Rock and earth mass in-situ direct shear test device with automatic data acquisition system and rock and earth mass in-situ direct shear test method

Abstract

The invention discloses a rock and earth mass in-situ direct shear test device with an automatic data acquisition system and a rock and earth mass in-situ direct shear test method and relates to a rock mechanical test technology. A rock and earth mass test sample can be subjected to shear failure on a proposed shear surface by applying a normal load and a horizontal shear force to the test sample, and the automatic data acquisition system is used for recording relevant data such as shear stress and displacement in a test process. The test device comprises the test sample (00), a shear box (10), a reaction system (20), a perpendicular pressure system (30), a force transmission system (40), a tangent pressure system (50), a roller row (60) and an automatic data acquisition system (70). By adopting strain control, the rock and earth mass in-situ direct shear test device is high in measurement precision and high in stability; the rock and earth mass in-situ direct shear test device is provided with the automatic data acquisition system; a spoke sensor is used through stress control, so that stress can be precisely measured; all components can be detached, so that the rock and earth mass in-situ direct shear test device is convenient to transport and mount.

Description

technical field [0001] The invention relates to rock and soil mechanics test technology, in particular to an in-situ direct shear test device and method for rock and soil with an automatic data acquisition system. [0002] Specifically, the present invention relates to an in-situ direct shear instrument for rock and soil, and also relates to a set of automatic data acquisition system for automatically collecting and recording sample displacement and stress data. The test device belongs to the strain control type, that is, the shear test process is completed by applying shear displacement to the sample. Its biggest advantage is that it adopts automatic data acquisition system and spoke pressure sensor, so that the measured rock and soil shear strength data is more accurate. At the same time, the device is simple in structure, easy to disassemble and easy to operate. Time to master. Background technique [0003] Most of the instability in geotechnical engineering is caused b...

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Problems solved by technology

[0005] The purpose of the present invention is mainly to solve the problem that the existing in-situ rock and soil direct shear equipment cannot automatically collect data and the accuracy of the test res

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