Mud viscosity adjusting system and adjusting method for mud protection wall

Abstract

The invention discloses a mud viscosity adjusting system and an adjusting method for a mud protection wall. The system comprises a mud pit and a grouting pipe used for filling mud into a hole or a groove, a mud viscosity adjusting device is arranged between the mud pit and the grouting pipe, the device comprises a mixing cavity, a mud inlet of the mixing cavity communicates with the mud pit through a slurry inlet pipe, a water inlet pipe and a powder adding funnel used for adding viscosity agent powder communicate with the mixing cavity, and an adjusting valve is respectively arranged on the water inlet pipe and the powder adding funnel; the outlet of the mixing cavity communicates with the grouting pipe; an impeller driven by a first motor is arranged in the mixing cavity; the system further comprises a water level measuring instrument arranged in a measuring hole; the key of this method is as follows: according to the result of water level measuring instrument, the viscosity agent powder or water is added specifically, and the viscosity requirement is verified and met before grouting and protecting the wall. The adjusting system and adjusting method can adjust the viscosity of the mud sent into the hole or the tank according to the groundwater level of the measuring hole.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a mud viscosity adjustment system and an adjustment method for mud retaining walls during the construction of hole-forming piles or the construction of ground connection wall channels. Background technique [0002] When constructing hole-forming cast-in-situ piles, or when excavating trenches for connecting walls at the construction site, it is often necessary to pour mud into the holes or grooves to form the mud skin of the retaining wall to prevent collapse. Viscosity is an important parameter of 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 effect of protecting the wall cannot be guaranteed, and the soil on the hole wall or groove wall is easy to drop sediment, which will reduce the quality of the project, and may even occur. If the hole is collapsed, if th...

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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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