Results 51 to 60 of about 1,050 (161)

A New Classification Method of Surrounding Rock Quality for Phyllite Tunnels Under the Condition of Layer Orientation Parallel to the Orientation of Tunnel Axis

Energy Science &Engineering, Volume 14, Issue 1, Page 47-60, January 2026.
Modified Mass Classification of Layered Rock Masses Based on the HC Method. ABSTRACT The HC method for hydropower is a commonly used rock mass quality classification technique in China's hydropower industry. Due to the anisotropic nature of the layered schist in the study area, and the varying angles between different tunnel layers and the tunnel axis,
Jing Yang, Jingyong Wang, Hao Luo, Ping Wang, Chengfeng Wu, Rui Zeng, Yupeng Lu, Hao Man, Feng Ji   +8 more
wiley   +1 more source

Dynamic Analyses of the Augustus Temple [PDF]

, 2011
Bu tez çalışmasında Augustus Tapınağının dinamik analizi gerçekleştirildi. Bu çalışmada FLAC3D, 3DEC ve SAP2000 yazılım paketleri kullanıldı. Sonuçlar tartışıldı ve karşılaştırıldı.In this thesis, the dynamic analyses of Augustus Temple was carried out ...
Okur, Yunus Emre, Sarı, Yasin Dursun
core   +1 more source

Benchmarking Contact Detection Algorithms Used in Polyhedral Particle System

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 1, Page 53-64, January 2026.
ABSTRACT A critical assessment of contact detection algorithms routinely used for simulating convex polyhedra in the Discrete Element Method is presented herein. Specifically, we focus on accuracy and computational efficiency and discuss the advantages and limitations of four different algorithms: the coupled Gilbert–Johnson–Keerthi – Expanding ...
Yuval Keissar, Michael Gardner, Nicholas Sitar   +2 more
wiley   +1 more source

Coal pillar deformation analysis under different inclinations and spaces of structural plane

Gong-kuang zidonghua, 2018
For problem that coal pillar is treated as a continuum in most of the coal pillar deformation studies without considering structural plane damage and instability in coal pillar, numerical simulation of the maximum principal stress and deformation of coal
NING Shan, LYU Jiakun, JI Haiyu, ZHANG Yandong   +3 more
doaj   +1 more source

Characteristics of Overlying Rock Movement and Spatial Structure Evolution During Fully Mechanized Top‐Coal Caving Mining in Thick Coal Seam

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
The variation in top‐coal thickness within thick coal seams leads to differences in the movement characteristics of the mining‐induced roof. This study focused on the fully mechanized caving face of the 4‐2 coal seam in Shendong Buertai Mine to explore the influence of top‐coal thickness variation on the overburden movement characteristics during the ...
Fa Dong, Shuai Wang, Gang Jing, Jingkai Li, Leilei Zhao, Shikha Binwal   +5 more
wiley   +1 more source

مقایسه مقاومت تک محوره مدل عددی و آزمایشگاهی توده‌سنگ درزه‌دار [PDF]

Analytical and Numerical Methods in Mining Engineering, 2014
ارزیابی مقاومت توده سنگ در انتخاب محل مناسب، طراحی و اجرای موفق پروژه­های معدنی و عمرانی از ملزومات اولیه است. مقاومت فشاری سنگ بکر می­تواند به کمک آزمون­های استاندارد آزمایشگاهی تعیین شود، درحالی‌که تعیین این پارامتر برای توده سنگ به‌شدت درزه‌دار خیلی ...
مصطفی اسدی زاده, رضا رحمان نژاد   +1 more
doaj  

Controlling Meter‐Scale Deformations in Small‐Clearance Tunnels Through Layered Slate Using High‐Tension NPR Anchor Cables: Case Study From Tayi Tunnel

Geofluids, Volume 2026, Issue 1, 2026.
An active control method using negative Poisson′s ratio (NPR) anchor cables is proposed to tackle problems like significant deformations of surrounding rock due to the mutual disturbance between closely spaced twin tunnels in layered slate. Rock mechanics tests indicated a U‐shaped variation in the peak strength of slate across joint dip angles from 0°
Chenlei Guo, Fengnian Wang, Chuanjiu Zhang, Qibin Lin   +3 more
wiley   +1 more source

Dynamic optimization of support parameters and risk prevention and control during tunneling with fractured surrounding rock: a case study of the Gande’er Mountain tunnel project

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
As rock tunnel construction gradually progresses into the complex engineering stages characterized by long, large, deep, and challenging projects, evaluating the quality of surrounding rock and ensuring excavation safety become formidable tasks due to ...
Gang Wang, Wenpeng Yuan, Feng Jiang, Yujing Jiang, Peng He   +4 more
doaj   +1 more source

Study on Determination of Working Resistance of Supports in Large Height and Fully Mechanized Caving Mining Face Under Thin Direct Roof

Meikuang Anquan, 2020
To propose the mechanical relationship between the support and the surrounding rock of the large-scale high-level fully mechanized top coal caving mining face, and to derive the calculation formula of the working resistance of the hydraulic support, the ...
GUO Yanke, YANG Yongkang, XU Suguo, FU Yunkai
doaj   +1 more source

A Study on the Floor Heave Characteristics of a Gob‐Side Entry in Deep‐Thick Coal Seam During Longwall Mining

Geofluids, Volume 2026, Issue 1, 2026.
Floor heave control becomes more and more prominent in engineering practice with the increased mining depth of the working face. The gob‐side entry of the 21404 working face in Hulusu Coal Mine was taken to be the engineering background to study the gob‐side entry’s floor heave in the working face with a deep, thick, and dense layer of coal.
Yinghao Hao, Jinhai Liu, Xiaodong Miu, Guoli Ding, Pei Qi, Hao Wu, Linsheng Gao, He Yongliang   +7 more
wiley   +1 more source