A tunneling method of shield equipment in high-viscosity mudstone

Abstract

The invention discloses a tunneling method of shield equipment in high-viscosity mudstone. The method comprises the following steps: 1. installing a water jet device and checking that the flushing pipeline is unimpeded; 2. checking whether the cutter head is bonded with mud cake; 3. 1. Pre-cleaning and setting the shield machine circulation parameters and tunneling parameters; 4. Shield tunneling and real-time detection of shield equipment operating parameters; 5. Judging whether the amount of slag is reduced; Whether the shield tunneling is over; 8. Delayed cleaning. The invention is equipped with a water knife device to effectively wash and cut the mud, avoiding manual cleaning when opening the warehouse. By setting up a stone crusher, the hard objects such as small mud or mixed stones in the mud are broken, To avoid blockage in the process of mud circulation, a reverse cleaning program is set, which can automatically clean the flushing pipeline more effectively.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling in high-viscosity mudstone, and in particular relates to a tunneling method of shield equipment in high-viscosity mudstone. Background technique [0002] At present, with the vigorous development of urban rail transit in my country, the formations encountered in subway shield construction are becoming more and more complex and diverse, which puts forward higher requirements for shield equipment and construction technology, especially for high-viscosity mudstone formations. The mud-water mixture shield machine is used. When the mud-water mixture shield machine is tunneling in the mudstone formation, there are problems such as the cutterhead is easy to stick to the mud cake, the muddy water chamber door is blocked, the pressure of the muddy water chamber is unstable, and the cutterhead is difficult to excavate. When encountering mudstone formations, it is necessary to frequently open the war...

AI Technical Summary

Problems solved by technology

[0002] At present, with the vigorous development of urban rail transit in my country, the formations encountered in subway shield construction are becoming more and more complex and diverse, which puts forward higher requirements for shield equipment and construction technology, especially for high-viscosity mudstone formations. The mud-water mixture shield machine is used. When the mud-water mixture shield machine is tunneling in the mudstone formation, there are problems such as the cutterhead is easy to stick to the mud cake, the muddy water chamber door is blocked, the pressure of the muddy water chamber is unstable, and the cutterhead is difficult to excavate.

When encountering mudstone formations, it is necessary to frequently open the warehouse under pressure and manually remove it. Manually entering the warehouse under pressure not only has a high safety risk, but also has a long construction period and high cost for removing mud cakes, resulting in high risks and low work efficiency. During the mud discharge process, Often due to hard objects and rocks mixed in the mud, the slurry discharge pipeline is blocked, and it needs to be shut down for dredging

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