Results 111 to 120 of about 34,203 (251)

Status and Outlook for Research on Geothermal Heating Technology

Zhileng xuebao, 2021
Geothermal energy is widely used in building heating owing to its stability, large reserves, and wide distribution. Beginning from the classification of geothermal energy heating technology, this paper elaborates on the basic concepts, development ...
Wang Fenghao, Cai Wanlong, Wang Ming, Gao Yuan, Liu Jun, Wang Zhihua, Xu Han   +6 more
doaj   +2 more sources

Horizontal borehole azimuth optimization for enhanced stability and coal seam gas production

Rock Mechanics Bulletin
Horizontal boreholes have been widely used to extract natural gas from coal seams. However, these boreholes can encounter severe instability issues leading to production interruption.
Erfan Saber, Qingdong Qu, Saiied M. Aminossadati, Yiran Zhu, Zhongwei Chen   +4 more
doaj   +1 more source

The detection and tracking of mine-water pollution from abandoned mines using electrical tomography [PDF]

, 2009
Increasing emphasis is being placed on the environmental and societal impact of mining, particularly in the EU, where the environmental impacts of abandoned mine sites (spoil heaps and tailings) are now subject to the legally binding Water Framework and ...
Chambers, J.E., Klinck, B.A., Kuras, O., Meldrum, P.I., Ogilvy, R.D., Palumbo-Roe, B., Wilkinson, P.B.   +6 more
core  

Permafrost Mass Wasting in Ice‐Rich Landscapes: Recent Advances (2013 to 2024) on Mechanisms, Dynamics and Impacts

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Across circumpolar permafrost regions, climate change is destabilizing ice‐rich hillslopes, increasing the frequency and magnitude of thaw‐driven mass wasting. This paper reviews recent studies (2013–2024) on thaw‐driven mass wasting, focusing on the processes, morphology and trajectories of geomorphic change and their implications for ...
J. M. Young, L. Farquharson, J. Luo, N. Nesterova, J. van der Sluijs, S. V. Kokelj   +5 more
wiley   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz, Oryński Szymon, Marciniak Artur, Osuch Marzena   +3 more
wiley   +1 more source

Limit of crustal drilling depth

Journal of Rock Mechanics and Geotechnical Engineering, 2017
Deep drilling is becoming the direct and the most efficient means in exploiting deep mineral resources, facilitating to understanding the earthquake mechanism and performing other scientific researches on the Earth's crust.
Y.S. Zhao, Z.J. Feng, B.P. Xi, D. Yang, W.G. Liang, Z.J. Wan   +5 more
doaj   +1 more source

The measurement of long period and secular deformation with deep borehole tiltmeters [PDF]

Two clusters of instruments were emplaced in fractured bedrock in eastern Massachusetts in 1970 and 1975. The intrasite agreement at tidal periods was about two percent, but there is no agreement at longer periods.
Cabaniss, G. H.
core   +1 more source

GeoTechnical Investigations for the Dalton Highway Innovation Project As A Case Study of the Ice-Rich Syngenetic Permafrost [PDF]

, 2010
INE/AUTC 11 ...
Dillon, Matthew, Kanevskiy, Mikhail, O’Donnell, Jonathan, Shur, Yuri, Stephani, Eva   +4 more
core  

Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone

Journal of Field Robotics, EarlyView.
ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown, Robert Clarke, Ali Akbari, Ferdian Jovan, Jameel Marafie, Ognjen Marjanovic, Sara Bernardini, Tom Richardson, Simon Watson   +8 more
wiley   +1 more source

SUBSTITUTING FOR THE STATE: The Sovereignty Impacts of Diverse Citizens’ Off‐grid Infrastructure Strategies in South Africa

International Journal of Urban and Regional Research, EarlyView.
Abstract In South Africa, citizens in both low‐ and high‐income areas are increasingly providing their own services to mitigate the unreliability, unaffordability and inaccessibility of state services. This article examines diverse case studies across socio‐economic and residential typologies to explore shifts in service provision responsibilities from
Fiona Anciano, Charlotte Lemanski, Christina Culwick Fatti, Margot Rubin   +3 more
wiley   +1 more source