JPS6334242B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for excavating a paved road, which is used when burying a water pipe or the like in the paved road.

Generally, work to bury water pipes in paved roads must be done at night when traffic is interrupted. Therefore, conventionally, first, two grooves with a groove width of 30 mm to 50 mm were cut on the pavement surface with the necessary interval, using a cutter.
Next, after the pavement layer between both grooves was destroyed and peeled off using a breaker, the destroyed materials were discharged, and the dents in the pavement layer where the pavement layer had been peeled off were then backfilled with crushed stones, etc., the road surface was temporarily restored, and the night work began on the first day. The method was to remove the crushed stones, excavate a groove in the roadbed, and bury water pipes in the groove as night work on the second day, but the work was complicated and inefficient. The cut groove width was wide, so even if the groove was backfilled with crushed stone, etc., there was a drawback that it was a hindrance to the passage of cars, motorcycles, bicycles, etc.

The purpose of the present invention is to provide a new paved road excavation method that simplifies and improves the efficiency of the work. An appropriate number of grooves are made at small intervals so that the pavement layer can be easily peeled off, and then as part of the work on the second day, the pavement layer in the area where the grooves have been made is divided from the grooves. The process involves stripping and then making the necessary excavations in the roadbed.

The details of the present invention will be explained below with reference to drawings showing an example of a method for excavating a paved road for burying water pipes.

First, as night work on the first day, as shown in Figure 1, water pipes were buried in the pavement layer 1 of the paved road using a pavement cutting machine equipped with a cutter disc with cutting bits protruding from the periphery of the disc. A large number of cut grooves 2 having a considerably wide groove width of 30 mm to 50 mm cut into almost the entire thickness of the pavement layer 1 within the range of cut groove width d for...
are cut parallel to each other at small intervals, thereby dividing the pavement layer within the range of the cut groove width d into a large number of ridge pavement blocks 1' divided by the cut grooves 2 . The intervals between the grooves 2 and the widths of the paving blocks 1' are such small intervals or widths of 200 mm to 250 mm that the paving blocks 1' easily peel off from the roadbed 3.

Cutting sludge 4 generated when cutting grooves 2 .

Then, as shown in the second figure, the cutting sludge 4 is backfilled into the kerf groove 2, and the work for the first day is completed. The pavement layer in which cut grooves 2 have been backfilled with cutting waste in this way has almost no hindrance to the passage of cars, motorcycles, bicycles, etc.

Next, on the second day's night work the day after or several days after the first day's work, the paving blocks 1'... are peeled off from the subgrade 3 using a bucket and removed, and then the exposed subgrade 3 is removed. A groove 5 of a predetermined width and depth is cut as shown in the third figure, and the groove 5 is
Water pipes will be buried inside. The above paving block 1'...
...The peeling work is easily done.

As another embodiment of the present invention, the pavement layer is provided with the parallel grooves 2 in the above example and a large number of other parallel grooves that intersect with these parallel grooves 2..., thereby forming the pavement layer into a large number of parallel grooves. An example can also be obtained in which the pavement is divided into pillar-shaped pavement blocks and the other configurations are substantially the same as the above example.

According to the paved road excavation method of the present invention, it is possible to omit the operations of breaking with a breaker on the first day, discharging debris, and inserting crushed stones in the conventional method, and the pavement layer can be easily peeled off. The entire work has been greatly simplified and can be made extremely efficient, and what's more, the work has been completed by 30mm to 50mm after the first day's work.
Pavement surfaces made by backfilling cutting waste into fairly wide grooves, such as kerosene, etc., not only have almost no hindrance to the passage of cars, motorcycles, bicycles, etc., but are also easier to pass through than temporary restoration roads made with conventional methods of putting crushed stone in. It also has advantages that are advantageous to the user, and its value in use is extremely high.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a partial sectional view of a paved road with cut grooves, Fig. 2 is a sectional view of the same with the cut grooves backfilled, and Fig. 3 is a cross-sectional view of the same with grooves cut in the roadbed. It is a sectional view of the same as the above after excavation. 1...paving layer, 1'...paving block, 2...
kerf.

Claims (1)

[Claims] 1. As work on the first day, an appropriate number of fairly wide grooves are cut at small intervals within the required range of the pavement layer so that the pavement layer can be easily peeled off. As a result, the pavement layer is divided into an appropriate number of pavement blocks, and the gaps created during the cutting are then backfilled into the grooves.Then, as part of the work on the second day, the pavement blocks are peeled off, and then the pavement is laid on the subgrade. A method for excavating a paved road characterized by performing the required excavation.