CN208219326U - A kind of high-speed railway Karst Subgrade construction having warning function - Google Patents
A kind of high-speed railway Karst Subgrade construction having warning function Download PDFInfo
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- CN208219326U CN208219326U CN201721676551.5U CN201721676551U CN208219326U CN 208219326 U CN208219326 U CN 208219326U CN 201721676551 U CN201721676551 U CN 201721676551U CN 208219326 U CN208219326 U CN 208219326U
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Abstract
A kind of high-speed railway Karst Subgrade construction with warning function is faced with effectively to solve the single Karst Subgrade of conventional high rate railway and collapses that risk is high, consolidation effect is bad, solution cavity can not precise positioning, engineering cost be high and the technical problems such as secondary reparation difficulty.Subgrade structure includes high-strength geotextile separation layer, lightweight concrete filling body and bedding, first high-strength geotextile separation layer is layed on ground, lightweight concrete filling body fills on the first high-strength geotextile separation layer, and bedding fills on lightweight concrete filling body；The first multi-point settlement observation system, the second multi-point settlement observation system is respectively set in lightweight concrete filling body bottom surface and top surface；Subgrade Subsidence early warning system is set near roadbed slope foot, the subgrade settlement data for acquiring and handling the first multi-point settlement observation system, the second multi-point settlement observation system is observed, the automatic early-warning when subgrade deformation, which has, transfinites trend；Reserved grouting behind shaft or drift lining repair system is set in lightweight concrete filling body.
Description
Technical field
The utility model relates to a kind of high-speed railway Karst Subgrade constructions for having warning function, can be used for railway engineering, public affairs
The fields such as road engineering, especially suitable for karst area, goaf location high-speed railway subgrade engineering.
Background technique
Can lava stratum it is wide in China's distribution area, the spies such as abundant, karst hole irregular distribution of Groundwater In The Karst Area
Property, builds the risk that high-speed railway subgrade faces karst collapse on it, conventional treatment measures be passed through with pile slab structure, or
Person carries out grouting and reinforcing to karst cavity.When being passed through with pile slab structure, there are project costs high, bored pile difficulty, design stake
Length is not easy determining, the complete bedrock thickness in stake bottom and is not easy the problems such as determining；If simple carry out grouting and reinforcing by karst cavity,
Effect is not easy to meet the requirement of high-speed railway especially non-fragment orbit high-speed railway, and the reparation of ballastless track roadbed is very tired
Difficulty will directly threaten the operation security of railway once generation collapses suddenly or moderate finite deformation.The utility model proposes a kind of easy
In construction, low cost, with warning function and the subgrade structure that is easy to repair, very good solution karst area roadbed is built upper
State problem.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high-speed railway Karst Subgrade with warning function
Construction, with effectively solve the single Karst Subgrade of conventional high rate railway face collapse risk is high, consolidation effect is bad, solution cavity can not essence
The certainly technical problems such as position, engineering cost height and secondary reparation difficulty.
It is as follows that the utility model solves technical solution used by above-mentioned technology:
A kind of high-speed railway Karst Subgrade of tool warning function of the utility model constructs, it is characterized in that: including first high
Strong geotextiles separation layer, lightweight concrete filling body and bedding, the first high-strength geotextile separation layer are layed on ground, and lightweight is mixed
Solidifying soil filling body fills on the first high-strength geotextile separation layer, and bedding fills on lightweight concrete filling body；Lightweight
The first multi-point settlement observation system, the second multi-point settlement observation system is respectively set in concrete filling body bottom surface and top surface；Roadbed
Early warning system is collapsed to be set near roadbed slope foot, it is heavy for acquiring and handling the first multi-point settlement observation system, the second multiple spot
The subgrade settlement data that drop observation system is observed, the automatic early-warning when subgrade deformation, which has, transfinites trend；Lightweight concrete fills
Reserved grouting behind shaft or drift lining repair system is set in vivo.
The utility model has the beneficial effects that give full play to lightweight concrete layer from heavy and light, self-strength is high the features such as, no
Only be greatly lowered train and on cover the additional stress banketed and acted on foundation soil, moreover it is possible in conjunction with high-strength geotextile separation layer,
Carrying and buffer function are played to top roadbed, ground collapse, which is greatly lowered, influences the deformation in high-speed railway subgrade face；Pass through
Pre-buried multi-point settlement observation system and Subgrade Subsidence early warning system energy real-time monitoring Karst Subgrade collapses；By being infused after reserving
It is difficult that slurry repair system solves the problems, such as that high speed ballastless track roadbed ground collapse is repaired.The construction and restorative procedure have easy
In construction, low cost, the high reliablity the advantages of, application prospect is extensive, great popularization.
Detailed description of the invention
This specification includes following two width attached drawing:
Fig. 1 is a kind of cross-sectional view for the high-speed railway Karst Subgrade construction for having warning function of the utility model；
Fig. 2 is a kind of skiagraph for the high-speed railway Karst Subgrade construction for having warning function of the utility model.
Flag activation and corresponding title in figure: basement rock A, coating B, stratum line of demarcation C, ground line D, solution cavity E, water
Bit line F, road bed G, lightweight concrete filling body 10, the first high-strength geotextile separation layer 11, the second high-strength geotextile separation layer
12, bedding 20, lateral slip casting channel 31, vertical slip casting channel 32, the first multi-point settlement observation system 41, the second multi-point settlement
Observation system 42, Subgrade Subsidence early warning system 43.
Specific embodiment
The utility model is further illustrated below by specific embodiment and in conjunction with attached drawing.
Referring to Figures 1 and 2, a kind of high-speed railway Karst Subgrade construction of tool warning function of the utility model includes first
High-strength geotextile separation layer 11, lightweight concrete filling body 10 and bedding 20, the first high-strength geotextile separation layer 11 are layed in ground
On base, lightweight concrete filling body 10 is filled on the first high-strength geotextile separation layer 11, and bedding 20 is filled in lightweight coagulation
On native filling body 10.Lightweight concrete layer 10 is set to bedding 20 with lower portion, instead of Traditional foundations filler, not only significantly
Reduce train and on cover the additional stress banketed and acted on ground, moreover it is possible to carrying is served to top roadbed, is greatly lowered
Ground collapse influences the deformation in high-speed railway subgrade face.When karst foundation collapses, the first high-strength geotextile separation layer
11 pairs of top roadbeds have carrying and buffer function, can prevent top roadbed from instantaneous collapse breaks occur.
Referring to Figures 1 and 2, the first multi-point settlement observation system is respectively set in 10 bottom surface of lightweight concrete filling body and top surface
41, the second multi-point settlement observation system 42.Subgrade Subsidence early warning system 42 is set near roadbed slope foot, for acquiring and locating
The first multi-point settlement observation system 41 is managed, the subgrade settlement data that the second multi-point settlement observation system 42 is observed, when roadbed becomes
Shape has automatic early-warning when transfiniting trend.First multi-point settlement observation system 41, the second multi-point settlement observation system 42 are using existing
The automatic sedimentation of multinode monitors system, and precision should reach 0.5mm.Subgrade Subsidence early warning system 43 can be used existing with number
The after-treatment system of word statistics, forecast function, and have the function of transmitting data automatically using cell phone network signal.
Referring to Figures 1 and 2, reserved grouting behind shaft or drift lining repair system is set in lightweight concrete filling body 10, and reserved grouting behind shaft or drift lining is repaired
Complex system includes being spaced setting along the spaced lateral slip casting channel 31 of route extending direction, each transverse direction slip casting channel 31 to erect
To slip casting channel 32, the lower end in vertical slip casting channel 32 is downward across water level line F in ground.Lateral slip casting channel 31 and vertical note
Slurry 32 spacing of channel is generally 3.5m or so, and the length in vertical slip casting channel 32 is by coating B thickness, foundation soil parameter and solution cavity
E distribution situation, which calculates, to be determined.When ground collapses, covered by reserved grouting behind shaft or drift lining repair system toward roadbed inside and ground
Slip casting in layer certain depth, while reparation collapses roadbed, by adjusting grouting pressure, moreover it is possible to make the roadbed lifting of sedimentation.
Referring to Fig.1, the lower part of the lightweight concrete filling body 10 is laid on the first multi-point settlement observation system 41
Second high-strength geotextile separation layer 12.The first high-strength geotextile separation layer 11, the second high-strength geotextile separation layer 12 use
Design strength is the geotextiles of 200kN/m~600kN/m.
Waterproof layer is arranged in the top surface of the lightweight concrete filling body 10 and slope surface spraying, adds above on waterproof layer outer surface
Spread one layer of anti-seepage geomembrane.High molecular material spraying can be used in waterproof layer, and thickness is generally 5mm.Height can be used in anti-seepage geomembrane
Density polyethylene (HDPE) anti-seepage geomembrane.One of transversal stretching is arranged every certain length in the lightweight concrete filling body 10
Seam, slit width are generally 2cm, are filled in transverse expansion joint using high-density foam plate, and outer surface is laid with one layer of lateral back sticking type and stops
Water band.
The utility model give full play to lightweight concrete layer from heavy and light, self-strength is high the features such as, be not only greatly lowered
Train and on cover the additional stress banketed and acted on foundation soil, moreover it is possible in conjunction with high-strength geotextile separation layer to top roadbed rise hold
Load effect, ground collapse, which is greatly lowered, influences the deformation in high-speed railway subgrade face.System is observed by pre-buried multi-point settlement
System is collapsed with Subgrade Subsidence early warning system energy real-time monitoring Karst Subgrade, solves high speed by reserved grouting behind shaft or drift lining repair system
Ballastless track roadbed ground collapse repairs difficult problem.
Referring to Fig.1, using the utility model it is a kind of have warning function high-speed railway Karst Subgrade construction restorative procedure,
It sequentially includes the following steps:
1. handling the first multi-point settlement observation system 41, the second multi-point settlement observation system by Subgrade Subsidence early warning system 42
The processing subgrade settlement data that system 42 is observed, early warning is issued when subgrade settlement, which is transfinited, to be worth；
2. into ground, slip casting carries out lifting reparation to roadbed by reserved grouting behind shaft or drift lining repair system, control grouting pressure is simultaneously
Subgrade deformation data are observed in real time, and are obtained in conjunction with the first multi-point settlement observation system 41, the second multi-point settlement observation system 42
Roadbed uplift deformation reparation value；
3. stopping slip casting when roadbed roadbed uplift deformation reparation value transfinites equal to subgrade settlement to be worth, passing through the first multiple spot
Settlement observation system 41, the second multi-point settlement observation system 42 acquire subgrade deformation data in real time and determine whether it is stable, such as
Then roadbed reparation terminates data stabilization.
The step 2. in grouting pressure and roadbed raising, lateral slip casting channel 31 and vertical 32 spacing of slip casting channel and
Filler is related with the infiltration coefficient of foundation soil, can determine by the way that field test and theoretical calculation are comprehensive.
The above is only using a kind of high-speed railway Karst Subgrade structure for having warning function of diagram illustrating the utility model
It makes and its some principles of restorative procedure, be not intended to shown in being confined to the utility model and the specific structure and be applicable in
In range, therefore all corresponding modifications that may be utilized and equivalent, belong to the applied patent of the utility model
Range.
Claims (6)
1. a kind of high-speed railway Karst Subgrade construction for having warning function, it is characterized in that: including the first high-strength geotextile separation layer
(11), lightweight concrete filling body (10) and bedding (20), the first high-strength geotextile separation layer (11) are layed on ground, lightweight
Concrete filling body (10) fills on the first high-strength geotextile separation layer (11), and bedding (20) is filled to be filled out in lightweight concrete
On building body (10)；Lightweight concrete filling body (10) bottom surface and top surface be respectively set the first multi-point settlement observation system (41),
Second multi-point settlement observation system (42)；Subgrade Subsidence early warning system (43) is set near roadbed slope foot, for acquiring and locating
It manages the first multi-point settlement observation system (41), the subgrade settlement data that the second multi-point settlement observation system (42) is observed, works as road
Base deformation has automatic early-warning when transfiniting trend；Reserved grouting behind shaft or drift lining repair system is set in lightweight concrete filling body (10).
2. a kind of high-speed railway Karst Subgrade construction for having warning function as described in claim 1, it is characterized in that: described reserved
Grouting behind shaft or drift lining repair system includes along the spaced lateral slip casting channel (31) of route extending direction, each transverse direction slip casting channel (31)
Vertical slip casting channel (32) is arranged in upper interval, and the lower end of vertical slip casting channel (32) is downward across water level line in ground (F).
3. a kind of high-speed railway Karst Subgrade construction for having warning function as described in claim 1, it is characterized in that: the lightweight
The lower part of concrete filling body (10) is laid with the second high-strength geotextile separation layer on the first multi-point settlement observation system (41)
(12)。
4. a kind of high-speed railway Karst Subgrade construction for having warning function as claimed in claim 1 or 3, it is characterized in that: described
First high-strength geotextile separation layer (11), the second high-strength geotextile separation layer (12) use design strength for 200kN/m~
The geotextiles of 600kN/m.
5. a kind of high-speed railway Karst Subgrade construction for having warning function as described in claim 1, it is characterized in that: the lightweight
Waterproof layer is arranged in the top surface of concrete filling body (10) and slope surface spraying, overlays one layer of anti-seepage geomembrane on waterproof layer outer surface.
6. a kind of high-speed railway Karst Subgrade construction for having warning function as described in claim 1, it is characterized in that: the lightweight
One of transverse expansion joint is arranged every certain length in concrete filling body (10), is filled out in transverse expansion joint using high-density foam plate
It fills, outer surface is laid with one layer of lateral back-adhering waterstop.
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| CN201721676551.5U CN208219326U (en) | 2017-12-06 | 2017-12-06 | A kind of high-speed railway Karst Subgrade construction having warning function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964843A (en) * | 2017-12-06 | 2018-04-27 | 中铁二院工程集团有限责任公司 | A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function |
| CN109722956A (en) * | 2019-01-23 | 2019-05-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway slip-casting lifting method and injecting paste material |
| CN109914161A (en) * | 2019-04-11 | 2019-06-21 | 中铁第六勘察设计院集团有限公司 | A kind of construction method of soft clay area high-speed railway filled-up ground |
| CN110725168A (en) * | 2019-10-31 | 2020-01-24 | 武汉比邻工程技术有限公司 | Ballastless track settlement correction integral lifting method utilizing series pipeline grouting technology |
| CN111395060A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Karst area existing cutting widened roadbed structure and design and construction method |
-
2017
- 2017-12-06 CN CN201721676551.5U patent/CN208219326U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964843A (en) * | 2017-12-06 | 2018-04-27 | 中铁二院工程集团有限责任公司 | A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function |
| CN109722956A (en) * | 2019-01-23 | 2019-05-07 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway slip-casting lifting method and injecting paste material |
| CN109722956B (en) * | 2019-01-23 | 2021-06-25 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Grouting lifting method and grouting material for high-speed railway |
| CN109914161A (en) * | 2019-04-11 | 2019-06-21 | 中铁第六勘察设计院集团有限公司 | A kind of construction method of soft clay area high-speed railway filled-up ground |
| CN110725168A (en) * | 2019-10-31 | 2020-01-24 | 武汉比邻工程技术有限公司 | Ballastless track settlement correction integral lifting method utilizing series pipeline grouting technology |
| CN111395060A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Karst area existing cutting widened roadbed structure and design and construction method |
| CN111395060B (en) * | 2020-03-24 | 2021-06-18 | 中铁二院工程集团有限责任公司 | Design and construction method for widening roadbed structure of existing cutting in karst area |
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