工程爆破

2009, v.15;No.58(04) 38-40

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复杂环境下石方控制爆破
CONTROLLED STONEWORK BLASTING IN COMPLEX ENVIRONMENT

杨勇;骆守林;薛永利;
YANG Yong,LUO Shou-lin,XUE Yong-li(Nuclear Nanjing Construction Group Co.,Ltd.,Nanjing 210003,China)

摘要(Abstract):

秦山三核乏燃料干式贮存设施场坪工程中,在复杂环境下,采用台阶爆破、延时爆破形式、预裂爆破的控制爆破技术方案,对爆区的三种类型建筑物,按不同的安全振速和振动加速度值,严格控制最大段药量,确保了建筑物的安全。通过合理选取爆破参数和采取爆区的覆盖防护措施控制爆破飞石,安全地实现了72万m3、边坡预裂面积3万m2的石方爆破开挖。
A field leveling project of spent fuel dry storage facility of Qinshan 3rd Nuclear Power Plant was to be carried out in complex environment,which led to the adoption of controlled millisecond delay bench blasting and presplitting technology.According to different safety vibration and vibrating acceleration values of the three types building in the blasting area,the maximum segment explosive quantity was strictly controlled to ensure the safety of the building.And moreover,reasonable blasting parameters and the protection covering the blasting area to control the flyrocks were determined.The excavation saw a safety achievement with an excavation of 720 thousands cubic meters and 30 thousands square meters of slope presplitting.

关键词(KeyWords): 复杂环境;石方开挖;控制爆破;爆破振动;爆破飞石
Complex environment;Rock excavation;Controlled blasting;Blasting vibration;Blasting flyrocks

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作者(Author): 杨勇;骆守林;薛永利;
YANG Yong,LUO Shou-lin,XUE Yong-li(Nuclear Nanjing Construction Group Co.,Ltd.,Nanjing 210003,China)

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