Device and method for testing dynamic tensile-shear mechanical properties of solid material in high-temperature environment

Abstract

The invention discloses a device and a method for testing dynamic tension-shear mechanical properties of a solid material in a high-temperature environment. The device comprises a dynamic-static combined shear loading system, a normal tension loading mechanism and a temperature control system. According to the device, the dynamic shear test research on the bone-shaped rock solid material under the action of normal tensile stress is realized by arranging the dynamic tensile shear mold, the eccentric tensile stress caused by shear displacement is reduced by arranging the centering module, and the temperature of the sample is adjusted by arranging the temperature control box body; dynamic and static combined shearing mechanical property test research of solid materials such as rocks under the action of static tensile stress under the high-temperature condition can be carried out, so that the dynamic tensile shear mechanical property test result of the solid materials such as rocks is closer to the real situation, and the device has important scientific value and practical significance for engineering practice.

Description

technical field [0001] The invention relates to an experimental device, in particular to the technical field of dynamic and static combined tensile and shear experiments of solid materials such as rock and concrete. Background technique [0002] With the advancement of industrialization and modernization, the demand for natural resources worldwide is increasing day by day, and the development and utilization of traditional natural resources as the main energy resources are gradually developing into the depths of the earth's crust. As one of the main characteristics of deep mining, high temperature (100-300℃) has a great impact on the strength and deformation properties of rock materials; at the same time, under the action of natural or man-made dynamic disturbances such as earthquakes, mining and blasting, the rock damage is more severe than normal temperature. , more abrupt and often larger in size under static conditions. Under the combined action of high temperature and ...

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Problems solved by technology

In recent years, although some scholars have provided a rock dynamic shear strength testing device under normal tensile stress (such as CN 213516698U), which can carry out dynamic shear tests under normal tensile stress, but this experimental method has passed high The strength of the structural adhesive connects the sample and the mold. The strength of the structural adhesive is affected by the temperature, so it is impossible to carry out dynamic tension-shear experiments at high temperatures, and it is impossible to carry out experimental research on the mechanical properties of rocks and other solid materials under dynamic and static combined tension-shear loading conditions.

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