Experimental method for obtaining excitation forces of cutter head of shield tunneling machine under different geological conditions

Abstract

The present invention discloses an experimental method for obtaining the excitation forces of the cutter head of a shield tunneling machine under different geological conditions. The method comprises the following steps of: a) similar material configuration; b) similar formation fabrication; c) cutter head vibration monitoring system design; d) simulation tunneling control; e) data collection and analysis; and f) cutter head geological adaptability design guidance. According to the experimental method of the invention, the excitation forces of the cutter head of the shield tunneling machine under different geological conditions can be obtained; a new novel can be provided for cutter head geological adaptability design; the basic data of the excitation forces of the cutter head under different geological conditions are of great application value for future cutter head structure design; the experimental method is worthy of being popularized.

Description

technical field [0001] The invention relates to the field of tunnel engineering experiment methods for urban subways, mountain tunnels, water diversion tunnels, etc., which adopt shield / TBM construction, and specifically relates to an experimental method for obtaining the exciting force of shield cutterheads under different geological working conditions. Background technique [0002] With the continuous development and progress of society, people's life has been greatly improved and improved, and at the same time, higher requirements have been put forward for traffic construction. In order to meet the increasingly rapid development of social needs, subway tunnels, mountain tunnels, water diversion tunnels, etc. have entered a period of rapid construction. [0003] With the vigorous development of underground space, tunnel boring machines such as shield / TBM have been more and more widely used in projects such as high-speed railways, highways, urban subways, and tunnels across...

AI Technical Summary

Problems solved by technology

For example, during shield excavation in soft and hard uneven strata or boulder strata, etc., the cutter head is greatly affected by partial load and impact load, resulting in serious hob fatigue loss, abnormal damage, stratum disturbance and subsidence, and main bearing damage serious problem

[0004] Aiming at the problem of cutterhead vibration and shock during shield tunneling / TBM construction in complex geological environments, domestic and foreign scholars have rarely conducted research. Their research methods mainly rely on numerical calculations and summaries of engineering practices. The problem of cutter vibration has not yet been developed

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