A construction method for an initial dam suitable for an upstream tailings pond

Abstract

The invention discloses a method for constructing an initial dam suitable for an upstream tailings pond. Firstly, an anti-seepage layer at the bottom of an initial dam body is laid; The seepage prism (1') downstream of the dam, the initial dam seepage drainage mattress (2) is laid on the anti-seepage layer at the bottom of the initial dam body, the lower end of the vertical seepage drainage blind ditch pipe (3) and the initial dam seepage drainage mattress (2) Connectivity; pre-buried oblique drainage blind ditches at the contact parts of the initial dam and the mountain, and pre-embedded horizontal drainage blind ditches at the contact parts of the initial dam and the mountain; piled up the initial dams layer by layer from bottom to top, and compacted them layer by layer , construction of anti-seepage slope protection layer (5) on the upstream slope of the initial dam. The invention has the advantages of low construction cost, small amount of stone material used and good permeable effect, and the earth dam meets the requirements of a permeable dam by designing drainage facilities inside the initial earth dam.

Description

technical field [0001] The invention relates to a tailings discharge and stockpiling facility, in particular to an initial dam of a tailings pond, especially suitable for the upstream of the site where the tailings pond is to be built due to lack of stone resources, difficulty in building a permeable rockfill dam, and inconvenient transportation. The application in the construction of the type tailings pond can effectively reduce the infiltration line of the dam body. Background technique [0002] The initial dam is built with non-tailings materials, and its main function is to lay the foundation for the future tailings accumulation dam, also known as the foundation dam. There are two types of dams: impermeable dams and permeable dams. [0003] During the operation of the upstream tailings pond, considering the stability of seepage at the initial and later stages of the operation of the tailings pond, the initial dam type usually adopts a permeable rockfill dam. The permea...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of consuming a large amount of stone resources, high construction cost and poor water permeability of earth-rock dams in the construction of existing tailings pond permeable dams, and provide a low construction cost, small amount of stone usage, and good water permeability suitable for upstream The construction method of the initial dam of the type tailings pond, the designed initial earth dam can meet the water permeability requirements of the permeable dam, when the site stone is not enough to build the initial rockfill dam and the cost of transporting the stone is high, using the method of the present invention can effectively reduce cost, and make the initial earth dam meet the use requirements of a permeable dam

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