3+ day, 3+ hour ago   (488+ words) Seismic site response analysis plays a fundamental role in predicting earthquake ground motions at the ground surface by accounting for soil effects on wave propagation. Although advanced nonlinear methods can accurately simulate complex soil behaviour, their use in routine engineering…...

3+ day, 5+ hour ago   (172+ words) The team used the model to compare how a site like this would respond to the instant shut-in method versus the other shut-in methods. They found that the tapered shut-in method increased pressure and stress in the rock, while the…...

4+ day, 23+ hour ago   (127+ words) Credit: Journal of Remote Sensing This work was supported by the National Key Research and Development Program of China (2021YFC2202001), the Special Program of the National Natural Science Foundation of China (52441508), the Research on Accuracy Improvement and Application of ACDL Multi-Component…...

1+ week, 1+ day ago   (450+ words) To characterize the three-dimensional evolution of creep damage in deep roadway surrounding rock, this study establishes a COMSOL-based (Multiphysics 6.3) integrated analysis framework coupling creep damage, seismic velocity response and three-dimensional imaging. The framework adopts the Norton–Bailey creep constitutive model,…...

1+ week, 2+ day ago   (433+ words) Weak alluvial soils are difficult to delineate where penetration-test data are sparse and stiffness varies rapidly with depth. This study presents a novel goal-attainment-optimised machine learning framework that combines multichannel analysis of surface waves (MASW) with anchor-based standard penetration test…...

1+ week, 2+ day ago   (645+ words) To investigate the mechanical response and evolutionary mechanisms of shear-slip rockburst in fractured rock masses, intact, single-fracture, and double-fracture cubic specimens were fabricated using a self-developed synthetic material designed to reproduce pronounced elastic energy storage and rapid brittle failure. Shear-slip…...

1+ week, 5+ day ago   (402+ words) To reveal the bearing and instability mechanisms after filling proppants in the blasting pressure-relief fracture, four types of proppant-containing sandstone composite construction with interface inclinations of 0°, 4°, 8°, and 12° were prepared. A uniaxial compression test was conducted by combining Acoustic Emission (AE)…...

1+ week, 5+ day ago   (483+ words) Taiyi Wang, a geophysicist who studies the mechanics of earthquakes and volcanos, joined the Department of Earth and Planetary Sciences as an assistant professor on Aug. 1. Earthquake mechanics and volcanology are traditionally separate disciplines in the geosciences. Wang combines them…...

1+ week, 6+ day ago   (505+ words) This study addresses the challenge of the mechanical behavior of fractured rock masses in cold regions under freeze–thaw-fatigue coupling. Uniaxial step-incremental cyclic loading tests were conducted on double-cracked red sandstone subjected to different numbers of freeze–thaw cycles to…...

1+ week, 6+ day ago   (417+ words) Hydraulic structures in navigation–hydropower hubs exhibit complex deformation governed by coupled hydraulic, thermal, and long-term effects, making reliable deformation monitoring challenging. Conventional statistical models are prone to multicollinearity-induced overfitting and elevated false alarm rates, while existing temperature components inadequately…...