Failure of rock mass in deep underground excavations could be attributed to a broad range
of performance malfunction, from plastic yielding of rock, generation of macro cracks on the …

Mining systems for ore deposit extraction with the backfilling of the goaf solve the problem of
preserving the surface and the complete extraction of rich ores. This paper considers the …

Micro-seismic (MS) technique can be used to appreciate rock failure process and severity of
damage by quantifying micro-earthquakes in terms of time, location, grade, and energy …

The assessment of the stope stability is of great importance in the underground mine design
process. The instability of stopes leads to serious economic and safety problems in mining …

铌, 钽矿产分布较广. 内生铌钽矿成矿类型主要为伟晶岩型, 稀有金属花岗岩型,
碳酸岩型和碱性岩型; 外生矿床多为内生矿床经过风化和沉积等外生作用发生二次富集的风化壳 …

Acoustic emission and hydraulic fracturing are the direct methods for measuring the in situ
stress of rock samples in the laboratory. The acoustic emission experiment (Kaiser effect …

Variations in rock mass properties are well-established in rock mechanics and underground
mining. The literature is replete with methods of assessing them and determining values that …

Deep mining has become the normal state of coal mining; compared with the mine with
shallow buried depth, the consequent high level of in situ stress and complex distribution …

The stress evolution and failure characteristics of overburden were studied during multi-
stope mining for a gently inclined thin orebody. Firstly, an indoor physical experiment was …

The deformation prediction of the chamber roof is crucial in underground mining. Combined
with Flac3D numerical simulation, the experimental design methodologies, including single …