opencast mine
Recently Published Documents


TOTAL DOCUMENTS

131
(FIVE YEARS 37)

H-INDEX

12
(FIVE YEARS 2)

Author(s):  
Yuting Li ◽  
Wenxiang Zhou ◽  
Ming Jing ◽  
Shufei Wang ◽  
Yuhan Huang ◽  
...  

Soil construction and revegetation are essential for ecological restoration in mining areas. The influence of vegetation on the horizontal and vertical distribution patterns of soil properties should be fully understood. However, most studies on reconstructed soils in mining areas only concentrate on the surface soil, without exploring the vertical variations in soil properties. Overall, this study aims to explore the potential mechanisms by which surface vegetation exerts some influence on the spatial distribution of soil physicochemical properties, and to provide some insight into revegetation and soil reclamation in mining areas. Descriptive statistics and one-way analysis of variance (one-way ANOVA) were employed to evaluate the differences in the soil physicochemical properties in horizontal and vertical directions under different land-use types in the south dump of Antaibao opencast mine in Pingshuo, Shanxi Province, China. The main results of this study are as follows: (1) In the horizontal direction, except for the strong variation (variation coefficient ≥ 100%) in soil organic matter (SOM) content at some depths, the degree of variation in other soil physicochemical properties at various depths was moderate or weak (variation coefficient < 100%). The soil physicochemical properties gradually remained constant after years of reclamation. In the vertical direction, the soil bulk density (SBD), soil porosity, SOM content, soil C/N ratio, soil total nitrogen (STN) content, soil available phosphorus (SAP) content, and soil available potassium (SAK) content showed significant variations (p < 0.05) between soil depths. In contrast, no significant difference was found for other physicochemical properties. (2) The SBD, STN, SAK, soil porosity, and soil clay content were significantly different (p < 0.05) under different vegetation cover types, but the influence of vegetation on other soil physicochemical properties seemed to be limited. The results reveal that trees have a stronger ability to reduce soil grain sizes and enhance SAP contents than shrubs or herbs; however, the beneficial effects of herbs on the physicochemical properties of shallow soil are more obvious than those of trees and shrubs. (3) This study indicates that more shrubs and trees should be planted in the areas with low vegetation coverage, and more measures should be taken to improve soil physicochemical properties in order to prevent the occurrence of large-scale degradation. The reconstruction of soil structure should be preferentially considered in the process of soil reconstruction and revegetation in areas under similar conditions. Herbs should first be planted in the early reclamation stage. At the same time, shrubs or trees can be adopted in the middle and late stages of vegetation reconstruction in order to achieve comprehensive revegetation.


2022 ◽  
pp. 177-188
Author(s):  
Manoj Kumar ◽  
Praveen K. Singh ◽  
R. Nawaz

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Dagmara Nowak-Senderowska ◽  
Michał Patyk

The paper highlights the results of a study that examined the employees' expertise andawareness of occupational hazards in their work environment. The research involved a survey conductedin the form of a short questionnaire among employees responsible for loading and hauling of excavatedmaterial in an opencast mine. Among 23 major hazards that were thus identified, there were global hazards(affecting the entire mining process) as well as local, task-specific hazards. Depending on the number ofresponses, 10 local and 3 global hazards were identified in the analyzed area, involving noise, stress anddust. Active participation of the crew in the risk identification process helped in the assessment of theircriticality levels, according to employees carrying out various task, highlighting the benefits of suchapproach for effective work safety management in a mining company. The conducted researchdemonstrated yet another goal to be achieved - i.e. the comparison of criticality levels of hazards asidentified by employees and those reported in occupational risk assessment reports in the mine.


2021 ◽  
pp. 199-210
Author(s):  
Aditya Kumar Patra ◽  
Satya Prakash Sahu
Keyword(s):  

2021 ◽  
Author(s):  
Ivana Vejříková ◽  
Lukáš Vejřík ◽  
Martin Čech ◽  
Milan Říha ◽  
Jiří Peterka

Energy ◽  
2021 ◽  
pp. 120703
Author(s):  
Seema Ashishan Topno ◽  
Lalit Kumar Sahoo ◽  
B.S. Umre

Sign in / Sign up

Export Citation Format

Share Document