工程爆破

2015, v.21(02) 18-20

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复杂环境深孔控制爆破技术
CONTROLLED BLASTING TECHNOLOGY OF DEEP HOLES UNDER COMPLICATED ENVIRONMENT

杨玉银;刘少辉;
YANG Yu-yin;LIU Shao-hui;Sinohydro Bureau 5 Co.,Ltd.;

摘要(Abstract):

为了保证位于复杂环境下从江航电枢纽工程坝址及厂房基础开挖的顺利进行,对被保护对象进行了爆破安全分析、评估,划定重点爆破控制区域,并根据计算确定了各区域单响药量。通过调整爆破方向、增大炮孔填塞长度、采取逐孔起爆技术控制飞石,并结合合理的安全措施,最终取得了较好的爆破效果。爆破结果表明:通过爆破安全分析和评估确定的爆破参数、制定的安全措施是合理有效的。
To ensure excavation of dam site and powerhouse foundation of Congjiang Navigation and Hydropower Complex Project smoothly under complicated environment,blasting safety analysis and assessment were made and key blasting control areas were confirmed for protected objects.Charge amount per delay interval of each area were well chosen by calculation.By adjusting blasting direction,adding the length of blast hole filling properly,appling hole-by-hole ignition technique to control the flying stone,and combined with reasonable safety measures,preferable blasting effect was finally achieved.Blasting results showed that blasting parameters and safety measures made through the methods of blasting safety analysis and assessment were rational and effective.

关键词(KeyWords): 复杂环境;深孔控制爆破;爆破开挖;安全分析
Complicated environment;Controlled blasting of deep holes;Blasting excavaticn;Safety analysis

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作者(Author): 杨玉银;刘少辉;
YANG Yu-yin;LIU Shao-hui;Sinohydro Bureau 5 Co.,Ltd.;

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