Pit-digging volume detection device and method for detecting subgrade compaction degree by pit-digging method

Abstract

The invention relates to a pit-digging volume detection device and method for detecting the subgrade compaction degree of a pit-digging method. The pit-digging volume detection device comprises a piston cylinder, and a piston is assembled in the piston cylinder in a guide mode. A piston push rod is connected to one side of the piston, a solid flexible body for filling the corresponding to-be-drilled road surface or detection hole by being ejected and pushed by the piston is arranged at the other end of the piston. The solid flexible body is of a cylindrical structure with the outer diameter same as the inner diameter of the piston cylinder. The pit-digging volume detection device further comprises a stroke detection structure for measuring the movement stroke of the piston. The pit-diggingvolume detection device and method solve the technical problem of high work intensity caused by sand recovery due to the fact that sand filling is used for performing pit-digging volume detection inthe prior art.

Description

technical field [0001] The invention relates to a digging volume detecting device and a detecting method for detecting the compactness of a roadbed by a digging method in the field of detecting the compactness of the roadbed. Background technique [0002] The degree of subgrade compaction is one of the key indicators for the quality inspection of subgrade and pavement construction. It represents the density status after on-site compaction. The higher the degree of compaction, the greater the density, and the better the overall performance of the material. [0003] For subgrades, pavement semi-rigid bases and granular flexible bases, the degree of compaction refers to the ratio of the actual dry density on the construction site to the maximum dry density obtained from indoor standard experiments; for asphalt surface and asphalt stabilized bases, The degree of compaction refers to the ratio of the density achieved on site to the standard indoor density. Therefore, the determi...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a digging volume detection device for detecting the compactness of the roadbed by the digging method, so as to solve the problem of high work intensity caused by sand filling in the existing technology for digging volume detection and the need to recycle sand. Technical problem; The object of the present invention is also to provide a kind of digging volume detection method using this digging volume detection device

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