1results about How to "Affect authenticity" patented technology

This utility model discloses a sampling device for deep diaphragm wall retaining mud, comprising: a sampling bucket, a support pipe, and a lifting assembly; the sampling bucket has a square-shaped lifting cavity; the support pipe is located at the top of the sampling bucket, and its top end passes through the diaphragm wall to the ground surface, so that the lifting cavity is connected to the ground surface; the lifting assembly includes a lifting pipe, which is hollow and has a sampling hole at its bottom end connected to the lifting cavity, and the lifting pipe moves radially back and forth along the support pipe. Deep mud enters the lifting pipe through the sampling hole, and then is transported to the ground surface through the lifting pipe to complete the sampling of deep diaphragm wall retaining mud. Because the sampling bucket has a lifting cavity inside, the deep mud of the diaphragm wall retaining mud is placed in the lifting cavity, which can isolate the surface and middle mud layers, avoiding interference from mud from other strata that may affect the sampling structure and the authenticity of the sample.