Clarifying the evaluation methods and factors influencing shale brittleness is of great
practical significance for fracture mechanism analysis, rock mass stability evaluation …

Brittleness is an important parameter controlling the mechanical behavior and failure
characteristics of rocks under loading and unloading conditions, such as fracability …

Evaluating the brittleness of rock is significant for strategy determination of hydraulic
fracturing, such as candidate selection and parameter optimization. A series of definitions …

Deep rock masses are in true triaxial stress (TTS) fields, and few studies have examined the
brittleness evaluation of rock under TTS thus far. In particular, research has not been …

Brittleness has an important effect on the deformation and failure behavior of rocks. In this
study, a brittleness evaluation index (Bp) based on the prepeak stress–strain curves of rock …

Brittleness is one of the important properties of rock, which is of great significance in rock
engineering. The evaluation of brittleness index is a useful way for the estimation of rock …

Rock brittleness is an important index evaluating geotechnical stability and failure mode,
and it is also influenced by pore fluid pressure, especially in deep underground mining. To …

Deep mining and drilling activities typically trigger significant deformation of coal/rock
roadway and even coal/rock dynamic hazards, which has attracted considerable attention …

To evaluate rock brittleness more accurately, a new rock brittleness index based on the peak
elastic strain energy consumption ratio (PEECR) was proposed in this study. Considering …

Brittleness is one of the most important mechanical properties of rock, especially in
designing an efficient fracturing method for deep production of raw petroleum and shale gas …