Smart grouting system and grouting method for geologically complex regions

摘要

A smart grouting method for geologically complex regions, in which the coefficient of permeability of grouting holes in a region is obtained from water permeability tests, an optimal grout concentration for each grouting hole is determined, and sensors (8, 9, 11, 12) and control valves (C, D, E) are installed on every pipeline for real-time control in order to achieve a smart grouting effect. Concentrated grout and dilute grout are mixed at different flow rates to formulate the optimum grout concentration for each grouting hole. A corresponding final grouting pressure is proposed such that when the grouting pressure of a particular grouting hole in the middle of the region suddenly rises, the area designed for that grouting hole is deemed to be full of grout, and grouting of this hole is ended. Grouting of the region is complete when all grouting roles in a target region reach this final grouting pressure. The method enables smart grouting under complex geological conditions and features a high level of automation. It is possible to speed up grouting in workings without compromising work efficiency and quality. Further provided is a smart grouting system for geologically complex regions.