Records of the Geological Survey of India, Volume 139, Part 5The Survey, 2006 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 152
... holes ) was suggested in 4 rows , spaced at 3 m apart . The holes in each row spaced at 6 m centre to centre , in staggered fashion , drilled for a depth of 12 m . Curtain grouting ( A - holes ) was also suggested along the centre line ...
... holes ) was suggested in 4 rows , spaced at 3 m apart . The holes in each row spaced at 6 m centre to centre , in staggered fashion , drilled for a depth of 12 m . Curtain grouting ( A - holes ) was also suggested along the centre line ...
Page 162
... holes drilled during preliminary investigation were terminated in the highly weathered rock except for 3 boreholes which have been drilled through fairly fresh rock . Reported permeability results obtained in these bore holes vary from ...
... holes drilled during preliminary investigation were terminated in the highly weathered rock except for 3 boreholes which have been drilled through fairly fresh rock . Reported permeability results obtained in these bore holes vary from ...
Page 170
... holes drilled at Ch . 387 and 435m . In two holes drilled at Ch . 699m and Ch . 723m the grouting was effective to make the foundation impervious . Moderate permeability values have been observed at Ch . 675m . Evaluation of the post ...
... holes drilled at Ch . 387 and 435m . In two holes drilled at Ch . 699m and Ch . 723m the grouting was effective to make the foundation impervious . Moderate permeability values have been observed at Ch . 675m . Evaluation of the post ...
Contents
ANDHRA PRADESH | 1 |
Quaternary Geology | 9 |
Project National Geochemica Mapping NGCM | 16 |
Copyright | |
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abutment alignment amphibolite Andhra Pradesh assess bands basin bed rock biotite biotite gneiss block boreholes carried charnockite coast cut-off trench depth district dolerite drilled dunes dyke earth dam enclaves excavation exposed field season folds foliation Formation foundation fresh rock garnet Geochemical Mapping geological mapping GEOTECHNICAL INVESTIGATION gneiss gold grained granite granite gneiss granitoids granodiorite granulite gravity grouting holes hornblende indicated intrusive Item joints Karnataka Kerala Khondalite kimberlite laterite limestone lithounits located lugeons mafic metabasalt migmatite mineralisation minerals moderate mylonite NNW-SSE NW-SE occur overburden pegmatite penstock permeability tests phyllite powerhouse project authorities proposed pyroxene quartz quartz veins quartzite reservoir river samples were collected sand schist belt shale shear zone shotcrete slope soil Specialised Thematic Mapping spillway STAGE GEOTECHNICAL stream sediment samples strike structure studies sulphide surface Tamil Nadu thick toposheet traverse trending tsunami ultramafic upto values varying vertical weathered weir width