tunnelmastaan
Tunnelmastaan is a term that has appeared in limited online discussions about subterranean design and tunnel construction. There is no widely accepted definition, and the term is not listed in major engineering dictionaries or standards. Because sources vary, the meaning remains unsettled and may refer to different ideas in different contexts.
In some usages, tunnelmastaan is described as a method or concept for stabilizing excavations in urban or
Due to the lack of formal definition, technical details, performance data, and standards are not established.