Hebei KeWang Rubber Products Co., Ltd.: Hengshui, Hebei, China; Main products: Rubber Dam, sluice, Hydraulic elevator dam, Water conservancy engineering materials

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Home > Products > Dam > Bottom axis steel dam hydraulic engineering water interception dam steel dam river channel water interception

Bottom axis steel dam hydraulic engineering water interception dam steel dam river channel water interception

FOB Price

USD $500

2 - 4 Square Meter

USD $499

≥5 Square Meter

Port tianjin/qingdao
Payment TermsT/T L/C PayPal D/P Western Union Other
Delivery Detail15 days

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Product Details

Warranty	1 year	Transport Package	box
Specification	customizable	Trademark	KW
Origin	Hengshui,China

Product Description

1. Basics of Bottom Shaft Steel Dam

The bottom shaft steel dam, also known as the hydraulic steel dam or rotating steel dam in some cases, is a revolutionary water control structure in the field of water conservancy. Its academic name is bottom shaft driven flap gate. In 2008, a technical appraisal meeting for the “Research and Application of Large - Span Bottom Shaft Driven Flap Gate Technology” was jointly organized by the China Electrotechnical Society and the Chinese Society for Hydropower Engineering in Hangzhou. The appraisal committee recognized it as a new - type gate with multiple functions, such as two - way water retaining, flexible opening and closing, stepless adjustment of gate opening, convenient scheduling, and unobstructed flood control and navigation.

2. Components and Structure

2.1 Bottom Shaft

The bottom shaft is a crucial part of the bottom shaft steel dam. It is supported by hinge seats and is rigidly connected to the gate leaf through bolts. The gate leaf and the bottom shaft can rotate within a 90 - degree range around the center of the hinge seat, which is the key to realizing the opening and closing functions of the dam.

2.2 Steel Gate Panel

The steel gate panel serves as the main water - blocking component. Made of high - strength steel materials, it can withstand significant water pressure. The surface of the panel is often treated to enhance its corrosion resistance and durability.

2.3 Hydraulic Cylinder

Hydraulic cylinders are commonly used to drive the bottom shaft steel dam. Usually, single - section or multi - section plunger cylinders are employed. They are installed behind the gate and work based on the principle of three - hinge - point support. By pushing or pulling the gate, they can control the rotation of the gate leaf, thereby achieving the operation of opening and closing the dam.

2.4 Hinge Mechanism

The hinge mechanism plays a vital role in the connection and rotation of the bottom shaft and the gate leaf. It ensures smooth rotation of the gate leaf around the bottom shaft. The design of the hinge mechanism needs to consider factors such as load - bearing capacity and wear resistance to ensure long - term and stable operation of the dam.

2.5 Sealing Device for Steel Dam

To prevent water leakage, a reliable sealing device is installed around the gate leaf. This device can effectively seal the gaps between the gate leaf and the surrounding structures, ensuring that the dam can achieve good water - retaining performance when closed.

3. Operation and Function

3.1 Water Retaining Function

When the bottom shaft steel dam is in the closed state, the steel gate panel stands upright, blocking the water flow. The bottom shaft, supported by the hinge mechanism, and the well - sealed gate leaf work together to resist the pressure of water, effectively retaining water and raising the water level upstream.

3.2 Water Level Regulation

The dam allows for stepless adjustment of the gate opening. Through controlling the rotation angle of the gate leaf by the hydraulic cylinder, the amount of water flowing through can be precisely regulated, thus adjusting the water level upstream and downstream. This function is particularly important for meeting different water demand scenarios, such as ensuring sufficient water for irrigation or maintaining a suitable water level for ecological protection.

3.3 Flow Control

By adjusting the opening degree of the bottom shaft steel dam, the flow rate of water can be effectively controlled. In flood - prone seasons, the dam can be opened to a large extent to quickly discharge floodwaters, reducing the flood risk downstream. In normal times, it can be adjusted to maintain a stable flow rate to meet the needs of water use and ecological balance.

3.4 Opening and Closing Operation

The opening and closing operation of the bottom shaft steel dam is mainly achieved by the hydraulic cylinder. When it is necessary to open the dam, the hydraulic cylinder drives the bottom shaft to rotate, and the gate leaf gradually tilts until it lies flat, allowing water to flow through. When closing, the reverse operation is carried out. Additionally, in case of emergency, some dams are equipped with emergency devices, such as manual opening mechanisms, to ensure that the dam can be opened or closed in time even in the event of power outages or hydraulic system failures.

4. Applications in Water Conservancy Projects

4.1 Application in Rivers

In river management, bottom shaft steel dams are widely used. They can be installed at key sections of rivers to regulate water levels, control river flows, and prevent floods. For example, in the construction of the Xinggezhuang Gate in the Tongzhou section of the Chaobai River, a 9 - hole, 35 - meter - by - 5 - meter bottom - shaft - driven flap - type steel dam gate is being built. It can adjust the water level from 16 meters to 11 meters, which will make water resource allocation more efficient and meet the water needs of the ecological environment on both sides of the Beijing - Hebei border.

4.2 Use in Reservoir Construction

In reservoir projects, bottom shaft steel dams can be used as spillway gates or inlet and outlet control structures. They can control the water level in the reservoir, ensure the safety of the reservoir during flood seasons, and release water in a timely manner according to the needs of power generation, irrigation, and other purposes.

4.3 Application in Irrigation Projects

For irrigation systems, bottom shaft steel dams can be used to raise the water level of irrigation canals, ensuring sufficient water supply for farmland. They can also control the flow of irrigation water, making the irrigation process more scientific and efficient. For instance, in some large - scale irrigation projects, bottom shaft steel dams are installed at the diversion points of canals to regulate water flow and ensure that crops receive an appropriate amount of water.

4.4 Use for Flood Control

During flood seasons, bottom shaft steel dams play a crucial role in flood control. By quickly opening the dam gates, large - volume floodwaters can be discharged in a short time, reducing the flood pressure downstream. In areas prone to flash floods, the fast - opening function of these dams can effectively prevent flood disasters and protect the safety of people and property.

5. Advantages and Characteristics

5.1 High Strength and Durability

Made of high - strength steel materials, bottom shaft steel dams have excellent load - bearing capacity and can withstand strong water pressure and the impact of floating objects. The surface treatment of the steel materials also enhances their corrosion resistance, ensuring a long service life even in harsh water environments.

5.2 Low Maintenance Requirements

Compared with some other types of dams, bottom shaft steel dams have relatively low maintenance requirements. Their simple structure and reliable components reduce the frequency of breakdowns. Regular inspections mainly focus on checking the integrity of the steel structure, the performance of the hydraulic system, and the tightness of the sealing device. In general, with proper maintenance, they can operate stably for a long time.

5.3 Flexibility in Operation

The ability to adjust the gate opening steplessly gives bottom shaft steel dams great flexibility in operation. They can adapt to various water conditions and operational requirements, whether it is for precise water level control in urban water systems or for flood control and water resource regulation in large - scale water conservancy projects.

5.4 Good Scenic Effect

When the bottom shaft steel dam is partially opened and water flows over the gate leaf, it can form a beautiful artificial waterfall landscape, which is very suitable for use in urban river regulation projects where both water control and landscape construction are required. For example, in some urban river renovation projects, bottom shaft steel dams not only play a role in flood control and water resource management but also enhance the aesthetic value of the urban landscape.

6. Installation and Maintenance

6.1 Installation Process

The installation of a bottom shaft steel dam is a complex process that requires professional construction teams. First, the foundation of the dam needs to be carefully prepared to ensure its stability. Then, the bottom shaft, gate leaf, hydraulic cylinder, and other components are installed in sequence. The installation accuracy of each component is crucial, especially the connection between the bottom shaft and the gate leaf and the alignment of the hydraulic cylinder. After installation, comprehensive debugging and testing are carried out to ensure that the dam can operate normally.

6.2 Maintenance Requirements

Regular maintenance is essential to ensure the long - term and stable operation of the bottom shaft steel dam. This includes regular inspections of the steel structure for any signs of corrosion, deformation, or damage; checking the hydraulic system for leaks, proper oil levels, and normal operation of the pumps and valves; and inspecting the sealing device for tightness. Lubrication of moving parts should also be carried out regularly to reduce wear.

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Hebei KeWang Rubber Products Co., Ltd.: Contact nameLiu
Chat Now; AddressNo.3 West Longxing Street, Qinglan Town, Jing County, Hengshui, Hebei

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Bottom axis steel dam hydraulic engineering water interception dam steel dam river channel water interception

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