JPS6235690Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a porous water intake facility installed on the side of a water storage dam.

Water intake equipment installed on the side of a water storage dam includes so-called surface water intake equipment, which is controlled according to the water level of the dam and takes in the required amount of upper water, and perforated water intake equipment, which allows the intake port to be selected arbitrarily. Yes, and this invention belongs to the latter. By the way, as the above-mentioned porous water intake equipment, one having the structure shown in FIGS. 4 and 5, or one having a diagonal gutter having a large number of water intake ports, although not shown, is known. The water intake in these facilities can be selected arbitrarily, and water intake is performed by opening and closing a valve or gate provided in the water intake or the dam embankment.

However, when a valve is installed at the water intake, the shafts of the opening/closing mechanism are underwater, so inspection and
Replacement can only be done when the water level has fallen to the point where it is needed, and as shown in Figure 4, using the hydraulic cylinder that operates the gate underwater may cause pollution problems. It also becomes. Furthermore, as shown in Figures 5 and 6, when the water intake pipes are buried within the dam embankment, they must be installed before the dam concrete is poured, resulting in a structure that is not easy to replace. are duplicated,
Moreover, it is necessary to install the control room inside the dam embankment.
Furthermore, equipment with a diagonal gutter structure requires a long spindle to operate the gates for opening and closing each water intake, and has drawbacks such as the need to install a large control room on the dam.

The present invention has been made for the purpose of providing a water intake facility that can eliminate these drawbacks.
That is, the present invention forms a cylindrical space in the dam embankment near the water intake, connects each intake pipe with a pipe penetrating the cylindrical space, and installs a valve in each of the pipes in the cylindrical space. This invention is characterized by the interposition of the following, and will be described below based on an embodiment of the present invention shown in FIGS. 1 to 3.

Reference numeral 1 denotes a water intake section provided at a predetermined location on the side of the water storage dam 2, and a screen 3 is provided at the entrance to prevent miscellaneous objects such as driftwood from flowing into the intake section. 4 is the above water intake part 1
It is a cylindrical space formed vertically in the rear embankment of the dam 2, and its upper end is open to the upper part of the dam 2.
Note that this water intake section 4 includes a steel pipe 5 as illustrated in the figure.
The cross-sectional shape is not particularly limited, and may be formed by burying the partition wall, or may be formed by having a partition wall surface made of reinforced concrete. A suitable staircase 6 is provided within the cylindrical space 4 to facilitate valve operation and inspection and repair, which will be described later. 7 is a water intake pipe buried in the embankment at the rear of the cylindrical space 4 in parallel thereto, and a water guide pipe 8 is connected to the lower end of the water intake pipe 7.
Further, an air supply pipe 9 is arranged at the upper end.

10 forms water intake ports 11 that open at regular intervals in the front of the water intake section 1 described above,
It is a pipe that penetrates the cylindrical space 4 and communicates with the water intake pipe 7, and the valve 12 is connected in the cylindrical space 4.
are interposed respectively. Note that a preliminary valve 13 is provided in the piping 10 in the vicinity of the valve 12 to serve as a temporary blockage of the piping 10 when the valve 12 is repaired or replaced.

In the figure, 14 is a pipe forming an inspection passage leading from the cylindrical space 4 to the water intake pipe 7, and is normally closed. Further, 15 is an operation panel arranged above the opening of the cylindrical space 4, and 16 is a remote operation room.

The present invention has a structure as explained in the embodiments above, and when taking water, the desired purpose can be achieved by selecting an arbitrary pipe 10 and opening the valve 12. Since a space is formed and a valve is installed in the water intake pipe that passes through the space, maintenance, inspection, replacement, etc. can be carried out regardless of the water level. In addition, the simplification of the inside of the dam simplifies the concrete pouring process and piping, and it is also possible to inspect the water intake pipes and water conveyance pipes from the cylindrical space, that is, the dry area, and this area can be used as an operation room. There are effects such as being able to do it.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view showing an embodiment of the present invention;
Figure 2 is an enlarged vertical sectional side view of the lower end, Figure 3 is a plan view of Figure 2, Figures 4 and 5.
The figure is a longitudinal side view showing the conventional equipment, and Figure 6 is the 5th
FIG. 1 is a water intake part, 2 is a water storage dam, 4 is a cylindrical space, 7
1 is a water intake pipe, 8 is a water conduit, 10 is piping, 11 is a water intake, and 12 is a valve.

Claims (1)

[Scope of utility model registration request] A cylindrical space is formed vertically in the embankment near the water intake formed in the dam, and piping passing through the cylindrical space communicates with each water intake and the water intake pipe in the embankment, and each of the above-mentioned piping inside the cylindrical space is connected to the pipe. Porous water intake equipment with valves installed.