(1. School of Civi1 Engineering，Southwest Jiaotong University，Chengdu，Sichuan 610031，China； 2. School of Environment and Resources，Southwest University of Science and Technology，Mianyang，Sichuan 621010，China； 3. School of Environmental Science and Engineering，Southwest Jiaotong University，Chengdu，Sichuan 610031，China)
Abstract：Taking one-hole bench blasting as prototype，the blasting experiment of concrete models with a weak intercalation is carried out. The motion state of intercalation in blasting process can be observed using high-speed digital camera，and the motion characteristics of intercalation and variation laws under the conditions of different charges，moisture contents and the minimum burdens are analyzed. The research results show that the clear motion images of intercalation more than 2–4 cm away from blast-hole center can be obtained by high-speed digital camera，which confirms the pushing action of blasting upon the weak intercalation adjacent to blast-hole；the maximum motion velocity of intercalation in concrete model blasting can reach 450 m/s；and with the increase of the distance from the blast-hole center，the motion velocity linearly decreases approximately and its decrease range is mainly affected by the moisture content and charge；the motion velocity of intercalation and the maximum motion distance increase with the increase of charge，moisture contents and the minimum burden；moreover，the charge plays an important role in the final motion distance of intercalation.
张继春，肖正学，郑爽英，郭学彬，欧阳吉，肖定军. 含软弱夹层岩体爆破的夹层土运动特征试验研究[J]. 岩石力学与工程学报, 2009, 28(08): 1697-1703.
ZHANG Jichun1，XIAO Zhengxue2，ZHENG Shuangying3，GUO Xuebin2，OUYANG Ji1，XIAO Dingjun2. EXPERIMENTAL STUDY OF MOTION CHARACTERISTICS OF WEAK INTERCALATION IN ROCK MASS BLASTING. , 2009, 28(08): 1697-1703.
