Records of the Geological Survey of India, Volume 104The Survey, 1972 - Earthquakes Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 138
... Tunnel Project : The head race tunnel from the Ichari end had progressed upto R. D. 1500 m . The tunnel was advancing through the phyllite , slate and quartzite members of the Chandpur Series which are folded into gentle open synclines ...
... Tunnel Project : The head race tunnel from the Ichari end had progressed upto R. D. 1500 m . The tunnel was advancing through the phyllite , slate and quartzite members of the Chandpur Series which are folded into gentle open synclines ...
Page 91
... tunnel and 580 m . long penstocks and a power house . All the structures were completed by 1964 except the tunnel which was held up due to sudden flow of silt and sand that chocked the outlet portal and a chimny was formed effecting a ...
... tunnel and 580 m . long penstocks and a power house . All the structures were completed by 1964 except the tunnel which was held up due to sudden flow of silt and sand that chocked the outlet portal and a chimny was formed effecting a ...
Page 92
... tunnel started peeling off from the crown . The causes of the failures in the tunnels have been attributed to 1 ) schistosity and bedding cleavage 2 ) joints 3 ) shear planes 4 ) water seepage and 5 ) the blasting pattern adopted ...
... tunnel started peeling off from the crown . The causes of the failures in the tunnels have been attributed to 1 ) schistosity and bedding cleavage 2 ) joints 3 ) shear planes 4 ) water seepage and 5 ) the blasting pattern adopted ...
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Common terms and phrases
abutment alignment alluvial alluvium amphibolite Andhra Pradesh aquifers Assam bands basalt basin bauxite Bihar block boreholes carried chalcopyrite charnockite clay Coalfield construction Dam Project Deccan Trap deposits depth dips district Division dolerite dolomite drill holes dykes earth dam Engineering Geology excavation exploration fault folded foliation Formation foundation geochemical geohydrological Geol geological mapping Geological Survey Geologists Jr Geophysical Ghosh gneiss Gondwana grade granite gneiss graphite groundwater grouting Gujarat hard rock Hydel Project indicated investigation irrigation joints Laboratory laterite limestone located logging Madhya Pradesh metres million tonnes mineralisation minerals Mysore occur Orissa pegmatite phosphorite phyllites power house pyrite quartz veins quartzite Rajasthan Region reservoir rock types S/Shri samples sand sandstone scale schist seams sediments shales shear zones Shri Singh Siwaliks spillway strike length structure studies Survey of India taluk thick tion trending tubewells tunnel Udaipur district upto Uttar Pradesh valley varies Vindhyan weathered West Bengal