采矿与安全工程学报2025，Vol.42Issue(2)：452-462,11.DOI:10.13545／j.cnki.jmse.2024.0504
盾构刮刀旋转破岩力学特性试验研究
Experimental study on mechanical characteristics of shield scrapers during rotary rock-breaking tests
摘要
Abstract
The identification of mechanical-geological interactions during shield tunneling plays a crucial role in enhancing the service life of cutting tools and improving tunneling efficiency.Current research primarily focuses on the rock-breaking performance of disc cutters,while little is known about the cutting performance of scraper cutters.This study,which was conducted at the laboratory scale,focused on the mechanical-geological cutting action of shield scraper cutters.With the aid of a large-diameter ro-tary cutting test platform,the cutting performances of two types of shell cutters and one type of Yuanbao ripping cutter were investigated.Besides,the structural characteristics and functions of these three types of scraper cutters were analyzed based on the design principles of shield cutters,and their cutting charac-teristics were further compared.The experimental results reveal that for the Yuanbao ripping cutter,the normal force,tangential force,and lateral force all go up with the increase of cutting depth.The lateral force decreases with the increase of cutting radius,while the normal and tangential forces do not vary with it.The cutting sequence influences the forces acting on the cutters.Specifically,at an even number of slots,the normal force,tangential force,and lateral force on the Type Ⅰ shell cutter grow with the increase of cutting depth,while at an odd number of slots,they rise first and then fall.As the cutting ra-dius increases,the forces on the TypeⅠshell cutter exhibit a zigzag periodic variation,and the charac-teristics of cutting forces on the Type Ⅱ shell cutter are similar to those on Type Ⅰ.The front edge of the Yuanbao ripping cutter experiences severer wear than the rear edge.The wear on the blade of the Type Ⅰ shell cutter is not prominent,and the Type Ⅱ shell cutter shows the least wear.The cutting forces on the three types of shield cutters follow an order:Type Ⅰ shell cutter＞Type Ⅱ shell cutter＞Yuanbao ripping cutter.According to the experimental results,using Yuanbao ripping cutters for cutting grout is easier during shield tunneling and places lower demands on the performance of the shield tunne-ling machine.This research provides valuable engineering insights for optimizing shield tunneling param-eters and enhancing the service life of cutting tools.关键词
盾构掘进/机械地质相互作用/贝壳刀/元宝刀/旋转切削试验平台Key words
shield tunnelling/mechanical-geological interaction/shell cutters/Yuanbao ripping cutters/rotary cutting platform分类
土木建筑引用本文复制引用
李娟娟,邓龙传,张弛,许文涛,付天池,李晓昭..盾构刮刀旋转破岩力学特性试验研究[J].采矿与安全工程学报,2025,42(2):452-462,11.基金项目
深地科学与工程云龙湖实验室重点研发项目(104023006) （104023006）
国家重点研发计划项目(2022YFC3003304) （2022YFC3003304）
徐州市科技计划社会发展重点专项项目(KC21146) （KC21146）
中国矿业大学实验技术研究与开发项目重点项目(S2023D002) （S2023D002）
国家资助博士后研究人员计划项目(GZB20230298) （GZB20230298）
