CN207295348U - Railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district - Google Patents
Railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district Download PDFInfo
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- CN207295348U CN207295348U CN201721072539.3U CN201721072539U CN207295348U CN 207295348 U CN207295348 U CN 207295348U CN 201721072539 U CN201721072539 U CN 201721072539U CN 207295348 U CN207295348 U CN 207295348U
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Abstract
A kind of I grade of potable water source district railway karst ground treatment anti-pollution structure nearby is the utility model is related to, the very sensitive location of environment near I grade of potable water source district, karst foundation is handled using the engineering structure being made of concrete component；Railway rail level is above the ground level the location of 4m, and karst foundation is handled using the bridge structure being made of concrete component abutment, bridge pier and beam；The distance that railway rail level is above the ground level is less than 4m or railway rail level is less than the location on ground, and karst foundation is handled using the pile slab structure being made of concrete member steel bar concrete-pile and armoured concrete slab.The utility model has carried out effective processing to the railway karst foundation near I grade of potable water source district, and the operating mode for being directed to different rail level height employs the processing structure of two kinds of forms, it can not only prevent influence of the karst region ground collapse to railway, it is thus also avoided that the very sensitive location of environment uses pollution of the pouring water into borehole mud conditioning mode to drinking water source near I grade of potable water source district.
Description
Technical field
The utility model belongs to karst area road building technology field, and in particular to railway near a kind of I grade of potable water source district
Karst ground treatment anti-pollution structure.
Background technology
Karst region railway bed ground collapse, interrupts railways train operation by producing, the serious consequence of train is overturned, for this reason, adopting
With drill-pouring cement mortar, cement mortar hardening calculus, ground collapse is prevented in the method for cement mortar calculus filling solution cavity.The ratio of mud
1:When the presetting period of 1 cement mortar is about 15 small, underground karst cavity, solution crack development location are run into, subterranean communication is good, and cement mortar is suitable
Karst corridor is lost in tens to hundreds of meters beyond the scope for needing injecting treatment.The cement that slip casting uses contains Cr VI, water ash
Than 1:The syneresis rate of 1 cement mortar is about 30 ~ 40%.Foundation《Water environment quality standard》（GB3838-2002）, sample examination,
The content of 6-valence Cr ions of Water-Seepage is 9 times of III class standard of surface water environment quality；The Ph values 11.97 of Water-Seepage, ground
III class standard of table quality of water environment is 6 ~ 9.The bleed of cement mortar carries Cr VI and is in strong basicity.
When railway bed is located near I grade of potable water source district of karst region, I grade of potable water source district is underground water in the region
Minimum draining area, more than this elevation, surface water, the underground water of roadbed and adjacent area are finally drained in I grade of drinking water
Source.Pouring water into borehole mud conditioning karst foundation is such as used, the cement mortar and bleed of loss certainly will be drained in I grade of drinking water source
Ground, polluted-water.The very sensitive location of environment near I grade of potable water source district, pouring water into borehole mud conditioning karst foundation
Method is infeasible.
Utility model content
The purpose of this utility model is to provide a kind of I grade of potable water source district anti-pollution knot of railway karst ground treatment nearby
Structure, it is infeasible to solve the very sensitive location of environment, pouring water into borehole mud conditioning karst foundation near I grade of potable water source district
The problem of.
Technical solution is used by the utility model：
Railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district, it is characterised in that：
The structure is made of concrete component, including railway rail level is above the ground level the bridge structure and rail in 4m locations
The distance that face is above the ground level is less than the pile slab structure of 4m or railway rail level section below ground；
Railway rail level is above the ground level the location of 4m, using the bridge knot being made of concrete component abutment, bridge pier and beam
Structure handles karst foundation；
The distance that railway rail level is above the ground level is less than 4m or railway rail level is less than the location on ground, using by concrete component
The pile slab structure processing karst foundation of reinforced concrete pile and armoured concrete slab composition.
In the bridge structure for handling karst foundation, abutment is located at the forward and backward end of structure, and bridge pier is located at the middle part of structure,
Beam is built between abutment and bridge pier；
Abutment and bridge pier avoid fairly large solution cavity, with the more fairly large solution cavity of girder span.
In the pile slab structure for handling karst foundation, reinforced concrete pile is arranged in row, and armoured concrete slab is built in reinforcing bar
Concrete-pile stake top；
2m under the solution cavity bottom plate of reinforced concrete pile influence base stabilization.
The utility model has the following advantages：
The utility model has carried out the railway karst foundation near I grade of potable water source district effective processing, and for not
Operating mode with rail level height employs the processing structure of two kinds of forms, can not only prevent shadow of the karst region ground collapse to railway
Ring, it is thus also avoided that the very sensitive location of environment uses pouring water into borehole mud conditioning mode to drink near I grade of potable water source district
With the pollution at water source.
Brief description of the drawings
Fig. 1 bridge structures handle karst foundation skiagraph.
Fig. 2 pile slab structures handle karst foundation cross-sectional view.
Fig. 3 pile slab structure reinforced concrete pile plane of arrangement figures.
Fig. 4 pile slab structures processing karst foundation indulges face figure figure.
In figure, 1- abutments, 2- bridge piers, 3- beams, 4- armoured concrete slabs, 5- reinforced concrete piles.
Embodiment
The utility model is described in detail with reference to embodiment.
A kind of I grade of potable water source district railway karst ground treatment anti-pollution structure nearby is the utility model is related to, in I grade of drink
With the very sensitive location of environment near water head site, to avoid polluted source, rock must not be handled using pouring water into borehole mud mode
Molten ground, for this reason, handling karst foundation using the engineering structure being made of concrete component.
Railway rail level is above the ground level the location of 4m, using the bridge being made of concrete component abutment 1, bridge pier 2 and beam 3
Pattern handling karst foundation.Abutment 1 is located at the forward and backward end of structure, and bridge pier 2 is located at the middle part of structure, and beam 3 is built in abutment 1
Between bridge pier 2.The arrangement of abutment 1 and bridge pier 2 should avoid fairly large solution cavity, and fairly large solution cavity is crossed over bridge 3.
The distance that railway rail level is above the ground level is less than 4m or railway rail level is less than the location on ground, using by concrete member steel bar coagulation
The pile slab structure processing karst foundation that native stake 5 and armoured concrete slab 4 form.Reinforced concrete pile 5 is in row arrangement, reinforced concrete
Native plate 4 is built in 5 stake top of reinforced concrete pile.Reinforced concrete pile 5 stretches into 2m under the solution cavity bottom plate for influencing base stabilization.
Embodiment：
Wildcat River Reservoir is I grade of water head site of Xianfeng County.Normal DK46+923.96 ~ DK47+146.8 sections of Guizhou Province is away from wildcat
The clear water river of River Reservoir upstream about 100 ~ 130m.DK46+923.96 ~ DK47+146.8 sections of original design is subgrade engineering, is used
Pouring water into borehole mud conditioning karst foundation.Afterwards to prevent cement mortar from polluting I grade of potable water source district, bridge structure and peg board knot are used instead
Structure handles karst foundation.With reference to the normal railway DK46+923.96 ~ DK47+146.8 sections of karst treatment engineerings in Guizhou Province, difference
Introduce the utility model bridge structure and the specific implementation steps of pile slab structure：
Bridge structure（DK46+923.96~DK47+000.6）：
As shown in Figure 1, the ultimate range that railway rail level is above the ground level is 17m, bridge structure processing karst foundation is used instead.
Step 1：According to the prospecting data of early period, the scope that solution cavity is distributed along line midline karst foundation is determined；
Step 2：The scope being distributed according to solution cavity, reasonable Arrangement abutment 1 and bridge pier 2.The cloth of abutment 1 and bridge pier 2 in principle
Fairly large solution cavity should be avoided by putting, and cross over fairly large solution cavity as much as possible with bridge 3；
Step 3：Stratum under abutment 1, bridge pier 2 is drilled, without solution cavity is found, abutment 1, bridge pier 2 are using bright
Dig basis；
Step 4：Into the design of cross girders 3；
Step 5：By abutment 1 and bridge pier 2, the orders such as 3 of setting a roof beam in place, implement I grade of antipollution bridge structure of potable water source district.
Pile slab structure（DK47+000.6~DK47+146.8）：
This section connects with I grade of antipollution bridge structure of potable water source district, and the distance that railway rail level is above the ground level is less than 4m
Or railway rail level is less than ground, pile slab structure processing karst foundation is used instead.
Step 1：According to processing paragraph, the laying of reinforced concrete pile 4 is carried out.As shown in Fig. 2, along in circuit transverse direction, steel
Rib concrete pile 4 lays 3, and roadbed center lays 1, and left and right side respectively lays 1 away from center 5.5m.As shown in figure 3, along the line
On the longitudinal direction of road, reinforced concrete pile 4 is laid by the row of left, center, right three, spacing 7m.
Step 2：Prospecting drilling is laid by the position of three row reinforced concrete pile of left, center, right, the prospecting drilling of three row can
Lay every stake, to find out the distribution of solution cavity under substrate, and provided for the design of reinforced concrete pile.
Step 3：According to the distribution of solution cavity, the stability of ground is judged.DK47+000.6~DK47+025.8 sections of subsurfaces
There is the solution cavity of height 0.9m at 21 m, Upper Plate of Karst Cave thickness with solution cavity highly than being more than 5, stablize, and is not required to handle by karst foundation.Such as
Shown in Fig. 4, it be covered karst that DK47+025.8~DK47+146.8 sections most of, and Upper Plate of Karst Cave thickness and solution cavity height ratio
Less than 5, karst foundation is unstable, pile slab structure need to be used to handle.
Step 4：The design of reinforced concrete pile is carried out, is influenced as shown in figure 4, the stake bottom of reinforced concrete pile should be less than
2m under the solution cavity bottom plate of base stabilization.
Step 5：Carry out the design of armoured concrete slab.
Step 6：Laid by excavating cut slope to armoured concrete slab ground, cast-in-situ bored pile, drilling is reconnoitred, determines peg board
Process range, cast-in-situ bored pile design, armoured concrete slab design, construction reinforced bar concrete-pile, construction reinforced bar concrete slab etc.
Sequentially, I grade of antipollution pile slab structure of potable water source district is implemented.
The very sensitive location of environment near I grade of potable water source district, the method for pouring water into borehole mud conditioning karst foundation
Infeasible, the utility model selects bridge structure and pile slab structure processing karst foundation, and engineering is formed using by concrete component
Pattern handling karst foundation, has achieveed the purpose that to prevent karst region ground collapse from influencing railway and stablizing, and avoids using drilling
Pollution of the cement injection processing mode to drinking water source.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and any equivalent conversion taken technical solutions of the utility model, are the claim institute of the utility model
Cover.
Claims (3)
- A kind of 1. railway karst ground treatment anti-pollution structure near I grade of potable water source district, it is characterised in that：The structure is made of concrete component, including railway rail level be above the ground level 4m locations bridge structure and railway rail level it is high Distance in ground is less than the pile slab structure of 4m or railway rail level section below ground；Railway rail level is above the ground level the location of 4m, using by concrete component abutment（1）, bridge pier（2）And beam（3）The bridge of composition Girder construction handles karst foundation；The distance that railway rail level is above the ground level is less than 4m or railway rail level is less than the location on ground, using by concrete member steel bar Concrete-pile（5）And armoured concrete slab（4）The pile slab structure processing karst foundation of composition.
- 2. railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district according to claim 1, it is special Sign is：In the bridge structure for handling karst foundation, abutment（1）Positioned at the forward and backward end of structure, bridge pier（2）In structure Portion, beam（3）Build in abutment（1）With bridge pier（2）Between；Abutment（1）And bridge pier（2）Fairly large solution cavity is avoided, with beam（3）Across fairly large solution cavity.
- 3. railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district according to claim 1, it is special Sign is：In the pile slab structure for handling karst foundation, reinforced concrete pile（5）Arranged in row, armoured concrete slab（4）Build in steel Rib concrete pile（5）Stake top；Reinforced concrete pile（5）Influence 2m under the solution cavity bottom plate of base stabilization.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721072539.3U CN207295348U (en) | 2017-08-25 | 2017-08-25 | Railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district |
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| CN201721072539.3U CN207295348U (en) | 2017-08-25 | 2017-08-25 | Railway karst ground treatment anti-pollution structure near a kind of I grade of potable water source district |
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| CN207295348U true CN207295348U (en) | 2018-05-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460791A (en) * | 2017-08-25 | 2017-12-12 | 中铁第勘察设计院集团有限公司 | Railway karst ground treatment Antipollution method and structure near I grade of potable water source district |
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2017
- 2017-08-25 CN CN201721072539.3U patent/CN207295348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460791A (en) * | 2017-08-25 | 2017-12-12 | 中铁第勘察设计院集团有限公司 | Railway karst ground treatment Antipollution method and structure near I grade of potable water source district |
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