Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for treating roof fall and collapse area of marine soft soil shallow-buried large-section tunnel
The invention belongs to the field of underground engineering, and provides a marine soft soil shallow-buried large-section tunnel roof collapse area treatment method which comprises the following steps: S1, mixing cement, modified nano carbon fibers, modified nano basalt fibers, fly ash, quartz sand, quick lime, an additive and water to prepare a nano composite material; s2, reinforcing a marine soft soil layer in a tunnel roof collapse area by adopting a surface grouting method outside the tunnel; s3, reinforcing the marine soft soil layer in the tunnel roof collapse area by adopting an advanced small guide pipe grouting method; s4, establishing real-time intelligent monitoring; and S5, a three-step method short footage construction method and a steel pipe concrete supporting structure and foot-lock anchor pipe cooperative supporting method are adopted for tunnel crossing reinforcing area construction. According to the scheme, the stability of the stratum in the shallowly-buried large-section tunnel roof collapse area can be enhanced, and the safety of layered and segmented excavation of the tunnel is guaranteed through cooperative supporting of the steel pipe concrete and the feet-lock bolts.
本发明属于地下工程领域，提供了一种海相软土浅埋大断面隧道冒顶坍塌区域治理方法，包括如下步骤：S1、将水泥、改性纳米碳纤维、改性纳米玄武岩纤维、粉煤灰、石英砂、生石灰、添加剂和水混合制成纳米复合材料；S2、洞外采用地表注浆方法加固隧道冒顶坍塌区域海相软土地层；S3、洞内采用超前小导管注浆方法加固隧道冒顶坍塌区域海相软土地层；S4、建立实时智能监测；S5、采用三台阶法短进尺施工、钢管混凝土支护结构与锁脚锚管协同支护的方法进行隧道穿越加固区域施工。该方案能够增强浅埋大断面隧道冒顶坍塌区域地层的稳定性，并利用钢管混凝土与锁脚锚杆协同支护，保障隧道分层分段开挖的安全。
Method for treating roof fall and collapse area of marine soft soil shallow-buried large-section tunnel
The invention belongs to the field of underground engineering, and provides a marine soft soil shallow-buried large-section tunnel roof collapse area treatment method which comprises the following steps: S1, mixing cement, modified nano carbon fibers, modified nano basalt fibers, fly ash, quartz sand, quick lime, an additive and water to prepare a nano composite material; s2, reinforcing a marine soft soil layer in a tunnel roof collapse area by adopting a surface grouting method outside the tunnel; s3, reinforcing the marine soft soil layer in the tunnel roof collapse area by adopting an advanced small guide pipe grouting method; s4, establishing real-time intelligent monitoring; and S5, a three-step method short footage construction method and a steel pipe concrete supporting structure and foot-lock anchor pipe cooperative supporting method are adopted for tunnel crossing reinforcing area construction. According to the scheme, the stability of the stratum in the shallowly-buried large-section tunnel roof collapse area can be enhanced, and the safety of layered and segmented excavation of the tunnel is guaranteed through cooperative supporting of the steel pipe concrete and the feet-lock bolts.
本发明属于地下工程领域，提供了一种海相软土浅埋大断面隧道冒顶坍塌区域治理方法，包括如下步骤：S1、将水泥、改性纳米碳纤维、改性纳米玄武岩纤维、粉煤灰、石英砂、生石灰、添加剂和水混合制成纳米复合材料；S2、洞外采用地表注浆方法加固隧道冒顶坍塌区域海相软土地层；S3、洞内采用超前小导管注浆方法加固隧道冒顶坍塌区域海相软土地层；S4、建立实时智能监测；S5、采用三台阶法短进尺施工、钢管混凝土支护结构与锁脚锚管协同支护的方法进行隧道穿越加固区域施工。该方案能够增强浅埋大断面隧道冒顶坍塌区域地层的稳定性，并利用钢管混凝土与锁脚锚杆协同支护，保障隧道分层分段开挖的安全。
Method for treating roof fall and collapse area of marine soft soil shallow-buried large-section tunnel
海相软土浅埋大断面隧道冒顶坍塌区域治理方法
WU KE (Autor:in) / XIE JIN (Autor:in) / LIU YAJUN (Autor:in) / LIU JIANMEI (Autor:in) / LIU ZHENHUA (Autor:in) / DOU ZHONGYU (Autor:in) / SUN YINDONG (Autor:in) / ZHANG HENG (Autor:in) / ZHENG YANG (Autor:in) / LI LIANXIANG (Autor:in)
06.09.2024
Patent
Elektronische Ressource
Chinesisch
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