Preliminary Analysis on the Broken Rock Zone of a Deep Mine Tunnel under the Influence of Moving Load Created by Blasting

摘要：

Based on the analysis of the mechanical characteristics of wall rock during deep mine tunneling, it is demonstrated that the failure mode of the deep well wall rock appears to change from brittle to ductile due to blasting. The radius of the broken rock zone is calculated on the basis of broken rock theory. The mechanical model is created to describe the influence of blasting with cylindrical charges on the broken rock zone, and the formula of the dynamic broken rock zone radius is derived. The above achievements provide a foundation for the design of supports in deep well tunneling by blasting.

关键词： dynamic blasting load dynamic broken rock zone deep mine tunnel vibration

作者: XU Ying SUN Yong FU Jugen ZONG Qi

作者单位: Anhui University of Science and Technology, Huainan, Anhui Province, China Key Laboratory of Mine Sa Anhui University of Science and Technology, Huainan, Anhui Province, China

会议类型: 国际会议

会议名称: The Second Asian-Pacific Symposium on Blasting Techniques(第二届亚太地区爆破技术研讨会)

会议地点: 大连

会议语种:英文

页码: 138-141

在线出版日期: 2009-07-01（万方平台首次上网日期，不代表论文的发表时间）