Diaphragm wall mud sampling device

Abstract

The invention discloses a diaphragm wall mud sampling device, including a sampling barrel and a counterweight device, the sampling barrel comprises a barrel body, a barrel cover and a barrel head, thetwo side of the barrel body are correspondingly provided with lifting mechanisms, the barrel cover comprises a fixed barrel cover and a movable cover which are of semicircles, the fixed barrel coveris fixed on the upper part of one side of the barrel body, the movable barrel cover is arranged on the upper part of the other side of the barrel body, and hinged to the fixed barrel cover, the upperpart of the movable barrel cover is provided with a barrel cover opening part, the counterweight device is arranged under the bottom head in a layout mode, connected with the movable barrel cover through a elastic connection part in a fastening mode, and through holes are correspondingly formed in the barrel head and the movable barrel cover. According to the diaphragm wall mud sampling device, the structure design is reasonable, the operation is portable, through the counterweight device arranged on the lower portion of the barrel head and connected with the movable barrel cover, the leakproofness of the sampling barrel can be improved to further improve the testing accuracy of mud samples, at the same time, through the lifting mechanisms correspondingly arranged on the two sides of the barrel body, sampling of the mud samples with the different depth can be met, and the range of application is extensive.

Description

technical field [0001] The invention belongs to the technical field of underground diaphragm wall construction, in particular to an underground diaphragm wall mud sampler. Background technique [0002] The underground diaphragm wall is a deep foundation pit support method. The specific method is to excavate along the support range of the foundation pit with a trough forming machine under the condition of mud retaining wall. After the excavation is completed, the steel cage is hung in the trench. Then, the underground diaphragm wall of the mud retaining wall is poured into concrete by the conduit method. [0003] Mud quality is an important measure to prevent hole collapse and necking, control sediment thickness, smooth reinforcement cage lowering, wall quality, etc. The construction specifications have corresponding regulations on the specific gravity, viscosity, sand content and PH value of mud. It is very important to control the performance index of mud at different dept...

AI Technical Summary

Problems solved by technology

The general sampling method is to use a sampler to detect the mud in the tank. It is difficult for the existing sampler to obtain complete mud samples at different depths. The parameters of the mud samples obtained are often quite different from the actual mud parameters, which cannot truly reflect the actual situation. situation, so it is necessary to provide a mud sampler that can meet the actual needs

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