• 土木工程——隧道与地下工程专题 •

### 一种基于TBM掘进参数的现场岩石强度快速估算模型

1. 1. 中国葛洲坝集团第三工程公司, 陕西 西安 710000;2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室, 湖北 武汉 430071
• 收稿日期:2017-01-16 出版日期:2017-04-20 发布日期:2017-01-16
• 作者简介:陈恩瑜(1969— ),男,安徽滁州人,高级工程师,主要研究方向为水电工程项目管理. E-mail: 326523760@qq.com

### Development of a novel rock strength estimation model based on TBM boring performance

CHEN Enyu1, DENG Siwen1, CHEN Fangming1, MA Chishuai2

1. 1. No.3 Engineering Co., Ltd., China Gezhouba Group, Xi'an 710000, Shaanxi, China;
2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China
• Received:2017-01-16 Online:2017-04-20 Published:2017-01-16

Abstract: Based on the analysis of the correlation between in-situ rock strength and TBM performance, a novel rock strength estimation model was proposed. To ensure the in-situ rock strength more accurately, variations of average TBM performance parameters along the tunnel alignment was analyzed in detail, then the fitting relationship with uniaxial compressive strength(UCS)was established. UCS was estimated rapidly by the field penetration index(FPI)based on regression coefficient R2: 0.761 2(field penetration index, FPI)> 0.759 5(thrust)>0.691 5(specific energy, SE)>0.598 6(torque)>0.561 5(penetration). Compared with the previous works on rock strength estimation, the novel rock strength estimation model is more targeted and applicable. The preliminary results of this study provide a more practical and feasible idea for in-situ rock strength estimation of TBM engineerings.

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