Conventional hydraulic lifting dam and its characteristics

The hydraulic lifting dam adopts a hinged design, which is connected to the embedded parts of the dam surface through double fulcrums or multiple fulcrums. An oil cylinder with an opening and closing door is installed at the dam foundation on the opposite side of the door plate, which is used to open the gate for flood discharge or close the gate for water storage. In the normal water storage state When it is used, it can be supported by supporting rods or directly supported by oil cylinders. The center of gravity of the gate is low, the drop of the downstream foundation on the dam surface is small, and the gate plate is close to the river bed when opening and discharging, so the flood discharge capacity is extremely strong. Wide range of applications, such as irrigation, ship locks, fishing grounds, seawater tidal protection, urban river landscape engineering and small hydropower stations, etc. Compared with the ram and ordinary ram, the number of buttresses and hoists can be reduced. It has high safety and is currently a popular river building. After completion, the water storage is beautiful and the waterfall landscape effect is obvious.

The hydraulic lifting dam is used as a new type of flap gate, which adopts a double-triangular stable structure and a scientific and reasonable mechanical structure; it is assembled in an infinite width type, and there is no need to set gate piers between the plates, which is suitable for rivers of different widths. The bottom of the slab surface is hinged, and it is close to the river bed after being flattened. The flood discharge effect is good, and it is not affected by sedimentation and floating objects; factory-fabricated design, quality assurance, fast construction speed, single gate or full gate Running, any floating objects can quickly rush to the downstream at the designated position, scouring the silt, scouring the silt, zone control, fast water discharge, and does not affect flood control safety, especially suitable for mountainous and urban rivers with rainy and rapidly rising floods in the south. On the basis of overcoming the main defects of conventional movable dams, hydraulic lifting dams retain their own advantages:

(1) The barrage is strong and durable;

(2) It has the characteristics of being close to the river bed without blocking water;

(3) It has the characteristics of rapid water discharge and arbitrary height water retaining of the flap door dam;

(4) It has the characteristics of beautifying the landscape with steel dam gates.

In short, the hydraulic lifting dam overcomes the various shortcomings of the traditional movable dam, retains all the advantages of the four types of movable dams, has obvious advantages, and is a cost-effective movable dam type.

Why is the hydraulic lift dam getting more and more attention?

1. In fact, a very important reason is that the cost is relatively low. Compared with some dams with the same specifications, its surface can be moved, so the width of the upper part of the foundation is only required to be equal to the height of the active dam. Therefore, the overall project investment cost is relatively low.

2. The hydraulic Elevator dam has a high degree of automation. It adopts buoy switch control, operates the hydraulic system, and realizes unmanned management. According to the fluctuation of the flood, the movable dam surface can be automatically raised and lowered.

3. The structure of the hydraulic lifting dam is solid and reliable, and its service life is long. After the dam surface is raised, a stable supporting pier dam structure and fixed triangular supports are formed. It will not be damaged by freezing in winter in the north, and the service life is more than 50 years.

4. The shape of the dam is beautiful. The artificial waterfall dam can be designed in an arc shape, manually operated, and can be arbitrarily raised and lowered to display the movable dam, so that the artificial waterfall can produce a dynamic pattern. It can be used as a new tourist attraction, a world-class high-tech attraction, and must be attractive to tourists. .

5. The sealing and water-stopping effect is good, and the maintenance and management cost is low. The sealing and water sealing of the hydraulic lift dam has important innovations, not only can almost drip, but also can be used for ten years. The parts are durable and easy to replace at low cost.

6. The flood discharge capacity of the hydraulic lifting dam is very good. Its dam surface is about 20 cm higher than the foundation, so it feels different, but when the water volume is large, it will not affect flood control or shipping.

The construction of a dam usually takes a long time to ensure that the dam's water storage function and flood discharge function can be used normally when necessary. However, traditional dams still have disadvantages such as long construction period and complicated construction. In contrast, hydraulic lift dams are much better.