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The Research and Application of Medium-length Hole Blasting Network Optimization Design in Heavy Section of Stone Head

Hou Chuanyi 1 Wang Daoyang 2 Shen Xiaxia 2 Hu Xin 2 Zhang Kai 2 Liao Hai 2 1 Anhui Leiming Science and Chemistry Co., Ltd., Huaibei Anhui, 235042 2 Anhui University of Science and Technology, Huainan Anhui, 232001  
In order to prevent the phenomenon that heavy section of mine stone head losing cannon during excavation blasting, the theoretical calculation and analysis about current through each electric detonators in series blasting network, parallel blasting network, two series one parallel blasting network and four parallel one series blasting network are respectively presented and the designs of blasting network technique are optimized, which have been used in stone head excavation blasting engineering. The results show that four parallel one series blasting network can effectively prevent the occurrence of losing cannon, which significantly improves the reliability of heavy section of stone head medium-length hole blasting detonating for once network.
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