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宝成二线阳（平关）──上（西坝）段安乐河隧道施工中应用光面爆破技术，取得了较理想的效果。本文着重介绍该隧道光爆施工有关情况。
Baocheng second line Yang (Pingguan) ─ ─ (West Dam) Anle River tunnel construction smooth blasting technology, and achieved satisfactory results. This article focuses on the construction of the tunnel light burst situation.