Construction method for preventing slurry from overflowing in underground diaphragm wall pouring construction

Abstract

A slurry overflow prevention construction method used in underground diaphragm wall pouring construction comprises the following steps that (1) before an underground diaphragm wall first-stage groove is excavated, the underground diaphragm wall first-stage groove and an adjacent non-excavated area are excavated to form a slurry buffer area; 2) laying a slurry discharge pipeline in the slurry buffer area, wherein the slurry discharge pipeline is connected to a slurry pump; (3) a first-stage groove of the diaphragm wall is excavated; (4) first sealing operation of a first-stage groove of the diaphragm wall is carried out; (4.1) a pouring frame is erected above the first-stage groove of the underground diaphragm wall, and concrete pouring is conducted; 4.2) continuously extracting the slurry overflowing into the slurry buffer area by a slurry pump; (5) after the first sealing operation is completed, concrete is continuously poured; by the adoption of the method, the problem that wall protecting slurry overflows and enters a guide wall in the underground diaphragm wall construction process is solved, the problems that site pollution is caused by the slurry and cost is increased due to the fact that the total using amount of the slurry is increased are solved, and the purposes of zero pollution and low cost of underground diaphragm wall construction are achieved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a mud overflow prevention construction method used in the pouring construction of ground connecting walls. Background technique [0002] The underground diaphragm wall is a kind of grooving machine used on the ground in the foundation project. Along the peripheral axis of the deep excavation project, under the condition of mud wall protection, a narrow and long deep groove is excavated. After the groove is cleared, it is suspended in the groove. Place the steel cage, and then use the conduit method to pour the underwater concrete into a unit groove section. This is done section by section, and a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing and water-retaining structure. [0003] In the construction process of pouring the concrete into the groove of the ground connecting wall, in order to avoid the inclusi...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a mud spill prevention construction method used in the ground wall pouring construction, to solve the problem that the retaining wall mud overflows and enters the guide wall during the construction of the ground wall, and to avoid on-site pollution caused by mud and The problem of cost increase caused by increasing the total amount of mud is used to achieve the goal of zero pollution and low cost in the construction of ground-to-wall construction

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