A mechanical analysis of the construction technology of sealing wall with the lading and stirring method

The principle of the new construction technology of sealing wall is introduced, which is applicable for the ground conditions which are mainly for the coarse sand and gravel layer with a large number of huge stones existing in the upper soil layer of construction areas, and which is easier than the traditional construction technology to effectively build underground sealing wall. The effective mechanism of TLS(Technology of Lading and Stirring method) to construct sealing wall is also analyzed. Aiming at the three different damage situation of the slip plane of the excavated wall, the essay checks the stability of the excavated wall during the excavation of the TLS for the mechanics analysis, and obtains the calculating formula of safety factor under three conditions is obtained. In the process of construction, if the groove wall is damaged, we can calculate the mud weight that keeps the safety and stability of the groove wall, and it also provides a guide for the safe and effective construction of TLS. Finally, combined with the project of the Macau international airport south apron expansion project instance, based on the measured results of vacuum degree analysis, the article shows that the sealing effect is good by using TLS, which has also solved the problem that other construction technology cannot be implemented in this project, which has obtained better technical indexes and economic benefit. The technology is worthy of popularizing. This article analyzes TLS from the point of view of mechanics, and will provide scientific guidance for TLS. It is of theoretical significance and practical significance.