نتایج جستجو برای: underground works
تعداد نتایج: 128573 فیلتر نتایج به سال:
this book review presents the merits and drawbacks of engineering geology for underground works edited by gattinoni et al. and published by springer in 2014. this book summarizes most of the problems an engineer may encounter in underground design, construction and operation.this book is useful for students and professionals in engineering geology and is also referable for scholars in relevant ...
The use of hydrothermal simulation models to improve the prediction of water inflows in underground works during drilling is tested in the Mont-Blanc tunnel, French and Italian Alps. The negative thermal anomaly that was observed during the drilling of this tunnel in 1960 is reproduced by long-term, transient hydrothermal simulations. Sensitivity analysis shows the great inertia of thermal phen...
W artykule przedstawiono pomiary geodezyjne prowadzone podczas prac w starej sztolni wodnej św. Antoniego Padewskiego miejscowości Horni Mesto (Czechy) ramach projektu udostepniania jej dla turystow. Prace obejmowaly wykonanie pomiarow geodezyjnych: nawiązania, orientacji oraz badania poligonowe pierwszej otwartej cześci sztolni, sporządzania rzutow granic celu przygotowania do poprowadzenia sz...
Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research Initiati...
RF channel measurements in underground mines have important applications in the field of mobile communications for improving operational efficiency and worker safety. This paper presents an experimental study of the ultra wideband (UWB) radio channel, based on extensive sounding campaigns covering the underground mine environment. Measurements were carried out in the frequency band of 2–5 GHz. ...
Two seams at the Tab-Simco abandoned underground coal mine site in southern Illinois were mined intermittently from the 1890’s until 1955, and later surface mined. The stripping operations resulted in several break-ins into the old underground works which were later buried by mine spoil. The resulting mine pool in the lower of the two seams has been producing an average of ~150 m per day of aci...
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