【摘要】 通过理论推导得出在三面围合状态下盾构隧道施工时,地下通道底板下注浆压力的分布规律,计算确定了合理的注浆压力,并探讨了注浆压力对地下通道结构的影响。结果表明底板注浆能抵消隧道推进引起的结构变形,甚至产生新的附加变形。当土体损失率越大时,底板注浆对地下通道结构的影响越大。更多还原

【Abstract】 Based on the theoretical derivation,the distribution law of the grouting pressure of the underground road during the construction of the shield tunnel in three-sided enveloped space was obtained. The reasonable grouting pressure was calculated and the influence of the grouting pressure on the structure of the underground tunnel was discussed. The results show that the grouting pressure can offset the structural deformation caused by the shield tunneling and even generate new additional deformation. When the soil loss rate is larger,the influence of the grouting on the structure of the underground road is greater.更多还原