Shear test device and test method for rock fracture surface at any angle

Abstract

The invention belongs to the technical field of geotechnical engineering, and concretely relates to a shearing test device used for a rock ruptured surface having an arbitrary angle, and a test method thereof. The shearing test device used for the rock ruptured surface having an arbitrary angle comprises a host, a shearing test machine, a crack area measuring instrument, a rock sample die box and a rock sample shearing box, and the rock sample die box matches with the rock sample shearing box. The invention also discloses a test method for the shearing test device used for the rock ruptured surface having an arbitrary angle. The method comprises the following steps: measuring the area of the rock ruptured surface, making a shearing sample, and measuring the shearing strength of a rock crack. The shearing test device used for the rock ruptured surface having an arbitrary angle, and the test method, which are provided by the invention, are well suitable for rocks having various rupture angles, are also suitable for rock samples having any shape and size, can overcome the disturbance of in-situ rock stress during previous sample making, and avoid the inaccuracy of a test result.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a shear test device and a test method for a rock fracture surface at any angle. Background technique [0002] With the steady improvement of my country's economic strength and the central government's "Belt and Road" line, people's requirements for the quantity and quality of oil, natural gas, mineral resources and high-speed rail are getting higher and higher, and the exploitation of these resources and high-speed rail projects Construction is inseparable from the study of the stability and deformation of underground rock mass. An important factor for rock stability is the shear strength of rock, especially the post-peak shear strength of rock, so it is necessary to study the shear strength of rock fracture surface. [0003] National key engineering projects such as road traffic, water conservancy and hydropower, energy, national defense engineering,...

AI Technical Summary

Problems solved by technology

However, when processing rock samples, it will consume a lot of manpower, material resources and financial resources, and more or less damage to the original cracks will be caused when making rock samples, and additional cracks will be generated for rock samples that are not broken. Stress, even the original unbroken sample is directly broken, which will greatly affect the experimental results, and even for the latter case, such experimental results are directly unusable

Images