Results 1 to 10 of about 913,172 (125)

Azarshahr travertine compression strength prediction based on point-load index (Is) data using multilayer perceptron [PDF]

open access: yesScientific Reports, 2023
Azarshahr County in the northwest of Iran is predominantly covered by Azarshahr travertine, a prevailing sedimentary rock. This geological composition has led to extensive open-pit mining activities, particularly in the western and southwestern parts of ...
Yimin Mao   +4 more
doaj   +2 more sources

Development of empirical equations between uniaxial compressive strength and point load index: a case study for sandy dolomite [PDF]

open access: yesScientific Reports
In this research, the Yuxi section of Central Yunnan Water Diversion Project in Southwest of China, including the tunnel and the traversed sandy dolomite along its route, was selected as the research area, and different sandification degrees ...
Meiqian Wang   +3 more
doaj   +2 more sources

Point Load Index of Rocks Exposed to High Thermal Effect [PDF]

open access: yesJournal of Engineering Research - Egypt, 2021
High thermal effects on Point Load Index (P.L.I) of rocks tolerate in mind an essential issue for numerous geotechnical engineering purposes. Many engineering relevancies interact with it as Geothermal power reserve extraction, Fires that occur in ...
Mohamed Labeeb   +3 more
doaj   +1 more source

Determination of the Uniaxial Compressive Strength of Rocks from the Strength Index

open access: yesGeoScience Engineering, 2022
The uniaxial compressive strength (UCS) is classified as one of the basic mechanical properties of rocks, which is widely used in mining and construction practice.
Jindřich ŠANCER   +2 more
doaj   +1 more source

Scale Effect and Correlation between Uniaxial Compressive Strength and Point Load Index for Limestone and Travertine

open access: yesApplied Sciences, 2021
Determining the uniaxial compressive strength of intact rock is the primary objective of a geomechanical project, and a reliable estimate in the early phases saves time and costs for more sophisticated laboratory tests.
Solange Contreras   +5 more
doaj   +1 more source

Distribution characteristics of the point load strength index of irregular ore rock samples in deep mines

open access: yes工程科学学报, 2023
The frequent occurrence of core disking in boreholes under high in-situ stress in deep rock engineering leads to the difficulty in intact core sampling on sites.
Di-yuan LI   +4 more
doaj   +1 more source

Correlation Study Between Point Load Test And Uniaxial Compressive Strength and Tensile Strength of Some Sedimentary Rocks In Mosul City [PDF]

open access: yesEngineering and Technology Journal, 2012
The point load test is used as a quick and inexpensive means of obtaining rock strength indexes when logging core samples in either a field or laboratory setting.
Thamer M. Nuri   +2 more
doaj   +1 more source

Determining the strength index of coal from the Brod - Gneotino deposit, Bitola [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2018
The Point Load Test (PLT) was performed in the geomechanical laboratory of the MMI Bor, in order to determine the strength index of coal samples from the Brod - Gneotino, Bitola, Republic of Macedonia. On the basis of the obtained results, it is possible
Tašić Dušan   +2 more
doaj   +1 more source

Non-Linear Instability of Pin-Ended Functionally Graded Material Arches Under Locally Distributed Radial Loads

open access: yesFrontiers in Materials, 2022
The arch is a common structural form in bridge engineering; its collapse is often caused by instability. In this article, in-plane nonlinear instability of pin-ended functionally graded material (FGM) arches with two cross-sectional types under local ...
Jinman Zhou   +5 more
doaj   +1 more source

A new method for evaluating the rock mass damage index based on the field point load strength [PDF]

open access: yesRoyal Society Open Science, 2019
The damage index is a crucial controlling parameter for rock mass strength and deformation in civil, geological and mining engineering projects. In this study, a new method was proposed for computing the damage index of a rock mass based on the field ...
Lei Wen   +5 more
doaj   +1 more source

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