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A platform for research: civil engineering, architecture and urbanism
Shield end soil body ultra-deep reinforcement construction method under water-rich silty-fine sand geology
The invention discloses a shield end soil body ultra-deep reinforcement construction method under water-rich silty-fine sand geology. The shield end soil body ultra-deep reinforcement construction method comprises the following steps of pile forming test, preparation before construction, in-place of a stirring machine, slurry preparation, drilling grouting, lifting stirring, repeated up-down stirring and acceptance check. According to the shield end soil body ultra-deep reinforcement construction method under the water-rich silty-fine sand geology, soil body reinforcement is conducted throughultra-deep three-axis stirring piles, the ultra-deep three-axis stirring piles are additionally arranged on the outer sides of reinforcing bodies to serve as waterproof curtains and are used for preventing underground water and sand outside a foundation pit from gushing into an end well in the station entering and exiting period of a shield tunneling machine, the phenomena of water gushing and sand gushing which are most likely to happen in the in-out hole process of the shield tunneling machine are greatly reduced, and therefore the risk of shield tunneling in-out hole in a full-section siltlayer is eliminated.
本发明揭示了一种富水粉细砂地质下盾构端头土体超深加固施工方法，包括如下步骤：成桩试验，施工前准备，搅拌机就位，制备泥浆，钻孔注浆，提升搅拌，重复上下搅拌，验收。本发明揭示的一种富水粉细砂地质下盾构端头土体超深加固施工方法，利用超深三轴搅拌桩进行土体加固，并且在加固体外侧增设超深三轴搅拌桩作为止水帷幕，用以隔断盾构机进出站期间基坑外地下水、砂突涌进入端头井内，大大降低了盾构机进出洞过程中最易出现的涌水、砂现象的出现，从而化解全断面粉砂层中盾构进出洞风险。
Shield end soil body ultra-deep reinforcement construction method under water-rich silty-fine sand geology
The invention discloses a shield end soil body ultra-deep reinforcement construction method under water-rich silty-fine sand geology. The shield end soil body ultra-deep reinforcement construction method comprises the following steps of pile forming test, preparation before construction, in-place of a stirring machine, slurry preparation, drilling grouting, lifting stirring, repeated up-down stirring and acceptance check. According to the shield end soil body ultra-deep reinforcement construction method under the water-rich silty-fine sand geology, soil body reinforcement is conducted throughultra-deep three-axis stirring piles, the ultra-deep three-axis stirring piles are additionally arranged on the outer sides of reinforcing bodies to serve as waterproof curtains and are used for preventing underground water and sand outside a foundation pit from gushing into an end well in the station entering and exiting period of a shield tunneling machine, the phenomena of water gushing and sand gushing which are most likely to happen in the in-out hole process of the shield tunneling machine are greatly reduced, and therefore the risk of shield tunneling in-out hole in a full-section siltlayer is eliminated.
本发明揭示了一种富水粉细砂地质下盾构端头土体超深加固施工方法，包括如下步骤：成桩试验，施工前准备，搅拌机就位，制备泥浆，钻孔注浆，提升搅拌，重复上下搅拌，验收。本发明揭示的一种富水粉细砂地质下盾构端头土体超深加固施工方法，利用超深三轴搅拌桩进行土体加固，并且在加固体外侧增设超深三轴搅拌桩作为止水帷幕，用以隔断盾构机进出站期间基坑外地下水、砂突涌进入端头井内，大大降低了盾构机进出洞过程中最易出现的涌水、砂现象的出现，从而化解全断面粉砂层中盾构进出洞风险。
Shield end soil body ultra-deep reinforcement construction method under water-rich silty-fine sand geology
一种富水粉细砂地质下盾构端头土体超深加固施工方法
ZHENG SHUCHAO (author) / WEI YUANBO (author) / FAN XUN (author) / FAN ZHIQIANG (author) / NI HUANGLEI (author) / GOU SHUNTAO (author) / SHEN QIANGRU (author) / CAO HUI (author) / QIAN WANGPING (author) / WANG YI (author)
2021-01-29
Patent
Electronic Resource
Chinese
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