JPS6013105A - Sheet cover for bottom under water - Google Patents

Abstract

PURPOSE:To prevent the falling down and scattering of rubbles by stabilizing a sheet by a method in which one side edge of the sheet is fixed by the rubbles, a trough-like outside receiver is formed on the free end edge of the sheet, and a trough-like inside receiver is formed in parallel on the surface of the sheet. CONSTITUTION:Rubbles 4 are laid on the bottom and its neighboring places of an underwater structure 3 above a soft sheet 2, and one side edge 5 of the sheet 2 is fixed. The lower projection 7 of a trough-like outside receiver 6 made of an elastic and soft sheet is fixed to the free end edge 8 of the sheet 2 and connected with a connector 9. An inside receiver 10 similar to the outside receiver 6 is fixed to the surface of the sheet 2 in parallel with the outside receiver 6 and connected with a connector 12. The scouring of soil and sand below the sheet can thus be prevented, the falling down of rubbles can also be prevented, and no troubles arise in the navigation of ships.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention fixes one side edge of the sheet by laying rubble at and near the bottom of an underwater ri structure on a flexible sheet covering the underwater bottom, and A gutter-shaped outer receiver opening toward the underwater structure is formed at the free end edge of the sheet, and one or more gutter-shaped inner receivers opening toward the underwater structure are parallel or substantially parallel to the outer receiver. This relates to an underwater bottom covering sheet formed on the surface of the sheet on the underwater structure side of the outer receiver, and the outer receiver formed on the free edge of the sheet is buried in earth and sand by burying the sheet in a curved manner. In addition to stabilizing the sheet, rubble falling on the sheet can be caught by the outer receiver and the inner receiver to prevent it from falling into waterways or being scattered.

Conventionally known underwater bottom damaged sheets with hard gutter-like bodies formed on the free edge of the sheets are such that when rubble is dropped onto the underwater bottom covering sheet, the rubble falls onto the sloping sheet and forms a hard gutter-like body. The free end of the sheet becomes heavy, and the water waves scour the earth and sand on the bottom of the heavy hard trough-like body, and the edge of the sheet swings, causing the heavy hard trough-like body to move. However, the present inventors had the disadvantage of burying the sheet in the earth and sand, losing the effect of preventing the rubble from falling and causing the rubble to fall into waterways, filling the waterways and obstructing the NLRJ line. As a result, we have obtained the present invention which does not have these drawbacks.

Below, embodiments of the present invention will be described with reference to the drawings.
Thickness 2~101n71, length and width 8~15
Rubble stones 4 are laid on one side of the sheet 2 at the bottom and near the bottom of an underwater structure 3 such as a breakwater, quay, or wave-dissipating block on a flexible sheet 2 such as a polyvinyl chloride sheet of X8 to lQ m. The edge 5 is fixed, and the protruding portion 7 of the gutter-shaped outer receiver 601 is made of an elastic and flexible sheet such as a polyvinyl chloride sheet with a thickness of 2 to 10 mm and has an opening in the underwater structure 3 ft 11. 2, and the upper end edge of the outer receiver 6 and the sheet 2 are connected in places by connecting bodies 9 such as ropes and chains,
One or more inner receptors 10 similar to the outer receptor 6 opening toward the underwater structure 3 are placed parallel to the outer receptor 6 or parallel to F6. II receptor 6 and underwater structure 3
Lower protrusion 1 of inner receiver 10 on the surface of sheet 2 between
1 is fixed with a bath coat or other fixing means, and the inner receiver 1 is fixed.
0 and the sheet 2 with connecting bodies 12 such as ropes, chains, etc.
Preferably, a heavy object flexibly connected is inserted into the outer receiver 6, or rubble is thrown into the outer receiver 6. This prevents the receiver 6 and the inner receiver 10 from collapsing to the opposite side of the underwater structure 3.

The present invention uses an outer receiver 6 formed on the free end edge 8 of the flexible sheet 2 to generate turbulence and vortices in the water waves in this part, swing the free end edge 8, and wash the earth and sand on the lower surface. JVi! l
The sheet 2 is immersed with the free end edge 8 in the earth and sand, and the sheet 2 is buried to a certain extent and stabilized, and no further burying occurs, especially in the outer receiver 6. If a flexible heavy object is present in the free edge 8, the free edge 8 will be quickly buried in the earth and sand.

In the present invention, rubble 4 is laid at the bottom of the underwater structure 3 on the flexible sheet 2 covering the underwater bottom 1 and in the vicinity thereof, one side edge 5 of the sheet 2 is identified, and an opening is opened on the side of the underwater structure 3. A gutter-shaped outer receiver 6 is formed on the free end edge 8 of the sheet 2, and a gutter-shaped inner receiver 10 with one or several r-supporting strips opening toward the underwater structure 3 is formed parallel to the outer receiver 6. Alternatively, it is an underwater bottom covering sheet formed approximately in parallel on the surface of the sheet 20 on the underwater structure 3 side of the outer receiver 6, and formed on the free end R8 of the sheet 2,
The gutter-shaped outer receiver 6 that opens in the direction of the underwater structure 3 causes turbulence and vortices in the water waves near the outer receiver 6,
The earth and sand at the bottom of the outer receiver 6 is scoured, and the outer receiver 6 is buried in the earth and sand by curving the tip of the sheet 2, and the sheet 2 is fixed at both ends to make it stable. It is possible to prevent scouring of earth and sand on the lower surface, and after the outer IP, t+ receiver 6 at the tip of the first layer is buried in the soil body, the sheet 2 is inserted by the inner receiver 10 of - strip or multiple strips. This prevents the upper rubble 4 from falling into waterways, etc., and does not impede the navigation of ships, and furthermore, the outer receiver 6 and inner receiver 10 can be temporarily submerged by water gates and waves. Although it collapses to the side of the scoop 3, it immediately recovers due to the elasticity of the inner support 6 and the inner support 100, restoring its scour action and rubble receiving action.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the device in use, and FIG. 2 is a partial plan view. DESCRIPTION OF SYMBOLS 1... Water bottom, 2... Sheet, 3... Underwater structure, 4... Rubble, 5... -side edge, 6... Outer receiver, 7... Lower protrusion, 8... Free edge, 10.
...Inner receptor applicant: Sansuisan Hikari Co., Ltd. agent Mutsumi Nozawa Aki

Claims (1)

[Claims] -fII of the sheet is laid by laying rubble at the bottom of the underwater melt on the flexible sheet coated with the bottom of the water and in its vicinity.
A gutter-shaped outer receiver opening toward the underwater structure is fixed at the I edge, and a gutter-shaped outer receiver opening toward the underwater structure is formed at the free end edge of the sheet, and one or more groove-shaped inner receivers opening toward the underwater structure. is formed on the surface of the sheet on the underwater structure side of the outer receiver in parallel or substantially parallel to the outer receiver.