Shield machine cutter wear simulation testing device and method for upper-soft lower-hard stratum

Abstract

The invention provides a shield machine cutter wear simulation testing device and a shield machine cutting tool wear simulation testing method for an upper-soft lower-hard stratum. The shield machine cutter wear simulation testing device for the upper-soft lower-hard stratum comprises a simulate soil body used for simulating a site survey soil state of the upper-soft lower-hard stratum and a shield cutter head simulation device used for simulating rotation and tunneling of a cutter portion of a shield machine, wherein the simulate soil body is filled in a model test box, a simulate cutter head and a simulate cutter, obtained by simulating a real cutter head and a real cutter according to a scaled down rule, are arranged at an output end of the shield cutter head simulation device, and the simulate cutter head and the simulate cutter are stretched into the model test box, and laid towards the direction of the simulate soil body. By filling two types of soil bodies different in intensity in the test box according to work conditions in actual tunneling on site, the upper-soft lower-hard stratum is really simulated, and therefore effective test data is collected in aspects of thrust force, rotation speed, torque, tunneling length, cutter wear degrees and the like, and data support is provided to cutter improvement in actual construction.

Description

technical field [0001] The invention relates to the technical field of shield machine detection, in particular to a shield machine tool wear simulation test equipment for upper soft and lower hard formations. In addition, it also relates to a shield machine tool wear simulation test method for upper soft and lower hard formations. Background technique [0002] At this stage, the wear inspection of shield machine tools mainly adopts the method of shutting down and opening the warehouse. The main defects of this detection method are: the smoothness of construction and the construction period are delayed, the construction cost is increased, and the danger in the opening inspection process is relatively high, which is likely to cause safety hazards. [0003] The emergence of semi-soft and semi-hard strata complicates the construction conditions of shield machines, which leads to the bottleneck in the development of shield tunneling construction technology for subways at this st...

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Problems solved by technology

[0004] In view of the defects existing in the prior art, the object of the present invention is to provide a shield machine tool wear simulation test equipment and method for the upper soft and lower hard formations, so as to solve the problems of the existing shield machine in the state of semi-soft and semi-hard formations. The tool wear inspection method delays the smoothness of the construction and the construction period, increases the construction cost, and is more dangerous during the opening inspection process, which is prone to technical problems of potential safety hazards

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