Records of the Geological Survey of India, Volume 140, Part 5The Survey, 2007 - 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 190
... recommended to thoroughly clean the base of cut off trench ( COT ) with air and water jets before backfilling with impervious soil . Uneven rock exposures / humps along the axis are recommended to be removed , by blasting if necessary ...
... recommended to thoroughly clean the base of cut off trench ( COT ) with air and water jets before backfilling with impervious soil . Uneven rock exposures / humps along the axis are recommended to be removed , by blasting if necessary ...
Page 192
... recommended at the intersection points of prominent joints and highly fractured zones . Rock shear test conducted by APERL in block 59 indicated higher compressive strength of rock . Permeability data is analysed and on the basis of ' k ...
... recommended at the intersection points of prominent joints and highly fractured zones . Rock shear test conducted by APERL in block 59 indicated higher compressive strength of rock . Permeability data is analysed and on the basis of ' k ...
Page 210
... RECOMMENDATIONS : 1. Part of the foundation is covered by weathered rock . It is recommended to excavate further by about a meter in weathered zones to reach the foundation grade of rock . 2. To excavate the shears to a depth of twice ...
... RECOMMENDATIONS : 1. Part of the foundation is covered by weathered rock . It is recommended to excavate further by about a meter in weathered zones to reach the foundation grade of rock . 2. To excavate the shears to a depth of twice ...
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Common terms and phrases
abutment Additional Item amphibolite ANDHRA PRADESH bed rock biotite block boreholes boreholes drilled carried charnockite clay CONSTRUCTION STAGE GEOTECHNICAL cover Cuddapah cut off trench cut-off depth DISTRICT dolerite dolerite dyke downstream earth dam excavated exposed field season flank foliation Formation foundation fresh rock garnet garnetiferous geological mapping GEOTECHNICAL INVESTIGATION gneiss gold granite granitoids granulite gravity grey ground level hornblende indicated intrusive joints KARNATAKA KERALA Khondalite kimberlite Kumar laterite limestone lineament located magnetite migmatite mineralisation minerals moderate monzogranite NE-SW NW-SE overburden pegmatite Peninsular Gneissic Complex penstock permeability tests powerhouse project authorities proposed Puducherry pyroxene pyroxene granulite quartz quartz veins quartzite river rock types samples schist Schist belt seismic shale shear zone slope soil Specialised Thematic Mapping spillway sq km STAGE GEOTECHNICAL INVESTIGATION strike length structure studies suggested Tamil Nadu terrain thickness toposheet traversed tunnel upto values varies vertical weir width