JP3762397B2 - Water intake equipment - Google Patents

Description

  The present invention relates to water intake equipment provided in dams and reservoirs, and in particular, water intake from the surface is possible according to fluctuations in the water level of dams and reservoirs, and not only new dams and reservoirs but also existing dams. It relates to water intake equipment that can be easily added to water reservoirs.

  In general, the water temperature stratification in summer in dams and reservoirs is a surface water layer (about 2-5 m deep) heated by solar heat, and a water climatic layer (about 3-10 m deep) where the water temperature changes abruptly. ) And deep water layers with low water temperature. Therefore, when water for irrigation is taken, it is necessary to take water from the surface water layer with high water temperature and release it in order to ensure a suitable water temperature for growing crops. However, since the water level of dams and reservoirs is constantly changing, it is necessary to follow the water level of the stagnation outlet in order to stably take water from the surface water layer even if the water level changes.

  Conventionally, as a water intake facility that can cope with such fluctuations in the water level, for example, a porous, multi-tube, plate-shaped roller gate that takes water by forming multi-stage water intakes with different depths on a dam dam. A multi-stage cylinder gate that combines a multi-stage interleaving system and moves the gate up and down to select water according to the water level, and moves the cylinder and semi-circular cylinder up and down with a float or hoist to select and take water according to the water level. Etc. are used.

  Of these, the multi-stage intake system composed of circular cylinders is strong against water pressure and is suitable for intake facilities with high dams and large volumes of water. The linear multi-stage system using semicircular cylinders and plate roller gates is a circular cylinder. Since it is not as strong as water pressure, the circular cylinder type is used when the requirements for water pressure and water intake are less stringent, and the porous type and multi-tube type are used for equipment with even smaller water intake.

  However, some of the water intake facilities installed in old dams have a waterhole near the bottom of the lake and cannot take water from the surface water layer. However, the above-mentioned intake system is not so problematic when laying at the same time when a dam or reservoir is newly constructed, but when it is added to an old dam with a stagnation mouth only near the bottom of the lake, it involves a significant change in civil engineering. In some cases, it is necessary to temporarily stop the discharge, dry the construction site by temporary cut-off, and the like, and there are problems that the construction is difficult and the construction cost becomes very expensive.

  Therefore, in Patent Document 1, in order to automatically follow water level fluctuations and enable effective water intake, and to simplify the construction by minimizing the contact with the civil engineering structure, according to the water level. A semicircular float that moves up and down is installed, and a lift attached to the float raises and lowers the semicircular underwater float, and a water-impervious curtain with a weight attached to the underwater float. Water intake equipment that allows water to flow into the water shielding curtain only from the gap between the upper side of the water shielding curtain and the float, and can be easily added to existing dams. Is disclosed.

JP 2002-275865 A

  However, in the water intake equipment disclosed in Patent Document 1, a weight is attached to a water-impervious curtain made of rubber on an underwater float, and the rubber film is tensioned by the weight, but the rubber film is simply suspended. There is a problem that water stoppage is bad because it is only there, and there is a problem that water enters from the gap, and it is unstable because it is a floating facility. In addition, a heavy weight is necessary for tensioning the water shielding curtain, and a problem arises in durability of the rubber constituting the curtain by attaching and pulling the heavy weight.

  Therefore, in the present invention, it is possible to take water from the surface water layer according to fluctuations in the water level by using a float or a switching device, and it can be easily added to existing dams and reservoirs as well as new dams and reservoirs. It is an issue to provide a water intake facility that can reduce the construction cost at a low cost, minimizing the dryness of the construction site due to temporary suspension of discharge, temporary closing, etc. is there.

In order to solve the above problems, the water intake equipment of the present invention is:
A float that is provided at the upper part of the water intake provided in the levee body and that is configured to be movable up and down according to the water level or configured to be movable up and down to a height according to the water level, and a water shield that is suspended from the float or the switchgear. In the water intake equipment that composes the water intake,
A cylindrical body that can be expanded and contracted is supported by a structure provided on the inner wall of the water shield, and a center core supported by the levee body is provided at the center of the cylindrical body, and the structure is placed along the center core. The water shield is configured to be extendable ,
The water shielding film constituting the water shielding body is made of rubber, synthetic resin, or cloth, and a weight is disposed so that the water shielding film is stretched at the lowermost end of each of the water shielding bodies .

  Moreover, the said water-impervious body of this invention is distribute | arranged by the predetermined spacing with the suspending tool provided in the said float or switchgear, The water intake equipment characterized by the above-mentioned is obtained.

  Further, according to the present invention, the inner core has a guide rail, and the structure provided on the wall of the impermeable body can extend along the guide rail so that the impermeable body can be expanded and contracted. Water intake equipment is obtained.

  And according to this invention, the said water-impervious body is comprised by the nested shape in which the diameter of the said cylindrical body becomes small, and the lower cylindrical body is obtained, The water intake equipment characterized by the above-mentioned is obtained.

  Moreover, it is preferable that the said water shield is circular or polygonal.

  The water intake equipment according to the present invention is a tubular body that can be expanded and contracted by supporting the water shielding body on the structure provided on the inner wall, so that it is strong against pressure and can be moved up and down to a height corresponding to the float or water level. It is suspended by the constructed switchgear and a central core supported by a levee body is provided at the center, along with the structure, and the water shield can be expanded and contracted, so it can be configured very inexpensively, and the float is at the water level. When it moves up and down accordingly, the water shielding body expands and contracts to prevent water from entering from the surroundings reliably, and achieves water-stopping equivalent to the conventional technology. In addition, the core can be brought to the site and simply fixed to the dam body, and underwater construction is possible.As in the past, when the construction is suspended, the discharge is temporarily stopped, the construction site is dried by temporary cut-off, etc. Can be kept to a minimum, and construction costs are very low.

  In addition, by arranging the water shielding body at a predetermined interval with a hanging tool provided in the float or switchgear, it becomes possible to shield the upper part of the intake port provided in the dam body by its own weight, such as a door stop Therefore, it is possible to provide an inexpensive water intake facility.

  A guide rail is provided at the center, and the structure provided on the wall of the impermeable body extends along the guide rail so that the impermeable body can be expanded and contracted. It can be equipment.

  And the diameter of the cylindrical body constituting the water shielding body is configured to be nested so that the lower cylindrical body becomes smaller, so that when the cylindrical body is lowered due to the lowering of the water level, the cylindrical body having a small diameter From the top to the top of the water intake, the water is surely shielded.

  Moreover, the said water shield can be made into the thing excellent in intensity | strength by comprising in circular or polygonal shape. Furthermore, it is possible to make a highly durable water intake facility by using a metal water shield film for the water shield, and it is possible to make an inexpensive water intake facility by using a rubber, synthetic resin, or cloth water shield film. . In addition, when rubber, synthetic resin, or cloth is used as the water-impervious film, a water intake facility can be provided that can reliably shut off the water by attaching a weight to the lower part of the water-impervious body. can do.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Not too much.

  FIG. 1 is a plan view of an embodiment of a water intake facility according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a view when the water intake facility according to the present invention is most contracted. A side view and FIG. 4 are the figures for demonstrating the structure which expands / contracts the water impervious body which comprises the water intake equipment which becomes this invention.

  In the figure, 1 is a dam, 2 is an existing concrete slag opening provided in the dam 1, 3 is an existing discharge pipe, 10 is a water intake facility according to the present invention, and 11 is a circular or polygonal cylindrical body. A water impervious body constituting the water intake facility of the present invention, 12 is a float, 13 is supported on the operation base 14 provided on the dam 1, and the lower side is supported by the squeeze port 2 to support the entire water intake facility 10 and the water shield 11 A center core composed of a cylinder, a prism or the like that moves the float up and down along with the upper and lower sides of the float, 15 is an opening / closing device that suspends the float 12 by a wire 16 and moves the float 12 and the water shield 11 up and down as needed, and 17 is a water shield 11 is a structure that is provided on the inner wall of 11 and supports the upper portion of the water shielding body 11. When the water shielding film of the water shielding body 11 is made of rubber, synthetic resin, or cloth, the water shielding film is tightly stretched. Weight, indicated by broken line 19 is a hanging tool for the water shield 11 constituted by a chain or the like. The hanging tool is not limited to a chain, and a wire or the like may be used. It is suspended from the float 12. 20 is a stopper that prevents the structure 17 of the lowermost water shield 11 from being lowered below, and 30 is a support frame that constitutes the structure 17 in the water shield 11. It may be a polygon, a circle or the like. 31 is provided with a roller 33 that runs on a guide rail 32 provided on the core 13 and is fixed to the support frame 30. 34 is stretched around the support frame 30 constituting the structure 17 in the water shield 11. The water shielding film 30 may be made of metal, rubber, synthetic resin, cloth, or the like.

  As shown in FIG. 1, the water intake facility 10 of the present invention is supported by the operation base 14 provided on the dam 1 on the upper side and supported by the squeeze port 2 on the lower side, and is configured by a column, a prism, or the like. A float 12 configured to be movable up and down by a core 13 that supports the whole and a wire 16 that is lowered from an opening / closing device 15 installed on an operation stand 14, is suspended by a hanging tool 19 such as a chain and can be extended and contracted. It is comprised with the comprised several water-impervious body 11. FIG.

  Among these, as shown in FIG. 2 which is a cross-section of the AA portion in FIG. 1, the water shield 11 has an intermediate frame 31 disposed on the support frame 30 constituting the structure 17 provided on the inner wall of the water shield 11. A roller 33 is provided on the middle core 13 side of the middle frame 31 to run a guide rail 32 provided on the middle core 13. The support frame 30 is covered with a water-impervious film 34 made of metal, rubber, synthetic resin, cloth, or the like on its outer periphery.

And, as shown in FIG. 4, for example, when the water shielding film 34 is made of rubber, synthetic resin, or cloth as the water shielding film 34, the water shielding body 11 is formed at the lowermost end of the water shielding body 11. The weight 18 is arranged so that these water shielding films 34 are stretched . Its to the water shield 11 below the water shield 11 ₆ uppermost in FIG. 4 ₅ is such that the nesting is the diameter where the water shielding member 11 ₅ enters the inside of the water shield 11 ₆ . Each of the water shields 11 is suspended by a fishing tool 19 such as a chain provided on the float 12 at such an interval that the structure 17 provided on the inner wall is hidden by the lower end of the water shield 11 directly above. is, the water blocking member 11 ₅ to the lowermost end inside the Saegimizutai 11 _6, the water shield 11 ₄ at the lowermost end inside the water blocking member 11 _5, in nested so on, 11 ₁ to 11 ₆ shown in FIG. 1 A water shield up to is configured. It is obvious that the number of the water shields 11 is not limited to six.

The lowermost water shield body 11 ₁ of the structure 17, the stopper 20 provided on the central core 13, more, and stopped so as not to fall down, so this water blocking member 11 ₁ is always Figure 1 Upright at the indicated height.

On the other hand, the core 13 is composed of a cylinder, a prism or the like so as to support the entire water intake facility 10 as described above, and the upper side is supported by the operation base 14 provided in the dam 1 and the lower side is supported by the squeeze mouth 2. as shown in, the guide rail 32 is provided with rollers 33 disposed on the inner frame 31 of the structure 17 provided on the inner wall of Saegimizutai 11 travels further structure water shield body 11 ₁ as described above A stopper 20 is provided so that 17 does not fall below a certain height.

  The water intake system 10 according to the present invention configured as described above is erected so that the upper side of the core 13 is supported by the operation base 14 provided on the dam 1 and the lower side is supported by the squeeze port 2 as described above. Each of the plurality of water shields 11 is fitted into the guide rail 32 provided on the inner core 13 so that the roller 33 provided on the structure 17 enters. Further, as described with reference to FIG. 4, the respective water shields 11 are coupled with the suspension tool 19 such as a chain so that the lower water shield structure 17 is hidden at the lowermost end, and the float 12 Then, the float is put in the center core 13, and the float 12 is suspended by the wire 16 lowered from the opening / closing device 15 installed on the operation stand 14 so as to be vertically movable.

  In this state, for example, when the opening / closing device 15 installed on the operation base 14 provided on the upper part of the water intake facility 10 is operated and the float 12 is lowered by the wire 16 so as to float on the water surface, the float 12 and the water shield 11 The water in the surface water layer flows into the inside of the water shielding body 11 as a stagnation opening, and is sent out through the discharge pipe 3 from the stagnation opening 2 at the lower part of the lowermost water shielding body 11.

And when the water level of the dam has dropped in this state, down even float 12 to follow it water shield 11 ₂ 1 stages above the water shield body 11 ₁ of the lowermost edge so as to cover the water-impervious member 11 _1, Therefore, even if the water level of the dam fluctuates, the stagnation mouth constituted by the float 12 and the uppermost water shield 11 can always take water from the surface water layer.

Still the water level of the dam decreases, the water shield 11 ₂ in the same manner 1 water shield body 11 _third-stage top is lowered so as to cover the water shield 11 _2, one after the other water-impervious member 11 is below so on It goes down so as to cover the water shield 11 and finally stops as shown in FIG. 3 in which all the water shields 11 are lowered and overlap each other. The wire 16 of the opening / closing device 15 prevents the float 12 from being lowered further when all the water shields 11 are lowered and stopped in a state where they overlap each other.

  In the above description, the water intake facility is configured using the float 12 that is suspended up and down by the wire 16 that is lowered from the switchgear 15, but is simply lowered from the switchgear 15 without using the float 12. Alternatively, the wire 16 may be composed of a plurality of water shields 11 which are suspended by a hanging tool 19 such as a chain and configured to be vertically movable according to the water level. In this case, the construction can be made at a low cost as much as the float 12 is not used.

  As described above, according to the present invention, since the water shielding body 11 is supported by the structure 17 provided on the inner wall and formed into an expandable and contractible cylindrical body, the water shielding body 11 is suspended by the float 12 or the opening / closing device. In addition, since the central core 13 supported by the levee body 1 is provided at the center and the structure body 17 is provided, and the water shielding body 11 is configured to be extendable and contractible, it can be configured at a very low cost, and the float 12 can be configured according to the water level. When moved up and down, the water shielding body 11 expands and contracts to prevent water from entering from the surroundings reliably, and achieves water-stopping equivalent to the conventional technology. In addition, the core 13 can be brought to the site and simply fixed to the dam body 1, and can be applied underwater. As in the past, the construction site is made dry by temporarily stopping discharge, temporary closing, etc. , Etc. can be minimized, and the construction cost becomes very cheap.

  Further, the water shield 11 is arranged at a predetermined interval by the suspension 12 provided on the float 12 or the opening / closing device, so that the upper part of the water intake 2 provided in the dam body 1 can be shielded by its own weight. Since processing that requires accuracy such as hitting is not required, an inexpensive water intake facility can be provided.

  Further, the guide rail 32 is provided on the inner core 13, and the structure 17 provided on the inner wall of the water shielding body 11 extends and contracts the water shielding body 11 along the guide rail 32. Regardless, it can be a stable water intake facility.

  And the diameter of the cylindrical body which comprises the water-impervious body 11 is configured to be nested so that the lower cylindrical body is smaller, so that when the cylindrical body is lowered with the water level lowered, the cylindrical body with a small diameter is formed. It overlaps in order from the body to the upper part of the water intake, so that water shielding is surely performed.

  The water impervious body 11 can be made to be excellent in strength by constituting a circular shape or a polygonal shape. Further, by using a metal as the water shielding film 34 for the water shielding body 11, a highly durable water intake facility can be obtained, and by using rubber, synthetic resin, or cloth, an inexpensive water intake facility can be obtained. Further, when rubber, synthetic resin, or cloth is used as the water-impervious film 34, by providing the weight 18 below the water-impervious body 11, the water-impervious film 34 can be stretched tightly to ensure water shielding. Water intake equipment can be provided.

  According to the present invention, it is possible to take water from the surface water layer according to the fluctuation of the water level by using a float or a switching device, and it can be easily added not only to a new dam or reservoir but also to an existing dam or reservoir. It is possible to provide a water intake facility that can reduce the construction cost at a low cost, minimizing the construction site from being temporarily suspended during the construction, drying of the construction site due to temporary cut-off, and the like.

It is a surface measurement figure of one Example of the water intake equipment which becomes this invention. It is sectional drawing in the part described as AA in FIG. It is a side view when the water intake equipment which becomes this invention is shrunk most. It is a figure for demonstrating the structure which expands / contracts the water shield which comprises the water intake equipment which becomes this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Barrage 2 Existing well 3 Existing discharge pipe 10 Water intake equipment 11 Water shielding body 12 Float 13 Center 14 Operation stand 15 Opening and closing device 16 Wire 17 Impermeable body wall structure 18 Weight 19 Suspension tool 20 Stopper

Claims (4)

A float that is provided at the upper part of the water intake provided in the levee body and that is configured to be movable up and down according to the water level or configured to be movable up and down to a height according to the water level, and a water shield that is suspended from the float or the switchgear. In the water intake equipment that composes the water intake,
A cylindrical body that can be expanded and contracted is supported by a structure provided on the inner wall of the water shield, and a center core supported by the levee body is provided at the center of the cylindrical body, and the structure is placed along the center core. The water shield is configured to be extendable ,
Intake water characterized in that rubber, synthetic resin, or cloth is used for the water shielding film constituting the water shielding body, and a weight is arranged so that the water shielding film is stretched at the lowermost end of each water shielding body. Facility.   The water intake facility according to claim 1, wherein the water shield is arranged at a predetermined interval by a suspension provided in the float or the switchgear.   The said center core has a guide rail, The structure provided in the said water-impervious body wall can extend | stretch the said water-impervious body by enabling it to drive | work along the said guide rail. Water intake equipment.   The water intake facility according to claim 1, wherein the water shielding body is configured in a nested manner such that the diameter of the cylindrical body is smaller as the cylindrical body is lower.

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