Journal ArticleDOI
Acoustic emission signals frequency-amplitude characteristics of sandstone after thermal treated under uniaxial compression
TLDR
In this paper, the frequency-amplitude characteristics of acoustic emission (AE) signals were analyzed after different high temperature treatment, and the main frequency distribution at different stress level was analyzed.About:
This article is published in Journal of Applied Geophysics.The article was published on 2017-01-01. It has received 63 citations till now. The article focuses on the topics: Acoustic emission.read more
Citations
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Effect of high temperature on physical and mechanical properties of Jalore granite
TL;DR: In this paper, an experiment was carried out to study the thermal effect (from 25°C to 600°C) on stress-strain behavior, elastic modulus, peak stress, thermal damage, and tensile strength of Jalore granite, India and compared with similar properties of granite from other countries.
Journal ArticleDOI
A review on the mechanism, risk evaluation, and prevention of coal spontaneous combustion in China
TL;DR: The CSC risk assessment was performed from the aspects of prediction, detection, and determination of the “dangerous area” in a coal mine, and a new geophysical method for CSC determination is proposed and analyzed.
Journal ArticleDOI
The effect of high temperature environment on rock properties-an example of electromagnetic radiation characterization.
Biao Kong,Enyuan Wang,Zenghua Li +2 more
TL;DR: The thermal stress was responsible for thermal deformation and fracture, thus generating the EMR signals, and the research results have important guiding significance for the application of EMR technology to the evaluation of rock thermal stability.
Journal ArticleDOI
Experimental Study of Nonlinear Flow Behaviors Through Fractured Rock Samples After High-Temperature Exposure
TL;DR: In this article, a series of water flow tests through both intact and fractured samples were conducted in a triaxial cell under different confining pressures (10-30 MPa) and varying inlet hydraulic pressures (0.4-6 MPa).
Journal ArticleDOI
Fractals and Chaos Characteristics of Acoustic Emission Energy about Gas-Bearing Coal during Loaded Failure
TL;DR: In this paper, the authors studied the damage evolution mechanism of gas-bearing coal and formation causes of acoustic emission signals during this process, and the loaded experiments of gasbearing coal were performed, and aco...
References
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Journal ArticleDOI
Rock burst process of limestone and its acoustic emission characteristics under true-triaxial unloading conditions
Manchao He,J.L. Miao,J.L. Feng +2 more
TL;DR: In this paper, a single-face dynamic unloading tests under true-triaxial condition were carried out for Paleozonic marine sedimentation limestone samples produced by blocks cored from 1140m depth in Jiahe coal mine of China.
Journal Article
Study on rock mechanics in deep mining engineering
TL;DR: In this article, a detailed study on the nonlinear mechanical characters of engineering rock mass in deep mining under complicated geology mechanical environments is presented, and it is pointed out that the mechanical system which is subordinated to engineering rockmass at depth, is the non-linear mechanical system, but not the linear mechanics system subordinated at shallow.
Journal ArticleDOI
Real-time frequency determination of acoustic emission for different fracture mechanisms in carbon/epoxy composites
TL;DR: In this article, a Dantec burst spectrum analyser was used to detect frequencies in a wide band around a certain central frequency for different failure modes such as matrix cracking, debonding, fiber pull-out and fiber failure.
Journal ArticleDOI
FLAC/PFC coupled numerical simulation of AE in large-scale underground excavations
TL;DR: In this article, a coupled numerical method is used to study acoustic emission (AE) and microseismic (MS) events at the Kannagawa underground powerhouse cavern in Japan, where two codes, Fast Lagrangian Analysis of Continua (FLAC) and Particle Flow Code (PFC), a distinct element code, are coupled.
Journal ArticleDOI
Thermal effect on the physical properties of carbonate rocks
H. Yavuz,S. Demirdag,S. Caran +2 more
TL;DR: In this article, the effect of thermal damage on the physical properties of carbonate rocks has been investigated, including microstructure, bulk density, effective porosity and P-wave velocity.
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Rock burst process of limestone and its acoustic emission characteristics under true-triaxial unloading conditions
Manchao He,J.L. Miao,J.L. Feng +2 more