线性和旋转切割方式滚刀破岩试验对比研究

发布时间：2018-01-18 14:12

本文关键词：线性和旋转切割方式滚刀破岩试验对比研究　出处：《施工技术》2017年11期 　论文类型：期刊论文

更多相关文章： 隧道工程 贯入度 切割方式 滚刀力

【摘要】：隧道掘进机(TBM)的施工中破岩效率直接影响了工程的进度、造价。室内试验可以较真实地模拟滚刀破岩的过程,优化TBM设计参数。由于试验设备的限制,此前室内试验均为线性切割,与实际施工的旋转滚刀旋转破岩有一定差异。基于北京工业大学自主研制的机械破岩试验平台,采用19in(483mm)常截面盘形滚刀,以80mm刀间距、0.5mm贯入度为间隔,分别对某引水工程花岗岩进行线性切割和旋转切割破岩试验。对比分析了两种切割方式对滚刀力、比能的影响,发现两种切割方式下法向力、滚动力和比能变化趋势大体相同,只有侧向力存在明显差异。
[Abstract]:The efficiency of rock breaking in the construction of TBM has a direct impact on the progress and cost of the project. The laboratory test can simulate the process of rock breaking with hobs more truthfully. Optimization of TBM design parameters. Due to the limitations of test equipment, previous indoor tests are linear cutting. Based on the mechanical rock breaking test platform developed independently by Beijing University of Technology, the disk hob with constant cross section is adopted. With the interval of 80 mm tool spacing and 0.5 mm penetration, the linear cutting and rotating cutting of granite in a water diversion project were carried out respectively. The effects of two cutting methods on the force and specific energy of hob were compared and analyzed. It is found that the change trend of normal force, rolling force and specific energy of the two cutting modes is about the same, but only the lateral force has obvious difference.
【作者单位】：北京工业大学城市防灾与减灾教育部重点实验室;
【基金】：国家自然科学基金项目(51508010)
【分类号】：U455.31
【正文快照】： 0引言在地下工程施工中,隧道掘进机(TBM)由于安全性高、扰动小、通风好、成型快、连续作业等优点,已得到广泛应用[1]。TBM的破岩效率由TBM设计参数、TBM运行参数以及岩体条件共同决定[2]。室内试验可以较真实地模拟TBM滚刀破岩,对于研究滚刀破岩规律、优化刀盘设计及施工参数

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