Results 61 to 70 of about 2,608,139 (189)
Log‐Periodic Power Law Singularities in Landslide Dynamics: Statistical Evidence From 52 Crises
Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.Abstract Landslide movements typically show a series of progressively shorter quiescent phases, punctuated by sudden bursts during an acceleration crisis. We propose that such intermittent rupture phenomena can be described by a log‐periodic power law singularity model. Amounting mathematically to a generalization of the power law exponent from real to
Qinghua Lei, Didier Sornette
wiley +1 more source
Invisible Labor and the “Ghost Particle”: Underground Physics at the Kolar Gold Fields**
Berichte zur Wissenschaftsgeschichte, Volume 48, Issue 1-2, Page 163-179, August 2025.Abstract When cosmic rays—high‐energy particles from outer space—encounter the Earth's atmosphere, they produce particles called neutrinos. To detect them, physicists go underground inside deep mines where the overlying rock can filter out the cosmic‐ray background radiation.
Nithyanand Rao
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A New Method to Assess the Possibility of Brittle Failure of Rock Induced by Deep Excavations
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 6, Page 1725-1746, 25 April 2025.ABSTRACT Spalling and rockburst are severe criticalities that can emerge while excavating deep tunnels in rock masses under heavy natural stress states. Here, rock brittle failure can induce massive releases of the energy stored during the excavation and dangerous projections of rock blocks into the opening.
Lorenzo Milan +2 more
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Rockburst Prediction Model Based on Entropy Weight Integrated with Grey Relational BP Neural Network
Advances in Civil Engineering, 2019 A rockburst prediction model of the entropy weight grey relational backpropagation (BP) neural network is developed. The model needs to select the evaluation factors according to the engineering practice and establish the sample library.
Yuchao Zheng +5 more
doaj +1 more source
Deep Underground Science and Engineering, Volume 4, Issue 1, Page 3-17, March 2025.Hybrid rock fragmentation prediction models were developed by the combination of four machine learning methods and a Bayesian optimizer. Also, the prediction capabilities of the prediction models were evaluated based on R2, the root mean square error, and the mean absolute error.
Junjie Zhao +4 more
wiley +1 more source
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.To address the substantial mining pressure from unstable rock formations, impact compression tests were performed on coal–rock combination specimens of varying strengths using a split Hopkinson pressure bar (SHPB). The dynamic mechanical properties, energy dissipation patterns, and failure modes of the specimens were systematically analyzed ...
Litong Dou +7 more
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Predicting Model of Rockburst Based on Nondeterministic Theory [PDF]
, 2017 Predicting is the basis of prevention and controlling of rockburst hazards. Duo to the characteristic of sudden, disruptive, and complex, the accurate prediction of rockbursts is difficult and an urgent problem need to be solved. Rockburst tendency is an important metric to quantify the risk and potential intensity of occurrences and grade the hazard ...
openaire +1 more source
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.The structural plane significantly changes the rock failure behavior. The connectivity of the structural plane generally varies for the rocks in different engineering practices or rock environments. In this manuscript, a series of direct shear tests on granite specimens are carried out using the true‐triaxial testing machine.
Xianzhe Liang +6 more
wiley +1 more source
Study on Deformation Characteristics of Surrounding Rock in Deep‐Buried Tunnels of Plateau Railroads
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.Regarding the deformation problem of surrounding rock in deep‐buried tunnels of high‐altitude railways, this article adopted a combination of numerical simulation and in situ monitoring analysis methods relying on a new plateau railroad tunnel. The deformation evolution law of tunnel surrounding rock under different burial depth conditions and its ...
Ziguang Zhang +7 more
wiley +1 more source
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.Rock lithology has a significant influence on rock failure. Different types of rocks generally exhibit various rock failure manners. Also, the microseismic (MS) generated during the failure process of different types of rocks will present different characteristics.
Kai Ye +5 more
wiley +1 more source