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Authors
Affiliations
1 Guizhou Power Grid Co. Ltd., Branch Transmission Operation Maintenance, Guiyang 550 002, CN
2 Electric Power Design and Research Institute, Guiyang 550 002, CN
Source
Journal of Mines, Metals and Fuels, Vol 65, No 10 (2017), Pagination: 531-533
Abstract
The iron tower of transmission lines and its foundation are often confronted with settlement, inclination, displacement, distortion, etc. caused by surface movement and deformation. The double corridor project takes advantage of the layout of working surface, basically the regular time and the slowness of surface movement and deformation. Combined with geological information and mining conditions, the project chooses to construct new corridors in stable goafs which have been moved and deformed by coal mining. Through detecting tower deformation and mastering its trend, the new corridor will be built as soon as the deformation degree reaches the early warning value (the deflection of tangent tower reaches 0.3% while that of angle tower reaches 0.7%). The old corridor is then transformed into a double-corridor project. This project provides new ideas for transmission lines construction in mining areas by solving the problems in rerouting and high cost.
Keywords
Coal Mining Area, Electric Transmission Lines, Geological Defects, Management, Double Corridor Project.
