JP2001152431A - Damage repairing device for impervious sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate discovering method or repairing method of the damage water-leakage place of an impervious sheet, and conduct these methods, even when a reservoir is filled with water. SOLUTION: An impervious sheet, composed of the double sheets of a surface sheet and a rear sheet fixed by a partition wall, is divided in a grid shape, fixed in the upper sections of lattices and in the lower sections of the girds and opened in both side sections of the girds, and the side end sections of the opened impervious sheet are communicated with vent pipes installed in the side-section partition walls and constituted. Alternatively, the impervious sheet comprising double sheets of surface sheet and the rear sheet formed similarly into grid shape is fixed by both side sections of lattices, and opened in the upper sections of the lattices and in the lower sections of the grids, and the upper end section and lower end section of the opened impervious sheet communicate with vent pipes mounted in the upper partition wall and in the lower partition wall and constituted the impervious sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the detection and repair of damaged water leaking portions of a seepage control sheet used in civil engineering work.

[0002]

2. Description of the Related Art In recent years, as a method for repairing a reservoir, a seepage control sheet method that requires less embankment soil has attracted attention. In the past, the discovery of damaged water leaks in the impermeable sheet used for the reservoir was mainly done during the non-irrigation season, after discharging the water from the reservoir, removing the protection block and visually checking for damage. Repairing the parts required a lot of labor, time and expense, mainly because the sheets were directly dried and reworked by stacking. In addition, work was not possible when the reservoir was full.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for finding such a broken water leaking portion of a seepage control sheet.
The purpose is to facilitate the repair method.
It is another object of the present invention to enable the above operation even when the reservoir is full.

[0004] When the water-impervious sheet is doubled and the air is fed into the interior, the water-impervious sheet is deformed, and the protection block, which is the upper structure, rises and is damaged. In order to prevent the protection block from being damaged, it is necessary to divide the double water-impervious sheet into a lattice and fix the top sheet and the back sheet.

[0005]

According to the present invention, in order to achieve the above-mentioned objects, a water-impervious sheet consisting of a top sheet and a back sheet fixed by partition walls is divided into a grid, The upper part is fixed at the lower part of the lattice and is opened at both lateral parts of the lattice, and the lateral end of the opened impermeable sheet is configured to communicate with the ventilation pipe provided in the side partition. . Alternatively, a water-blocking sheet composed of a top sheet and a back sheet, also in the form of a grid, is fixed at both sides of the grid, and is opened at the top of the grid and at the bottom of the grid. The upper end and the lower end of the water sheet communicate with ventilation pipes provided in the upper partition and the lower partition.

[0006]

According to the above construction, air is supplied from the outside to the inside of the water-impervious sheet through the ventilation pipe, and the air flows out of the hole of the sheet where the water breaks, so that the air pressure does not increase. By detecting air leaks from the impermeable sheet due to the formation of air bubbles from the water, and by injecting consolidated material into the impermeable sheet through the ventilation pipe to prevent holes in the impermeable sheet from being damaged To repair.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Describing with the first embodiment, FIG. 1 is a plan view showing a first embodiment of the water impermeable sheet damage repairing device of the present invention, and FIG.
It is sectional drawing. Reservoir water 1 is stored by embankment 2, embankment 2 is provided with impermeable sheet 3, and protection block 5 is provided on the front slope. The water-impermeable sheet 3 composed of a top sheet and a back sheet, which are fixed by partition walls, is divided into a lattice shape, fixed at the upper part 6 of the lattice and the lower part 7 of the lattice, and opened at both lateral parts 8 of the lattice. The lateral end of the opened water-impervious sheet 3 is communicated with the ventilation pipe 4 provided in the side wall 9.

FIG. 3 is a plan view showing a second embodiment of the device for repairing breakage of a seepage control sheet according to the present invention, and FIG. 4 is a cross-sectional view. The water-impervious sheet 3 composed of a grid-like top sheet and a back sheet is fixed at both lateral portions 8 of the grid, and is opened at the upper portion 6 of the grid and the lower portion 7 of the grid. The upper end and the lower end of the impermeable sheet 3 communicate with the ventilation pipes 4 provided in the upper partition 10 and the lower partition 11.

[0009]

The present invention relates to a device for detecting and repairing a broken water leaking portion of a water impermeable sheet, wherein air is sent from the outside to the inside of the water impermeable sheet through a ventilation pipe to form a hole at the broken water leaking portion. It is possible to easily find a damaged leaking point due to more air flowing out, and also to easily repair a damaged leaking point by injecting a consolidated material from the outside and preventing holes in the damaged leaking point. Becomes possible. In addition, the above-mentioned air supply and infusing of the consolidation material can be performed at all times, and therefore, it is possible to find and repair a leak location of the impermeable sheet even when the reservoir is full.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a device for repairing damage to a seepage control sheet of the present invention.

FIG. 2 is a plan view showing a first embodiment of a device for repairing breakage of a seepage control sheet of the present invention.

FIG. 3 is a sectional view showing a second embodiment of the device for repairing breakage of a seepage control sheet of the present invention.

FIG. 4 is a plan view showing a second embodiment of the device for repairing breakage of a seepage control sheet of the present invention.

[Explanation of symbols]

 1 ・ ・ Irrigation pond water 2 ・ ・ Dike 3 ・ ・ Water barrier sheet 4 ・ ・ Vent pipe 5 ・ ・ Protective block 6 ・ ・ Upper of lattice 7 ・ ・ Lower of lattice 8 ・ ・ Horizontal part of lattice 9 ・ ・ side part Partition wall 10 Upper partition 11 Lower partition

Claims (2)

[Claims] 1. A water-impervious sheet composed of a top sheet and a back sheet fixed by partition walls is divided into a grid,
It is fixed at the upper part of the lattice and the lower part of the lattice, and is opened at both lateral parts of the lattice, and the opened lateral end of the impermeable sheet is communicated with the ventilation pipe provided in the side partition. Waterproof sheet damage repair device 2. A water-impervious sheet made of a grid-like top sheet and a back sheet is fixed at both lateral portions of the grid, and is opened at an upper portion of the grid and a lower portion of the grid. 2. The device according to claim 1, wherein the upper end and the lower end of the impermeable sheet communicate with the ventilation pipes provided in the upper and lower partitions. 3.