Kinematic Characteristics of Movement of the Explosive Cavity Wall in Different Rocks
Based on examination of the first stage of the explosive explosion in the rock massif an expression was proposed for increasing mass of rocks,squeezed out of the explosive cavity.Using the theorem of momentum change of the body with variable mass the dependence was determined of velocity changing of the explosive cavity walls movement from its radius.Giving a certain value of relative movement of the cavity walls,one can easily calculate their velocity during corresponding period according to this dependence.Also this dependence allows to find the expansion time of the explosive cavity during the period between its adjacent positions.According to the proposed formulas the velocities and expansion time were defined of the explosive cavity in rocks with different physical and mechanical properties by using explosives with the different physical-chemical characteristics.
explosive explosion explosive cavity velocity of the cavity walls movement time of the cavity expansion
B.R.Rakishev Z.B.Rakisheva
K.I.Satpaev KazNTU Almaty,Republic of Kazakhstan al-Farabi KazNU Almaty,Republic of Kazakhstan
国际会议
The 4th Asian-Pacific Symposium on Blasting Techniques(第四届亚洲太平洋地区爆破技术研讨会)
深圳
英文
180-184
2014-11-01（万方平台首次上网日期，不代表论文的发表时间）