Records of the Geological Survey of India, Volume 123, Parts 3-4Government of India, 1990 - 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 131
... suggested . In the tailrace tun- nel , it was suggested to continue support system upto RD 690 m owing to bed rock condition . Again , about 3 m stretch support is required at RD 653.5 m where a cavity has been formed due to overbreak ...
... suggested . In the tailrace tun- nel , it was suggested to continue support system upto RD 690 m owing to bed rock condition . Again , about 3 m stretch support is required at RD 653.5 m where a cavity has been formed due to overbreak ...
Page 132
... suggested to excavate the C.O.T. down to fresh rock in between RDS 1740m to 2100m which includes river bed also . This reach is the deepest part of the dam and fresh rock will be available at depths ranging from 5 m to 11.8 m . Borehole ...
... suggested to excavate the C.O.T. down to fresh rock in between RDS 1740m to 2100m which includes river bed also . This reach is the deepest part of the dam and fresh rock will be available at depths ranging from 5 m to 11.8 m . Borehole ...
Page 135
... suggested to grout the cut - off to a depth of 3m below the bed rock at an interval of 6m . If required , secondary holes were suggested at 3m interval after percolation study of test holes . In the boundery zone the depth of grout was ...
... suggested to grout the cut - off to a depth of 3m below the bed rock at an interval of 6m . If required , secondary holes were suggested at 3m interval after percolation study of test holes . In the boundery zone the depth of grout was ...
Contents
CONTENTS | 1 |
Quaternary geological and geomorphological mapping of the ChandanBadua | 7 |
Quaternary geological mapping in KosiGandak interfluve tract North Bihar | 13 |
Copyright | |
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alignment amphibolite anomaly anorthosite bands basin bed rock belt BIHAR BIHAR Code biotite block boreholes chromite clay CONSTRUCTION STAGE GEOTECHNICAL covered cut-off dam axis deposits depth Disang district drilling earth dam Engineering Geology Engineering Geology Division-IV excavation exposed EXTENDED ABSTRACTS field season folds foliation Formation foundation geochemical geological mapping Geology Division-II Ops geomorphological geophysical Geotechnical and Special GEOTECHNICAL INVESTIGATION gneiss gneissic Gondwana grained granite granite gneiss granitoid graphite grey grouting GSI Vol hill indicate irrigation khondalite lineaments located Meghalaya migmatites mineralisation minerals nala occur ORISSA ORISSA Code pegmatite phyllite plagioclase power house proposed Purulia Purulia district quartz veins quartzite Quaternary Regional Geology Division right bank samples sandstone scale schist sediments shale shear zone Shillong siltstone Singhbhum slope soil Special Investigation spillway sq km STAGE GEOTECHNICAL INVESTIGATION structure surface SURVEY OF INDIA thick toposheet traverse trending tunnel upto volcanic weathered West Bengal