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An experimental research on the rock cutting process of the gage cutters for rock tunnel boring machine (TBM)
Tunnelling and Underground Space Technology ( IF 6.7 ) Pub Date : 2016-02-01 , DOI: 10.1016/j.tust.2015.12.008
Geng Qi , Wei Zhengying , Meng Hao

Abstract This paper proposed an experimental method to investigate the rock cutting process of TBM gage cutters based on the full-scale rotary cutting machine (RCM). The key point of this method is to reconstruct the RCM by inserting three wedges with angles of 10°, 20° and 30° respectively into the space between the cutter base and cutter box. As a result, the rock cutting process of gage cutters with tilt angles of 10°, 20° and 30° can be proceed. Using this method, rock cutting experiments were conducted with penetrations of 2 mm, 4 mm, 6 mm and 8 mm respectively. The testing results were analysed on the rock cutting force, rock debris dimension, specific energy and cutting surface profile, and it was found that: (1) the cutting forces and specific energy of the gage cutter were lower than those of the normal cutter respectively; and (2) the depth of the rock broken zone was smaller than the cutting depth. The testing results can also be used to validate corresponding numerical models and design the layout of gage cutters.

中文翻译:

岩石隧道掘进机(TBM)定径刀具切削岩石过程的试验研究

摘要 提出了一种基于全尺寸旋切机(RCM)的TBM限距刀具岩石切削过程试验方法。该方法的关键是通过在刀座和刀箱之间的空间中分别插入三个角度为10°、20°和30°的楔块来重建RCM。因此,可以进行倾斜角为10°、20°和30°的量规刀具的岩石切割过程。使用这种方法,分别以 2 毫米、4 毫米、6 毫米和 8 毫米的穿透度进行岩石切割实验。对岩石切削力、岩屑尺寸、比能和切削面轮廓的测试结果进行分析,发现:(1)定径刀具的切削力和比能分别低于普通刀具; (2)岩石破碎带深度小于切削深度。测试结果还可用于验证相应的数值模型和设计量规刀具的布局。
更新日期:2016-02-01
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