Results 61 to 70 of about 1,776,592 (192)

Analysis of surface transient charge and the interdependent response of microseismic signal during the deformation of coal

矿业科学学报, 2020
The stress changes, transient charges and microseismic signals of briquette samples during uniaxial compression failure were monitored and analyzed by using the self-made experimental system for measuring transient charges and microseismic signals on the
Li Jing, Guan Cheng, Wang Zhen, Li Chengwu   +3 more
doaj   +1 more source

Denoising Method for Microseismic Signals with Convolutional Neural Network Based on Transfer Learning

International Journal of Computational Intelligence Systems, 2023
Microseismic signals contain various information for oil and gas developing. Increasing the signal-to-noise ratio of microseismic signals can successfully improve the effectiveness of oil and gas resource exploration.
Xuegui Li, Shuo Feng, Yuantao Guo, Hanyang Li, Yingjie Zhou   +4 more
doaj   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Time difference of arrival estimation of microseismic signals based on alpha-stable distribution [PDF]

Nonlinear Processes in Geophysics, 2018
Microseismic signals are generally considered to follow the Gauss distribution. A comparison of the dynamic characteristics of sample variance and the symmetry of microseismic signals with the signals which follow α-stable distribution reveals that ...
R.-S. Jia, R.-S. Jia, Y. Gong, Y. Gong, Y.-J. Peng, Y.-J. Peng, H.-M. Sun, H.-M. Sun, X.-L. Zhang, X.-L. Zhang, X.-M. Lu, X.-M. Lu   +11 more
doaj   +1 more source

Study on Fluid Pressure in Tubing, Dynamic Stress in Reservoir, and Fracture Propagation Morphology During Variable‐Rate Hydraulic Fracturing

Energy Science &Engineering, EarlyView.
Variable‐rate hydraulic fracturing can induce unsteady flow in the tubing, thereby generating fluctuating fluid pressure near the bottom‐hole reservoir. Dynamic stress is generated in the reservoir under the action of fluctuating fluid pressure and propagates as stress waves.
Zhu Ge, Wang Chaojing, Li Weicheng
wiley   +1 more source

Research on Feature Fusion Method of Mine Microseismic Signal Based on Unsupervised Learning

, 2021
The feature extraction of high-precision microseismic signals is an important prerequisite for multicategory recognition of microseismic signals, and it is also an important basis for intelligent sensing modules in smart mines.
Rui Liu
core   +1 more source

Volatile Conduits Beneath Vulcano Island (Italy) Revealed by High‐Resolution Nodal Local Earthquake Tomography During Volcanic Unrest

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Understanding shallow magmatic and hydrothermal systems at active volcanoes is essential for interpreting unrest and forecasting eruptions. We present the first high‐resolution three‐dimensional Vp $Vp$, Vs $Vs$, and Vp/Vs $Vp/Vs$ models of Vulcano Island, Aeolian Islands, Italy, derived from a dense nodal seismic network.
Iván Cabrera‐Pérez, Douglas Sami Stumpp, Sofía Castro, Michaïl Henry, Tullio Ricci, Alessandra Sciarra, Matteo Lupi   +6 more
wiley   +1 more source

Noise Suppression Method of Microseismic Signal Based on Complementary Ensemble Empirical Mode Decomposition and Wavelet Packet Threshold

IEEE Access, 2019
Aiming at the situation that complementary ensemble empirical mode decomposition (CEEMD) noise suppression method may produce redundant noise and wavelet transform easily loses high-frequency detail information, considering wavelet packet transform can ...
Ling-Qun Zuo, Hong-Mei Sun, Qi-Chao Mao, Xiao-Ying Liu, Rui-Sheng Jia   +4 more
doaj   +1 more source

Adaptive filtering of microseismic data for monitoring a water-conducting fractured zone in a mine

Scientific Reports, 2022
Water-conducting fractured zones in a rock mass can cause problems in mining. Attempts have been made to monitor their development using microseismic signals.
Hongjiang Li, Liang Han, Donglin Dong
doaj   +1 more source

Simulator‐Based Bayesian Inference of Enhanced Geothermal Reservoir Properties

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Inversions of dynamic multi‐scale multi‐physics subsurface system properties rely on the effective sampling of high‐dimensional parameter spaces and are thus notoriously difficult to perform. The associated models are defined by complex nonlinear relationships with potentially stochastic components, which lead to analytically intractable ...
Kwabena Atobra, Gregor Hillers, Vladimir Lyakhovsky, Eyal Shalev, Arto Klami, Ulpu Remes   +5 more
wiley   +1 more source