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 161
... rock cover over the tunnel grade vary from 16 m ( at entrance portal ) to 43 m ( at exit portal ) , considered to be adequate rock cover for a 5 m dia tunnel . 3 - D geological mapping of the tunnel has been carried out . Predominantly ...
... rock cover over the tunnel grade vary from 16 m ( at entrance portal ) to 43 m ( at exit portal ) , considered to be adequate rock cover for a 5 m dia tunnel . 3 - D geological mapping of the tunnel has been carried out . Predominantly ...
Page 198
... Rock burst occurrences has been reported at Kolar Gold Field since 1898. The rock burst during mining for gold was mainly concentrated in stressed fault / fracture zones and rocks with high E - modulus like gneisses , granites and ...
... Rock burst occurrences has been reported at Kolar Gold Field since 1898. The rock burst during mining for gold was mainly concentrated in stressed fault / fracture zones and rocks with high E - modulus like gneisses , granites and ...
Page 206
... rock are present at a shallow depth of 1-3 m for pier 2 , 3 and 4. At pier no . 5 , where no exploration was carried out , rock can be expected at 7-8 m depth . The shears dip 30 ° , 45 ° and sub - vertical and joints are few in fresh ...
... rock are present at a shallow depth of 1-3 m for pier 2 , 3 and 4. At pier no . 5 , where no exploration was carried out , rock can be expected at 7-8 m depth . The shears dip 30 ° , 45 ° and sub - vertical and joints are few in fresh ...
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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