Research on roadway supporting effect of different bolt parameters under blasting dynamic load

摘要：

　　According to the roadway characteristics and physical properties of rock, calculation model of FLAC2D established,analyzes strain and stress distribution of roadway surrounding rock under static condition and dynamic load of blasting.The results show that, by blasting dynamic loads, stress of surrounding rock will be redistribute, cause displacement increased,and vertical displacement larger than lateral displacement;with the decrease of rock bolt spacing, stress and displacement of surrounding rock under blasting dynamic load decreases, and when the distance is less than a certain value, the influence of blasting dynamic load is smaller.Combined with the results of numerical analysis, gained reasonable supporting parameters,and applied to the engineering practice, has obtained good supporting effect.

关键词： roadway blasting dynamic load bolt supporting effect

作者: ZONG Qi WANG Hai-bo

作者单位: School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 23 School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 23

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 75-79

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）