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 steps as follows: 1, a water-jet cutter device is mounted, and whether a washing pipeline is smooth is checked; 2, whether mud cakes are attached to a cutter head is checked; 3, pre-cleaning is performed, and circulation parameters and tunneling parameters of a shield machine are set; 4, shield tunneling is performed, and operation parameters of the shield equipment are detected in real time; 5, whether the slag discharge amount is reduced is judged; 6, whether pressure of a mud water bin fluctuates abnormally is judged; 7, whether shield tunneling ends is judged; 8, delayed cleaning is performed. The water-jet cutter device is arranged for washing and cutting mud blocks effectively, and bin opening for manual cleaning is avoided; by means of a stone breaker, small mud blocks, mixed stone and other hard articles in mud are broken, blockage in the circulation process of slurry is avoided; the inverse cleaning procedure is set, so that the washing pipeline can be more effectively and automatically cleaned.

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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