This standard specifies the product types and basic parameters of cantilever tunnel boring machines (hereinafter referred to as tunnel boring machines). This standard applies to tunnel boring machines operating in gas, coal dust or other explosive mixed gases. It is also suitable for the same type of boring machines used in other projects.
MT/T 138-1995 history
2008MT/T 238.2-2008 Boom-type roadheader.Part 2: Types and parameters
1995MT/T 138-1995 Type and parameters of cantilever roadheader
MT/T 138-1995 Type and parameters of cantilever roadheader was changed to MT/T 238.2-2008 Boom-type roadheader.Part 2: Types and parameters.