A Non-equilibrium Grouting Method Based on Multi-dimensional Characteristics of Tunnel Rock Mass

Abstract

This invention provides a non-equilibrium grouting method based on the multi-dimensional characteristics of tunnel rock mass. By constructing a technical system that integrates multi-dimensional geological feature identification and model-based decision-making, it achieves precise and intelligent grouting control for complex fractured rock masses in tunnels. First, fractures are comprehensively classified based on their width, connectivity, and filling state, forming spatial distribution data. This transforms geological conditions into structured, spatially locatable digital information, providing precise target objects for grouting construction. Then, through a grouting parameter decision model, the current fracture type is automatically mapped to a strictly matching combination of grout mix ratio, grouting pressure, and grouting rate, achieving intelligent and standardized decision-making from geological features to construction parameters. This process solidifies mature experience and theoretical understanding into repeatable rules, ensuring a high degree of compatibility between the initial construction plan and the inherent hydraulic characteristics of the fractures, thereby significantly improving the targeting and controllability of grouting construction.

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