CN108729437A - Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure - Google Patents
Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure Download PDFInfo
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- CN108729437A CN108729437A CN201810779633.5A CN201810779633A CN108729437A CN 108729437 A CN108729437 A CN 108729437A CN 201810779633 A CN201810779633 A CN 201810779633A CN 108729437 A CN108729437 A CN 108729437A
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- 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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
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- Life Sciences & Earth Sciences (AREA)
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- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
本发明提供了一种复合排水隔离垫，包括由上而下依次设置的透水层、排水层和隔水层，所述透水层、排水层和隔水层的相邻两层之间通过层间热粘结工艺复合形成整体式结构，透水层的一端向外延伸设有上搭接段，隔水层向外延伸设有下搭接段，上搭接段和下搭接段异侧布置。该发明具有良好的渗排水、隔水功能，能够将上部下渗或积水快速排出，避免下渗软化基底，同时又能通过隔水层隔断基底毛细水的上升；还具有透水而保土、防淤堵性能以防止细颗粒流失，以及具备在上部重力或荷载作用、施工碾压下的防顶破性能，确保路基的长期稳定，可广泛适用于铁路、公路、城市道路等路基基床防排水、路基边坡疏排水。
The invention provides a composite drainage isolation pad, which comprises a water-permeable layer, a drainage layer and a water-proof layer arranged in sequence from top to bottom, and the adjacent two layers of the water-permeable layer, drainage layer and water-proof layer are passed The thermal bonding process is combined to form an integral structure. One end of the water-permeable layer extends outwards with an upper lapped section, and the water-resistant layer extends outwards with a lower lapped section. The upper lapped section and the lower lapped section are arranged on different sides. The invention has good functions of seepage, drainage and water isolation, and can quickly discharge the upper part of infiltration or accumulated water to avoid infiltration and softening of the base. Anti-clogging performance to prevent the loss of fine particles, as well as anti-burst performance under the action of upper gravity or load and construction rolling, to ensure the long-term stability of the roadbed, and can be widely used in roadbed bed protection for railways, highways, urban roads, etc. Drainage, embankment slope drainage.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, and in particular to a kind of composite, water-drain isolating pad, bedding discharge structure and
Side slope is layered discharge structure, for subgrade engineerings bedding and slope drainages such as railway, highway, roads.
Background technology
It is oozed under rainfall table water is a large amount of or when underground capillary water rises into the subgrade engineerings bedding such as railway, highway, it will
Bedding water content is caused to increase, the soil body or filler softening, strength reduction cause roadbed that subgrade subsidence, the diseases such as rise soil occur
Evil, especially cause the expanding of bad nature of soil, it is molten the deformation failures such as fall into, collapse, influence the normal use of engineering；In addition, rainy
When roadbed filling is to meet water easy-weathering, the soft rockmass of softening, fine grained soil etc., road bed or slope table are difficult to after oozing under water in area
In time discharge, Body filler water content increase, or even formed water pocket, roadbed filling strength reduction, often result in roadbed Excessive Settlement,
The diseases such as slope collapsing slide, slope type sliding generate.
To prevent above-mentioned disease from generating, for subgrade bed in the past frequently with Radix Notoginseng soil, cement mortar or concrete, compound
Geomembrane, drain bar etc. carry out bedding closing or partition processing；Roadbed side slope is arranged frequently with draining sewer, draining inclined hole etc.
Carry out white-out is applied, but in terms of material nature, property easy for construction and practical application effect, above-mentioned measure has certain lack
It falls into or insufficient, such as Radix Notoginseng soil improvement earthen materia itself has that meeting water easily softens；That there are layers is thin for mortar or coagulation great soil group
Easy to crack and waterproof failure problem；The earth working materials such as composite geo-membrane, drain bar then be easily detained, arrange slowly by generally existing drainage speed
Outlet capacity is insufficient, material aging cracky and in train long duration load（Especially dynamic load）The lower guarded drainage performance of effect is shorter
It is greatly reduced in time and even fails；The water drainages measures such as the draining sewer, the draining inclined hole that are drained for roadbed side slope, the roads Jun
Base is constructed after filling molding, because it handles depth, is limited in scope or constructs that there are larger difficulties, it is difficult to play the role of water drainage etc.
Problem.
To solve the deficiency of above-mentioned guarded drainage material, need research and development are a kind of there is anti-, row's multiple functions one, construction letter
Just, validity period limit for length, low-cost novel guarded drainage material especially have in larger normal stress（Such as train bankets
Load, construction rolling etc.）Guarded drainage performance can be preferably kept under effect, it is quickly that infiltration discharge bedding or roadbed filling is external,
Ensure the steady in a long-term of roadbed.
Invention content
The purpose of the present invention is overcome to be used for bedding closing or partition processing, side slope water drainage common materials in the prior art
In various degree exist have a single function, performance deficiency, material aging cracky, constructional difficulties the problems such as.
For this purpose, the present invention provides a kind of composite, water-drain isolating pads, including from top to bottom set gradually pervious bed, draining
Layer and water barrier, are formed between the pervious bed, drainage blanket and the adjacent two layers of water barrier by interlayer thermal bonding process combining
Monolithic construction, one end of the pervious bed, which extends outwardly, is provided with the pervious bed for overlapping adjacent composite, water-drain isolating pad
Upper lap segment, the water barrier, which extends outwardly, is provided with the lower overlap joint of the water barrier for overlapping adjacent composite, water-drain isolating pad
Section, the upper lap segment and lower lap segment heteropleural arrangement.
Further, the drainage blanket is 3 D stereo reticular structure, and porosity is more than 75%, and compression strength is not less than
60kPa。
Further, the pervious bed use synthetic staple fibers needling nonwoven geotextiles, vertical permeability coefficient >=0.1cm/s,
Effective aperture O95For 0.075~0.20mm.
Further, the water barrier is that polyolefin resin film, polyester resin film or polyamide-based resin are thin
Film, vertical permeability coefficient are not more than 1*10-11cm/s。
Further, the length of the upper lap segment and lower lap segment be 10~20cm, the upper lap segment with it is adjacent multiple
Close the lap-joint of the pervious bed of draining isolating pad and the lap-joint of lower lap segment and the water barrier of adjacent composite, water-drain isolating pad
It is sutured and is connected by connector, and the connector is through pervious bed, drainage blanket and water barrier setting.
Further, the thickness of above-mentioned composite, water-drain isolating pad is 3.5~8.5mm, mass area ratio >=850g/m2,
Plane water-flowing amount >=5L/m.min.
Further, above-mentioned composite, water-drain isolating pad further includes being layed in the medium coarse sand protective layer of water barrier bottom, described
Medium coarse sand protective layer thickness is not less than 0.05m.
In addition, the present invention also provides a kind of bedding waterproof/drainage structure, including subgrade soil layer, bedding ontology and above-mentioned
Composite, water-drain isolating pad, the bedding ontology include bottom layer of subgrade and surface layer of subgrade bed, and the bottom layer of subgrade is arranged in subgrade soil
On layer, the surface layer of subgrade bed is arranged on bottom layer of subgrade, and the composite, water-drain isolating pad is arranged in bottom layer of subgrade bottom or bedding
Surface layer bottom, and the water barrier side of the composite, water-drain isolating pad is laid with downward.
Further, the bedding ontology is embankment bedding or non-rigid rock cutting bedding.
The present invention also provides a kind of side slopes to be layered waterproof/drainage structure, including longitudinally upper equal along grade of side slope direction and circuit
The roadbed filling body layer being alternately laid with and above-mentioned composite, water-drain isolating pad, and the water barrier side court of the composite, water-drain isolating pad
Lower laying, spacing is 1.2~2.4m between the two neighboring composite, water-drain isolating pad along grade of side slope direction, and circuit is longitudinal
Spacing is 4.0~8.0m between the upper two neighboring composite, water-drain isolating pad.
Compared with prior art, beneficial effects of the present invention：
(1) this composite, water-drain isolating pad provided by the invention oozes draining, waterproof function with good, on the one hand can be smooth
Ground oozes upper subordinate or ponding is quickly discharged, and avoids down oozing softening substrate, while can separate substrate capillary water by water barrier again
Rising；Also have permeable and soil conservation, silting blocking performance to prevent stream of fine particles from losing, and has in top gravity or load work
With the anti-Bursting Properties etc. under, construction rolling, it can ensure that the steady in a long-term of roadbed, be widely portable to railway, highway, city road
The subgrade beds guarded drainage such as road, roadbed side slope water drainage have good social economy and technical benefits.
(2) this composite, water-drain isolating pad provided by the invention is used for bedding and side slope guarded drainage, efficiently solves existing
Bedding and side slope guarded drainage are insufficient existing for material nature, property easy for construction etc..
The present invention is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the structural schematic diagram of composite, water-drain isolating pad of the present invention；
Fig. 2 be composite, water-drain isolating pad of the present invention width between overlap schematic diagram；
Fig. 3 is embankment bedding waterproof/drainage structure schematic diagram of the present invention；
Fig. 4 is the non-rigid rock cutting bedding waterproof/drainage structure schematic diagram of the present invention；
Fig. 5 is side slope layering waterproof/drainage structure schematic diagram of the present invention；
Fig. 6 is in Fig. 5 along the schematic cross-section in the directions A-A.
Reference sign：1, pervious bed；2, drainage blanket；3, upper lap segment；4, water barrier；5, lower lap segment；6, it connects
Part；7, composite, water-drain isolating pad；8, subgrade soil layer；9, bottom layer of subgrade；10, surface layer of subgrade bed；11, cutting drains lateral sulcus；12, it arranges
Water sewer；13, roadbed filling body layer.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term "center", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on ... shown in the drawings
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention；?
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As shown in Figure 1, present embodiments providing a kind of composite, water-drain isolating pad, including from top to bottom set gradually permeable
Layer 1, drainage blanket 2 and water barrier 4 pass through interlayer thermal bonding in the pervious bed 1, drainage blanket 2 and water barrier 4 between adjacent two layers
Process combining formed monolithic construction, one end of the pervious bed 1 extend outwardly be provided with for overlap adjacent composite, water-drain every
The upper lap segment 3 of pervious bed 1 from pad, the water barrier 4, which extends outwardly, to be provided with for overlapping adjacent composite, water-drain isolating pad
Water barrier 4 lower lap segment 5, the upper lap segment 3 and lower 5 heteropleural of lap segment arrangement, pass through upper lap segment 3 and lower lap segment
5 setting may make multiple composite, water-drain isolating pads that can be combined use according to practical roadbed situation, and two neighboring multiple
Gap is not present in the connection closed between draining isolating pad, to effectively avoid infiltration from penetrating into subgrade bed, ensure that it to roadbed
The waterproof effect of engineering；Preferably, the length of the upper lap segment 3 and lower lap segment 5 is 10~20cm.It is permeable in the present embodiment
Layer 1 effect on the one hand be anti-filter and drainage, can guarantee it is smooth, top is discharged in time（As subgrade bed, top are banketed
Deng）Water, on the other hand can soil conservation, silting blocking, can avoid bedding, banket it is fine grain be largely lost, and fine grained can be prevented
It penetrates into anti-filter drainage blanket and forms siltation blocking to influence the steady in a long-term of bedding；The effect of drainage blanket 2 is that have enough drainings
Ability, can be external by infiltration discharge bedding or roadbed filling as early as possible, and ponding is avoided to soften bedding；One side of effect of water barrier 4
Face is to prevent from top to ooze under water, is on the other hand the rising passway for the capillary water that can separate the lower part soil body；Pervious bed 1, draining
Layer 2 and water barrier 4 by hot adhesion technique formed it is whole there is larger compression strength, while also needing to ensure that each interlayer has larger
Peel strength.In one, application field is wide for composite, water-drain isolating pad integrate draining, the water proof multiple functions, and validity period limit for length applies
Work is easy, it is of low cost the features such as, especially have in larger normal stress（Such as train or filled load, construction rolling）Make
Under, guarded drainage performance can be preferably kept, quickly by infiltration discharge bedding or roadbed filling in vitro or on partition substrate capillary water
Rise channel, it is ensured that roadbed it is steady in a long-term.
The embodiment of refinement, the drainage blanket 2 are 3 D stereo reticular structure, and material may be used with macrovoid
The stereo net material of rate, porosity are more than 75%, spinning can be carried out by primary raw material of thermoplastic synthetic resin, in strand
It rotates strand under non-curing condition and strand multiple spot mutually bonding is enabled to form 3 D stereo reticular structure, compression strength is not small
In 60kPa.The pervious bed 1 uses synthetic staple fibers needling nonwoven geotextiles, vertical permeability coefficient >=0.1cm/s, effective aperture
O95For 0.075~0.20mm.The water barrier 4 is using the flexible or semi-rigid lamelliform water proof material for having certain toughness and intensity
Material, can be polyolefin resin film, polyester resin film or polyamide-based resin film, preferred polyethylene film for earthwork,
Its vertical permeability coefficient is not more than 1*10-11Cm/s, and with to sulfate, villaumite, carbonate with long-term corrosion resistance and anti-
Ageing properties；And the thickness for the composite, water-drain isolating pad being combined by above-mentioned pervious bed 1, drainage blanket 2 and water barrier 4 is
3.5~8.5mm corresponds to mass area ratio >=850g/m2, it is multiple to further ensure this plane water-flowing amount >=5L/m.min
That closes draining isolating pad oozes drainage effect.
Further, strong in order to improve the connection between upper lap segment 3 and lower lap segment 5 and adjacent composite, water-drain isolating pad
It spends, i.e., the bonding strength between two neighboring composite, water-drain isolating pad, as shown in Fig. 2, the upper lap segment 3 and adjacent composite bar
The lap-joint of the pervious bed 1 of water segregation pad and the lap-joint of lower lap segment 5 and the water barrier 4 of adjacent composite, water-drain isolating pad
It is sutured and is connected by connector 6, and the connector 6 is arranged through pervious bed 1, drainage blanket 2 and water barrier 4；Pass through connection
Part 6 connects into upper lap segment 3 or lower lap segment 5 and the pervious bed 1, drainage blanket 2 and water barrier 4 of adjacent composite, water-drain isolating pad
One entirety ensures between each composite, water-drain isolating pad not to improve the bonding strength of multiple composite, water-drain isolating pads combination
It is easily peelable；Wherein, connector 6 can be steel nail or flexible wire, and steel nail can pass through portable steel nail gun（The same stapler of principle）
It squeezes into and runs through composite, water-drain isolating pad, flexible wire then runs through composite, water-drain isolating pad by suture way.
And in by above-mentioned composite, water-drain isolating pad for guarded drainage work progress, by the water barrier of composite, water-drain isolating pad
4 sides are arranged downward, when the filler below composite, water-drain isolating pad is in rubble, dust shape, water proof when to prevent construction rolling
Layer 4 is damaged by filler bursting, and the composite, water-drain isolating pad of optimization further includes being layed in the medium coarse sand protection of 4 bottom of water barrier
Layer（It is not indicated in figure）, the medium coarse sand protective layer thickness is not less than 0.05m.
In addition, the composite, water-drain isolating pad of above-described embodiment can be used for bedding and side slope guarded drainage, for bedding guarded drainage
Structure, as shown in Figure 3 and Figure 4, including subgrade soil layer 8, bedding ontology and above-mentioned composite, water-drain isolating pad 7, the bedding
Ontology can be embankment bedding（As shown in Figure 3）Or non-rigid rock cutting bedding（As shown in Figure 4）, including bottom layer of subgrade 9 and base
Bed surface layer 10, the bottom layer of subgrade 9 are arranged on subgrade soil layer 8, and the surface layer of subgrade bed 10 is arranged on bottom layer of subgrade 9, institute
The setting of composite, water-drain isolating pad 7 is stated in 10 bottom of 9 bottom of bottom layer of subgrade or surface layer of subgrade bed, and the composite, water-drain isolating pad 7
4 side of water barrier is laid with downward, and is that selection is layed in 10 bottom of surface layer of subgrade bed or bedding bottom for composite, water-drain isolating pad 7
Layer 9 bottom, mainly according to embankment bottom layer of subgrade, the water stability of roadbed subgrade soil layer filler, cutting location rock water stability,
The factors such as lower water development degree determine.For non-rigid rock cutting bedding, optimization, as shown in figure 4, can also be set in roadbed both sides
Cutting draining lateral sulcus 11 is set, while in 11 times setting draining sewers 12 of cutting draining lateral sulcus, when the setting of composite, water-drain isolating pad 7 exists
When 9 bottom of bottom layer of subgrade, it will be connected to draining sewer 12 in 7 end of composite, water-drain isolating pad of roadbed both sides, pass through composite bar
Infiltration is quickly drained into draining sewer 12 and is discharged by water segregation pad 7, and when composite, water-drain isolating pad 7 is arranged in 10 bottom of surface layer of subgrade bed
When, then it will be connected to cutting in 7 end of composite, water-drain isolating pad of roadbed both sides and drain lateral sulcus 11, pass through composite, water-drain isolating pad
7, which quickly drain into infiltration cutting draining lateral sulcus 11, is discharged, and further improves the guarded drainage effect to subgrade bed.
For side slope waterproof/drainage structure, as shown in Figure 5 and Figure 6, including handed over along grade of side slope direction and circuit longitudinal direction
Roadbed filling body layer 13 for laying and above-mentioned composite, water-drain isolating pad 7, composite, water-drain isolating pad 7 with roadbed filling and every
1.2~2.4m spacing is layed in a certain range of both sides side slope, and in circuit, longitudinally upper spacing is 4.0 to composite, water-drain isolating pad 7
~8.0m, and 4 side of water barrier of the composite, water-drain isolating pad 7 is laid with downward；It is multiple by being laid with during slope construction
Draining isolating pad 4 is closed, for realizing the guarded drainage purpose of follow-up side slope, is efficiently solved after existing roadbed side slope fills molding
Depth is handled caused by the water drainages measure such as construction drainage sewer, draining inclined hole again, is limited in scope or constructs and be stranded there are larger
It is difficult, it is difficult to the problem of playing the role of water drainage.
In conclusion this composite, water-drain isolating pad provided by the invention oozes draining, waterproof function, a side with good
Face can successfully ooze upper subordinate or ponding is quickly discharged, and avoids down oozing softening substrate, while again by water barrier can separate
The rising of substrate capillary water；Also have permeable and soil conservation, silting blocking performance to prevent stream of fine particles from losing, and has in top weight
Anti- Bursting Properties etc. under power or load action, construction rolling, can ensure that the steady in a long-term of roadbed, be widely portable to railway,
The subgrade beds guarded drainage such as highways and streets, roadbed side slope water drainage have good social economy and technical benefits.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779633.5A CN108729437A (en) | 2018-07-16 | 2018-07-16 | Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779633.5A CN108729437A (en) | 2018-07-16 | 2018-07-16 | Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure |
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| CN108729437A true CN108729437A (en) | 2018-11-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371773A (en) * | 2018-12-03 | 2019-02-22 | 长沙建益新材料有限公司 | Anti-filter antiseepage overlay film drainage network and preparation method |
| CN109518730A (en) * | 2018-12-29 | 2019-03-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Offshore wind power foundation Anti-scouring device |
| CN111304969A (en) * | 2020-03-31 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Anti-uplift structure of ballastless track tram in strong expansive soil or expansive rock area |
| CN111424482A (en) * | 2020-03-13 | 2020-07-17 | 东北林业大学 | Road structure based on water barrier layer of hydrophobic material and layout method of water barrier layer |
| CN111648383A (en) * | 2020-05-28 | 2020-09-11 | 机械工业勘察设计研究院有限公司 | Internal drainage method for loess high-fill side slope |
| CN111663390A (en) * | 2020-06-28 | 2020-09-15 | 中国水利水电第四工程局有限公司 | Expansive soil terrace embankment filling structure and construction method |
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| CN109371773A (en) * | 2018-12-03 | 2019-02-22 | 长沙建益新材料有限公司 | Anti-filter antiseepage overlay film drainage network and preparation method |
| CN109518730A (en) * | 2018-12-29 | 2019-03-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Offshore wind power foundation Anti-scouring device |
| CN111424482A (en) * | 2020-03-13 | 2020-07-17 | 东北林业大学 | Road structure based on water barrier layer of hydrophobic material and layout method of water barrier layer |
| CN111304969A (en) * | 2020-03-31 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Anti-uplift structure of ballastless track tram in strong expansive soil or expansive rock area |
| CN111648383A (en) * | 2020-05-28 | 2020-09-11 | 机械工业勘察设计研究院有限公司 | Internal drainage method for loess high-fill side slope |
| CN111663390A (en) * | 2020-06-28 | 2020-09-15 | 中国水利水电第四工程局有限公司 | Expansive soil terrace embankment filling structure and construction method |
| CN114016494A (en) * | 2021-10-24 | 2022-02-08 | 中国矿业大学 | A construction method of large-span underground space based on open pit |
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Application publication date: 20181102 |