A new energy saving thrust system design for tunnel boring machine

AbstractThe 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.

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Research of electro-hydraulic control system design and energy saving characteristic in the new drawbead test bed

Proceedings of 2011 International Conference on Fluid Power and Mechatronics ◽

10.1109/fpm.2011.6045777 ◽

2011 ◽

Cited By ~ 2

Author(s):

Guo Rui ◽

Zhao Jingyi

Keyword(s):

Control System ◽

System Design ◽

Energy Saving ◽

Control System Design ◽

Hydraulic Control ◽

Test Bed ◽

Hydraulic Control System

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Research on Application of New Energy-Saving Building Materials

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.193-194.406 ◽

2012 ◽

Vol 193-194 ◽

pp. 406-410 ◽

Cited By ~ 1

Author(s):

Ai Fang Liu ◽

Shu Rong Guo

Keyword(s):

Energy Saving ◽

Building Material ◽

Building Materials ◽

Development Trend ◽

Scientific Data ◽

Wall Material ◽

Insulation Material ◽

Essential Question ◽

New Energy ◽

Research On Application

Currently, energy saving and consumption reduction has been a crucial task the domestic people are facing with. It has been considered as essential question in the field of building materials to research and develop a new energy saving building material. In this paper, we classified new wall material and thermal insulation material, analyzed the performance, feature and application of such materials, selected typical foam concrete and slurry insulation material and analyzed their thermal properties and technology parameters and so on, to present the development trend and direction of energy saving building material, to provide valid scientific data to relevant building energy saving management units, design units and construction units, to play a positive guiding role in improving the application level of new energy saving building material and promoting new energy saving building material of high quality.

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