Side force formation mechanism and change law of TBM center cutter

Xia, Yimin; Tian, Yanchao; Tan, Qing; Hou, Yiping

doi:10.1007/s11771-016-0361-z

Cited by 19 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Xia et al [12,13] studied the performance of cutter ring under different working conditions. Entacher et al [14,15] studied the changing law of cutter load by installing sensors on cutter for different tunneling and analysis.…”

Section: Introductionmentioning

confidence: 99%

A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads

Zhu

Sun

Huo

et al. 2019

Chin. J. Mech. Eng.

View full text Add to dashboard Cite

The accurate performance evaluation of a cutterhead is essential to improving cutterhead structure design and predicting project cost. Through extensive research, this paper evaluates the performance of a tunnel boring machine (TBM) cutterhead for cutting ability and slagging ability. This paper propose cutting efficiency, stability, and continuity of slagging as the evaluation indexes of comprehensive cutterhead performance. On the basis of research of true TBM engineering applications, this paper proposes a calculation method for each index. A slagging efficiency index with a ratio of the maximum difference between the slagging amount and average slagging is established. And a slagging stability index with a ratio of the maximum slagging fluctuation and average slagging is presented. Meanwhile, a cutting efficiency index by the weighed average value of multistage rock fragmentation of a cutter's specific energy is established. The Robbins and China Railway Construction Corporation (CRCC) cutterheads are evaluated. The results show that under the same thrust and torque, the slagging stability of the CRCC scheme is worse, but the slagging continuity of the CRCC scheme is better. The cutting ability index shows that the CRCC cutterhead is more efficient.

show abstract

Section: Introductionmentioning

confidence: 99%

A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads

Zhu

Sun

Huo

et al. 2019

Chin. J. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…A 3D FEM-SPH coupling method was applied to study the rock fragmentation mechanism by Nan et al 2017)respectively simulated the rock cutting process by the methods of FEM and DEM, to obtain the cutter forces and the optimal cutter spacing, as well as establish foundation for cutterhead performance prediction. Some scholars studied the rock cutting process based on numerical simulation and rotary cutting experiments (Xia et al, 2016;, to provide reference for side force formation mechanism and cutters layout.…”

Section: Introductionmentioning

confidence: 99%

A Prediction Method for TBM Cutterhead Dynamic Tunneling Performance under Typical Composite Geological Conditions

Ling¹,

Yang²,

Wu³

2019

Mech. Eng. Sci.

View full text Add to dashboard Cite

The cutterhead system is a core component of TBM equipment, which works in the extremely severe environment, and the strong impact loads result in severe vibration, crack, damage failure and other engineering failures. Accordingly, the key for cutterhead system structure design and parameter matching is to evaluate and predict cutterhead tunneling performance reasonably. In this paper, a prediction method for TBM cutterhead dynamic tunneling performance is proposed under the typical composite geological conditions, based on the CSM model of multi-cutters and cutter loads field test data. Then an actual TBM cutterhead of a water conservancy project is taken as an example, a spatial three-dimensional separation zone model for cutterhead tunneling is established under the typical geological condition, and the parameters influence rules of cutterhead tunneling performance are analyzed. The results show that, the cutterhead loads and specific energy change rules with different parameters are basically similar. Moreover, under the condition of penetration p=10mm, the cutterhead bending moment coefficient of variation magnitude exceeds 20%, which is the maximum, and the normal cutter spacing optimal value is 95mm. Also, when the normal cutter spacing is kept constant in 85mm, the penetration has a greater influence on the torque and specific energy coefficient of variations, which is increased from 2mm to 10mm, and the two indexes decrease by about 73%. It is indicated that proper increase of penetration is beneficial to reduce the vibration fluctuation degree of torque and specific energy. The proposed method of TBM cutterhead dynamic tunneling performance and the analysis results can provide theoretical basis and design reference for TBM cutterhead layout and tunneling parameters matching.

show abstract

Analysis on the Evolution of Rock Block Behavior During TBM Tunneling Considering the TBM–Block Interaction

2018

View full text Add to dashboard Cite

Side force formation mechanism and change law of TBM center cutter

Cited by 19 publications

References 8 publications

A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads

A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads

A Prediction Method for TBM Cutterhead Dynamic Tunneling Performance under Typical Composite Geological Conditions

Analysis on the Evolution of Rock Block Behavior During TBM Tunneling Considering the TBM–Block Interaction

Contact Info

Product

Resources

About