Strata behavior in extra-thick coal seam mining with upward slicing backfilling technology
International Journal of Mining Science and Technology, 2016 Abstract Based on the character of upward slicing backfilling mining and the condition of Gonggeyingzi coal mine in Inner Mongolia, this paper describes the studies of the strata behavior and the stress distribution in the process of backfilling mining in extra-thick coal seams.
Xuejie Deng, Xiaole Han
exaly +2 more sources
Meitan kexue jishuThe grassland areas in eastern Inner Mongolia and northern Xinjiang are rich in coal and groundwater resources. The mining fissures formed by high-intensity coal mining are easy to lead to the strong water-rich aquifer, and it is very easy to cause the ...
Weixuan CHENG +5 more
doaj +2 more sources
Water Formation and Inrush Risk of Overburden Strata for Extra-thick Coal Seam Mining
Meikuang Anquan, 2020 Based on the analysis of the hydrogeological data of the first mining area in Zhaoxian Coal Mine, by using the research methods of theoretical analysis, similar material test and numerical simulation, the separation layer of overburden strata and water ...
ZHANG Peisen, YAN Fenqian, SUN Yanan, WU Junda
doaj +2 more sources
Study on the linkage mechanism between key strata fracture in overburden and surface subsidence during caving mining in extra-thick coal seams [PDF]
Scientific ReportsCaving mining in extra-thick coal seams induces large-scale overburden movement, leading to more intense fracture processes in key strata, more significant surface subsidence, and frequent dynamic disasters in mines.
Tianwei Lan +5 more
doaj +2 more sources
Numerical Investigation on the Ground Response of a Gob‐Side Entry in an Extra‐Thick Coal Seam [PDF]
Shock and Vibration, 2021 This study was aimed at the large deformation phenomenon of rock mass surrounding the gob‐side entry driven in a 20 m extra‐thick coal seam. Taking tailgate 8211 as the engineering background, a numerical investigation was employed to analyze the deformation law of the gob‐side entry. The study results are as follows. (1) Because the immediate roof was
C.W. Zang +5 more
openaire +2 more sources
Energies, 2022 Gas disasters, such as coal and gas outburst and gas overflow, always occur during the mining of the steep and extra-thick coal seam in the horizontal, fully mechanized, top coal slice caving (HFMTCSC) method. To solve these issues and guarantee the safe
Hao Zhang +4 more
doaj +1 more source
Control of the Chamber in Extra‐Thick Coal Seam Based on Fracture Characteristics of Coal Rock and Mass [PDF]
Advances in Civil Engineering, 2020 As the development characteristics of cracks of the chamber are closely related to the bolt and cable anchoring parameters, the original rock stress of the surrounding rock, and fracture degree, this paper proposes the control method for chamber in extra‐thick coal seam by the crack development characteristics.
Yang Tai +4 more
openaire +2 more sources
Meitan kexue jishu, 2023 The mining of extremely thick coal seam form a large space stope, the fracture disturbance of hard roof spreads to a wide range, the working face weighting has the characteristic of “strong mine pressure”, it is obviously different from rock burst ...
YU Bin +3 more
doaj +1 more source
Surrounding rock support technology of extra thick coal seam roadway under the influence of mining
Meikuang Anquan, 2021 In view of the difficulty of surrounding rock support in the extra thick coal seam roadway affected by twice mining in Suancigou Coal Mine, the deformation and failure law of surrounding rock in the extra thick coal seam roadway under the influence of ...
LYU Kun
doaj +1 more source
Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement
Geophysical Monograph Series, Page 27-82., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm +2 more
wiley +2 more sources