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Impact of Rock Abrasivity on TBM Cutter-Discs During Tunnelling in Various Rock Formations

机译:岩石磨削率岩石磨削率在各种岩层隧道中的影响

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With the introduction of tunnel boring machines (TBMs), the rate of development and construction of tunnels has increased across the world. Breakdowns, repairs and replacements that occur in a TBM have to be addressed within the tunnel. Of the several components within a TBM, the cutter-picks within the cutter-head undergo maximum wear and tear, thereby requiring periodic replacements. In order to optimize the consumption of cutter-picks, it is important to analyse the forces involved in the cutter and the properties that govern rock-cutter interactions. One such property is the abrasivity, which can be determined by CERCHAR abrasivity index (CAI) tests. Research suggests that the value of CAI is largely dependent on the mineralogical, physical and mechanical properties of rocks. Therefore, this study aims to perform experimental analysis of the various properties and their corresponding effects on granite and to determine the respective changes in CAI.
机译:随着隧道镗床(TBMS)的引入,隧道的开发速度和施工率在全球增加。 必须在隧道内解决TBM中发生的故障,维修和替换。 在TBM内的几个部件中,刀头内的刀具镐经历最大磨损和撕裂,从而需要定期的替代品。 为了优化刀具镐的消耗,重要的是分析刀具中涉及的力量以及控制摇滚切割互动的性质。 一种这样的性质是磨料,其可以通过Cerchar磨料指数(CAI)测试来确定。 研究表明,CAI的价值在很大程度上取决于岩石的矿物学,物理和力学性质。 因此,本研究旨在对花岗岩进行各种性质及其对应效果进行实验分析,并确定CAI的各自变化。

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