A tool real-time monitoring system and normal pressure tool change method

Abstract

The invention discloses a tool real-time monitoring system and a normal-pressure tool changing method. The tool real-time monitoring system includes a DCRM hob rotation detection system arranged on each normal-pressure replaceable hob to know the running status of the tool in time; Before changing the tool by pressure, the corresponding soil is frozen and reinforced by injecting refrigerant from the ground drilling, so that the shield machine has a simple structure, low maintenance and construction costs, and short construction time. Double-axis double-edged normal-pressure cutters are adopted, and the replaceable cutters are divided into multiple types according to different lengths. Each type corresponds to different lengths of tool-changing gantry, which solves the inconvenient tool change of shield tunneling equipment in the prior art. 1. During the excavation process, the tool wears a lot, and the technical problems of eccentric wear of the tool and the cracking of the knife ring are prone to occur, so as to realize the safe and smooth progress of the shield tunneling.

Description

technical field [0001] The invention relates to the technical field of tunnel shield construction, in particular to a tool real-time monitoring system and an atmospheric pressure tool changing method. Background technique [0002] Shield equipment is the key to the success of a super-large-diameter shield tunnel project. Due to the cross-sectional size and structural top-covering soil requirements of super-large-diameter shield tunnels, it is inevitable to encounter multiple soil layers during the excavation process. Therefore, shield equipment requires high The reliability and technological advancement of the tunnel can meet the complex hydrology, geology, buildings along the tunnel and other environments that may appear in the tunnel location. For example, shield tunneling equipment may encounter granite with a strength close to 100MPa deep underground. Only relying on the direct cutting of shield tunneling equipment will result in low efficiency, poor construction reliabi...

AI Technical Summary

Problems solved by technology

The purpose of this hard rock rapid tunneling machine is to make the various components of the cutter head detachable, so that when a certain part of the cutter head is worn out, the part can be separated from the overall cutter head for maintenance. This design of detachable maintenance The method makes the overall cutter head not fast enough, shortens the life of the cutter head, and cannot be used for super large diameter shield tunnel construction

In addition, the hard rock fast tunneling machine is inconvenient to change the tool, and the anti-risk ability to prevent the cutter head from being trapped is poor

[0003] During shield excavation, the tool wears a lot, and it is prone to adverse phenomena such as eccentric wear of the tool and cracking of the knife ring. If the tool wears too much and is not replaced in time, it will seriously affect the rock-breaking effect of the shield.

[0004] When changing tools under normal pressure, it is often necessary to reinforce the soil layer around the cutter head and shield body to ensure the safety of tool changing construction. However, the structure of this shield machine is often very complicated, the cost is high, it is not easy to maintain, and the construction cost is high. Moreover, this freezing method often takes 10-20 days, and the construction time is long, causing delays in the construction period.

[0005] In addition, due to the large number of knives on the cutter head of the shield machine, the construction is inconvenient during the normal pressure tool change process, the time is long and difficult, and the risk factor of the tool change workers increases.