Mud viscosity regulating system and method for mud retaining wall

Abstract

The invention discloses a mud viscosity adjustment system and adjustment method for mud retaining walls; the system includes a mud pool and a grouting pipe for filling mud into holes or grooves, and a grouting pipe is provided between the mud pool and the grouting pipe There is a mud viscosity adjustment device, which includes a mixing chamber. The slurry inlet of the mixing chamber is connected with the mud pool through a slurry inlet pipe. The mixing chamber is connected with a water inlet pipe and a powder adding funnel for adding viscosity agent powder. The water inlet pipe There is a regulating valve on each of the mixing chamber and the powder adding funnel; the outlet of the mixing chamber is connected with the grouting pipe; a wave wheel driven by the first motor is arranged in the mixing chamber; the system also includes a water level measuring instrument arranged in the measuring hole; The key to this method is: according to the results of the water level measuring instrument, add viscosity agent powder or water in a targeted manner, and verify that the viscosity requirements are met before grouting the retaining wall. The adjusting system and adjusting method can adjust the viscosity of the mud sent into the hole or groove according to the height of the underground water table of the measuring hole.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a system and method for adjusting the viscosity of mud for mud wall protection during the construction of pore-forming cast-in-place piles or the construction of ground connecting wall channels. Background technique [0002] When constructing a cast-in-place pile, or when digging a channel with a wall at the construction site, it is often necessary to pour mud into the hole or groove to form the mud skin of the retaining wall to prevent collapse. The viscosity is an important parameter of the mud, and its specific value needs to be consistent with the actual working conditions of the construction site. If the viscosity is too low, the wall protection effect cannot be guaranteed. Collapsing the hole, but the viscosity is too high, it will cause the mud to be too thick. After forming a pile or connecting the wall to the ground, it will lead to insufficient la...

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Problems solved by technology

[0003] However, the above method of wall protection has defects in the river or coastal areas with abundant groundwater: the above method ignores an important variable, that is, the fluctuation of the groundwater level due to tides, and the groundwater level changes in the above-mentioned areas are objectively more frequent, while After the groundwater level rises, a mud wall with a high viscosity is required, and when the groundwater level falls, a mud wall with a low viscosity is required

In other words, the existing technology uses mud with a constant viscosity value, which is difficult to meet the needs of retaining walls in areas with frequent changes in groundwater levels

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