Double-shield TBM shield body jamming prediction method and system

Abstract

The invention provides a double-shield TBM shield body jamming prediction method and system. The method comprises the following steps that tunneling parameters are obtained in real time through an on-site TBM upper computer; the single-tool thrust and propelling speeds of the tunneling parameters of the first n parameters at the current time are selected; through a sliding average window, the sliding averages of the n single-tool thrust and propelling speeds are obtained correspondingly; through a double-curve tangent function, real-time characteristic indexes are obtained, and each link of accumulated characteristic parameters are calculated through accumulating summation; accumulated characteristic indexes are compared with preset alarm warning values, and if the accumulated characteristic indexes are larger than the preset alarm warning values, information is sent to the TBM upper computer for alarm; and a pre-warning system comprises a data obtaining unit, a model calculating unit,a pre-warning display unit and a jamming alarm module. According to the double-shield TBM shield body jamming prediction method and system, jamming indexes are obtained through the tunneling parameters, real-time alarm of double-shield TBM jamming can be achieved, and the loss, caused by the jamming accident, of manpower, financial resources and materials is avoided.

Description

technical field [0001] The invention relates to the technical field of tunnel excavation equipment construction, in particular to a double-shield TBM shield jamming prediction method and system. Background technique [0002] The jamming problem of double-shield TBM in weak surrounding rock and fractured zone formation is a key factor restricting the construction efficiency of double-shield TBM. Once a jam occurs, it will cause huge loss of time and material costs. For example, in a water diversion project, the dual-shield TBM jammed once and caused equipment shutdown for nearly two weeks, resulting in huge losses. The current research mostly stays on how to get out of trouble after a machine jam occurs, but there is little research on how to carry out early warning of machine jams, and no relevant methods or theories have emerged yet. If an early warning can be issued to avoid the occurrence of stuck machines, it will be more practical for construction than spending a lot ...

AI Technical Summary

Problems solved by technology

Once the machine is stuck, it will cause huge loss of time and material costs

For example, in a water diversion project, the double-shield TBM jammed once and caused nearly two weeks of equipment shutdown, resulting in huge losses.

The current research mostly stays on how to get out of trouble after a machine jam occurs, but there are few studies on how to carry out early warning of machine jams, and no relevant methods or theories have emerged yet.

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