modern techniques for advance survey.ppt

modern techniques for advance survey

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