CN206111218U - Rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system - Google Patents
Rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system Download PDFInfo
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- CN206111218U CN206111218U CN201621095456.1U CN201621095456U CN206111218U CN 206111218 U CN206111218 U CN 206111218U CN 201621095456 U CN201621095456 U CN 201621095456U CN 206111218 U CN206111218 U CN 206111218U
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Abstract
The utility model discloses a rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system, rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system includes: the bottom is sealed the horizontal plate and is freezed the curtain, the inside of horizontal plate setting in the excavation scope is sealed to the bottom, the bottom is sealed the horizontal plate and is included a plurality of first holes of freezing to resist the water pressure of excavation scope lower part, it is in to freeze curtain set around the excavation scope, it centers on including arranging in proper order to freeze the curtain the second of excavation scope setting freezes the hole to resist the water and soil pressure around the excavation scope.
Description
Technical field
The utility model is related to stratum and excavates technical field of construction, the more particularly to buried tunneling car of rich water sand-pebble layer
The basin shape stood freezes water-stopping system.
Background technology
With the development of China's economic, the quickening of urbanization process, urban population is more and more, and urban traffic pressure is dashed forward
It is aobvious, it is to tackle the increasing city of this problem to start to build Urban Underground track traffic.But with urban underground space more closely
The Persisting exploitation in year, has following deeper subsurface Mining Problems：
(1) ground construction environment is complicated
The ground in metro station construction region is main roads, and close to overpass, earth's surface pipeline is more, to stratum settlement
Restriction have high demands, so in construction specific aim measure should be taken, reduce impact of the work progress to surrounding environment, it is ensured that earth's surface
The safety of pipeline and building；
(2) water-bearing layer difficult treatment
According to hydrogeologic condition, the water table aquifer difference in distribution in the range of metro station construction is larger, aqueous abundant, and car
Stand bottom impervious stratum buried depth it is deeper, geological conditions fail to understand.So in construction, to the treatment measures containing diving stratum,
Safety to constructing is particularly important；
(3) ground does not possess execution conditions
Due to the restriction and the presence of overpass of traffic above-ground, ground does not possess execution conditions, when selecting construction, should
Consider the restriction of the execution conditions on ground；
(4) work progress environment limits big
Because ground does not possess execution conditions, all of construction needs to provide construction environment after pilot drive, so
Work progress is limited greatly by environment, during the tissue of the selection of construction method and work progress, needs to consider construction environment pair
The restriction of construction method；
It is desirable to the basin shape for having a kind of buried Station of rich water sand-pebble layer freezes water-stopping system and can form jelly
Hydraulic connection within and outside the region is excavated in knot body isolation, reaches sealing purpose.
Utility model content
The purpose of this utility model is that the basin shape for providing a kind of buried Station of rich water sand-pebble layer freezes sealing
System is overcoming the above-mentioned problems in the prior art.
For achieving the above object, a kind of basin shape of the buried Station of rich water sand-pebble layer of the utility model offer is freezed
Water-stopping system, it is characterised in that include：Bottom water shutoff flat board and freezing curtain, the bottom water shutoff flat board is arranged on excavation model
The inside enclosed, the bottom water shutoff flat board includes multiple first freezing holes, to resist the water pressure for excavating scope bottom；The jelly
Knot curtain is arranged on around the excavation scope, and the freezing curtain includes being arranged in order what is arranged around the excavation scope
Second freezing hole, to resist the Water And Earth Pressures around excavation scope.
Preferably, vertical freezing pipe, the frost wall of the vertical freezing pipe are vertically arranged below first freezing hole
Thickness is 3m, and the spacing between the vertical freezing pipe is 2.5m, and the array pitch between the vertical freezing pipe is 2m.
Preferably, periphery freezing pipe is set in second freezing hole, and the Frozen wall thickness of the periphery freezing pipe is 2m,
Spacing between the periphery freezing pipe is 1.5m.
Preferably, the bottom water shutoff flat board forms water shutoff flat board using partial freezing's method in the bottom for excavating scope.
The utility model provides a kind of basin shape of the buried Station of rich water sand-pebble layer and freezes water-stopping system, passes through
The basin shape of the buried Station of rich water sand-pebble layer of the present utility model freezes water-stopping system can be effectively prevented excavation area
Domain water body flow, the border ring freezing curtain and bottom water shutoff flat board in the utility model is collectively forming the construction area of closing
Domain, make the excavation and station structure construction of the soil body is all carried out in the construction area of closing.
Description of the drawings
Fig. 1 is the generalized section that basin shape freezes freezing pipe in water-stopping system.
Fig. 2 is that periphery freezes plane of arrangement schematic diagram in pile tube.
Specific embodiment
Purpose, technical scheme and advantage to implement the utility model is clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, is further described in more detail to the technical scheme in the utility model embodiment.In the accompanying drawings, ad initio
Same or similar element is represented to same or similar label eventually or the element with same or like function.Described reality
It is a part of embodiment of the utility model to apply example, rather than the embodiment of whole.Below with reference to the embodiment of Description of Drawings
It is exemplary, it is intended to for explaining the utility model, and it is not intended that to restriction of the present utility model.It is new based on this practicality
Embodiment in type, the every other enforcement that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of the utility model protection.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
The restriction of novel protected scope.
In the broad embodiment of the utility model one, a kind of basin shape of the buried Station of rich water sand-pebble layer is freezed to stop
Water system, it is characterised in that include：Bottom water shutoff flat board and freezing curtain, the bottom water shutoff flat board is arranged on excavation scope
Inside, the bottom water shutoff flat board includes multiple first freezing holes, to resist the water pressure for excavating scope bottom；It is described to freeze
Curtain is arranged on around the excavation scope, and the freezing curtain includes being arranged in order the arranged around the excavation scope
Two freezing holes, to resist the Water And Earth Pressures around excavation scope.
The basin shape of the buried Station of rich water sand-pebble layer freezes water-stopping system to be included：Bottom water shutoff flat board and freeze curtain
Curtain, the bottom water shutoff flat board is arranged on the inside for excavating scope, and the bottom water shutoff flat board includes multiple first freezing holes, with
The water pressure of scope bottom is excavated in opposing；The freezing curtain is arranged on around the excavation scope, the freezing curtain bag
Include and be arranged in order the second freezing hole arranged around the excavation scope, to resist the Water And Earth Pressures around excavation scope.
As shown in Figure 1-2, vertical freezing pipe 1 is vertically arranged below first freezing hole, the vertical freezing pipe 1
Frozen wall thickness is 3m, and the spacing between the vertical freezing pipe 1 is 2.5m, and the array pitch between the vertical freezing pipe 1 is 2m.
As shown in Figure 1-2, periphery freezing pipe 2 is set in second freezing hole, and the periphery freezing pipe 2 freezes wall thickness
Spend for 2m, the spacing between the periphery freezing pipe 2 is 1.5m.
The bottom water shutoff flat board forms water shutoff flat board using partial freezing's method in the bottom for excavating scope.
The periphery freezing pipe 2 is arranged in skirt piles 3, and when the skirt piles 3 are constructed, the periphery freezing pipe 2 is with described
The steel reinforcement cage of skirt piles 3 is transferred to around the excavation scope.
No. 19 line Bei Taipingzhuangs station geological conditions：
1st, stratum is followed successively by from top to bottom in the range of station：Silty clay 4. layer, Extra-fine sand 4. 3, cobble circle gravel 5., silty
Clay 6., 6. 2 layers of silt, detail sand 6. 3,7. 2 layers of Extra-fine sand, cobble 7. layer, cobble 9. layer, 9. 2 layers of Extra-fine sand.Vault is located at
3. 3 layers of Extra-fine sand, medium coarse sand 4. 4, base plate is located at cobble 9. layer, infiltration coefficient 150m/d.
2nd, perched water buried depth 2.5m～5.8m, dive under water (two) buried depth 11.2m～14.64m, at the vault of station, dives
Water (three) buried depth 26.6m～30.5m, positioned at station base plate top 7m～11m.
For No. 19 line stations, dive under water (two) buried depth 14.5m, and positioned at station vault, dive under water (three) buried depth 26.7m,
Positioned at station base plate top 11.4m.After drilling is taken by hydrophobic (three) stratum to diving of diving (two), at the buried depth of (three) of diving under water
In station is minus two layers below plate, it is possible to using commonsense method directly construct to station it is minus two layers in plate.
The key link of station construction is the excavation and structure construction on stratum below plate in minus two floor in No. 19 line stations, we
Case is mainly designed to solve the problems, such as construct in the stratum in minus two floor in No. 19 line stations below plate, i.e., in (three) stratum containing diving
Excavation and station construction, specific work progress carries out on plate in minus two layers for completing, special instruction, practice of construction
In, if it find that diving (three) depth shallower, using commonsense method cannot construct to station it is minus two layers in plate when, can construct
Extreme lower position, increase construction it is interim in plate, carry out construction freezing method reinforcing to separate underground water on interim middle plate, subsequently
Processing method it is essentially identical.
In order to process No. 19 19 lines (three) stratum containing diving, meet station and excavate and structure construction, using without water barrier " basin
Shape " freezes sealing scheme：
When the complete continuous water barrier of nothing in stratum or deeper water barrier, vertical frozen can be laid in excavated section
Pipe, using partial freezing's technology " artificial water barrier " is formed, and surrounding lays freezing pipe and forms freezing curtain, freezing curtain along skirt piles
Hydraulic connection within and outside the region is excavated with " basin shape " freezes body isolation of " artificial water barrier " composition, sealing purpose is reached.
I.e. on plate in minus two floor in No. 19 line stations, freezing hole is arranged, envelope is formed around whole excavation construction region
The freezing curtain for closing, in the case where the water shutoff and maintenance of freezing curtain are acted on, carries out the excavation and structure construction of the soil body.
All of freezing hole is constructed in minus two layers AT STATION on plate, advance when skirt piles are constructed in the border for excavating scope
Arrangement one encloses freezing hole, forms the freezing curtain of ring to resist the Water And Earth Pressures of surrounding.It is close in the inside arrangement for excavating scope
The freezing hole of cloth, forms water shutoff flat board (having some strength), under opposing using partial freezing's method in the bottom for excavating scope
The water pressure in portion.Border ring freezing curtain and bottom water shutoff flat board are collectively forming the construction area of closing, the excavation of the soil body and
Station structure construction is all carried out in the construction area of closing.
No. 19 lines dive under water three-level line under minus two floor base plate, accordingly, it would be desirable to construct on minus two layers of base plate vertically freeze
Knot pipe (calling middle plate freezing pipe in the following text), Frozen wall thickness takes 3m, bears and backfill under Tipple Bottom plate 1m thickness plain concrete cushion layers, and middle plate freezes
Length of tube is 12.3m, and it is 22.3m that periphery freezes length of tube, is that the duration of saving engineering and cost can be by periphery layout of freezing pipes
In skirt piles, lagging edge pile driving construction is carried out simultaneously, saves drilling time and expense.
Solidification point：Actively -26 DEG C to -30 DEG C of freezing period brine temp, safeguards freezing period brine temp -25 DEG C to -28
℃.- 10 DEG C of frost wall mean temperature.Periphery Frozen wall thickness takes 2m, and middle plate freezes tube pitch control in 2.5m, and array pitch control exists
2m。
Cloth hole scheme in stake：Periphery freezes using single vertical cloth hole, and freezing pipe lagging edge pile cages are transferred to specific bit
Put, freeze tube pitch 1.5m, Frozen wall thickness takes 2m, when frozen soil column diameter develops into 2.2m, Frozen wall thickness reaches design
Require.
Freeze pipe size：It is 159mm × 5mm that periphery freezes pipe size, and total length is freezed, and middle plate freezes pipe size for 127mm
× 5mm, partial freezing.
Because construction area area is larger, the construction period is long, for convenience organizing construction, by the distributing position of transverse passage-way,
Whole construction area is divided into five sections (L5, L6 spacing is larger, is divided to two sections of constructions) along station length direction, transverse passage-way both sides adopt
It is complete to freeze (i.e. single freezing pipe does not adopt partial freezing's mode) deeply, the freezing curtain of closing is formed in segmentation portion, to facilitate group
Knit excavation construction.Sequential organization construction between different sections, it is ensured that excavate the continuity with structure construction.Whole boundary of works area is divided into
Five construction segmentations, it is contemplated that construction infection each other, segmentation one and segmentation five can start simultaneously at construction, then carry out
Segmentation two and the construction of segmentation four, finally carry out being segmented three construction.Respectively freeze segmentation internal, the freezing speed of middle freezing hole
Hurry up, excavation construction can be excavated from centre to surrounding, in advance excavation construction, save the construction period.
It is last it is to be noted that：Above example is only illustrating the technical solution of the utility model, rather than it is limited
System.Although being described in detail to the utility model with reference to the foregoing embodiments, one of ordinary skill in the art should manage
Solution：It still can modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make each embodiment of essence disengaging the utility model of appropriate technical solution
The spirit and scope of technical scheme.
Claims (4)
1. the basin shape of the buried Station of rich water sand-pebble layer freezes water-stopping system, it is characterised in that include：Bottom water shutoff is put down
Plate and freezing curtain, the bottom water shutoff flat board is arranged on the inside for excavating scope, and the bottom water shutoff flat board includes multiple the
One freezing hole, to resist the water pressure for excavating scope bottom；The freezing curtain is arranged on around the excavation scope, described
Freezing curtain includes being arranged in order the second freezing hole arranged around the excavation scope, to resist the water and soil around excavation scope
Pressure.
2. the basin shape of the buried Station of rich water sand-pebble layer as claimed in claim 1 freezes water-stopping system, and its feature exists
In, vertical freezing pipe is vertically arranged below first freezing hole, the Frozen wall thickness of the vertical freezing pipe is 3m, described
Vertically the spacing between freezing pipe is 2.5m, and the array pitch between the vertical freezing pipe is 2m.
3. the basin shape of the buried Station of rich water sand-pebble layer as claimed in claim 1 freezes water-stopping system, and its feature exists
In, periphery freezing pipe is set in second freezing hole, the Frozen wall thickness of the periphery freezing pipe is 2m, and the periphery freezes
Spacing between pipe is 1.5m.
4. the basin shape of the buried Station of rich water sand-pebble layer as claimed in claim 1 freezes water-stopping system, and its feature exists
In the bottom water shutoff flat board forms water shutoff flat board using partial freezing's method in the bottom for excavating scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095456.1U CN206111218U (en) | 2016-09-30 | 2016-09-30 | Rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095456.1U CN206111218U (en) | 2016-09-30 | 2016-09-30 | Rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system |
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| Publication Number | Publication Date |
|---|---|
| CN206111218U true CN206111218U (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621095456.1U Active CN206111218U (en) | 2016-09-30 | 2016-09-30 | Rich water sand cobble stratum buries basin shape of secretly digging station deeply and freezes stagnant water system |
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| Country | Link |
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| CN (1) | CN206111218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401618A (en) * | 2016-09-30 | 2017-02-15 | 北京城建集团有限责任公司 | Basin-shaped freezing water-stop system for water-enriched sandy gravel stratum deep-buried metro station |
| CN109915173A (en) * | 2019-03-22 | 2019-06-21 | 北京城建集团有限责任公司 | A kind of buried pipe curtain support construction and pilot tunnel water storage system |
-
2016
- 2016-09-30 CN CN201621095456.1U patent/CN206111218U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401618A (en) * | 2016-09-30 | 2017-02-15 | 北京城建集团有限责任公司 | Basin-shaped freezing water-stop system for water-enriched sandy gravel stratum deep-buried metro station |
| CN109915173A (en) * | 2019-03-22 | 2019-06-21 | 北京城建集团有限责任公司 | A kind of buried pipe curtain support construction and pilot tunnel water storage system |
| CN109915173B (en) * | 2019-03-22 | 2023-11-21 | 北京城建集团有限责任公司 | Underground pipe curtain supporting structure and pilot tunnel water storage system |
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