An engineering geological appraisal of the Jamrani Dam Site, across the Gaula river in Kumaun Himalaya, India

A 130-m high dam is under construction across the River Gaula in Outer Kumaun Himalaya, India. It is located on Lower Siwalik rocks consisting of sandstone, siltstone and claystone. The present studies include the evaluation of the dam foundation by water pressure and grouting tests. The water pressure tests indicate the necessity to provide a grout curtain below the dam foundation. The grouting tests indicate that the rocks are amenable to grouting. The analyses of the dam abutments for stability using graphical and vector methods have indicated that the abutments may become unstable during foundation stripping.