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

open access: yesScientific 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   +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

open access: yesJournal 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   +4 more
doaj   +3 more sources

Dynamic Disturbance Decoupling for Nonlinear Systems [PDF]

open access: yesSIAM Journal on Control and Optimization, 1992
Summary: In analogy with the dynamic input-output decoupling problem the dynamic disturbance decoupling problem for nonlinear systems is introduced. A local solution of this problem is obtained in the case that the system under consideration is invertible. The solution is given in algebraic as well as in geometric terms.
Henk Nijmeijer, H J C Huijberts
exaly   +5 more sources

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

open access: yesApplied 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   +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

open access: yesFrontiers 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 access: yesOpen 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   +4 more
doaj   +1 more source

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

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

open access: yesApplied 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   +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

open access: yesApplied 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   +7 more
doaj   +1 more source

Review of unstable falling of roof rock blocks under dynamic disturbance

open access: yes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   +5 more
doaj   +1 more source

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