Results 11 to 20 of about 7,534 (292)

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

Youqicang 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

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, W. Z. Chen, C. S. Ma, D. S. Yang, X. J. Tan   +4 more
doaj   +2 more sources

Controlling effect of palaeo-tectonic stress field on gas occurrence [PDF]

Archives of Civil Engineering
The paleo-tectonic stress fieldwas hereby inverted by using the stereographic projection method through field and underground observations of conjugate shear joints.
Weidong Gong, Kunyun Tian, Ruilin Zhang, Xing Xu, Wenyong Zhang, Juan Luo, Qing Yuan   +6 more
doaj   +2 more sources

Numerical modeling of tectonic stress field and fault activity in North China

Geodesy and Geodynamics, 2012
On the basis of a 3-dimension visco-elastic finite element model of lithosphere in North China, we numerically simulate the recent mutative figures of tectonic stress field.
Li Yan, Chen Lianwang, Zhan Zimin
doaj   +2 more sources

Anisotropic scaling of tectonic stylolites: A fossilized signature of the stress field? [PDF]

Journal of Geophysical Research: Solid Earth, 2010
Vertical stylolites are pressure solution features, which are considered to be caused by horizontal tectonic loading, with the largest principal compressive stress being (sub‐)parallel to the Earth's surface. In the present study we analyze the roughness of such tectonic stylolites from two tectonic settings in southern Germany and northeastern Spain ...
Ebner, Marcus, Toussaint, Renaud, Schmittbuhl, Jean, Koehn, Daniel, Bons, Paul   +4 more
openaire   +4 more sources

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
doaj   +3 more sources

Multiple Linear Regression Inversion of the Ground Stress Field in Rock Masses for Tunnel Engineering: A Novel Approach to Stress Field Reconstruction

Buildings
The inversion of the ground stress field in rock masses is critical for accurate tunnel and underground engineering design. This study addresses the challenge of accurately capturing both the primary and secondary stress field components in rock masses ...
Wei Meng, Hongyang Zhou, Chun Luo, Shuai Qin, Xuefu Zhang, Binke Chen   +5 more
doaj   +2 more sources

Current stress field and its relationship to tectonism in a coal mining district, central China, for underground coal energy exploration

Energy Reports, 2022
Adopting 47 sets of in situ stress measurements taken at depths ranging from 417 to 1123 m in a coal mining district in central China by the overcoring method, we characterize the magnitude and orientation of the current stress field and its relationship
Peng Li, Meifeng Cai, Qifeng Guo, Fenhua Ren, Shengjun Miao   +4 more
doaj   +1 more source

Insights into fundamental problems of rockburst under the modern structure stress field

Scientific Reports, 2022
Rockbursts are some of the most severe dynamic disasters in coal mines. In this paper, the discrimination method of the tectonic stress field is proposed by analyzing the modern stress field in China.
Hai Rong, Nannan Li, Hongwei Zhang, Dequan Sun, Bingjie Huo   +4 more
doaj   +1 more source

Influence of preexisting structures on the variation of neotectonic paleostress orientation in an area of the Southeastern Brazilian Margin

Brazilian Journal of Geology, 2021
The Southeastern Brazilian Margin presents a NE-SW-striking structural framework, which is characteristic of the Neoproterozoic Ribeira Belt. Other important structural trends along the area are associated with E-W and NW-SE-striking structures, being ...
Thaís Coelho Brêda, Claudio Limeira Mello, Anderson Moraes   +2 more
doaj   +1 more source