Mining spoil heap rainfall infiltration experimental apparatus and method

Abstract

The invention relates to a mining spoil heap rainfall infiltration experimental apparatus and a method, and belongs to the field of environment geotechnical engineering. The mining spoil heap rainfall infiltration experimental apparatus comprises a control platform, an observing device, a rainfall device, a natural wind stimulator, and a stimulator. The mining spoil heap rainfall infiltration experimental apparatus is capable of stimulating, with consideration of influences of different wind speeds and wind directions, erosion effects, which are caused by different rainfall conditions on mining spoil heaps with different slop angles and different inner structure characteristics, and leaching characteristics which are caused by infiltrated rain in the inner parts of mining spoil heaps. It is beneficial for analysis of environmental geology disasters caused by mining spoil heaps under rainfall conditions. The mining spoil heap rainfall infiltration experimental apparatus is also capable of realizing verification and demonstration on implementation effects of mining spoil heap ecological restoration technology by changing materials in stimulated mining spoil heaps. In addition, in verification processes, parameter setting, data monitoring, recording and processing can all be completed via centralized control processing of the control platform, so that experimental effect is ensured, and experimental efficiency is improve greatly.

Description

technical field [0001] The invention belongs to the field of environmental geotechnical engineering, and in particular relates to an experimental device and method for rainfall infiltration of mining waste rock piles. Background technique [0002] In recent years, with the rapid development of my country's industrialization, the demand for mineral resources is increasing day by day. During the development and utilization of coal and metal minerals, a large amount of solid waste such as waste rocks, waste residues and tailings containing heavy metal elements and other toxic and harmful substances will be produced. After these solid wastes are transported to the surface along with the mining activities, the usual way of disposal is open-air centralized storage, forming a huge pile of mining waste rocks. Under the long-term leaching effect of natural precipitation, toxic and harmful substances in waste rocks will undergo geochemical effects such as dissolution, migration, and ...

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Problems solved by technology

[0004] At present, the commonly used soil column leaching test device can only simulate the leaching effect of waste rock caused by the infiltration of water in the medium in the vertical direction, and cannot simulate the erosion effect of different rainfall conditions on the slope; and the commonly used The slope rainfall erosion test system can only simulate the erosion characteristics of precipitation on the slope surface, and cannot simulate the leaching effect formed by the water infiltrated into the slope body

At present, the constitutive relationship of the slope erosion and slope leaching process caused by rainfall on the mining waste rock pile has not been really established, so it has not been possible to realize the slope flow generation of the mining waste rock pile under the rainfall. , Soil erosion, slope infiltration and solute migration process for effective simulation and behavior prediction

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