JP2002155517A - Reservoir under river - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overflow preventing means. SOLUTION: This reservoir under a river for storing the water at the predetermined level or more is formed of plural reservoirs provided under the river and a pump system capable of transferring the water of a corresponding reservoir to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a technique for preventing flooding of various waterways and rivers.

[0002]

2. Description of the Related Art When heavy rain occurs due to a typhoon or the like, rainwater concentrates on waterways or rivers, which may lead to flooding or levee collapse.

[0003] Conventionally, in order to cope with such a situation, there are measures such as raising a dike, deepening a riverbed, and constructing a branch waterway. However, even though such means locally avoids flooding due to rising water levels, the increased water volume extends downstream as it is, causing flooding downstream.

In order to solve the above problem, as shown in FIG. 2, a water storage tank is provided below the river, and the water that has been raised to a certain level or higher is temporarily stored in a water storage tank below the river from an intake port provided in a river bank. Then, a technique of stabilizing the water level on the spot without flowing the increased water downstream has been proposed by gradually permeating or discharging the water.

[0005]

It is necessary to cope with flooding of rivers and waterways during heavy rainfall over a wide area including its basin. However, even if one river or waterway overflows, other floods may occur. Waterways often have room. In such a case, it is an object of the present invention to provide a means to cope with a case where a water tank provided under one river or a waterway cannot be completely treated and overflows.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a water storage tank provided under a plurality of rivers for storing water of a predetermined water level or higher, and a pump capable of mutually transferring water in the water storage tank. This is a lower river reservoir composed of a system. In other words, it has a network configuration in which water tanks provided under rivers are interconnected.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the present invention connects water tanks provided under a plurality of rivers or waterways to each other, and enables the exchange of water stored in the water tanks with each other.

[0008] The water storage tank is not limited to under the river, but may be provided on the side, that is, on the embankment or inside the embankment. The water storage tank is provided in the length direction of the river or the waterway, and can be set to an appropriate length and an appropriate number in consideration of the position of the bridge provided in the river. There is no inconvenience even if a water tank is installed in a place away from the river, and the water intake and the water tank should be connected by pipes, waterways, etc. so that the water of the river that has reached the predetermined water level can be poured by overflow. .

The water storage tank may be a water storage tank for storing water or a permeation tank for primary water storage. For the purpose of flood prevention only, it is recommended to use a permeation tank for primary storage. It is preferable to store the overflow of the river in order to prevent overflow, and to gradually release the water after the water level of the river decreases.

[0010] As shown in the figure, a water storage tank provided below each river is connected to an intake port provided on the bank or side wall of the river, so that water that has increased to a predetermined water level or more can be stored as overflow. ing. The water intake is preferably provided on the embankment or embankment, but it can also be provided in rivers or waterways if it does not hinder the traffic of ships. It is preferable to provide a screen at the entrance of the water intake for removing dust and ensuring safety.

The structure of the water storage tank may be a concrete or plastic molded body assembled and the periphery thereof wrapped in sheets. It only has to have the ability to store water and the strength to install under the river, and the existing type of water tank can be used.

[0012] The water storage tanks are connected by pipes. In particular, it is important to connect rivers with different water systems and water tanks installed in waterways. In rivers with different water systems, the amount of rainfall that falls in each basin differs, and there is a difference in the capacity and margin of the river. Be prepared to do it.

It is preferable that both a pump provided in each water storage tank and a valve provided in a piping system connecting the water storage tanks are configured to be remotely operated.

According to the present invention, since the water between the water tanks provided under the river and the waterway is connected so that they can be transferred to each other, even if one of the water tanks becomes full, the water storage capacity is large enough for other water storage. Since it can be transferred to the tank, flood and flood prevention effects are increased.

[Brief description of the drawings]

FIG. 1 shows a conceptual diagram of the present invention.

FIG. 2 shows a conceptual diagram of the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water storage tank 2 Intake port 3 Connecting piping 4 Remote control facility

Claims (1)

[Claims] 1. A water storage tank provided under a plurality of rivers for storing water of a predetermined water level or higher, and a pump system capable of mutually transferring water in the water storage tank. River bottom reservoir.