Experimental and analytical study of friction forces during microtunneling operations

Pellet-Beaucour, A.-L; Kastner, Richard

doi:10.1016/s0886-7798(01)00044-x

Cited by 129 publications

(81 citation statements)

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“…The results from direct shear tests were interpreted using a simple non-linear power law together with the generalised tangential method. These resulting tangential peak Mohr-Coulomb (MC) strength parameters c 0 t,p and f 0 t,p were applied to the well-established jacking force model developed by Pellet-Beaucour and Kastner (2002).…”

Section: Previous Studies On Jacking Forcesmentioning

confidence: 99%

Impact of highly weathered geology on pipe-jacking forces

Choo

Ong

2017

Geotechnical Research

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, Malaysia, 7·7 km of trunk sewer lines were constructed in the highly fractured, highly weathered Tuang Formation using a pipe-jacking method. The pipelines were founded at depths of up to 35 m below Kuching City, where the majority of the pipe-jacking activities would traverse the Tuang Formation. Jacking forces in highly fractured geology are not well understood as most jacking force models were derived for drives traversing soils. Therefore, a novel method was developed, whereby equivalent rock strength characteristics were interpreted from direct shear testing on reconstituted tunnelling rock spoils. Tangential peak strength parameters, c 0 t,p and e 0 t,p , were developed from the nonlinear behaviour of the reconstituted spoils and applied to a wellestablished jacking model to assess arching and development of jacking forces from four documented drives. The backanalysed parameters l avg and r EV were used to demonstrate that geology had significantly affected the development of jacking forces. The back-analysis of the studied drives was successfully validated through finite-element modelling. This research shows that the developed parameters c 0 t,p and e 0 t,p and the back-analysed parameters l avg and r EV can be reliably used to predict jacking forces in highly fractured, highly weathered geology.

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Section: Previous Studies On Jacking Forcesmentioning

confidence: 99%

Impact of highly weathered geology on pipe-jacking forces

Choo

Ong

2017

Geotechnical Research

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“…There are various studies investigating the jacking force by theoretical derivations (Japan Micro Tunnelling Association, 2000;Pellet-Beaucour and Kastner, 2002;Chiang, 2006); by examining the mechanical behavior of soil, jacking force can be calculated while accounting for the overburden pressure on the pipes. However, due to the geological conditions and complicated construction scenarios, various pipe jacking techniques and lubricants were developed and applied.…”

Section: Lubrication and Jacking Force Estimation Modelsmentioning

confidence: 99%

“…Marshall (1998) proposed the stress measurements at the pipesoil interface show that the relations between jacking loads, pipeline misalignment, stoppages, lubrication, and excavation method area highly complex. Pellet-Beaucour and Kastner (2002) pointed out that the frictional force is the main component of the resistance to pipe jacking, and the major controlling factors on friction are lubrication, stoppage, deviation and overcut. In recent years, various methods have been developed and discussed to improve jacking force estimation.…”

Section: Lubrication and Jacking Force Estimation Modelsmentioning

confidence: 99%

Numerical simulation for the estimation the jacking force of pipe jacking

Yen

Shou

2015

Tunnelling and Underground Space Technology

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“…The total jack thrust force P T should be equal to the sum of positive penetration resistance R P of cutter head and the friction force between soil and tube wall [17], as shown in Fig. 6.…”

Section: Comparison Of Jack Thrust Force In Four Testsmentioning

confidence: 99%

Experimental study on working parameters of earth pressure balance shield machine tunneling in soft ground

Zhu

Zheng

et al. 2008

Front. Archit. Civ. Eng. China

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Deep sedimentary deposits of soft clays are widely distributed in coastal areas as well as many interior major cities in China. In order to study the stratum adaptability of earth pressure balance (EPB) shield machine tunneling in such types of soft ground, model tests of tunneling excavation, using the running tunnel of the Shanghai Metro Line M8 as a background, are carried out with different over burden ratios, opening rates of cutter head, driving speeds and rotation speeds of screw conveyor. Based on the test results, the interrelationships between chamber pressure and mucking efficiency, mucking rate and driving speed, thrust force and torque are obtained. The influences of tunnel depth, opening rate of cutter head and driving speed on thrust force and torque are revealed. Such findings can not only facilitate establishing relationships between shield working parameters and soil properties, but also serve as a guide for the design and construction of shield tunnel in soft ground.

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Experimental and analytical study of friction forces during microtunneling operations

Cited by 129 publications

References 0 publications

Impact of highly weathered geology on pipe-jacking forces

Impact of highly weathered geology on pipe-jacking forces

Numerical simulation for the estimation the jacking force of pipe jacking

Experimental study on working parameters of earth pressure balance shield machine tunneling in soft ground

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