Results 21 to 30 of about 5,933,277 (298)

Urban Gardening and Green Space Governance: Towards New Collaborative Planning Practices [PDF]

open access: yes, 2016
In the context of urban densification and central urban areas’ lack of open spaces, new forms of small-scale urban gardening practices have emerged.
Tappert, Simone   +7 more
core   +1 more source

A Novel Fatigue Damage Model of Rock considering Temperature Effects

open access: yesAdvances in Civil Engineering, 2020
The deformation rules and failure types of rock fatigue damage at different temperatures are quite different, and existing constitutive theory cannot describe them quantitatively.
Yaoliang Zhu   +5 more
doaj   +1 more source

Creep Damage Evolution of Marble From Acoustic Emission and the Damage Threshold

open access: yesFrontiers in Earth Science, 2020
For the underground engineering, time-dependent behavior (i.e., creep) of rocks is one of the main reasons for instability of surrounding rock in great stress conditions.
Xueying Liu   +5 more
doaj   +1 more source

Determination method of fatigue strength and precursors of fatigue failure of porous weakly cemented siltstone

open access: yesMeitan xuebao, 2023
In order to study the fatigue behavior of porous weakly cemented siltstone, a quantitative calculation method of characteristic stress was established based on uniaxial step loading and unloading tests of siltstone.
Mingchun LIANG   +4 more
doaj   +1 more source

Mechanism of country rock damage and failure in deep shaft excavation under high pore pressure and asymmetric geostress

open access: yes工程科学学报, 2020
With the development of the mining industry, a large number of accessible shallow mineral resources are being depleted, and some have now been completely exhausted.
Li-yuan LIU   +4 more
doaj   +1 more source

Experimental study on disaster mechanism of completely weathered granite landslide induced by extreme rainfall

open access: yesGeoenvironmental Disasters, 2023
Background With the increased frequency of extreme weather, landslides induced by extremely heavy rainfall pose a major threat to human lives and property safety. In July 2020, a landslide occurred in the strongly weathered Laoshan Scenic Spot in Qingdao,
Honghua Liu   +7 more
doaj   +1 more source

The Role of the Body in Pandemic Geographies of Encounter: Anti-Restriction Protesters Between Collective Action and Political Violence

open access: yesUrban Planning, 2023
This article looks at public anti-restriction protests by framing public space as a vital component of urban life. It argues that the body is rarely introduced as a scale of spatial analysis and usually plays a more prominent role in the subfields of ...
Sabine Knierbein, Richard Pfeifer
doaj   +1 more source

Development of urban underground space in coastal cities in China: A review

open access: yesDeep Underground Science and Engineering, 2023
The development of urban underground space is a critical way to alleviate the lack of urban resources, and improve environmental conditions as well as residents' quality of life, which has important practical significance.
Peng Yu   +6 more
doaj   +1 more source

Numerical Study on the Evolution of Mesoscopic Properties and Permeability in Sandstone Under Hydromechanical Coupling Conditions Involving Industrial Internet of Things

open access: yesIEEE Access, 2018
In an attempt to study microcracks development, coordination number, volumetric strain, and permeability evolution of sandstone, the hydromechanical coupling mesoscopic simulation was carried out using Particle Flow Code 2D software based on experimental
Yanyan Cai   +3 more
doaj   +1 more source

Space Accessibility and Equity of Urban Green Space

open access: yes, 2023
Urban green space is an essential form of infrastructure for cities, providing a significant spatial guarantee for sustainable urban development, an essential ecological, social, and cultural function, and an important symbol of urban modernisation and ...
Wen-Juan Ma   +3 more
core   +1 more source

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