排序方式: 共有6条查询结果,搜索用时 15 毫秒
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邹振环 《铁路通信信号工程技术》2009,6(5):54-56
阐述了站内电码化轨道电路的发展及存在问题,并介绍了站内一体化轨道电路的原理、特点和今后的应用及发展。 相似文献
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马六小 《南通航运职业技术学院学报》2010,9(4):123-125
文章重点介绍了周转轮系传动比的新解法—迭加法的形成机理、推导过程和解题步骤,并利用实例将迭加法与常用的反转法进行比较。事实证明采用迭加法解题可以避免反转法的抽象理论和繁琐计算,使解法更加简便、直观,容易理解。 相似文献
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According to explosion dynamics and elastic wave theory,the models of particle vibration velocity for simultaneous blasting and millisecond blasting are built.In the models,influential factors such as delay interval and charge quantity,are considered.The calculated vibration velocity is compared with the field test results,which shows that the theoretical values are close to the experimental ones.Meanwhile,the particle vibration velocity decreases quickly with time due to the damping of rock mass and has a harmonic motion,and the particle vibration velocity of millisecond blasting has short interval.The superposition of particle vibration velocities may reduce vibration because of wave interference,or magnify the surrounding rock response to the blasting-induced vibration. 相似文献
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阐述了AZLM计轴叠加单轨条50Hz相敏轨道电路结合电路的修改,以及安装、调试方法和注意事项,掌握计轴叠加单轨条50Hz相敏轨道电路施工的思路、方法和步骤,并应用于实际工程施工,同时积累施工经验,以期为轨道交通信号设备改造工程提供参考. 相似文献
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