Results 101 to 110 of about 42,703 (308)

Modeling of Fiber Optic Strain Responses to Shear Deformation of Fractures

Energies
Identifying distributed strain sensing (DSS) patterns (or signatures), particularly those arising from different hydraulic fracture geometries, has gained significant attention and research effort.
Ruwantha Ratnayake, Ahmad Ghassemi
doaj   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Cover letter from the Kansas Induced Seismicity State Task Force to Governor Sam Brownback regarding the release of the State Action Plan for Induced Seismicity [2014]

, 2014
September 25, 2014 From: Rex Buchanan, Interim Director, Kansas Geological Survey; Mike Tate, Chief, Bureau of Water, Dept. of Health and Environment; Ryan Hoffman, Director, Conservation Division, Corporation Commission; State Task Force on Induced ...
Kansas Induced Seismicity State Task Force.
core   +1 more source

Three-Dimensional Numerical Investigation of Coupled Flow-Stress-Damage Failure Process in Heterogeneous Poroelastic Rocks

Energies, 2018
The failure mechanism of heterogeneous rocks (geological materials), especially under hydraulic conditions, is important in geological engineering.
Shikuo Chen, Chenhui Wei, Tianhong Yang, Wancheng Zhu, Honglei Liu, Pathegama Gamage Ranjith   +5 more
doaj   +1 more source

Seismicity and regional tectonics of the Estremadura, Southwestern Portugal [PDF]

, 1989
The RESTE Project was an integrated geophysical-geological study of the Estremadura, southwestern Portugal. The core of the programme consisted of the acquisition and analysis of microearthquake data.
Fonseca, Joāo F.B. Duarte
core  

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

Using monitoring and simulation to analyze the failure characteristics of multizone landslides controlled by faults: a case study

Scientific Reports
Slopes influenced by multiple faults are prone to large-scale landslides triggered by multi-regional failures. Understanding the failure process and sequence is essential for the sustainable development of mining operations.
Jinduo Li, Tianhong Yang, Wenxue Deng, Shigui Du, Penghai Zhang, Jia Wang, Dongdong Sun, Yuan Gao   +7 more
doaj   +1 more source

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source

Monitoring of Anthropogenic Seismicity in Italy: State of the Art

, 2018
In Italy the discussion about anthropogenic seismicity started after the deadly M6 Emilia earthquakes in 2012. Occurring these events in an area of gas and oil production, the question raised, whether exploitation induced crustal stress variations that ...
Braun, Thomas, Danesi, Stefania, Cesca, Simone, Morelli, Andrea, Dahm, Torsten   +4 more
core   +2 more sources

Constant Strain Rate Uniaxial Compression of Green Sandstone during SHPB Tests Driven by Pendulum Hammer

Shock and Vibration, 2017
During the Split-Hopkinson pressure bar (SHPB) tests driven by pendulum hammer, employing a proper special shape striker is an effective way to obtain dynamic stress equilibrium condition and to get constant strain rate of the rock specimen.
S. H. Li, W. C. Zhu, L. L. Niu, F. Dai
doaj   +1 more source