Rock mechanical failure characteristics and energy evolution analysis of coal-rock combination with different dip angles

2022 ◽  
Vol 15 (1) ◽  
Author(s):  
Wenbing Shen ◽  
Weijian Yu ◽  
Bao Pan ◽  
Ke Li
Keyword(s):  
Mechanical Failure ◽  
Energy Evolution ◽  
Failure Characteristics ◽  
Evolution Analysis ◽  
Coal Rock

Mechanical Failure Characteristics of Ceramic Multilayer Capacitors

1986 ◽  
Vol 69 (10) ◽  
pp. C-228-C-230 ◽  
Author(s):  
K. R. McKinney ◽  
R. W. Rice ◽  
C. Cm. Wu
Keyword(s):  
Mechanical Failure ◽  
Failure Characteristics ◽  
Multilayer Capacitors

Numerical Research on Energy Evolution and Burst Behavior of Unloading Coal–Rock Composite Structures

2018 ◽  
Vol 37 (1) ◽  
pp. 295-303 ◽  
Author(s):  
Yan-chun Yin ◽  
Yun-liang Tan ◽  
Yan-wei Lu ◽  
Yu-bao Zhang
Keyword(s):  
Composite Structures ◽  
Energy Evolution ◽  
Coal Rock ◽  
Numerical Research

scholarly journals Failure Mechanism of a Coal-Rock Combined Body with Inclinations of Structural Planes and a Calculation Model for Impact Energy

2019 ◽  
Vol 2019 ◽  
pp. 1-18
Author(s):  
Yi-Chao Zhao ◽  
Ming-Shi Gao ◽  
Yong-Liang He ◽  
Dong Xu
Keyword(s):  
Mechanical Properties ◽  
Failure Mechanism ◽  
Impact Energy ◽  
Coal Mines ◽  
Calculation Model ◽  
Engineering Practice ◽  
Test Results ◽  
Failure Characteristics ◽  
Coal Rock ◽  
Rock Strata

A coal-rock (CR) combined body can be used to simulate structures of coal and rock strata, and its impact-induced failure characteristic conforms more close to engineering practice. Exploring the mechanical properties and impact energy in a CR combined body contributes to better predictions of rock bursts in coal mines. In the study, the mechanical properties of CR combined bodies with four different inclinations (0°, 15°, 30°, and 45°) of structural planes were measured, and also their failure mechanism was analysed. Based on the theory of particle mechanics, a calculation model for impact energy in a CR combined body with inclinations was established and then verified by using monitored acoustic emission (AE) data. The test results showed that inclination affected mechanical properties and failure characteristics of the CR combined body, i.e., the larger the inclination, the lower the strength and impact energy in the CR combined body and the lower the level of damage. The proposed calculation model for impact energy revealed the mechanical essence of energy accumulation and release of a CR combined body, providing a reference for investigating rock burst in coal mines.

scholarly journals Experimental Study on Mechanical Properties, Failure Behavior and Energy Evolution of Different Coal-Rock Combined Specimens

2019 ◽  
Vol 9 (20) ◽  
pp. 4427 ◽  
Author(s):  
Shang Yang ◽  
Jun Wang ◽  
Jianguo Ning ◽  
Pengqi Qiu
Keyword(s):  
Kinetic Energy ◽  
Failure Modes ◽  
Rock Strength ◽  
Compressive Loading ◽  
Dissipated Energy ◽  
Failure Behavior ◽  
Peak Strain ◽  
Energy Evolution ◽  
Coal Rock ◽  
Axial Splitting

To investigate the effect of the pure coal/rock strength on the mechanical behavior, failure behavior, and energy evolution of coal-rock combined (CRC) specimens, an AG-X250 Shimadzu Precision Universal Test was used to conduct uniaxial compressive loading, uniaxial cyclic loading, and unloading compression experiments on pure coal, pure rock, and different CRC specimens. The results show that the uniaxial compressive strength, Young’s modulus, and peak strain of the CRC specimen mainly depend on the coal specimen instead of the rock strength. The major failure modes of CRC were the shearing fracture and axial splitting failure, and for the CRC specimen with the same hard rock, the CRC specimen severely failed due to axial splitting cracks. In addition, the released elastic energy Ue, dissipated energy Ud, and kinetic energy Ur increase with increasing rock mass/coal strength, and for CRC specimen with the same coal, the greater the difference in strength between the rock and coal is, the greater the kinetic energy is.

Energy evolution analysis and failure criteria for rock under different stress paths

2020 ◽  
Author(s):  
Liming Zhang ◽  
Yu Cong ◽  
Fanzhen Meng ◽  
Zaiquan Wang ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Failure Criteria ◽  
Energy Evolution ◽  
Evolution Analysis

scholarly journals Mechanical Failure Characteristics of Native and Modified Egg White Gels

1984 ◽  
Vol 63 (10) ◽  
pp. 1969-1974 ◽  
Author(s):  
J.G. MONTEJANO ◽  
D.D. HAMANN ◽  
H.R. BALL
Keyword(s):  
Egg White ◽  
Mechanical Failure ◽  
Failure Characteristics

scholarly journals Nation-Wide Mobile Network Energy Evolution Analysis

2013 ◽  
Author(s):  
Eva Perez ◽  
Philipp Frank ◽  
Gilbert Micallef ◽  
Benny Vejlgaard ◽  
Luis Maestro
Keyword(s):  
Mobile Network ◽  
Energy Evolution ◽  
Evolution Analysis

Numerical investigation on crack development and energy evolution of stressed coal-rock combination

2020 ◽  
Vol 133 ◽  
pp. 104417
Author(s):  
Heng Zhang ◽  
Cai-Ping Lu ◽  
Bin Liu ◽  
Yang Liu ◽  
Nong Zhang ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Crack Development ◽  
Energy Evolution ◽  
Coal Rock
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