共查询到13条相似文献,搜索用时 78 毫秒
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本文通过理论计算和实际分析表明,井下爆破空气冲击波对爆破网路有着较大的破坏作用,利用孔底起爆的方法,可有效地防止空气冲击波对爆破网路的破坏。这种方法已在西石门铁矿井下扇形孔爆破和束状孔的爆破中应用,并取得了良好的效果。 相似文献
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在工程爆破设计中,为确保大爆破安全、可靠的起爆,本文对起爆电源一定条件下,大爆破电力复式并串联起爆网路的支路数目确定提出了一种优化方法。 相似文献
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闭环式电起爆网路参数的计算方法 总被引:1,自引:0,他引:1
文中详细介绍了大型瓣环式电起爆网路的参数计算问题,按照Kirchhoff定律及大型闭环式电卢爆网路的特点,给出了电参数方程组及其求妥的数学模型。并通过分析方程组的特点,采用FORTRAN语言设计开发了计算程序,方程组的构造与计算均由计算机自动完成,较好地解决了闭环式网路参数计算的难题; 相似文献
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结合案例,按照上石方工程爆破中无限分段理念,采用改进后的起爆网路,提高爆破网路传爆的可靠性,较好地解决爆破施工中的难题。使爆破开挖工程扩大规模,相应地减少爆破次数,可以更合理地安排爆破作业时间,降低爆破安全风险。此项技术的应用,具有明显的经济效益及社会效益。 相似文献
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岩石的溶槽、沟槽等会给岩石的破碎质量带来不利的影响,本文介绍了在这种地质条件下,为了取得较理想的破碎效果,在装药量及药量的分配、药包间距及药室位置的再调整,装药结构及网路等方面所采取的一系列有效的技术措施。 相似文献
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Weiwei Liu Yang Tang Fei Yang Chennan Zhang Dun Cao Gwang-jun Kim 《计算机、材料和连续体(英文)》2020,65(3):2511-2527
Intelligent Transportation System (ITS) is essential for effective identification
of vulnerable units in the transport network and its stable operation. Also, it is necessary
to establish an urban transport network vulnerability assessment model with solutions
based on Internet of Things (IoT). Previous research on vulnerability has no congestion
effect on the peak time of urban road network. The cascading failure of links or nodes is
presented by IoT monitoring system, which can collect data from a wireless sensor
network in the transport environment. The IoT monitoring system collects wireless data
via Vehicle-to-Infrastructure (V2I) channels to simulate key segments and their failure
probability. Finally, the topological structure vulnerability index and the traffic function
vulnerability index of road network are extracted from the vulnerability factors. The two
indices are standardized by calculating the relative change rate, and the comprehensive
index of the consequence after road network unit is in a failure state. Therefore, by
calculating the failure probability of road network unit and comprehensive index of road
network unit in failure state, the comprehensive vulnerability of road network can be
evaluated by a risk calculation formula. In short, the IoT-based solutions to the new
vulnerability assessment can help road network planning and traffic management
departments to achieve the ITS goals. 相似文献