Ecological overtopping dam and construction method thereof

A water weir and ecological technology, applied in the field of ecological water weir and its construction, can solve the problems of low water passing capacity, poor anti-scourability, high operation and maintenance costs, etc.

Inactive Publication Date: 2011-11-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of weir has relatively low water passing capacity, p

Method used

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  • Ecological overtopping dam and construction method thereof
  • Ecological overtopping dam and construction method thereof
  • Ecological overtopping dam and construction method thereof

Examples

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Embodiment 1

[0021] The project area in this example is located in a river, and it is mainly used to adjust the water level, expand the water surface, improve the water purification function, and enhance the landscape effect of the water ecosystem. The ecological water weir is 80m long, with a trapezoidal cross section, 5.4m wide at the bottom and 1.2m wide at the top. The core wall is permeable, 0.5m below the ground and 0.7m above the ground. The upper part of the weir core wall is 0.2m wide, the lower part is 5.4m wide, and both sides are curved. The core wall foundation is buried underground to a depth of 0.5m, which meets the stability requirements of the ecological weir. The core wall foundation is constructed by drilling and grouting, and the concrete thickness of the core wall foundation is 0.2m. The core wall and its foundation are reinforced concrete structures, the concrete strength grade is C25, the impermeability grade is P6, and the frost resistance grade is F150. The core...

Embodiment 2

[0023] The project area in this example is located in the reservoir pond, which is mainly used to store the water body, increase the residence time of the water flow in the shoal area, purify the reservoir pond water body, and improve the water quality. The ecological water weir is 10m long, with a trapezoidal cross section, 4.4m wide at the bottom and 1.2m wide at the top. The core wall is impermeable, 0.4m below the ground and 0.7m above the ground. The upper part of the weir core wall is 0.2m wide, the lower part is 4.4m wide, and the two sides are broken lines. The foundation of the core wall is buried underground at a depth of 0.3m, which meets the stability requirements of the ecological weir. The concrete thickness of the foundation of the core wall is 0.15m. Before the foundation is filled, the topsoil on the bank slope must be removed, and the cleaned foundation surface soil layer must be compacted. The core wall and its foundation are reinforced concrete structures...

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Abstract

The invention provides an ecological overtopping dam and a construction method thereof. Specifically, an impermeable or permeable overtopping dam core is built by using reinforced concrete, and the foundation of the dam core is embedded in the ground, thereby meeting the stability requirements of the ecological overtopping dam; and stone ripraps are piled at the two sides of the overtopping dam core on the ground, and the stone ripraps are covered with a wire box or continuously wedged into timber piles along two sidelines of the bottom margin of the overtopping dam, thereby meeting the stability conditions of the stone ripraps. Through the construction of the ecological overtopping dam, the effect of falling-water aeration can be improved, and a living/perching space can be provided for aquatic creatures, thereby improving the self cleaning capacity of water. The ecological overtopping dam and construction method thereof provided by the invention are simple and quick, low in cost, convenient in operation and maintenance and wide in application range, embody the concepts of contemporary near-natural water resource engineering, and can be applied to the construction on overtopping dams for rivers, reservoirs and scenic water.

Description

Technical field: [0001] The invention relates to an ecological water weir and a construction method thereof. It belongs to the technical field of near-natural water resources engineering. Background technique: [0002] Traditionally, the use of water resources has mainly focused on resource functions such as agricultural irrigation, industrial and domestic water, power generation, and shipping. The value of water resources is only reflected in the value of resources that humans can use. In history, human beings have built various water conservancy projects. On the one hand, these projects have made great contributions to the development of social economy, but at the same time, they have also caused varying degrees of disturbance to water ecology and water environment systems. Because water conservancy projects have blocked the organic connection between organisms and the environment to varying degrees, and changed the habitat of natural water ecosystems, the diversity of bi...

Claims

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Application Information

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IPC IPC(8): E02B7/16E02D27/40
CPCY02A10/30
Inventor 张化永张木兰徐卫刚王中玉黄文佩
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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