Introduction of an empirical TBM cutter wear prediction model for pyroclastic and mafic igneous rocks; a case history of Karaj water conveyance tunnel, Iran

Hassanpour, Jafar; Rostami, Jamal; Azali, Sadegh Tarigh; Zhao, Jun

doi:10.1016/j.tust.2014.05.007

Cited by 102 publications

(20 citation statements)

References 3 publications

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“…RQD, RMR, Q and GSI) for selected tunnel sections. In addition to the database used to develop prognosis equations, a separate part of the database, mainly containing the data collected after 2009, was used to assess the validity and accuracy of the proposed equations that were developed based on the data for the period 2003 to 2009, which were analyzed and published before [6], [7], [8], [9,] [10], [11]. In this part of the database, each engineering geological unit was considered as an individual tunnel section with average values of geological and TBM performance parameters.…”

Section: Tbm Field Performance Data For Penetration Rate (Rop)mentioning

confidence: 99%

“…Many researchers have worked on developing various prediction models or adjustment factors for the common existing models for estimating the performance and penetration rate of hard rock TBMs. Research works by Bruland [1], Barton [2], Yagiz [3], Gong and Zhao [4], Frenzel [5], Hassanpour [6], Hassanpour et al [7], [8], [9], [10], [11], Delisio and Zhao [12], etc. are some of the most recent examples of such studies.…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies by the authors [6], [7], [8], [9], [10] and [11] are based on data obtained from some tunneling projects in Iran and a couple of projects around the globe. The main objective of the previous studies was to investigate relationships between rock mass properties and actual machine performance.…”

Section: Introductionmentioning

confidence: 99%

“…In a follow up study [11], data collected during construction and pre-construction phases of Karaj water conveyance tunnel (Lots 1 and 2) was used to develop new formulas to predict cutter wear. The project comprises a total excavated length of about 30 km of tunnels in pyroclastic and mafic igneous rocks.…”

Section: Introductionmentioning

confidence: 99%

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TBM performance and disc cutter wear prediction based on ten years experience of TBM tunnelling in Iran

Hassanpour

Rostami

Zhao

et al. 2015

Geomechanics and Tunnelling

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Accurate estimation of rate of penetration (ROP), daily rate of advance (AR), and cutter cost/life is necessary for the justification and successful use of a TBM on any tunneling project. Various models have been introduced over the years to provide such estimates. In many cases, these models have been successful with pin point accuracy, and in other instances off by a wide margin. Improving the accuracy of performance prediction models for hard rock TBMs has been the subject of many studies, some yielding project-based models and some more universal models that can be used elsewhere. This paper will discuss the latest version of a new empirical model for estimating penetration rate and disc cutter life for hard rock TBM tunneling based on recent tunneling projects, constructed during the period 2002-2009. The new model was then applied to predict TBM performance and disc cutter wear in different mechanized tunneling projects under construction since 2009. Accuracy and validity of the model for prediction of ROP were checked by comparing predicted and measured values of TBM performance in 24 km of newly bored tunnel. The results indicate that despite some minor deviations in estimates in some tunnel sections, reasonable agreement can be observed between predicted and actual ROP of TBMs.

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Section: Tbm Field Performance Data For Penetration Rate (Rop)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

TBM performance and disc cutter wear prediction based on ten years experience of TBM tunnelling in Iran

Hassanpour

Rostami

Zhao

et al. 2015

Geomechanics and Tunnelling

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“…预测理论公式 [4] ；MAIDL 等 [5] 基于 UCS 和 CAI，建立了切削不同岩石的 432 mm(17 in)滚刀滚动切削总距离预测公式；FRENZEL 等 [6] 基于 CAI 和工程数据分析提出了一套滚刀消耗预测模型； HASSANPOUR 等 [7][8] 通过对伊朗一条隧道的滚刀消耗数据进行分析，建立了基于岩石硬度(Vicker's hardness number of rock, VHNR)和 UCS 的滚刀寿命预测公式；万治昌等 [9][10][11] 分析了秦岭隧道 TB880E-TBM 的滚刀磨损消耗情况，是国内最早的滚刀磨损消耗研究；赵战欣 [12][13] 对西秦岭隧道的滚刀消耗进行了初步分析，发现刀盘外侧区域滚刀消耗严重；杨延栋等 [14] 从宏观能量理论和微观磨损机制的角度对滚刀刃的磨损消耗进行了预测。本文从能量角度，基于两条隧道掘进的滚刀磨损数据，通过引入滚刀刃单位磨损功和等效磨损函数等概念，对不同 TBM 刀盘、掘进参数、工程地质条件和不同刀盘区域的滚刀磨损消耗进行了分析研究，论证了使用能量方法进行滚刀磨损分析预测的合理性，并从滚刀磨损消耗的角度为滚刀的安装布局设计提出了一些建议。 1 基于磨损功的滚刀磨损预测方法 [15] 。图 2 为开挖秦岭隧道的 TB880E TBM 的滚刀消耗和磨损数据 [10] …”

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Analytical Research on the Wear Mechanism of TBM Disc Cutters Based on an Energy Approach

Geng¹

2018

JME

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Abstract：The consumption of disc cutters on full-face rock tunnel boring machines (TBMs) accounts for a large percentage of the tunnel excavation cost. Based on the engineering data from Qinling rock tunnel in China and Røssåga rock tunnel in Norway, the wear mechanism of disc cutters has been studied with an energy approach. The unit friction work of cutter rings and an equavilent wear function are proposed and analyzed. The calculation formula of the cutter ring unit friction work is established according to the rock breaking loads, cutter position parameters and TBM boring parameters by analyzing the movement, load and wear mechanism of disc cutters on different cutter positions. Based on the solvement of the equivalent wear function and the calculation of the cutter ring unit friction work for the 8.8 m and 7.23 m diameter TBMs respectively, the wear of cutters on different cutterhead zones for TBMs boring through tunnel sections with different geology parameters is analyzed. It is found that the equivalent wear function is inversely proportional to the cutter life index (CLI). The symmetry axis of the equavilent wear function is determined by the disc cutter layout. The rock breaking and cutter wear status of the cutters around the symmetry axis is the best. By revealing the reasons for high wear rate of the cutters on inner and outer cutterhead zones, suggestions for cutter layout design are given, e.g. increasing the spacing of cutters in inner cutterhead zones, add more gage cutters with the tilt angle between 30º to 40º.Key words：tunnel boring machine；cutter wear；energy analysis；equavilent wear function 0 前言 *

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State of the Art der Verschleißprognose im maschinellen Tunnelbau

Stopp,

Feinendegen

2023

Geomechanics and Tunnelling

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The wear of cutting tools in mechanised tunnelling is closely linked to the abrasiveness of the present subsoil. Therefore, most of the models used for wear prediction take an abrasiveness index into account. The most common index used for hard rock is the Cerchar Abrasiveness Index (CAI); whereas such a standard does not yet exist for soil. Both the literature research and the results of calculation examples presented in the article show that significantly more practical models are currently available for wear prediction in hard rock. One reason for this is that far more wear‐relevant influencing factors have to be quantified for soft ground. Another reason is that the scientific studies concerning this topic only started in the course of mechanised tunnelling. Since especially the calculations carried out for low‐abrasive rocks differ widely among the different models for tool life, further research is needed also for wear prediction in hard rock

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Introduction of an empirical TBM cutter wear prediction model for pyroclastic and mafic igneous rocks; a case history of Karaj water conveyance tunnel, Iran

Cited by 102 publications

References 3 publications

TBM performance and disc cutter wear prediction based on ten years experience of TBM tunnelling in Iran

TBM performance and disc cutter wear prediction based on ten years experience of TBM tunnelling in Iran

Analytical Research on the Wear Mechanism of TBM Disc Cutters Based on an Energy Approach

State of the Art der Verschleißprognose im maschinellen Tunnelbau

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