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Liquid nitrogen frozen soil reinforcement construction method suitable for underground diaphragm wall groove wall
According to the liquid nitrogen frozen soil reinforcing construction method suitable for the groove wall of the underground diaphragm wall, through the liquid nitrogen refrigeration technology, liquid nitrogen serves as a cold source, low temperature is transmitted into a soil body through a freezing pipe, the temperature of the soil body of the groove wall of the underground diaphragm wall is reduced to be below the freezing point, and a firm and closed liquid nitrogen frozen soil body reinforcing area is formed; and meanwhile, due to the fact that the temperature of the liquid nitrogen is as low as-196 DEG C, the temperature can be lower, the soil body strength and stability are higher, a refrigerating system is relatively simple, the freezing speed is high, and the device is suitable for various types of soil layers and can better treat the difficult working conditions which cannot be treated by other reinforcement modes. The mechanical property of the soil body of the underground diaphragm wall groove wall can be improved, the strength, rigidity and stability of the soil body are improved, sedimentation, deformation and displacement of the soil body are reduced, and it is ensured that the groove wall cannot collapse when the underground diaphragm wall is subjected to grooving excavation.
本发明提供了一种适用于地下连续墙槽壁的液氮冻土加固施工方法，本发明通过液氮制冷技术，利用液氮作为冷源，通过冻结管将低温传递到土体中，使地下连续墙槽壁土体的温度降低至冰点以下，形成坚固密闭的液氮冻结土体加固区域，隔绝地下水的联系，同时由于液氮的温度低达‑196℃，可以达到的温度更低，具有更高的土体强度和稳定性，同时其制冷系统相对简单、冻结速度快、适用于各种类型的土层，可以较好的处理其他加固方式所不能处理的棘手工况。本发明可以改善地下连续墙槽壁土体的力学性质，提高土体的强度、刚度和稳定性，减少土体的沉降、变形和位移，确保地下连续墙成槽开挖时槽壁不会坍塌。
Liquid nitrogen frozen soil reinforcement construction method suitable for underground diaphragm wall groove wall
According to the liquid nitrogen frozen soil reinforcing construction method suitable for the groove wall of the underground diaphragm wall, through the liquid nitrogen refrigeration technology, liquid nitrogen serves as a cold source, low temperature is transmitted into a soil body through a freezing pipe, the temperature of the soil body of the groove wall of the underground diaphragm wall is reduced to be below the freezing point, and a firm and closed liquid nitrogen frozen soil body reinforcing area is formed; and meanwhile, due to the fact that the temperature of the liquid nitrogen is as low as-196 DEG C, the temperature can be lower, the soil body strength and stability are higher, a refrigerating system is relatively simple, the freezing speed is high, and the device is suitable for various types of soil layers and can better treat the difficult working conditions which cannot be treated by other reinforcement modes. The mechanical property of the soil body of the underground diaphragm wall groove wall can be improved, the strength, rigidity and stability of the soil body are improved, sedimentation, deformation and displacement of the soil body are reduced, and it is ensured that the groove wall cannot collapse when the underground diaphragm wall is subjected to grooving excavation.
本发明提供了一种适用于地下连续墙槽壁的液氮冻土加固施工方法，本发明通过液氮制冷技术，利用液氮作为冷源，通过冻结管将低温传递到土体中，使地下连续墙槽壁土体的温度降低至冰点以下，形成坚固密闭的液氮冻结土体加固区域，隔绝地下水的联系，同时由于液氮的温度低达‑196℃，可以达到的温度更低，具有更高的土体强度和稳定性，同时其制冷系统相对简单、冻结速度快、适用于各种类型的土层，可以较好的处理其他加固方式所不能处理的棘手工况。本发明可以改善地下连续墙槽壁土体的力学性质，提高土体的强度、刚度和稳定性，减少土体的沉降、变形和位移，确保地下连续墙成槽开挖时槽壁不会坍塌。
Liquid nitrogen frozen soil reinforcement construction method suitable for underground diaphragm wall groove wall
适用于地下连续墙槽壁的液氮冻土加固施工方法
ZHENG LIWEI (author) / ZHANG SHILUN (author) / ZHU TAO (author)
2023-12-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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