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1

Disk cutter wear prediction of TBM considering sliding and rolling friction

Huang Yuanjun, Hao Rujiang, Li Jie, Guo Jingbo, Sun Yankun, Liu Jiangran

Materials Science Poland

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2023

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Vol. 41, No. 1

42--56

EN

Considering the serious wear of disk cutters in tunnel project and the low prediction accuracy of existing methods, a new method for wear prediction of disk cutters from an energy perspective was proposed. Based on contact mechanics, the rock breaking process of cutters was analyzed, and the combined action of sliding and rolling friction was considered. Furthermore, the wear prediction model of disk cutters was established, which realized the predicted wear of disk cutters under different geological conditions throughout the construction line. In addition, considering the influence of penetration on the wear prediction model, the predicted wear values under different penetrations were obtained, and their average values were taken as the predicted wear values of disk cutters considering penetration. Finally, the predicted wear values were compared with the actual wear value of disk cutters. The results showed that the average relative error between the predicted wear value of disk cutters considering sliding and rolling friction and the actual wear data was 12.8%. The average relative error between the predicted value of wear considering only sliding friction and the actual value of disk cutters is 18.3%. The average relative error between the predicted value of disk cutter wear considering penetration and the actual wear data was 12.2%, which proved the feasibility and accuracy of the prediction model. Meanwhile, it is more accurate than the model only considering sliding friction. The research results provided a scientific theoretical basis for the design of a tool change scheme in tunnel construction.

2

Behavior of damaged TBM tunnel under MJS and Micro-disturbance grouting treatment: a case study

Feng Shi, Yang Yijun, Jiang Yexiang, Li Yongdi, Yao Lianghao, Chen Xiaolong

Archives of Civil Engineering

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2023

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Vol. 69, nr 2

339--352

EN

The operating subway tunnel is often damaged due to excessive deformation in China. In order to ensure the safe for operation, remediation and protection measures must be taken, especially in soft soil areas. This paper presents a case study on remedial scheme of damaged TBM (Tunnel Boring Machine) tunnel adjacent to excavation combining with MJS (Metro Jet System) and micro-disturbance grouting technology in Hangzhou, China. The track bed settlement, horizontal displacement and convergence of the TBM tunnel caused by MJS and micro-disturbance grouting construction were analyzed and discussed. The results showed the characteristics of soil layer under the tunnel have significant influence on the treatment effect. Even if multiple grouting was adopted, the treatment failure may occur under the combination action of external loads such as traffic load or surcharge load, which should be considered when civil engineers design remediation scheme. The results can provide practical experience and guidance for similar treatment scheme of damaged TBM tunnel.

3

Budowa drogowych tuneli podwodnych tarczami zmechanizowanymi

Siemińska-Lewandowska Anna

Inżynieria i Budownictwo

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2022

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R. 78, nr 3-4

139--144

PL

W artykule przedstawiono krótki opis tarczy zmechanizowanej z podaniem jej podstawowych elementów konstrukcyjnych (w tym terminologii angielskiej) oraz zasadę działania tarczy zawiesinowej stosowanej w budowie tuneli podwodnych. Przedstawiono przykłady tuneli drogowych drążonych tarczami zawiesinowymi pod rzekami i pod morzami, w trudnych warunkach geologicznych i z ciśnieniem wody działającym na głowicę skrawającą.

EN

In the paper the short description of tunnel boring machine as well as essential parts of TBM structure and slurry type TBM used to underwater tunnels construction are presented. The examples of road subsea and under rivers tunnels, constructed in difficult geological conditions with high water pressure acting on cutter head are described.

4

Numerical investigation of TBM disc cutter cutting on microwave‑treated basalt with an unrelieved model

Yang Chun, Hassani Ferri, Zhou Keping, Zhang Quan, Wang Famin, Gao Feng, Topa Ameen

Archives of Civil and Mechanical Engineering

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2022

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Vol. 22, no. 3

art. no. e147

EN

Cutter wear or damage is a significant issue during tunnel boring machine (TBM) tunneling in hard rock. Microwave preconditioning has been verified as a promising approach to reduce cutter wear and enhance the TBM excavation efficiency. Thus, understanding the TBM cutting performance for microwave-treated hard rock is necessary. First, numerical verification of a cutting model was performed to examine the universality and reliability of the model. Then, the rock mechanical parameters of microwave-treated basalt were calibrated using linear Mohr-Coulomb theory. Finally, linear cutting simulations were conducted with an unrelieved rock model by considering the variables of the disc cutter penetration depth and microwave irradiation conditions. The numerical results indicated that the maximum reduction in the rolling and normal forces reached 38.38% and 44.95% (under a 5-kW microwave power and 3-mm penetration depth), respectively. A novel indicator of the linear friction energy was proposed to assess disc cutter wear, and the maximum reduction reached 36.81% under a microwave power of 5 kW and penetration depth of 4 mm. Considering the microwave weakening efficiency, TBM tunneling efficiency and cutter wear, microwave parameters including a high microwave power and short irradiation time were suggested for future practice.

5

„Direct Pipe” – przykład sukcesu nowej technologii w inżynierii bezwykopowej

Przybyła Bogdan

Materiały Budowlane

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2021

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nr 2

12--15

6

Szacowanie osiadania powierzchni terenu wywołanego drążeniem tunelu tarczą zmechanizowaną TBM

Ochmański M.

Materiały Budowlane

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2018

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nr 2

26--28

PL

Omówiono najczęściej wykorzystywane wzory empiryczne do opisu niecki osiadania powierzchni terenu wywołanego drążeniem tunelu tarczą zmechanizowaną. Kolejno przedstawiono model numeryczny szczegółowo odwzorowujący proces drążenia tunelu tarczą EPB umożliwiający określenie osiadania w krótkim czasie, tj. podczas drążenia tunelu i na krótko po jego zakończeniu, a także osiadania wywołanego procesem konsolidacji podłoża gruntowego. Potwierdzono duży przyrost osiadania terenu wywołanego rozproszeniem nadwyżki ciśnienia wody w porach gruntu.

EN

The most frequently used empirical formulas used to describe the short-term ground surface settlement induced by shield have been presented. Furthermore, a brief description of the numerical model for the simulation of mechanized tunnelling able to predict short-term settlement, i.e. during tunnelling and shortly after it, and as well subsidence of the ground surface due to consolidation process. A significant increase of surface settlement related to the dissipation of excess pore water pressure was confirmed.

7

O rozwoju budownictwa podziemnego w XX i XXl wieku

Grodecki W., Siemińska-Lewandowska A.

Inżynieria i Budownictwo

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2018

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R. 74, nr 7-8

383--389

PL

Przedstawiono wybrane aspekty rozwoju budownictwa podziemnego w Polsce w XX i XXl wieku. Omówiono metody budowy metra w latach pięćdziesiątych ubiegłego wieku oraz dużych wyrobisk podziemnych elektrowni Porąbka-Żar. Opisano obecnie stosowane w Polsce rodzaje tarcz zmechanizowanych i metody budowy głębokich wykopów.

EN

In the paper the selected aspects of underground construction development in XXth and XXlst century in Poland are presented. The methods of construction of underground line in the fifties and excavation of big underground chamber of Porąbka-Żar power plant are described. The Tunnel Boring Machines commonly used in Poland and the methods of deep excavation construction are presented.

8

Budowa tuneli w aglomeracjach miejskich

Lewandowska A.

Przegląd Budowlany

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2017

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R. 88, nr 11

6--10

9

Przełożenie maszyny TBM, drążenie drugiej rury tunelu i demontaż maszyny

Coto P. F., Konarska K.

Inżynieria i Budownictwo

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2015

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R. 71, nr 6

287--290

PL

Przedstawiono procesy związane z demontażem pośrednim maszyny, przełożeniem jej do szybu startowego, ponownym montażem przed przystąpieniem do drążenia drugiej rury tunelu pod Martwą Wisłą, jak również realizację samego tunelu i ostateczny demontaż tarczy.

EN

The processes related to the intermediate disassembly of the TBM, transfer to the starting shaft, assembly for drilling of the second tube under the Dead Vistula river, realization of drilling works and the final disassembly are described.

10

3D modeling of tunnel excavation using pressurized tunnel boring machine in overconsolidated soils

Demagh R, Emeriault F., Hammoud F.

Studia Geotechnica et Mechanica

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2013

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Vol. 35, nr 2

3--18

EN

The construction of shallow tunnels in urban areas requires a prior assessment of their effects on the existing structures. In the case of shield tunnel boring machines (TBM), the various construction stages carried out constitute a highly three-dimensional problem of soil/structure interaction nd are not easy to represent in a complete numerical simulation. Consequently, the tunnelling-induced soil movements are quite difficult to evaluate. A 3D simulation procedure, using a finite ifferences code, namely FLAC3D, taking into account, in an explicit manner, the main sources of ovements in the soil mass is proposed in this paper. It is illustrated by the particular case of Toulouse ubway Line B for which experimental data are available and where the soil is saturated and ighly overconsolidated. A comparison made between the numerical simulation results and the insitu easurements shows that the 3D procedure of simulation proposed is relevant, in particular regarding he adopted representation of the different operations performed by the tunnel boring machine excavation, confining pressure, shield advancement, installation of the tunnel lining, grouting f the annular void, etc). Furthermore, a parametric study enabled a better understanding of the singular ehaviour origin observed on the ground surface and within the solid soil mass, till now not entioned in the literature.

11

Niekonwencjonalne urządzenia tarczowe do tunelowania

Zwierzchowska A.

Przegląd Budowlany

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2010

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R. 81, nr 9

54-60

PL

W artykule, oprócz metod umożliwiających wbudowanie tuneli podziemnych o niekołowych przekrojach poprzecznych, została omówiona metoda mechanicznego łączenia urządzeń tarczowych oraz urządzenie tarczowe powiększające.

EN

This article describes methods for building underground tunnels with non-circular crosssections, as well as a method for the mechanical coupling of shield devices, and a shield device for enlargement.

12

Simulation of a tunnel boring machine

Balideh S., Sepehri M., Liu W. V., Suglo R., Szymański J., Planeta S.

Cuprum : czasopismo naukowo-techniczne górnictwa rud

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2010

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nr 4

45-58

EN

The operation of a Tunnel Boring Machine (TBM) is modeled using the Visual Simulation Language for Alternative Modelling (SLAM) with AweSim software. Each TBM tunneling cycle consists of the cutting, materials handling and tunnel supporting operations. The operations in the TBM cycle are interdependent and determine the rate of advance of the tunnel. In this paper, two kinds of simulations were done. The first simulation involved the TBM working with one muck car while in the second simulation, two muck cars are allocated to the TBM. The results show that the availabilities of the TBM and muck cars were significantly higher when two muck cars were assigned to the TBM than when one muck car was used. In addition, the rate of tunneling can be accelerated when the materials handling system uses 7 concrete segments per ring of supporting system and two muck cars are allocated to the TBM.

PL

Działanie Tunelowej Maszyny Wiertniczej (TBM) zostało zamodelowane przy wykorzystaniu Języka Symulacji Modelowania Alternatywnego (SLAM) z oprogramowaniem AweSim. Każdy cykl drążenia tunelu zastosowaniem TBM składa się z wrębiania, przenoszenia materiałów i prac związanych z obudową tunelu. Prace w cyklu TBM są wzajemnie zależne i determinują tempo postępu budowy tunelu. W artykule wykonano dwa rodzaje symulacji. Pierwsza symulacja obejmuje TBM, która pracuje z jednym wozem odstawczym, podczas gdy w drugiej symulacji do TBM zostały przydzielone dwa wozy odstawcze. Wyniki wskazują, że dyspozycyjność TBM i wozów odstawczych była znacznie wyższa, gdy TBM pracowała z dwoma wozami niż w przypadku wykorzystania jednego wozu. Dodatkowo, tempo budowy tunelu może być zwiększone, gdy system przenoszenia materiałów wykorzystuje 7 betonowych segmentów na pierścień systemu obudowy i dwa wozy odstawcze przydzielone do TBM.

13

Tunnelling in changing geology

Herrenknecht M., Ulrich R., Liebler B.

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

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2003

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Vol. 291, z. 4

523-533

EN

Mechanized tunnelling meanwhile covers almost all geological areas of application and offers an environmentally friendly tunnelling process. Considered to be the greatest challenges are projects consisting of mixed geologies, of high-strength abrasive hard rock, as well as unstable loose rock with clogging tendencies and high groundwater pressure. This requires a regular and professional maintenance concept for all tunnelling components participating directly and indirectly as well as an efficient construction operation for the support of the tunnel boring machine. Paris, Singapore, Porto and St. Gotthard / Switzerland are only some examples, where - through intensive technical support from the side of the TBM supplier - mechanized tunnelling is managed in extremely difficult geological and hydrological conditions. As heterogeneous as local conditions may be, the technology must be as flexible to have the ability to react to existing challenges. There is no general valid ready-made solution for the management of difficult ground conditions. That is the reason why constructive cooperation of all parties involved in the project must be the basis for a successful project completion.