Mixed dam and construction method thereof

Abstract

The invention discloses a mixed dam and a construction method thereof and belongs to the technical field of hydraulic engineering. The mixed dam comprises a dam body and rock-fill pressure weights; the dam body comprises an upstream reinforced concrete dam main body, a downstream reinforced concrete dam main body, filling body dam main bodies, retaining walls and anchor cable connection sections; the multiple retaining walls which are arranged at intervals are arranged between the upstream reinforced concrete dam main body and the downstream reinforced concrete dam main body; and the two ends of each retaining wall are connected with the upstream reinforced concrete dam main body and the downstream reinforced concrete dam main body correspondingly. The filling body dam main bodies are arranged in spaces defined by the upstream reinforced concrete dam main body, the downstream reinforced concrete dam main body and every two adjacent retaining walls; the filling body dam main bodies are rock filling body dam main bodies or soil filling body dam main bodies; the anchor cable connection sections are buried in the retaining walls; and the two ends of each anchor cable connection section are connected with the upstream reinforced concrete dam main body and the downstream reinforced concrete dam main body correspondingly. The advantages of a rock-fill dam and a concrete dam are achieved, the disadvantages of the rock-fill dam and the concrete dam can also be overcome, the structure is simple, construction is convenient, and overhaul is facilitated.

Description

technical field [0001] The invention relates to the technical field of hydraulic engineering, in particular to a hybrid dam and a construction method thereof. Background technique [0002] At present, the dam types commonly used in hydraulic engineering include earth-rock dams (earth dams and rockfill dams) and concrete dams (concrete gravity dams and arch dams). [0003] Earth-rock dam is the oldest type of dam. Since earth-rock dams are generally built in remote areas, the advantages of earth-rock dams are that they can make full use of local natural materials, save steel, cement, etc., avoid long-distance transportation during dam construction, have strong adaptability to terrain and geological conditions, convenient construction, and earthquake resistance Good performance and easy maintenance. Earth-rockfill dams include: core wall rockfill dams and face rockfill dams. Core wall rockfill dams are prone to arching effects due to uneven settlement, and core wall cracks ...

AI Technical Summary

Problems solved by technology

[0004] Concrete dams are safe and reliable in quality and have good anti-seepage performance, but they have poor adaptability to terrain and geological conditions. Generally, they need to be built on complete bedrock and are sensitive to temperature. The demand for concrete is large, and it will cause material transportation in remote mountainous areas. Difficult, not easy to repair after damage

At the same time, the concrete gravity dam has a large section size and requires a large amount of concrete. Strict temperature control measures must be taken when pouring in-situ, and it is easy to cause cracks in the dam body and leakage due to temperature differences in a large amount of cast-in-place concrete.

The arch dam has higher requirements on the mechanical stability and deformation of the abutment, and has poor seismic capacity, is difficult to repair, and is highly dependent on terrain and geological conditions.

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