原文传递
a pilot scale machine for tunnel boring research
| 题名： | a pilot scale machine for tunnel boring research |
| 责任者： | Hignett, HJ,Howard, TR |
| 关键词： | not available |
| 学科分类： | 隧道工程 |
| 摘要： | this report describes the development and design of a pilot- scale boring machine with a 1 m diameter head for rock cutting research. the machine has three main uses (1) the testing of a small number of full-size rock cutting tools, (ii) the study of 1/4 to 1/8 scaled model of large arrays of cutting tools and (iii) the development and proving of instrumentation. the cutting head is mounted on a hydraulic motor driven by a variable output pump powered by a 44kw electric motor. these units and the control gear are assembled on a chassis running on rails. instrumentation to record thrust, torque and rate of advance has been provided. (a) |
| 出版机构： | Transport Research Laboratory |
| 提交日期： | 1 January 1974 |
| 总页数： | 19 |
| 报告类型： | 科技报告 |
| 资源类型： | 科技（咨询、行业）报告 |
| 初始创建时间： | 1 January 1974 |
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