Results 1 to 10 of about 111,068 (117)

Experimental and constitutive model study on the mechanical properties of a structural plane of a rock mass under dynamic disturbance [PDF]

Scientific Reports, 2022
An accurate description of the mechanical properties and deformation characteristics of a structural plane of a rock mass with a large chamber or slope under the ultimate stress with periodic stress disturbances is of great significance to ensure the ...
Yongjiang Yu, Yuntao Yang, Jingjing Liu, Pengbo Wang, Shipeng Zhang, Zhenmeng Wang, Shangqing Zhao   +6 more
doaj   +2 more sources

Rock damage and fracturing induced by high static stress and slightly dynamic disturbance with acoustic emission and digital image correlation techniques

Journal of Rock Mechanics and Geotechnical Engineering, 2021
A series of coupled static-dynamic loading tests is carried out in this study to understand the effect of slightly dynamic disturbance on the rocks under high static stress.
Shuting Miao, Peng-Zhi Pan, Petr Konicek, Peiyang Yu, Kunlun Liu   +4 more
doaj   +3 more sources

Dynamic Disturbance and Error Analysis of Flexible Support System for Large Optical Mirror Processing

Applied Sciences, 2021
To improve the accuracy of a flexible support system (FSS) used for optical mirror processing, the influence of air content in the working medium and ambient temperature change on the FSS is analyzed and studied.
Zujin Jin, Gang Cheng, Shichang Xu, Wei Gu   +3 more
doaj   +1 more source

Numerical Modeling on Blasting Stress Wave in Interbedding Rheological Rockmass for the Stability of the Main Shaft of Mine

Frontiers in Earth Science, 2022
High rheological property and strong mining disturbance are prominent conditions in deep rock projects, and often present a coupled process to induce rockbursts, collapse and land subsidence.
Shuai Li, Chao Zheng, Yong Zhao
doaj   +1 more source

The time-dependent deformation and damage constitutive model of rock based on dynamic disturbance tests

Open Geosciences, 2023
In the deep rock excavation process, the rock will produce deformation and damage under multiple dynamic disturbances, while there is also unrecoverable time-dependent deformation.
Chu Shaofeng, Chen Shihai, Liu Minlong, Huang Jiang, Wei Haixia   +4 more
doaj   +1 more source

Dynamic Disturbance Analysis of Whiskbroom Area Array Imaging of Aerospace Optical Camera

IEEE Access, 2021
The whiskbroom scanning imaging mode effectively expands the imaging field of the space optical camera, and realizes high-resolution and wide-width spatial imaging.
Shaoen Wang, Xiubin Yang, Rupeng Feng, Suining Gao, Jinliang Han   +4 more
doaj   +1 more source

Dynamic Disturbance Propagation Model of Pedestrian Panic Behaviors and Lyapunov-Based Crowd Stability Analysis

Applied Sciences, 2023
In public places, pedestrian panic behaviors have received increasing attention due to their dangerous impact on normal pedestrian flow. To address this issue, this study considered crowd panic behaviors as two-dimensional Gaussian disturbances ...
Cuiling Li, Rongyong Zhao, Chuanfeng Han, Rahman Arifur, Yunlong Ma, Qiong Liu   +5 more
doaj   +1 more source

Experimental Study on the Mechanical Properties and Acoustic Emission Characteristics of Deep Soft Rocks under Low-Frequency Dynamic Disturbance

Applied Sciences, 2023
The strong dynamic disturbance in deep mines seriously affects the safe and efficient mining of deep resources. In this study, we used the creep disturbance impact loading system and acoustic emission system to conduct experiments on soft siltstone ...
Ling Dong, Dong Wang, Xiaoming Sun, Yujing Jiang, Hengjie Luan, Guangchao Zhang, Guanglei Zhou, Bin Liang   +7 more
doaj   +1 more source

Review of unstable falling of roof rock blocks under dynamic disturbance

工程科学学报, 2023
Roof caving has been the main threat to the safety of underground mining, in which the caving of roof rock blocks is particularly concerning. The secondary structural planes of surrounding rocks around underground excavations, such as roadways and stopes,
Wancheng ZHU, Feng DAI, Min REN, Kai GUAN, Leilei NIU, Hangyu DONG   +5 more
doaj   +1 more source

Effect of Different Tunnel Distribution on Dynamic Behavior and Damage Characteristics of Non-Adjacent Tunnel Triggered by Blasting Disturbance

Mathematics, 2022
When a blasting is executed near two tunnels, the blasting wave will trigger a dynamic response and damage to the tunnels. Depending on the tunnel distribution, the path of the blasting wave to the remote non-adjacent tunnels will change. The aim of this
Jiadong Qiu, Fan Feng
doaj   +1 more source