激光辅助TBM盘形滚刀压头侵岩缩尺试验研究

doi:10.16285/j.rsm.2021.0770

岩土力学 ›› 2022, Vol. 43 ›› Issue (1): 87-96.doi: 10.16285/j.rsm.2021.0770

激光辅助TBM盘形滚刀压头侵岩缩尺试验研究

张魁^{1, 2}，杨长¹，陈春雷¹，彭赐彩¹，刘杰³

1. 湘潭大学机械工程学院，湖南湘潭 411105；2. 湘潭大学复杂轨道加工技术与装备教育部工程研究中心，湖南湘潭 411105； 3. 湖南工程学院建筑工程学院，湖南湘潭 411101

收稿日期:2021-05-24 修回日期:2021-09-13 出版日期:2022-01-10 发布日期:2022-01-06
作者简介:张魁，男，1985年生，博士，副教授，硕士生导师，主要从事大型全断面隧道掘进装备（TBM）刀盘刀具破岩机制及其设计制造理论研究。
基金资助:
国家自然科学基金项目（No. 51704256，No. 51804110）；湖南省自然科学基金项目（No. 2020JJ4583，No. 2017JJ3292）；湖南省科技创新计划资助（No. 2021RC2094）；湖南省教育厅科学研究项目一般项目（No. 19C1756）。

Scale model test on laser-assisted rock indentation by TBM disc cutter indenter

ZHANG Kui^{1, 2}, YANG Chang¹, CHEN Chun-lei¹, PENG Ci-cai¹, LIU Jie³

1. School of Mechanical Engineering, Xiangtan University, Xiangtan, Hunan 411105, China; 2. Engineering Research Center of Complex Tracks Processing Technology and Equipment of Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, China; 3. Architectural Engineering Institute, Hunan Institute of Engineering, Xiangtan, Hunan 411101, China

Received:2021-05-24 Revised:2021-09-13 Online:2022-01-10 Published:2022-01-06
Supported by:
This work was supported by the National Natural Science Foundation of China (51704256, 51804110), Hunan Provincial Natural Science Foundation of China (2020JJ4583, 2017JJ3292), the Science and Technology Innovation Program of Hunan Province (2021RC2094) and the General Program of Scientific Research Fund of Hunan Provincial Education Department (19C1756).

摘要/Abstract

摘要： 为了验证高能激光技术能够辅助隧道掘进机(tunnel boring machine，简称TBM)盘形滚刀（以下简称滚刀）实现高效破岩，以滚刀破岩过程中基本的运动形式——侵岩为研究对象，参照17 inch（432 mm）工程用滚刀，按1:8的比例制备了缩尺比例滚刀压头（以下引述为滚刀压头），开展了以孔孔距（2、3、4、5 mm）、刀孔距（3、4、5、6、7 mm）为变量的激光辅助滚刀压头侵岩L20(4×5)正交试验以及无激光作用的对照组试验。试验研究结果表明：随着刀孔距的增加，滚刀压头的破岩量与岩石破碎块度均增加，而垂直力和比能耗均降低，最优刀孔距为6 mm；随着孔孔距的增加，破岩量、垂直力和岩石侵入难度系数均降低，而岩石破碎块度和比能耗均增加，最优孔孔距为3 mm。与传统滚刀回转滚压破岩方式相比，在激光辅助作用下，可促进岩石张拉裂纹的产生，提高了滚刀侵岩效率。所提出的激光辅助滚刀耦合破岩模式在未来TBM极硬岩层隧道掘进中具有一定的应用前景。

关键词: 隧道掘进机（TBM）, 盘形滚刀, 激光辅助, 激光钻孔, 侵岩

Abstract: To verify the efficient rock breaking ability of high-energy laser technology using for tunnel boring machines (shorted for TBM) disc cutters (hereinafter referred to as disc cutters), taking the basic movement form of the hob in the process of rock breaking-rock intrusion as the research object, a reduced scale hob indenter is prepared with a ratio of 1:8 (the following is the hob indenter) referring to the 17 inch (432 mm) engineering hob, orthogonal tests of rock invasion by hob indenter L20 (4×5) with laser assist and comparative tests without laser assist were carried out with different hole spacing (2, 3, 4, 5 mm) and cutter-hole spacing (3, 4, 5, 6, 7 mm) as variables. The experimental results show that with the increase of indenter-hole distance, both volumes of rock breakage and rock fragmentation size increase; with the increasing laser hole distance, rock breakage volume, vertical forces and the difficulty of rock breaking decrease, while rock fragmentation size and specific energy increase. The optimal indenter-hole distance and laser hole distance are 6 mm and 3 mm respectively. Compared with the traditional rock-breaking method by disc cutters, laser-assisted rock cutting would promote the generation of rock tensile cracks, and improve the rock-breaking efficiency of indentation by the cutters. The research results also show the prospects for application of the proposed laser-assisted rock cutting model to TBM tunneling under the extremely hard rock grounds in the future.

Key words: tunnel boring machine (TBM), disc cutter, laser-assisted, rock drilling, indentation

中图分类号:

TU 94+1

张魁, 杨长, 陈春雷, 彭赐彩, 刘杰, . 激光辅助TBM盘形滚刀压头侵岩缩尺试验研究[J]. 岩土力学, 2022, 43(1): 87-96.

ZHANG Kui, YANG Chang, CHEN Chun-lei, PENG Ci-cai, LIU Jie, . Scale model test on laser-assisted rock indentation by TBM disc cutter indenter[J]. Rock and Soil Mechanics, 2022, 43(1): 87-96.

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激光辅助TBM盘形滚刀压头侵岩缩尺试验研究

Scale model test on laser-assisted rock indentation by TBM disc cutter indenter

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