Model test material used for simulating phosphorous deposit soft interbed and preparation method thereof

Abstract

The invention relates to model test material used for simulating phosphorous deposit soft interbed and a preparation method of the model test material. The model similar material comprises, by weight, the following components of 6 portions of natural dried fine river sand with a screen number of 120, 0.6-0.8 portion of building-used gypsum powder of a screen number of 800, 0.9-1.2 portions of ground calcium carbonate powder of a screen number of 600, 0.1-0.2 portion of pine sawdust powder, 0-0.1 portion of industrial alcohol, 0-0.1 portion of edible gelatine, 0.2-0.3 portion of clay, and 1.8-2.0 portions of water. The invention further discloses the preparation method of the material. Strength and elasticity modulus of the similar material are both low, ductility is strong, and Poisson is large. Moreover, the used materials are wide in source and free of poisonous impurities and pollution. The model test material used for simulating phosphorous deposit soft interbed is simple in preparation process, high in preparation efficiency, low in cost and capable of being taken as relatively ideal similar material of a model test of the simulating phosphorous deposit soft interbed.

Description

technical field [0001] The invention relates to a model test similar material for simulating the soft interlayer of a phosphate rock bed and a preparation method thereof, belonging to the technical field of material science. The similar material is mainly used in the model test research of similar material in the underground mining of phosphate deposits. Background technique [0002] At present, the research of mining engineering mainly relies on four methods: theoretical research, similar material model test, numerical analysis and field engineering measurement. Theoretical research is often constrained by various assumptions of ideal conditions, and the results obtained are quite different from the real situation; numerical analysis is based on ideal theoretical axioms, which are often restricted for mine engineering with complex geological conditions; Due to the existing mining and measuring instrument conditions, it is impossible to obtain enough data, and at the same t...

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Problems solved by technology

[0007] 2. MIB material developed by Han Boli, Wuhan University of Water Resources and Electric Power [Han Boli, Chen Xialing, Ning Yile, etc. Research on similar materials for rock mass [J]. Journal of Wuhan University of Water Resources and Electric Power, 1997, 30 (2): 6-9], China Materials developed by Chinese patents 200910061808.X, 201110225121.8 and 201110225644.7, and materials developed by Du Shigui of Zhejiang Industrial Vocational Technical College [Du Shigui, Huang Man, Luo Zhanyou, etc. Research on similar materials for mechanical prototype tests of rock structural surfaces[J]. Chinese Journal of Rock Mechanics and Engineering , 2010, 29 (10): 2263-2270], materials developed by Li Shuchen of Shandong University [Li Shuchen, Feng Xianda, Li Shucai, etc. Research on new solid-fluid coupling similar materials and their application [J]. Journal of Rock Mechanics and Engineering . Non-toxic and harmless, but the ductility of this type of material is not enough, and it cannot simulate the ductility characteristics of deep rock mass materials under the special environment of high temperature and high pressure, especially the Cambrian Meishucun Formation in the Southwest Dianchi Lake area, which was deposited in a special high temperature and high pressure environment Phosphate bed soft rock interlayer, and the outer film of the metal material ingredients in this type of material is easy to rust once it falls off, which affects the stability of the material

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