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Permeability tests at the Simly Dam Project
Summary Permeability tests played an important role in evaluating and delineating open voids and permeable zones in rocks of the Simly Dam Project. The results of thesein situ tests in 62 boreholes, at the investigation and design stages indicated that the rocks are open up to 23 m depth and the flow is predominantly along the bedding planes (strikewise). This necessitated an elaborate permeability test and test grouting programme, wherein 473 water pressure tests were conducted in 53 boreholes. The permeability test results are fairly comparable to grout intake. This helped in locating the grout curtain and developing design criteria for the three-row grout curtain on the left abutment perpendicular to the dam axis in order to intercept strikewise seepage.
Permeability tests at the Simly Dam Project
Summary Permeability tests played an important role in evaluating and delineating open voids and permeable zones in rocks of the Simly Dam Project. The results of thesein situ tests in 62 boreholes, at the investigation and design stages indicated that the rocks are open up to 23 m depth and the flow is predominantly along the bedding planes (strikewise). This necessitated an elaborate permeability test and test grouting programme, wherein 473 water pressure tests were conducted in 53 boreholes. The permeability test results are fairly comparable to grout intake. This helped in locating the grout curtain and developing design criteria for the three-row grout curtain on the left abutment perpendicular to the dam axis in order to intercept strikewise seepage.
Permeability tests at the Simly Dam Project
Izharul, Haq (author) / Hashmi, F. A. S. (author)
1982
Article (Journal)
English
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