Experimental study on stemming effect in rock blasting  

作　　者：Luo Yong Qi Qi 

机构地区：[1]National Engineering Research Center for Coal Gas Control,Huainan Mining （Group） Co. , Ltd. , Huainan, Anhui 232001, China [2]Department of Mechanical and Electric Engineering,Huainan Union University, Huainan, Anhui 232001, China

出　　处：《Engineering Sciences》2010年第4期42-46,96,共6页中国工程科学（英文版）

摘　　要：Based on the blasting theory and stress wave theory, stemming mechanism and movement of stemmed material in rock blasting were analyzed and the calculation expression of stemming lengths was deduced. The blasting experiment with different stemming lengths was carried out and the results show that the theoretical stemming length, which is 0.73 ~ 0.8 time of burden, is in the range of the experiential length, which is O. 63 - O. 88 time of burden. The blasting results of field experiments with theoretical stemming length are satisfactory, which shows the theoretical derivation and analysis are correct and reliable. The results will supply rock blasting with the theoretical gist of parameters design.

关 键 词：blasting theory stress wave theory stemming length field experiment 

分 类 号：TD235.1[矿业工程—矿井建设] TP317[自动化与计算机技术—计算机软件与理论]