... displacement underground reservoir characterization cov probabilistic analysis stability diameter air energy storage cavern stability social responsibility cavern cavern stability variability effect rock mech rock eng ARMA 24 950 Probabilistic Analysis of Compressed Air Energy Storage Cavern...

... ABSTRACT: The use of cemented hydraulic backfill in underground mines has gained momentum in many parts of the world. The effect of material composition on the hydraulic backfill material in South African gold mines has been determined through research. A high level of variation of backfill...

... pours has been established as part of a QA/QC program. The database of the testing has the results of 17,212 UCS samples. strength paste sample database backfill knowledge management paste plant cement content median strength kPa stope moisture content Stillwater underground...

... ABSTRACT In this study, we developed a novel in-situ permeability test system to utilize in the assessment of in-situ air tightness of underground lined rock caverns for CAES system. We carried out both air and water permeability tests in a concrete block and rock mass to evaluate...

... key blocks, after the keystones of a masonry arch (Figure 1). Support of the keystone of an arch is fundamental; loss of the keystone means deterioration of stability and collapse if that deterioration is not speedily countered. The same is true in the case of the hypothetical underground cavern shown...

... for favorability underground, chiefly in terms of excavation characteristics and factors affecting cavern operation (see Giramonti, 1976). Estimates of area and depth were made and major geologic reports examined to determine rock type, thickness, uniformity, structure, and stress conditions. High ranking depends...

... therefore been focused during the past five years on the development of alternative means of bulk energy storage; these alternatives include underground pumped hydro (UPH), compressed air energy storage (CAES), various types of batteries, heat storage and magnetic energy storage. Of these, the underground...

... schonendes Sprengen einzulegen. Das Strossensprengung-Programm ermöglicht eine Berechnung von Bohrlochplanen auf Grund der verwendeten Bohrdiameter sowie für normale wie grosse Verhältnisse zwischen Bohrlochentfernung und Vorgabe. INTRODUCTION In the development and design of surface and underground...