Results 51 to 60 of about 6,279 (248)
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 +4 more
wiley +1 more source
Research on the influence of gradation variation on the mechanical properties of rockfill material
Shuili Shuiyun Gongcheng XuebaoThe variation in particle gradation of the rockfill material used for dam construction significantly affects its mechanical properties, thus influencing the stability and safety of the rockfill dams.
WU Shiyong +5 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
Research on mechanical performance of crushed stones by large-scale triaxial shear tests
IOP Conference Series: Earth and Environmental Science, 2020 Abstract Crushed stones were used as furrowed subgrade in recent project. Triaxial shear tests were carried out on selected crushed stone with the gradation of 20 mm to 40 mm. The dry densities of specimens were controlled to be 1.450 g/cm3, 1.600 g/cm3 and 1.721 g/cm3, respectively.
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun +3 more
wiley +1 more source
Discrete element simulation of crushable rockfill materials
Water Science and Engineering, 2013 A discrete element method was used to study the evolution of particle crushing in a rockfill sample subjected to triaxial shear. A simple procedure was developed to generate clusters with arbitrary shapes, which resembled real rockfill particles.
Lei Shao +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
Accumulated Deformation of Gravel Filler of Subgrade under Cyclic Loading
工程科学与技术, 2018 Under cyclic loading of the train, the cumulative deformation of the subgrade will be produced, which causes the track irregularity and affects the comfort and safety of the train.
Yangbo LI +4 more
doaj
Scientific ReportsUsing coal gangue as subgrade filler (CGSF) can address the accumulated issues of coal mine waste, but also save the constructing costs, which has the important ecological and engineering practical value.
Zong-Tang Zhang, Guan-Ming Zhou
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