Results 21 to 30 of about 686,858 (318)

Principles of risk‑based rock engineering design

open access: yes, 2020
In comparison with other types of construction, the development of rock engineering design codes has been slow. Codesmust, however, be developed with relevant discipline-specific characteristics in mind.
Palmstrøm, Arild   +7 more
core   +1 more source

Using Properties of Discrete Rocks to Optimize Backfiling

open access: yesГорные науки и технологии, 2019
Backfilling optimization is carried out through the use of discrete rock properties. A new line of the process improvement is based on the phenomenon of performance of residual rock strength when jamming in the process of underground mining of deposits ...
V. I. Golik   +3 more
doaj   +1 more source

Hydrocarbon source potential of the Upper Jurassic Naokelekan Formation, Northwestern Zagros Basin, Northern Iraq: An organic geochemical approach [PDF]

open access: yesKirkuk Journal of Science, 2017
This work depends on a detailed organic geochemical study of collected samples from the Upper Jurassic Naokelekan formation, from Ajil and Balad Oilfield.
Fawzi M. Al-Beyati   +3 more
doaj   +1 more source

Research into Dissociation Zones of Gas Hydrate Deposits with a Heterogeneous Structure in the Black Sea

open access: yesEnergies, 2021
Ukraine is an energy-dependent country, with less that 50% of its energy consumption fulfilled by its own resources. Natural gas is of paramount importance, especially for industry and society. Therefore, there is an urgent need to search for alternative
Oleg Bazaluk   +4 more
doaj   +1 more source

The Establishment of a Rock Creep Model by Using Creep Bodies via an Improved Gene Expression Programming Algorithm

open access: yesApplied Sciences
Rock creep commonly appears in rock mass engineering, and it should be paid appropriate attention. In this paper, studies on creep constitutive models of rocks were reviewed, and it was found that the types of creep constitutive models can generally be ...
Pingyang Fan   +6 more
doaj   +1 more source

Justification of the safe parameters of the dump with simultaneous dumping of overburden rocks and processing waste

open access: yesТехнічна інженерія, 2021
The article presents the results of scientific research to determine the possibility of joint placement of overburden rocks and processing waste of iron ore in one dump.
A.A. , I.K.
doaj   +1 more source

La contracultura beat: un puente entre la música negra y el rock

open access: yesComhumanitas, 2019
La milenaria cultura africana y las ilógicas formas sociales de la contracultura beat le confirieron un marco de autenticidad, identidad y rebeldía a la mayor expresión de música popular del siglo pasado: el rock.
Alfredo Stornaiolo-Pimentel
doaj   +1 more source

Modified true triaxial Hoek-Brown criterion considering intermediate principal stress effect

open access: yesMeitan kexue jishu
In order to improve the Hoek-Brown strength criterion not considering the influence of intermediate principal stress on rock strength, the evolutions of rock strength were investigated according to the results of the rock true triaxial compression test ...
Yapeng LI   +3 more
doaj   +1 more source

Experimental investigation of incipient shear failure in foliated rock [PDF]

open access: yes, 2015
It has long been known that rock fabric plays a key role in dictating rock strength and rheology throughout Earth's crust; however the processes and conditions under which rock fabric impacts brittle failure and frictional strength are still under ...
Niemeijer, André R.   +3 more
core   +1 more source

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