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Results 1 - 10 of 21
Technology News 526 - Proceedings of the International Workshop on Rock Mass Classification in Underground Mining7/1/2007 - Technology NewsThe International Workshop on Rock Mass Classification in Underground Mining provided a forum for leading practitioners of rock mass classification from around the world to come together and share their methods and experiences with the technique.
8/1/2000 - Conference papersRock drilling parameters including thrust, rotational speed, torque and velocity were examined to determine the ability to identify the strength of the rocks being drilled from the measured parameters.
4/9/2018 - Research projectsA project to develop strategies for identifying and managing geologic features that increase the risk of dynamic failures in underground coal deposits.
10/22/2016 - Research projectsA project to define the geologic and stress criteria associated with an elevated risk of coal bursts, considering both U.S. and international experience through visits to coalfields.
9/22/2015 - Research areasRoof Support Topic Page
8/1/2006 - Conference papersDescribes the procedures and thought processes used by coal mine geologists when determining various mineability and reserve extraction feasibility issues. The paper also address underground geologic hazard mapping and prediction techniques.
This chapter summarizes how certain geologic features may be associated with unexpected increases in gas emissions during coal mining. These unexpected emissions have the potential to create explosive conditions in the underground workplace. Also discu...
8/1/2004 - Conference papersAverage UCS may differ between coreholes but not be statistically significant, and widely spaced coreholes may be able to identify valid spatial trends in rock strength. The paper describes NIOSH's extensive investigation into these issues.
8/1/2002 - Conference papersTwo examples of an echelon mining-induced fractures seen in hard-rock mines provided a basis for inferring that fracture zones and bedding plane sap rations immediately surrounding mine openings are promoted by oblique shear into the openings.
7/1/2001 - Book chaptersThis paper discusses (1) the results of a ground-based hyperspectral imaging tool used to map the geology of an open-pit mine highwall, and (2) interferometric synthetic aperture radar and how it can be used in a variety of geotechnical situations.