The Dharasu bridge slide of Uttarkashi was triggered due to heavy rainfall. The overburden/ rock covered steep slope during road widening operation got disturbed. The already disturbed slope aggravated due to prolonged heavy rain in the month of June and
Interim Report on Preliminary Slope Stability assessment of the recent disaster affected areas of Uttarkashi district, Uttarakhand by D.P.Dangwal, Sr.Geol., Neetu Chauhan, Mayukhee & T. Ghosh, Geologists, M-IV, NR, Dehradun, (LHZ/NR/UPUK/2013/053)
Houses and shops located at the confluence of the river and nala are at risk
UK_UTT_NH134_ L38
Dharasu bridge slide
Unloading of the debris, construction of steady retaining wall. Lined toe drain all along the affected areas, constructing gabions/crate walls structure with spurs.
Wedge failure, oversaturation of material, pore water pressure, reduction in shear strength