Results 41 to 50 of about 3,185 (188)

Probabilistic approach to provide scenarios of earthquake-induced slope failures (PARSIFAL) applied to the Alcoy Basin (South Spain) [PDF]

, 2018
The PARSIFAL (Probabilistic Approach to pRovide Scenarios of earthquake-Induced slope FAiLures) approach was applied in the basin of Alcoy (Alicante, South Spain), to provide a comprehensive scenario of earthquake-induced landslides.
Barton, Caccavale, Esposito, Gimènez, Hoek, Markland, Martino, Martino, Romeo, Romeo, Sabetta, Vera   +11 more
core   +4 more sources

Fractal analysis to determine JRC on sandstones and its correlation to SRF, Ende-Lianunu Regency, East Nusa Tenggara Province, Indonesia [PDF]

, 2023
The study area is located in Ende-Lianunu Regency, East Nusa Tenggara Province, Indonesia, with mountainous and hilly morphology, and is part of the Kiro Formation which is composed of tuffaceous sandstones.
Kurniawan, Kurniawan, Kusumayudha, Sari Bahagiarti, Saptono, Singgih, Vera, Tien Veny   +3 more
core   +2 more sources

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

FracRough—Computer program to calculate fracture roughness from reservoir rock core

Applied Computing and Geosciences, 2021
Measuring roughness of fractures in buried rock is challenging, but important in estimating fracture shear strength and permeability. Here, we present FracRough, a first-of-its-kind computer program that was developed to calculate the joint roughness ...
Mohamed M. Al-Fahmi, Sait I. Ozkaya, Joe A. Cartwright   +2 more
doaj   +1 more source

Background report on evaluation of thresholds for exemptions under Article 14(6) of the Energy Efficiency Directive [PDF]

, 2016
Article 14 (6) of the Energy Efficiency Directive allows Member States to exempt certain installations from the requirements of conducting a cost-benefit analysis of individual installations as stated by Article 14 (5).
CARLSSON JOHAN, KAVVADIAS KONSTANTINOS, SANTAMARIA BELDA MARTA   +2 more
core   +1 more source

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

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Derivation of a Barton standard JRC characterization formula considering sampling interval

河南理工大学学报. 自然科学版
ObjectivesTo achieve accurate characterization of the joint roughness coefficient （JRC）， this study employs the root mean square of the first derivative （Z₂）， a statistical roughness parameter， to quantify the two-dimensional joint profile roughness ...
Wang Gang, Chen Mingrui, Liu Tingfang, Wang Changsheng, Wu Xuezhen, Guan Hui, Chen Huiyuan, Guan Shangshang   +7 more
doaj   +1 more source

Computer Estimation of JRC Index Using Function Moments

Mendel, 2021
The paper deals with a shape of geological discontinuities. This shape significantly affects the stability of rock massifs. The joint roughness coefficient (JRC) is one of the main shape indicators but the methods of its estimation are based on the ...
Dalibor Martisek
doaj   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source