High dam structure built on deep overburden of soil material shortage area

Abstract

The invention discloses a high dam structure built on a deep overburden of a soil material shortage area, and belongs to the technical field of design and construction of water conservancy and hydropower engineering buildings. The high dam structure provided by the invention has the advantages that the construction speed is high, the rare clay consumption is obviously lowered, and the construction cost is obviously reduced. The high dam structure comprises an excavation foundation pit, a clay core wall and a concrete diaphragm wall, and further comprises a foundation pit rockfill material back-filling layer, wherein the clay core wall is arranged in a dam body; the concrete diaphragm wall is arranged in the deep overburden; the foundation pit rockfill material back-filling layer is arranged in the excavation foundation pit; the clay core wall is arranged at the top of the foundation pit rockfill material back-filling layer; the concrete diaphragm wall penetrates through the foundation pit rockfill material back-filling layer in the vertical upward direction, and then is embedded into the clay core wall; and the bottom of the excavation foundation pit is reinforced by adopting a vibro-replacement stone column.

Description

technical field [0001] The invention relates to a high dam structure, in particular to a high dam structure built on a deep covering layer in an area where soil materials are scarce, and belongs to the technical field of water conservancy and hydropower engineering building design and construction. Background technique [0002] In recent years, as the country has stepped up efforts to develop hydropower in remote western areas, it has promoted the construction of a large number of high dams. These rivers located in alpine and valley areas often have deep cover layers. Constructing anti-seepage structures of high dams on deep overburden is one of the key technologies in engineering construction. [0003] At present, most of the anti-seepage structures of high dams built on the deep covering layer adopt the vertical anti-seepage structure connecting the soil core wall and the anti-seepage wall, and the connection parts between the soil core wall and the anti-seepage wall are ...

AI Technical Summary

Problems solved by technology

This type of anti-seepage structure is applied in engineering areas with rich soil material sources for core walls. Although it has good economic benefits, it will also cause environmental problems such as occupation of cultivated land and destruction of vegetation.

In areas where the core wall soil material source is scarce, it will also increase the difficulty of obtaining the core wall soil material, lengthen the transportation distance, and increase the investment.

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