Similar material proportion determining method used in physical simulation experiment

Abstract

The invention discloses a similar material proportion determining method used in a physical simulation experiment. The similar material proportion determining method used in the physical simulation experiment includes the steps that (1) physically similar materials of a typical property rock stratum are selected, a series of physically similar materials are made according to the different proportions of aggregates, cementing materials and additives, and a database is built; (2) a physical simulation experiment model is selected, and the types of the physically similar materials and the similarity proportion are determined; (3) each simulation rack stratum mechanical parameter of the physical simulation experiment model is determined; (4) the types, proportion and detailed consumption amounts of the physical simulation experiment model are determined; (5) a physically similar material proportion scheme is generated, and experiment model pavement is carried out; (6) an indoor experiment is carried out according to the physical simulation experiment scheme, evaluation values are analyzed, the physical proportion scheme is corrected, and each mine stratum physically similar material proportion database is built. The similar material proportion determining method used in the physical simulation experiment is simple, standard, reasonable and feasible in step, and capable of effectively changing the situations that standardability is poor in the experiment, too much qualitative analysis is needed, and accuracy and repeatability are poor.

Description

technical field [0001] The invention relates to a method for determining the ratio of similar materials used in physical simulation experiments, which is particularly suitable for the method of physical similar simulation experiments in the field of coal mining, and belongs to the field of mine disaster prevention and control. Background technique [0002] The simulation experiment of physically similar materials is one of the important methods in the research and engineering application of coal mining and mine rock formation control technology in my country. Its essence is: using materials with similar mechanical properties to the prototype (rock mass, dam or other engineering structures) to shrink into an experimental model according to a certain ratio of geometric similarity, and manually excavating various underground engineering structures on the model, such as Mine roadways and chambers, longwall working face stopes, etc. The specific application in mine pressure and ...

AI Technical Summary

Problems solved by technology

[0004] In order to further improve the current situation of poor standardization, too much qualitative analysis, insufficient precision, and poor repeatability in the current physical simulation experiment method, the present invention provides a method for determining the ratio of similar materials used in physical simulation experiments, which can be useful Facilitates accurate prediction and repeatability of physically similar simulation experiments

Images