Slurry sampling device used for detecting TRD equal-thickness cement stirring wall
A technology of cement-soil mixing wall and sampling device, which is applied in the direction of sampling device, foundation structure test, construction, etc., and can solve the problems that cannot meet the needs of deep slurry sampling
Pending Publication Date: 2015-05-06
EAST CHINA ARCHITECTURAL DESIGN & RES INST
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Problems solved by technology
However, there is no device that can extract the deep slurry of the cement-soil mixing wall in the current project, which cannot meet the needs of deep slurry sampling. Therefore, it is urgent to develop a reliable slurry sampling device to meet the requirements of deep slurry sampling and detection of the cement-soil mixing wall of equal thickness. need
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[0013] The invention provides a slurry sampling device for detecting cement-soil mixing walls with equal thickness of TRD. After sinking the slurry extraction cylinder to the predetermined depth in the slurry, the piston in the slurry extraction cylinder is pulled to form a vacuum in the cylinder under the piston, and the slurry passes through the slurry inlet at the bottom of the cylinder under the action of the vacuum negative pressure and the surrounding mud pressure When the slurry extraction cylinder is full, the spherical check valve automatically closes the slurry inlet under the action of gravity after the slurry is full, so as to achieve the purpose of extracting the slurry. In conjunction with the accompanying drawings, the specific description is as follows.
[0014] Such as figure 1 As shown, it includes a pulp extraction cylinder 1, a piston 2, a pull rod 3, a connecting rod 8, a one-way locking device 4, an outer sleeve 5, and a spherical one-way valve 6; the pu...
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The invention belongs to a slurry sampling device used for detecting a TRD equal-thickness cement stirring wall and belongs to the field of foundation pit engineering. The slurry sampling device comprises a slurry taking barrel, a piston, a pull rod, a unidirectional locking device, an outer sleeve and a spherical check valve; the barrel top of the slurry taking barrel is hollow and the barrel bottom of the slurry taking barrel is tapered and is provided with the spherical check valve; the barrel top at the upper part is fixedly connected with the outer sleeve by a connecting rod; the piston is located in the slurry taking barrel; and a piston outer ring is in dense contact with the slurry taking barrel by a rubber sealing ring so that the air tightness is good. The pull rod connected with the piston is arranged in the outer sleeve, and the piston is lifted by the pull rod. The unidirectional locking device is arranged on the outer sleeve, and the unidirectional locking is carried out in a pull rod lifting process. The slurry sampling device has the advantages that the design is simple and reliable, the engineering detection cost can be reduced, the construction is convenient and the practicability is strong.
Description
technical field [0001] The invention belongs to a slurry detection and sampling device in the field of foundation pit engineering, and can be widely used in projects using cement-soil mixing walls with equal thickness of TRD, and can also be used for sampling liquid substances such as underground diaphragm walls and cast-in-place pile retaining mud. Background technique [0002] TRD equal-thickness cement-soil mixing wall can be inserted with section steel to form an equal-thickness steel-cement-soil mixing wall foundation pit enclosure structure, and can also be used for water-proof curtains of foundation pit engineering and groove wall reinforcement of underground diaphragm walls. This construction method is suitable for a wide range of strata, good wall homogeneity, reliable water-proof performance, and a construction depth of up to 60m. It is an energy-saving and environmentally friendly green construction method with high promotion value. [0003] The current detection ...
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IPC IPC(8): G01N1/14E02D33/00
Inventor 王卫东邸国恩葛新鹏
Owner EAST CHINA ARCHITECTURAL DESIGN & RES INST