The quantitative determination of the geological strength index (GSI) and disturbance factor
(D) in the Hoek–Brown failure criterion is of great value because it can increase the …

Multi-stage hydraulic fracturing has been identified as a must to develop shale gas
reservoirs by increasing the stimulated reservoir volume (SRV). Supercritical CO 2 (scCO 2) …

Fracability evaluation for unconventional reservoir is critical to the selection of candidate
zones for post-frac productivity and plays a key role in fracturing design. Historically, the …

In underground coal mining, coal failure generally occurs due to the relatively weak strength
of the coal and the high applied mining-induced stresses. The outer complex geological …

Brittleness is an intrinsic mechanical property of rock materials that has attracted significant
attention to be properly quantified as it plays an important role in characterization of brittle …

Accurate evaluations of rock brittleness are very significant in the engineering geology and
geotechnical engineering fields. Most previous studies have adopted the stress–strain …

The hydraulic fracturing technology is widely applied in the fields of groundwater hydraulics,
hydrogeology, geo-environmental engineering and the oil and gas industry. Bio-cemented …

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 …

To investigate the porosity, permeability and rock mechanics of deep shale under
temperature-pressure coupling, we selected the core samples of deep shale from the Lower …

Accurate assessment of brittleness of rock material is of great significance in the fields of
underground mining engineering and unconventional oil and gas reservoirs. In this study …