CN107964843A - A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function - Google Patents
A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function Download PDFInfo
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- CN107964843A CN107964843A CN201711273471.XA CN201711273471A CN107964843A CN 107964843 A CN107964843 A CN 107964843A CN 201711273471 A CN201711273471 A CN 201711273471A CN 107964843 A CN107964843 A CN 107964843A
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004746 geotextile Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 230000008439 repair process Effects 0.000 claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 239000004619 high density foam Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000007596 consolidation process Methods 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/08—Investigation of foundation soil in situ after finishing the foundation structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of high-speed railway Karst Subgrade construction and its restorative procedure with warning function, are faced with effectively to solve the single Karst Subgrade of conventional high rate railway and collapse that risk is high, consolidation effect is bad, solution cavity can not precise positioning, engineering cost be high and the technical barrier 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 is filled on the first high-strength geotextile separation layer, and bedding is filled on lightweight concrete filling body；Lightweight concrete filling body bottom surface and top surface set the first multi-point settlement observation system, the second multi-point settlement observation system respectively；Subgrade Subsidence early warning system is arranged near roadbed slope foot, for the subgrade settlement data for gathering 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 present invention relates to a kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function, available for railway
The fields such as engineering, highway engineering, especially suitable for karst area, goaf location high-speed railway subgrade engineering.
Background technology
Can lava stratum it is wide in China's distribution area, the spy such as Groundwater In The Karst Area enriches, karst hole irregular distribution
Property, builds the risk that high-speed railway subgrade faces karst collapse on it, conventional treatment measures be with pile slab structure by, or
Person carries out grouting and reinforcing to karst cavity.With pile slab structure by when, there are project cost is high, bored pile is difficult, design stake
It is long be not easy to determine, the complete bedrock thickness in stake bottom is not easy the problem such as definite；If simple carry out grouting and reinforcing by karst cavity, its
Effect is not easy the requirement for meeting high-speed railway particularly non-fragment orbit high-speed railway, and the reparation of ballastless track roadbed is very tired
Difficulty, once generation collapses suddenly or moderate finite deformation, will directly threaten the operation security of railway.The present invention proposes that one kind is easy to apply
Work, low cost, with warning function and be easy to repair subgrade structure, solve the above-mentioned difficulty that karst area roadbed is built well
Topic.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high-speed railway Karst Subgrade construction with warning function,
Faced with effectively to solve the single Karst Subgrade of conventional high rate railway and collapse that risk is high, consolidation effect is bad, solution cavity can not precisely be determined
Position, engineering cost be high and the secondary reparation technical barrier such as difficulty.
Technical solution used by the present invention solves above-mentioned technology is as follows：
A kind of high-speed railway Karst Subgrade construction of tool warning function of the present invention, it is characterized in that：Including high-strength geotextile
Separation layer, lightweight concrete filling body and bedding, the first high-strength geotextile separation layer are layed on ground, and lightweight concrete fills
Body is filled on the first high-strength geotextile separation layer, and bedding is filled on lightweight concrete filling body；Lightweight concrete is filled out
Building body bottom surface and top surface set the first multi-point settlement observation system, the second multi-point settlement observation system respectively；Subgrade Subsidence early warning
System is arranged near roadbed slope foot, for gathering and handling the first multi-point settlement observation system, the second multi-point settlement observation system
The observed subgrade settlement data of system, the automatic early-warning when subgrade deformation, which has, transfinites trend；Set in lightweight concrete filling body
Reserved grouting behind shaft or drift lining repair system.
Present invention invention another technical problem to be solved provides a kind of high-speed railway using above-mentioned tool warning function
The restorative procedure of Karst Subgrade construction, this method comprise the following steps：
1. the first multi-point settlement observation system, the second multi-point settlement observation system institute are handled by Subgrade Subsidence early warning system
The subgrade settlement data of observation, early warning is sent when value is transfinited in subgrade settlement；
2. into ground, slip casting carries out roadbed lifting reparation by reserved grouting behind shaft or drift lining repair system, control grouting pressure is simultaneously
With reference to the first multi-point settlement observation system, the second multi-point settlement observation system real-time monitored subgrade deformation data, and obtain roadbed
Uplift deformation reparation value；
3. when roadbed roadbed uplift deformation reparation value transfinites value equal to subgrade settlement, stop slip casting, pass through the first multiple spot
Settlement observation system, the second multi-point settlement observation system gather subgrade deformation data and judge whether it stablizes in real time, such as data
Stable then roadbed reparation terminates.
The invention has the advantages that give full play to lightweight concrete layer from heavy and light, self-strength is high the features such as, not only greatly
Amplitude reduction train and overlying are banketed the additional stress acted on foundation soil, moreover it is possible to reference to high-strength geotextile separation layer, to upper
Portion's roadbed plays carrying and cushioning effect, and deformation effect of the ground collapse to high-speed railway subgrade face is greatly lowered；By pre-buried
Multi-point settlement observation system and Subgrade Subsidence early warning system can monitor collapsing for Karst Subgrade in real time；Repaiied by reserved grouting behind shaft or drift lining
It is difficult that complex system solves the problems, such as that high speed ballastless track roadbed ground collapse is repaired.The construction and restorative procedure, which have, to be easy to apply
The advantages of work, low cost, high reliability, application prospect is extensive, great popularization.
Brief description of the drawings
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 present invention；
Fig. 2 is a kind of skiagraph for the high-speed railway Karst Subgrade construction for having warning function of the present invention.
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, high-strength geotextile separation layer 11, the second high-strength geotextile separation layer 12, base
Bed 20, horizontal slip casting passage 31, vertical slip casting passage 32, the first multi-point settlement observation system 41, the second multi-point settlement observation system
System 42, Subgrade Subsidence early warning system 43.
Embodiment
The present invention is further illustrated below by specific embodiment and with reference to attached drawing.
Referring to Figures 1 and 2, a kind of high-speed railway Karst Subgrade construction of tool warning function of the invention includes high-strength geotechnique
Cloth 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 is filled on the first high-strength geotextile separation layer 11, and bedding 20 is filled in lightweight concrete filling body 10
On.Lightweight concrete layer 10 is arranged at bedding 20 with lower portion, instead of Traditional foundations filler, be not only greatly lowered train and
Overlying is banketed the additional stress acted on ground, moreover it is possible to plays carrying to top roadbed, ground collapse pair is greatly lowered
The deformation effect in high-speed railway subgrade face.When karst foundation collapses, high-strength geotextile separation layer 11 has top roadbed
Carrying and cushioning effect, can prevent top roadbed from instantaneous collapse breaks occur.
Referring to Figures 1 and 2,10 bottom surface of lightweight concrete filling body and top surface set the first multi-point settlement observation system respectively
41st, the second multi-point settlement observation system 42.Subgrade Subsidence early warning system 42 is arranged near roadbed slope foot, for gathering 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 monitoring system of multinode, precision should reach 0.5mm.Subgrade Subsidence early warning system 43 can use existing with number
Word statistics, the after-treatment system of forecast function, and possess 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 repaiied
Complex system is included along the spaced horizontal slip casting passage 31 of circuit extending direction, is arranged at intervals on each transverse direction slip casting passage 31 perpendicular
To slip casting passage 32, the lower end of vertical slip casting passage 32 is downward across water level line F in ground.Horizontal slip casting passage 31 and vertical note
Slurry 32 spacing of passage is generally 3.5m or so, and the length of vertical slip casting passage 32 is by coating B thickness, foundation soil parameter and solution cavity
E distribution situations, which calculate, 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.
With reference to Fig. 1, the lower part of the lightweight concrete filling body 10 is laid with the first multi-point settlement observation system 41
Second high-strength geotextile separation layer 12.The high-strength geotextile separation layer 11, the second high-strength geotextile separation layer 12 are using design
Intensity is the geotextiles of 200kN/m~600kN/m.
Top surface and the slope surface spraying of the lightweight concrete filling body 10 set waterproof layer, add above on waterproof layer outer surface
Spread one layer of anti-seepage geomembrane.Waterproof layer can use high molecular material to spray, and thickness is generally 5mm.Anti-seepage geomembrane can use height
Density polyethylene (HDPE) anti-seepage geomembrane.The lightweight concrete filling body 10 sets one of transversal stretching every certain length
Seam, slit width are generally 2cm, are stopped in transverse expansion joint using the filling of high-density foam plate, the horizontal back sticking type of one layer of outer surface laying
Water band.
The present invention give full play to lightweight concrete layer from heavy and light, self-strength is high the features such as, train is not only greatly lowered
And overlying is banketed the additional stress acted on foundation soil, moreover it is possible to is played carrying to top roadbed with reference to high-strength geotextile separation layer and is made
With deformation effect of the ground collapse to high-speed railway subgrade face is greatly lowered.By pre-buried multi-point settlement observation system and
Subgrade Subsidence early warning system can monitor collapsing for Karst Subgrade in real time, be solved at a high speed without the tiny fragments of stone, coal, etc. by reserved grouting behind shaft or drift lining repair system
Track bed ground collapse repairs the problem of difficult.
With reference to Fig. 1, a kind of restorative procedure for the high-speed railway Karst Subgrade construction for having warning function of the present invention, including it is following
Step：
1. the first multi-point settlement observation system 41, the second multi-point settlement observation system are handled by Subgrade Subsidence early warning system 42
The processing subgrade settlement data that system 42 is observed, early warning is sent when value is transfinited in subgrade settlement；
2. into ground, slip casting carries out roadbed lifting reparation by reserved grouting behind shaft or drift lining repair system, control grouting pressure is simultaneously
With reference to the first multi-point settlement observation system 41,42 real-time monitored subgrade deformation data of the second multi-point settlement observation system, and obtain
Roadbed uplift deformation reparation value；
3. when roadbed roadbed uplift deformation reparation value transfinites value equal to subgrade settlement, stop slip casting, pass through the first multiple spot
Settlement observation system 41, the second multi-point settlement observation system 42 gather subgrade deformation data and judge whether it stablizes in real time, such as
Then roadbed reparation terminates data stabilization.
The step 2. in grouting pressure and roadbed raising, horizontal slip casting passage 31 and vertical 32 spacing of slip casting passage and
Filler is related with the infiltration coefficient of foundation soil, can be integrated and determined by field test and theoretical calculation.
The above simply using illustrate the present invention it is a kind of have warning function high-speed railway Karst Subgrade construction and
Some principles of its restorative procedure, are not intended to the present invention being confined in shown and described concrete structure and the scope of application,
Therefore every corresponding modification for being possible to be utilized and equivalent, belong to the apllied the scope of the claims of the present invention.
Claims (7)
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), high-strength geotextile separation layer (11) are layed on ground, lightweight coagulation
Native filling body (10) is filled on high-strength geotextile separation layer (11), and bedding (20) is filled in lightweight concrete filling body (10)
On；Lightweight concrete filling body (10) bottom surface and top surface set the first multi-point settlement observation system (41), the second multiple spot respectively
Settlement observation system (42)；Subgrade Subsidence early warning system (42) is arranged near roadbed slope foot, for gathering and handling more than first
The subgrade settlement data that point settlement observation system (41), the second multi-point settlement observation system (42) are observed, when subgrade deformation has
The automatic early-warning during trend that transfinites；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 claimed in claim 1, it is characterized in that：It is described reserved
Grouting behind shaft or drift lining repair system is included along the spaced horizontal slip casting passage (31) of circuit extending direction, each transverse direction slip casting passage (31)
Upper to be arranged at intervals vertical slip casting passage (32), the lower end of vertical slip casting passage (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 claimed 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 of tool warning function as described in claim 1 or 3, it is characterized in that：It is described
High-strength geotextile separation layer (11), the second high-strength geotextile separation layer (12) use design strength as 200kN/m~600kN/m's
Geotextiles.
5. a kind of high-speed railway Karst Subgrade construction for having warning function as claimed in claim 1, it is characterized in that：The lightweight
Top surface and the slope surface spraying of concrete filling body (10) set waterproof layer, and one layer of antiseepage geotechnique is overlayed above on waterproof layer outer surface
Film.
6. a kind of high-speed railway Karst Subgrade construction for having warning function as claimed in claim 1, it is characterized in that：The lightweight
Concrete filling body (10) sets one of transverse expansion joint every certain length, is filled out in transverse expansion joint using high-density foam plate
Fill, outer surface is laid with one layer of horizontal back-adhering waterstop.
7. using a kind of restorative procedure for the high-speed railway Karst Subgrade construction for having warning function as claimed in claim 1, including
Following steps：
1. the first multi-point settlement observation system (41), the second multi-point settlement observation system are handled by Subgrade Subsidence early warning system (42)
The processing subgrade settlement data that system (42) is observed, early warning is sent when value is transfinited in subgrade settlement；
2. slip casting carries out lifting reparation to roadbed into ground by reserved grouting behind shaft or drift lining repair system, control grouting pressure and combine
First multi-point settlement observation system (41), second multi-point settlement observation system (42) real-time monitored subgrade deformation data, and obtain
Roadbed uplift deformation reparation value；
3. when roadbed roadbed uplift deformation reparation value transfinites value equal to subgrade settlement, stop slip casting, pass through the first multi-point settlement
Observation system (41), the second multi-point settlement observation system (42) gather subgrade deformation data and judge whether it stablizes in real time, such as
Then roadbed reparation terminates data stabilization.
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| CN201711273471.XA CN107964843A (en) | 2017-12-06 | 2017-12-06 | A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function |
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| CN201711273471.XA CN107964843A (en) | 2017-12-06 | 2017-12-06 | A kind of high-speed railway Karst Subgrade construction and its restorative procedure for having warning function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518728A (en) * | 2018-12-11 | 2019-03-26 | 河海大学 | A kind of prevention and treatment intake tower Ground Settlement causes the facility and method of geomembrane destruction |
| CN109750658A (en) * | 2018-12-28 | 2019-05-14 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Slip-casting control method and grouting system |
| CN110616602A (en) * | 2019-09-17 | 2019-12-27 | 西安建筑科技大学 | Sedimentation control device and method for construction of pipe jacking and downward passing existing operation railway |
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