This book outlines the stability analysis and rock support optimisation of headrace tunnel of Mai hydropower project in Nepal. The geology and the geo-technical parameters are comparatively poor at the project area as the headrace tunnel lies in Siwalik zone of Nepal consisting of Mudstone, Siltstone, Sandstone and shear zones. And also, Rock support defined during feasibility study of the project was inadequate for which this work has suggested some improvements in the support system of the headrace tunnel. The main objective of this study were to analyse the engineering geology and...