Results 51 to 60 of about 7,669 (224)
The Optimum Wavelet Base of Wavelet Analysis in Coal Rock Microseismic Signals
Advances in Mechanical Engineering, 2014 Coal rock rupture microseismic signal is characterized by time-varying, nonstationary, unpredictability, and transient property. Wavelet transform is an important method in microseismic signals processing. However, different wavelet bases yield different
Shoufeng Tang, Minming Tong, Xinmin He
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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 +4 more
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IEEE Access, 2018 Reliable detection and recovery of a microseismic event in large volume of passive monitoring data is usually a challenging task due to the low signal-to-noise ratio environment.
Naveed Iqbal +5 more
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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
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Microseismic energy evolution of high rock slop during excavation and after reinforcement
, 2016 Rock mass is known to exchange energy with the external environment when it is under load until it fails, a destabilization phenomenon driven by energy.
唐春安 +4 more
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Are microseismic ground displacements a significant geomorphic agent? [PDF]
, 2014 This paper considers the role that microseismic ground displacements may play in fracturing rock via cyclic loading and subcritical crack growth. Using a coastal rock cliff as a case study, we firstly undertake a literature review to define the spatial ...
Rosser, Nicholas J. +3 more
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Machine Learning Based Identification of Microseismic Signals Using Characteristic Parameters
, 2021 Microseismic monitoring system is one of the effective means to monitor ground stress in deep mines. The accuracy and speed of microseismic signal identification directly affect the stability analysis in rock engineering.
Longjun Dong +3 more
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Geophysical Research Letters, 2018 Previous studies show that a temporal drop in the b value (slope) of magnitude‐frequency distributions observed during hydraulic‐fracturing operations could signify the activation of a preexisting fault system.
Nadine Igonin +2 more
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Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang +9 more
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Introduction to this special section: Microseismic
, 2017 This month in The Leading Edge, we present a selection of papers on microseismic technology that captures recent trends in microseismic data processing, acquisition, and interpretation.
Julie Shemeta, James Rutledge
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