JPH07310325A - Stable cylinder on ground surface - Google Patents

Abstract

PURPOSE:To increase the construction efficiency, by applying a a water-swelling material on the inner wall of cylinders (pile), in which hollow cylindrical bodies are connected together for vegetation as well to protect the slope and swelling the material after they have been buried, to increase the resistance against pulling-out. CONSTITUTION:A water-swelling material 2 is applied on the inner wall face of hollow cylindrical driving tools 1 (cylinder) in order to protect a slope or a river bed from scouring or collapse. The driving tools 1 (cylinder) are pushed in the ground while pressing, by the use of devices used for the slope tamping after the slope tamping work on the filling slope of a developed land has been finished. The cylinders 1 may be bundled to form a mat having a specified size. The water-swelling material 2 swells in the ground and increases the resistance against pulling-out to prevent from slipping off. It allows vegetation to grow in the hollow parts. In this way, the construction of a slope can be carried out efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for stabilizing the ground surface by protecting bare slopes of rivers, riverbeds, and the ground surface of parking lots against running scouring and collapse.

[0002]

2. Description of the Related Art Conventionally, as a technique for holding the ground surface, there have been methods such as concrete block, method frame, spraying of concrete material, pavement and seed spraying.

[0003]

These have some of the following drawbacks. (B) The ability of rainwater to penetrate into the ground is reduced. (B) The constrained depth of the stratum is shallow, and it is easy to scour with running water or collapse the sediment. (C) It is difficult to grow plants stably in the soil. (D) A long construction period has been required because construction must be carried out according to the progress of landfill while waiting for progress. The present invention has been made to solve these drawbacks at the same time.

[0004]

[Means for Solving the Problems] A large number of hollow cylinders having a large frictional force with the soil are bundled on the ground surface and integrally penetrated.

[0005]

[Function] The penetration layer protects the stratum from the collapse of the strata by water and other external forces flowing on the surface. The water swelling material applied to the inner wall of the cylinder expands due to the water content in the soil and resists extraction. In addition, vegetation is allowed because the ground surface is bare land. Since the tools can be made light, embankments can be constructed in a short period of time.

[0006]

[Example] The product of the present invention has an inner diameter of 10 to 20 cm and a wall thickness of 1 cm.
A cylinder or a polygonal cylinder having a length of about 10 to 20 cm in the front and rear is used as an element, but it is easy to use a mat-like one having a total length of about 1 m by bundling these. Next, an example of use for protecting the embankment slope of a residential land development site will be described. At the stage of finishing the slope forming work called dust hitting, the product of the present invention is laid and pushed in while pressurizing with the equipment used for hitting dust. If the material of this product is plastic, it is cheap and convenient, but if it is difficult to make the surface rough, apply a water swelling material to the inner surface of the cylinder to increase friction with the soil.

[0007]

INDUSTRIAL APPLICABILITY The present invention is manufactured in a shape as shown in FIG. 1, and is installed on the surface of the ground at the site and penetrates into the formation by hitting, etc. can do. At the same time, since the soil is exposed, the penetration of rainwater is promoted, and plants can be grown on the surface, which has the effect of restraining the soil in a much deeper area than the conventional slope.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a partially cutaway view of the present invention.

[Explanation of symbols]

1. Cylinder 2. Water swelling material 3. Clip 4. Pull-out resistance protrusion

Claims (3)

[Claims] 1. A surface stabilizing method in which a hollow cylindrical tool is penetrated to restrain a stratum in order to protect the slope of an uncovered soil, a riverbed, or the ground surface of a parking lot from running scouring or collapse. 2. A method of applying a water-swelling material for preventing pulling-out from the inner wall of a hollow cylinder. 3. A method of increasing the efficiency of construction by bundling a plurality of hollow cylinders and integrating them.