Results 131 to 140 of about 85,104 (305)

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 more
wiley   +1 more source

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

open access: yesDeep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang   +4 more
wiley   +1 more source

Assessment of seismic potential impacts of an Mw 8.4 hypothetical earthquake in central Nepal province

open access: yesNatural Hazards Research
The national capital of Nepal is situated on a lacustrine sediment basin. The country has had major seismic events that have resulted in significant damage to structures, human casualties, and substantial economic losses.
Siddam Reddy Vineetha, Chenna Rajaram
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

Rapid estimation of MS6.0 scenario earthquake acceleration waveform and its destructive capacity in local area based on the MS4.7 earthquake in Anhui Province

open access: yes地球与行星物理论评
On September 18, 2024, the MS4.7 earthquake occurred in Hefei, Anhui Province, causing certain building damage and social panic. This was the largest earthquake of magnitude to occur in the Hefei area in 2024.
Zongchao Li   +4 more
doaj   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

open access: yesDeep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu   +3 more
wiley   +1 more source

Case Report: Geographic Information System for Timely Search and Rescue Operation: A Case Study in Rigan Earthquake

open access: yesHealth in Emergencies & Disasters Quarterly, 2015
Background: Short golden time is important to save the injured in earthquake and to start search and rescue (SAR) operation as soon as possible in affected regions. This study evaluated application of geographic information system (GIS) for SAR operation
Ahmad Soltani   +2 more
doaj  

A scenario-based approach for immediate post-earthquake rockfall impact assessment [PDF]

open access: hybrid, 2023
Massimiliano Alvioli   +5 more
openalex   +1 more source

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