CN208183720U - A kind of frost damage prevention water seepage mechanism - Google Patents
A kind of frost damage prevention water seepage mechanism Download PDFInfo
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- CN208183720U CN208183720U CN201820712825.XU CN201820712825U CN208183720U CN 208183720 U CN208183720 U CN 208183720U CN 201820712825 U CN201820712825 U CN 201820712825U CN 208183720 U CN208183720 U CN 208183720U
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- coarse sand
- frost
- rubble
- filter layer
- water seepage
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Abstract
The utility model relates to a kind of frost damage prevention water seepage mechanisms, the water seepage mechanism is set to frost penetration (9) below and has 1% ~ 2% longitudinal slope than drop, the cylindrical structure that intermediate rubble pervious bed, outer layer medium coarse sand filter layer wrap up is realized including rubble pervious bed (6), medium coarse sand filter layer (4), supporting course (2) and mesh drainpipe, and using two layers of permeable geotextiles.Effectively, swimmingly ground can be seeped under frost line under water, reduce the seepage in underground of entire foundation region, effectively prevent the generation of freeze injury；Seepage in foundation seepage can be made along channel Self-discharged；Water seepage mechanism periphery soil particle can be effectively prevent to enter french drain, prevent french drain from blocking, and then french drain can be made permanently to use.It in addition, the utility model construction method step is simple, can complete within a short period of time, not only saved the time in this way but also save engineering cost, can also be applied in some fill foundation engineering foundation drainage systems, be worth a wide range of and promote.
Description
Technical field
The utility model relates to frost heave foundation treatment technology processing technology field more particularly to a kind of infiltration of frost damage prevention are blind
Ditch.
Background technique
With the rapid enhancing of country of China synthesized economic strength, long distance oil pipeline plays increasingly in economic construction
Important role just has a plurality of pipeline to pass through, such as oil gas of the mating building as long distance oil pipeline in northwest China area
The light constructions object such as pipe station also occurs with a large amount of.But in the extensive frozen soil layer of northwest China Area distribution, due to conduct
The frozen soil layer moisture content of ground is larger, and foundation soil impeded drainage, leads to that poly- ice effect can occur in freezing process, can lead
Determinator for soil volume is caused, frost-heave force is generated, basis and its superstructure is made to be deformed and cause frost heaving failure, it especially can be to frozen soil
The light constructions object such as Oil/Gas Pipe station causes crack, inclination, even collapses on layer, seriously affects the normal use at Oil/Gas Pipe station, gives
The people bring great property loss.
By its ground moisture content of weakening and foundation soil mainly is promoted for the processing of the frost heave ground of frozen soil layer
Mechanical property achievees the purpose that prevention frost damage.However, the hair with regard to how to prevent by dealing carefully with underground water frost heave disaster
It is raw, it is always exactly a problem for perplexing engineering construction.Therefore, long-term effectively Ground Treatment problem of groundwater for long oil transportation
The construction of pipeline has great significance.
According to previous case history, the processing method that gutter is combined with french drain can be used in roadbed freeze-harm processing,
It has certain frost damage prevention effect for roadbed, but its french drain setting includes insulation board, permeable geotextiles and waterproof geotextiles
With in rubble bury drainage pipeline, structure is complicated and buried depth is relatively shallower, at the same the french drain be for road structure with
And slope is come using being not particularly suited for light construction frost heave basement process beside roadbed.
Traditional french drain mostly wraps up graded sand and stone with non-woven geotextile and embedding drainage pipeline is constituted in rubble, but its
Structure is excessively single, is easy that upper layer soil particle is made to enter french drain channel, easily causes drain line blockage over time, arrange french drain
Water is unsmooth, influences treatment effect and service life.As it can be seen that if using traditional french drain in basement process, not only ground underground
Water can not be excluded effectively, and accumulate over a long period underground water can be stored make in ground foundation soil moisture content increase and aggravation freeze
Harmful generation.
In view of above, existing frost heave method for processing foundation for the light constructions frost heave such as Oil and gas station basement process
It can not rationally solve.In order to meet national economic development demand and cooperate the construction of northwest China area long distance oil pipeline, at present
It is extremely urgent for a kind of demand of technology suitable for the light constructions object frost heave basement process such as Oil and gas station.
Utility model content
The frost damage prevention that the technical problem to be solved by the utility model is to provide a kind of frost damage prevention effects is good, service life is long
Water seepage mechanism.
To solve the above problems, a kind of frost damage prevention water seepage mechanism described in the utility model, be set to frost penetration (9) with
Down and have 1% ~ 2% longitudinal slope than drop, including rubble pervious bed (6), medium coarse sand filter layer (4), supporting course (2) and mesh draining
Pipe；
The rubble pervious bed (6) is located at center, cylindrical and fully wrapped around by the permeable geotextiles of internal layer (5), section
Face diameter is 1m ~ 1.5m；
The medium coarse sand filter layer (4) be disposed around the rubble pervious bed (6) outside, in a ring and its outside it is saturating by outer layer
Water geotextiles (3) package, with a thickness of 20cm ~ 25cm；
The supporting course (2) is laid on trench bottom original foundation soil (1), and is located at medium coarse sand filter layer (4) bottom
Portion, with a thickness of 8cm ~ 20cm；
The mesh water inlet end of the mesh drainpipe is connected with the water outlet of the french drain.
Preferably, in the medium coarse sand filter layer (4), sand grains diameter be 0.35 ~ 0.5mm, coarse sand partial size be 0.5mm with
On, the volume ratio of middle sand and coarse sand is 3 ~ 5:1.
Preferably, the supporting course (2) is laid with by rubble forms, the rubble and rubble pervious bed (6) medium stone
Partial size is 20mm ~ 200mm.
Compared with the prior art, the utility model has the following advantages:
1, frost damage prevention water seepage mechanism uses rubble pervious bed, outer layer among two layers of permeable geotextiles realization in the utility model
Ground can effectively, swimmingly be seeped under frost line under water, reduce whole by the cylindrical structure of medium coarse sand filter layer package, (1)
The seepage in underground of a foundation region effectively prevent the generation of freeze injury；(2) french drain channel has certain longitudinal slope than drop, can make
Seepage in foundation seepage is along channel Self-discharged；(3) the permeable geotextiles of outer layer can effectively prevent water seepage mechanism periphery soil particle to enter blind
Ditch prevents french drain from blocking, and then french drain can be made permanently to use.
2, the construction method step of the utility model frost damage prevention water seepage mechanism is simple, structurally reasonable, can be in the short period
Interior completion had not only saved the time in this way but also had saved engineering cost, can also be applied to some fill foundation engineering foundation drainers
Cheng Zhong is worth a wide range of and promotes.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is a kind of normal cross-section structural schematic diagram of frost damage prevention water seepage mechanism provided by the embodiment of the utility model.
Fig. 2 is a kind of side the schematic diagram of the section structure of frost damage prevention water seepage mechanism provided by the embodiment of the utility model.
Fig. 3 is a kind of frost damage prevention water seepage mechanism provided by the embodiment of the utility model water seepage mechanism net in a particular application
Arrangement schematic diagram.
Fig. 4 is a kind of flow chart of frost damage prevention water seepage mechanism construction method provided by the embodiment of the utility model.
In figure: 1-former foundation soil, 2-supporting courses, the permeable geotextiles of 3-outer layers, 4-medium coarse sand filter layers, 5-internal layers
Permeable geotextiles, 6-rubble pervious beds, 7-back fill courses, 8-channels, 9-frost penetrations, 10-perpendicular to massif infiltration side
To water seepage mechanism, water seepage mechanism inside 11-yards, the water seepage mechanism of 12-yard edge.
Specific embodiment
With reference to Fig. 1 ~ 2, the utility model embodiment provides a kind of frost damage prevention water seepage mechanism, be set to frost penetration 9 with
It is lower and have 1% ~ 2% longitudinal slope than drop, the water seepage mechanism specifically include rubble pervious bed 6, medium coarse sand filter layer 4, supporting course 2 and
Mesh drainpipe (not shown).
Rubble pervious bed 6 is located at center, cylindrical and fully wrapped around by the permeable geotextiles 5 of internal layer, and diameter of section is
1m~1.5m.Rubble pervious bed 6 is laid with by rubble to be formed, and ballast grain sizes are 20mm ~ 200mm.
It is outer, in a ring and its outside is wrapped by the permeable geotextiles 3 of outer layer that medium coarse sand filter layer 4 is disposed around rubble pervious bed 6
It wraps up in, with a thickness of 20cm ~ 25cm.In medium coarse sand filter layer 4, sand grains diameter be 0.35 ~ 0.5mm, coarse sand partial size be 0.5mm with
On, the volume ratio of middle sand and coarse sand is 3 ~ 5:1, such as 4:1, and the setting of such ratio ensure that ground water is fine and closely woven, swimmingly
Under be seeped under frost line rather than rough, bumpy underground arrange.
Supporting course 2 is laid on trench bottom original foundation soil 1, and is located at 4 bottom of medium coarse sand filter layer, with a thickness of 10cm
~20cm.Supporting course 2 is laid with by rubble to be formed, and ballast grain sizes are 20mm ~ 200mm.
The mesh water inlet end of mesh drainpipe is connected with the water outlet of french drain, under being specifically embedded in rubble pervious bed 6
Portion is discharged to default home for will seep the water not come in french drain.Mesh drainpipe can be made of steel pipe, water inlet
End is by reinforced mesh back cover.
The three elements of frost heave are soil, temperature and water.Moisture content in soil is bigger, and frost heave is with regard to big, and moisture content is small in soil, freezes
Swollen property is with regard to small；There is underground water in ground in frost penetration 9, frost heave is with regard to big, conversely, frost heave is with regard to small.
Above-mentioned french drain is buried in direction in soil layer perpendicular to seepage in foundation seepage, and seepage action of ground water will form an infundibulate and seep
Flow field is seeped into rubble pervious bed 6 by medium coarse sand filter layer 4, the water in rubble pervious bed 6 is main when underground water is seeped into french drain
Moved towards by two: a part is discharged along channel via mesh drainpipe, and a part is exuded to down via 4 bottom of medium coarse sand filter layer
Side.It prevents moisture in underground reservoir to flow to ground as a result, reduces ground level of ground water, by the ground underground depth of water to frozen soil depth
Degree 9 hereinafter, make foundation soil keep drying, ground maximum frost heave magnitude is reduced, to achieve the purpose that prevent freeze injury.
In addition, the permeable geotextiles 3 of outer layer on coarse sand filter layer 4 can filter out some soil particles in underground water, from
It is lost without will cause soil layer soil particle.
It, in practical applications, can be using on the whole for the frost damage prevention demand in a certain frozen soil region based on above content
Perpendicular to the water seepage mechanism network arrangements in infiltration direction.
For example, Lanzhou Oil and gas station is located on hillside, formed by cut and fill, yard takes up an area 13500m2.From building up
Since putting into operation, newly-built enclosure wall, electric substation's outdoor switch field, the sidewalk that enters the station, office building, rear portion pipeline process island etc. occur not
With the frost heaving failure of degree, frost heave causes serious destruction to yard underground valve pipeline etc., is seriously affecting yard just
It is often used, and huge threat is caused safely to the life of yard staff.In order to guarantee that yard works normally and stands
The life safety of field staff, is now handled on-site ground underground water, that is, is built water seepage mechanism net in length and breadth and formed ground
Blind drainage system under base, blind drainage system are mainly made of the water seepage mechanism of three kinds of specifications, with reference to Fig. 3, these three infiltrations
French drain is perpendicular to the infiltration of the massif infiltration water seepage mechanism 10 in direction, the water seepage mechanism 11 inside yard and yard edge respectively
French drain 12.
Disclosed frost damage prevention water seepage mechanism, the utility model embodiment accordingly provide a kind of step based on the above embodiment
Simply, the quick construction method, with reference to Fig. 4, the construction method of constructing specifically includes the following steps:
(1) it is excavated trapezoidal channel 8 than drop by default longitudinal slope and clears up leveling, be then laid with supporting course 2 in 8 bottom of channel.
Specifically, first carry out construction lofting, using mechanical excavation channel 8, channel 8 excavate shape be it is trapezoidal, in conjunction with people
Work carries out cleaning leveling to the channel 8 after excavation, and the longitudinal slope ratio of channel 8 is reduced to 1% ~ 2%；It is 1:0.5 that channel 8, which excavates ratio of slope,.
After channel 8 excavates, carry out being laid with supporting course 2 using mechanical and artificial combine, the rubble of supporting course 2 is answered
It is paved with entire 8 bottom surface of channel.
(2) after layer 2 to be supported is laid, the permeable geotextiles 3 of outer layer is laid with and are laid under medium coarse sand filter layer 4 on it
Half part.
Specifically, layer 2 to be supported starts to be laid with french drain after laying, first the laying permeable geotextiles 3 of outer layer, along its surface
It is laid with the lower half portion of medium coarse sand filter layer 4, i.e., reaches 6 stringcourse position of rubble pervious bed to the laying height of medium coarse sand filter layer 4
It sets.
(3) after partially being laid under medium coarse sand filter layer 4, the permeable geotextiles 5 of internal layer is laid with and complete rubble pervious bed 6
Laying and wrap up in volume.
Wherein, after the laying that rubble pervious bed 6 is completed in the permeable geotextiles 5 of internal layer, volume internal layer is wrapped up in along rubble pervious bed 6
Permeable geotextiles 5, and locked with fixation with steel wire.
(4) it is laid with the top half of medium coarse sand filter layer 4, and completes outer layer permeable geotextiles 3 and volume is wrapped up in it.
Specifically, after wrapping up in volume to the permeable geotextiles 5 of internal layer, continue to be laid with medium coarse sand infiltration along the permeable geotextiles 3 of outer layer
4 remainder of filtering layer, after medium coarse sand filter layer 4 is laid with to permeable 5 top of geotextiles of internal layer by the permeable geotextiles 3 of outer layer in
Coarse sand filter layer 4 wraps up in volume, and is locked with fixation with steel wire.
Wherein, to guarantee rubble pervious bed 6,4 stable structure of medium coarse sand filter layer, the permeable geotextiles 5 of internal layer, outer layer are permeable
The top surface lap width of geotextiles 3 is not less than 15cm ~ 20cm.Further it will be understood that the length of the permeable geotextiles 3 of outer layer
It should be enough to wrap up a circle along 4 top surface of medium coarse sand filter layer, the length of the permeable geotextiles 5 of internal layer should be enough along rubble pervious bed
6 top surfaces package, one circle.
(5) mesh drainpipe is disposed, and backfilling channel 8 makes 7 height of back fill course reach the completion construction of original ground height.
Technical solution provided by the utility model is described in detail above.Specific case pair used herein
The principles of the present invention and embodiment are expounded, and the above embodiments are only used to help understand, and this is practical new
The method and its core concept of type.It is practical not departing from it should be pointed out that for those skilled in the art
Under the premise of new principle, several improvements and modifications can be made to this utility model, these improvement and modification also fall into this
In the protection scope of utility model claims.
Claims (3)
1. a kind of frost damage prevention water seepage mechanism, which is characterized in that it is set to frost penetration (9) below and has 1% ~ 2% longitudinal slope than dropping,
Including rubble pervious bed (6), medium coarse sand filter layer (4), supporting course (2) and mesh drainpipe；
The rubble pervious bed (6) is located at center, cylindrical and fully wrapped around by the permeable geotextiles of internal layer (5), and section is straight
Diameter is 1m ~ 1.5m；
The medium coarse sand filter layer (4) be disposed around the rubble pervious bed (6) outside, in a ring and its outside by the permeable soil of outer layer
Work cloth (3) package, with a thickness of 20cm ~ 25cm；
The supporting course (2) is laid on trench bottom original foundation soil (1), and is located at medium coarse sand filter layer (4) bottom,
With a thickness of 8cm ~ 20cm；
The mesh water inlet end of the mesh drainpipe is connected with the water outlet of the french drain.
2. frost damage prevention water seepage mechanism as described in claim 1, which is characterized in that in the medium coarse sand filter layer (4), sand grains
Diameter is 0.35 ~ 0.5mm, and coarse sand partial size is 0.5mm or more, and the volume ratio of middle sand and coarse sand is 3 ~ 5:1.
3. frost damage prevention water seepage mechanism as described in claim 1, which is characterized in that the supporting course (2) is laid with by rubble to be formed,
The partial size of the rubble and rubble pervious bed (6) medium stone is 20mm ~ 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712825.XU CN208183720U (en) | 2018-05-14 | 2018-05-14 | A kind of frost damage prevention water seepage mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712825.XU CN208183720U (en) | 2018-05-14 | 2018-05-14 | A kind of frost damage prevention water seepage mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208183720U true CN208183720U (en) | 2018-12-04 |
Family
ID=64430437
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820712825.XU Expired - Fee Related CN208183720U (en) | 2018-05-14 | 2018-05-14 | A kind of frost damage prevention water seepage mechanism |
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| CN (1) | CN208183720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411893A (en) * | 2018-05-14 | 2018-08-17 | 兰州理工大学 | A kind of frost damage prevention water seepage mechanism and its construction method |
-
2018
- 2018-05-14 CN CN201820712825.XU patent/CN208183720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411893A (en) * | 2018-05-14 | 2018-08-17 | 兰州理工大学 | A kind of frost damage prevention water seepage mechanism and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20190514 |