Standardization and Metric Conversion for Tunneling,Underground Construction,and Mining.

摘要

Improvements in tunneling and underground construction and increased access to the underground have resulted in the availability to society of additional resources and in opportunities to use underground space to improve the surface environment. The U.S. National Committee on Tunneling Technology was established in 1972to stimulate advancement in tunneling technology and in effective use of the subsurface. Early in the Committee's deliberations,the lack of standardization was seen as a possible serious barrier to the modernization and application of new technology that is being developed from both government-and industry-sponsored research. It was felt that metric conversion and standardization actions should be planned concurrently,particularly in areas of relatively new development such as mechanized tunneling. At a symposium sponsored by the Committee,speakers from various government agencies and those experienced in manufacturing,construction,and mining explained potential benefits and problems associated with standardization and metric conversion.