Method for blocking seepage channel of negative pressure barrel foundation

• Main Authors: XIE JINBO, WANG JING, DING JIAN, LI SEN, ZHANG XI, LI YAZHOU, XIA JUNQIAO
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2021
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a method for blocking a seepage channel of a negative pressure barrel foundation. The method comprises the following steps: step 1, water is pump through a pump port to form an internal and external water pressure difference; step 2, when a negative pressure barrel is damaged by seepage and cannot continue to sink, water pumping is stopped firstly, and then water is injected through a grouting opening; step 3, when the water pressure inside and outside the negative pressure barrel is balanced, water injection through the grouting opening is stopped; step 4, grouting is conducted through the grouting opening, and when grout is discharged out of the negative pressure barrel, the reverse internal and external water pressure difference P1 at the moment is recorded; step 5, grouting is stopped for a period of time so that the grout in the seepage channel is solidified; step 6, water is injected through the pump port, the grouting opening is opened, residual grout is discharged out of the ne