CN208762998U - Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure - Google Patents

Abstract

The utility model composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure, provide a kind of composite, water-drain isolating pad, including the pervious bed, drainage blanket and water barrier from top to bottom set gradually, monolithic construction is formed by interlayer thermal bonding process combining between the pervious bed, drainage blanket and the adjacent two layers of water barrier, one end of pervious bed extends outwardly equipped with upper lap segment, water barrier extends outwardly equipped with lower lap segment, upper lap segment and lower lap segment heteropleural arrangement.The utility model has the draining of good infiltration, waterproof function, can seep upper subordinate or ponding is quickly discharged, and avoids lower infiltration softening substrate, while can separate the rising of substrate capillary water by water barrier again；Also have permeable and soil conservation, silting blocking performance to prevent stream of fine particles from losing, and have the anti-Bursting Properties under top gravity or load action, construction rolling, ensure the steady in a long-term of roadbed, is widely portable to the subgrade beds guarded drainage such as railway, highways and streets, roadbed side slope water drainage.

Description

Composite, water-drain isolating pad, bedding waterproof/drainage structure and side slope are layered waterproof/drainage structure

Technical field

The utility model belongs to Geotechnical Engineering field, and in particular to a kind of composite, water-drain isolating pad, bedding draining knot Structure and side slope are layered discharge structure, for subgrade engineerings bedding and slope drainages such as railway, highway, roads.

Background technique

It, will when largely lower infiltration or underground capillary water rise into the subgrade engineerings bedding such as railway, highway to rainfall table water 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 occurs Evil, especially cause bad nature of soil expansion, 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 seeping 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 slowly, arrange by generally existing drainage speed Outlet capacity is insufficient, material aging cracky and guarded drainage performance is shorter under train long duration load (especially dynamic load) effect 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 road 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.

For the deficiency for solving above-mentioned guarded drainage material, needing to research and develop one kind has anti-, row's multiple functions one, letter of constructing Just, validity period limit for length, low-cost novel guarded drainage material especially have and (such as train or banket in larger normal stress Load, construction rolling etc.) effect is lower can preferably keep guarded drainage performance, bedding quickly is discharged or roadbed filling is external in infiltration, Ensure the steady in a long-term of roadbed.

Utility model content

The purpose of the utility model is to overcome be used for bedding closing or partition processing, side slope water drainage are common in the prior art There is the problems such as having a single function, performance is insufficient, material aging cracky, constructional difficulties in various degree in material.

For this purpose, the utility model provides a kind of composite, water-drain isolating pad, including from top to bottom set gradually pervious bed, Drainage blanket and water barrier pass through interlayer thermal bonding process combining between the pervious bed, drainage blanket and the adjacent two layers of water barrier Monolithic construction is formed, one end of the pervious bed, which extends outwardly, to be provided with for overlapping the permeable of adjacent composite, water-drain isolating pad The upper lap segment of layer, the water barrier, which extends outwardly to be provided under the water barrier for overlapping adjacent composite, water-drain isolating pad, to be taken Connect section, the upper lap segment and lower lap segment heteropleural arrangement.

Further, the drainage blanket is 3 D stereo reticular structure, and porosity is greater 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 lap-joint of the pervious bed of draining isolating pad and the water barrier of lower lap segment and 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, above-mentioned composite, water-drain isolating pad with a thickness of 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 the medium coarse sand protective layer for being layed in water barrier bottom, described Medium coarse sand protective layer thickness is not less than 0.05m.

In addition, the utility model additionally 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 roadbed On solum, the surface layer of subgrade bed is arranged on bottom layer of subgrade, the composite, water-drain isolating pad setting in bottom layer of subgrade bottom or Surface layer of subgrade bed 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 utility model additionally provides a kind of side slope layering waterproof/drainage structure, including longitudinal along grade of side slope direction and route On the roadbed filling body layer that is alternately laid with and above-mentioned composite, water-drain isolating pad, and the water barrier one of the composite, water-drain isolating pad Side is laid with downward, and spacing is 1.2~2.4m, route between the two neighboring composite, water-drain isolating pad along grade of side slope direction Spacing is 4.0~8.0m between longitudinally adjacent two composite, water-drain isolating pads.

Compared with prior art, the utility model has the beneficial effects that

(1) this composite, water-drain isolating pad provided by the utility model has the draining of good infiltration, waterproof function, on the one hand Successfully upper subordinate can be seeped or ponding is quickly discharged, avoid lower infiltration softening substrate, while base can be separated by water barrier again The rising of bottom capillary water；Also have permeable and soil conservation, silting blocking performance to prevent stream of fine particles from losing, and has in top gravity Or anti-Bursting Properties under load action, construction rolling etc., it can ensure that the steady in a long-term of roadbed, be widely portable to railway, public affairs The subgrade beds such as road, urban road guarded drainage, roadbed side slope water drainage have good social economy and technical benefits.

(2) this composite, water-drain isolating pad provided by the utility model is used for bedding and side slope guarded drainage, efficiently solves Existing bedding and side slope the guarded drainage deficiency existing for material nature, property easy for construction etc..

The utility model is described in further details below with reference to attached drawing.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model composite, water-drain isolating pad；

Fig. 2 be the utility model composite, water-drain isolating pad width between overlap schematic diagram；

Fig. 3 is the utility model embankment bedding waterproof/drainage structure schematic diagram；

Fig. 4 is the non-rigid rock cutting bedding waterproof/drainage structure schematic diagram of the utility model；

Fig. 5 is the utility model side slope layering waterproof/drainage structure schematic diagram；

Fig. 6 is in Fig. 5 along the schematic cross-section in the direction A-A.

Description of symbols: 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 embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work All other embodiment obtained, fall within the protection scope of the utility model.

In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical Novel limitation；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.

As shown in Figure 1, a kind of composite, water-drain isolating pad is present embodiments provided, it is permeable including what is from top to bottom set gradually Layer 1, drainage blanket 2 and water barrier 4 pass through interlayer thermal bonding between adjacent two layers in the pervious bed 1, drainage blanket 2 and water barrier 4 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, so that infiltration effectively be avoided to penetrate 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 On the one hand the effect of layer 1 is anti-filter and drainage, can guarantee that smooth, (such as subgrade bed, top bankets on discharge top in time 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 seep under water, is on the other hand the rising passway that can separate the capillary water of the lower part soil body；Pervious bed 1, draining Layer 2 and water barrier 4 are formed whole with biggish compression strength by hot adhesion technique, 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 The features such as work is easy, low in cost especially has and makees at larger normal stress (such as train or filled load, construction rolling) 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 can be using with macrovoid The stereo net material of rate, porosity are greater 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 is enabled mutually to bond 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 there is long-term corrosion resistance and anti-to sulfate, villaumite, carbonate Ageing properties；And the composite, water-drain isolating pad being combined by above-mentioned pervious bed 1, drainage blanket 2 and water barrier 4 with a thickness of 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 Close the infiltration drainage effect of draining isolating pad.

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 water barrier 4 of the lap-joint of the pervious bed 1 of water segregation pad and lower lap segment 5 and adjacent composite, water-drain isolating pad By the suture connection of 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 through composite, water-drain isolating pad, flexible wire then passes through suture way through composite, water-drain isolating pad.

And be used in guarded drainage work progress by above-mentioned composite, water-drain isolating pad, 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 (not indicating in figure), the medium coarse sand protective layer thickness are 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 development degree are lauched to determine.For non-rigid rock cutting bedding, optimization, as shown in figure 4, can also be set in roadbed two sides Cutting draining lateral sulcus 11, while the setting draining sewer 12 in the case where cutting drains lateral sulcus 11 are set, 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 two 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 draining lateral sulcus 11 in 7 end of composite, water-drain isolating pad of roadbed two sides, passes 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 hand over along grade of side slope direction and route longitudinal direction Roadbed filling body layer 13 and above-mentioned composite, water-drain isolating pad 7 for laying, composite, water-drain isolating pad 7 with roadbed filling and every 1.2~2.4m spacing is layed in a certain range of two sides side slope, and in route, 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 subsequent 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 utility model has the draining of good infiltration, waterproof function, On the one hand successfully upper subordinate can be seeped or ponding is quickly discharged, avoid lower infiltration softening substrate, while water barrier can be passed through again 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 upper Anti- Bursting Properties etc. under portion's gravity or load action, construction rolling, can ensure that the steady in a long-term of roadbed, are widely portable to iron The subgrade beds guarded drainage such as road, highways and streets, roadbed side slope water drainage have good social economy and technical benefits.

Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model Limitation, it is all to be belonged within the protection scope of the utility model with the same or similar design of the utility model.

Claims (10)

1. composite, water-drain isolating pad, it is characterised in that: including the pervious bed, drainage blanket and water barrier from top to bottom set gradually, Monolithic construction is formed by interlayer thermal bonding process combining between the pervious bed, drainage blanket and the adjacent two layers of water barrier, One end of the pervious bed, which extends outwardly, is provided with the upper lap segment of the pervious bed for overlapping adjacent composite, water-drain isolating pad, institute It states water barrier and extends outwardly and be provided with the lower lap segment of the water barrier for overlapping adjacent composite, water-drain isolating pad, the upper overlap joint Section and lower lap segment heteropleural arrangement.

2. composite, water-drain isolating pad as described in claim 1, it is characterised in that: the drainage blanket is the netted knot of 3 D stereo Structure, porosity are greater than 75%, and compression strength is not less than 60kPa.

3. composite, water-drain isolating pad as described in claim 1, it is characterised in that: the pervious bed is using chopped fiber needle-punched non-woven Geotextiles, vertical permeability coefficient >=0.1cm/s, effective aperture O₉₅For 0.075~0.20mm.

4. composite, water-drain isolating pad as described in claim 1, it is characterised in that: the water barrier is that polyolefin resin is thin Film, polyester resin film or polyamide-based resin film, vertical permeability coefficient are not more than 1*10^-11cm/s。

5. composite, water-drain isolating pad as described in claim 1, it is characterised in that: the length of the upper lap segment and lower lap segment For 10~20cm, the upper lap segment and the lap-joint of the pervious bed of adjacent composite, water-drain isolating pad and lower lap segment and phase The lap-joint of the water barrier of adjacent composite, water-drain isolating pad by connector suture connect, and the connector through pervious bed, Drainage blanket and water barrier setting.

6. composite, water-drain isolating pad as described in claim 1, it is characterised in that: it is with a thickness of 3.5~8.5mm, unit area Quality >=850g/m², plane water-flowing amount >=5L/m.min.

7. composite, water-drain isolating pad as described in claim 1, it is characterised in that: further include being layed in water barrier bottom slightly Sand protective layer, the medium coarse sand protective layer thickness are not less than 0.05m.

8. bedding waterproof/drainage structure, it is characterised in that: including subgrade soil layer, any one of bedding ontology and claim 1~7 The 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 roadbed On solum, the surface layer of subgrade bed is arranged on bottom layer of subgrade, the composite, water-drain isolating pad setting in bottom layer of subgrade bottom or Surface layer of subgrade bed bottom, and the water barrier side of the composite, water-drain isolating pad is laid with downward.

9. bedding waterproof/drainage structure as claimed in claim 8, it is characterised in that: the bedding ontology is embankment bedding or non-hard Matter rock cutting bedding.

10. side slope is layered waterproof/drainage structure, it is characterised in that: including being alternately laid with along grade of side slope direction and route longitudinal direction Roadbed filling body layer and any one of the claim 1~7 composite, water-drain isolating pad, and the composite, water-drain isolating pad every Water layer side is laid with downward, along grade of side slope direction between the two neighboring composite, water-drain isolating pad spacing be 1.2~ 2.4m, spacing is 4.0~8.0m between the composite, water-drain isolating pad of longitudinally adjacent two of side slope cross section.