11
- 239000003673 groundwater Substances 0.000 claims description 11
- 239000004746 geotextile Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 5
- 238000007667 floating Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 13
- 239000004567 concrete Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Abstract
The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction, effect of the underground water to tunnel-liner bottom structure is even eliminated to reduce, karst or the regional tunnel inverted arch floating deformation of underground water development or tunnel bottom structure cracking destruction are effectively solved the problems, such as, to ensure the stabilization of constructing tunnel and operation and safety.For the longeron that the setting of arch wall secondary liner structure both sides abutment wall bottom consolidates therewith as its bearing structure, longeron section is not contour variable cross-section.Bottom plate is set between two side girders, and bottom plate transverse ends are connect with same side girder, and box construct is set along longitudinal center under plate body, and longitudinally through cavity is as collection drainage gallery in the box construct.Drainage system includes the arch wall range drainage system, tunnel bottom drainage system and the tunnel inner water drainage system that are connected with collection drainage gallery.
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 rock
The tunnel-liner in molten area and its waterproof and water drainage system construction.
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, it is especially more by big, the topographic and geologic complicated condition of sweep etc. in Southwest Mountainous Areas, karsts developing area, and circuit show line
The restriction of kind factor, Karst Tunnel scale increase sharply.Since karst and karst water development are with complexity, diversity and random
The features such as rule property, it is higher and higher that Karst Tunnel of growing up builds risk particularly operations risks.
Through investigation, 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 particularly 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 karst area tunnel water damage risk, ensure operation security there is an urgent need to.
Invention content
The technical problems to be solved by the invention are to provide a kind of not contour longeron of tunnel bottom setting longitudinal direction collection drainage gallery
The lining cutting of stalk floor type and its drainage system construction are carried, work of the underground water to tunnel-liner bottom structure is even eliminated to reduce
With, it is effective to solve the problems, such as karst or the regional tunnel inverted arch floating deformation of underground water development or tunnel bottom structure cracking destruction, with true
Protect stabilization and the safety of constructing tunnel and operation.
The technical solution adopted by the present invention to solve the technical problems is as follows：
The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery of the present invention and its draining system
System construction, including arch wall preliminary bracing structure, arch wall secondary liner structure and arch wall range waterproof layer and drainage system,
It is characterized in：The longeron that the arch wall secondary liner structure both sides abutment wall bottom setting consolidates therewith is as its bearing structure, longeron
Section is not contour variable cross-section；Bottom plate is set between two side girder, and bottom plate transverse ends are connect with same side girder, under plate body
Centrally disposed box construct along longitudinal direction, longitudinally through cavity is as collection drainage gallery in the box construct；The draining
System includes the arch wall range drainage system, tunnel bottom drainage system and the tunnel inner water drainage system that are connected with collection drainage gallery.
It is longitudinally spaced that tunnel bottom drainage system includes longitudinal french drain, circumferential french drain and tunnel bottom tapping pipe, tunnel bottom tapping pipe
It is embedded on the both sides side wall of box-shaped construct in advance；It is described circumferential direction french drain along tunnel excavation direction interval lay and with longitudinal french drain shape
Drainage system is reticulated, suction is taken drainage tunnel bottom underground water by force and introduced in collection drainage gallery through tunnel bottom tapping pipe, and underground water is avoided to arrange
Letting out not smooth or heavy rain season groundwater run off abruptly increase leads to tunnel bottom structure cracking destruction.
The arch wall range drainage system includes circle draining blind pipe arch wall section and circle draining blind pipe tunnel bottom section；Circumferential direction row
Water blind pipe arch wall section is laid in along tunnel excavation direction interval between non-woven geotextile and splash guard, and arch wall range underground water passes through ring
To draining blind pipe arch wall section collect after through circle draining blind pipe tunnel bottom section be discharged into collection drainage gallery in.
The tunnel inner water drainage system includes the hole medial sulcus being fixedly installed on two side girders, extends in longeron along circuit
Tapping pipe is buried at direction interval, and lateral ties water is buried along circuit extending direction interval between hole medial sulcus and collection drainage gallery
Pipe, underground water collect and precipitate through tapping pipe introducing hole medial sulcus, introduced in collection drainage gallery through lateral ties water pipe.
The beneficial effects are mainly as follows following aspects：
1st, tunnel bottom uses floor structure, excavates operation and is more convenient, overcomes traditional lining types inverted arch foundation excavation curvature
The problems such as leading not easy to control.The liner structure that traditional tunnel bottom is inverted arch form is compared to, construction material is saved, effectively reduces work
Journey construction investment；
2nd, tunnel bottom uses floor structure, 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 track knot
Structure destroys；
3rd, bearing structure of the setting longeron in tunnel bottom both sides as arch wall secondary lining, can be effective to weak surrounding rock location tunnel
Control arch supporting construction sedimentation and deformation, to karst area tunnel can effectively across certain size range Karst Features (molten chamber,
Fill solution cavity, corroded breaking zone etc.).With reference to stress and functional requirement, longeron uses not contour variable cross-section form, with reference to stress
Performance can save material, can be that tunnel internal channel arranges reserved space；
The 4th, arch wall range drainage system, tunnel bottom drainage system and tunnel inner water drainage system totally three sets of drainage systems are set, it can
By property higher, drainability is stronger, can effectively drainage arch wall range and tunnel bottom underground water, avoid traditional liner structure because of underground water
Lining cutting structure crack destroys after drainage difficulty or heavy rain season groundwater run off abruptly increase lead to inverted arch.
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, to ensure the stabilization of constructing tunnel and operation and safety
Property.
Description of the drawings
This specification includes following eight width attached drawing：
Fig. 1 is that the not contour longeron of tunnel bottom of the present invention setting longitudinal direction collection drainage gallery carries the lining cutting of stalk floor type and its row
The cross-section diagram of water system construction；
Fig. 2 is the enlarged drawing of A parts in Fig. 1；
Fig. 3 is that I-I lines cut open figure along Fig. 1；
Fig. 4 is the sectional view of II-II line along Fig. 3；
Fig. 5 is the sectional view of III-III line along Fig. 3；
Fig. 6 is the sectional view of IV-IV line along Fig. 3；
Fig. 7 is the sectional view of V-V line along Fig. 3；
Fig. 8 is the sectional view of VI-VI line along Fig. 7.
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, arch wall range waterproof layer 20, geotextiles 20a, splash guard 20b, circle draining
Blind pipe arch wall section 31a, it circle draining blind pipe tunnel bottom section 31b, longitudinal french drain 32a, circumferential french drain 32b, tunnel bottom tapping pipe 32c, lets out
Water pipe 33a, lateral ties water pipe 33b, arch wall secondary liner structure 40, bottom plate 41, longeron 42, box construct 43, collection sluice
Channel B, well head C, hole medial sulcus D, cover board 44 are checked.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Referring to figs. 1 to Fig. 7, the not contour longeron carrying stalk floor type of tunnel bottom of the invention setting longitudinal direction collection drainage gallery
Lining cutting and its drainage system construction, including arch wall preliminary bracing structure 10, arch wall secondary liner structure 40 and arch wall range waterproof
Layer 20 and drainage system.42 conduct of longeron that 40 both sides abutment wall bottom of the arch wall secondary liner structure setting consolidates therewith
Its bearing structure can effectively control arch supporting construction sedimentation and deformation to weak surrounding rock location tunnel, can to karst area tunnel
Effectively across the Karst Features of certain size range (molten chamber, filling solution cavity, corroded breaking zone etc.).It is needed with reference to stress and function
It asks, 42 section of longeron is not contour variable cross-section, and material can be saved with reference to stress performance, and can be that internal channel arrangement in tunnel is left blank in advance
Between.
Referring to figs. 1 to Fig. 7, between two side girder 42 set bottom plate 41,41 transverse ends of bottom plate with same side girder 42
Connection.It is not required to apply Concrete Filled body on bottom plate 41, effectively prevents traditional bent wall band inverted arch lining cutting since underground water passes through
Inverted arch construction joint, which enters to squeeze between inverted arch and inverted arch blind, destroys obturator, and track structure is caused to destroy.Excavate operation more
It is convenient, it overcomes traditional lining types inverted arch foundation excavation curvature and is difficult to control the problems such as leading, and tunnel excavation amount can be reduced, save
About construction material effectively reduces engineering construction investment.
Referring to figs. 1 to Fig. 7, box construct 43, the box construct 43 are set along longitudinal center under the plate body of bottom plate 41
Interior longitudinally through cavity is as collection drainage gallery B.The drainage system includes the arch wall range being connected with collection drainage gallery B
Drainage system, tunnel bottom drainage system and tunnel inner water drainage system.The present invention three sets of drainage systems of setting, reliability higher, draining
Ability is stronger, can effectively drainage arch wall range and tunnel bottom underground water, avoid traditional liner structure not smooth or sudden and violent because of ground water discharge
Lining cutting structure crack destroys after rainy season groundwater run off abruptly increase leads to inverted arch.
Referring to Figures 1 and 2, the arch wall range waterproof layer 20, positioned at 10 structure of arch wall preliminary bracing and the secondary lining of arch wall
Between building structure 40, the splash guard 20b of geotextiles 20a and outer layer including internal layer.The arch wall preliminary bracing structure 10 includes
Cover the arch wall shotcrete layer 10a and the arch wall system anchor bolt 10c along arch wall quincuncial arrangement of 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.
With reference to Fig. 1, Fig. 3 to Fig. 8, tunnel bottom drainage system includes longitudinal french drain 32a, circumferential direction french drain 32b and tunnel bottom and lets out
On the longitudinally spaced pre- both sides side wall for being embedded in box-shaped construct 43 of water pipe 32c, tunnel bottom tapping pipe 32c.The circumferential direction french drain 32b
It is laid along tunnel excavation direction interval and forms reticulate drainage system with longitudinal french drain 32a, suction is taken drainage tunnel bottom underground water by force and passed through
Tunnel bottom tapping pipe 32c is introduced in collection drainage gallery B, avoids ground water discharge not smooth or heavy rain season groundwater run off abruptly increase causes
Tunnel bottom structure cracking destruction.
With reference to Fig. 3, Fig. 7 and Fig. 8, the 41 upper edge tunnel extending direction of bottom plate is arranged at intervals to be connected with collection drainage gallery B
Logical inspection well head C checks that well head C upper ports setting cover board 44 is closed, prevents drainage gallery flowing water during operation from pouring in tunnel
It is interior.During operation, it can enter collection drainage gallery B from well head C is checked and carry out dredging.
With reference to Fig. 2, Fig. 3 and Fig. 5, the arch wall range drainage system includes circle draining blind pipe arch wall section 31a and circumferential direction
Draining blind pipe tunnel bottom section 31b.Circle draining blind pipe arch wall section 31a is laid in non-woven geotextile 20a along tunnel excavation direction interval
Between splash guard 20b, arch wall range underground water collected by circle draining blind pipe arch wall section 31a after through circle draining blind pipe tunnel bottom
Section 31b is discharged into collection drainage gallery B.
With reference to Fig. 1 and Fig. 4, the tunnel inner water drainage system includes the hole medial sulcus being fixedly installed on two side girders 42
D, longeron 42 is interior to bury tapping pipe 33a along circuit extending direction interval, prolongs between hole medial sulcus D and collection drainage gallery B along circuit
It stretches direction interval and buries lateral ties water pipe 33b, underground water collects and precipitates through tapping pipe 33a introducings hole medial sulcus D, through transverse direction
Water pipe 33b is contacted to introduce in collection drainage gallery B.
The above is to explain through diagrams the longitudinal not contour longeron carrying for collecting drainage gallery of tunnel bottom setting of the present invention directly
The lining cutting of wall floor type and its some principles of drainage system construction, be not intended to by the present invention be confined to shown in and it is described specific
In structure and the scope of application, thus it is every it is possible that the corresponding modification being utilized and equivalent, belong to the present invention and applied
The scope of the claims.
Claims (7)
1. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction, packet
Arch wall preliminary bracing structure (10), arch wall secondary liner structure (40) and arch wall range waterproof layer (20) and drainage system are included,
It is characterized in that：The longeron (42) that arch wall secondary liner structure (40) the both sides abutment wall bottom setting consolidates therewith is as its carrying
Structure, longeron (42) section are not contour variable cross-section；Bottom plate (41), bottom plate (41) lateral two are set between two side girder (42)
End is connect with same side girder (42), and box construct (43) is set along longitudinal center under plate body, and the box construct (43) is interior
Longitudinally through cavity is as collection drainage gallery (B)；The drainage system includes the arch wall model being connected with collection drainage gallery (B)
Enclose drainage system, tunnel bottom drainage system and tunnel inner water drainage system.
2. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom as described in claim 1 setting longitudinal direction collection drainage gallery and
Its drainage system constructs, it is characterized in that：Tunnel bottom drainage system includes longitudinal french drain (32a), circumferential french drain (32b) and tunnel bottom
Tapping pipe (32c), tunnel bottom tapping pipe (32c) is longitudinally spaced pre- to be embedded on the both sides side wall of box-shaped construct (43)；The circumferential direction
French drain (32b) is laid along tunnel excavation direction interval and forms reticulate drainage system with longitudinal french drain (32a), and drainage tunnel bottom is taken in suction by force
Underground water is simultaneously introduced through tunnel bottom tapping pipe (32c) in collection drainage gallery (B), avoids ground water discharge not smooth or heavy rain season underground
Water abruptly increase leads to tunnel bottom structure cracking destruction.
3. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom as described in claim 1 setting longitudinal direction collection drainage gallery and
Its drainage system constructs, it is characterized in that：The arch wall range drainage system includes circle draining blind pipe arch wall section (31a) and circumferential direction
Draining blind pipe tunnel bottom section (31b)；Circle draining blind pipe arch wall section (31a) is laid in non-woven geotextile along tunnel excavation direction interval
Between (20a) and splash guard (20b), arch wall range underground water is arranged after being collected by circle draining blind pipe arch wall section (31a) through circumferential direction
Water blind pipe tunnel bottom section (31b) is discharged into collection drainage gallery (B).
4. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom as described in claim 1 setting longitudinal direction collection drainage gallery and
Its drainage system constructs, it is characterized in that：The tunnel inner water drainage system includes being fixedly installed in the hole on two side girders (42)
Lateral sulcus (D), longeron (42) is interior to bury tapping pipe (33a), hole medial sulcus (D) and collection drainage gallery along circuit extending direction interval
(B) lateral ties water pipe (33b) is buried along circuit extending direction interval between, underground water is introduced through tapping pipe (33a) on the inside of hole
Ditch (D) collects and precipitates, and is introduced in collection drainage gallery (B) through lateral ties water pipe (33b).
5. the V-arrangement skewback floor type lining cutting of setting drainage gallery in tunnel bottom as described in claim 1 and its drainage system construction,
It is characterized in：Bottom plate (41) upper edge tunnel extending direction is arranged at intervals the inspection well head being connected with collection drainage gallery (B)
(C), it checks that well head (C) upper port setting cover board (44) is closed, prevents drainage gallery flowing water during operation from pouring in tunnel.
6. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom as described in claim 1 setting longitudinal direction collection drainage gallery and
Its drainage system constructs, it is characterized in that：The arch wall range waterproof layer (20), positioned at arch wall preliminary bracing (10) structure and arch wall
Between secondary liner structure (40), the splash guard (20b) of geotextiles (20a) and outer layer including internal layer.
7. the not contour longeron carrying stalk floor type lining cutting of tunnel bottom as described in claim 1 setting longitudinal direction collection drainage gallery and
Its drainage system constructs, it is characterized in that：The arch wall preliminary bracing structure (10) is mixed including the arch wall injection for covering arch wall country rock
Solidifying soil layer (10a) and the arch wall system anchor bolt (10c) along arch wall quincuncial arrangement.In the arch wall shotcrete layer (10a)
Arch wall steelframe (10b) is laid along tunnel excavation direction interval, bar-mat reinforcement is added in arch wall shotcrete layer (10a).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711448665.9A CN108222963A (en) | 2017-12-27 | 2017-12-27 | The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711448665.9A CN108222963A (en) | 2017-12-27 | 2017-12-27 | The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction |
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| CN108222963A true CN108222963A (en) | 2018-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519192A (en) * | 2019-01-23 | 2019-03-26 | 四川省交通运输厅公路规划勘察设计研究院 | Store up drainage pressure-reducing construction and the tunnel structure across soft rock section in tunnel |
| CN109630194A (en) * | 2019-01-29 | 2019-04-16 | 中国建筑局（集团）有限公司 | A kind of karst region fault belt Tunnel Gushing administration structure and its construction method |
| CN109736884A (en) * | 2019-02-20 | 2019-05-10 | 中国建筑一局(集团)有限公司 | A kind of disposition structure and its construction method close to tunnel underground river water burst |
| CN112832862A (en) * | 2021-03-16 | 2021-05-25 | 中铁城建集团第三工程有限公司 | Construction method of drainage system for preventing water from flowing backwards after tunnel structure bottom plate leaks |
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| CN109519192A (en) * | 2019-01-23 | 2019-03-26 | 四川省交通运输厅公路规划勘察设计研究院 | Store up drainage pressure-reducing construction and the tunnel structure across soft rock section in tunnel |
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| CN109630194A (en) * | 2019-01-29 | 2019-04-16 | 中国建筑局（集团）有限公司 | A kind of karst region fault belt Tunnel Gushing administration structure and its construction method |
| CN109630194B (en) * | 2019-01-29 | 2024-02-23 | 中国建筑一局(集团)有限公司 | Karst region fault fracture zone tunnel water burst treatment structure and construction method thereof |
| CN109736884A (en) * | 2019-02-20 | 2019-05-10 | 中国建筑一局(集团)有限公司 | A kind of disposition structure and its construction method close to tunnel underground river water burst |
| CN109736884B (en) * | 2019-02-20 | 2024-03-15 | 中国建筑一局(集团)有限公司 | Treatment structure for water gushing in underground river close to tunnel and construction method of treatment structure |
| CN112832862A (en) * | 2021-03-16 | 2021-05-25 | 中铁城建集团第三工程有限公司 | Construction method of drainage system for preventing water from flowing backwards after tunnel structure bottom plate leaks |
| CN112832862B (en) * | 2021-03-16 | 2022-04-19 | 中铁城建集团第三工程有限公司 | Construction method of drainage system for preventing water from flowing backwards after tunnel structure bottom plate leaks |
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Application publication date: 20180629 |