CN208073508U - The not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure - Google Patents
The not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure Download PDFInfo
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- CN208073508U CN208073508U CN201721869577.1U CN201721869577U CN208073508U CN 208073508 U CN208073508 U CN 208073508U CN 201721869577 U CN201721869577 U CN 201721869577U CN 208073508 U CN208073508 U CN 208073508U
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Abstract
The not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure, to reduce or even eliminate effect of the underground water to tunnel-liner bottom structure, 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 stabilization and the safety of constructing tunnel and operation.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 cavity longitudinally through along longitudinal center's setting box construct, the box construct is as collection drainage gallery under plate body.Drainage system includes arch wall range drainage system, tunnel bottom drainage system and the tunnel inner water drainage system being connected with collection drainage gallery.
Description
Technical field
The utility model is related to tunnel-liners and drainage system to construct, more particularly to one kind applying to underground water development location
Or the tunnel lining structure of karst area.
Background technology
Come into 21st century, railway construction in China high speed development, the above high standard double track railways of speed per hour 200km are built
More and more, especially in Southwest Mountainous Areas, karsts developing area, and circuit show line, by sweep, big, topographic and geologic complicated condition etc. is more
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 especially 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. ballastless track bed is 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.It is very poor to foundation deformation with the huge stiffness difference of tunnel structure, deformation and track structure
Adaptability be further exacerbated by tunnel bottom water evil to the adverse effect and difficulty of governance of operation security.
(2) liner structure especially inverted arch strain cracking.
1. limited by vertical, the circumferential blind pipe and abutment wall drain hole drainability that are arranged 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 to lead 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；Spraying water, gushing silt etc. occur 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 have inverted arch lining cutting.By taking one-tunnel two-tracks tunnel as an example, drainage system is with " tunnel
Draining in vivo " 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 be discharged outside hole.
Drainage system in tunnel body main drawback is that：
1. thering is the pressure release point of pressure underground water to be respectively positioned on to be arranged inside lining cutting agent structure, lining cutting agent structure is caused to bear
Hydrostatic pressing or hydrodynamic range are larger.
2. Central drain (or lateral sulcus) is set within tunnel structure, the periphery underground water of main ejectment arch wall range, tunnel
Inverted arch ponding below can not effective ejectment, once under continuous rainfall or rainstorm weather, under Local topography inverted arch crevice water or
Pipeline water because can not in time ejectment cause hydraulic pressure 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, 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 or even eliminate tunnel bottom water pressure, become drop
Low karst area tunnel water damage risk, ensure operation security there is an urgent need to.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of tunnel bottoms, and the not contour of longitudinal collection drainage gallery is arranged
Longeron carries stalk floor type lining structure, to reduce or even eliminate effect of the underground water to tunnel-liner bottom structure, effectively
Karst or the regional tunnel inverted arch floating deformation of underground water development or tunnel bottom structure cracking destruction are solved the problems, such as, to ensure that tunnel is applied
The stabilization and safety of work and operation.
Technical solution is as follows used by the utility model solves its technical problem：
The not contour longeron carrying stalk floor type lining cutting of the longitudinal collection drainage gallery of the utility model tunnel bottom setting and its row
Water system constructs, including arch wall preliminary bracing structure, arch wall secondary liner structure and arch wall range waterproof layer, and draining system
System, it is characterized in that：The arch wall secondary liner structure both sides abutment wall bottom longeron that consolidates therewith of setting 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, plate
Cavity longitudinally through along longitudinal center's setting box construct, the box construct is as collection drainage gallery under body；It is described
Drainage system includes arch wall range drainage system, tunnel bottom drainage system and the tunnel internal drainage system being connected with collection drainage gallery
System.
Tunnel bottom drainage system includes that longitudinal french drain, circumferential french drain and tunnel bottom tapping pipe, tunnel bottom tapping pipe are longitudinally spaced
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 unsmooth 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
It is discharged into collection drainage gallery through circle draining blind pipe tunnel bottom section after collecting to draining blind pipe arch wall section.
The tunnel inner water drainage system includes the hole medial sulcus being fixedly installed on two side girders, is extended along circuit in longeron
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 of the utility model are mainly reflected in following aspects：
1, 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.It is compared to the liner structure that traditional tunnel bottom is inverted arch form, construction material is saved, effectively reduces work
Journey construction investment；
2, 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；
3, 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 cross over certain size range Karst Features (molten chamber,
Fill solution cavity, corroded breaking zone etc.).In conjunction with stress and functional requirement, longeron uses not contour variable cross-section form, in conjunction with stress
Performance can save material, can be that tunnel internal channel arranges reserved space；
4, 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 utility model changes tunnel bottom structure stress form by being transformed to conventional tunnel lining cutting tunnel bottom structure form
And drainage system, effect of the underground water to tunnel-liner bottom structure is reduced or even eliminated, karst or underground water hair are effectively solved
The problem of educating regional tunnel inverted arch floating deformation or tunnel bottom structure cracking destruction, to ensure the stabilization and peace of constructing tunnel and operation
Quan Xing.
Description of the drawings
This specification includes following eight width attached drawing：
Fig. 1 is that the not contour longeron of the longitudinal collection drainage gallery of the utility model tunnel bottom setting carries stalk floor type lining cutting structure
The cross-section diagram made；
Fig. 2 is the enlarged drawing of the parts A 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 implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
Referring to Figure 1 to Figure 7, the not contour longeron carrying stalk bottom of the longitudinal collection drainage gallery of tunnel bottom setting of the utility model
Template lining structure, including arch wall preliminary bracing structure 10, arch wall secondary liner structure 40 and arch wall range waterproof layer 20, with
And drainage system.The longeron 42 that the setting of 40 both sides abutment wall bottom of the arch wall secondary liner structure consolidates therewith is as its carrying knot
Structure can effectively control arch supporting construction sedimentation and deformation to weak surrounding rock location tunnel, to karst area tunnel, can effectively cross over
The Karst Features (molten chamber, filling solution cavity, corroded breaking zone etc.) of certain size range.In conjunction with stress and functional requirement, longeron 42
Section is not contour variable cross-section, and material can be saved in conjunction with stress performance, and can be that tunnel internal channel arranges reserved space.
Referring to Figure 1 to Figure 7, between two side girder 42 be arranged 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 Figure 1 to Figure 7, along longitudinal center's setting box construct 43, the box construct 43 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 utility model three sets of drainage systems of setting, reliability higher,
Drainability is stronger, can effectively drainage arch wall range and tunnel bottom underground water, avoid traditional liner structure because ground water discharge is unsmooth
Or heavy rain season groundwater run off abruptly increase leads to lining cutting structure crack destruction after inverted arch.
Referring to Figures 1 and 2, the arch wall range waterproof layer 20 is located at arch wall preliminary bracing structure 10 and the secondary lining of arch wall
Between building structure 40, include the splash guard 20b of the geotextiles 20a of internal layer and outer layer.The arch wall preliminary bracing structure 10 includes
Cover the arch wall shotcrete layer 10a of the arch wall country rock and arch wall system anchor bolt 10c along arch wall quincuncial arrangement.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.
Referring to Fig.1, Fig. 3 to Fig. 8, tunnel bottom drainage system include that longitudinal french drain 32a, circumferential direction french drain 32b and tunnel bottom are let 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 unsmooth 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 setting of 41 upper edge tunnel extending direction interval of the bottom plate is 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
Drain 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.
Referring to Fig.1 and Fig. 4, the tunnel inner water drainage system include the hole medial sulcus being fixedly installed on two side girders 42
D, interior buried along circuit extending direction interval of longeron 42 are prolonged between tapping pipe 33a, 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 not contour longeron described above for only explaining through diagrams the longitudinal collection drainage gallery of the utility model tunnel bottom setting is held
Some principles for carrying stalk floor type lining structure are not intended to for the utility model to be confined to shown and described concrete structure
In the scope of application, therefore every corresponding modification for being possible to be utilized and equivalent, it belongs to the utility model and is applied
The scope of the claims.
Claims (7)
1. the not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure, including arch wall initial stage branch
Protection structure (10), arch wall secondary liner structure (40) and arch wall range waterproof layer (20) and drainage system, it is characterized in that：Institute
It states the longeron (42) that the setting of arch wall secondary liner structure (40) both sides abutment wall bottom consolidates therewith and is used as its bearing structure, longeron
(42) section is not contour variable cross-section；Bottom plate (41), bottom plate (41) transverse ends and homonymy are set between two side girder (42)
Longeron (42) connects, longitudinally through along longitudinal center's setting box construct (43), the box construct (43) under plate body
Cavity is as collection drainage gallery (B)；The drainage system includes that the arch wall range being connected with collection drainage gallery (B) drains system
System, tunnel bottom drainage system and tunnel inner water drainage system.
2. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, 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 along tunnel
Road excavates direction interval and lays and form reticulate drainage system with longitudinal french drain (32a), and suction takes drainage tunnel bottom underground water by force and through tunnel
Bottom tapping pipe (32c) introduces in collection drainage gallery (B), avoids ground water discharge unsmooth or heavy rain season groundwater run off abruptly increase causes
Tunnel bottom structure cracking destruction.
3. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, it is characterized in that：The arch wall range drainage system includes circle draining blind pipe arch wall section (31a) and circle draining blind pipe tunnel bottom
Section (31b)；Circle draining blind pipe arch wall section (31a) is laid in non-woven geotextile (20a) and waterproof along tunnel excavation direction interval
Between plate (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).
4. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, it is characterized in that：The tunnel inner water drainage system includes the hole medial sulcus (D) being fixedly installed on two side girders (42), longeron
(42) tapping pipe (33a) is buried along circuit extending direction interval in, along circuit between hole medial sulcus (D) and collection drainage gallery (B)
Lateral ties water pipe (33b) is buried at extending direction interval, and underground water collects and sinks through tapping pipe (33a) introducing hole medial sulcus (D)
It forms sediment, is introduced in collection drainage gallery (B) through lateral ties water pipe (33b).
5. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, it is characterized in that：The inspection shaft that bottom plate (41) the upper edge tunnel extending direction interval setting is connected with collection drainage gallery (B)
Mouth (C) checks that well head (C) upper port setting cover board (44) is closed, and prevents drainage gallery flowing water during operation from pouring in tunnel.
6. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, it is characterized in that：The arch wall range waterproof layer (20) is located at arch wall preliminary bracing structure (10) and arch wall secondary liner structure
(40) between, include the splash guard (20b) of the geotextiles (20a) of internal layer and outer layer.
7. the not contour longeron of setting longitudinal collection drainage gallery in tunnel bottom as described in claim 1 carries stalk floor type lining cutting structure
It makes, it is characterized in that：The arch wall preliminary bracing structure (10) include cover arch wall country rock arch wall shotcrete layer (10a) and
Along the arch wall system anchor bolt (10c) of arch wall quincuncial arrangement；Along tunnel excavation direction in the arch wall shotcrete layer (10a)
Arch wall steelframe (10b) is laid at interval, and bar-mat reinforcement is added in arch wall shotcrete layer (10a).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869577.1U CN208073508U (en) | 2017-12-27 | 2017-12-27 | The not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869577.1U CN208073508U (en) | 2017-12-27 | 2017-12-27 | The not contour longeron of the longitudinal collection drainage gallery of tunnel bottom setting carries stalk floor type lining structure |
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| CN208073508U true CN208073508U (en) | 2018-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222963A (en) * | 2017-12-27 | 2018-06-29 | 中铁二院工程集团有限责任公司 | The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction |
| CN109681270A (en) * | 2018-11-30 | 2019-04-26 | 金础础 | A kind of constructing tunnel fault belt row's stone drainage arrangement |
-
2017
- 2017-12-27 CN CN201721869577.1U patent/CN208073508U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222963A (en) * | 2017-12-27 | 2018-06-29 | 中铁二院工程集团有限责任公司 | The not contour longeron carrying stalk floor type lining cutting of tunnel bottom setting longitudinal direction collection drainage gallery and its drainage system construction |
| CN109681270A (en) * | 2018-11-30 | 2019-04-26 | 金础础 | A kind of constructing tunnel fault belt row's stone drainage arrangement |
| CN109681270B (en) * | 2018-11-30 | 2020-05-19 | 北京城建中南土木工程集团有限公司 | Broken stone drainage device that takes of fault for tunnel construction |
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