The investigation of layered rock mechanical properties is important for rock stability analysis. To examine the effects of layer inclination angle (LIA) and layer thickness (LT) on the compressive mechanical properties and damage mechanism of layered rock, this paper proposes a new method of preparing layered rock specimens using similar materials and conducting uniaxial compression tests. At the same time, PFC2D numerical analysis software is used to establish the discrete element numerical model of layered rock under uniaxial compression to deepen its microscopic damage mechanism. The results show that the LIA significantly affects the anisotropic mechanical properties of the rock, and the different LIA lead to significant differences in the crack extension paths and failure modes, which can be summarized into four types of cracks and four failure modes. The increase in LT under the effect of different LIA shows different mechanisms of action, which is enhanced in 0° and 90°, weakened in 45° and 75°, and insignificant in 15°, 30° and 60°. In addition, the expansion of micro-cracks in layered rocks are all dominated by interlayer shear cracks first, and then conduct to the rock portion to tensile cracks. The findings of this research offer valuable insights for stability assessment and design of layered rock structures in engineering applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11844890 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0318603 | PLOS |
Publication Analysis
Top Keywords
Similar Publications
Acoustic shock wave-induced formation of an undefined high-pressure carbon allotrope.
Dalton Trans
March 2025
Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Carbon is nothing less than a rock star in the world of research on allotropes which has a tremendous ability to form several simple and complex allotropic structures of various sp, sp and sp hybridizations, thanks to its flexible chemical structure. By high-pressure experimental and theoretical approaches, new carbon forms were synthesized from known carbon structures. Herein, we report the phase transition from amorphous carbon nanoparticles to a novel thermodynamically stable carbon allotropic structure, denominated as SD carbon (Sivakumar-Dai carbon), obtained through the impact of acoustic shock waves with a transient pressure of 16.
View Article and Find Full Text PDFFractal Dimension Analysis of Peripapillary Microvasculature in Primary Congenital Glaucoma.
J Glaucoma
March 2025
Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR.
Precis: In this prospective multicenter study, eyes with primary congenital glaucoma exhibited lower retinal vascular parameters compared to healthy controls, as assessed by optical coherence tomography angiography fractal dimension analysis.
Purpose: To study the retino-choroidal peripapillary microvascular pattern in primary congenital glaucoma (PCG) using fractal dimension (FD) analysis and compare it to healthy controls.
Methods: This was a prospective multicenter comparative study.
Study on migration instability characteristics and mine pressure control of roof overburden rock in thin coal seams mining.
Sci Rep
March 2025
Sichuan Furong Group Xuyong No.1 Coal Industry Co., Ltd, Luzhou, 646499, China.
In the Guxu mining area, the mining of thin coal seams is complicated by the unknown migration structure of the roof overburden and severe mine pressure. Based on this, taking the 1599 working face as the research background, and using a method that combines theory with simulation, starting from the structural fracture of roof overburden rock in thin coal seams, the roof failure characteristics during the mining process are studied, and the roof caving shape and stress distribution characteristics under the influence of mining speed are studied is explored. The research results show that a cantilever beam with a short length forms in the overburden rock of the soft bedrock roof during thin coal seams mining.
View Article and Find Full Text PDFThe effects of Shilajit on periodontal ligament cells in wound healing: a comprehensive in vitro study.
BMC Complement Med Ther
March 2025
Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, 600077, India.
Background: Shilajit is a pale-brown to blackish-brown fluid that varies in consistency and is released from rock layers in various mountain ranges across the world. For thousands of years, traditional medical systems in several nations have included shilajit in one form or another as a rejuvenator and adaptogen. Numerous medicinal qualities have been attributed to it, several of which have been confirmed by contemporary scientific analysis.
View Article and Find Full Text PDFA case study on thermal conductivity characteristics and prediction of rock and soil mass at a proposed ground source heat pump (GSHP) site.
Sci Rep
March 2025
College of Construction Engineering, Jilin University, Changchun, 130026, China.
Shallow geothermal energy (SGE) has a wide range of applications in the field of building cooling and heating. Ground source heat pump (GSHP) system is a technology to extract SGE. The design of borehole heat exchanger (BHE) has a great impact on heat transfer performance and investment cost, so it is important to accurately measure the thermal conductivity of rock and soil.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!