Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thixotropic slurry suitable for soft soil layer pipe jacking construction, grouting mechanism and grouting process
The invention provides thixotropic slurry suitable for soft soil layer pipe-jacking construction, a grouting mechanism and a grouting technology, the thixotropic slurry comprises sodium bentonite, water, K2CO3, silica fume and a foaming agent with the mass mixing ratio of 1: (10-20): (0.04-0.06): (0.2-0.5): (0.1-0.2), grouting buried pipes are pre-buried on the upper side, the lower side, the left side and the right side of a rectangular jacking pipe, three-way pipes are communicated with the positions, corresponding to the grouting buried pipes, of a grouting main pipe, and the three-way pipes are communicated with the grouting main pipe. The inner side end of the grouting buried pipe is connected with the free end of the three-way pipe through a grouting branch pipe, the grouting branch pipe comprises an outer pipe and an inner pipe, an opening-degree-adjustable electromagnetic valve is arranged on the middle section of the outer pipe, a one-way valve is arranged on the middle section of the inner pipe, the inner pipe and the outer pipe are connected together in a threaded and sleeved mode, and the other end of the inner pipe is in threaded connection with the inner side end of the grouting buried pipe. The other end of the outer pipe is in threaded connection with the free end of the three-way pipe, the grouting main pipe is a PVC hose, and the four corners of the grouting main pipe are arched through corner springs. The problem that the long-distance tunneling formation resistance is too large is solved by improving the material ratio and the grouting mode.
本发明提出了一种适用于软土层顶管施工的触变泥浆、注浆机构及注浆工艺，触变泥浆包括质量配合比为1：10～20：0.04～0.06：0.2～0.5：0.1～0.2的钠基膨润土、水、K2CO3、硅灰和泡沫剂，矩形顶管的上下左右侧均预埋有注浆埋管，注浆主管上对应各注浆埋管处均接通有三通管，注浆埋管的内侧端与三通管的自由端之间通过注浆支管连接，注浆支管包括外管和内管，外管中间段上设有可调开度的电磁阀，内管中间段上设有单向阀，内管和外管螺纹套接在一起，内管的另一端与注浆埋管的内侧端螺纹连接，外管的另一端与三通管的自由端螺纹连接，注浆主管为PVC软管，注浆主管的四角通过转角弹簧拱形。本发明通过改进材料配比以及注浆方式解决了长距离掘进地层阻力过大问题。
Thixotropic slurry suitable for soft soil layer pipe jacking construction, grouting mechanism and grouting process
The invention provides thixotropic slurry suitable for soft soil layer pipe-jacking construction, a grouting mechanism and a grouting technology, the thixotropic slurry comprises sodium bentonite, water, K2CO3, silica fume and a foaming agent with the mass mixing ratio of 1: (10-20): (0.04-0.06): (0.2-0.5): (0.1-0.2), grouting buried pipes are pre-buried on the upper side, the lower side, the left side and the right side of a rectangular jacking pipe, three-way pipes are communicated with the positions, corresponding to the grouting buried pipes, of a grouting main pipe, and the three-way pipes are communicated with the grouting main pipe. The inner side end of the grouting buried pipe is connected with the free end of the three-way pipe through a grouting branch pipe, the grouting branch pipe comprises an outer pipe and an inner pipe, an opening-degree-adjustable electromagnetic valve is arranged on the middle section of the outer pipe, a one-way valve is arranged on the middle section of the inner pipe, the inner pipe and the outer pipe are connected together in a threaded and sleeved mode, and the other end of the inner pipe is in threaded connection with the inner side end of the grouting buried pipe. The other end of the outer pipe is in threaded connection with the free end of the three-way pipe, the grouting main pipe is a PVC hose, and the four corners of the grouting main pipe are arched through corner springs. The problem that the long-distance tunneling formation resistance is too large is solved by improving the material ratio and the grouting mode.
本发明提出了一种适用于软土层顶管施工的触变泥浆、注浆机构及注浆工艺，触变泥浆包括质量配合比为1：10～20：0.04～0.06：0.2～0.5：0.1～0.2的钠基膨润土、水、K2CO3、硅灰和泡沫剂，矩形顶管的上下左右侧均预埋有注浆埋管，注浆主管上对应各注浆埋管处均接通有三通管，注浆埋管的内侧端与三通管的自由端之间通过注浆支管连接，注浆支管包括外管和内管，外管中间段上设有可调开度的电磁阀，内管中间段上设有单向阀，内管和外管螺纹套接在一起，内管的另一端与注浆埋管的内侧端螺纹连接，外管的另一端与三通管的自由端螺纹连接，注浆主管为PVC软管，注浆主管的四角通过转角弹簧拱形。本发明通过改进材料配比以及注浆方式解决了长距离掘进地层阻力过大问题。
Thixotropic slurry suitable for soft soil layer pipe jacking construction, grouting mechanism and grouting process
适用于软土层顶管施工的触变泥浆、注浆机构及注浆工艺
FENG WEI (Autor:in) / YU HAIWEI (Autor:in) / SHI CHUAN (Autor:in) / ZHANG TIANFU (Autor:in) / LI HUAN (Autor:in) / YU QIUJU (Autor:in) / LI JIANXUN (Autor:in)
13.08.2024
Patent
Elektronische Ressource
Chinesisch
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