Salt rock is internationally recognized as an excellent medium for energy storage. However, most of the domestic salt mines are lacustrine laminated formations with mudstone interlayers, which have different creep characteristics to pure rocks. Therefore, in this paper, uniaxial compression tests were carried out on a interlayer Huai’an, Jiangsu, China, and multistage mechanical behavior was in...

One of the main concerns of an underground coal mining engineer is the safety and stability of the mine. One way that the safety and stability can be ensured is to know and understand the coal mine geology and how it reacts to the mining process. One technique that has shown a lot of success in the coal mining industry for geologic technical evaluation purposes is the coal mine roof rating (CMR...

Reclamation under the strict requirements of the federal Surface Mining Control and Reclamation Act of 1977 requires a high level of knowledge of plant growth r e q u i r e m e n t s in r e l a t i o n to geochemical factors on each mine site. A desirable reclamation goal would be to consider all feasible alternatives for creating productive soils and attractive landscapes. The raw materials fo...

This paper describes the effects of igneous intrusions on pore structure and adsorption capacity of the Permian coals in the Huaibei Coalfield, China. Twelve coal samples were obtained at different distances from a ~120 m extremely thick sill. Comparisons were made between unaltered and heat-affected coals using geochemical data, pore-fracture characteristics, and adsorption properties. Thermal...

Tests of space-time interaction detect clustering of events in space and time in excess of “any purely spatial or purely temporal clustering” (Kulldorff, 1998, pg. 58). These tests are widely employed in studies of crime (e.g. Knox, 2002; Grubesic and Mack, 2008) and disease (e.g. Petridou et al., 1996; Rogerson, 2001). By simultaneously considering both the spatial and temporal dimensions of t...

Mining activity always has high impact on its surroundings, being waste deposition the cause of multiple and complex problems to the environment. One of them is Acid Mine Drainage (AMD), causing acid water percolation through large areas in the mine site. Portugal was a prosper tungsten producer from the beginning of the XX century, having its apogee during World War II. Nowadays there are mill...

A numerical simulation is carried out to study the effect of the thin metal outer case of an antitank mine and the top air gap of an antipersonnel mine on the passive infrared imaging signature. In addition, an antipersonnel surface mine is also analyzed in the present investigation to show its effect on the soil thermal content. The effect of shortand long-wavelength radiation as well as the c...

This study is aimed at the preliminary investigation of microplastics as carrier heavy metals pollution in surface sediment. Heavy concentration was determined by FAAS while characterization analysed ATR-FTIR spectrophotometer. The results obtained showed high level lead (Pb) concentrations which ranged from 21.37 - 32.80 mg/kg across sampling sites Cd has least between 0.04 0.80 mg/kg. Pb and ...