Results 61 to 70 of about 2,676 (167)
Case Studies in Thermal EngineeringThe near vertical coal seam adopts a segmented mining method to form a layered composite goaf, and its spontaneous combustion law is more complex. In order to understand the evolution law of temperature and oxygen after injecting low-temperature nitrogen
Gang Wang +3 more
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Energy Science &Engineering, Volume 14, Issue 1, Page 412-427, January 2026.Using the pillarless mining face at Zhaozhuang Coal Mine as a case study, the research objective is to accurately and comprehensively understand the stress distribution and its evolution characteristics in flexible concrete pillars along the hollow support pillars under the influence of secondary mining movements during pillarless coal mining ...
Yanhui Zhu +4 more
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Advances in Civil Engineering, 2020 The goaf left behind after mining has the potential to induce serious geological disasters due to the damaged internal structure of the rock. Estimating the boundary of the underground goaf can effectively control the occurrence of such disasters ...
Pu Bu +5 more
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Energy Science &Engineering, Volume 14, Issue 1, Page 444-459, January 2026.ABSTRACT This study addresses the challenges of deformation failure and the difficulty in controlling the surrounding rock in the 2453 floor roadway of a coal mine in Hunan Province, influenced by mining activities. Conducting an in‐depth investigation into the evolution law of the principal stress and stability control technologies for the surrounding
Shihai Shu +6 more
wiley +1 more source
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.• A novel low‐cost SQB was synthesized and optimized for CSTB. • The synergistic hydration mechanism of sulfate‐activated LS with alkali–sulfate‐activated GGBFS in SQB was revealed. • The SQB has effectively consolidated ST, which have significant potential for both environmental and economic benefits.
Faguang Yang +10 more
wiley +1 more source
Research on gas drainage drilling parameters and nitrogen injection for fire prevention in goaf
Gong-kuang zidonghua, 2020 Drilling and drainage can affect movement of air flow in goaf, thus leading to changes in goaf flow field, and increasing air leakage in goaf. At the same time, there is a state of negative pressure around the borehole, and the air leakage and air flow ...
CUI Chuanfa
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Advances in Civil Engineering, Volume 2026, Issue 1, 2026.Directional long horizontal drilling hydraulic fracturing technology (DLHDHF) can prevent and control the occurrence of rock burst disasters by controlling the hard roof in the near field. Therefore, it is exceedingly significant to enhance the pressure relief effect by determining the appropriate fracturing scheme. Taking Number 140202 working face of
Shang Du +8 more
wiley +1 more source
Stability Evaluation of the Goaf Based on Combination Weighting and Cloud Model
Advances in Civil EngineeringGoaf has become one of the most significant sources of hazard affecting the safety of metal and nonmetal mines. Evaluation of goaf stability is of paramount importance for mine safety production.
Linning Guo +3 more
doaj +1 more source
Frontiers in Earth ScienceSurface subsidence induced by coal mining is one of the most prominent anthropogenic geological hazards in mining areas. In terrestrial laser scanning (TLS) surveys of subsidence basins, point cloud data are often incomplete due to unavoidable surface ...
Zijian Wang +5 more
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Advances in Civil Engineering, Volume 2026, Issue 1, 2026.Mining‐induced coal seam extraction causes deformation and fracturing of the overburden, leading to the development of fractures, which pose significant threats to mine safety, surface structures, and natural ecosystems. To address the challenge of quantitatively characterizing overburden fractures caused by coal seam mining, this study, taking the 12 ...
Wei Zhu +9 more
wiley +1 more source