Arrangement method of wear monitoring points and wear monitoring method for shield machine tools of large-diameter urban fast track tunnel shield machine

Abstract

The invention provides an abrasion monitoring point arrangement method for a large diameter inner-city rapid rail tunnel shield tunneling machine cutter. Refining subdivision is carried out accordingto abrasion monitoring point arrangement of the cutter of cutter heads, analysis is performed from aspects of cutter types, cutter heights, cutter center distance and the like, an abrasion monitoringpoint arrangement principle of the inner-city rapid rail tunnel shield tunneling machine cutter is creatively put forward, abrasion situations of cutters on cutter heads of an inner-city rapid rail tunnel shield tunneling machine with the diameter of 9m can be effectively monitored, the abrasion level of the cutters on the cutter heads of the shield tunneling machine is reflected truthfully at thegreatest extent so as to timely change the cutters when required, a theoretical basis is provided for monitoring shield cutter head and cutter abrasion situation in similar projects in the future, sothat abrasion monitoring is carried out on the cutter head and cutter pointedly depending on the principle, errors brought by cutter abrasion monitoring point arranged by an engineering analogy method are reduced, and valuable experiences are accumulated for subsequent cutter abrasion study.

Description

technical field [0001] The invention relates to tool wear monitoring on a shield machine cutter head, in particular to a method for arranging wear monitoring points and a wear monitoring method for a shield machine tool of a large-diameter urban fast-track tunnel. Background technique [0002] With the continuous progress of rail transit construction, shield construction has occupied a place in urban rail transit construction because of its fast and safe construction. At present, considering the low space utilization rate of the shield single-circle tunnel, the subsequent tunnel construction is developing in the direction of larger diameter shield tunnels, and the urban express rail is to use shield tunnels with a diameter of 9.0m for corresponding construction. With the increase of the shield diameter, long-distance excavation is a problem that cannot be ignored for the wear of the shield cutter head, especially in the sand and pebble strata in Beijing, where the cutter hea...

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Problems solved by technology

Both are tool wear monitoring methods for shield cutterheads, but there is currently a lack of design for the monitoring point layout of urban fast-track shield tools, especially the lack of relevant research on 9.0m-level urban fast-track shields. The above monitoring methods It is not suitable for the wear monitoring of shield cutters on fast track in the city area, which is unfavorable for the wear monitoring of shield cutterhead cutters in actual engineering, and deviation values ​​are prone to occur, and it is impossible to accumulate effective experience for subsequent construction

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