3 results match your criteria: "Information Institute of the Ministry of Emergency Management of the PRC[Affiliation]"
Article Synopsis
- The paper addresses the issue of varying safety levels in coal mines in China by analyzing the factors contributing to spatial and temporal differences using advanced statistical methods like GeoDetector and the Spatial Dubin Model (SDM).
- It identifies 15 key indicators impacting coal mine safety, with interactions among them having significant non-linear effects, particularly between the excavated environment and other factors.
- The findings reveal that industrial development is the strongest influence on safety levels, followed by capital allocation, while certain indicators like temperature and wind speed directly affect safety, with other economic factors causing positive spillover effects in neighboring areas.
This study examines the corrosion characteristics of weakly cemented sandstone under alkaline conditions, evaluating the effects of varying pH levels on its macroscopic degradation, micro-porosity, and mechanical properties, notably uniaxial compressive strength. Findings reveal that heightened alkalinity exacerbates rock damage, although a temporary alleviation in mass loss occurs between pH 9 and 11 due to pore clogging by complexes formed from cations like Ca2+ and Mg2+.Increased alkalinity induces marked changes in pore features, with an observed rise in pore numbers, transformation of pore shapes from elongated to more spherical, and adjustments in porosity, pore size, and roundness.
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