CN201745229U - Anti-seepage geotextile - Google Patents

Abstract

The utility model relates to geotextile, in particular to anti-seepage geotextile which is mainly used for dam seepage. The characteristics are as follows: the anti-seepage geotextile comprises a non-woven fabric layer (1) and a plastic layer (2); the non-woven fabric layer (1) and the plastic layer (2) are closely combined together; the non-woven fabric layer (1) is a puncturing nonwoven fabric layer. The anti-seepage geotextile has high tensile strength and extensibility; the tensile strength and anti-puncturing capacity are improved for the plastic film after the nonwoven fabric layer is combined with the plastic film, and the friction factor of the contact surface is increased due to the rough surface of the nonwoven fabric, and the stability between the geotextile and the soil protective layer is improved. Furthermore, the anti-seepage geotextile has good erosion resistance to bacteria and chemistry, and is free from erosion of acid, alkali, salt and the like.

Description

The antiseepage geotextiles

(1) technical field

The utility model relates to a kind of nonwoven, relates in particular to a kind of antiseepage geotextiles, is mainly used in dam body seepage.

(2) background technology

Before the utility model was made, dam body seepage in the past adopted plastic sheeting, mainly contains polyvinyl chloride (PVC) and polyethylene (PE).Dominant mechanism is to cut off the earth dam leak paths with the impermeability of plastic sheeting, bears hydraulic pressure and adapts to dam deformation with its bigger tensile strength and percentage elongation.But plastic sheeting surface smoother, and the coefficient of friction between the soil body is little, easily causes slippage, poor stability during use between the plastic sheeting and the soil body.

(3) summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of good stability, tensile strength and the strong antiseepage geotextiles of anti-puncture ability are provided.

The purpose of this utility model is achieved in that a kind of antiseepage geotextiles, it is characterized in that: it comprises nonwoven layer and plastic layer, and described nonwoven layer and plastic layer closely are combined with each other, and described nonwoven layer is the needle punched non-woven fabrics layer.

Compared with prior art, the beneficial effects of the utility model are:

The utility model antiseepage geotextiles; nonwoven has advantages of higher tensile strength and extensibility; it is with after plastic sheeting combines; the tensile strength and the anti-puncture ability of plastic sheeting have not only been increased; and because nonwoven surface is coarse; increase the coefficient of friction of contact-making surface, improved stable between itself and the soil body protective layer.Simultaneously, they have erosion resisting preferably to bacterium and chemical action, the erosion of have good effect in acid, alkali, salt.

(4) description of drawings

Fig. 1 is the section structure schematic diagram of the utility model antiseepage geotextiles.

Wherein:

Nonwoven layer 1, plastic layer 2.

(5) specific embodiment

Referring to Fig. 1, a kind of antiseepage geotextiles that the utility model relates to is composited by nonwoven layer 1 and plastic layer 2, and described nonwoven layer 1 is the needle punched non-woven fabrics layer.

Claims (1)

1. antiseepage geotextiles, it is characterized in that: it comprises nonwoven layer (1) and plastic layer (2), and described nonwoven layer (1) and plastic layer (2) closely are combined with each other, and described nonwoven layer (1) is the needle punched non-woven fabrics layer.

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