摘要
基于Rankine的主动和被动土压力理论,采用解析方法建立了合理确定EPB盾构机工作面压力方法,给出了EPB(Earth Pressure Blance)盾构机随埋深和土体力学参数的变化关系。根据力的平衡原理,推导了EPB盾构机推力与盾构机埋深、土体力学参数和盾构机几何尺寸的解析表达式。数值计算结果表明,所提出的推力计算方法与现场实际采用的数值基本一致。
Based on the Rankine＇s active and passive earth pressure theory, the mechanism of working face stability is analyzed, and the reasonable face earth pressure for EPB shield is deduced, and the optimal thrust fore for EPB shield is proposed. Comparison of practical thrust forces of EPB shields with computed ones through the practical engineering examples is investigation. Effectiveness of the proposed computing procedure is validated.
出处
《科学技术与工程》
2008年第23期6278-6282,共5页
Science Technology and Engineering
基金
国家重点基础研究发展规划(973)项目(2007CB714006)资助
关键词
EPB盾构机
主动和被动土压力
工作面压力
盾构机合理推力优化
EPB shield machine active and passive earth pressure earth pressure on working face optimal thrust force of shield machine
