In-rushing Water Mechanism of Freezing Hole of Frozen Shaft and Counter-flow Water Diversion Grouting Sealing Technology

In order to solve the water disasters caused by freezing holes of full-depth bedrock frozen shaft in western China,analysis was made on the form of annular water-transmitting channels in freezing holes and the in-rushing water mechanism with the case of water disasters control project of Hujiahe coal mine.The paper presents an innovating counter-flow water diversion grouting sealing technology and introduced its principle and construction process.The project practice proved that this technology can effectively and quickly control the in-rushing water disaster of freezing hole.