高压供电线路旁基础石方开挖爆破技术

Blasting technology for foundation rock excavation by high-voltage power line

桂中治旱乐滩水库引水灌区一期工程甘香明渠渠道沿线有2组高压线(110 kV)临空跨过并与明渠斜交,由于高压线涉及用电范围较广,故明渠石方开挖安全保护重点是控制爆破作业对高压线和塔基的影响。小台阶浅孔弱松动爆破法及静态爆破法相结合的高压线区石方爆破开挖施工方法。

Ganxiang open canal,one of the components of the 1st-stage work of Middle Guangxi Drought Relief Project to transfer water from Letan Reservoir,will cross two 110kV power lines for large supply area.The influence of rock excavation blasting on power lines and tower foundation must be controlled.An introduction was made on the construction method of rock blasting excavation at the locations nearby high-voltage power lines,combing small step shallow hole weak loosening blasting with static blasting.