Contracting-expanding type earth-rock hybrid normal position mechanical property measuring device

Abstract

The invention discloses a contracting-expanding type earth-rock hybrid normal position mechanical property measuring device, which comprises a feeler lever, a tubular sealing cavity, a base, an expanding lever, an expanding board, a rigid hollow lever, a clamper and the like. The feeler lever has preset length, the tubular sealing cavity can expand along the axial direction, the base is sleeved at the other end of the sealing cavity, one end of the expanding lever is installed on the base in rotating mode, the expanding board is installed on the expanding lever, the rigid hollow lever is sleeved in the feeler lever and the sealing cavity, a nozzle is arranged on a section of the hollow lever arranged in the sealing cavity, and the clamper is arranged at the other end of the hollow lever extending out of the base. The contracting-expanding type earth-rock hybrid normal position mechanical property measuring device can finish expanding in holes and earth-rock breaking, forms a complete breaking surface, adopts high-pressure air or high-pressure water injecting, leads the sealing cavity to expand for supplying lateral pressure, damages normal position earth-rock hybrid through shearing in the process for raising the probe device, monitors and records data, and then changes testing depth so as to achieve testing of different-depth earth-rock normal position mechanical property parameters.

Description

technical field [0001] The invention relates to the technical field of in-situ testing of geotechnical engineering, in particular to an in-situ mechanical performance measuring device for a shrinkage-type soil-rock mixture. Background technique [0002] At present, in-situ test methods are used in the process of measuring the in-situ mechanical properties of soil and rock bodies, mainly including: static penetration test method, pre-drilling side pressure test method, field cross plate test method and field direct shear test method Wait. [0003] The static penetrating method cannot directly observe the stratum, and belongs to the indirect simulation test, which is highly dependent on regional experience and is suitable for soil types. However, the soil-rock mixture has discontinuous and non-uniform properties, and it has great significance for the detection of the mechanical parameters of the soil-rock mixture. unreasonable. [0004] The pre-drilling side pressure test me...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing geotechnical engineering in-situ testing devices and methods cannot accurately and truly reflect the in-situ mechanical properties of soil and rock bodies, and provide a device with simple structure and testing process, easy operation, and more realistic results Measuring device for in-situ mechanical properties of shrinkage-type soil-rock mixture

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