balkan oil&gas summit - athens 2012

8/12/2019 Balkan Oil&GAS Summit - Athens 2012

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COMBINED GEODESICAL, TOPOGRAPHICAL,PHOTOGRAMMETRY and GIS WORKS

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Use of 2D and 3D Linear Referencing Systems in pipeline surveys eng. Cristian GABORGAUSS srl – Timișoara ROMÂNIA



Topography, Geodesy, Cadastre, GIS

Topographical & Photogrammetrical Surveys

ROLE of Surveying – to accurately determine the three dimensionalpositions of points needed in any/all phases of a project lifecycle.

Methods and technologies currently employed – Establishment of the Control Survey Network

– Topographical surveys

– Aerial/Satellite Photogrammetry

– LiDAR data gathering

– Underground surveys (passive/active detection)

– Bathimetry

– GIS - data storage, integration, representation, processing etc.

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http://www.gauss.ro/




Survey Control Network

“Give me a fixed point place to stand on, and I will move the

Earth.”

Archimedes - 3rd

century B.C.

www.gauss.ro 327th September, 2012






Aerial Photogrammetry

Equipment Plane:

– Diamond DA42 MPP twin engine aircraft

Digital aerial camera

– IGI DigiCam (38 Mpixels)

– Microsoft Vexcel – Ultracam Lp (92 Mpixels)

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LiDAR scanner

RIEGL LMS-S560 Airborne Laser Scanner System – Densities higher than 1 point per sqm for

flying heights arround 1,000 m

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Combined Photogrammetric/Lidar flight

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Ground Penetrating Radar

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Topography, Geodesy, Cadastre, GIS Deliverables

27th September, 2012 www.gauss.ro 8

- Ground control network- Point coordinates inventory- Burying depths for existing pipelines- Topographical and cadastral maps- DSM/DTM and derivate data (contours, watersheds, slope maps,volumes computations etc.)- Longitudinal/transversal profiles- Alignment sheets

- GIS







Established Control Network for TAU Valea Mărului(41 points)





Topography, Geodesy, Cadastre, GIS Orthophotos

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Topography, Geodesy, Cadastre, GIS Lidar cloud points







Bathymetry for Jiu river

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Perspective views – Cerna crossing

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Route Maps

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Alignment sheets

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Cadastral Route Maps







Topographical maps

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Cadastral mapping

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Linear Referencing Systems

Linear referencing (also called linear reference system or linearreferencing system or LRS), is a reference system in which thelocations of features are identified by a relative measure along alinear element, for example a milestone along a road. Each featureis located by either a point (known as a "milepoint") or a line("segment"). The system is designed so that if a segment of a routeis changed only those milepoints on the changed segment need tobe updated.

Linear referencing is suitable for management of data related to

linear features like roads, railways, oil and gas transmissionpipelines, power and data transmission lines, and rivers.







Where?

Linear elements mapping created the need to implement LRS


26 5'51.58"E

44 53'14.78"N Km 46+360






Advantages of using LRS

Kp 10 20 30 40 50 60 70 80 90 100

Classlocation

1 2 3 4

Protected

areas SCI Timi SPA Vinga

Capitalrepair

2015 2020 2017 2020

Incidents * * *


- locations are generally more intuitive than locations specified withtraditional coordinates- Easy data overlay, LRS allows attribute data from multiple sourcesto be associated with the network

- On the fly transformation of route measures from one revision toanother






LRS data exchange via tables


kp rev E start kp rev E end RUTA NOTE

2000 9000 D NU SE SCHIMBA

17200 17300 WP

42000 51500 D NU SE SCHIMBA

71500 72100 E

99500 99750 E

116200 116350 E

135350 137620 E

144730 145220 E

147650 148150 E

149600 150870 D NU SE SCHIMBA153610 157260 B (ELLIMINATED ip 135, 136, 137)

157260 157470 E (elliminated IP 139)

157470 15840 WP (elliminated IP 141)

160100 161250 E

161250 161450 D

162200 162600 E (IP 154, 156 elliminated)

163450 163700 E IP164-IP165- KILOMETRAREA GRESITA !!!

165300 172700 E (Cazanesti VOR)172700 174150 NEW ROUTE (elliminated Ips)

178760 182640 E

182990 184460 E DE VERIFICAT INTERFERENTA CU TRANSELECTRICA

185350 185720 WP (elliminated ip 201, 202)

187300 187420 E (elliminated ip 210, 211, 212)

187700 188100 NEW ROUTE (elliminated Ips)

188100 189160 E

189960 190380 E DE VERIFICAT DACA SE POATE MERGE PINA IN IP 235

190600 191570 E- MODIFICATA ATENTIE LA CIMITIR






LRS implementation in ESRI ArcMap







3D LRS Instead of using the planar distance as the measure value of the LRS, by

projecting the 2D LRS to the terrain model we can calculate the slope length ofthe LRS.

LRS[2D] + DTM -> LRS[3D]

469.367 km [2D] -> 471.709 km [3D]

Difference 3D from 2D = 2.341 km (0.50%)







Thank you for your attention!



balkan oil&gas summit - athens 2012

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