EPB/TBM双模盾构复合地层掘进参数及适应性研究<sup>*</sup>

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Abstract Research purposes: For the purpose of exploring the excavation adaptability of EPB/TBM dual-mode shield in composite strata, based on the EPB/TBM dual-mode shield constructions between Huaide station and Fuyong station of Shenzhen metro line 12 and Liuxiandong station to middle shaft of Shenzhen metro line 13, this paper compared and analyzed the variation laws of tunneling parameters and energy consumption under different excavation modes, in order to provide references for similar projects.
Research conclusions: (1) The EPB mode is used for soft soil strata to ensure the stability of the tunnel face, while TBM mode is used for the hard rock strata to avoid the risks of low tunneling speed and unexpected cutter head wear. (2) The variation law of tunneling parameters of EPB mode in soft soil strata is low speed, high torque, and high thrust, while high speed, low torque, and low thrust of TBM mode in hard rock strata. (3) The propulsion speed of the TBM mode in the slightly weathered stratum is about 38% higher than that of the EPB mode in the intermediary weathered stratum, and the proportion of effective excavation time increased by approximately 106.7%. (4) The energy consumption of EPB/TBM dual-mode shield has not increased significantly compared with EPB mode in soft strata. (5) The research in this paper can provide reference for the adaptability of dual-mode shield tunneling in composite strata.

Key words： EPB/TBM dual-mode shield statistical analysis composite strata tunneling parameters shield energy consumption

Received: 24 January 2022

PACS:	U455.43
	U231.3

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	HE Chuan
	HUANG Xing
	CHEN Fan
	SONG Tiantian
	WU Chen
	WANG Shimin

Cite this article:

HE Chuan,HUANG Xing,CHEN Fan, et al. Research on the Tunneling Parameters and Adaptability of EPB/TBM Dual-mode Shield in Composite Strata[J]. Journal of Railway Engineering Society, 2023, 40(3): 96-103.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I3/96

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