Anti-seepage construction method and anti-seepage structure for construction joint of foundation pit support structure in water-rich area

• Main Authors: LI PENG, DONG KUN, HUANG YONGLIANG, MEN YANQING, WANG JUNJIE, WANG CHENGQIAN, LUO WEI, LIU YONG, SUN LIANYONG, ZHANG DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 25.11.2022
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention belongs to the technical field of foundation pit anti-seepage construction, and discloses an anti-seepage construction method and an anti-seepage structure for a construction joint of a foundation pit support structure in a water-rich area. The anti-seepage construction method comprises the steps that temporary water stopping is conducted on construction joints of the building envelope, film bag grouting holes and drainage holes are formed, the segmented retreating type film bag grouting device is inserted into the film bag grouting holes, retreating type segmented grouting is conducted on the film bag grouting holes, grouting is conducted on the drainage holes, and repairing grouting is conducted on the film bag grouting holes and the drainage holes. And grouting is conducted on the building envelope construction joint, and a pre-tensioning steel plate is installed. According to an anti-seepage structure formed through the anti-seepage construction method, film bags are located in grouting hole