The Construction Method of Leakage Prediction and Treatment of Underground Diaphragm Wall

Abstract

The invention relates to a construction method for seepage anticipation and treatment of an underground continuous wall. The construction method includes the following steps that according to the construction condition of the underground continuous wall, a seepage detection point is selected; during construction of underground continuous wall, a detection pipe is buried at the selected seepage detection point; after the construction of the underground continuous wall is finished, a detection probe of a sonar measuring instrument is sent into the detection pipe for detecting, and a detection result is obtained; and grouting water stop treatment is conducted on the leakage detection point which the seepage coefficient is larger than the set range in the detection result. According to the construction method, whether the underground continuous wall has seepage hidden danger or not is detected in advance to ensure safety of foundation pit excavation, if yes, grouting water stop treatment is conducted timely, the risk of water and sand gushing during foundation pit excavation is avoided, probability of seepage of the underground continuous wall is decreased, and construction safety of a foundation pit is improved.

Description

technical field [0001] The invention relates to the field of foundation pit construction engineering, in particular to a construction method for predicting and treating leakage of an underground continuous wall. Background technique [0002] The underground diaphragm wall has the characteristics of high structural rigidity, integrity, impermeability and durability, and can be used as a permanent earth and water retaining and load-bearing structure; it can adapt to various complex construction environments and hydrogeological adjustments, and can There is basically no noise and no vibration during the construction of existing buildings, and the impact on adjacent buildings and underground pipelines is small; underground walls of various depths, widths and shapes can be built. Because the underground diaphragm wall has a series of advantages, it is widely used in urban subway and deep foundation pit engineering. [0003] The waterproof performance of the underground diaphragm...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, to provide a construction method for the prediction and treatment of the leakage of the underground diaphragm wall, and to solve the problem of the underground diaphragm wall not being excavated before the excavation of the foundation pit in the existing underground diaphragm wall construction. The waterproof performance is tested, but there are still hidden dangers of water seepage and safety risks during the excavation of the foundation pit

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