JPS5910463B2 - Hollow pipe burial method for pillar construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves drilling holes from the pavement surface into the ground using a power drilling machine, forming a water-permeable part made of aggregate at the bottom of the hole, and forming an impregnation made of clay or the like in the upper part of the water-permeable part. A permeable layer is formed, cement milk or cement mortar is placed on the layer, and before the milk or mortar hardens, a bottomed pipe is inserted into the hole and the bottom of the pipe is brought into contact with the impermeable layer. This relates to a hollow pipe burying method characterized by subsequently drilling a water passage hole from the bottom to the water permeable part, and the purpose is to quickly and easily construct a water permeable pipe hole for pillar erection on a paved surface. It is.

Conventionally, when constructing a buried pipe hole for erecting a removable support such as a liftable support for a car stopper chain shelf or a removable support for a fence, etc. on the existing concrete pavement, asphalt pavement, block pavement, or tile pavement, etc. Chilling and removal of existing pavement, manual digging of holes, laying of chestnut stone and gravel, pipe erection, backfilling of earth and sand, centering, pounding and hardening of backfill earth and sand, formwork construction, concrete pouring, formwork It requires a lot of labor and complicated processes such as removal, backfilling and paving around the concrete, and disposal of the remaining soil, and during the construction period, it is not only necessary to close parking lots and gas stations and restrict entry, but also to close down parking lots and gas stations, etc. There was a defect in which rainwater, drainage water, etc. were trapped and it was difficult to eliminate.

To explain the embodiment of the present invention shown in the drawings, a perforation core is marked at a predetermined position on a paved surface 1, and a drifter guide 3 is vertically rolled down and supported at the tip of a crane poom 2. Drifter 4 supported so that it can be raised and lowered freely
A hollow rod 5 is attached to the rod 5, a bit 6 with a diameter of 150 mm is installed at the lower end of the rod 5, and the drifter 4 is operated to drill a hole 7 approximately 2 m deep from the drilling core in the vertical direction from above the paved surface 1. perforate.

The drilling time was about 3 minutes. Aggregate, that is, balas 8, is put into the hole 7, and sand 9 is put on top of the balas 8 to form a permeable part 10, and then clay is put in and pounded and hardened to make it adhere to the surrounding soil to form an impermeable layer. 11.

In this state, when cement milk or cement mortar 12 is injected or thrown into the hole 7, the milk or mortar 12 will not penetrate into the aggregate 8.9 below because of the impermeable layer 11.

Next, the bottom part 13 is made of wood or synthetic resin with an inverted conical cap.
Pipe 15 (outer diameter 140 mm) glued with adhesive 14
is inserted into the hole 7 from the bottom part 13 before the milk or mortar 12 hardens, and when the bottom part 13 contacts the impermeable layer 11, the milk or mortar 12 rises through the gap between the inner surface of the hole 7 and the outer surface of the pipe 15. and fills the same gap.

Then, when the upper end surface of the pipe 15 is hit with a mallet 16, the bottom portion 13 enters the impermeable layer 11, and the upper end surface of the pipe 15 matches the level of the paved surface 1.

After that, a so-called gimlet 18 having a perforation spiral 17 at its tip is inserted into the bottom part 13 and the gimlet 18 is manually pushed down and a water passage hole 19 is bored in the bottom part 13 and water permeates through the water passage hole 19. This will lead to Part 10.

The mortar 12' (FIG. 7) overflowing onto the paved surface 1 is removed and finished.

In the present invention, a prop for preventing vehicle entry that can be raised and lowered or that can be attached to the fence is inserted into the buried hollow pipe 15, and the prop is inserted into the buried hollow pipe 15, and the prop is inserted into the buried hollow pipe 15. The pillar will be raised and fixed from No. 15, and a fence or fence will be attached to the pillar to close off the vehicle access road.

As described above, the present invention operates from the paving surface 1 to the power drilling machine 4.5.
Since the holes 7 are drilled in the ground by the hole 6, the holes 7 can be easily drilled into the rock or concrete pavement surface 1, and the permeable layer 20 deep underground can be easily drilled.
(Fig. 3), the hollow pipe 15 for pillar erection can be buried quickly, and the hollow pipe 15 for pillar erection can be quickly buried. This has the effect of providing a pillar hole that does not trap water.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the drilling state of the hollow pipe burying method for pillar erection according to the present invention, Fig. 2 is a partially enlarged vertical cross-sectional view of the bottomed pipe, and Fig. 3
The figure is a vertical cross-sectional view of a state in which a permeable part and an impermeable layer are formed in a hole, Figure 4 is a vertical cross-sectional view of a state in which cement milk or mortar is poured, and Figure 5 is a vertical cross-sectional view of a hollow bottomed pipe driven in.
FIG. 6 is a longitudinal sectional view of the water passage hole in a state where it is drilled, and FIG. 7 is a longitudinal sectional view of the water passage hole in its open state. 1...Paved surface, 4...Power drilling machine, 7
...hole, 8.9 ... aggregate, 10 ...
... Permeable part, 11 ... Impermeable layer, 12 ...
... Cement mortar, 15 ... Bottom pipe, 13 ... Bottom, 19 ... Water hole.

Claims (1)

[Claims] 1. A hole 7 is drilled from the pavement surface 1 into the ground using a power drilling machine 4, and a water-permeable part 10 made of aggregates 8 and 9 is formed in the lower part of the hole 7, and the water-permeable part 10 is An impermeable layer 11 made of clay or the like is formed on the upper part, cement milk or cement mortar 12 is placed on the layer 11, and a bottomed pipe 15 is inserted into the hole 7 before the milk or mortar 12 hardens. same pipe 15
The bottom part 13 of is in contact with the impermeable layer 11, and then the bottom part 13
A hollow pipe burying method characterized by drilling a water passage hole 19 from the hole to the water permeable part 10. 2. The hollow pipe burying method according to claim 1, wherein the aggregates are balance 8 and sand 9. 3. The hollow pipe burying method according to claim 1, wherein the bottom portion 13 is formed of an inverted conical cap made of wood or synthetic resin.