Records of the Geological Survey of India, Volume 123, Part 1The Survey, 2002 - 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 128
... tunnel - 1 & II , construction of a cut and cover duct has been suggested . In tunnel - III , top heading and benching method of tun- nelling has been recommended because of the poor rock quality along the tunnel grade . D. N. ...
... tunnel - 1 & II , construction of a cut and cover duct has been suggested . In tunnel - III , top heading and benching method of tun- nelling has been recommended because of the poor rock quality along the tunnel grade . D. N. ...
Page 199
... tunnel is to be located across the Bhitri saddle in Deoland hog's back . Geotechnical mapp- ing of 20,000 sq m area ( 1 : 500 ) and logging of an aggregate depth of 18 m from trial pits reveal that the proposed dam site is occupied by ...
... tunnel is to be located across the Bhitri saddle in Deoland hog's back . Geotechnical mapp- ing of 20,000 sq m area ( 1 : 500 ) and logging of an aggregate depth of 18 m from trial pits reveal that the proposed dam site is occupied by ...
Page 399
... tunnel bay based on ' Q ' system . As per ' Q ' values , 58 % tunnel falls in unsupported category and rest required supports . Mehrotra and Sharda , have concluded that slide at RD5710m along the hydel channel is a rock slide ...
... tunnel bay based on ' Q ' system . As per ' Q ' values , 58 % tunnel falls in unsupported category and rest required supports . Mehrotra and Sharda , have concluded that slide at RD5710m along the hydel channel is a rock slide ...
Contents
CENTRAL HEADQUARTERS | 1 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 46 |
COAL WING | 72 |
Copyright | |
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alignment amphibolite analysed Andhra Pradesh anomaly assess associated bands basalt basaltic flows basin Bihar Bihar Code block boreholes clay coal Coalfield comprises covered cut-off trench dam axis Deccan Trap delineated deposits depth Director district Code DIVISION Headquarters dolerite drilling dykes earth dam excavation exploration exposed field season Formation foundation geochemical geological mapping GEOLOGY DIVISION geophysical geotechnical investigation gneiss gold Gondwana grained granite granite gneiss gravity grey Group holes indicated intrusive irrigation limestone located magnetic Maharashtra migmatite mineral mineralisation Nagpur nala occur Orissa Orissa Code pegmatite phyllite porphyritic power house proposed quartz quartz veins quartzite Quaternary Raniganj Regional reservoir river rock types sand sandstone scale schist schist belt seams sediments shale shear zone Singhbhum soil spillway sq km sq km area stage geotechnical investigation strike length suggested sulphide Supergroup surface surveys thickness tion Toposheet traverses trending tunnel upto West Bengal