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孟振江 程国明 黄强兵摘要:以西安地铁6号线隧道工程穿越地裂缝为研究背景,通过现场调查与资料收集,具体分析地裂缝在与地铁线路交汇处的发育和灾害特征及其年活动速率;利用空间几何关系,提出相邻分段隧道之间在空间上会产生三向位移,从而引起其内部净空减小;运用数学公式定量计算得到地铁6号线穿越地裂缝的纵向影响长度参数。建议在设计地铁线路走向时,应尽量与地裂缝呈大角度相交。关键词:隧道工程;地裂缝;灾害特征;设防长度中图分类号:U452.27文献标志码:BAbstract: Based on the field investigation and data collection, the development and disaster characteristics of the ground fissure at the intersection with the metro line and its annual activity rate were analyzed in detail by studying the tunnel of Xian Metro Line 6 crossin……
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