Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Hani S. Mitri"'
Publikováno v:
International Journal of Coal Science & Technology, Vol 10, Iss 1, Pp 1-18 (2023)
Abstract This study aims to investigate the beneficial effects of surface retaining elements (SREs) on the mechanical behaviors of bolted rock and roadway stability. 3D printing (3DP) technology is utilized to create rock analogue prismatic specimens
Externí odkaz:
https://doaj.org/article/57d16677492d4129ab4bfc03d580b79c
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 15, Iss 9, Pp 2238-2249 (2023)
Destress blasting (DB) implemented along the perimeter of safety pillars is a special application of destressing in coal longwall mining. The goal is to separate relatively more deformed mined areas from safety pillars, such as shaft pillars or cross
Externí odkaz:
https://doaj.org/article/52ee117900194953b85ef59f7bd07fab
Publikováno v:
International Journal of Mining Science and Technology, Vol 33, Iss 1, Pp 73-81 (2023)
This work is part of a multi-phase project which aims to develop a sound methodology for rock fragmentation in underground mines using expansive cement. More specifically, it is the first phase of the project which focuses on laboratory tests to inve
Externí odkaz:
https://doaj.org/article/6e055a99db31437d9d9eb7364827d7d8
Autor:
Yizhuo Li, Hani S. Mitri
Publikováno v:
International Journal of Coal Science & Technology, Vol 9, Iss 1, Pp 1-12 (2022)
Abstract Knowledge of ground stresses is crucial for ground control activities such as the design of underground openings, selection of support systems, and analysis for stability. However, it is a known fact that far field stresses experience change
Externí odkaz:
https://doaj.org/article/b681419646f3443595effeffcd559d1b
Autor:
Tuo Chen, Hani S. Mitri
Publikováno v:
International Journal of Mining Science and Technology, Vol 31, Iss 5, Pp 975-982 (2021)
Steeply dipping, vein and tabular orebodies are traditionally extracted with longitudinal retreat mining methods such as Eureka and Avoca in a bottom-up sequence with delayed backfill. To increase productivity, sill pillars in the orebody are used to
Externí odkaz:
https://doaj.org/article/a0aa81b3ea10438e91d3d2b7ef1d7f6e
Publikováno v:
Advances in Civil Engineering, Vol 2021 (2021)
In order to study the influence of burial depth or fire on the core area of cemented paste backfill (CPB), the experiment of CPB with different types of binder and temperature was carried out. Three types of binders, red mud (RM), Portland cement (PC
Externí odkaz:
https://doaj.org/article/8ff775da69454ba798e192187f4e1da9
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 10, Iss 1, Pp 60-71 (2018)
Haulage networks are vital to underground mining operations as they constitute the arteries through which blasted ore is transported to surface. In the sublevel stoping method and its variations, haulage drifts are excavated in advance near the ore b
Externí odkaz:
https://doaj.org/article/6d28f1da5ffe40d997891cabdc74adcb
Autor:
Atsushi Sainoki, Hani S. Mitri
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 10, Iss 1, Pp 1-10 (2018)
In the present study, methodologies to evaluate damage around an underground opening due to seismic waves arising from mining-induced fault-slip are examined. First, expressions for an associated flow rule with a failure criterion are developed for b
Externí odkaz:
https://doaj.org/article/e12f24b96df4405d8799af8c99df15a1
Publikováno v:
International Journal of Mining Science and Technology, Vol 27, Iss 6, Pp 937-944 (2017)
This paper aims to improve the accuracy and applicability of gas diffusion mathematical models from coal particles. Firstly, a new constitutive model for gas diffusion from coal particles with tri-disperse pore structure is constructed by considering
Externí odkaz:
https://doaj.org/article/273b028a6536485bb354cd60ee38387a
Autor:
Atsushi Sainoki, Hani S. Mitri
Publikováno v:
International Journal of Mining Science and Technology, Vol 27, Iss 4, Pp 591-597 (2017)
This paper focuses on the instability mechanism of an isolated pillar, caused by time-dependent skin degradation and strength heterogeneity. The time-dependent skin degradation is simulated with a non-linear rheological model capable of simulating te
Externí odkaz:
https://doaj.org/article/76f7f05657c74650a94142e7ab8da0ff