Test device capable of cementing rock joint surfaces through using fluid in phased manner and use method

Abstract

The invention discloses a test device capable of cementing rock joint surfaces through using a fluid in a phased manner and a use method. The test device comprises a slurry injection component, a plurality of carrying table assemblies for carrying a test piece for simulating the cementing of the rock joint surfaces and a supporting body used for supporting and fixing the slurry injection componentand the carrying table assemblies; the slurry injection component includes a first injection box and a second injection box which are communicated with each other; the second injection box is cuboid;a plurality of open holes which are arranged in an array and are matched with the to-be-cemented surfaces of the test piece are formed in two symmetrical surfaces of the second injection box along the length direction of the second injection box; the supporting body includes a base and two supporting frames, wherein the two supporting frames are fixed to the base, so that an integrated body can be formed; and the two supporting frames are provided with carrying table supporting layers in a vertical direction. With the test device and the use method of the invention adopted, a slurry can be naturally solidified, a process in which the rock joint surfaces are cemented and strengthened can be simulated more intuitively and realistically, and an experimental process is not abstract; a rock joint rock cemented test sample which is more in conformity with natural joint surfaces with cemented and filled cracks can be obtained, and reliable and effective data can be provided for research on the shear deformation and failure mechanism of rock joint surfaces.

Description

technical field [0001] The invention belongs to the research field of rock joint surfaces in geotechnical engineering, in particular to a test device and a method for using fluids to cement rock joint surfaces in stages. Background technique [0002] During the long geological history evolution, the rock (body) has undergone the long-term action of multi-phase tectonic stress fields of different sizes and directions, which leads to the randomness of the distribution of rock structure planes, the diversity of shapes, and the inconsistency of spatial combinations. Due to the complexity, the study of rock mass structure becomes very complicated, and it is difficult to fully describe the characteristics of the structural plane by only using a limited number of statistics (mean, variance, etc.). Moreover, due to the limitation of natural outcrops or excavation surfaces, it is difficult for people to systematically and deterministically measure the geometric parameters of the stru...

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Problems solved by technology

[0004] Aiming at the problem that the process of using numerical simulation to study the shear deformation and failure mechanism of rock joint surfaces in the current prior art is too abstract and cannot be directly explored, the purpose of the present invention is to provide a method that can use fluid to cement rock joint surfaces in stages The test device can visually observe the cementation process of rock joint surfaces, and obtain simulated rock joint surface cementation samples

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