基于线性切割试验碴片分析的滚刀破岩效率研究

龚秋明; 周小雄; 殷丽君; 何冠文; 苗崇通

doi:10.3973/j.issn.1672-741X.2017.03.016

隧道建设 >

2017 , Vol. 37 >Issue 3: 363 - 368

DOI: https://doi.org/10.3973/j.issn.1672-741X.2017.03.016

施工机械

基于线性切割试验碴片分析的滚刀破岩效率研究

龚秋明 ,
周小雄 ,
殷丽君 ,
何冠文 ,
苗崇通

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（北京工业大学城市防灾与减灾教育部重点实验室，北京 100124）

龚秋明（1969—），男，湖南安化人，2005年毕业于新加坡南洋理工大学（NTU），岩土工程专业，博士，教授，主要从事掘进机、盾构隧道开挖，岩土工程监测，边坡稳定性分析，岩土工程勘察及评价工作。Email： gongqiuming@bjut.edu.cn。*通讯作者：周小雄， Email: zhou_xiaoxiong@foxmail.com。

收稿日期: 2016-09-21

修回日期: 2017-01-02

网络出版日期: 2017-03-30

基金资助

国家重点基础研究发展计划(“973”计划)项目（2014CB046900）；国家自然科学基金青年基金项目（51508010）

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Study of Rock Breaking Efficiency of TBM Disc Cutter Based  on Chips Analysis of Linear Cutting Test

GONG Qiuming ,
ZHOU Xiaoxiong ,
YIN Lijun ,
HE Guanwen ,
MIAO Chongtong

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(Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,  Beijing University of Technology, Beijing 100124, China)

Received date: 2016-09-21

Revised date: 2017-01-02

Online published: 2017-03-30

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摘要

为了研究碴片形状与TBM破岩效率之间的关系，应用机械破岩试验平台对北山花岗岩进行线性切割试验。通过对试验所形成的碴片进行粗糙度指数、扁平度以及长轴分析，发现不同滚刀间距及贯入度下所形成的碴片有很好的规律。TBM破岩效率越高，所形成的碴片大岩块的长轴更长，粗糙度指数更大，同时碴片也更加扁平。将粗糙度指数与比能进行回归分析，二者具有很好的线性关系。对于北山花岗岩，当刀间距与贯入度的比值为40左右时，TBM破岩效率最高。因此，碴片分析对评价TBM的破岩效率和优化施工具有重要意义。

关键词： TBM; 碴片; 破岩效率; 滚刀破岩试验; 线性切割试验

本文引用格式

龚秋明 , 周小雄 , 殷丽君 , 何冠文 , 苗崇通 . 基于线性切割试验碴片分析的滚刀破岩效率研究[J]. 隧道建设, 2017 , 37(3) : 363 -368 . DOI: 10.3973/j.issn.1672-741X.2017.03.016

Abstract

In order to study the relationship between rock breaking efficiency of TBM and the shapes of rock chips, the linear cutting test is carried out on Beishan granite by mechanical rock breaking test platform. The analytical results of coarseness index, flatness and long axis of rock chips show that the shapes of rock chips can reflect the rock breaking efficiency of TBM. The higher the rock breaking efficiency of TBM is, the longer the long axis of rock clip is, the larger the coarseness index of rock clip is and the flatter the rock clip is. The coarseness index and specific energy show linear relationship by regression analysis. The rock breaking efficiency of TBM reaches the highest when the ratio between spacing of cutters and penetration rate is 40. The results show that the analysis of rock chips is very important for evaluation of rock breaking efficiency of TBM and construction optimization.

Key words： TBM; rock chip; rock breaking efficiency; rock breaking test by disc cutter; linear cutting test

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