Results 71 to 80 of about 2,891 (238)
Energies, 2022 According to the development requirements of green mining of coal resources, it is imperative to improve the extraction rate of coal and the application of safe and efficient mining technology.
Shengrong Xie +8 more
doaj +1 more source
Distribution of Side Abutment Stress in Roadway Subjected to Dynamic Pressure and Its Engineering Application [PDF]
, 2015 The borehole stress-meter was employed in this study to investigate the distribution of the side abutment stress in roadway subjected to dynamic pressure.
Jiang Zhigang +4 more
core +2 more sources
Optimization study on filling material beside gob-side entry retaining
Meikuang Anquan, 2021 In order to make gob-side filling body of gob-side entry retaining adapt to the roof movement, the properties of concrete material is modified by adding polymer and steel fiber to achieve the purpose of “yield-support”. The test of modified concrete was carried out to test the uniaxial compressive strength under different ratios, and the best ratio of ...
openaire +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley +1 more source
Geofluids, 2022 When gob-side entry retaining is adopted in the mining face with large cutting height, due to large stope space, strong dynamic pressure, and other reasons, the filling body is usually broken and unstable due to improper width of filling body, and the ...
Shijiang Pu +5 more
doaj +1 more source
Soft Roof Failure Mechanism and Supporting Method for Gob-Side Entry Retaining
Minerals, 2015 To study the soft roof failure mechanism and the supporting method for a gateway in a gently inclined coal seam with a dip angle of 16° kept for gob-side entry retaining, and through the methodology of field investigation and numerical and analytical modeling, this paper analyzed the stress evolution law of roof strata at the working face end and ...
Hongyun Yang +4 more
openaire +2 more sources
Dynamic coordination mechanism of paste strength and roof load for gob-side entry retaining [PDF]
Proceedings of the International Seminar on Paste and Thickened Tailings, 2017 After filling, paste reaches its heyday with the paste wall capable of repeatedly withstanding the fracture pressure of goaf roof. The strength of paste wall should be no less than the roof weighting. In order to identify the dynamic coordination mechanism of filling wall strength and roof pressure, the movement principle of goaf roofs was studied in ...
Nong Zhang, Changliang Han, Ke Yang
openaire +1 more source
British Educational Research Journal, EarlyView.Abstract This paper explores the role of community stakeholders in supporting the educational trajectories of students experiencing socio‐economic disadvantage in the Irish context. Building on international and national policy debates, the study examines how community‐based organisations, statutory services and outreach initiatives work alongside ...
Aoife Joy Keogh, Deirdre McGillicuddy
wiley +1 more source
Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11) [PDF]
, 2022 The problem of rock mechanics and engineering is an old and new subject encountered by human beings in their struggle with nature for survival and development.
core +1 more source
Biological Reviews, EarlyView.ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson +9 more
wiley +1 more source