Back to Case ArchivesEX-01 QINGYUAN

Qingyuan District, Guangdong Province, CN (23.7018° N, 113.0560° E)

Dual-column viaduct pier spacing (30m span) + fenglin karst cone profile eliminates Guangxi Guilin (steeper spire ratio) and locks to G107 Qingyuan corridor.

WGS-84 Decimal

23.7018, 113.056

UTM Grid Zone

49Q 709540E 2623110N

Error Radius & Lock

±1.4 km (96.4%)

Elevation & Solar

118m ASL · 142.6°

Interactive WGS-84 Pin & Camera Viewing Cone

4-Stage Deduction Chain

Stage 01

EXIF & Container Audit

Stripped by social compression; fallback to optical sweep

Stage 02

Subtropical Karst Transition

22.5°N - 24.5°N South China limestone belt

Stage 03

JT/T Highway Pier Standard

Pre-stressed concrete box girder + green anti-glare

Stage 04

96.4% Consensus Lock

Cross-verified against OpenStreetMap viaduct nodes

Sequential Forensic Evidence Plates (6 Plates)

Verify on OpenStreetMap

Plate #01Verified

Original field photograph (EXIF stripped)

Plate #02Verified

Viaduct pier spacing & box-girder optical ruler measurement

Plate #03Verified

South China karst transition belt spatial sweep

Plate #04Verified

DEM horizon ridge-line top-3 candidate alignment

Plate #05Verified

Camera viewing ray intersection across highway piers

Plate #06Verified

Verified satellite & ground geometry consensus lock