Method for applying large-diameter well sinking by utilizing underground shaft robot

Abstract

The invention discloses a method for applying large-diameter well sinking by utilizing an underground shaft robot, which comprises the following steps: hanging a cutting edge ring into a foundation pit of a position on which well sinking is applied, and temporally locking and positioning the cutting edge ring through a descending device positioned outside the foundation pit; mounting a bottom ring strip above the cutting edge ring, and mounting a digging robot on the inner surface of the bottom ring strip; digging a soil body positioned below the foundation pit by utilizing the digging robot, mounting an upper ring strip above the bottom ring strip when a section of deep soil is dug; controlling the cutting edge ring to settle downwards by using the descending device, and reciprocating until the robot tunnels to preset depth. The method has the advantages that the digging robot can automatically dig so that the digging efficiency is high; moreover, by adopting hydraulic power, underwater operation is carried out; by using the descending device, a well sinking process of the ring strips is controlled, the sedimentation velocity and the posture of the ring strips can be effectively adjusted, and deviation is avoided.

Description

technical field [0001] The invention belongs to the technical field of caisson construction, and in particular relates to a method for constructing large-diameter caissons by using an underground shaft robot. Background technique [0002] The caisson is a shaft-shaped structure. It excavates the soil in the well, relies on its own gravity to overcome the friction of the well wall and sinks to the design elevation, and then seals the bottom with concrete and fills the well hole to make it a bridge pier or other structures. Foundation. The caisson construction technology began to be used in my country in the 1950s and 1960s, and it is mainly used in large-scale caisson foundations and underwater and underground projects. There are no buildings or shallow foundation buildings or structures around the 30M range of these projects to avoid disturbance to the surrounding soil during the caisson excavation process; at the same time, groundwater needs to be pumped continuously durin...

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Problems solved by technology

[0003] The caisson construction technology in the prior art has the following problems: (1) The existing caisson construction process will cause the surrounding surface to subside and affect the safety of the surrounding buildings; (2) The existing construction equipment cannot work underwater, Therefore, continuous precipitation is required during the construction process, which will intensify the surface settlement around the construction site

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