引汉济渭岭南TBM工程二长花岗岩地层滚刀磨损研究

发布时间：2018-06-28 18:42

  本文选题：隧洞 + TBM　； 参考：《隧道建设》2017年09期

【摘要】：针对秦岭二长花岗岩条件下TBM滚刀消耗严重的问题,依托引汉济渭岭南TBM工程,通过对现场岩样和刀圈材料开展室内试验,明确岩石的磨蚀性能和刀圈的耐磨性能指标,发现岩石的磨蚀性由其抗压强度与矿物成分共同决定,刀圈的耐磨性主要取决于材料的成分及组织。通过对前2 000 m试掘进段刀具使用情况和磨损数据的分析,掌握各个刀位的磨损规律:1)正滚刀的累计磨损量随滚刀安装半径的增加近似呈线性增长;边滚刀中处于过渡区域的滚刀累计磨损量最大,两侧逐渐减小。2)与滚动距离磨损速率相比,破岩体积磨损速率更能准确衡量滚刀磨损的快慢程度。3)重复磨损对边滚刀磨损影响较大,而通过在边缘区域增加滚刀数量来提高耐磨性的方法可以起到一定作用,但不能从根本上解决问题。
[Abstract]:In view of the serious consumption of TBM hob under the condition of Qinling monzogranite, relying on the TBM project in the south of Jiwei, through the laboratory test of rock samples and cutter ring materials in the field, the wear resistance of rock and the wear resistance index of the cutter ring are determined. It is found that the abrasion resistance of rock is determined by its compressive strength and mineral composition, and the wear resistance of the knife rim is mainly determined by the composition and microstructure of the material. Based on the analysis of the tool usage and wear data of the first 2 000 m trial driving section, the wear law of each tool position is mastered: 1) the cumulative wear amount of the normal hob increases approximately linearly with the increase of the hob installation radius. In the edge hob, the cumulative wear of the hob in the transition region is the largest, and the two sides gradually decrease by .2) compared with the wear rate of the rolling distance, The wear rate of rock breaking volume can more accurately measure the speed and slowness of hob wear. 3) repeated wear has a great effect on edge hob wear. However, the method of increasing the number of hobs in the edge region to improve the wear resistance can play a certain role. However, the problem cannot be solved fundamentally.
【作者单位】： 盾构及掘进技术国家重点实验室;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2014CB046906) 中国铁路总公司科技研究开发计划(2016G004-A) 中铁隧道集团科技创新计划(隧研合2016-03)
【分类号】：TV534;TV554
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本文编号：2078971