Results 11 to 20 of about 6,140 (264)

Experimental study on the deformation behaviour, energy evolution law and failure mechanism of tectonic coal subjected to cyclic loads

open access: yesInternational Journal of Mining Science and Technology, 2022
Compared to intact coal, tectonic coal exhibits unique characteristics. The deformation behaviours under cyclic loading with different confining pressures and loading rates are monitored by MTS815 test system, and the mechanical and energy properties are
Deyi Gao   +6 more
doaj   +1 more source

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

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  

Analysis of the Coal and Gas Outburst Mechanism from the Perspective of Tectonic Movement

open access: yesGeofluids, 2021
Coal and gas outburst is the extreme instability caused by stress, gas, and coal. In this review article, dominant factors and inducing factors of outburst were summarized; geologic features of typical outburst cases and the effects of tectonic movement ...
Qingyi Tu   +4 more
doaj   +1 more source

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

PRESENTDAY STRESS STATE OF THE SHANXI TECTONIC BELT

open access: yesГеодинамика 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
doaj   +1 more source

Case Studies of Rock Bursts in Tectonic Areas with Facies Change

open access: yesEnergies, 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
doaj   +1 more source

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   +3 more sources

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