采用正交试验优化分析极硬岩隧道滚刀刃形  

OPTIMUM ANALYSIS OF HOB BLADE SHAPE IN EXTREMELY HARD ROCK TUNNEL BY ORTHOGONAL TEST

作　　者：宋天田 翟乾智 马偃辉 刘宁 SONG Tian-tian;ZHAI Qian-zhi;MA Yan-hui;LIU Ning(Shenzhen Metro Group Co.,Ltd.,518000,Shenzhen,Guangdong,China;State Key Laboratory of Shield Machine and Boring Technology,450000,Zhengzhou,China;CCCC-Shep Third Highway Engineering Co.,Ltd.,710000,Xi'an,China)

机构地区：[1]深圳市地铁集团有限公司,广东深圳518000 [2]盾构及掘进技术国家重点实验室,郑州450000 [3]中交二公局第三工程有限公司,西安710000

出　　处：《建筑技术》2020年第2期238-241,共4页Architecture Technology

基　　金：国家863计划项目(2012AA041802);深圳地铁集团科研课题(ZHDT-KY035/2017);中铁隧道局集团科技创新课题(隧研合2017-05);中铁隧道局集团科技创新课题(隧研合2018-06);中国中铁股份有限公司科技研究开发计划(2019-重点-20-02)。

摘　　要：滚刀的破岩效率是影响隧道掘进机掘进进度的关键因素。依托深圳地铁极硬岩掘进工程,研究极难掘进的致密花岗岩地层滚刀刃形破岩效果。通过正交试验分析滚刀各相关参数试验,确定在极硬岩地层中滚刀刃形尺寸对硬岩掘进效率有较大影响,得到了施工掘进参数和刃形参数对掘进效率影响的权重,为硬岩地层刀具的选型提供参考。The rock breaking efficiency of the hob is the most critical factor affecting the progress of TMB.Based on the ultra-hard rock excavation project of Shenzhen Metro,this paper studies the effect of hob-edge rock breaking on the dense granite stratum encountered in construction.Through orthogonal experiments,the relevant parameters of the hob are analyzed experimentally.It is found that the size of the hob blade has a great influence on the efficiency of hard rock excavation in the extremely hard rock stratum,and the tunneling parameters and the blade shape parameters are obtained.The weight of the influence provides a reference for the selection of hard rock formation tools.

关 键 词：滚刀刃形 刃宽 刀刃过渡圆弧半径 破岩效率 

分 类 号：TU99[建筑科学—市政工程] U451.5[建筑科学—桥梁与隧道工程]