JPS5954874A - Method of construction of installation of steel penstock in tunnel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a one-pipe installation method for water pressure in a fan road.

In recent years, the development of small hydropower plants has become more popular.
In many cases, penstocks are laid underground. This is because exposing the penstock to the surface could lead to environmental destruction. By the way, when laying the penstock of the small hydropower station I underground, a small-diameter hydraulic steel pipe with a diameter of 1 to 2 nT is carried into the tunnel. A conventional method of installing this penstock pipe will be explained with reference to FIGS. 1(a) and 1(b). In the conventional penstock installation method, for example, a rail (2) is installed on the floor of a sloped side street () (note that it appears horizontal on the drawing) that goes down to the bottom of the tunnel. The hydraulic 1111 pipe (4) (i-4/N9) is run on the rail (2) via the famous car (3) by its own weight. At this time, the bogie (3
) At the rear end is a winch (not shown) installed on the mine entrance side.
One end of the I-wire lobe (5) is locked, and the water pressure 4-gauge pipe (1) is controlled to move while the S
The existing pipe (6) in the road (1) will be transported and installed.However, the existing pipe (6) in the road (1) will be transported and installed.
Since the i-side is originally set small, GIJRI
Installing the rail (2) on the floor of the land road (1) or placing the platform 11 ((3) on a sled, as in the Snake method, limits the work space and makes it difficult to install the penstock pipe (4). work τ
The problem was that it was not easy to do.

The present invention aims to solve such problems,
When laying a penstock underground, a mole rail rail is installed on the ceiling of the driveway along the length of the opening, the penstock is hung from the rail so that it can run freely, and it is transported to the required position within the circuit. We provide the installation work of penstock pipes in the penstock, which is a feature of our operations.

The objective is to be achieved by doing this: To be able to take up more work space within the Satsuma road and to facilitate the installation of hydraulic steel and pipes. It is something that can be done.

Hereinafter, the method of the present invention will be explained in detail based on the drawings showing one embodiment thereof. In Figures 2(a) and (b):
(7) is an inclined circuit that goes downwards at the back (in addition,
(It appears horizontally on the drawing.) First, as shown in the diagram, 5 Zuido (7
) ceiling (7A), along the longitudinal direction next to the mole rail, -le (1'l) l:, anchor bolt (9)
It will be constructed using Next, for the molar rail of ni=ko, -
The small-diameter water pipe 11 (11) is hung freely on the penstock pipe (8) via the hook (b), and the penstock OQ
Then, one end of the wound wire lobe 0→ is secured to a winch (not shown) installed on the mine entrance side. In addition, since the small diameter water pressure pipe OQ has a small diameter, it is easy to stack it, so
It can be easily hung on the rail (8). next,
When transporting and installing the penstock (11) to the existing pipe (0) in the circuit (7), use a winch to gradually let out the wire (11) and allow it to run under its own weight. While controlling the hydraulic field pipe OI, the existing pipe (1
;Carry it to the front of 11゛■-□. Next, the transported water pressure fh mark 0 (＞・) and the existing ￥10. The installation of the existing pipe Q3 is done by setting the length to match the height of the water pressure #1 pipe (II) to be transported, and then increasing the water pressure from the hook αρ to the water pressure f for 1 s.
A. Alignment can be easily performed without removing the tube 01. After the connection work is completed, the wire lobe 0Q is removed from the hydraulic steel pipe 0Q, and the embedding work around the water pressure mwatt is performed.

C(7) when mol rail. It is also possible to embed both the cover (8) and the hook Q.

,,In addition, in the above example, since the case of IJJ oblique tunnel (inclined shaft) was used as an example, the penstock pipe (Ill will run through the hook (till) due to its own weight, but the horizontal In the case of a mine (J does not run under its own weight, use an endless wire instead of the wire lobe a→).

A boob is installed below the end of the existing W (to) and the penstock pipe θ (
) may be wound around the boar, and this may be placed on the mine entrance side and pulled in with a winch.

As described above, according to the method of the present invention, the rail for the mole rail is installed on the ceiling of the circuit, and the hydraulic steel pipe is suspended from the ceiling for transportation, so there are no rails or carts on the floor of the circuit, and the A large work space can be taken up in Hokkaido, making it easy to install penstock pipes. Moreover, if the penstock pipe is transported to the required location within the road, will the penstock pipe be suspended from the mole rail and connected to the existing pipe?
Since the connection is deaf, alignment can be easily performed.

[Brief explanation of drawings]

Figure 1 shows the conventional v)l! a To explain the Hokkaido hydraulic steel and pipe installation methods? In the figure, FIG. 1(a) is 44. Figure 1 (bl) is a cross-sectional view of (a), Figure 2 is a diagram for explaining the in-way water pressure fi41 installation method according to the present invention, and Figure 2 (a) is Vertical section of the circuit, Figure 2 (b)
is a cross-sectional view of (a). (7)・・・・・・Detour 1. (,,,7A)...
・・・・・・Circuit ceiling, (8)・・・Mole rail, θQ・・・・・・Small diameter water pressure 4-word pipe. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. When laying a penstock underground, install a mole rail rail along the longitudinal direction of the penstock on the ceiling of the driveway, hang the penstock pipe from the rail so that it can run freely, and move it to the required position within the penstock. A penstock installation method that requires transport and installation.