Results 61 to 70 of about 4,259,217 (301)
An optimizing microseismic method for rock burst early warning based on mining production process
Deep Underground Science and Engineering, EarlyView.A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han +6 more
wiley +1 more source
Moment tensor inversion by fitting surface waves for the m 5.5 earthquake in Kraljevo [PDF]
TehnikaThis paper focuses on the inversion of seismic data from the Kraljevo earthquake to determine the source parameters and provide a comparison with classical methods.
Sidorov-Biryukov Dmitry D. +1 more
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, 2012 New Manual of Seismological Observatory Practice 2 (NMSOP2)
Havskov, J., Bormann, P., Schweitzer, J.
openaire +1 more source
Borehole seismic methods for opencast coal exploration [PDF]
, 1990 Surface seismic techniques lack the resolution to image the top 100m or so of the earth's surface necessary for opencast coal exploration. The work reported in this thesis is the development of borehole seismic methods making use of the closely spaced ...
Kragh, J. Edward
core
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Dizhen xuebao目前我国约有数百个井下地震观测台。井下观测可以避免地表噪声干扰和场地效应，填补在高噪声区域获取高精度地震资料的空白。增加井下观测台站可以弥补地表观测能力的不足，使观测台站的布局更加科学合理，从而也为地震学观测研究开辟新途径。井下台网观测波形有利于准确测定地震参数，建立高精度波速模型，探索地震成因，从而推动地震预报工作。唐山强震就发生在低速体与高速体之间，文安地震前波速出现了可信的地震前兆性降低异常。井下地震仪可观测到地表反射波，对研究地壳精细结构和资源评估均有重要意义。井下观测到的震级 ...
Jiren Xu +4 more
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Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Dizhen xuebao基于关东盆地及周边区域强震动观测记录，采用广义反演法分离得到了1194次地震的震源谱、区域路径衰减和74个台站的场地反应，探讨了场地反应与vS30、沉积层厚度Z3.2的相关性，分析了水平竖向谱比法（HVSR）评估场地反应的适用性。结果表明：研究区内地震矩M0与拐角频率fc满足lgM0＝（22.817±0.797）−3lgfc，平均应力降为14.9 MPa，品质因子经验关系为Q （f ）＝67f 1.19；盆地内台站的场地反应与vS30在地震动低频段（0.5—2.0 Hz）呈中强相关，大于2.0 ...
Yefei Ren +6 more
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Deep Underground Science and Engineering, EarlyView.The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng +7 more
wiley +1 more source
CT&F Ciencia, Tecnología & FuturoSeismic modeling is an important step in the process used for imaging Earth subsurface. Current applications require accurate models associated with solutions of the wave propagation equation in real media.
Sheryl Avendaño, J.-C Muñoz-Cuartas
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