BASANIA HEP_PFR - Ministry of Power

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uS'kuy gkbMªksbySfDVªd ikoj dkjiksjs'ku fyñ SEISMICITY Preliminary Feasibility Report Basania HE Project 3 X 30 MW The area around the project site falls in Central Indian Tectonic Zone. Proterozoic fold belts represented by Sausar, Sakoli & Nandgaon Group of rocks are exposed in the southern part. The folded volcano-sedimentary pile in intracratonic abortive rifts mainly crops out in the southern cover & along the narrow belt in the northern part. The Deccan trap covers a vast tract and younger anorogenic acid event is confined only in southern part. The Quaternary alluvial fill shows considerable development along Narmada intracratonic graben. The Central Indian Tectonic Zone (CITZ) in the middle constitutes major structural discontinuities. This zone is delineated by Son Narmada North Faullt (SNNF) in the north & Central Indian Shear (CIS) in south. The intervening area is marked by several sub-parallel ENE trending discontinuities namely Son- Narmada South Fault (SNSF), Tapti Norht fault, Govilgarh Fault and Tan Shear. The SONATA lineament zone, which is bound by SNNF & SNSF comprises northern component of CITZ and is known to be episodically active since Archean times. Although SNNF has not witnessed any major Phanerozoic reactivation. The SNSF, in contrast exhibists evidence of reactivation well into Phanerozoic. The raised / dissected Quaternary alluvial fill pile along the southern fringe of Narmada valley indicate neotectonic acitivity along SNSF. Seismcity is sparce in this area with a few earthquakes occurring with in the CITZ. Ten seismic events have been recorded / interpreted in the area between 1846 & 1997. The Ms of the events varies between 4.0 and 5.5. On 22 nd May 1997 a damaging earthquake (Mb = 6.0) occurred at Jabalpur. Maximum intensity observed was VIII on MSK scale. Five aftershocks with Mb >= 3.0 were recorded between 26.05.97 and 15.07.97. Keeping in view the seismicity and location of area in zone II/III as per map of India showing seismic zone (IS 1893 (Part I) : 2002) it is suggested that suitable seismic coefficient commensurating with the seismic status of the area be incorporated in design of various project components. NH/CON/229 20 01/2004
uS'kuy gkbMªksbySfDVªd ikoj dkjiksjs'ku fyñ Preliminary Feasibility Report Basania HE Project 3 X 30 MW Site specific seismic geology data from India Meteorological Department has been appended as Appendix – V. This data may be useful while arriving at site specific seismic design parameters during preparation of DPR. CONSTRUCTION MATERIAL SURVEY There will be no difficulty in getting the required quantities of the various construction materials like sand shingles & stones. Sand is available in river bed itself. Stones are available at Bazanighati near dam site. Suitable soils for earthen work are available nearby with in a lead of 3 Km. Geological Plan of the area is enclosed as Plate 4.1. NH/CON/229 21 01/2004
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STATEMENT SHOWING IDC CALCULATION A
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BASANIA H. E. PROJECT, M. P. (3 X 3
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S.No. Item Particulars Qty Rate Amo
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MW uS'kuy gkbMªksbySfDVªd ikoj dk
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BED LEVEL IN FEET 3600 1600 1200 40
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23°0` 22°15` 22°0` 80°15` 23°1
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132KV BUS1 BUS PT-1 132kV BUS-II BU
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also match with details of equipmen
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BASANIA HEP_PFR - Ministry of Power

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