Foundation pit supporting system and construction method thereof: Fid-Bau Portal

Foundation pit supporting system and construction method thereof

HU ZHAOHUI / SUN JUN / ZHU FENGQIONG

The invention relates to a foundation pit supporting system and belongs to the technical field of foundation pit supporting. The foundation pit supporting system comprises supporting plates, the supporting plates are attached to the side walls of a foundation pit, and a water guide beam embedded into a foundation pit soil body is further included. A water guide groove is formed in the water guidebeam in the length direction of the water guide beam, and a plurality of holes are formed in the side walls of the water guide beam; a vertical shaft is formed in the foundation pit soil body in the vertical direction, and the vertical shaft communicates with the water guide groove through a connecting pipe; and a switching assembly for sealing or opening the connecting pipe is arranged in the connecting pipe. Accumulated water in the soil body enters the water guide groove through the through holes, and is gathered in the vertical shaft along the water guide groove, the accumulated water is drained through the vertical shaft, the pressure of the soil body on the supporting plates is reduced, it is effectively avoided that the supporting body greatly deforms to be damaged, and the stability of foundation pit supporting is improved; and after too much accumulated water is drained, the switching assembly is switched off, and it is avoided that due to the fact that too much underground water in the soil body runs off, the soil body sinks.

本发明涉及一种基坑围护系统，属于基坑围护技术领域，包括支撑板，所述支撑板与基坑的侧壁贴合，还包括嵌设于基坑土体内的导水梁，所述导水梁内沿导水梁的长度方向开设有导水槽，所述导水梁的侧壁开设有若干的开孔，基坑土体内沿竖直方向开设有竖井，所述竖井与导水槽之间通过连接管连通，所述连接管内设置有用于密封或打开连接管的开关组件。土体内的积水通过通孔进入导水槽内，沿导水槽汇聚到竖井内，通过竖井排出积水，减小土体对支撑板的压力，有效地防止支撑板变形过大而损坏，提高基坑围护的稳定性；待过多的积水排出后，关闭开关组件，防止土体内的地下水流失过多而导致土体下陷。

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