Results 1 to 10 of about 930,944 (297)

Research on direct shear behaviour and fracture patterns of 3D-printed complex jointed rock models

Rock and Soil Mechanics, 2020
Geometry and mechanical characteristics of joints are key factors affecting the shear behaviors and fracture patterns of jointed rock mass. Using 3D printing technique, experimental jointed rock specimens containing rough joints with varied joint ...
WANG Pei-tao, HUANG Zheng-jun, REN Fen-hua, ZHANG Liang, CAI Mei-feng   +4 more
doaj   +1 more source

Accurate Identification of Broken Rock Mass Structure and Its Application in Stability Analysis of Underground Caverns Surrounding Rock

Applied Sciences, 2023
In view of the broken rock mass in the surrounding rock of large underground caverns, the 3D distribution model of the joints is obtained through the on-site investigation of the joints and the digital imaging technology, and the image processing ...
Ning Sun, Chang Liu, Faming Zhang, Menglong Dong, Zinan Li   +4 more
doaj   +1 more source

Experimental study on the effects of complex discrete joints on the mechanical behavior of rock‐like material

Energy Science & Engineering
The strength and failure of rock masses are ambiguous due to their complex structure. Investigating the strength and failure of jointed rock mass remains a persistent concern in mining engineering.
Qingteng Tang, Xingkai Wang, Wenbing Xie, Zuan Liu   +3 more
doaj   +1 more source

Experimental and numerical studies on mechanical behavior of pre-stressed infilled rock joints subjected to horizontal vibration loading

Case Studies in Construction Materials
Underground jointed rock masses are usually subjected to a coupled effect of static pre-stress and vibration disturbance from rock-cutting in Tunnel Boring Machines (TBMs) tunneling.
Bailong Ma, Kai Zhang, Tao Jiang, Yuezhang Zhu   +3 more
doaj   +1 more source

A Numerical Simulation of Blasting Stress Wave Propagation in a Jointed Rock Mass under Initial Stresses

Applied Sciences, 2021
The initial stresses have a strong effect on the mechanical behavior of underground rock masses, and the initial stressed rock masses are usually under strong dynamic disturbances such as blasting and earthquakes.
Qian Dong, Xinping Li, Yongsheng Jia, Jinshan Sun   +3 more
doaj   +1 more source

Numerical experiments on scale effects of contact characteristics of rock joints

Yantu gongcheng xuebao
To investigate the scale effects of contact characteristics in rock joints, a series of numerical models for joint sets with different sizes are generated using the self-affine fractal enlargement method.
GONG Geng 1, LI Shenglian 2, ZHANG Guohua 1, 3, XIONG Feng 1, TANG Zhicheng 1
doaj   +1 more source

Establishment of constitutive relation of shear deformation for irregular joints in sandstone

Rock and Soil Mechanics, 2022
The shear deformation of rock joints is significant for the safety and stability of rock engineering. In order to study the constitutive relation of shear deformation in jointed rock mass under a normal stress, the direct shear tests under different ...
CHENG Tan, GUO Bao-hua, SUN Jie-hao, TIAN Shi-xuan, SUN Chong-xuan, CHEN Yan   +5 more
doaj   +1 more source

Study on Failure Mechanisms and Mechanical Properties of Rock Masses with Discontinuous Joints Based on 3D Printing Technology

Applied Sciences
Within natural rock masses, discontinuous joints are more prevalent than continuous joints. Discontinuous joints refer to non-persistent structural planes separated by intact rock bridges and can be quantified by the continuity coefficient KA.
Yanshuang Yang, Junjie Zeng, Zhen Cui, Jinghan Yin   +3 more
doaj   +1 more source

Investigation on Relationship between Failure Patterns and Shear Strength of Rock Joints [PDF]

长江科学院院报
[Objectives] The instability and failure of rock mass structures originate from the shear failure of rock joints. Therefore, understanding the shear behavior of rock joints is of great importance for understanding the mechanical properties of rock masses,
CHEN Hao-xiang, WANG Ming-yang, JIN Tian-wei, QI Cheng-zhi, YI Yue-tong
doaj   +1 more source

CHARACTERIZATION OF JOINTED ROCK MASSES FOR ROCK ANCHORS

Doboku Gakkai Ronbunshu, 1994
ロックアンカーの設計・施工における定量的な岩盤評価を目的に, 原位置引抜き実験を行った岩盤を対象にして詳細な調査・試験を実施し, 調査・試験手法による結果の相違, 調査・試験結果間相互の関係を考察した. その結果から, ロックアンカーを対象構造物とした場合の岩盤の力学特性推定法として, 表面波探査とボーリング孔内載荷試験とを組み合わせた方法を提案し, その具体的な手順, 精度および適用性を示した.
Seiji Ebisu, Ömer Aydan, Seiichi Komura, Toshikazu Kawamoto   +3 more
openaire   +2 more sources