Results 41 to 50 of about 1,870,275 (197)

Application of Geostatistical Modelling to Study the Exploration Adequacy of Uniaxial Compressive Strength of Intact Rock alongthe Behesht-Abad Tunnel Route [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2014
Uniaxial compressive strength (UCS) is one of the most significant factors on the stability of underground excavation projects. Most of the time, this factor can be obtained by exploratory boreholes evaluation.
Mohammad Doustmohammadi   +2 more
doaj  

Evaluating the Effects of Textural Properties on the Strength Parameters of Marbles from North-Western Khyber Pakhtunkhwa, Pakistan

open access: yesInternational Journal of Economic and Environment Geology, 2020
Marble is globally used as a natural stone for decorative and architectural purposes. Primary utilization of marble is as building and dimension stones.
Noor Muhammad, Umair Hassan, Zahid Ur Rehman, Sajjad Hussain, Muhammad Sajid, Atique Ahmad.
doaj   +1 more source

Models for evaluating craters morphology, relation of indentation hardness and uniaxial compressive strength via a flat-end indenter

open access: yesOpen Geosciences, 2018
In this work, the intensive theoretical study and laboratory tests are conducted to evaluate the craters morphology via the flat-ended indenter test, relationship of indentation hardness (HRI) and uniaxial compressive strength (UCS).
Zhang Ligang   +5 more
doaj   +1 more source

Prediction of cemented backfill strength by ultrasonic pulse velocity and BP neural network

open access: yes工程科学学报, 2016
Tailing-cemented backfill is a cement-based heterogeneous composite whose uniaxial compressive strength (UCS) and ultrasonic pulse velocity (UPV) are dependent on cement dosage, solid content, sample type, etc.
XU Miao-fei   +5 more
doaj   +1 more source

ANALISIS KORELASI ANTARA UNIAXIAL COMPRESSIVE STRENGTH DAN POINT LOAD INDEX PADA BATUGAMPING DI PANTAI NGRUMPUT YOGYAKARTA [PDF]

open access: yes, 2021
Kekuatan dari batuan utuh (intact rock) biasanya ditunjukkan melalui hasil uji kuat tekan uniaksial (Uniaxial Compressive Strength). Nilai UCS diperlukan untuk menilai karakterisasi massa batuan serta parameter masukan untuk desain geoteknik. Akan tetapi,
Rezky, Danu Mirza   +1 more
core   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

Petrography of Jutana Dolomite: Implications for Geotechnical Utility [PDF]

open access: yesInternational Journal of Economic and Environment Geology, 2018
Present study has been carried out to know the reliance of mechanical properties on the petrographic parameters. The Jutana dolomite is comprised of dolomite, sandy dolomite and siliciclastic beds.
Mustafa Yar   +3 more
doaj  

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Uniaxial compressive strength prediction and ratio parameter optimization of titanium tailings composite backfill materials using intelligent hybrid models

open access: yesDeep Underground Science and Engineering, EarlyView.
Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
wiley   +1 more source

Strength behaviour of a model rock intersected by non-persistent joint

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
Several constructions in the field of civil engineering quite often need to deal with rocks. Strength behaviour of rock intersected by a discontinuity or a set of discontinuities has been a topic of keen interest for engineering community.
Divya Shaunik, Mahendra Singh
doaj   +1 more source

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