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隧道光面爆破施工工艺取得突破
2017-08-09 09:36:10 中国青年网
本报讯 (记者刘静)近日,隧道光面爆破施工技术现场观摩活动在蒙华铁路土建31标段举行。“打眼放炮”是多年来常用的一种隧道开挖施工法,爆破过后岩石支离破碎,施工人员再继续调整、开挖。而光面爆破是指在隧道开挖施工中,通过调整爆破参数和施工方法,分区分段实施“微差爆破”。爆破后形成的轮廓线符合设计要求、开挖面平整规则的一种高精度爆破控制技术。隧道施工专家表示,这标志着我国隧道光面爆破施工管理工艺取得突破。
据中国中铁北京工程局蒙华铁路项目经理陈庆怀介绍,光面爆破可以在强化施工安全的同时,减少超挖、欠挖,有效提高工程质量和施工进度,降低施工成本。同时,根据光面爆破施工要求,明确了控制光面爆破的施工方法、程序、标准等。
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