CN203741815U

CN203741815U - Geotechnical drainage device

Info

Publication number: CN203741815U
Application number: CN201420142254.2U
Authority: CN
Inventors: 聂侦祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-26
Filing date: 2014-03-26
Publication date: 2014-07-30
Anticipated expiration: 2024-03-26

Abstract

The utility model relates to a geotechnical drainage device. The geotechnical drainage device comprises a drain board, a drain board sleeve sleeving the drain board, a plurality of sand grains, an inner sand bag and an outer sand bag for holding sand grains, and a drain board connector for connecting the drain board with the drain board sleeve; the drain board is arranged in the drain board sleeve which is arranged at the central position of the inner sand body; the inner sand body is arranged in the outer sand body; a plurality of sand grains are arranged in a space between the drain board sleeve and the inner sand bag. The geotechnical drainage device has the advantages of good drainage and solidification effects on soft soil and sludge, and good reusability.

Description

Soil engineering drainage device

Technical field

The utility model relates to a kind of geotechnological device, especially a kind of soil engineering drainage device.

Background technology

At weak soil, mud place precipitation consolidation process engineering field, there are the technology such as well-points dewatering, band drain precipitation, vacuum preloading, but well-points dewatering technique is loaded down with trivial details, band drain precipitation band drain is disposable use, can not Reusability, if but have and a kind ofly can, in conjunction with the advantage of well-points dewatering and band drain precipitation, can simplify technique, band drain again can Reusability soil engineering drainage device, can produce good benefit in geotechnological precipitation field.

Utility model content

In view of above-mentioned condition, be necessary to provide a kind of technique simple, and the soil engineering drainage device that band drain can be recycled.

A kind of soil engineering drainage device, it comprises: band drain, be enclosed within the band drain Membrane cover of described band drain periphery, some sand grains, the sand body inner bag of sand loading grain, sand body outer bag, connect the band drain connector of described band drain and described band drain Membrane cover, described band drain is arranged in described band drain Membrane cover, described band drain Membrane cover is arranged on described sand body inner bag center, described sand body inner bag is arranged in described sand body outer bag, and some described sand grains are filled in the space between this band drain Membrane cover and this sand body inner bag.

Described band drain is strip, taking its length direction as longitudinally, is distributed with some grooves at this band drain surface longitudinal.

Described band drain Membrane cover bottom lock, and form a bag-shaped space that can hold described band drain, band drain Membrane cover is to hold the fiber mesh cloth that hydrone and hydrated ion pass through.

Described sand grains is coccoid, between sand grains and sand grains, forms porous void, and sand material comprises and is not limited to: slag, sand, polystyrene foam plastics particle.

Described sand body inner bag is a cylindrical shape bag, its bottom lock, top end opening.

The material of described sand body inner bag is high strength fibre screen cloth.

Described sand body outer bag is a cylindrical shape bag, its bottom lock, top end opening.

The material of described sand body outer bag is high strength fibre screen cloth.

Because band drain surface has the groove of longitudinal distribution, and overcoat band drain Membrane cover, the groove longitudinally distributing on this Membrane cover and band drain forms the passage that transmits negative pressure of vacuum, is beneficial to negative pressure of vacuum transmission; Band drain is distributed with sand body outward, between sand grains and sand grains, has space, makes the negative pressure can be by space to the weak soil contacting with soil engineering drainage device, mud transmission, thereby the moisture in weak soil, mud is discharged, and reaches the effect in fixed weak soil, mud place.

Brief description of the drawings

Fig. 1 is the utility model soil engineering drainage device front schematic view.

Fig. 2 is the utility model soil engineering drainage device side schematic view.

Fig. 3 is band drain joint schematic diagram in the utility model soil engineering drainage device.

Wherein: band drain 100, band drain Membrane cover 200, sand body 300, sand body inner bag 400, sand body outer bag 500, band drain joint 600, the band drain joint vacuum preloading mouth of pipe 610, band drain joint band drain interface 620.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model embodiment mono-is described in further detail.

Refer to Fig. 1, Fig. 2 and Fig. 3, the utility model embodiment mono-.

A kind of soil engineering drainage device, it comprises: band drain 100, be enclosed within the band drain Membrane cover 200 of described band drain 100 peripheries, some sand grains, some sand grains composition sand bodies 300, the sand body inner bag 400 of sand loading grain, sand body outer bag 500, connect the band drain connector of described band drain 100 and described band drain Membrane cover 200, described band drain 100 is arranged in described band drain Membrane cover 200, described band drain Membrane cover 200 is arranged on described sand body inner bag 400 centers, described sand body inner bag 400 is arranged in described sand body outer bag 500, some described sand grains are filled in the space between this band drain Membrane cover 200 and this sand body inner bag 400.

Soil engineering drainage device is the use for weak soil, the fixed engineering of mud place precipitation.When construction operation, first use hydraulic giant at weak soil or mud place punching press pore-forming, its aperture, hole depth are slightly larger than diameter and the length of soil engineering drainage device, then this soil engineering drainage device is placed in to weak soil or hole, mud place, the upper end of band drain 100 connects vacuum preloading pipe by band drain joint 600, and vacuum preloading pipe connects vacuum pump.Then, vacuum diaphragm is laid in ground on the scene, and place is sealed.In the time starting vacuum pump, moisture in weak soil, mud place, due to atmosphere negative pressure effect, from weak soil, mud, pass through successively sand body outer bag 500, sand body inner bag 400, sand body 300, band drain Membrane cover 200, band drain 100, band drain joint 600, vacuum preloading pipe, thereby discharge.

Soil engineering drainage device center arranges band drain 100, and its negative pressure transmission effect is good, makes drainage effect good.

Described band drain 100 is strip, taking its length direction as longitudinally, is distributed with some grooves at these band drain 100 surface longitudinals.

Described band drain Membrane cover 200 bottom locks, and form a bag-shaped space that can hold described band drain 100, the fiber mesh cloth that band drain Membrane cover 200 passes through for holding hydrone and hydrated ion.

Longitudinal distribution groove on band drain 100 surfaces, band drain 100 is outsourcing band drain Membrane cover 200 again, between Membrane cover and groove, form again the little space that longitudinally distributes one by one, negative pressure that vacuum pump transmits to band drain 100 by vacuum preloading pipe can be delivered on band drain 100 everywhere.

The porous void forming between sand grains and sand grains, makes the negative pressure can be by space to sand body inner bag 400 and outer bag transmission.Sand body 300 is lightweight sand body 300, when the fixed engineering of precipitation finishes, when soil engineering drainage device is extracted, can draw lightweight sand body 300 with absorber, extracts task difficulty thereby reduce.

Described sand body inner bag 400 is a cylindrical shape bag, its bottom lock, top end opening.

The material of described sand body inner bag 400 is high strength fibre screen cloth.

Described sand body outer bag 500 is a cylindrical shape bag, its bottom lock, top end opening.

The material of described sand body outer bag 500 is high strength fibre screen cloth.

The mesh size of sand body inner bag 400 is the more than 3 times of sand body outer bag 500 mesh.The mesh of sand body outer bag 500 can only hold hydrone, ion and hydrated ion to be passed through.

The structure of sand body inner bag 400 is convenient to pack sand grains in sand body inner bag 400, sand body inner bag 400 is set with sand body outer bag 500 again, avoids sand body inner bag 400 to contact with weak soil, mud, makes can not sneak in sand body 300 earth, stop up space between sand grains and sand grains, and groove on band drain 100.Sand body inner bag 400 and sand body outer bag 500 all adopt high strength fibre screen cloth, be beneficial to after weak soil, the mud place fixed engineering of precipitation complete, when this soil engineering drainage device is extracted from place, sand body inner bag 400 and outer bag have enough intensity to bear to pull out the pulling force pulling and do not rupture, thereby be beneficial to soil engineering drainage device Reusability, reduce engineering cost.

Band drain 100 upper ends connect a band drain joint 600, and band drain joint 600 is communicated with vacuum preloading pipe.

Band drain joint 600 entirety are a shovel shape cavity, it is connected to form by plane body cavity and pipe, the cavity of its entirety for being communicated with, pipe one end opening, to be the band drain joint vacuum preloading mouth of pipe 610, plane body one side has rectangular aperture, is to be band drain joint band drain interface 620, and all the other places are all sealed.Plane body is the combination of a cuboid and prismatoid, the length of cuboid and the base of prismatoid are isometric, the length position of cuboid is connected and communicates with the position, base of prismatoid, and the top margin of prismatoid and the diameter of pipe are equal to, prismatoid top margin position and one end of pipe be connected and communicate.Cuboid is not connected the length position opening communicating with the base of prismatoid, make band drain 100 and the band drain Membrane cover 200 that is enclosed within outside band drain 100 can pass through this opening, stretches in plane body cavity.Pipe is not connected with the top margin position of prismatoid the position opening communicating, and this opening connects vacuum preloading pipe.Band drain joint 600 can adopt the integrally moulded shovel shape cavity of making.

The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims

1. a soil engineering drainage device, it is characterized in that: it comprises: band drain, be enclosed within the band drain Membrane cover of described band drain periphery, some sand grains, the sand body inner bag of sand loading grain, sand body outer bag, connect the band drain connector of described band drain and described band drain Membrane cover, described band drain is arranged in described band drain Membrane cover, described band drain Membrane cover is arranged on described sand body inner bag center, described sand body inner bag is arranged in described sand body outer bag, and some described sand grains are filled in the space between this band drain Membrane cover and this sand body inner bag.

2. soil engineering drainage device as claimed in claim 1, is characterized in that: described band drain is strip, taking its length direction as longitudinally, is distributed with some grooves at this band drain surface longitudinal.

3. soil engineering drainage device as claimed in claim 1, is characterized in that: described band drain Membrane cover bottom lock, and form a bag-shaped space that can hold described band drain, band drain Membrane cover is to hold the fiber mesh cloth that hydrone and hydrated ion pass through.

4. soil engineering drainage device as claimed in claim 1, is characterized in that: described sand grains is coccoid, between sand grains and sand grains, forms porous void, and sand material comprises and is not limited to: slag, sand, polystyrene foam plastics particle.

5. soil engineering drainage device as claimed in claim 1, is characterized in that: described sand body inner bag is a cylindrical shape bag, its bottom lock, top end opening.

6. soil engineering drainage device as claimed in claim 5, is characterized in that: the material of described sand body inner bag is high strength fibre screen cloth.

7. soil engineering drainage device as claimed in claim 1, is characterized in that: described sand body outer bag is a cylindrical shape bag, its bottom lock, top end opening.

8. soil engineering drainage device as claimed in claim 7, is characterized in that: the material of described sand body outer bag is high strength fibre screen cloth.