• BLASTING
  • Vol. 41, Issue 4, 174 (2024)
QIN Shao-bing1、2, XU Zi-dong3, WANG Dao-yin4, QIN Zi-hang1、*, and GE Yong-xiang2
Author Affiliations
  • 1Wuhan Safety and Environmental Protection Institute Co., LTD., Sinosteel, Wuhan 430081, China
  • 2School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
  • 3Fujian Yishun Construction Engineering Co., LTD., Quanzhou 362200, China
  • 4Yichang Gem Mountain Mining Co., LTD., Yichang 443145, China
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    DOI: 10.3963/j.issn.1001-487x.2024.04.022 Cite this Article
    QIN Shao-bing, XU Zi-dong, WANG Dao-yin, QIN Zi-hang, GE Yong-xiang. Experimental Study on Fusion Delay Detonation Network in Small Section Excavation[J]. BLASTING, 2024, 41(4): 174 Copy Citation Text show less

    Abstract

    The construction of a blasting network is challenging, with high risks and costs associated with blasting equipment. Considering the geological structure, physical and mechanical properties of the excavation target, and the detonation characteristics of the detonating cable, a delayed detonation network was designed to combine a digital electronic detonator and a detonating cord. This design replaced the digital electronic detonator with the detonating cord in auxiliary and peripheral holes within the same section. In contrast, a single digital electronic detonator was used to initiate detonation to reduce the networking complexity and improve the overall reliability of the network. Field tests conducted at Guangshan iron mine and Gemstone phosphate mine verified the applicability of this method in different mineral environments. The results show that the fusion delay detonation network can significantly reduce detonation equipment costs, simplify initiation network construction, improve cutting effectiveness, and reduce safety risks during excavating small-section roadways in iron mines. However, during the underground phosphate rock test, the unique geological structure and the properties of phosphate rock prevented the designed network from achieving the expected results, indicating a need for further research.
    QIN Shao-bing, XU Zi-dong, WANG Dao-yin, QIN Zi-hang, GE Yong-xiang. Experimental Study on Fusion Delay Detonation Network in Small Section Excavation[J]. BLASTING, 2024, 41(4): 174
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