Results 21 to 30 of about 77,993 (207)
Structural and sedimentological analysis of the Pliocene–Late Miocene deposits from the Romanian Black Sea offshore based on borehole electrical imaging [PDF]
E3S Web of Conferences, 2019 This study presents the results of the structural and sedimentological interpretation of borehole electrical imaging data recorded in a gas exploration well from the Romanian offshore area of western Black Sea.
Niculescu Bogdan Mihai, Andrei Gina
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1992 In order to establish the methodology of hydraulic fracturing tectonic stress measurements, the relation between the so-called reopening pressure of longitudinal cracks and tectonic stresses is studied. To this end, the coupled problem of fluid flow in the crack and the crack reopening behavior in an impermeable rock is analyzed based on the linear ...
Takatoshi ITO, Kazuo HAYASHI
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Earthquake Predicting and Tectonic Stress Reducing Possibilities
, 2022 Abstract Recent satellite and ground-based observations prove that during the earthquake formative period VLF/LF and ULF electromagnetic emissions are observed in seismogenic areas. The present consolidated paper describes a theoretical model of the generation of electromagnetic emissions detected during the earthquake preparation periods, a ...
Kachakhidze, Manana +1 more
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PRESENTDAY STRESS STATE OF THE SHANXI TECTONIC BELT
Геодинамика и тектонофизика, 2015 The Shanxi tectonic belt is a historically earthquakeabundant area. For the majority of strong earthquakes in this area, the distribution of earthquake foci was controlled by the N–S oriented local structures on the tectonic belt.
Wang Kaiying, Ma Jin, Diao Guiling
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Геодинамика и тектонофизика, 2020 The current state of crustal stresses in the Caucasus and adjacent territories has been reconstructed. Stress inversion was performed by the cataclastic analysis of earthquake focal mechanisms considered as seismological strain indicators.
Yu. L. Rebetsky
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Sensors, 2021 Special regulations have been laid down to establish the principles and requirements for the safety and serviceability of old mining workings which are adapted for tourism.
Zbigniew Szczerbowski +1 more
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Case Studies of Rock Bursts in Tectonic Areas with Facies Change
Energies, 2019 Although tectonic areas with facies change (i.e., variation of coal seam thickness, coal seam dip angle, or coal quality) are one of the three major geological structures that induce rock bursts, case studies of rock bursts in these tectonic structures ...
Weiyao Guo +3 more
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Emplacement of sandstone intrusions during contractional tectonics [PDF]
, 2016 Acknowledgments We acknowledge the support of sponsoring companies of Phase 3 of the Sand Injection Research Group (SIRG). We are very grateful to John Waldron and Jessica Ross for the constructive reviews of the manuscript.
Alsop, G. Ian +4 more
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Energy Release Analysis of a Severe Rockburst in a Headrace Tunnel Crossing a Tectonic Stress Zone
Shock and Vibration, 2019 When tunneling in a hard and brittle rock mass within a tectonic stress zone, dynamic failure of rock mass-rockburst may occur. Considering the occurrence of rockburst is generally induced by a sudden release of storage elastic energy, a numerical ...
H. M. Tian +4 more
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Pre-Spud Mud Loss Flow Rate in Steeply Folded Structures
Oil & Gas Science and Technology, 2014 In this paper, a new method that predicts the pre-spud mud loss flow rate in formations with tectonic fractures of steeply folded structures is proposed.
Wang Zhiyuan, Sun Baojiang, Ke Ke
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