JPS58164811A - Flexible film product - Google Patents

Abstract

PURPOSE:To repair a flexible film without damaging its strength by using a system in which the abrasion losses of the flexible film can be detected before the abrasion losses reaches a strength member. CONSTITUTION:An abrasion detection layer 4 is provided to the outermost film layer of a flexible film rising and falling dam provided across a river on the river bed, by which the degree of the abrasion can be soon observed and repairing can be attained before the abrasion damage reaches cloth or cord layer 1 as resinforcing members. In this case, the abrasion detection layer 4 may be provided over the whole surface of a carpet or on the portion where abrasion is great, and a thin layer tinted differently from the outermost film layer 3 may be used. In this way, as the abrasion proceeds, different-color layer or cloth layer appears and thereby the degree of abrasion can be judged.

Description

[Detailed description of the invention] The present invention relates to a flexible membrane undulating weir.

In a flexible membrane undulating weir, a flexible membrane, such as a bag made of rubberized cloth (envelopment) forming the weir body, is attached to at least the riverbed in the direction across the river, and an inlet/exhaust weir (inlet/outlet) communicating with the inside of the bag is attached at least to the river bed in the direction across the river. Water) A fluid such as air or water as an expansion medium is sent from the tube to cause the bag to expand and stand up, and the fluid is discharged from inside the bag to cause it to contract and fall down (for example, Japanese Patent Publication No. 11702/1970, Japanese Patent Publication No. 4
4-2371).

As shown in Figure 1, the cross section of the main body membrane material of this type of conventional flexible membrane undulating weir, that is, the main body carpet, is approximately the outermost layer (3).
A flexible material such as rubber (2) laminated on cloth or cord (1).
) is covered with a flexible material of the same quality.

The thickness of the outermost film layer is, for example, 1 to 10+++ m.

For this reason, it is difficult to observe even if the outermost membrane material is worn and damaged due to rubbing against river boulders, quicksand, or the river bed surface, and is only noticeable when the wear and tear reaches the cloth or cord layer. In this case, the strength of the carpet decreases due to damage to the cloth or cord layer, so the strength is extremely unstable. Moreover, repair of such damage becomes complicated.

The present invention has been developed in view of the above problems, and is characterized in that the outermost layer is provided with a means for detecting abrasion of the outermost film layer, specifically, a means consisting of at least an abrasion detection layer. It is something. The present invention will be specifically explained below using Examples.

■ Add a wear detection layer to the outermost membrane layer.

As shown in Fig. 2, the outermost film layer (3) is provided with a wear amount detection layer (4) as described later, and the degree of wear can be immediately observed. ), it is possible to carry out repairs before reaching the point. Note that this wear amount detection layer may be applied to the entire carpet surface or only to areas where wear is severe, such as sludge areas. This wear amount detection layer may be, for example, a thin cloth layer (for example, 0.05 mm thick) made of a material different in color from the outermost film layer (for example, 0.05 mm thick).
1 tone thickness) may be used. As wear progresses through this layer, the degree of wear can be determined by the appearance of layers of different colors or the appearance of a cloth layer.

(2) A film layer provided with a wear amount detection layer is attached to the outermost film layer.

As shown in Figure 6, a membrane layer (6) with a wear detection layer (5) created separately from the outermost membrane layer (3) was attached to the outermost membrane layer (3). The degree of wear on the outermost membrane layer (6) can be determined from the amount of wear on the membrane layer (6). The structure of this wear amount detection layer (5) is the same as that of (1), and the film layer (6) formed thereon may be attached to the entire surface of the carpet or to a part thereof. FIG. 3 is a sectional view of the case where it is attached to a part of the carpet. The film layer (6) for detecting the amount of wear is the same as the outermost film layer (3) in order to make the degree of wear almost the same.

The present invention as described above has the following advantages because the amount of wear can be easily detected.

□ ■ The amount of wear □ can be detected before the wear loss reaches the strength member.
Repairs can be made.

■ If the wear detection layer is multi-layered, the amount of wear during a certain period is (3) As a result, the approximate wear life can be estimated.

Although the present invention has been described above in connection with a flexible membrane undulating weir, the present invention is not limited thereto and can be applied to cases where it is desirable to detect wear of the outermost layer of various flexible membrane products.

[Brief explanation of drawings]

In the drawings illustrating the cross-sectional views of the main body carpet of flexible membrane products, Fig. 1 shows the conventional conventional one, Fig. 2 and Fig. 3
Both figures belong to the present invention. (1)...cloth or cord, (2)...wrapping flexible material of cloth or cord, such as rubber, (3)...outermost membrane layer, (4)...wear detection layer, ( 5)...Wear detection layer, (6)...Membrane layer provided with the wear detection layer (4) Fig. 1, ? Figure 2 Figure 3

Claims (2)

[Claims] (1) A flexible membrane product characterized in that the outermost layer is provided with means for detecting wear of the outermost membrane layer. (2) The means for detecting wear of the outermost film layer is a wear detection layer provided in the outermost film layer.
Flexible membrane product described in item 1) (3) The means for detecting wear of the outermost membrane layer is a membrane layer provided with an abrasion detection layer prepared separately from the outermost layer, and is attached to the outermost layer. A flexible membrane product (4) according to claim (1) attached thereto, wherein the flexible membrane bag forming the weir body is attached to at least a river bed. Claim No. 1, which is an undulating weir made of a flexible membrane, which is installed in a direction across a river, and is configured to feed fluid as an inflation medium into the inside of the bag to cause it to expand and rise, and to discharge fluid from the inside of the bag to cause it to collapse and collapse. Flexible membrane products described in (1)