CN2723514Y - Anti-flood repairing piping filter pad - Google Patents

Abstract

The utility model relates to an anti-flood repairing piping filter pad, which is characterized in that the filter pad comprises two back filter cloths wove by polypropylene or chinlon fiber materials and high absorption resin materials. The peripheries of the two filter cloths are sutured form top to bottom, the middle part is sutured in round shape or square shape from top to bottom, two cavities are formed with the suture thread as the boundary, and the high absorption resin materials are filled into the peripheral cavity. The filtering pad can be mass produced, and be laid conveniently and quickly in anti-flood activities. The utility model whose character can not be affected by deformation can keep sands with water through and reduce the water flow, and can be used repeatedly, which reduces the anti-flood cost.

Description

A kind of flood fighting piping filter bed of rescuing and protecting

Technical field

The utility model relates to a kind of water conservancy equipment, particularly a kind of flood fighting piping filter bed of rescuing and protecting.

Background technology

China has dyke 250,000 km now, wherein main dyke 6.57km.Its characteristics: (1) levee foundation condition is poor; (2) levee body fills of poor quality; (3) swag reaches levee toe protection more behind the dike.Dyke dangerous situation such as piping often takes place, come down and overflow when therefore meeting with flood.Particularly very dangerous under the big flow of flood, high water level, long-time condition of soaking, dangerous situation is continuous.With regard to piping and leak dangerous situation, its scope is big to reach tens thousand of square metres, and the serious feelings of its dangerous situation can directly cause dike breaching.The piping dangerous situation of rescuing and protecting is enclosed the well except that commonly used, and another kind of effective measures are filter blanket, and it act as and reduces the water burst flow velocity, prevents sand grains to run off, to stablize the piping dangerous situation.The normal filter blanket that adopts of prior art has sandstone filter blanket, tip material filter blanket and geotechnological journey fabric filter blanket: the sandstone filter blanket is applicable to the area of sandstone sufficient material source; have at the sheet of having cleared up on piping group's the area; bedding one deck coarse sand; spread handstone and big each one deck of stone on it more respectively; last gland slabstone or piece stone are protected.Tip material loaded filter bedding is spread fines such as wheat straw earlier during making, straw etc. repave coarse fodder such as reed, willow skill etc., upper berth straw mattress, seat sheet or reed mat then, tip degree alternating layers are laid like this, according to circumstances can spread one deck, use piece stone or earth bag gland then, floating to prevent tip material, prevent water burst band sand.Geotechnique's journey thing filter blanket needs behind the ground leveling of piping place, the dissipation head, and the worker's fabric that spreads a layer of clay repaves general permeable material or sand, last gland slabstone or piece stone.The piping dangerous situation is a weak part after this of wearing weak permeable loam in top layer or mucky soil when the artesian water of permeable sand-layer foundation top, and the destruction that concentration of local seepage flow forms is taken place.At this moment, surface soil layer forms a permeable cavity, the soil particle of permeable layer of sand is with the infiltration current hole that constantly gushes out, similar change diameter is ducted holds the sand water movement under the arm, and the particle diameter of the size in piping aperture, the kinetic head of holding the sand current under the arm, sand content and sand material is all looked seepage gradient, earth formation and sand grains particle diameter and be different.The water that it is different from when preventing the piping generation usually fills fluidised form.Therefore, when the piping dangerous situation of rescuing and protecting adopts filtering layer, need consider also that except that the factor of considering the failure by piping filtering layer layer holds in the kinetic head of sand current and the current factors such as entrained gravel particle diameter under the arm, more than preventing failure by piping filtering layer complexity.Three kinds of schemes of existing technology all need the implementer to accept the training of this respect in advance, and need certain practical experience.Simultaneously, these three kinds of technology all need at the scene bedding length by length, and speed is slow, and the actual needs of racing against time with the flood fighting scene has certain distance.

The utility model content

The purpose of this utility model is development and develops the commercialization filter bed of a kind of batch process of the piping dangerous situation of rescuing and protecting, this filter bed is with the industrial production of mass, produce complete filter bed, when needing filter blanket in the flood fighting, only need directly be routed to this filter bed on the good location of cleaning and get final product, it is convenient, rapid to lay, it can not only the permeable guarantor's sand and the dissipation flow of water, and can be because of distortion does not influence its characteristic, simultaneously, because of using repeatedly, can reduce the cost of flood fighting significantly.

Utility model is taked following design scheme: this flood fighting piping filter bed of rescuing and protecting is made of anti-filter cloth and the super absorbent resin material that two-layer polypropylene fibre or nylon fibre material are made into, two-layer anti-filter cloth periphery becomes up and down to sew up, middle circular or square stitching up and down, with the suture is that the boundary line forms inside and outside two cavitys, and the super absorbent resin material is filled in the peripheral cavity.

Because of middle cavity is not filled, water can see through, and fine sand and soil particle can not pass through, and super absorbent resin is the macromolecule absorber, it is characterized in that having high-hydroscopicity.The piping filter bed of rescuing and protecting uses front volume little, in light weight, deposits, convenient transportation, has identical functions with other filter bed.The high water uptake expansion resin that this product uses expands anti-filter bed all around and has waterproof and deformability, behind weights such as top pressurization stone, sand pocket, can make around the filter cloth and combine closely in ground, prevent current from around emerge, can only flow out from middle filter cloth, compare with similar products at home and abroad have make simple, the control valve characteristics such as saliva stream is more effective of gushing out.Because the filter cloth water permeability is less, fine sand is in the accumulation of outlet in addition, piping has been formed certain back-pressure, expanding bag top around filter cloth, the base adds formation such as sand pocket or imbibition type Flood-control bags and encloses well, raises piping outlet water level, reduce head difference, reduce leakage quantity, thereby reach the control piping, prevent the purpose of dike breaching.

Description of drawings

Fig. 1 represents side-looking structural representation of the present utility model

Fig. 2 represents the structural representation of facing of the present utility model

Among its figure 1, anti-filter cloth 2, anti-filter cloth 3, high hydroscopic resin 4 external cavities 5, periphery 6, middle 7, internal cavity

The specific embodiment

As shown in Figure 1 and Figure 2, the anti-filter cloth 1,2 that the utility model is made into by up and down two-layer high strength polypropylene fibre or polyamide fibre composite fibre materials, periphery 5 and middle 6 is sewed up up and down respectively, external cavity 7,4 in forming, external cavity also can be sewed up and be separated into a plurality of cavitys, dress high hydroscopic resin 3 in the cavity, do not adorn in the internal cavity, anti-filter bed also can be done squarely or toroidal, and inner chamber is sewed up also can do squarely or toroidal, and super absorbent resin is the macromolecule absorber.

Claims (1)

1, a kind of flood fighting piping filter bed of rescuing and protecting, the anti-filter cloth and the super absorbent resin material that are made into by two-layer polypropylene fibre or nylon fibre material constitute, it is characterized in that: two-layer anti-filter cloth periphery becomes up and down to sew up, middle circular or square stitching up and down, with the suture is that the boundary line forms inside and outside two cavitys, and the super absorbent resin material is filled in the peripheral cavity.