Combined tbm and rockburst pretreatment tunneling method to realize rockburst pretreatment

Abstract

The invention relates to a combined TBM (tunnel boring machine) capable of achieving rock burst preprocessing and a rock burst preprocessing tunnel boring method and relates to the field of tunnel andunderground project construction. The combined TBM comprises a heading TBM and an expanding excavation TBM and is characterized in that the expanding excavation TBM wraps the heading TBM, and the heading TBM is provided with a geological drilling rig, water spraying equipment and high-frequency vibration equipment, The combined TBM has the advantages that the heading TBM excavates to allow surrounding rock to sufficiently pre-release energy, rock burst risks are lowered greatly, the heading TBM is provided with various rock burst preprocessing measures, both the heading TBM and the expandingexcavation TBM can be prevented from meeting with rock burst, and rock breaking efficiency is increased favorably. The rock burst preprocessing tunnel boring method has the advantages that surroundingrock energy is pre-released during excavation, the rock burst problem encountered during tunnel boring is preprocessed flexibly, limitation caused by the fact that the TBM mechanical system is excessively huge is overcome, and personal safety is guaranteed.

Description

technical field [0001] The invention relates to the field of tunnel and underground engineering construction, in particular to a combined TBM (Tunnel Boring Machine, full-section tunnel boring machine) for realizing rockburst pretreatment and a rockburst pretreatment excavation method. Background technique [0002] In recent years, my country's tunnel construction is in full swing, and the proportion of TBM construction is getting higher and higher. TBM is a new type of advanced tunnel construction machine that uses rotary cutters to excavate and simultaneously breaks the surrounding rock in the tunnel to form the entire tunnel section. Compared with the traditional drilling and blasting method, TBM has the advantages of high excavation efficiency, high hole quality, and less disturbance of surrounding rock. [0003] In the process of tunnel construction, rockbursts often occur in the surrounding rocks of Class I. Rockburst is a sudden and violent release of the elastic ene...

AI Technical Summary

Problems solved by technology

However, due to the large mechanical system of the TBM, the adaptability of the TBM to geological conditions is poor. Currently, the rockburst pretreatment measures carried on the huge TBM are not flexible enough for the pretreatment of rockburst problems in complex geological caverns, and the TBM will be forced to directly contact High-intensity rock bursts often cause serious accidents such as TBM machinery being stuck, buried or even scrapped, posing a threat to the personal safety of on-site construction personnel

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