Reinforcement Technology and Internal Force Monitoring for Horsehead Lining Structure of Freezing Shaft in West Soft Rock Containing Water

Through the internal force monitoring for horsehead lining structure of freezing shaft in west soft rock containing water, the change laws of steel stress, concrete strain and pore water pressure of lining structure are grasped. The supporting effect is evaluated by field monitoring method. The anchoring + grouting + spraying reinforcement technology is proposed according to support concept of “strengthening supporting, appropriately yield, rigid-flexible combination”. The support effect shows that the reinforcement technology is reasonable.