This 244 m long masonry dam in lime mortar was constructed in the year 1931, and had been leaking profusely at a number of points over the period. It had developed a large number of voids in the body, as the lime mortar was washed out.
50 mm thick guniting on the upstream face of the dam in the badly leaking reaches was carried out with 1:3 cement mortar. In balance reaches, cement pointing in rich cement mortar was done. To arrest the seepage and to consolidate the body of the dam, an average of 18 m deep drilling and grouting by the percussive method was carried out through the primary and secondary holes.
The drilling was done in two rows 2 m apart with a hole spacing of 3 m centre to centre and staggered. Drilling was performed in descending order. This treatment reduced the seepage within the permissible limit
-pvt-ltd/PAGARA_DAM_ublrur)