A RETAINING WALL METHOD OF PRECAST BLOCK TO PREVENT LANDSLIDE

Abstract

A precast H block (3) interlock each other to form sloping wall and similarly precast Y block (10) interlock each other to form straight wall, both block having a pin hole (4) through side walls. A wire rope (5) passing through said pin hole to make a wall strengthened by nailing horizontally (14) into the earth (8) adjacent to the block and vertically nailing (9) at top and bottom level. As well as wire rope (5) passing through said pin hole (4) of uppermost blocks, from underneath the road, to make a wall/barrier strengthened by nailing vertically (9) into the earth across the road (2).

Claims

1. A method for retaining a wall of precast blocks to prevent landslide, said method comprising the steps of: placing a plurality of precast blocks, having an H shaped configuration or a Y shaped configuration, in interlocking relation with each other vertically or horizontally thereby forming said wall, said plurality of precast blocks having a pin hole extending there through; and passing a plurality of wire ropes through said pin hole of said plurality of precast blocks and securing said plurality of wire ropes/metal strap/bar to the earth adjacent to said plurality of precast blocks for strengthening said wall, wherein said plurality of wire ropes are secured to the earth by nailing either vertically or horizontally.

2. The method as claimed in claim 1, wherein said plurality of precast blocks have an H shaped configuration or a Y shaped configuration.

3. The method as claimed in claim 2, wherein said plurality of precast blocks having said H shaped configuration are used to construct sloping walls, and said plurality of precast blocks having said Y shaped configuration are used to construct vertical walls.

4. The method as claimed in claim 1, wherein said wall is constructed using said plurality of precast blocks having one of a C shaped configuration, an S shaped configuration, and an E shaped configuration.

5. The method as claimed in claim 1, wherein said plurality of precast blocks are made from a material selected from a group consisting of reinforced concrete, concrete, mild steel, steel, steel fibre, stone, any type of sand, rubber, plastic and like.

6. The method as claimed in claim 1, wherein a single precast block row is fixed by nailing vertically to adjacent land or across the road.

7. The method as claimed in claim 1, wherein said plurality of wire ropes pass through said pin holes of the uppermost precast blocks of said plurality of precast blocks, from underneath a road, to strengthen said wall by nailing into the earth across said road.

8. The method as claimed in claim 1, wherein said plurality of wire ropes pass through said pin hole of the lowermost precast blocks of said plurality of precast blocks and is nailed vertically into the earth.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0045] Other aspects of the invention will become apparent by consideration of the accompanying drawings and their description stated below, which is merely illustrative of a preferred embodiment of the invention and do not limit in any way the nature and scope of the invention.

[0046] FIG. 1 illustrates the isometric view of the H and Y blocks.

[0047] FIG. 2 shows the schematic diagram of the wall made by H blocks.

[0048] FIG. 3 illustrates the cross-sectional diagram showing the application of H block for landslide and accident prevention.

[0049] FIG. 4 shows a Top view of the application of H blocks along turns in mountain pass.

[0050] FIG. 5 illustrates a cross-sectional view of a railroad using precast H block

[0051] FIG. 6 shows a cross-sectional view of a road using precast H block and Y block

DETAILED DESCRIPTION

[0052] The invention will now be described with reference to the accompanying drawing which does not limit the scope and ambit of the invention. The description provided is purely by way of example and illustration

[0053] Referring to the accompanied drawing a retaining wall method of precast blocks to prevent landslide in accordance with this invention is generally indicated by the reference numeral 17 and is particularly shown in FIG. 3, FIG. 4, FIG. 5 and FIG. 6 of the drawing.

[0054] FIG. 1 illustrates precast H and Y blocks made from reinforced concrete or any other suitable material. The H (3) or Y block (10) has two hollow pipes (4) passing through the vertical and horizontal centre, in both, the XZ and YZ plane. Ropes (5) pass through these holes for nailing purpose. The H blocks (3) interlock in each other vertically, to form a sloping wall, while the Y blocks (10) interlock vertically to form a straight wall. The depth of the central groove is the total height of the block, and its width is the total width of the block.

[0055] FIG. 2 illustrates the H blocks (3) interlocked vertically to form a sloping wall. Ropes (5) pass through the XZ plane, and are nailed in the YZ plane.

[0056] When we need there to be no gaps (here, along Y axis) between two blocks we can pass a rope through the hole in the centre of the block that is in the YZ plane through its entire width, along +X axis, and pass it through the same hole of the adjacent block, along X axis, and nail the two ends in YZ plane.

[0057] FIG. 3 illustrates the cross-section of a hill/mountain range (1), and a road (2). The H blocks (3) are nailed horizontally (14) into the earth so that it holds the gravel (7). The uppermost layer of H blocks however, is nailed vertically (9) into the earth with help of wire ropes/straps (5), across the road (2), from underneath it. This upper layer of H blocks (3) acts as the safety barrier that prevents the vehicles from crashing into the valley in case of accidents. Since the weight of the vehicle is acting on the ropes (5) passing from under the road, the desired support is acquired and it is highly unlikely for the vehicles to break through the blocks, into the valley. The lower two limbs of the upper H block interlocks with the upper two limbs of the lower H block, forming four layers of RCC precast material. The impact of the vehicles is absorbed by the initial layers and the remaining layers reduce the vehicle's momentum. Also, the impact gets transmitted through the ropes/straps (5) into the road (2), and into the earth (8) through the vertical nailing (9) across the road (2), as well as through the vertical (9) and horizontal (14) nailing adjacent to the said H blocks (3).

[0058] Such design of sloping blocks is being created to prevent pressure of landslide instead of straight vertical wall. Straight vertical wall cannot resist as much pressure as sloping H blocks (3). Each of the H block (3) has a circular hollow pipe (4) penetrating throughout the block which consist of steel wire rope (5) passing through every H block (3) in the row. This steel wire rope (5) is attached to the threaded pile which is being inserted deep inside the earth, thus supporting the H blocks. The thickness of the wire rope (5) depends upon pressure on each block and risk of the landslide considering height and slope of mountain (6). The threaded pile is also inserted vertically (9) into the earth increasing the firmness of the lowermost H blocks (3). Certain gap is being created due to thickness of wire rope (5) which is being looped around the wire that is passing through two H block (3). This gap also allows the excess ground water flow thus reducing the pressure on the block. It also acts like a screen which allows the flow of water and restricts the flow of pebbles/gravel (7).

[0059] If the hill slope (6) is gradual, H blocks are used (3a), whereas, if it is steep, Y blocks are used (3b). For varying slopes, a combination of H(3) and Y (10) blocks can be used. Also, the width and height of the H block (3) and its groove can be customised depending on the slope.

[0060] FIG. 4 illustrates the turns along in the mountain (1) pass the blocks are cast with sides at an angle so as to get a curved wall (11) when placed adjacently. This prevents vehicles from falling in the valley in the most accident prone areas i.e. on the turns. The ropes (5) pass across the road (2) from underneath it (9) for desired support. The impact of the vehicles is absorbed by the initial layers and the remaining layers reduce the vehicle's momentum. Also, the impact gets transmitted through the ropes/straps (5) into the road (2), and into the earth (8) through the vertical nailing (9) across the road (2), as well as through the vertical (9) and horizontal (14) nailing adjacent to the said H blocks (3).

[0061] FIG. 5 illustrates retaining walls made of interlocking H-blocks (3) are placed opposite to each other at a distance. The space between these walls is filled with stone gravel (7). The blocks opposite to each other are tied together with a rope/strap (5) passing through said pinholes (4) that forms a loop. Each pair of opposite blocks are tied for the entire length of the rail (12) & rail sleeper (13) and the lowermost blocks are nailed vertically (9) downwards into the earth (8).

[0062] FIG. 6 illustrates the retaining walls made of interlocking blocks are placed opposite to each other at a distance. The space between these walls is filled with stone gravel (7). The blocks opposite to each other are tied together with a rope (5) passing through said pinholes (4) that forms a loop. Each pair of opposite blocks are tied for the entire length of the road (2) and the lowermost blocks are nailed vertically (9) downwards into the earth (8). The uppermost H-blocks (3) are interlocked with Y-blocks (10)/H-blocks (3) that act as safety barriers for road traffic.