Results 231 to 240 of about 125,532 (350)

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Wildfire-Induced alterations in soil physical, chemical, and micromorphological properties in forest ecosystems of Yunnan, Southwestern China. [PDF]

Sci Rep
Duan Y, Liu Z.
europepmc   +1 more source

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Factor of safety prediction for high road embankments using mixed effects random forest and bee colony optimization. [PDF]

Sci Rep
Boufarh R, Boursas F, Bakri M, Djabri A.
europepmc   +1 more source

Persistent toxicity of selected granular insecticides against rice brown planthopper, Nilaparvata lugens (Stal) in different soils

, 1992
N. V. Krishnaiah, M. B. Kalode
openalex   +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

Hydro-mechanical coupling and microstructural evolution mechanism of expansive soil under full suction range. [PDF]

Sci Rep
Wang D, Li M, Wang Z.
europepmc   +1 more source

Studies on the Control of Aphids Infesting Seed Crop of Radish with Soil Granular Systemic Insecticides [PDF]

, 1983
Sant S. Sekhon, O. S. Bindra, B. S. Chahal   +2 more
openalex  

Stiffness and Strength of Granular Soils Improved by Biological Treatment Bacteria Microbial Cements

, 2018
Mehdi Jalili, Mohmad Reza Ghasemi, Ali Reza Pifloush   +2 more
openalex   +2 more sources

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