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Immersed tube foundation trench treatment process and immersed tube installation process of offshore inland river intersection area
The invention discloses an immersed tube foundation trench treatment process and an immersed tube installation process of an offshore inland river intersection area. The immersed tube foundation trench treatment process comprises the following steps that S1, dredging construction is carried out, a foundation trench is excavated, a bad section is marked, dredged soil is thrown and unloaded through a mud barge, foundation trench excavation is divided into a rough excavation stage and a fine excavation stage, foundation trench surface soil excavation is carried out firstly, and then deep water excavation grooving, desilting and leveling operation are carried out; S2, a foundation trench is detected; and S3, broken stone replacement and filling are carried out on the bad section, the foundation trench area is subjected to broken stone replacement and filling for the bad section, a broken stone leveling ship is used for construction, a barge is used for transporting broken stone to a leveling ship, and the broken stone is laid and leveled through the leveling ship. The conditions that the soil layer is poor in homogeneity and large in discreteness are improved through replacement filling, then the structural stability of the foundation trench is improved, and the stability of follow-up use of the immersed tunnel is better.
本申请公开了一种近海内河交汇区的沉管基槽处理工艺及沉管安装工艺，包括以下步骤：S1，疏浚施工，清挖基槽，并标出不良段，疏浚土通过泥驳抛卸；基槽开挖分粗挖和精挖两个阶段，先进行基槽表层土开挖，再进行深水开挖成槽及清淤、整平作业；S2，基槽检测；S3，不良段碎石换填，针对不良段对基槽区域进行碎石换填，用碎石整平船施工，使用驳船将碎石运输到整平船，通过整平船将碎石铺放整平。通过换填改善了土层均质性差、离散性大的情况，进而提升了基槽的结构稳定性，使得沉管隧道后续使用的稳定性更好。
Immersed tube foundation trench treatment process and immersed tube installation process of offshore inland river intersection area
The invention discloses an immersed tube foundation trench treatment process and an immersed tube installation process of an offshore inland river intersection area. The immersed tube foundation trench treatment process comprises the following steps that S1, dredging construction is carried out, a foundation trench is excavated, a bad section is marked, dredged soil is thrown and unloaded through a mud barge, foundation trench excavation is divided into a rough excavation stage and a fine excavation stage, foundation trench surface soil excavation is carried out firstly, and then deep water excavation grooving, desilting and leveling operation are carried out; S2, a foundation trench is detected; and S3, broken stone replacement and filling are carried out on the bad section, the foundation trench area is subjected to broken stone replacement and filling for the bad section, a broken stone leveling ship is used for construction, a barge is used for transporting broken stone to a leveling ship, and the broken stone is laid and leveled through the leveling ship. The conditions that the soil layer is poor in homogeneity and large in discreteness are improved through replacement filling, then the structural stability of the foundation trench is improved, and the stability of follow-up use of the immersed tunnel is better.
本申请公开了一种近海内河交汇区的沉管基槽处理工艺及沉管安装工艺，包括以下步骤：S1，疏浚施工，清挖基槽，并标出不良段，疏浚土通过泥驳抛卸；基槽开挖分粗挖和精挖两个阶段，先进行基槽表层土开挖，再进行深水开挖成槽及清淤、整平作业；S2，基槽检测；S3，不良段碎石换填，针对不良段对基槽区域进行碎石换填，用碎石整平船施工，使用驳船将碎石运输到整平船，通过整平船将碎石铺放整平。通过换填改善了土层均质性差、离散性大的情况，进而提升了基槽的结构稳定性，使得沉管隧道后续使用的稳定性更好。
Immersed tube foundation trench treatment process and immersed tube installation process of offshore inland river intersection area
近海内河交汇区的沉管基槽处理工艺及沉管安装工艺
DONG ZILONG (author) / KANG XUPENG (author) / YANG XUDONG (author) / LIU YANPING (author) / ZHAO SHAOHUI (author) / ZHOU LINGNING (author) / ZHOU YI (author) / FU HELIN (author) / XIANG XU (author)
2021-11-02
Patent
Electronic Resource
Chinese
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