In view of the situation that the original fan needs to be installed after removing the original fan due to structural disease during the operation of a tunnel,the lining disease of the original fan position was investigated,the cause of the disease was analyzed,the location of the supplementary installation fan was selected based on the disease of the lining structure,and the demand for installing the fan in the new position was solved by pasting the steel plate reinforced lining combined with the bolt suspension embedded parts,and the feasibility of the scheme was verified by relevant verification.
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