JP2003064640A - Water intake and discharge facilities for reservoir - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide water intake and discharge facilities for a reservoir or the like in which cost is suppressed by making the whole structure simple and workability at the time of emergency and maintenance control are easy. SOLUTION: The water intake and discharge facilities are formed on the inner inclined face of a levee body of the reservoir 1. The water intake and discharge facilities for the reservoir is comprised in such a manner that a lid plug 9 is provided freely swingingly to an emergency discharge gate 8 set at the lower position of a water introduction base body 4, a base end part of a traction cable 10 connected to the lid plug 9 is connected to an opening/closing device 12 on the levee body through inside a protective conduit 11 provided on the inclined face of the water introduction base body, and a plurality of anti-rubbing members are fitted externally and mounted to the traction cable 10 in the protective conduit 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water intake / discharge facility installed in, for example, an agricultural pond, and particularly, the overall structure is simplified to reduce costs, workability in an emergency is excellent, and maintenance is easy. Regarding water intake and discharge facilities.

[0002]

2. Description of the Related Art Conventionally, in an agricultural pond, when a crack occurs in the dam body immediately after the earthquake, the water in the pond infiltrates into the crack two to three days after the earthquake, causing the dam body to collapse. Based on the experience that there is a lot of water, there is a water discharge capacity that can safely drop the water level in the reservoir to a predetermined water level in one day for the purpose of protecting the dam body from collapse and flood disasters immediately after the earthquake. Equipment of "emergency discharge gate" is obligatory.

[0003] In order to ensure the safety of the bank body, it is empirically said that the objective can be achieved by making an emergency descent of about 2 m per day from the full water level at all times. In these discharge ponds, which are formed on the inclined surface inside the dam body, the slant gate (slide gate for fan type, spindle opening / closing device for opening / closing device) installed on the slope of the water transfer base is Generally, the spindle is opened and closed by operating the spindle opening / closing device installed on the upper part of the bank, and the slide gate is moved up and down along the guide to open and close the floodgate. There is.

[0004]

The above-mentioned water intake / drainage equipment used in conventional reservoirs has the same structure as the floodgate of a large dam, and the means for controlling the operation of the spindle switch is complicated. However, there was a problem that the workability in an emergency was poor. In addition, there is a problem that equipment costs and maintenance costs are high.

Further, when there is a ground movement (subsidence, ground crack, etc.) due to an earthquake, a long spindle bends in the middle and does not move, which makes it impossible to open and close the gutter gate, making emergency discharge impossible. There were problems such as yes. The present invention has been developed for the purpose of providing a water intake / water discharge facility such as a pond that is easy to operate and maintain with a simplified overall structure.

[0006]

In order to solve the above-mentioned problems, the present invention has taken the following means.

(1) A water intake and discharge facility formed on an inclined surface of a levee inside a reservoir, in which an emergency discharge gate set at a position below a water transfer base is provided with a lid plug swingably. The base end portion of the tow line connected to the lid plug is connected to the opening / closing device on the dam body via the inside of the protective conduit arranged on the slope of the water guiding base, and the tow line is connected in the protective conduit. Is a water intake and discharge facility for a reservoir that is fitted with multiple anti-friction members.

(2) A plurality of the anti-rubbing members are arranged in a beaded shape, and fixing jigs fixed to the tow line are arranged at both ends of the anti-rubbing member. The water intake and discharge facility of the reservoir described in (1) where movement is restricted.

(3) In the lid plug, a wire guide having a substantially U-shaped cross section and an arcuate side surface is formed at a central portion of an upper surface and is formed at a lower portion of the tow line (1) or (2). The water intake and discharge facility of the reservoir described in

(4) In the lid plug, a lever is swingably attached to a free end of the lid plug, and a tip end of the tow cord is connected to a tip end of the lever (1) to (3). The water intake and discharge facilities of the reservoir described in either of the above.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described. FIG. 1 is a vertical sectional side view of a water intake and discharge facility of a reservoir showing the entire arrangement, and FIG. In the figure, Tameike
(1) is stopped by the bank (2). Inside the levee body (2), a water guiding base (4) having a water discharge channel (3) in the lower part is arranged.

In the water-conducting substrate (4), a stepwise main portion
In (5), a plurality of discharge gates (6) are formed in the vertical direction,
Each lower part thereof is configured to communicate with the discharge channel (3). Each discharge gate (6) is capped with a lid (7). A traction cord (not shown) is connected to each lid plug (7), and the lid plug (7) is gradually opened by pulling the traction cord from above the levee body (2). It is configured to take water.

A water-conducting substrate (4) located near the bottom of the reservoir (1)
An emergency discharge gate (8) is provided in the. A free end portion of a lid plug (9) swingably attached to the emergency discharge gate (8) is connected to a free end portion of a tow rope (10) made of, for example, a stainless steel wire rope. . The tow line
The base end of (10) penetrates through the protective conduit (11) and
(2) It is connected to an opening / closing device (12) arranged on the top, for example a winch. Reference numeral (13) in the figure is a hand-wound crank handle used during a power failure.

The protective conduit (11) is a tube made of, for example, stainless steel or synthetic resin,
It is fixed to the slope of (4) via a plurality of fixing legs (14). As shown in FIGS. 3 and 4, a plurality of anti-friction members (15) are externally fitted to the tow line (10) penetrating the protective conduit (11). The anti-friction member (15) is for preventing frictional loss between the tow line (10) and the protective conduit (11) and is an annular body made of synthetic resin.

In the structure shown in FIG. 3, a plurality of anti-friction members (15) are arranged in a series of beads, and a fixing jig (16) is attached to the tow line (10) at both ends of the anti-friction member (15). Secure the anti-friction member
Movement of (15) is regulated. As a result, as shown in FIG. 3, in the bent portion of the protective conduit (11), the tow cord is pulled.
The movement of the anti-friction member (15) is restricted when the (10) moves back and forth.

FIG. 5 is a longitudinal sectional view showing a second embodiment of the anti-friction member (15). In this form example, the anti-friction member (1
In 5), the soft inner layer (15b) is integrally formed in the hard outer layer (15a) by molding. A plurality of slits (15c) are formed on the inner peripheral surface of the soft inner layer (15b) at regular intervals in the radial direction.

In the anti-friction member (15) shown in FIG. 5, when the pulling cord (10) is inserted through the inner hole, the soft inner layer (15b) is pulled.
Since it is in close contact with (10), there is no radial movement, and friction between the tow rope (10) and the anti-friction member (15) is prevented.

FIG. 6 shows an opening mark (17) formed on the tow line (10). When the tow cord (10) in the protective conduit (11) is pulled and the lid plug (9) is fully opened, the fully open mark (17a) goes out of the protective conduit (11). The full-open mark (17a) may be paint, for example, or may have the same shape as the anti-friction member (15). For example, the color can be red and luminescent.

When the lid plug (9) is fully closed, the fully open mark (17a) enters the protective conduit (11) and the fully closed mark (17b) approaches the inlet of the protective conduit (11). The fully closed mark (17b) may be paint, for example, or may be of the same shape as the anti-friction member (15).
For example, the color can be blue and luminescent.

Between the fully open mark (17a) and the fully closed mark (17b), for example, a middle mark (17c) is formed in about 10 sections. The degree of opening / closing of the lid plug (9) can be measured by the middle mark (17c). For example, color-code from the base end to yellow-blue-yellow-blue-yellow-red-yellow-red-yellow-red. You can touch it to find out.

Further, when the opening mark (17) is made of the solid material, when the lid plug (9) is fully opened, for example, the reference numeral (18) in FIG.
Install a touch switch or sensor at the position indicated by, and apply the solid opening mark (17) to the switch or sensor to automatically turn off the switchgear (12) to stop it. be able to.

FIG. 7 is a vertical sectional side view of the lid plug (9). The central portion of the upper surface of the lid plug (9) has a ridge-shaped cross section and is bulged. This is to reduce the resistance of water flow when the lid plug (9) is opened.

A wire guide (9h) is formed at the center of the upper surface of the lid plug (9) in the left-right direction in the figure, the bottom plate (9j) and the side plate (9k) having a substantially U-shaped cross section and a side arc shape. It is installed and accurately guides the forward and backward movement of the tow rope (10),
It is set so that the opening / closing angle of the lid plug (9) corresponding to the advance / retreat length of (10) is made constant.

As shown in FIG. 8, a plurality of curved ridges (9a) can be formed in the radial direction on the upper surface of the lid plug (9). As a result, the water flow in contact with the upper surface of the lid plug (9) is separated by the ridge (9a), so the opened lid plug
The resistance of running water on the upper surface of (9) is reduced.

A shaft portion (9b) is formed at a base end portion of the lid plug (9) and is fixed to a bearing portion (8b) formed at a frame edge (8a) of the discharge gate (8). It is attached by a shaft (9c) so that it can be freely opened and closed. A mounting portion (9d) is provided on the upper portion of the free end of the lid plug (9), and a fixing tool (9f) is swingably attached via a support shaft (9e). The tip of the tow line (10) is fixed to the fixture (9f).

In the above structure, when the opening / closing device (12) on the bank (2) is operated and the tow line (10) is towed, FIG.
In, the free end of the lid plug (9) rises in the direction of the arrow about the fixed shaft (9c) and opens. In this case, the resistance of the water flow applied to the upper surface of the lid plug (9) is mitigated by the water flowing to the surroundings because the upper surface of the lid plug (9) is shaped like a mountain. When the tow cord (10) is loosened, the lid plug (9) is naturally closed by the water flow and the own weight of the lid plug (9).

FIG. 9 is a vertical sectional side view showing a second embodiment of the lid plug (9). The same members as those in the previous example are designated by the same reference numerals and the description thereof will be omitted. This embodiment is characterized in that a lever (9g) is attached to the free end of the lid plug (9). The lever
The base end portion of (9g) is short, and the base end surface is in contact with the upper surface of the frame edge (8a) with a rearward inclination, and the distal end portion of the lever (9g) is long and protrudes upward, The leading end of the tow line (10) is connected and fixed to the leading end via the fixture (9f).

In the above structure, when the tow rope (10) is towed by operating the opening / closing device (12),
Since the tip of the lever (9g) is pulled toward the opening / closing device (12) and rocks, the principle of the lever works, and the base end of the lever (9g) pressurizes the frame edge (8a). Since the support shaft (9e) is lifted, the free end of the lid plug (9) is easily lifted. That is, the lid plug (9) is under water pressure in the reservoir (1),
Due to the action of the lever (9g), the lid plug (9) can be easily opened with a small force.

The present invention is not limited to the above-mentioned embodiment, but the design can be changed appropriately. For example, the lid plug (9) is FRP (fiber reinforced plastic)
Can be formed with. In that case, the casting core is FRP
It is possible to coat with or to embed a heavy object in the FRP molded body. In addition, a plurality of mounting holes or mounting projections are formed in the frame edge (8a) to attach a dust net,
It is possible to prevent dust from being caught between the lid plug (9) and the frame edge (8a) of the gate.

[0030]

The present invention constructed as described above has the following excellent effects.

(1) In the invention described in claim 1, a lid plug is swingably arranged on an emergency discharge gate of a pond, and a tow cord connected to the lid plug is used as a winch. Since it is wound by a simple opening / closing device, the device structure is simple, failure is unlikely to occur, and the manufacturing cost can be reduced. Since the lid plug is opened and closed by the tow rope, even if the ground changes in the upper and lower portions of the dam body due to a ground break due to an earthquake, etc., the tow rope will not break and the lid plug can be easily opened. There is an effect that can be. Further, in the protective conduit, since a plurality of anti-friction members are externally fitted and attached to the tow cord, there is an effect that the tow cord does not rub against the protective conduit and wear. When the anti-friction member is a synthetic resin annular body, it is softer than the protective conduit in terms of material and is less likely to wear the protective conduit, and since it is annular, the friction area with the protective conduit is small and the sliding is good. There is an effect. When the opening mark indicating the position when the lid plug is fully opened and the position when the lid plug is fully closed is formed at the proximal end edge of the tow cord, there is an effect that the degree of opening and closing of the lid plug can be easily known.

(2) In the invention described in claim 2, since a plurality of the anti-friction members are arranged in a beaded shape and are fixed to the tow line by a fixing jig, the movement of the anti-friction members is restricted. It Therefore, there is an effect that the anti-friction member can be intermittently attached to a necessary portion without attaching the entire length of the tow line.

(3) In the invention described in claim 3, since the wire guide is formed at the lower part of the tow line at the center of the upper surface of the lid plug, it is possible to move the tow line back and forth. There is an effect that the tow cord can be accurately guided and the lid plug can be opened / closed in accordance with the length of advance / retreat of the tow cord.

(4) In the invention described in claim 4, since the lever is arranged at the free end of the swingable lid plug, and the tip of the tow line is connected to the lever, By pulling the cord, the lever acts to lift the free end of the lid plug, so that the lid plug under water pressure can be easily opened with a small force.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a water intake / discharge facility of a reservoir.

FIG. 2 is a plan view of a water intake / discharge facility of a reservoir.

FIG. 3 is a side view of an anti-friction member.

FIG. 4 is a front view of an anti-friction member.

FIG. 5 is a front view of an anti-friction member showing a second embodiment.

FIG. 6 is a side view of an opening mark.

FIG. 7 is a vertical sectional side view of a lid plug.

FIG. 8 is a plan view of the lid plug.

FIG. 9 is a vertical sectional side view of a lid plug showing a second embodiment.

[Explanation of symbols]

(1) Tameike (2) Levee (3) Floodway (4) Water transfer base (5) Main part (6) Discharge gate (7) Lid stopper (8) Emergency discharge gate (8a) Frame edge (8b) Bearing part (9) Lid stopper (9a) Ridge (9b) Shaft (9c) Fixed shaft (9d) Mounting part (9e) Support shaft (9f) Fixture (9g) Lever (9h) Wire guide (9j) Bottom plate (9k) side plate (10) Tow rope (11) Protective conduit (12) Switchgear (13) Crank handle (14) Fixed leg (15) Anti-friction member (15a) Hard outer layer (15b) Soft inner layer (15c) Slit (16) Fixing jig (17) Opening mark (17a) Full opening (17b) Fully closed seal (17c) Middle mark (18) Switch

Claims (4)

[Claims] 1. A water intake and discharge facility formed on an inclined surface of a bank of a pond, wherein an emergency discharge gate set below a water transfer base body is provided with a lid plug swingably. The base end portion of the tow line connected to the lid plug is connected to the opening / closing device on the dam body via the inside of the protective conduit arranged on the slope of the water guiding base, and the tow line is connected in the protective conduit. Is a water intake / discharge facility for a pond, characterized in that a plurality of anti-friction members are externally fitted and attached. 2. The rubbing member is made up of a plurality of beads in a beaded shape, and a fixing jig fixed to a tow line is arranged at both ends of the rubbing member to prevent movement of the rubbing member. The water intake of the reservoir according to claim 1, characterized in that it is regulated.
Discharge facility. 3. The lid plug has a substantially U-shaped cross section at the center of the upper surface.
2. A wire guide having a circular shape and a side arc shape is formed at a lower portion of the tow line, and formed.
Reservoir water intake and discharge facility described in any of the above. 4. A lid is swingably attached to a free end of the lid plug, and a tip of a tow cord is connected to a tip of the lever. The water intake / discharge facility for the reservoir described in any one of 3 to 3.