Results 1 to 10 of about 3,961,642 (152)

Experimental analysis of failure process in soft-hard combined rock masses at different inclination angles

open access: yesZhongguo dizhi zaihai yu fangzhi xuebao, 2023
In order to investigate the influence of the inclination angle of soft rocks on the evolution process of composite rock mass rupture, this paper conducted uniaxial compression experiments on composite rock masses with different inclination angles of soft
Na ZHAO   +4 more
doaj   +1 more source

Study on instability mode of double weak layer burnt rock slope

open access: yesMeikuang Anquan, 2022
In order to study the failure mode of double weak layer slope of burnt rock in opencast coal mine, the failure and deformation characteristics of the slope were analyzed by means of FLAC3D numerical simulation, and the mechanical model of the slope was ...
LI Wei
doaj   +1 more source

Multi-Rock Mass Classification Systems for the Assessment of Excavation Method and Support Design of Spillway Tunnel, Sidan Dam, Bali, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2023
This paper presents the implementation of rock mass classification systems to determine the excavation method and the support design of the Spillway Tunnel, Sidan Dam, Bali, Indonesia.
Arianto Benny   +2 more
doaj   +1 more source

Analyses on failure modes and effectiveness of the prevention measures of Jianchuandong dangerous rock mass in the Three Gorges Reservoir area

open access: yesZhongguo dizhi zaihai yu fangzhi xuebao, 2021
In this paper, the Jianchuandong dangerous rock mass in the Three Gorges Reservoir area is taken as an example to study the failure mode and protection of submerged thick-layer dangerous rock mass. Based on field investigation and the monitoring data, it
Wenming JIANG   +5 more
doaj   +1 more source

Study on Mechanical Problems of Complex Rock Mass by Composite Material Micromechanics Methods: A Literature Review

open access: yesFrontiers in Earth Science, 2022
The mechanical analysis of complex rock mass is a difficult problem, which often occurs in scientific research and practical engineering. Many achievements have been made in the study of rock mass composite problems by composite material micromechanics ...
Junzhao He   +8 more
doaj   +1 more source

An Experimental Investigation on Mechanical Properties and Failure Characteristics of Layered Rock Mass

open access: yesApplied Sciences, 2023
Layered rock mass is a common rock mass structure with diverse forms and complex mechanical properties. Three types of composite layered rock mass prepared using sandstone and shale can be divided into sandwiched type, interbedded type and superimposed ...
Yongxiang Zheng   +5 more
doaj   +1 more source

Rock mass blastability dependence on rock mass quality

open access: yesBulletin of the Geological Society of Greece, 2013
The present paper tries to investigate the influence of rock mass quality characteristics on blasting results. In order to come to some conclusions, blastability and quality of rock mass were put together using the already known classification systems. Taking into account the quantity of blastability index (BI) for every possible structural appearance ...
Chatziangelou, M., Christaras, Vasileios
openaire   +5 more sources

New-onset primary adrenal insufficiency in pregnancy associated with a unilateral adrenal infarction: a case report

open access: yesEndocrinology, Diabetes & Metabolism Case Reports, 2023
New-onset primary adrenal insufficiency is rare in pregnancy. The symptoms of adrenal insufficiency such as nausea, vomiting and dizziness may be attributed to the pregnancy itself, which can lead to a delay in the diagnosis. The presence of hypotension,
Lakshmi Menon   +4 more
doaj   +1 more source

Numerical Simulation of Triaxial Compression Experiment of Rock Mass Under Thermal-Fluid-Solid Coupling

open access: yesMeikuang Anquan, 2020
To explore the relationship between permeability characteristics of rock mass and stress field and temperature field, the mechanical behavior law of rock mass under coupling conditions is further obtained.
YANG Changde, WANG Peng, MAO Jinfeng, LI Jinbo, ZHANG Haidong
doaj   +1 more source

3-D discontinuum numerical modeling of subsidence incorporating ore extraction and backfilling operations in an underground iron mine in China

open access: yesInternational Journal of Mining Science and Technology, 2017
An underground iron mine in China has been used as a case-study to research the subsidence due to ore extraction and backfilling during open stoping operations.
Gang Huang   +4 more
doaj   +1 more source

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