Results 131 to 140 of about 16,249 (265)

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Study on the stability of waste rock filling in goaf based on dynamic comprehensive analysis method. [PDF]

Heliyon
Wu G, Nie X, Zhao L, Li Z.
europepmc   +1 more source

Impact of declining oxygen conditions on metal(loid) release from partially oxidized waste rock. [PDF]

Environ Sci Pollut Res Int, 2019
Kaasalainen H, Lundberg P, Aiglsperger T, Alakangas L.   +3 more
europepmc   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Experimental Investigation of Compaction Deformation and Seepage Mechanism of Granular Waste Rock Backfill Materials for Mitigating Mining-Induced Water Hazards. [PDF]

ACS Omega
Li M, Zhao Y, Zhang J, Wang X, Ma D, Xing S, Xie L.   +6 more
europepmc   +1 more source

An experimental study of the influence of lithology on compaction behaviour of broken waste rock in coal mine backfill. [PDF]

R Soc Open Sci, 2019
Li M, Zhang J, Wu Z, Liu Y, Li A.
europepmc   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Mechanical evaluation and optimal mixing ratios in co-disposal of phosphate mining tailings and waste rock. [PDF]

Sci Rep
Gomes Silva G, Cerqueira Silva R.
europepmc   +1 more source

Uranium speciation in weathered granitic waste rock piles: an XAFS investigation. [PDF]

RSC Adv, 2019
Tayal A, Conradson SD, Kanzari A, Lahrouch F, Descostes M, Gerard M.   +5 more
europepmc   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source