CN206233950U - Depressurize drainage system in a kind of high-speed railway single-track tunnel base - Google Patents
Depressurize drainage system in a kind of high-speed railway single-track tunnel base Download PDFInfo
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- CN206233950U CN206233950U CN201621213781.3U CN201621213781U CN206233950U CN 206233950 U CN206233950 U CN 206233950U CN 201621213781 U CN201621213781 U CN 201621213781U CN 206233950 U CN206233950 U CN 206233950U
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- Prior art keywords
- tunnel
- lateral sulcus
- drainage
- speed railway
- draining
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000006837 decompression Effects 0.000 claims abstract description 12
- 239000004746 geotextile Substances 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000008595 infiltration Effects 0.000 claims description 7
- 238000001764 infiltration Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 abstract description 12
- 230000007812 deficiency Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model belongs to tunnels and underground engineering field, in order to solve the deficiency of existing high-speed railway single-track tunnel substrate drainage system, the utility model provides a kind of high-speed railway single-track tunnel base decompression drainage system, draining lateral sulcus including both sides in tunnel and the cover plate at the top of draining lateral sulcus, below draining lateral sulcus, preliminary bracing secondary lining outside near tunnel center is provided with some filter wells along tunnel longitudinally spaced distributions, some vertically arranged drainage ducts are connected between each filter well and draining lateral sulcus, the bottom of the bottom embedment filter well of drainage duct is simultaneously enclosed with permeable geotextiles, accessed in draining lateral sulcus by the side wall of draining lateral sulcus on the top of drainage duct.The utility model collects substrate underground water by default filter well, and in the presence of head pressure, the part water drains into tunnel drainage lateral sulcus through the drainage duct of pre-plugged, finally arranges outside to hole.
Description
Technical field
The utility model belongs to tunnels and underground engineering field, and in particular to a kind of high-speed railway single-track tunnel base decompression
Drainage system.
Background technology
The guarded drainage technology in tunnel, is exactly always the important step during Tunnel Design, and Tunnel Design is to underground water
Treatment will have influence on stress, influence degree of ecological environment of structure etc..For building the Railway Tunnel in region of FuShui,
Because substrate is acted on by groundwater pressure, cause inverted arch under effect of water pressure, produce inverted arch lifting, the disease of craze and transfiguration
Evil, so that high speed railway track deforms, causes guideway irregularity, and serious potential safety hazard is left to later stage operation, makes
Into life and property loss.
To prevent because groundwater pressure is excessive, and cause tunnel inverted arch to bear excessive active force, cause inverted arch to swell
Deformation, destroys the ride comfort of high-speed railway circuit, has some scholars to be studied it, it is proposed that some working measures.Wang Yuan
Exist clearly《The decompression guarded drainage technical research of rich water tunnel subregion》Proposed in one text, pvc pipe is installed in advance in centre drain bottom
With substrate UNICOM, to when water pressure increases, underground water can be discharged into centre drain along conduit, be on this theoretical method
Feasible, but in actual application, pvc pipe is susceptible to plugging phenomenon, simultaneously because single-track tunnel is not provided with central row
Ditch, is difficult to realize drainage effect.Some mountain tunnels of Germany due to buried depth less, using full plugging structure, but head compared with
Waterpower is reduced when high using the method in inverted arch gutter arranged below, the method effectively can discharge substrate underground water
Outside tunnel, base pressure is reduced, but the method needs to apply gutter inside and outside tunnel-liner, and quantities is larger.Such as patent
201610419973.8, its principle is to realize that Tunnel Base is arranged by the way that the buried weeper drain in both sides connected with transverse drainage blind pipe
Water, while realizing the pressure release to sole using the pressure reduction well in weeper drain, there is following drawback in the drainage system：1st, its depth
Underface of the weeper drain located at ditch in tunnel is buried, and weeper drain is along tunnel longitudinally elongated design, then in Tunnel Base
Weeper drain of the synchronous slotting construction on the outside of tunnel-liner is needed during lower half section excavation, quantities is big, and high cost can be right
The integral construction progress in tunnel is impacted；2nd, the buried weeper drain of elongated setting can be to the carrying uniformity of tunnel-liner layer
Impact, in order to ensure that tunnel-liner layer carries uniformity, weeper drain width can not be excessive and should be tried one's best and tunnel Nei Shui
Ditch consistency from top to bottom, the precise requirements to constructing are higher；3rd, pressure reduction well top is higher by the ditch cross-section of river in tunnel, i.e. pressure reduction well
With the effect that steel floral tube only serves substrate pressure release, buried weeper drain plays arterial drainage, but when the tunnel base of region of FuShui
When a large amount of ponding and buried weeper drain generation longitudinal direction blocking occurs in bottom, drainage, and underground plugging point can not be realized completely
It is difficult to investigate, causes block clearing high cost.
The content of the invention
The utility model is in order to solve the deficiency of existing high-speed railway single-track tunnel substrate drainage system, it is to avoid inverted arch swells
Deformation, causes potential safety hazard during railway operation, and the utility model depressurizes there is provided a kind of high-speed railway single-track tunnel base
Drainage system.
The utility model is adopted the following technical scheme that：
The draining lateral sulcus of both sides and located at row in a kind of decompression of high-speed railway single-track tunnel base drainage system, including tunnel
Cover plate at the top of water lateral sulcus, some edges are provided with below draining lateral sulcus, on the outside of the preliminary bracing secondary lining at tunnel center
The filter well of tunnel longitudinally spaced distributions, is connected with some vertically arranged drainage ducts between each filter well and draining lateral sulcus,
The bottom of the bottom embedment filter well of drainage duct is simultaneously enclosed with permeable geotextiles, the top of drainage duct by draining lateral sulcus side
Wall is accessed in draining lateral sulcus.
The filter well section is rectangular configuration, cross dimensions for it is long × wide=（60cm~80cm）×（60cm~80cm）, ooze
Well is not less than 80cm near the depth of the tunnel central side borehole wall, depending on other borehole wall depth are with the lining cutting profile of tunnel inverted arch.
Longitudinal pitch between the filter well is 15m ~ 20m.
The longitudinal pitch between drainage duct in each filter well is 15 ~ 20cm.
The drainage duct is " inverted L " structure, and transverse tube end is vertical with the draining lateral sulcus side wall at 5cm below cover plate to be connected,
The vertical segment for imbedding filter well is provided with quincuncial water seepage hole, and the spacing between water seepage hole is 5 ~ 10cm.
Rubble is filled with the filter well.
The utility model has the advantages that：
1st, the utility model presets filter well by tunnel inverted arch substrate, to collect the underground water of tunnel inverted arch substrate,
The underground water that filter well collects, in the presence of head pressure, the part water drains into tunnel and arranges through the drainage duct of pre-plugged
Water lateral sulcus, finally arranges outside to hole, and more substrate decompression drainage system innovation is to be provided with substrate filter well, Jiang Shuihui
Combine among filter well, and then be conducive to the discharge of underground water.
2nd, the rich water situation according to stratum, can reasonably arrange the quantity of filter well, make design more reasonable, effective,
And then quantities is reduced, shorten the duration；Filter well end permeable geotextiles parcel termination is stretched into drainage duct simultaneously, so as to keep away
Exempt from the blockage that seeps water, it is ensured that the smooth exclusion of sole, reduce water pressure at the bottom of the foundation, and then reduce hidden dangers in project；
3rd, filter well arranged for interval, is conducive to investigating hull-borne and the block clearing of filter well.
Brief description of the drawings
Fig. 1 is transverse cross of the present utility model；
Fig. 2 is 2-2 sectional views；
Fig. 3 is 1-1 sectional views；
Fig. 4 is the structural representation of drainage duct；
In figure：At the beginning of 1- cover plates, 2- drainings lateral sulcus, the permeable geotextiles of 3-, 4- drainage ducts, 5- filter wells, 6- cable troughs, 7-
Phase supporting secondary lining, 8- rubbles, 9- water seepage holes.
Specific embodiment
With reference to accompanying drawing, specific embodiment of the present utility model is described further：
The draining lateral sulcus of both sides in the decompression of high-speed railway single-track tunnel base drainage system, including tunnel as shown in Figure 1
With the cover plate at the top of draining lateral sulcus, set below draining lateral sulcus, on the outside of the preliminary bracing secondary lining at tunnel center
There are some filter wells along tunnel longitudinally spaced distributions, some vertically arranged rows are connected between each filter well and draining lateral sulcus
Water conduit, the bottom of the bottom embedment filter well of drainage duct is simultaneously enclosed with permeable geotextiles, and the top of drainage duct is by draining
The side wall of lateral sulcus is accessed in draining lateral sulcus.
After inverted arch excavates completion, below draining lateral sulcus, tunnel central side suitable distance, rectangular cross section infiltration is excavated
Well, cross dimensions for it is long × wide=（60cm~80cm）×（60cm~80cm）, infiltration well depth is with close tunnel central side borehole wall depth
Degree is reference, is advisable with 80cm, depending on other borehole wall depth are with tunnel inverted arch profile.
The structure of drainage duct as shown in figure 4, be inverted L shape, embedment infiltration well section blossom type arrangement water seepage hole, pitch of holes with
5 ~ 10cm is advisable.
Pre-buried drainage duct, it is proposed that using Φ 100PVC pipes；Drainage duct is stretched into infiltration well section and is tied up using permeable geotextiles
Prick；The drainage duct other end introduces the water into draining lateral sulcus at 5cm below cover plate.
As shown in Fig. 2 drainage duct is longitudinally arranged along tunnel, spacing is advisable with 15 ~ 20cm；Filter well spacing is according to tunnel
Country rock rich water situation is advisable with 15m ~ 20m.
As shown in figure 3, fixed drainage duct, will be filled, it is ensured that in filter well in filter well using clean rubble
Water penetration.
After completing above operation, subsequent construction is carried out in the case where drainage duct safety is ensured.
The system can successfully collect underground water, while smoothly can also arrange to tunnel drainage side substrate underground water
Ditch, and then reduce water pressure at the bottom of the foundation, prevent inverted arch from swelling deformation, reduce the hidden dangers in project during the operation of high-speed railway later stage.
Its application is simple, effect is obvious, it is ensured that the various factors such as safety, quality, duration, benefit, constructing tunnel level is improved again
One step, it is with strong points, with extremely extensive promotional value.
Claims (6)
1. in a kind of decompression of high-speed railway single-track tunnel base drainage system, including tunnel both sides draining lateral sulcus（2）Be located at
Draining lateral sulcus（2）The cover plate at top（1）, it is characterised in that：In draining lateral sulcus（2）Lower section, the preliminary bracing near tunnel center
Secondary lining outside is provided with some filter wells along tunnel longitudinally spaced distributions（5）, each filter well（5）With draining lateral sulcus（2）It
Between be connected with some vertically arranged drainage ducts（4）, drainage duct（4）Bottom embedment filter well（5）Bottom and wrap up
There are permeable geotextiles（3）, drainage duct（4）Top by draining lateral sulcus（2）Side wall access draining lateral sulcus（2）It is interior.
2. high-speed railway single-track tunnel base according to claim 1 decompression drainage system, it is characterised in that：The infiltration
Well（5）Section is rectangular configuration, cross dimensions for it is long × wide=（60cm~80cm）×（60cm~80cm）, filter well（5）Near tunnel
The depth of the road central side borehole wall is not less than 80cm, depending on other borehole wall depth are with the lining cutting profile of tunnel inverted arch.
3. high-speed railway single-track tunnel base according to claim 2 decompression drainage system, it is characterised in that：The infiltration
Well（5）Between longitudinal pitch be 15m ~ 20m.
4. high-speed railway single-track tunnel base according to claim 3 decompression drainage system, it is characterised in that：It is described respectively to ooze
Well（5）Interior drainage duct（4）Between longitudinal pitch be 15 ~ 20cm.
5. high-speed railway single-track tunnel base according to claim 4 decompression drainage system, it is characterised in that：The draining
Conduit（4）It is " inverted L " structure, the draining lateral sulcus below transverse tube end and cover plate at 5cm（2）Side wall is vertically connected, and imbeds filter well
（5）Vertical segment be provided with quincuncial water seepage hole（9）, water seepage hole（9）Between spacing be 5 ~ 10cm.
6. high-speed railway single-track tunnel base according to claim 5 decompression drainage system, it is characterised in that：The infiltration
Well（5）It is interior filled with rubble（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621213781.3U CN206233950U (en) | 2016-11-11 | 2016-11-11 | Depressurize drainage system in a kind of high-speed railway single-track tunnel base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621213781.3U CN206233950U (en) | 2016-11-11 | 2016-11-11 | Depressurize drainage system in a kind of high-speed railway single-track tunnel base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206233950U true CN206233950U (en) | 2017-06-09 |
Family
ID=58991264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621213781.3U Expired - Fee Related CN206233950U (en) | 2016-11-11 | 2016-11-11 | Depressurize drainage system in a kind of high-speed railway single-track tunnel base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703881A (en) * | 2016-12-01 | 2017-05-24 | 中铁十二局集团有限公司 | Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate |
| CN108005679A (en) * | 2017-12-27 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of dumbbell shape tunnel bottom liner structure with bilateral collection gallery |
-
2016
- 2016-11-11 CN CN201621213781.3U patent/CN206233950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703881A (en) * | 2016-12-01 | 2017-05-24 | 中铁十二局集团有限公司 | Pressure-reduction water-draining system for high-speed-railway-single-track-tunnel substrate |
| CN108005679A (en) * | 2017-12-27 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of dumbbell shape tunnel bottom liner structure with bilateral collection gallery |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |