Method for determining similar conditions and similar material proportions of simulated carbonate geomechanical model

Abstract

The invention discloses a method for determining similar conditions and similar material proportions of a simulated carbonate geomechanical model. The method comprises the following steps: determiningsimilar conditions of the geomechanical model by considering geometric similarity and physical similarity, dividing prototype rock mass into three types, namely strongly weathered marl, moderately weathered marl and weakly weathered marl, according to the weathering degree of the prototype rock mass, and calculating various mechanical parameters of a target simulation material according to the mechanical parameters and the similar conditions of each type of prototype rock; and preparing a test piece model according to different proportions, performing uniaxial compression test and direct shear test on the test piece model, analyzing the weathering state of the marl corresponding to each proportion range according to test data, and determining a proportion scheme. According to the method disclosed by the invention, the prototype rocks in different weathering states can be simulated to the greatest degree through the proportion design, the simulation degree of various mechanical parameters is high, and a feasible scheme is provided for rock research in different physical states.

Description

technical field [0001] The invention belongs to the field of similar simulation materials in engineering construction, and relates to a geomechanical model technology for simulating carbonate rocks in different weathering states, in particular to a method for determining similar conditions and similar material ratios for simulating carbonatite geomechanical models. Background technique [0002] At present, sedimentary rocks are widely distributed in most areas of my country. Among them, the marl rocks located in shallow layers have different mechanical properties due to their different geological environments, especially in terms of weathering degree, thickness, and bearing capacity. There are large differences in such aspects, which have a very negative impact on engineering construction. The weathering degree of each layer of rock mass makes it difficult to qualitatively and quantitatively analyze the bearing capacity of the foundation. This problem has also become the main ...

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Problems solved by technology

Problems existing in existing materials: In the configuration of materials, some materials themselves have certain toxicity, which is harmful to the health of experimenters; in the production of model materials, the process is complicated and the requirements for materials are strict, which greatly increases the production cost; the ratio of materials Too many types greatly reduce the stability of simulated materials; there is still a lack of relevant research on the simulation of different physical states of the same rock

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