JP2794069B2 - Anchor construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an anchor construction method, and is particularly suitable for digging work on steep slopes and excavation surfaces where it is difficult to secure a drilling work space, and wall construction. Anchor construction method.

[Conventional technology]

Generally, the anchor method is performed by drilling a ground, inserting an anchor body, and injecting a cement paste or the like.

Conventionally, when anchors are installed on steep slopes or excavations, or when stabilizing slopes or preventing landslides,
As shown in the figure, it is usual to install a drilling machine based on the root incision or to temporarily set up a work scaffold or gantry facing the drilling surface and install the drilling machine on it Met. In the drawings, reference numeral 2 denotes a retaining material, 4 denotes a root-cut bottom or a temporary scaffold, 6 denotes a drilling machine, 8 denotes a drilling hammer, and 10 denotes a power facility.

[Problems to be solved by the invention]

However, when it is difficult to secure a working space in front of the drilling surface, or when performing construction on steep slopes such as landslide prevention work, a large scaffold is required. There was a problem.

In addition, when trees and the like are overgrown on the slope, the strength of the ground is reduced by extensive logging, and there is also an environmental problem.

The object of the present invention has been made in view of the above problems,
It is an object of the present invention to provide an anchor construction method that does not require a heavy machine such as a drilling machine to be disposed in front of a drilling surface.

[Means for solving the problem]

In order to achieve the above object, the anchor construction method of the present invention is an anchor construction method in earth retaining work such as a steep slope or excavation surface, in which a backhoe is located above the steep slope or excavation surface, and the tip of the backhoe is An anchoring method for drilling a steep slope or excavation surface with a drilling hammer attached to a work surface, wherein a workbench is attached to the drilling hammer.

[Action]

According to the above configuration, the backhoe is arranged on the ground above the steep slope or the excavation surface, and a work table is temporarily provided on the drilling hammer attached to the tip thereof so that the drilling operation can be easily performed.
Since a steep slope or a drilling surface can be drilled, a large-scale scaffold or the like for arranging heavy equipment in front of the drilling surface is not required.

Therefore, it is economical and can greatly shorten the construction period.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG.
After doing 54, set up the gantry 56 on the upper part,
58 is arranged, a clam sur (not shown) is removed from the tip, a drilling hammer 60 is attached, and a drilling hole 62 is formed.
The buried soil 54 may be applied last.

By adopting such a method, a large-scale scaffold or the like is not required in front of the earth retaining material 52.

In the example shown in the figure, a work table 64 is provided on the drilling hammer 60. In this way, even after drilling, operations such as insertion of the anchor body and injection of the cement paste can be easily performed.

An example in which this embodiment is applied to wall construction will be described with reference to FIG. FIGS. 2 (A) to 2 (E) show a series of construction procedures for wall construction.

First, as shown in FIG. 2A, an H steel 70 is piled on the slope 50. Next, as shown in FIG.
72 is buried, the buried soil 54 is backfilled, the wall 74 is laid as shown in FIG. 2 (C), and the anchor portion is removed from the box.

Next, the gantry 56 is installed on the upper part as shown in FIG. 2 (D), and the backhoe 58 is placed thereon as shown in FIG. 2 (E).
And anchoring is performed as described in FIG. Reference numeral 78 denotes an anchor after construction. FIG. 2 (F)
Indicates completion of the wall work as after the construction of the anchor portion 76.

According to this example, temporary construction work for anchor work can be largely omitted, and the accuracy of the anchor itself is not different from that of the conventional method.

〔The invention's effect〕

As described above, according to the present invention, by arranging the heavy equipment above the anchor construction part, considerable temporary construction work is omitted, so that the construction period is greatly reduced, and a very large economic effect can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a procedure of a construction example to which the present embodiment is applied, and FIG. 3 is an explanatory diagram showing a conventional example. 50 ... slope, 52 ... earth retaining material, 54 ... buried earth, 56 ... stand, 58 ... backhoe, 60 ... drilling hammer, 62 ... drilling, 64 ... work table, 70 ... H Steel, 72 ... horizontal sheet pile, 74 ... wall, 76 ... anchor, 78 ... anchor.

Claims (1)

(57) [Claims] 1. A method for anchoring a steep slope or excavation surface in an earth retaining work, wherein a backhoe is positioned above the steep slope or excavation surface, and the steep slope or excavation surface is drilled by a drilling hammer attached to a tip of the backhoe. An anchor installation method for drilling holes, wherein a work table is attached to the drilling hammer.