A cohesive soil primary dam structure for upstream tailings pond

Abstract

The invention discloses a cohesive soil primary dam structure used for an upstream tailings pond. Firstly, an anti-seepage layer at the bottom of the primary dam body is laid on the bottom of the primary dam body, and an upstream seepage drainage edge of the primary dam is respectively arranged on the upper and lower reaches of the primary dam. body (1), the seepage prism (1') downstream of the initial dam, and the initial dam seepage mattress (2) is laid on the anti-seepage layer at the bottom of the initial dam body, and the lower end of the vertical seepage blind ditch pipe (3) is connected to the The initial dam drainage mattress (2) is connected; the oblique drainage blind ditch is pre-buried at the contact position between the initial dam and the mountain, and the horizontal drainage blind ditch is pre-buried at the contact position between the initial dam and the mountain; the initial dam is piled up layer by layer from bottom to top , and layer-by-layer compaction, the anti-seepage slope protection layer (5) is constructed on the upstream slope of the initial dam. The oblique drainage blind ditch, the horizontal drainage blind ditch, the upstream seepage drainage prism of the initial dam, the downstream seepage drainage prism of the initial dam, the vertical seepage drainage blind ditch pipe and the initial dam seepage drainage mattress of the present invention jointly constitute a combined seepage drainage system, can effectively reduce the dam body infiltration line.

Description

technical field [0001] The invention relates to a tailings dam, in particular to a cohesive soil initial dam, which can be widely used in the construction of upstream tailings dams in the area where the tailings dam is located where stone resources are scarce, it is difficult to build a permeable rockfill dam and the transportation is inconvenient. , which can effectively reduce the wetting line of the dam body. Background technique [0002] The tailings pond is a special industrial building and one of the three major control projects of the mine. It is mainly composed of an initial dam, a tailings accumulation dam, a drainage system, and a monitoring system. The key to ensure the safe operation of the accumulation dam is to lower the soaking line, drain the water out of the dam body as much as possible, and try to retain the tailings. [0003] According to whether the initial dam is permeable, tailings ponds can be divided into two types: permeable tailings ponds and imper...

AI Technical Summary

Problems solved by technology

[0009] 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 stone consumption, and good water permeability. For the cohesive soil initial dam structure of the upstream 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, the method of the present invention can be used effectively. reduce the cost, and make the initial earth dam meet the use requirements of the permeable dam

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