Tool changing method based on slurry balanced shield machine with freezing function

Abstract

The invention discloses a tool changing method based on a slurry balanced shield machine with a freezing function. The method comprises the following steps of 1, slurry cabin cleaning: a shield machine stops tunneling, and impurities, such as stone particles, inside a slurry cabin are cleanly cleared through a slurry circulation system; 2, slurry cabin and shield body peripheral soil body freezing: the shield machine slurry cabin and the shield body peripheral soil body are frozen by a freezing system arranged on the slurry balanced shield machine with the freezing function; 3, excavating and synchronous tool changing: the frozen slurry cabin is subjected to artificial excavating and cleaning, and the synchronous tool changing is performed in the cleaning process; and 4, unfreezing and recovery work. The tool changing method has the advantages that the design is reasonable; the operation is simple; the cost is low; a normal-pressure tool changing mode is used; the safety coefficient is high; and the practical problems of great tool changing difficultly and high risk when the slurry balanced shield machine is in a position with loose geological features and poor self stability of the tunnel face can be effectively solved.

Description

technical field [0001] The invention relates to a tool changing method of a mud-water balance shield machine with freezing function used in the field of tunnel engineering. Background technique [0002] With the urgent need of underground space engineering construction and the improvement of scientific and technological level, mud-water balance shield machine is generally used for tunnel engineering with complex geological conditions and passing through loose and water-bearing strata. During the shield machine construction process, the cutter head and the cutter will experience excessive wear and other failures under the action of external force. At this time, it is necessary to maintain the faulty part of the cutter head and replace the cutter. [0003] At present, there are mainly three methods for changing the cutters of the slurry balance shield machine in the warehouse at home and abroad as follows: [0004] (1) The method of changing the tool by pressing the gas belt ...

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a shield machine with convenient operation, low cost and high safety, which can effectively solve the problems of water gushing, sand gushing and tunnel face collapse when the mud-water balance shield machine is changing tools under harsh conditions. Tool changing method of slurry balance shield machine with freezing function

Images