modern techniques for advance survey.ppt
- 1. ROUTE OPTIMIZATION & TOWER SPOTTING OF TRANSMISSION LINE USING REMOTE SENSING & GIS TECHNIQUES
- 2. Objective Base Map Creation using IRS LISS III & PAN merged/ LISS IV Satellite images & SOI sheets Preliminary Alternative Route identification with detail report & BOQ Digital Terrain Modeling (DTM) using GIS on Hilly area Fly-thru generation along the selected route on Hilly area
- 3. Approx B-line End Coordinates Angle & Suspension Tower Design Inputs Inputs from Client: Other Sources: SOI Topo sheets Satellite Imagery Proposed plans for Future developments (Railway, National Highways, Transmission Lines, Industrial area, city development, Airport, Forest areas etc.) along the proposed corridor
- 4. Procurement of SOI Toposheets Acquisition of Satellite Data (LISS & PAN)/LISS IV Scanning Geo-referencing on UTM Geo-referencing Layer Specification Base Map Preparation Merging/Processing of LISS & PAN data Updation of Base Map Marking of 3 Alternative Route alignments Walkover Survey Comparison Reports & Selection of Proposed Route for Detailed Survey Methodology / Work Process
- 5. Import Satellite Raw LISS III & Pan data Geometric correction (UTM projection) on the bases of ground control points DIP Fuse LISS III+Pan Coordinates transformation from satellite image to scanned Toposheets Base map preparation Digitize constant layers from Toposheet Update base map from real time data (Variable layers) Mark 3 alternatives on the bases of specifications along the “B” line Prepare the comparison report for all three alternatives Prepare fly-thru along the best proposed route Preliminary Submission Detail survey using GPS, capture all feature data in coordinates in their feature code Approved Route Geotechnical Investigation Collect Soil Sample as per Specification (7 mts borehole normal area, 40 mts borehole river crossing ) Update base map with alignment from detail survey data Final Route Submission Prepare conductor, Tower design in Power Line software using tower spotting parameters Input detail survey data for Profiling foundation Classification (including cutting, Benching, revetment ) Tower spotting data Submission Bill Of Quantities, Detailed all reports as required as per specification and work Receive Input-data Approval On Final Delivery Work Process Flow Chart
- 6. Deliverables Preliminary Approval Update Digitize base map with 3 alternatives Digital Terrain Model Detail Draft Report Final Approval Update digitize base map with survey route 3 alternatives Survey report & Annexure BOQ