Simulation experiment method for evaluating the effect of different factors on grouting reinforcement of broken rock mass

Abstract

The invention discloses a simulation experiment method for evaluating a grouting reinforcement effect of different factors on a fractured rock mass. The fractured wall rock of an underground engineering is simulated by combining crushed rock particles in different particle size, different orthogonal experiments of different levels are designed for various factors influencing the grouting reinforcement effect, different factors are comprehensively researched, and the factor which severely influences the reinforcement effect of the crushed wall rock as well as a parameter range and a relation of the remarkable influence factor and an evaluation index can be obtained. The method is scientific and rigorous, various factors influencing the grouting reinforcement effect of the fractured wall rock can be comprehensively researched, and instructive significance for scheme design and implementation for grouting reinforcing on-situ fractured wall rock of the underground engineering can be realized.

Description

technical field [0001] The invention belongs to the technical field of safety in underground engineering, and particularly relates to the research on the grouting reinforcement effect of various factors in the grouting scheme of the underground engineering on the grouting reinforcement effect of broken surrounding rocks and the design of the grouting scheme. Background technique [0002] The fracture of the surrounding rocks around the chamber caused by the excavation of the underground engineering, and the natural surrounding rock fracture zone that the underground engineering passes through, will pose a great threat to the safety of the underground engineering. Not only the broken surrounding rock may fall off and hurt the staff, but also the strength of the surrounding rock itself is an important part of maintaining the stability of the underground project. The insufficient strength caused by the crushing of the surrounding rock will lead to excessive deformation of the un...

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Problems solved by technology

[0004] At present, there is no comprehensive experimental method to study the various influencing factors of grouting reinforcement, and it is impossible to fully understand and evaluate the various influencing factors of grouting reinforcement.

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