Reconstruction method of soil in surface layer of open-pit mining waste dump

Abstract

The invention relates to a reconstruction method of soil in a surface layer of an open-pit mining waste dump, and the method is as follows: when soil coverage of the surface layer of a platform at thetop of the open-pit mining waste dump is carried out, a soil covering vehicle carries out loose piling rather than grinding according to a certain arrangement way and ridges are set on the whole platform at the top of the waste dump by using a large-grid mesh and platform edges in the way of dense piling. The infiltration of the loose heaped soil of the surface layer and the accommodation of a concave region can not form a large amount of centralized runoff in heavy rain conditions, play the role of dispersing runoff and prevent convergence and heaping in seams of a large area of water flow.The loose heaped soil can absorb a large amount of rain water, store the rain water in the soil body and create the conditions for leading the platform of the waste dump to fast rehabilitate the vegetation; meanwhile, as the loose heaped soil can absorb and store the rain water, water can not flow downwards by the way of open flow, thereby avoiding the possible slope slide; in addition, the looseheaped soil further play the roles of automatically patching cracks due to settlement and soil sink holes of the surface layer.

Description

technical field [0001] The invention relates to the technical field of open-pit mining dumping methods, in particular to a method for reconstructing surface soil of an open-pit mining dump. Background technique [0002] Open-pit mining includes open-pit mining of coal, iron, copper, placer gold, oil shale and other metal and non-metallic mineral deposits. It refers to directly stripping the topsoil and rock strata overlying the mineral deposits to expose the mineral deposits before mining. Under suitable ore deposit and mining technology conditions, open-pit mining can achieve higher productivity and recovery rate at a lower cost than underground mining. With the development of large-scale special machinery, the open-pit mining industry has developed rapidly. For example, the current open-pit coal mining accounts for more than 30% of the world's total coal mining, and the proportion of other mineral deposits in open-pit mining is even higher. With the development of the eco...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reconstituting the surface soil of the open-pit mining dump to solve the problems of water and soil loss and the stability of the dump itself in the prior art of the open-pit mining dump

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