摘要
盾构在深埋破碎带地层中掘进相对普通地层更容易遇到地层收缩、塌方、卡刀盘、卡盾体、涌水等情况.通过以新疆某引水工程盾构穿越深埋破碎带地层段施工为背景,提出一套针对盾构机在大埋深、破碎带地层中掘进通过的保障措施,重点阐述了盾构机针对性结构设计、地层加固、止水环施工等技术要点,为后续盾构穿越深埋破碎带地层施工提供借鉴.
Abstract
Compared with ordinary strata,the shield machine is more likely to encounter conditions such as stra-tum contraction,collapse,sticking the cutterhead,sticking the shield body and water surge when tunneling through the strata of deeply-buried fracture zones.This paper takes the construction of the shield machine tunneling through the stratum section of deep fracture zones in a water diversion project in Xinjiang as the background,and puts forward a set of safeguard measures for the shield machine tunneling through the strata of fracture zones with large embedded depth,focusing on the key technologies of the targeted structural design of shield machines,stratum reinforcement and the construction of water-stopping rings,which provides references for the subsequent construc-tion of the shield machine tunneling through the strata of deeply-buried fracture zones.
维普
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