TBM刀具岩石磨蚀性CAI值调整系数的应用

张恒辉; 吴炜

doi:10.3973/j.issn.2096-4498.2022.02.007

隧道建设 >

0 231 - 236

DOI: https://doi.org/10.3973/j.issn.2096-4498.2022.02.007

研究与探索

TBM刀具岩石磨蚀性CAI值调整系数的应用

张恒辉 ,
吴炜

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（1. 中铁隧道局集团有限公司，广东广州 511458；2. 中国铁路经济规划研究院有限公司，北京 100038）

张恒辉（1971—），男，江苏盐城人，1994年毕业于西南交通大学，焊接工艺及设备专业，本科，高级工程师，现从事定额研究工作。 E-mail: 195413557@qq.com。

网络出版日期: 2022-03-03

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Application of Adjustment Coefficient of Cerchar Abrasiveness Index for Rock Abrasiveness of Tunnel Boring Machine Cutter

ZHANG Henghui ,
WU Wei

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(1. China Railway Tunnel Group Co., Ltd., Guangzhou 511458, Guangdong, China; 2. China Railway Economic and Planning Research Institute, Beijing 100038, China)

Online published: 2022-03-03

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摘要

为研究TBM掘进不同岩层的刀具消耗规律，解决川藏铁路隧道TBM施工概预算定额刀具消耗量的适用问题，根据岩石磨蚀性指数特性，结合引汉济渭、高黎贡山TBM掘进现场实测数据成果，分析等效石英含量、单轴抗压强度、完整性等不同条件下刀具磨蚀消耗量的变化规律，并结合应用案例研究推导其与岩石磨蚀性CAI指数的对应关系。在此基础上，推导并验证不同CAI值条件下刀具消耗量调整系数，证明通过石英含量、单轴抗压强度等相关参数推导CAI指数的可行性，为概预算定额中岩石磨蚀性CAI值调整系数的应用提供了理论基础。

关键词： TBM; 刀具消耗规律; 岩石磨蚀性CAI值; 掘进机刀具; 定额调整系数

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张恒辉 , 吴炜 . TBM刀具岩石磨蚀性CAI值调整系数的应用[J]. 隧道建设, 0 : 231 -236 . DOI: 10.3973/j.issn.2096-4498.2022.02.007

Abstract

To study the law of cutting tool consumption(CTC) in tunneling using the tunnel boring machine(TBM) in different strata and to address the issues for the applicability of quota CTC in the TBM construction budget for the Sichuan-Tibet railway tunnel, the variation law of CTC under various conditions, such as equivalent quartz content, uniaxial strength, and integrity, is analyzed according to the measured data from the TBM driving sites of the Hanjiang River-Weihe River water diversion project and Gaoligongshan tunnel. Then, the corresponding relationship between CTC and the Cerchar abrasiveness index(CAI) of rock abrasiveness is deduced. Further, the adjustment coefficients of CTC under different CAI values are verified, thereby providing a theoretical basis for the application of the CAI adjustment coefficient of rock abrasiveness in budget quota.

Key words： tunnel boring machine; law of cutting tool consumption; Cerchar abrasiveness index; boring machine cutter; quota adjustment coefficient

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