Results 11 to 20 of about 14,421 (305)

Energy Release Analysis of a Severe Rockburst in a Headrace Tunnel Crossing a Tectonic Stress Zone

open access: yesShock 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
doaj   +2 more sources

Present-day stress state of the Shanxi tectonic belt

open access: yesGeodynamics & Tectonophysics, 2012
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. Studies of the present stress state of the Shanxi tectonic belt can contribute to the understanding of the relationship ...
Wang Kaiying, Ma Jin, Diao Guiling
openaire   +4 more sources

Inversion of multiphase tectonic stress field and fracture evolution in shale gas reservoirs [PDF]

open access: yesYouqicang pingjia yu kaifa
The shale gas reserves in the Wufeng Formation-Longmaxi Formation of the Luzhou Block in southern Sichuan are substantial. Tectonic movements alter the ground stress, significantly impacting the exploration and development of shale gas.
WANG Jiawei, ZHANG Bohu, HU Yao, HE Zhengyi, HU Xinxin, CHEN Wei, LUO Chao
doaj   +4 more sources

Effect of Deviatoric Stress on Deformation Energy of Tectonic Coal: A Modified Energy Model Considering Nonlinearity

open access: yesEnergy Science & Engineering
The deformation energy stored in soil‐like tectonic coal plays a critical role in coal and gas outbursts. Unlike hard rocks, tectonic coal exhibits pronounced stress–strain nonlinearity, invalidating traditional elastic energy models.
Chenghao Wang   +4 more
doaj   +2 more sources

Main controlling factors of natural fractures in tight reservoirs of the lucaogou formation in the jimsar sag, Xinjiang, China

open access: yesFrontiers in Earth Science, 2023
Natural fractures act as critical flow channels and reservoir space in the Lucaogou Formation tight reservoir of the Jimsar Sag. It is essential to identify the main controlling factors of natural fractures in order to achieve efficient development of ...
Yixin Yu   +6 more
doaj   +1 more source

Reconstruction of Tectonic Stresses in Central Sakhalin

open access: yesRussian Journal of Pacific Geology, 2023
The article presents the reconstruction of the tectonic stress field of the central part Sakhalin Island, obtained as a result of field tectonophysical studies in 2020–2022. The measurements made it possible to determine the predominant orientation of the main slickensides systems with different kinematics.
P.A. Kamenev   +3 more
openaire   +1 more source

The coulomb stress changes for correlation analysis of tectonic earthquake activity and volcanic of the 2001–2010 Merapi eruption based on focal mechanism data

open access: yesKuwait Journal of Science, 2023
The incident of increased seismic activity of the Merapi volcano was initiated by several tectonic earthquake phenomena. Analysis of the mechanism of tectonic earthquakes can be studied based on the combination of static stress on the rock.
Fitri Puspasari, Wahyudi
doaj   +1 more source

Tectonic stress: Models and magnitudes [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 1980
The combination of plate tectonic models of intraplate stress and observations of the directions of principal midplate stresses provides two types of constraints on the magnitude of deviatoric stress in the lithosphere. First, the fit of global tectonic stress models to observations can constrain stress magnitudes if the magnitude of one of the ...
Sean C. Solomon   +2 more
openaire   +1 more source

Investigation of Magnetohydrodynamics Technology and It's Application in Tension Drain [PDF]

open access: yesفناوری در مهندسی هوافضا, 2020
The purpose of this paper is to investigate the magnetohydrodynamics technology in creating artificial earthquakes. For this purpose, the possibility of expressing the electronegative mechanism for artificial earthquakes is first discussed.
Fathollah Ommi, Kouros Nekoufar
doaj  

RESULTS OF THE TECTONOPHYSICAL STUDY IN THE DZHANKHOT THRUST ZONE (NORTHWESTERN CAUCASUS)

open access: yesГеодинамика и тектонофизика, 2022
The paper presents the results of detailed structural analysis of the Dzhankhot thrust zone which is a part of the system of overthrust nappe structures in the southern slope of the Northwestern Caucasus.
A. V. Marinin, T. Yu. Tveritinova
doaj   +1 more source

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