TY - Jour A2 - 龚，宾·奥 - 刘，刘·奥 - 张，青东奥 - 张，连镇奥 - 鹏，方奥 - 李，朱诚奥 - 翁，仙街PY - 2020DA - 2020/12/21隧道工程泥泞故障中分段灌浆扩散过程模型试验SP - 6698011 VL - 2020 AB - 为了实现隧道工程泥泞故障中分段灌浆的扩散规律，完成了三维灌浆扩散仿真试验。在灌浆管中的三个相邻部分已经完成了三次灌浆操作。灌浆压力，注射速率，土压场和渗流压力场一直在三个灌浆阶段进行实时监测。分析了分段灌浆操作对土压场和有效应力场的影响。结果表明，以前的灌浆操作会影响后来的灌浆操作。由于先前的灌浆操作，可以压实灌浆层，并且灌浆扩散将在后面的灌浆阶段征服更大的阻力。相应地，在后续灌浆阶段，灌浆压力增加和注射速率降低。用于单个灌浆操作存在有限的影响范围。对于每个灌浆阶段，土壤压力和有效应力在注射孔位于注射孔所在的部分通过灌浆操作有效地影响。 By contrast, soil pressure and effective stress in section away from injection hole are affected relatively weakly by grouting operation. With distance to injection hole increasing, compaction degree and reinforcement effect of grouted muddy fault decay in space. Multisegmental grouting method has significant advantages over single grouting method. Ineffectively compacted area by previous grouting operation can be effectively compacted by later grouting operation from adjacent injection hole. As a result, uniformity of grouting reinforcement effect can be improved, and weakly reinforcement area can be reduced. SN - 1468-8115 UR - https://doi.org/10.1155/2020/6698011 DO - 10.1155/2020/6698011 JF - Geofluids PB - Hindawi KW - ER -