Aimed at steep mountains with high altitude and heavy icing

the transmission line has some special problems

such as heavy load of earth wire

steep terrain

large size of tower

lack of tower legs

large amount of foundation project quantity and low efficiency of conventional construction methods. Combined with the rich experiences in engineering design

and from the comprehensive consideration of economy

reliability

feasibility and environmental protection in the full cycle

the structure innovation measures of transmission line are put forward

including three kinds of steel to extend the leg

three kinds of new tower type and two kinds of new foundation type.