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首页> 外文会议>Annual Conference on Explosives and Blasting Technique vol.1; 20050206-09; Orlando,FL(US) >Civil Tunnelling with Electronic Blasting Systems - Early Experience in Korea
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Civil Tunnelling with Electronic Blasting Systems - Early Experience in Korea

机译：带电子爆破系统的民用隧道-韩国的早期经验

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To meet the needs of South Korea''s rapidly expanding economy, a large number of infrastructure projects are under way to improve transportation efficiency within the nation. These projects include high-speed rail links between major population centres and improvements to the road network. Being densely populated and geographically mountainous, infrastructure development in Korea requires a significant amount of tunnelling. Owing to the predominantly hard granitic nature of rock, drill and blast is the preferred method of tunnel advance. The Korean tunneller, however, faces the same pressures as those of his international counterpart in that both cost and production targets need to be achieved while meeting expectations of both community and regulator. The growing acceptance of electronic blasting systems now presents a number of opportunities to the civil tunnelling sector. Conventional initiation systems used for full face firing of large tunnels are hampered by limitation of delay periods and their firing accuracy. The availability of fully programmable and accurate delay systems now open a number of possibilities to the civil tunneller, opposite advance rate, excavation efficiency, perimeter control and environmental conformance. This paper details a series of blasts undertaken at the Kang Chon 1 Tunnel on the 7th Zone of the Kyung - Chun Railway Line Construction. A blast measurement program was undertaken to firstly benchmark two conventional blasts followed by three blasts fired with the i-kon™ Electronic Blasting System (EBS). Key parameters were measured including rock mass evaluation, tunnel advance, blast fragmentation, perimeter control and vibration. The paper concludes with indications of improvements to perimeter control and a higher confidence level in vibration predication. It then points to further possibilities for electronic blasting systems in civil tunnel applications.
机译：为了满足韩国快速发展的经济的需求，正在进行大量基础设施项目，以提高国内的运输效率。这些项目包括主要人口中心之间的高速铁路连接以及道路网络的改善。韩国人口稠密，地势多山，因此基础设施建设需要大量的隧道建设。由于岩石主要具有坚硬的花岗岩性质，因此钻探和爆破是隧道掘进的首选方法。但是，这名韩国隧道工人面临着与国际隧道工人相同的压力，因为既要实现成本和生产目标，又要满足社区和监管机构的期望。电子爆破系统的日益普及现在为民用隧道业提供了许多机会。用于大型隧道全面射击的常规起爆系统受到延迟时间及其射击精度的限制。现在，完全可编程和精确的延迟系统的可用性为民用隧道掘进机带来了许多可能性，它们具有相反的前进速度，开挖效率，周长控制和环境一致性。本文详细介绍了在庆津铁路线建设第七区的康春一号隧道发生的一系列爆炸事件。进行了爆炸测量程序，以首先对两个常规爆炸进行基准测试，然后使用i-kon™电子爆破系统（EBS）发射三个爆炸。测量了关键参数，包括岩体评估，隧道前进，爆炸碎片，周长控制和振动。本文以改善周界控制和提高振动预测的置信度为标志。然后，它指出了在民用隧道应用中电子爆破系统的进一步可能性。

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