Results 91 to 100 of about 6,231 (311)

Synergistic pathways: CO2 storage and subsurface resource utilization in China’s carbon-neutral goal

Journal of CO2 Utilization
Carbon capcture and storage (CCS), as a pivotal negative emission technology for achieving carbon neutrality, has evolved from a singular storage model to synergistic utilization patterns.
Keyao Lin, Yao Zhang, Muhammad Ali, Wendong Wang   +3 more
doaj   +1 more source

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

Energy Release Analysis of a Severe Rockburst in a Headrace Tunnel Crossing a Tectonic Stress Zone

Shock and Vibration, 2019
When tunneling in a hard and brittle rock mass within a tectonic stress zone, dynamic failure of rock mass-rockburst may occur. Considering the occurrence of rockburst is generally induced by a sudden release of storage elastic energy, a numerical ...
H. M. Tian, W. Z. Chen, C. S. Ma, D. S. Yang, X. J. Tan   +4 more
doaj   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

The Role of Material Structure in Compacted Earthen Building Materials: Implications for Design and Construction [PDF]

, 2011
Rammed earth is an earthen construction material and an ancient construction technique. It is formed by compacting layers of moist sandy loam subsoil into formwork which is then removed, exposing the material and creating a freestanding, monolithic ...
BECKETT, CHRISTOPHER,THOMAS,STONE, Beckett, Christopher Thomas Stone   +1 more
core  

Investigation of damage impact on stability and airtightness of lined rock caverns for compressed air energy storage

Deep Underground Science and Engineering
The lined rock cavern (LRC) compressed air energy storage (CAES) system is currently regarded as one of the most promising methods for large‐scale energy storage.
Hui Zhou, Shuo Zhao, Yang Gao, Muhammad Usman Azhar, Mingming Hu, Songhua Mei, Feng Xiao, Hongliang Tu   +7 more
doaj   +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

Experimental studies of scale effects on shear strength, and deformation of rock joints [PDF]

, 1980
The effect of scale on shear strength is studied by performing direct shear tests on different sized samples of large joints. A rubber moulding system is used to obtain impressions of the roughness from a variety of natural joint surfaces.
Bandis, Stavros
core  

Rainfall infiltration and stability analysis of an unsaturated slope in residual soil from flysch rock mass

, 2019
Weathering process in the flysch rock mass results with a geotechnical profile consisting of residual soil, weathered flysch rock mass and fresh flysch bedrock.
Peranić, Josip, Arbanas, Željko, Jagodnik, Vedran   +2 more
core   +1 more source

Investigation of parallel joint density thresholds for granite tunnel failure based on physical model experiments and multiscale monitoring techniques

Scientific Reports
Joint density significantly influences the failure modes of hard rock caverns, yet the underlying mechanisms remain poorly understood. This study systematically investigates the impact of parallel joint density on the failure behavior of hard rock ...
Huai-Sheng Xu, Shao-Jun Li, Ding-Ping Xu, Quan Jang, Liu Liu, Min-Zong Zheng, Xu-Feng Liu   +6 more
doaj   +1 more source