Shaft excavation system and shaft boring machine

Abstract

The invention discloses a shaft excavation system, which comprises a frame body and a plurality of excavation devices installed on the lower end surface of the frame body, and the excavation devices are arranged in layers from the center to the outer periphery along the radial direction of the lower end surface of the frame body , each floor is equipped with multiple excavation devices, each excavation device can rotate to cut a single circular excavation surface, the rotation axis of the excavation device is vertically set, and the single circular excavation surface of all excavation devices Completely cover the entire excavation section. By arranging multiple excavation devices in layers, the diameter of the final cut excavation section is increased, and the blind area of ​​excavation is avoided. At the same time, compared with the traditional excavation method, the diameter of a single circular excavation surface is reduced. Reduce the reverse thrust and torsional moment of the equipment during the excavation process, prevent fatigue failure of parts under heavy load conditions, and improve the overall working range. It is suitable for large-section vertical shaft excavation and improves work efficiency. The invention also discloses a shaft boring machine comprising the above system.

Description

technical field [0001] The invention relates to the field of excavation equipment, in particular to a shaft excavation system. Furthermore, the invention relates to a shaft boring machine comprising the system described above. Background technique [0002] Shaft excavation is the construction process of excavating shafts vertically downward from the ground. It is widely used in the field of underground construction, such as shield tunneling, receiving shafts, mining shafts, water conservancy project shafts, tunnel ventilation shafts, underground fortification shafts, and underground three-dimensional garage shafts. Wait. [0003] With the continuous development of shaft construction, the construction environment is becoming more and more harsh, such as more complex geological conditions, increased shaft depth, larger cross-section, larger ground stress, and more complex water conditions. In the current vertical underground space construction, most of the traditional drilli...

AI Technical Summary

Problems solved by technology

In the current vertical underground space construction, most of the traditional drilling and blasting methods and drilling methods are used, that is, manual excavation at the bottom of the well, while excavating and making the well wall or sinking the well wall for support. The disadvantages are slow excavation speed, low degree of mechanization, long construction period, high construction cost and low safety of construction personnel

[0004] At present, the swinging shaft tunneling machine with sinking method mostly adopts a two-stage rotary mechanism, and the full-section excavation is realized through the rotation. Bearings and booms are highly susceptible to multiaxial fatigue failure

Moreover, due to the limited working range of this sinking method swing shaft boring machine, it is not suitable for large-section excavation, and the work efficiency is low

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