Results 21 to 30 of about 47,624 (295)
Integrated analysis of geofiltrational parameters in the context of underground coal gasification relying upon calculations and modeling [PDF]
, 2018 Objective of the paper is to substantiate and implement the integrated approach aimed at the studies of filtration and mass-transfer processes within roof rocks of coal seams in the context of their underground ...
Dereviahina, Nataliia +7 more
core +1 more source
Energies, 2023 Solutions for the maintenance of safety in an isolated working face has not been well achieved; this is attributed to its unique overburden structure and the strong mining-induced stress during the advancement.
Yingyuan Wen +5 more
doaj +1 more source
Frontiers in Earth Science, 2023 As coal resources are gradually being extracted at depth, the overlying strata movement behavior and stress environment become complex and violent, leading to the frequent triggering of strong dynamic hazards.
Junpeng Zou +3 more
doaj +1 more source
Topical problems concerning both methods and economy to develop mineral deposits [PDF]
, 2018 Purpose. Development of mining enterprises adaptation to changes in conjuncture of a product market relying upon its competitiveness while reducing expenditures connected with mineral stock extraction at the expense of mining operation schedule ...
Kasianenko, L +4 more
core +1 more source
STUDY OF OVERBURDEN TUFF ROCKS AND DEVELOPMENT ON ITS BASIS OF LIGHTWEIGHT STRUCTURAL CONCRETE [PDF]
Periódico Tchê Química, 2021 Introduction. The work presents the research results on the development of technology for lightweight structural concrete based on overburden tuff rocks. To develop the technology of lightweight structural concrete, overburden tuff rock (Almaty region of the Republic of Kazakhstan) is used, which is formed during the extraction of volcanic tuff for ...
Zhanar O. ZHUMADILOVA +2 more
openaire +1 more source
Flow-Induced Stresses and Displacements in Jointed Concrete Pipes Installed by Pipe Jacking Method [PDF]
, 2019 Transient flows result in unbalanced forces and high pressure in pipelines. Under these conditions, the combined effects of flow-induced forces along with sudden pipe displacements can create cracks in the pipeline, especially at the junctions.
Ahmad, Sajjad +3 more
core +2 more sources
Analysis of Overburden Structure and Pressure‐Relief Effect of Hard Roof Blasting and Cutting [PDF]
Advances in Civil Engineering, 2019 When studying the pressure‐relief effect of hard roof blasting and cutting, the roof‐cutting position and angle obviously affect the stability of the rock surrounding the gob‐side entry (GSE). In this paper, control of the large deformation of rock surrounding the GSE is evaluated on the basis of the overlying structure and pressure‐relief principle ...
Hao Liu +4 more
openaire +2 more sources
A 3D modeling method of bending zone in overburden strata
Gong-kuang zidonghua, 2018 For problem that tri-prism model cannot accurately represent irregular stratum structure especially borehole deviation, a 3D modeling method of bending zone in overburden strata based on generalized tri-prism model was proposed.
SHI Xiaonan, JIN Qifeng, SHEN Xia
doaj +1 more source
Ecological Indicators, 2023 This study analyzes the changes in soil microbial community diversity after five years of restoration in an alpine mining area using different soil overburden thicknesses, in which MiSeq high-throughput sequencing technology was applied to analyze soil ...
Liqun Jin +5 more
doaj +1 more source
Composition, Structure and Diversity of Vegetation on Asphalt Post-Mining Sites in Buton Island, Indonesia [PDF]
Floresta e Ambiente, 2023 Studies related to reclamation on asphalt post-mining land are lacking. This study aimed to analyze the diversity of vegetation on asphalt post-mining sites in Buton, Southeast Sulawesi Province, Indonesia. The study focused on the composition, structure
Albasri Albasri +7 more
doaj +1 more source