Construction method of novel initial dam suitable for upstream type tailing pond

Abstract

The invention discloses a construction method of a novel initial dam suitable for an upstream type tailing pond. The construction method comprises the following steps of laying an initial dam body bottom impermeable layer first, respectively arranging an initial dam upstream seepage drainage arris (1) and an initial dam downstream seepage drainage arris (1') on the upstream and downstream of an initial dam, and laying an initial dam seepage drainage mattress (2) on the initial dam body bottom impermeable layer, wherein the lower ends of vertical seepage drainage blind drain pipes (3) communicate with the initial dam seepage drainage mattress (2); pre-burying an inclined drainage blind drain in the contact position of the initial dam and a mountain, and pre-burying a transverse blind drain in the contact position of the initial dam and the mountain; and building the initial dam layer by layer from bottom to top, compacting layer by layer, and constructing an impermeable slope protection layer (5) on the upstream slope surface of the initial dam. The construction method has the advantages of low construction cost, small amount of stone usage and good permeable effect, and drainage facilities are designed in the initial earth dam, so that the earth dam meets the requirement of a permeable 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 novel primary dam of type tailings pond, the designed primary earth dam can meet the permeable requirements of the permeable dam, when the site stone is not enough to build the primary rockfill dam and the cost of transporting the stone is high, the method of the present invention can be used effectively Reduce costs and make the initial earth dam meet the use requirements of permeable dams

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