Results 121 to 130 of about 310,222 (307)

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

open access: yesDeep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza   +4 more
wiley   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

The 2024–2025 seismic sequence in the Santorini-Amorgos region: Insights into volcano-tectonic activity through high-resolution seismic monitoring

open access: yesSeismica
The 2024–2025 seismic sequence in the Santorini-Amorgos region demonstrates a complex evolution revealing the interaction between tectonic and volcanic processes.
Ioannis Fountoulakis   +1 more
doaj   +1 more source

ON RELOCATION OF SETTLEMENT AFTER THE CIANJUR EARTHQUAKE AND LANDSLIDE 2022

open access: yesPLANNING MALAYSIA
An Earthquake and landslide occurred in Cianjur, Indonesia, in November 2022.  This resulted in a lot of losses, both fatalities and the disappearance of some settlements.  Relocation would be obligatory as post-disaster mitigation policies for areas with highest disaster threats.  This research was conducted to find its relocation areas.
Aulia Putri Sabita   +2 more
openaire   +1 more source

Japanese Americans in relocation centers

open access: yes, 1943
Document which overviews how and why Japanese Americans were removed from the West Coast, put into temporary assembly centers and then incarceration camps as well as what the War Relocation Authority provides for the incarcerees.The collection contains ...
United States. War Relocation Authority: author
core  

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

Memorandum on Policy of the War Relocation Authority in Granting Leave from Relocation Centers

open access: yes, 1942
This Policy of the War Relocation Authority discusses the different types of leaves, the procedures to obtain the permit for the leaves and other topics related to the application and securing of the leaves.The War Relocation Authority (WRA) was created ...
United States. War Relocation Authority: publisher
core  

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

open access: yesDeep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu   +6 more
wiley   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

open access: yesDeep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Statement of policy of the War Relocation Authority in providing food for relocation centers

open access: yes, 1943
Statement in response to public interest in the food provided by the government to incarceration camps. The War Relocation Authority discusses restrictions on food, food production, and incarcerees in the agricultural industry.The collection contains ...
United States. War Relocation Authority: author
core  

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