Afforestation method in abandoned mine site

Abstract

The invention relates to an afforestation method in an abandoned mine site. The method comprises the following steps that a test tree species is cultivated, 70-90% by weight of waste slag is uniformlymixed with 10-30% by weight of tailing mud or sand-covered soil, then organic fertilizer or compound fertilizer is added, and then various tree species are planted; blocky gangue or stone is buried under the ground, and flatness of the abandoned coal mine terrain is kept; when the topographic slope of the abandoned mine site is greater than 15 degrees, drainage ditches are made every 20 meters inthe slope direction; from top to bottom in the slope direction of the slope, according to different tree species, the afforestation density is set, and planting holes are dug; the corresponding treespecies are planted into the planting holes which are covered with the waste slag, the compound fertilizer or the organic fertilizer is applied, and watering is conducted. Accordingly, not only can the survival rate of afforestation on gangue, coal residues, slag and other barren hillsides be increased, but also the method has the advantages of being low in soil base condition requirement, convenient for nursing management and the like.

Description

technical field [0001] The invention relates to a tree planting and afforestation method, in particular to a tree planting and afforestation method in an abandoned mine. Background technique [0002] my country is a country with severe desertification and a serious shortage of water resources. At the same time, it is also a country with rich mineral resources and active mining. Among them, a large number of abandoned mining areas and slag stacking areas formed during mineral excavation not only occupy limited land resources, but also cause pollution, soil erosion, mudslides and other environmental disasters due to random stacking, which has been criticized in modern society. [0003] In recent years, a series of studies have been carried out in the field of mining environmental protection around the treatment of slag and other wastes, including artificial landfill, mine reclamation, and planting trees and grass in mines. However, these studies treat the waste during mine de...

AI Technical Summary

Problems solved by technology

However, these studies treat the waste during mine development as a harmful substance, and lack the concept and technology of turning harm into profit and turning waste into wealth, which affects the effective utilization of slag and gravel, and cannot fundamentally solve the problem of waste. Passive Situation of Material Governance