Records of the Geological Survey of India, Volume 135, Parts 4-5Government of India, 2000 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 129
... rock . For a span of 6.5 m excavated diameter of the tunnel , the supports indicated were rock bolting and fibre reinforced shotcrete . Rock Mass Ratings ( RMR ) for good zone was estimated as 77 , falling in the category of II- Good ...
... rock . For a span of 6.5 m excavated diameter of the tunnel , the supports indicated were rock bolting and fibre reinforced shotcrete . Rock Mass Ratings ( RMR ) for good zone was estimated as 77 , falling in the category of II- Good ...
Page 137
... rock in a grid pattern . Shotcrete has to be applied over the rock surface . Stream course present at the higher level needs to be diverted away from the affected zone . Steep slopes are present near the Om turning , above the tourist ...
... rock in a grid pattern . Shotcrete has to be applied over the rock surface . Stream course present at the higher level needs to be diverted away from the affected zone . Steep slopes are present near the Om turning , above the tourist ...
Page 147
... rock - mass is seamy to fractured in the area between Ch 27 m and Ch 44 m and is blocky to massive in rest of the area . Loose and detached rock blocks with wide opened up joints are observed mainly in the ledge between the oil drain ...
... rock - mass is seamy to fractured in the area between Ch 27 m and Ch 44 m and is blocky to massive in rest of the area . Loose and detached rock blocks with wide opened up joints are observed mainly in the ledge between the oil drain ...
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alignment alluvium amphibolite Andhra Pradesh Arunachal Pradesh Assam bands Basin bedrock biotite block boreholes Brahmaputra carried charnockite Chitradurga clay contour Cuddapah depth district drilled dykes east eastern excavation fault flood plain folds foliation Formation foundation fractures geoenvironmental geological mapping Geotechnical Investigation gneiss gold mineralisation gold values granite granite gneiss granulite gravity grey ground water Group hills indicated joints Karnataka Kerala khondalite kimberlite Krishna Kurnool lamproite limestone lineament located magnetic Meghalaya metabasalt migmatite mineral Mizoram NE-SW NW-SE occur pegmatite Peninsular Gneissic Complex penstock phyllite pink powerhouse Project proposed quartz quartz veins quartzite Quaternary regional river rock samples sand sandstone scale schist belt Serchhip shale shear zone slope soil southern Specialised Thematic Mapping sq km STAGE GEOTECHNICAL INVESTIGATION stream sediment strike length structural studies sulphide surface surveys Tamil Nadu terrain thick toposheets traversed trench trending tunnel valley village weathered width के