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隧道建设(中英文) ›› 2022, Vol. 42 ›› Issue (8): 1414-1419.DOI: 10.3973/j.issn.2096-4498.2022.08.010

• 研究与探索 • 上一篇    下一篇

水射流辅助机械滚刀破岩试验研究

韩伟锋1 2   

  1. 1. 盾构及掘进技术国家重点实验室, 河南 郑州〓450001 2. 中铁隧道局集团有限公司, 广东 广州〓511458
  • 出版日期:2022-08-20 发布日期:2022-09-09
  • 作者简介:韩伟锋(1985—),男,河南许昌人,2008年毕业于河南科技大学,机械设计制造及自动化专业,本科,高级工程师,现从事盾构及掘进技术研究工作。Email: 419495617@qq.com。

Experimental Study on RockBreaking Using a Water Jet Assisted Mechanical Disc Cutter

HAN Weifeng1, 2   

  1. (1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China; 2. China Railway Tunnel Group Co., Ltd., Guangzhou 511458, Guangdong, China)
  • Online:2022-08-20 Published:2022-09-09

摘要: 为解决极端软硬不均、极硬岩(硬度超过180 MPa)等复杂地质条件下,隧道掘进机破岩过程中刀具破岩效率低及“啃不动”的问题,采用滚刀岩机作用综合试验台,搭载高压水射流装置,采用不同的水射流参数及掘进参数对花岗岩试样开展破岩试验,研究不同条件下水射流辅助机械滚刀破岩对掘进参数及效率的影响。通过试验获得水射流破岩合理的靶距与压力,探明水射流与机械滚刀交叉轨迹复合破岩、同轨迹复合破岩相对于纯机械滚刀破岩刀盘推力、转矩及破岩效能的变化特性。

关键词: 隧道掘进机, 滚刀, 水射流, 复合破岩, 破岩效率

Abstract: When tunnel boring machine tunneling in complex geological conditions, such as extremely uneven soft and hard rock with hardness exceeding 180 MPa, the cutter′s rock breaking efficiency is low and cutterhead jams occur. To address these issues, a rockbreaking test is conducted on granite samples using a disc cutter rockmachine interaction comprehensive test platform equipped with a highpressure water jet device. The influence of water jetassisted mechanical disc cutter rockbreaking on tunneling parameters and efficiency under various conditions is investigated using various water jets and tunneling parameters. The reasonable target distance and pressure of water jet rockbreaking are obtained, as well as the crosstrack of the water jet and mechanical disc cutter, the change characteristics of thrust, torque, and rockbreaking efficiency of the cutterhead of the same track composite rockbreaking and relatively pure mechanical disc cutter rockbreaking are validated.